2.1
The proposed Hong Kong - Zhuhai - Macao Bridge Hong Kong Link Road
(HKLR) is 12km long connecting the Hong Kong-Zhuhai-Macao Bridge (HZMB) at the
HKSAR Boundary with the Hong Kong Boundary Crossing Facilities (HKBCF) situated
at the north eastern waters of the Hong Kong International Airport, opening a
new and direct connection route between Hong Kong, Macao and the Western Pearl
River Delta.
2.2
The HKLR comprises a 9.4km long viaduct section from the HKSAR boundary
to Scenic Hill on the Airport Island; a 1km tunnel section to the reclamation
formed along the east coast of the Airport Island and a 1.6km long at-grade
road section on the reclamation connecting to the HKBCF. The tunnel section of
HKLR will pass under Scenic Hill, Airport Road and Airport Railway to minimize
the environmental and visual impacts to Tung Chung residents.
2.3
An application (No ESB-110/2003) for an Environmental Impact Assessment
(EIA) Study Brief under Section 5(1) of the Environmental Impact Assessment
Ordinance (EIAO) was submitted by Highways Department (the Project Proponent)
on 8 October 2003 with a Project Profile (No. No. PP-201/2003) for the Hong
Kong - Zhuhai - Macao Bridge Hong Kong Section and North Lantau Highway
Connection. The Hong Kong - Zhuhai - Macao Bridge Hong Kong Section and North
Lantau Highway Connection has subsequently been renamed as HKLR. EPD issued an EIA Study Brief (No:
ESB-110/2003) in November 2003 to the Project Proponent to carry out an EIA
study.
2.4
An EIA Study (Reg. No. AEIAR-144/2009) has been undertaken to provide
information on nature and extent of environmental impacts arising from the
construction and operation of HKLR. The Environmental Permit was issued on 4
November 2009 (Permit No. EP-352/2009). Pursuant to Section 13 of the EIAO, the
Director of Environmental Protection amends the Environmental Permit (No.
EP-352/2009) based on the Application No. VEP-339/2011 and the environmental
Permit (Permit No. EP-352/2009/A) was issued on 9 November 2011 for HKLR to the
Highways Department as the Permit Holder. Subsequently, the Director of
Environmental Protection amends the Environmental Permits (No. EP-352/2009/A,
EP-352/2009/B, EP-352/2009/C) based on the Application No. VEP-409/2013, VEP-411/2013
and VEP-459/2014 respectively. The environmental Permit (Permit No.
EP-352/2009/D) was then issued on 22 December 2014.
2.5
Figure 1a-d shows the layout of the Contract
and the scope of the Contract works comprises the following major items:
¡P
a dual 3-lane carriageway in the form of
viaduct from the HKSAR boundary (connecting with the HZMB Main Bridge) to the
Scenic Hill (connecting with the tunnel under separate Contract No.
HY/2011/03), of approximately 9.4km in length with a hard shoulder for each
bound of carriageway and a utilities trough on the outer edge of each bound of
viaducts;
¡P
a grade-separated turnaround facility located near San Shek Wan, composed of sliproads
in the form of viaduct with single-lane carriageway bifurcated from the HKLR
mainline with an elevated junction above the mainline;
¡P
provision of ancillary facilities including, but not limited to,
meteorological enhancement measures including the provisioning of anemometers
and modification of the wind profiler station at hillside of Sha Lo Wan,
provisioning of a compensatory marine radar, and provisioning of security
systems; and
¡P
associated civil, structural, geotechnical, marine, environmental
protection, landscaping, drainage and highways electrical and mechanical
(E&M) works, street lightings, traffic aids and sign gantries, marine
navigational aids, ship impact protection system, water mains and fire
hydrants, lightning protection system, structural health monitoring and
maintenance management system (SHM&MMS), supervisory control and data
acquisition (SCADA) system, as well as operation and maintenance provisions of
viaducts, provisioning of facilities for installation of traffic control and
surveillance system (TCSS), provisioning of facilities for installation of
telecommunication cables/equipments and reprovisioning works of affected existing
facilities/utilities.
2.6
Different parties with different levels of involvement in the Contract
organization include:
Supervising Officer¡¦s Representative (SOR) ¡V
Ove Arup & Partners Hong Kong Limited (ARUP)
Contractor ¡VDragages
-China Harbour-VSL JV (DCVJV)
Environmental Team (ET) ¡V Cinotech Consultants
Ltd. (Cinotech)
2.7
The proposed project organization and lines of communication with
respect to the on-site environmental management structure are shown in Figure 2. The key personnel contact
names and numbers are summarized in Table
2.1.
Table 2.1 Key
Contacts of the Contract
Party |
Position |
Name |
Phone
No. |
Fax
No. |
SOR (ARUP) |
CRE |
Mr. Michael Chan |
3767 5803 |
3767 5922 |
Mr. Colin Meadows |
3767 5801 |
|||
ENPO/IEC (Ramboll Environ) |
Environmental Project Office Leader |
Mr. Y. H Hui |
3465 2888 |
3465 2899 |
Independent Environmental Checker |
Mr. Antony Wong |
3465 2888 |
3465 2899 |
|
Contractor
(DCVJV) |
Deputy Project Director |
Mr. W.K Poon |
3121 6638 |
3121 6688 |
Environmental Officer |
Mr. CHU Chung Sing |
3121 6672 |
||
24-hour Hotline |
-- |
6898 6161 |
-- |
|
ET (Cinotech) |
Environmental Team Leader |
Dr. Priscilla Choy |
2151 2089 |
3107 1388 |
2.8
Ramboll Environ Hong Kong Limited (Ramboll
Environ) is employed
by the Highways Department as the Independent Environmental Checker (IEC) and
Environmental Project Office (ENPO) for the Project.
2.9
A copy of Contractor¡¦s
construction programme is provided in Appendix A.
Summary of Construction Works Undertaken During Reporting Period
2.10
The major site
activities undertaken in the reporting period included:
June 2015:
Land Viaduct
(P85 to Abutment at SHT) & Marine Viaduct (P81 - P84)
(a) P81L&R - pile cap were
completed; 2 pours of column were completed in this reporting period.
(b) P82L - ELS excavation was
suspended due to settlement.
(c) P82R - excavation works are in
progress.
(d) P83L - ELS excavation is in
progress.
(e) P83R - 4 pours of column were
completed in this reporting period.
(f) P84L&R - column head were
completed.
(g) Portal Works:
Pier Location |
Progress |
P84 |
Steel bracket and girders
erection completed; Pier head construction is in
progress |
P86 |
Installation of steel bracket
and girder system is in progress |
P87 |
Removal of formwork &
falsework is in progress |
P88 |
Removal of falsework &
steel bracket system was completed. |
P89 |
Erection of soffit formwork
was completed, formwork & falsework erection is in progress |
P90 |
Steel fixing is in progress,
target for concreting on 30 June 2015 |
P91 |
Portal was cast on 9 June
2015. Nailing work and removal of formwork is in progress |
P92 |
Erection of formwork and
kickers were completed; Steel fixing to start |
P93 |
Removal of steel cross beams
were completed |
Marine Viaduct (P0 to P80)
Piling Testing, Coring and Grouting (locations other than P68 &
P75):
(a) Inter-face
coring tests were carried out at D18.
(b) Full
depth coring test was carried at D20-L3.
(c) Sonic
test was carried out at D18.
(d) Grouting
work was carried out at D17.
Progress at
P68
(a) Casing installation at R3 to R5 and L2 & L5.
(b) P68- L3, L4 and L6
were cast.
(c) P68-L1
excavation was completed with installed rebar cage for concreting at the end of
June 2015.
(d) Two
RCD were set up onto R5 and L5 casings at end of June 2015 for commencing of
socket drilling.
Progress at
P69
(a)
Setting up for cofferdam construction work was
completed at early June and working platform construction was commenced.
(b)
Right hand side (RHS) working platform was
completed and installation of sheetpiles on RHS
cofferdam in progress.
(c)
Left hand side (LHS) working platform construction
was completed at the end of June.
Progress at
P75
(a)
RHS concrete plug was concreted.
(b)
RCD guide frame was installed on the RHS box.
(c)
RCD guide frame was installed on the RHS box.
(d)
RCD excavation is in progress at R2 and R4.
(e)
Excavation to formation at the LHS continued.
Disposal from Marine Works
(a)
The disposals in this reporting
period are shown in below table.
Disposal Location |
No of Trip |
Type of Materials |
TM38 |
0 |
Inert
Materials |
TMCLK |
0 |
Inert
Materials |
HK
Open Sea Mud Pits |
0 |
Types
II Marine Mud |
Cross
Boundary Disposal |
0 |
Type I
Marine Mud |
Pilecap Construction:
(a) Precast shells installed in this reporting
period - two CP3 at P55; Four CP6 at P79 and P80; Four CP1 at P6 and P8; One
CP12 at P26L.
(b) Stage 1 concreting was completed
at P11, P26R & P55.
(c) Stage 1 works is in progress at P79.
(d) Stage 2
concreting was completed at P2L, P7, P11, P13, P26R
& P58L.
(e) Stage 2 works is in progress at P55.
(f) Kingpost
installation and associated steel welding works for precast shell installation
are in progress at P9.
(g) Advanced concrete trimming (inside casing) works were carried out at
P5, P6, P8, P9, P56 & P57 and concrete trimming (inside cap shell) at P55.
(h) Submerged pile cap works with cofferdam:
Pier Location |
Side |
Progress |
P73 |
L |
Backfilling and removal of
cofferdam completed on 19-Jun-15 |
R |
Backfilling and removal of
cofferdam completed on 19-Jun-15 |
|
P74 |
L |
Grouting works around bored
pile is in progress |
R |
Drilling of grouting holes is
in progress |
|
P75 |
L |
Rock excavation is in progress |
R |
Rock excavation is in progress |
In-situ Column Construction
(a) 1st lift works is in progress at P1, P3, P4, P7, P15, P23, P58 & P78.
(b) 1st lift concrete was poured at P1, P3, P4, P23, P54,
P53-Ramp, P59-Ramp, and P78.
(c) 2nd lift works is in progress at P54, P53-Ramp, P59-Ramp and
P78.
(d) 2nd lift concrete was poured at P70.
(e) Pier head works is in progress at P70.
(f) Pier head concreting: NIL.
Precast Column Erection
Description |
Location
completed in this reporting period |
Number
of Units erected/ Number of Columns completed in this reporting period |
Cumulative
No. of Piers completed (up
to 28th of each month) |
Precast
Column Segment |
P25 |
2 |
20 (P21,
P25, P27-P44) |
Precast
Column Pier Head |
P28,
P29 |
4 |
17 (P28-P44) |
Vertical
Tendons Stressed |
P28,
P29, P34 |
6 |
12.5 (P28,
P29, P34, P35(1/2), P36-P44) |
Grouting
Vertical Tendons |
P36,
P37, P38, P39 |
8 |
9 (P36-P44) |
Pier
Head Concrete |
P40,
P41, P42 |
6 |
5 (P40-P44) |
In-situ Double Blade Column Construction
Pier Location |
Side |
Progress |
P17 |
L |
1st lift in
progress |
R |
1st lift in
progress |
|
P18 |
L |
Poured concrete up to 5th
lift and 6th lift in progress |
R |
Poured concrete up to 5th
lift and 6th lift in progress |
|
P72 |
L |
Poured concrete to 2nd
lift and pierhead in progress |
R |
Poured concrete to 2nd
lift and pierhead in progress |
|
P77 |
L |
Works commenced |
R |
Works commenced |
|
P77 |
L |
1st lift in progress |
R |
Poured concrete to 1st
lift and 2nd lift in progress |
Marine Portal
(a) Dismantling of scaffolding at Portal P52 completed. Removal of temporary
supporting platform is in progress.
(b) Temporary bearing wall of Portal P60 casted. Dismantling of soffit
platform is in progress.
Deck Erection
(a)
Setting up of Equipment:
Type of Equipment |
Status |
Lifting
Frames 1 (LF1) |
Assembly of first set of LF1
almost completed. Assembly of the second to
fourth set of LF1 is on-going at WA4; Steelwork for the 3rd
and 4th set of Lifting Frames is under fabrication with some
deliveries commenced. |
Lifting
Frames 3 (LF3) |
Fabrication of LF3 in China is
almost completed for 8 sets. Most of the major components have been completed
and have been delivered to site.
Assembly of the first 2 sets of LF3 is completed. The 3rd and
4th sets are almost completed at WA4. Assembly of the 5th
to 7th sets have been commenced at WA4 and they are targeted to be
completed by mid-July. |
Launching
Gantry 1 (LG1) |
Segment erection to P112L
& P111L completed in his reporting period, LG1 launching to P108. |
Launching
Gantry 2 (LG2) |
Erection of P46 to P48
completed (120 segments in total), launching back and forward to P45. |
(b)
Segment erection:
Type |
Location of Segments erected in this reporting period |
Number of Segments erected in this reporting period |
Cumulative No. of Segments erected (up to 28th of each month) |
LG1 |
P108R
& P111L & P112L |
22 |
242 |
LG2 |
P48 |
40 |
120 |
SOP |
- |
- |
36 |
Precast Segment
(a)
Segment Casting:
-
Storage for long span & type D segments is
still a key concern.
-
Production affected by inclement weather (5 days).
-
2 nos. of type D & 4 nos. of type CH mould were
suspended due to storage problem.
Item |
Number in this reporting period |
Cumulative No. of Precast Segment Completed (up to 28th of each month) |
Segment
Cast |
172 |
2261 |
(b)
Off-site Storage:
Area |
No. in Off-site Storage |
A1 |
134 |
A2 |
207 |
A3 |
236 |
A4 |
- |
Remarks: A fourth off-site
storage facilities was identified for long span segments and preparation works
was completed. Segments are to be delivered.
Precast Concrete Shell Casting
(a) Summary
of precast shell cast in the precast yard:
Type of Shell |
Number of Precast Shell Cast in this reporting
period |
Cumulative No. of Precast Shell Completed (up to 28th of each month) |
CP1 |
4 |
94 |
CP2 |
Completed |
12 |
CP3 |
0 |
12 |
CP4 |
Completed |
8 |
CP5 |
Completed |
6 |
CP6 |
Completed |
4 |
CP11 |
Completed |
1 |
CP12 |
Completed |
1 |
F1 |
1 |
1 |
Precast Column & Precast Pier Head Casting
(a)
Progress of the precast column & precast pier
head casting:
- All casting works for the
based column were completed and the moulds were dismantled. 4 moulds (2 piers
and 2 pier heads) are now in service for precasting
works.
- Totally 25
precast elements (19 piers with 6m high, 3 monolithic pier heads and 3 pier heads
with bearing support) were cast in this reporting period.
- All
the 3m high piers
were completed in this period (in total 39 elements).
- Cumulatively
254 precast elements were cast.
Delivery for Precast Concrete Elements (by barge)
(a)
Precast Deck Segments:
-
Number of additional barges
engaged in this period: 0
-
Cumulative number of barges: 13
(3 barges tied up on L/S storage)
-
Number of deck segment
deliveries in this period: 10 trips
-
Cumulative number of deck
segment deliveries: 95 trips
Segment Types |
Segment Delivered in this reporting period |
Cumulative No. of Precast Segment Delivered (up to 28th of each month) |
A |
42 |
172 |
B |
0 |
0 |
C |
0 |
0 |
D |
0 |
0 |
E |
10 |
262 |
(b)
Precast column units:
-
Number of additional barges
engaged in this period: 0
-
Cumulative number of barges: 2
-
Number of column unit deliveries in this period: 3
trips
-
Cumulative number of column unit deliveries: 30
trips
Unit Types |
Number of units delivered in this reporting period |
Cumulative No. of Precast Column Delivered (up to 28th of month) |
3m |
1 |
19 |
6m |
17 |
73 |
PH1 |
0 |
20 |
PH2 |
4 |
14 |
(c)
Temporary storage of long span segments:
-
Barge #968 was not able to delivery long span
segments at mid-June caused impacts on the scheduling of deliveries.
(d)
General:
-
Delays in the segment unloading has impacts on the
delivery cycle time to the extent that there are number of barges overstayed
for 14 days in Hong Kong.
-
First delivery of long span segment for P20¡¦s SOP
(type CH) arrived in Hong Kong before end of June.
July 2015:
Land Viaduct
(P85 to Abutment at SHT) & Marine Viaduct (P81 - P84)
(a) P81L&R - 3 pours of column
were completed in this reporting period.
(b) P82L - ELS excavation works are
in progress.
(c) P82R - excavation works and
waling installation completed, pile cap work is in progress.
(d) P83L - ELS excavation is in
progress.
(e) P83R - 4 pours of column were
completed in this reporting period.
(f) Portal Works:
Pier Location |
Progress |
P84 |
Falsework erection is in
progress |
P86 |
Erection of falsework and
soffit formwork is in progress |
P87 |
Removal of steel bracket
system was completed |
P89 |
Steel fixing is in progress |
P90 |
Removal of formwork is in
progress |
P91 |
Removal of falsework is in
progress |
P92 |
Portal was concreted on 17
July 2015 |
P93 |
Erection of steel bracket
system is in progress |
Marine Viaduct (P0 to P80)
Piling Testing, Coring and Grouting
(locations other than P68 & P75):
(a) Grouting
work was carried out at P18 and P20.
Progress at
P68
(a) P68 - L1, L2, L4, R4 and R5 were
cast, total 8 nos. complete.
(b) One RCD was set up on R6 casing at end
of July 2015 for socket drilling.
Progress at
P69
(a) Sheetpiling work at ¡§R¡¨ and ¡§L¡¨ side are in
progress.
Progress at
P75
(a) P75 R- side - 4 piles were cast.
(b) Excavation to formation at the
L-side continues.
Pile Cap
Construction
(a) Precast shells installation - two
CP3 at P57.
(b) Stage 1 concreting was completed
at P2R, P57, P79 & P80.
(c) Stage 1 works is in progress at
P26L.
(d) Stage 2 concreting was completed
at P55.
(e) Stage 2 works is in progress at
P57 & P79.
(f) Kingpost installation and
associated steel welding works for precast shell installation are in progress
at P5R.
(g) Advanced concrete trimming
(inside casing) works were carried out at P5R, P9, D18-L, D18-R & P56 and
concrete trimming (inside cap shell) at P2R, P6, P26L & P57.
(h) Submerged pile cap works with cofferdam:
Pier Location |
Side |
Progress |
P72 |
L |
Backfilling and removal
of cofferdam start on 21-Jul-15 |
R |
Backfilling and removal
of cofferdam start on 21-Jul-15 |
|
P74 |
L |
Grouting works around bored
pile is in progress Trimming of concrete for
extension of pile head is in progress |
R |
Drilling of grouting holes is
in progress Excavation around the
footprint of pile cap is in progress |
|
P75 |
L |
Rock excavation is in progress |
R |
Rock excavation is in progress |
In-situ Column (Single) Construction
(a) 1st lift works is in progress at P1, P7, P11
& P13.
(b) 1st lift concrete was poured at P7, P15 & P58.
(c) 2nd lift works is in progress at P58, P53-Ramp, P59-Ramp & P78.
(d) 2nd lift concrete was poured at P53-Ramp, P54 & P59-Ramp.
(e) Pier head works is in progress at P54 & P70.
(f) Pier head concreting: NIL
Precast Column Erection
Description |
Location completed in
this reporting period |
Number of Units erected/
Number of Columns completed in this reporting period |
Cumulative No. of Piers
completed (up to 28th of each
month) |
Commencement (ie. starting from 1st precast unit) |
P16,
P24 |
22
(P16, P21, P24, P25, P27-P44) |
Commencement (i.e.
starting from 1st precast unit) |
Completion (i.e. completed
installation of pier head unit) |
Nil |
17
(P28-P44) |
Completion (i.e. completed
installation of pier head unit) |
Vertical
Tendons Stressed |
P30(50%), P32(50%), P33, P35 (50%) |
15
(P28, P29, P30(1/2), P32(1/2), P33-P44) |
Vertical
Tendons Stressed |
Grouting
Vertical Tendons |
P28,
P34 |
11 (P28, P34, P36-P44) |
Grouting
Vertical Tendons |
Pier
Head Concrete |
P39 |
6
(P39-P44) |
Pier
Head Concrete |
In-situ Double Blade Column Construction
Pier Location |
Side |
Progress |
P17 |
L |
Poured concrete up to 2nd
lift and started to construct 3rd lift |
R |
Poured concrete up to 1st
lift and 2nd lift in progress |
|
P18 |
L |
All cast in July 2015 during
this reporting period, total 7 lifts |
R |
Poured concrete up to 6th
lift and 7th lift in progress |
|
P72 |
L |
All cast in July 2015, total 3
lifts (including pierhead) |
P76 |
L |
Poured concrete up to 1st
lift and 2nd lift in progress |
R |
Poured concrete up to 1st
lift and 2nd lift in progress |
|
P77 |
L |
Poured concrete up to 1st
lift and 2nd lift in progress |
R |
Poured concrete up to 2nd
lift and started to construct 3rd lift |
Marine Portal
(a) Removal of temporary supporting platform at Portal P52 & P60 was
completed.
Deck Erection
(a)
Setting up of Equipment:
Type of Equipment |
Status |
Lifting
Frames 1 (LF1) |
Assembly of first set of LF1
at WA4 almost completed. Assembly of the second to
fourth set of LF1 is on-going at WA4; Steelwork for the 3rd
and 4th set of Lifting Frames is under fabrication with some
deliveries commenced. |
Lifting
Frames 3 (LF3) |
Fabrication of LF3 in China is
completed for the 8 sets. Most of the major components have been delivered to
site. Assembly of the first 4
sets of LF3 is completed and they have started operation at P64. Assembly of the 5th set is completed.
The 6th, 7th and 8th sets have been
commenced at WA4 and they are targeted to be completed by mid-August. |
Launching
Gantry 1 (LG1) |
Segment erection from P114 to
P107 completed; Erection of P106 is in
progress. |
Launching
Gantry 2 (LG2) |
Erection of P45 to P48
completed (160 segments in total). |
(b)
Segment erection:
Type |
Location of Segments erected in this reporting
period |
Number of Segments erected in this reporting period |
Cumulative No. of Segments erected (up to 28th of each month) |
LG1* |
P108, P107 & P106 |
60 |
302 |
LG2 |
P45 |
40 |
160 |
LF3 |
P64 |
6 |
6 |
SOP |
P42, P43 & P62 |
12 |
54 |
Long Span SOP |
P20 |
6 |
6 |
* includes crane erection for P109
Precast Segment
(a)
Segment Casting:
-
Storage for all types of segments is still a key
concern.
-
Production affected by inclement weather (8 days).
-
2 nos. of type D & 4 nos. of type CH mould were
suspended due to storage issue.
-
4 nos. type E, 10 nos. type A,
6 nos. type CH and 1 no. type B were suspended in Mid-July due to storage issue.
-
6 nos. of segments at storage line 3 were toppled
on 13 July 2015. The incident is under investigation.
Item |
Number in this reporting period |
Cumulative No. of Precast Segment Completed (up to 28th of each month) |
Segment Cast |
101 |
2362 |
(b)
Off-site Storage:
Area |
No. in Off-site Storage |
A1 |
134 |
A2 |
224 |
A3 |
174 |
A4 |
34 (l/S segment only) |
Precast Concrete Shell Casting
(a) Summary
of precast shell cast in the precast yard:
Type of Shell |
Number of Precast Shell Cast in this reporting
period |
Cumulative No. of Precast Shell Completed (up to 28th of each month) |
CP1 |
Completed |
94 |
CP2 |
Completed |
12 |
CP3 |
2 |
14 |
CP4 |
Completed |
8 |
CP5 |
Completed |
6 |
CP6 |
Completed |
4 |
CP11 |
Completed |
1 |
CP12 |
Completed |
1 |
F1 & F1A |
1 |
2 |
F2 & F2A |
0 |
0 |
Precast Column & Precast Pier Head Casting
(a)
Progress of the precast column & precast pier
head casting:
- All casting works for the
pier heads with bearing support were completed (total 30 units) and the mould
was dismantled in this report period.
- 3 moulds (2 piers
and 1 pier head) are now in service for precasting
works.
- Totally 23 precast
units (16 piers with 6m high, 4 monolithic pier heads and 3 pier heads with
bearing support) were cast in this reporting period.
- Cumulatively 277
precast units were cast.
Delivery for Precast Concrete Elements (by barge)
(a)
Precast Deck Segments:
-
Number of additional barges
engaged in this period: 0
-
Cumulative number of barges: 14
(2 barges tied up on L/S storage)
-
Number of deck segment
deliveries in this period: 23 trips
-
Cumulative number of deck
segment deliveries: 116 trips
Segment Types |
Segment Delivered in this reporting period |
Cumulative No. of Precast Segment Delivered (up to 28th of each month) |
A |
57 |
224 |
B |
0 |
0 |
C |
2 |
6 |
D |
3 |
4 |
E |
74 |
342 |
(b)
Precast column units:
-
Number of additional barges engaged in this period:
0
-
Cumulative number of barges: 2
-
Number of column unit deliveries in this period: 3
trips
-
Cumulative number of column unit deliveries: 33
trips
Unit Types |
Number of units delivered in this reporting period |
Cumulative No. of Precast Column Delivered (up to 28th of month) |
3m |
4 |
23 |
6m |
13 |
86 |
PH1 |
2 |
22 |
PH2 |
0 |
14 |
(c)
Temporary storage of long span segments:
-
3 barges have been unloaded at CCCC4 yard. 2 barges
remain with long span stored with P20 +1, +2. These barges will not unload at
CCCC4 and the segments will remain stored on the barges until required for
delivery to Hong Kong which is estimated to be mid to late September 2015.
(d)
General:
-
Delays in the segment unloading continue to impact
on the delivery cycle to the extent that there are number of barges overstayed
for 14 days in Hong Kong.
-
Loading and unloading was impacted by inclement
weather (typhoon and heavy rain events).
-
It has been necessary to deploy 2 additional barges
to columns delivery in order to overcome storage issues and potential stoppages
at MBEC precast yard.
August 2015:
Land Viaduct
(P85 to Abutment at SHT) & Marine Viaduct (P81 - P84)
(a) P81L&R - 5 pours of column
were completed.
(b) P82L - ELS excavation works is in
progress.
(c) P82R - Pile cap was completed,
column work is in progress.
(d) P83L - ELS excavation works is in
progress.
(e) P83R ¡V Column works was
completed.
(f) Portal Works:
Pier Location |
Progress |
P84 |
Formwork erection is in
progress |
P85 |
Falsework and formwork
erection is in progress |
P86 |
Portal was concreted on 26
August 2015 |
P89 |
Portal was cast on 31 July
2015. Removal of formwork and falsework is in progress |
P90 |
Portal was concreted on 30
June 2015 Removal of falsework and steel
beams are in progress |
P91 |
Portal was cast on 9 June 2015 Removal of steel cross beams
and brackets at L-side was completed |
P92 |
Portal was concreted on 17
July 2015. Removal of falsework is in progress |
Marine Viaduct (P0 to P80)
Progress at
P68
(a) P68 ¡V R3
and R6 were cast, total 10 piles were complete.
(b) One RCD was set up
on R1 casing on 27 Aug 2015 for socket drilling.
Progress at
P69
(a) Sheetpiling works at R-side is in progress.
(b) Sheetpiling works at L-side was completed. Shear pins in
L-side is in progress. Fabrication of L-side 1st and 2nd
layer waling and struts works are in progress.
Progress at
P75
(a) Excavation
to formation at the L-side continues.
Pile Cap
Construction
(a) Precast shells installation ¡V 6
CP1 at P5, P9, P10 and 2 CP3 at P56.
(b) Stage 1 concreting was completed
at P6, P8, P9 &P26L.
(c) Stage 1 works is in progress at
P5 and P56.
(d) Stage 2 concreting was completed
at P2R, P57, P79L and P80.
(e) Stage 2 works is in progress at
P6, P9 and P26L.
(f) Kingpost installation and
associated steel welding works for precast shelll
installation are in progress at D17L.
(g) Advanced concrete trimming
(inside casing) works were carried out at P10, D17R, D18L&R, D19L,
D20L&R, concrete trimming (inside cap shell) were carried out at P6 and
P56.
(h) Submerged pile cap works with cofferdam:
Pier Location |
Side |
Progress |
P72 |
L |
Backfilling and removal
of cofferdam completed on 20-Aug-15 |
R |
Backfilling and removal
of cofferdam completed on 20-Aug-15 |
|
P74 |
L |
Concreting works of pile cap
completed on 21-Aug-15 |
R |
Excavation around the
footprint of pile cap completed and additional of protection concrete wall
was casted Blinding layer was casted on
21-Aug-15 Trimming of pile head concrete
is in progress |
|
P75 |
L |
Rock excavation is in progress |
R |
Rock excavation is in progress |
In-situ Column (Single) Construction
(a) 1st lift works is in progress at P2 & P11.
(b) 1st lift concrete was poured at P11, P13, P55, P54-Ramp & P58-Ramp.
(c) 2nd lift works is in progress at P55, P54-Ramp &
P58-Ramp.
(d) 2nd lift concrete was poured at P78.
(e) 3rd life works is in progress at P78.
(f) Pier head works is in progress at P54, P58 & P70.
(g) Pier head concrete was poured at P58 & P70.
Precast Column Erection
Description |
Location completed in
this reporting period |
Number of Units erected/
Number of Columns completed in this reporting period |
Cumulative No. of Piers
completed (up to 28th of each
month) |
Commencement (ie.
starting from 1st precast unit) |
P14, P15 |
24
(P14-P16, P21, P24, P25, P27-P44) |
Commencement (ie.
starting from 1st precast unit) |
Completion
(ie.completed installation of pier head unit) |
P25,
P27 |
19
(P25, P27-P44) |
Completion
(ie.completed installation of pier head unit) |
Vertical
Tendons Stressed |
P30
(50%) |
15.5
(P28, P29, P30, P32(1/2), P33-P44) |
Vertical
Tendons Stressed |
Grouting
Vertical Tendons |
P29,
P30, P35 |
14
(P28-P30, P34-P44) |
Grouting
Vertical Tendons |
Pier
Head Concrete |
P36-P38 |
9
(P36-P44) |
Pier
Head Concrete |
In-situ Double Blade Column Construction
Pier Location |
Side |
Progress |
P17 |
L |
Poured concrete up to 4th lift and started to
construct 5th lift |
R |
Poured concrete up to 4th lift and started to
construct 5th lift |
|
P76 |
L |
Poured concrete up to 2nd lift and 3rd
lift in progress |
R |
Poured concrete up to 3rd lift and started to
construct pierhead |
|
P77 |
L |
Poured concrete up to 3rd lift and started to
construct pierhead |
R |
Poured concrete up to 3rd lift and started to
construct pierhead |
|
P79 |
L |
Commenced in this reporting period |
R |
Commenced in this reporting period |
Deck Erection
(a)
Setting up of Equipment:
Type of Equipment |
Status |
Lifting
Frames 1 (LF1) |
Assembly of first two sets of
LF1 at WA4 almost completed. Assembly of the third and
fourth set of LF1 is on-going at WA4 Completion of assembly is
targeted by end of September |
Lifting
Frames 3 (LF3) |
First set of LF3 has started
operation at P64 Second set of machines is
being assembled at WA4 and is targeted to be completed in early September |
Launching
Gantry 1 (LG1) |
Segment erection from P114 to
P106 completed |
Launching
Gantry 2 (LG2) |
No segment erection since 27 July 2015 due to
machine breakdown |
(b)
Segment erection:
Type |
Location of Segments erected in this reporting
period |
Number of Segments erected in this reporting period |
Cumulative No. of Segments erected (up to 28th of each month) |
LG1* |
P106 |
28 |
330 |
LG2 |
- |
0 |
160 |
LF3 |
P64 |
25 |
32 |
Typical
Span SOP |
P41,P42, P49 |
12 |
56 |
Long
Span SOP |
P19 |
6 |
12 |
* includes crane erection for P109
Precast Segment
(a)
Segment Casting:
-
Production affected by inclement weather (5.5
days).
-
L/S segments temporary stored at CCCC4¡¦s Machong yard.
-
Off yard storage extension is in progress.
-
All types of segment moulds (34nos) were resumed
works on 27 Aug 15.
-
6 nos. of segments at storage line 3 were toppled
on 13 July 2015. The 6 damaged segments were removed and re-casting of the new
segments are in progress.
-
Line 1 modification of L/S storage ground beam for
MCH1 segment in progress.
Item |
Number in this reporting period |
Cumulative No. of Precast Segment Completed (up to 28th of each month) |
Segment
Cast |
93 |
2455 |
(b)
Off-site Storage:
Area |
No. in Off-site Storage |
A1 |
134
(A) |
A2 |
206 (A) |
A3 |
237 (A, B, E) |
A4 |
116(L/S) & 16(D) |
Precast Concrete Shell Casting
(a) Summary
of precast shell cast in the precast yard:
Type of Shell |
Number of Precast Shell Cast in this reporting
period |
Cumulative No. of Precast Shell Completed (up to 28th of each month) |
CP1 |
Completed |
94 |
CP2 |
Completed |
12 |
CP3 |
Completed |
14 |
CP4 |
Completed |
8 |
CP5 |
Completed |
6 |
CP6 |
Completed |
4 |
CP11 |
Completed |
1 |
CP12 |
Completed |
1 |
F1
& F1A |
0 |
2 |
F2
& F2A |
1 |
1 |
Precast Column & Precast Pier Head Casting
(a)
Progress of the precast column & precast pier
head casting:
- All
casting works for the 6m piers, monolithic pier heads were completed.
- Totally 16 precast units (10 piers with 6m high, 6 monolithic pier
heads) were cast in this reporting period.
- Cumulatively 293 precast units were cast.
- Precast pier head 2-R-H would be re-cast around September.
Delivery for Precast Concrete Elements (by barge)
(a)
Precast Deck Segments:
-
Number of additional barges
engaged in this period: 0
-
Cumulative number of barges: 14
(2 barges tied up on L/S storage)
-
Number of deck segment
deliveries in this period: 21 trips
-
Cumulative number of deck
segment deliveries: 137 trips
Segment Types |
Segment Delivered in this reporting period |
Cumulative No. of Precast Segment Delivered (up to 28th of each month) |
A |
45 |
269 |
B |
0 |
0 |
C |
12 |
18 |
D |
5 |
9 |
E |
36 |
378 |
(b)
Precast column units:
-
Number of additional barges
engaged in this period: 0
-
Cumulative number of barges: 2
-
Number of column unit deliveries in this period: 2
trips
-
Cumulative number of column unit deliveries: 35
trips
Unit Types |
Number of units delivered in this reporting period |
Cumulative No. of Precast Column Delivered (up to 28th of month) |
3m |
0 |
23 |
6m |
8 |
94 |
PH1 |
4 |
26 |
PH2 |
0 |
14 |
(c)
Temporary storage of long span segments:
-
2 barges remain with long span
stored with P20 +1, +2. These barges will not unload at CCCC4 and the segments
will remain stored on the barges until required for delivery to Hong Kong which
is estimated to be mid to late September 2015.
(d)
General:
-
Delivery to LG2 has been
interrupted by mechanical failure of support jacks during this period.
2.11
The valid environmental licenses and permits were attached in
the Monthly EM&A Reports.