Construction method of 14 box culvert.pdf
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Construction method of 14 box culvert(3人评价)
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箱涵施工
PROJECT: APPROACH ROAD OF CAN THO SIDE PACKAGE: 3 CONSULTANT: JV CONSULTANT CONTRCTOR: CSCEC
CONSTRUCTION METHOD STATEMENT FOR BOX CULVERT
1. Description
1.1 Quantity
There are total 14 sets box culverts for drainage with two types size (Type A: 2 x 2.5 x1.5m; Type B: 2 x 2.5 x
2m) in Package3. The more details refer to the following list:
LIST OF BOX CULVERT
left center right
1 Km7+826 2x2.5 x2 30.62 4.06 4.28 4.06 0.2 drainage
2 Km8+890 2x2.5 x2 38.7 3.3 3.685 3.418 0.55 drainage
3 Km9+326 2x2.5 x1.5 24.1 2.502 2.747 2.502 0.252 drainage
4 Km9+620 2x2.5 x1.5 30.92 2.514 2.869 2.514 0.264 drainage
5 Km10+310 2x2.5 x2 30.21 3.637 3.9 3.575 0.825 drainage
6 Km10+690 2x2.5 x1.5 24.1 2.419 2.664 2.419 0.169 drainage7 Km10+950 2x2.5 x1.5 24.1 2.539 2.784 2.539 0.289 drainage
8 Km11+451 2x2.5 x1.5 24.1 2.843 3.088 2.843 0.593 drainage
9 Km11+690 2x2.5 x1.5 24.1 2.955 3.2 2.955 0.705 drainage
10 Km12+180 2x2.5 x2 32.9 5.105 5.35 5.105 0.7 drainage
11 Km12+756 2x2.5 x2 28.53 3.656 3.9 3.619 0.7 drainage
12 Km13+600 2x2.5 x1.5 24.1 2.624 2.869 2.624 0.374 drainage
13 Km14+450 2x2.5 x1.5 24.1 3.199 3.444 3.199 0.949 drainage
14 Km14+890 2x2.5 x1.5 24.1 2.425 2.67 2.425 0.175 drainage
Finished elevation (m) Bottomelevation
(m)remarkNo. Station Size (m) length
(m)
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风中黑狼1贡献于2011-07-27
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1
PROJECT: APPROACH ROAD OF CAN THO SIDE PACKAGE: 3 CONSULTANT: JV CONSULTANT CONTRCTOR: CSCEC
1.2 Related articles
Concrete:
The batch plant concrete will be used for the castinsite culvert, and the requirement of the concrete refers
to the following list:
LIST OF REQUIREMENT FOR CONCRETE
Concrete Class Strength
f’c (MPa) Kind of structure in use
E 24 Box culvert, pipe culvert Retaining wall, wing wall, support of pipe, drop inlet, catch cover
F 20 Apron, kerb
G 15 Lean concrete
Rebar:
No Description Strength
f’y (MPa) Related specification
1 PLAIN ROUND BAR 250(Min) ASTM A615 or equivalent
2 High yield deformed bar 390(Min) ASTM A615 or equivalent
Specification: LIST OF RELATED SPECIFICATION
NO. RELATED SPECIFICATION
1. AASHTO 98 _ LRFD BRIDGE DESIGN SPECIFICATION
2. AASHTO GUIDE SPECIFICATION FOR DESIGN AND CONSTRUCTION OF SEGMENT CONCRETE BRIDGES
3 VIETNAMESE HIGHWAY BRIDGE STANDARD 1979
2. Preparation for construction
2.1 Material
① Rebar: the grade, dimension should be accordance to the contract requirement, supply with
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① Rebar: the grade, dimension should be accordance to the contract requirement, supply with
PROJECT: APPROACH ROAD OF CAN THO SIDE PACKAGE: 3 CONSULTANT: JV CONSULTANT CONTRCTOR: CSCEC
3
certification of quality, and keep the rebar surface from rust.
② Cement: Use the qualified PC40 type.
③ Course aggregate: gravel>1X2cm, capacity of compress resistance≥ 500kg/cm2, impurity
ratio<1%;
④ Sand: course sand or river sand, impurity ration<2%
⑤ Water: living water
⑥ Excavation under water level: Steel pile (L=12m), Shape steel for guide frame (400x400, 300x300),
Steel reinforcement cage with steel mesh (main steel bar d=25, L=1m, cage d=0.8m)
2.2 Equipment/machine
① Excavation: vibration hammers, crawler crane, grab, bulldozer, loading vehicle, shovel, manual
truck, grade stick, etc.
② Rebar work: rebar hook, wrench, ripping bar, curve machine, 22# iron thread, etc.
③ Formwork & support: 18mm thickness wood veneer formwork, 50X100mm timber, 3mm thickness
steel plate formwork, Ø48×3 steel pipe and steel support, Ø16 tension bar, axe, handsaw, power saw,
etc.
④ Equipment for pouring concrete: internal vibrator, shovel, hose, concrete tank car, concrete bucket,
concrete conduit pipe, wood float;
⑤ Equipment for drainage: Water pump, temporary electric facilities, pipes
2.3 Preprocedure
① Complete the R.C pile works for the foundation, and get covering acceptance minute for the pile
works;
② Site clear and grub, arrange site plan, the material, formwork, timber will be stacked in sort.
③ Study the working drawing, confirm the location of embed rebar, the installation sequence of
formwork, and concrete casting sequence; ④ Before the next stage procedure, get the acceptance minute or temporary inspection for the
current procedure, make a record and report when the inspection is qualified.
3. Working procedure
3.1 Working sequence The working sequence will be described as the following:
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PROJECT: APPROACH ROAD OF CAN THO SIDE PACKAGE: 3 CONSULTANT: JV CONSULTANT CONTRCTOR: CSCEC
4
3.2 Procedure description
① Foundation: the box culvert base and apron was used 350×350 R.C pile. Until now the RC pile foundation was almost completed in accordance with the Engineer ’s request on site
Pile construction
Excavation
Cut pile head
Bedding concrete
Rebar for culvert Base & side wall (50cm) Formwork for culvert Base & sidewall Concrete for Base & side wall
Rebar for Slab and side wall
Formwork for Slab & side wall
Concrete for Slab & side wall
Connection joint
Rebar for Wing wall
Formwork for Wing wall
Connection joint
Concrete for Wing wall
Apron Construction
Formwork dismantle
Backfilling
WORK SEQUENCE FOR BOX CULVERT
Approach slab
PROJECT: APPROACH ROAD OF CAN THO SIDE PACKAGE: 3 CONSULTANT: JV CONSULTANT CONTRCTOR: CSCEC
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CONSULTANT: JV CONSULTANT CONTRCTOR: CSCEC
5
② Excavation:
Due to current condition on site, the work level after excavation is under the water level for all box
culverts. And the countermeasure for excavating under the water is necessary. The more detail
information refers to following table:
CONDATION OF WATER ELEVATION AT BOX CULVERT
1 K m 7 + 8 2 62 x 2 . 5 x 23 0 . 6 2 0 . 2 0 . 4 5 M a x l e v e l > 1 . 3 md r a i n a g e2 K m 8 + 8 9 02 x 2 . 5 x 23 8 . 7 0 . 5 5 0 . 1 M a x l e v e l > 1 . 3 md r a i n a g e
3 K m 9 + 3 2 62 x 2 . 5 x 1 . 52 4 . 1 0 . 2 5 2 0 . 3 9 8 M a x l e v e l > 1 . 3 md r a i n a g e
4 K m 9 + 6 2 02 x 2 . 5 x 1 . 53 0 . 9 2 0 . 2 6 4 0 . 3 8 6 M a x l e v e l > 1 . 3 md r a i n a g e
5 K m 1 0 + 3 1 02 x 2 . 5 x 23 0 . 2 1 0 . 8 2 5 0 . 1 7 5 M a x l e v e l > 1 . 3 md r a i n a g e
6 K m 1 0 + 6 9 02 x 2 . 5 x 1 . 52 4 . 1 0 . 1 6 9 0 . 4 8 1 M a x l e v e l > 1 . 3 md r a i n a g e
7 K m 1 0 + 9 5 02 x 2 . 5 x 1 . 52 4 . 1 0 . 2 8 9 0 . 3 6 1 M a x l e v e l > 1 . 3 md r a i n a g e
8 K m 1 1 + 4 5 12 x 2 . 5 x 1 . 52 4 . 1 0 . 5 9 3 0 . 0 5 7 M a x l e v e l > 1 . 3 md r a i n a g e
9 K m 1 1 + 6 9 02 x 2 . 5 x 1 . 52 4 . 1 0 . 7 0 5 0 . 0 5 5 M a x l e v e l > 1 . 3 md r a i n a g e
10 Km12+180 2x2.5 x2 32.9 0.7 0.05 Max level > 1.3m drainage
11 Km12+756 2x2.5 x2 28.53 0.7 0.05 Max level > 1.3m drainage
12 Km13+600 2x2.5 x1.5 24.1 0.374 0.276 Max level > 1.3m drainage13 Km14+450 2x2.5 x1.5 24.1 0.949 0.299 Max level > 1.3m drainage
14 Km14+890 2x2.5 x1.5 24.1 0.175 0.475 Max level > 1.3m drainage
B o t t o me l e v a t i o n
(m)r e m a r kN o . S t a t i o n S i z e ( m )l e n g t h(m)
E x c a v a t i o nl e v e l f o r b o xc u l v e r t ( m )
C u r r e n t w a tl e v e l i n F e b r u a r y
2 0 0 9 ( m )
According to site condition on every location, the Contractor will propose to apply two methods of
excavation under water for 14 box culvert. One method is driving steel piles (L=12m) for cofferdam
along with the bound of excavation. Other method will use the associated operation method of
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