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:
·
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;
·
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;
·
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
·
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)
– Ove Arup & Partners Hong Kong Limited (ARUP)
Contractor –Dragages
-China Harbour-VSL JV (DCVJV)
Environmental Team (ET) – 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 (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. H.F Chan |
2151 2088 |
3107 1388 |
Dr. Priscilla Choy |
2151 2089 |
Remark: * A notification
letter was issued to EPD by SOR on 11 February 2015 regarding the change of
Environmental Team Leader (ETL) under Contract No. HY/2011/09 from Dr. H.F Chan to Dr. Priscilla
Choy is effective starting from 16 February 2015.
2.8
ENVIRON Hong Kong Ltd. (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:
December
2014:
Land
Viaduct (P85 to Abutment at SHT) & Marine Viaduct (P81 - P84)
(a) Pile construction is in progress at P82 to P83 and 3 piles were
concreted in this reporting period.
(b) Total 147 pours for column were completed with 8 pours in this
reporting period; 54 columns were completed to top level (26 gridlines – P88, P90 to P114.
(c) Pilecap P84L and P84R was completed.
(d) Pre-bored for sheet pile for
cofferdam construction at P81R & L in progress.
(e) Sewage diversion at P83 is in
progress.
(f) P83L piling work is in progress.
(g) P82L piling work was completed.
(h) Portal P107 dismantling of falsework and steel girder system was completed on 15
December 2014.
(i) Portal P106 falsework
dismantling is in progress.
(j) Portal P95 erection of steel
cross beams and planking at P95R is in progress.
(k) Portal P108 dismantling of falsework and steel bracket system was completed.
(l) Portal P114 installation of
temporary supports and temporary jacks are in progress.
(m) Portal P102 was concreted on 29
November 2014 and removal of falsework is in
progress.
(n) Portal P101 was cast on 9
December 2014 and removal of formwork is in progress.
(o) Portal P97 was concreted on 17
December 2014 and removal of side formwork was in progress.
(p) Portal P98 erection of side
formwork is in progress.
(q) Portal P100 steel fixing is in
progress.
(r) Portal P99 erection formwork is
in progress.
(s) Portal P96 erection of falsework and planking are in progress.
Marine Viaduct (P0 to P80)
RCD Method:
(a) Construction works at P68 and P69 may be
resumed on 23 December 2014.
(b) Remobilization
for P75’s works started on 25 September 2014. Excavation by backhoe on flat top
barge is on-going and steel boxes are under construction at WA7.
(c) Piling
jackets were installed at D18 & P8.
(d) Piling jackets were dismantled at D17 &
D20.
(e) Pile excavations and casing installation are
in progress at P5, P10 & D18 with 6 nos. piles concreted in the reporting
period.
(f) Inter-face coring tests were carried out at
P15, P23, P24 & P80.
(g) Full depth coring test was carried at P24.
(h) Sonic tests were carried out at P15, P23, P55 & P80.
(i) Grouting works were carried out
at P23, P24, P25 & P31.
Kelly
Method:
(j) Piling platform
removal and temporary pile extraction were carried out at P3, P4, P21 & P31.
(k) Pile
excavation by Kelly method are in progress at P2, & P7 and 4 piles
concreted in the reporting period.
(l) All
friction piles by Kelly Method were completed.
(m) All
inter-face core tests were completed.
(n) Full depth coring was carried out at P12-R3.
(o) Sonic
tests were carried out at P1, P2, P7 & P12.
(p) Toe
grouting works were carried out at P1, P2, P3 & P7.
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 |
2 |
Inert
Materials |
TMCLK |
0 |
Inert
Materials |
HK
Open Sea Mud Pits |
3 |
Type
II Materials |
Cross
Boundary Disposal |
4 |
Marine
Mud |
Pilecap Construction:
(a) 10 precast cap shells were installed P14,
P16, P30, P32 & P59.
(b) Stage 1 concreting was completed
at P27, P28, P30, P32 & P59.
(c) Stage 1 works is in progress at P14, P16,
P27, P28, P30, P32 & P52.
(d) Stage 2 concreting was completed at P27,
P28, P29, P67.
(e) Stage 2 works is in progress at P27, P28,
P29, P32, P67.
(f) Kingpost
installation and associated steel welding works for precast shell installation
are in progress at P14, P16, P21, P30, P31 & P53.
(g) Concrete trimming and advanced trimming
(inside casing) works were carried out at P16, P21, P24, P25, P27, P28, P31,
P53, P58 & P59.
Pier Location |
Side |
Progress |
P70 |
L |
Formwork installation for pile cap is in progress; |
R |
Formwork installation for pile cap completed; Re-bar steel fixing is in progress. |
|
P71 |
L |
Concreting works of pile cap completed on 6-Oct-14 |
R |
Concreting works of pile cap completed on 18-Dec-14 |
|
P72 |
L |
Concrete plug was casted on 24-Dec-14; Curing is in progress. |
R |
Installation of 3rd layer of waling & strut
completed; Dewatering to the bottom of cofferdam is in progress. |
|
P73 |
L |
Concreting works of pile cap completed on 4-Dec-14 |
R |
Formwork installation for pile cap completed; Re-bar steel fixing is in progress. |
|
P74 |
L |
Excavation works in progress |
R |
Excavation works in progress |
|
P76 |
L |
Installation of 1st & 2nd
waling & strut completed; Installation of 3rd waling & strut is in
progress. |
R |
Installation of 1st & 2nd
waling & strut completed; Excavation works to be started. |
|
P77 |
L |
Installation of 1st & 2nd
waling & strut completed; Excavation works is in progress. |
R |
Installation of 1st & 2nd
waling & strut completed; Installation of 3rd waling & strut to be
started. |
|
P78 |
L |
Installation of 3rd waling & strut
completed; Cleaning & drainage works is in progress. |
R |
Concrete plug was casted on 17-Dec-14; Installation of 3rd waling & strut to be
started. |
In-situ Column Construction
(a) 1st lift works is in progress at P33, P34, P50, P61, P63 & P64.
(b) 1st lift concrete was poured at P33, P34, P50
& P64.
(c) 2nd lift works is in progress : P50.
(d) 2nd lift concreting was poured: N/A.
(e) Pier head works is in progress at: P49, P51, P60, P65
& P66.
(f) Pier head concreting in progress at P49, P60 & P66.
Precast Column Erection
(g) P37 and P38 – base units installed.
(h) P39 to P41 – all units installed.
(i) P43 to P44 – all units installed.
In-situ Double Blade Column Construction
Pier Location |
Side |
Progress |
P19 |
L |
1st lift works in progress |
R |
1st lift works in progress |
|
P20 |
L |
completed 3rd lift and 4th
lift works in progress |
R |
completed 2nd lift and 3rd
lift works in progress |
|
P71 |
L |
completed 1st lift and 2nd
lift works in progress |
R |
Column works to be started by
end of December |
Marine Portal
(a) Portal construction at P52 commence on 11 Dec 2014. Temporary barrier
piles were driven at the location for safety measures.
Deck Erection
(a)
Setting up of Equipment:
Type of Equipment |
Status |
Segment
Unloading Frame (SUF) |
Fully operational |
Lifting
Frames 1 (LF1) |
Assembly of the first set of
LF1 is on-going at WA4 but is still hampered by lack of available area; Steelwork for the 4th
set of Lifting Frames is under fabrication with some deliveries commenced; |
Lifting
Frames 2 (LF2) |
LF2 at P109-P110 L & R
have now been removed and preliminary works are underway in preparation to erect
P109 span by crane. |
Launching
Gantry 1 (LG1) |
LG1 assembly continues at
Portion C with all components on site; LCB’s and all main truss
elements erected (with the exception of the link trusses). |
Launching
Gantry 2 (LG2) |
Assembly of truss has commenced
with main elements lifted on to pile-caps at P47/P46. Further erection will
be continued after completion of in-situ SOP works. |
- A total
of 22 segments have been erected to date with P45 SOP and one of P46 segments
delivered to site and off-loaded into temporary storage on a “flat-top” barge
during this reporting period.
Precast
Segment
(a) Progress
for mould assembly:
Type of Segment |
Number of Mould |
Status |
A |
10 |
Completed
(including 2 nos. SPO) |
B |
1 |
Completed |
D |
2 |
Completed |
E |
4 |
Completed |
CH1 |
2 |
Completed |
CH2 |
2 |
Completed |
CH3 |
2 |
Completed |
CH4 |
2 |
Completed |
CH5 |
2 |
Completed |
CP
(long span SOP) |
4 |
Completed
(2 x CPA and 2 x CPB) |
DT |
1 |
Completed |
E/EV |
2 |
Completed |
(b)
Segment Casting and Delivery
Item |
Number in this reporting
period |
Cumulative No. of
Precast Shell Completed (up to 28th of each
month) |
Segment
Cast |
215 |
1601 |
Segment
Delivered |
4 |
80 |
(c)
Off-site Storage:
Area |
No. in Off-site Storage |
A1 |
134 |
A2 |
240 |
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 |
5 |
61 |
CP2 |
Completed |
12 |
CP3 |
2 |
4 |
CP4 |
Completed |
8 |
CP5 |
2 |
6 |
CP6 |
2 |
2 |
Precast Column & Precast Pier Head Casting
(a)
Progress of the precast column & precast pier
head casting:
- All the 5 moulds are in service for precast
production;
- Totally 21
precast elements (14 piers with 6m high, 4 monolithic pier heads and 3 pier
heads supporting bearings) were cast in this reporting period.
- Cumulatively
93 precast elements have been produced.
(b)
Delivery Progress:
Item |
No. of units delivered
in this reporting period |
Cumulative No |
Segment
Delivered |
12 (3 trips) |
32 (8 trips) |
January 2015:
Land
Viaduct (P85 to Abutment at SHT) & Marine Viaduct (P81 - P84)
(a) Pile construction is in progress at P83 and 2 piles were concreted
in this reporting period.
(b) Total 158 pours for column were completed with 11 pours in this reporting
period; 57 columns were completed to top level (28 gridlines - P87 to P114).
(c) Backfilling of P84L and P84R are
in progress.
(d) Pre-bored for sheet pile for
cofferdam construction at P81R & L is in progress.
(e) Sewage diversion at P83 was
completed and P82 is in progress.
(f) P83L piling work is in progress.
(g) P83R pile cap excavation work is
in progress.
(h) Portal P107 dismantling of falsework and steel girder system was completed on 18
December 2014.
(i) Portal P106 steel girder system
dismantling was completed on 11 January 2015.
(j) Portal P95 erection of falsework, formwork at P95R, erection of Megashor tower and cross beams at P95L are in progress.
(k) Portal P96 steel fixing is in
progress.
(l) Portal P97 dismantling of steel
brackets system is in progress.
(m) Portal P114 installation of
temporary supports and temporary jacks were completed on 24 January 2015.
Installation of formwork for grouting bearing lower anchors is in
progress. Removal of remaining falsework is scheduled to start on 28 January 2015.
(n) Portal P102 removal of steel
bracket system was completed on 27 January 2015.
(o) Portal P101 was cast on 9 December
2014 and removal of steel bracket system is in progress.
(p) Portal P98 was concreted on 23
January 2015.
(q) Portal P100 was concreted on 3
January 2015 and dismantling of falsework is in
progress.
(r) Portal P99 steel fixing is in
progress.
(s) Portal P94 erection of steel
cross beams and planking are in progress.
(t) Portal
P93 erection of steel bracket system is in progress; and
(u) Construction of drainage work
near P115 Abutment is in progress.
Marine Viaduct (P0 to P80)
RCD Method:
(a) Piling jackets were installed at P6 &
P26-L side.
(b) Piling
jackets were dismantled at P8 & P9.
(c) Pile
excavations and casing installation are in progress at P6 & D18 with 9nos. piles
concreted in the reporting period.
(d) Inter-face coring tests were carried out at
P11, P13 & P15.
(e) Full depth coring test was carried at P24.
(f) Sonic tests were carried out at P11, P13,
P15, P22 & P56.
(g) Grouting works were carried out at P22, P55
& P80.
Kelly
Method:
(h) Piling platform removal
and temporary pile extraction were carried out at P1, P3 & P7.
(i)
Full depth coring was carried out at P12-R3 and P7-L1.
(j) Sonic tests were carried out at P2; and
(k) Toe
grouting works were carried out at P1, P2 & P7.
Disposal from Marine Works
(b)
The disposals in this reporting
period are shown in below table.
Disposal Location |
No of Trip |
Type of Materials |
TM38 |
2 |
Inert
Materials |
TMCLK |
0 |
Inert
Materials |
HK
Open Sea Mud Pits |
2 |
Types
II Marine Mud |
Cross
Boundary Disposal |
9 |
Type I
Marine Mud |
Pilecap Construction:
(a) 10 precast cap shells were installed P21,
P24, P25, P31 & P53.
(b) Stage 1 concreting was completed
at P14, P16, P21, P31 & P53.
(c) Stage 1 works is in progress at P24, P53
& P54.
(d) Stage 2 concreting was completed at P14,
P16, P30 & P59.
(e) Stage 2 works is in progress at P16, P24
& P25.
(f) Kingpost
installation and associated steel welding works for precast shell installation
are in progress at P2, P3, P24, P25 & P53.
(g) Concrete trimming and advanced trimming
(inside casing) works were carried out at P22, P23, P54, P79
& P80.
Pier Location |
Side |
Progress |
P70 |
L |
Concreting works of pile cap completed on 13-Jan-15 |
R |
Concreting works of pile cap completed on 5-Jan-15 |
|
P71 |
L |
Concreting works of pile cap completed on 6-Oct-14 |
R |
Concreting works of pile cap completed on 18-Dec-14 |
|
P72 |
L |
Installation of 3rd layer of waling & strut
completed; Dewatering to the bottom of cofferdam is in progress. |
R |
Steel fixing for pile cap is in progress. |
|
P73 |
L |
Concreting works of pile cap completed on 4-Dec-14 |
R |
Concreting works of pile cap completed on 3-Jan-15 |
|
P74 |
L |
Excavation works is in progress |
R |
Excavation works is in progress |
|
P76 |
L |
Installation of 3rd waling & strut
completed; Excavation works is in progress |
R |
Installation of 1st & 2nd
waling & strut completed; Excavation works is in progress. |
|
P77 |
L |
Concrete plug was casted on 20-Jan-15; Installation of 3rd waling & strut to be
started. |
R |
Installation of 3rd waling & strut
completed; Excavation works is in progress |
|
P78 |
L |
Steel fixing for pile cap is in progress. |
R |
Trimming of pile head concrete completed; Installation of formworks for pile cap to be started. |
In-situ Column Construction
(a) 1st lift works is in progress at P29, P32, P61, P62 & P63.
(b) 1st lift concrete was poured at P32, P61 & P63.
(c) 2nd lift works is in progress at P50.
(d) 2nd lift concreting was poured at P50.
(e) Pier head works is in progress at P51, P63, P64
& P65.
(f) Pier head concreting was poured at P51, P64 & P65.
Precast Column Erection
(g) P35 – base units installed.
(h) P36 – Base and first unit installed.
(i) P37 to P41 – all units installed.
(j) P43 to P44 – all units installed
In-situ Double Blade Column Construction
Pier Location |
Side |
Progress |
P19 |
L |
Completed 1st lift and 2nd lift in
progress |
R |
Completed 1st lift and 2nd lift in
progress |
|
P20 |
L |
Completed 4th lift and 5th lift in
progress |
R |
Completed 4th lift and 5th lift in
progress |
|
P71 |
L |
Completed 2nd lift and pier head in progress |
R |
Completed 1st lift |
Marine Portal
(a) Falsework of the portal at P52 is in progress and construction of portal at P60
was commenced.
Deck Erection
(a)
Setting up of Equipment:
Type of Equipment |
Status |
Lifting
Frames 1 (LF1) |
Assembly of the first set of
LF1 is on-going at WA4; Steelwork for the 4th
set of Lifting Frames is under fabrication with some deliveries commenced. |
Lifting
Frames 3 (LF3) |
Fabrication of LF3 in China
has commenced. |
Launching
Gantry 1 (LG1) |
LG1 assembly has been
completed, load test carried out and segment erection at P110 commenced. |
Launching
Gantry 2 (LG2) |
Truss beams for LG2 have been
erected at P46 and P47 ready for the main truss elements erection. One main
truss is assembled on the P46 and P47 pile caps with the other main truss
partially assembled on a barge. |
- A
cumulative total of 37 segments have been erected.
Precast
Segment
(a) Segment
Casting and Delivery
Item |
Number in this reporting period |
Cumulative No. of Precast Segment Completed (up to 28th of each month) |
Segment
Cast |
176 |
1777 |
Segment
Delivered |
28 |
108 |
(b)
Off-site Storage:
Area |
No. in Off-site Storage |
A1 |
134 |
A2 |
240 |
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 |
6 |
68 |
CP2 |
Completed |
12 |
CP3 |
2 |
6 |
CP4 |
Completed |
8 |
CP5 |
Completed |
6 |
CP6 |
1 |
3 |
Precast Column & Precast Pier Head Casting
(a)
Progress of the precast column & precast pier
head casting:
- All the 5 moulds are in service for precast
production;
- Totally 26
precast elements (19 piers with 6m high, 4 monolithic pier heads and 3 pier
heads supporting bearings) were cast in this reporting period.
- Cumulatively
127 precast elements have been produced.
(b)
Delivery Progress:
Item |
No. of units delivered
in this reporting period |
Cumulative No |
Segment
Delivered |
16 (4 trips) |
48 (12 trips) |
February
2015:
Land
Viaduct (P85 to Abutment at SHT) & Marine Viaduct (P81 - P84)
(a) Pile construction is in progress at P83 and 2 piles were concreted
in this reporting period.
(b) Total 161 pours for column were completed with 3 pours in this reporting
period; 59 columns were completed to top level (28 gridlines - P87 to P114).
(c) Backfilling work and sheetpile removal work of P84L&R are completed.
(d) Pre-bored for sheet pile at P81R
& L are completed, excavation work in progress.
(e) Sewage diversion at P82 is in
progress.
(f) P83L piling work is in progress.
(g) P83R pile cap excavation work is
in progress.
(h) Portal P95 erection of formwork
completed, steel fixing is in progress.
(i) Portal P96 was concreted on 11
February 2015, removal of formwork is in progress.
(j) Portal P97 dismantling of steel
brackets system was completed.
(k) Portal P114 Removal of remaining falsework resumed on 27 January 2015 and it was completed
in early February 2015.
(l) Portal P101 removal of steel
bracket system is in progress.
(m) Portal P98 was concreted on 23
January 2015, removal of soffit formwork & falsework
is in progress.
(n) Portal P100 removal of falsework is in progress.
(o) Portal P99 was concreted on 4
February 2015, removal of formwork is in progress.
(p) Portal P94 erection of vertical
formwork and wing slab scaffold are in progress.
(q) Portal P93 erection of soffit is
in progress.
(r) Portal P92 foundation work for falsework was completed.
(s) Portal P88 erection of planking
above steel bracket was completed, erection of falsework
is in progress.
(t) Portal P87 backfilling temporary
platform for steel bracket erection is in progress;
(u) Construction of drainage work
near P115 Abutment is almost completed, except installation of manhole covers;
and
(v) Excavation work and construction
of temporary foundations for P114 segment temporary supports is in progress.
Marine Viaduct (P0 to P80)
RCD Method:
(a) Piling jackets were installed at D18-R2A
side.
(b) Piling
jackets were dismantled at P6 & P10.
(c) Pile
excavations and casing installation are in progress at P26-L3A and D18-R2A with
9nos. piles concreted in the reporting period.
(d) Inter-face coring tests were carried out at
P10, P11 & P13.
(e) No Full depth coring test was carried.
(f) Sonic tests were carried out at P5, P10
& P57.
(g) Grouting works were carried out at P13 &
P15.
Kelly
Method:
(h) Piling platform removal
and temporary pile extraction were carried out at P2, P7 & P12.
(i)
All pile testing and toe grout works were completed.
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 |
2 |
Inert
Materials |
TMCLK |
0 |
Inert
Materials |
HK
Open Sea Mud Pits |
0 |
Types
II Marine Mud |
Cross
Boundary Disposal |
6 |
Type I
Marine Mud |
Pilecap Construction:
(a) 10 precast cap shells were installed P3, P4,
P17, P22 & P23.
(b) Stage 1 concreting was completed
at P2, P4, P24, P25 & P53R.
(c) Stage 1 works is in progress at P3, P4, P17,
P24, P25 & P53R.
(d) Stage 2 concreting was completed at P21,
P24, P31 & P53.
(e) Stage 2 works is in progress at P3, P25,
P21, P24, P31 & P53.
(f) Kingpost
installation and associated steel welding works for precast shell installation
are in progress at P1, P12, P22 & P23.
(g) Concrete trimming and advanced trimming
(inside casing) works were carried out at P1, P7, P12, P15, P17, P22, P54, P79 & P80.
Pier Location |
Side |
Progress |
P70 |
L |
Concreting works of pile cap completed on 13-Jan-15 |
R |
Concreting works of pile cap completed on 5-Jan-15 |
|
P71 |
L |
Concreting works of pile cap completed on 6-Oct-14 |
R |
Concreting works of pile cap completed on 18-Dec-14 |
|
P72 |
L |
Trimming of pile head concrete completed; Installation of formworks for pile cap is in progress |
R |
Concreting works of pile cap completed on 31-Jan-15 |
|
P73 |
L |
Concreting works of pile cap completed on 4-Dec-14 |
R |
Concreting works of pile cap completed on 3-Jan-15 |
|
P74 |
L |
Excavation works is in progress |
R |
Excavation works is in progress |
|
P76 |
L |
Excavation works is in progress |
R |
Excavation works is in progress |
|
P77 |
L |
Trimming of pile head concrete is in progress |
R |
Concreting works of plug completed on 13-Feb-15; Dewatering to be started |
|
P78 |
L |
Concreting works of pile cap completed on 24-Jan-15 |
R |
Concreting works of pile cap completed on 30-Jan-15 |
In-situ Column Construction
(a) 1st lift works is in progress at P28, P31, P59
& P70.
(b) 1st lift concrete was poured at P29, P30 & P62.
(c) Pier head works is in progress at P50, P61 & P62.
(d) Pier head concreting was poured at P63 & P64.
Precast Column Erection
(e) P33-34 – base units installed.
(f) P35 – Base and First unit installed.
(g) P36 - P38 – Pier Heads installed.
(h) P44 & P41 vertical nailing tendons stressed.
In-situ Double Blade Column Construction
Pier Location |
Side |
Progress |
P19 |
L |
Completed 2nd and 3rd lift |
R |
Completed 2nd lift and 3rd lift in
progress |
|
P20 |
L |
Completed 5th and 6th lift and 7th
lift in progress |
R |
Completed 5th lift and 6th lift in
progress |
|
P71 |
L |
All cast with pier head |
R |
Completed 1st lift and 2nd lift in
progress |
|
P73 |
L |
Completed kicker and 1st lift in progress |
R |
Completed kicker and 1st lift in progress |
Marine Portal
(a) Falsework of the portal at P52 is in progress and construction of portal at P60
was resumed on 23 Feb 2015.
Deck Erection
(a)
Setting up of Equipment:
Type of Equipment |
Status |
Lifting
Frames 1 (LF1) |
Assembly of the first set of
LF1 is on-going at WA4; Steelwork for the 4th
set of Lifting Frames is under fabrication with some deliveries commenced. |
Lifting
Frames 3 (LF3) |
Fabrication of LF3 in China
has commenced. |
Launching
Gantry 1 (LG1) |
LG1 assembly has been
completed, load test carried out and segment erection at P110 commenced. |
Launching
Gantry 2 (LG2) |
Truss beams for LG2 have been
erected at P46 and P47 ready for the main truss elements erection. One main truss
is assembled on the P46 and P47 pile caps with the other main truss partially
assembled on a barge. |
- A
cumulative total of 37 segments have been erected.
Precast
Segment
(a) Segment
Casting and Delivery
Item |
Number in this reporting period |
Cumulative No. of Precast Segment Completed (up to 28th of each month) |
Segment
Cast |
176 |
1777 |
Segment
Delivered |
28 |
108 |
(b)
Off-site Storage:
Area |
No. in Off-site Storage |
A1 |
134 |
A2 |
240 |
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 |
6 |
74 |
CP2 |
Completed |
12 |
CP3 |
1 |
7 |
CP4 |
Completed |
8 |
CP5 |
Completed |
6 |
CP6 |
0 |
3 |
Precast Column & Precast Pier Head Casting
(a)
Progress of the precast column & precast pier
head casting:
- All the 5 moulds are in service for precast
production;
- Totally 10
precast elements (8 piers with 6m high and 2 monolithic pier heads) were cast
in this reporting period.
- Cumulatively
137 precast elements have been produced.
(b)
Delivery Progress:
Item |
No. of units delivered
in this reporting period |
Cumulative No |
Segment
Delivered |
8 (2 trips) |
56 (14 trips) |
2.11
The valid environmental licenses and permits were attached in
the Monthly EM&A Reports.