CN106087777B - The construction method of high pier long cantilever Cast-in-place Bent Cap combined type formwork system - Google Patents
The construction method of high pier long cantilever Cast-in-place Bent Cap combined type formwork system Download PDFInfo
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- CN106087777B CN106087777B CN201610628993.6A CN201610628993A CN106087777B CN 106087777 B CN106087777 B CN 106087777B CN 201610628993 A CN201610628993 A CN 201610628993A CN 106087777 B CN106087777 B CN 106087777B
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- 238000010276 construction Methods 0.000 title claims abstract description 27
- 238000009415 formwork Methods 0.000 title claims abstract description 11
- 239000000725 suspension Substances 0.000 claims abstract description 34
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 24
- 239000010959 steel Substances 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000009413 insulation Methods 0.000 claims abstract description 9
- 230000035939 shock Effects 0.000 claims abstract description 9
- 230000002265 prevention Effects 0.000 claims abstract description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 238000013016 damping Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 235000015170 shellfish Nutrition 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/10—Cantilevered erection
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The high pier long cantilever Cast-in-place Bent Cap combined type formwork system of the present invention and construction method, structure mainly include：Cushion cap, the steel plate of falling groove profile, shock insulation piece, rubber stopper, bridge pier, bent cap, limiting plate, crab-bolt, middle support post suspension column locking screw, middle support post, transverse connecting rod, column braces, hinge, middle hound, protection network, Bailey beam, backing plate, jack, short stanchion, adjustable jacking, bent cap end template, while support post, prefabricated strip footing, pre-buried screw shell, while support post suspension column locking screw, support beam.Main construction procedure includes：1) cushion cap construction of prevention work；2) support post is set up in；3) support beam is set up；4) Bailey beam is installed；5) side support post is set up；6) bent cap end template is installed；7) gutter is laid；8) bent cap is poured.Construction method formwork system rigidity of the present invention is big, small to road traffic influence on system operation, and drainage effect is notable in construction, with preferable economic technology benefit.
Description
Technical field
The present invention relates to the construction of bridge pier upper cantilever arm bent cap.
Background technology
In current bridge coping construction, its stress system type is a lot, such as girder steel method, Support Method, pre-embedded steel slab welding three
Angular bracing members method, Hold Hoop method etc..When the cantilever of bent cap is long, preferred Support Method, conventional support force body in construction
System has two kinds：Land full hall steel tubular scaffold with couplers, gate type steel pipe scaffold (support).
When construction area is located at the urban district big location of people's vehicle flowrate, work progress must assure that the normal operation that is open to traffic, and tradition is full
Hall rack construction can not meet requirement.
In consideration of it, conventional support system uses gate type steel pipe scaffold and anchor ear suspension scaffold, gate type steel pipe scaffold by
Clearly, there is quality, potential safety hazard big, it is necessary to artificial more in technology maturation, but speed of application is slow, construction period length to power；Anchor ear hangs
Builder's jack is basic using existing pier footing as stress, saves the time for pouring basis again；Stress column is put down with overhead bridge pier
Row arrangement, reduces the occupancy to vehicles and pedestrians road, alleviates the traffic pressure that construction is brought, but cantilever design system exists
There is the risk of stability in the case of high buttress.
The content of the invention
It is an object of the invention to provide high pier long cantilever Cast-in-place Bent Cap combined type formwork system and construction method, to realize
Above-mentioned purpose, present invention employs following technical scheme：
High pier long cantilever Cast-in-place Bent Cap combined type formwork system, including：Cushion cap, the steel plate of falling groove profile, shock insulation piece, rubber stopper,
Bridge pier, bent cap, limiting plate, crab-bolt, middle support post suspension column locking screw, middle support post, transverse connecting rod, column braces,
Hinge, middle hound, protection network, Bailey beam, backing plate, jack, short stanchion, adjustable jacking, bent cap end template, side support are vertical
Post, prefabricated strip footing, pre-buried screw shell, side support post suspension column locking screw, vertical rod, fastening bolt, Prefabricated Concrete draining
Ditch, lanyard, rubble, roadbed, support beam.Middle support post bottom passes through middle support post suspension column locking screw and limiting plate phase
Even, limiting plate is fixed on the steel plate of falling groove profile by crab-bolt, and shock insulation piece is attached to cushion cap both sides by tack adhesive, and middle hound leads to
The stud connection crossed on middle support post and Bailey beam, wedge is installed between bent cap end template and vertical rod and adjustable jacking
Shape sheeting caps.
The construction method of high pier long cantilever Cast-in-place Bent Cap, including following construction procedure：
1) cushion cap construction of prevention work：It is embedded with bridge pier interstitial site at the top of cushion cap before cushion cap concrete is unhardened
Groove profile steel plate, the steel plate of falling groove profile and bridge pier bottom preset clearance, gap is filled with rubber stopper；
2) support post is set up in：First limiting plate is fixed on the steel plate of falling groove profile by crab-bolt, and middle support post bottom leads to
Cross middle support post suspension column locking screw with limiting plate to be connected, after middle support post suspension column is fixed, setting up temporary support prevents
Column is toppled over, and finally installs transverse connecting rod and column braces；
3) support beam is set up：After middle support post is fixed and to form integral structural post, in the formation of middle support post
Lattice capital is installed by support beam；
4) Bailey beam is installed：Bailey beam rides upon support beam top, and middle hound passes through installed in middle support post and shellfish
Stud connection on Lei Liang；
5) side support post is set up：Slot grooving is first carried out in precalculated position, prefabricated strip footing, side support post is buried
Be inserted into respectively in prefabricated strip footing by default spacing, while support post suspension column by while support post suspension column locking screw with
Prefabricated strip footing is fixed, and is connected in most backward preform strip shape foundation trench at the top of backfill rubble, side support post with Bailey beam；
6) bent cap end template is installed：Bent cap end template is installed, temporary supports is provided by jack, passes through adjustable top
Support carrys out adjusting template height, after treating that position is fixed, then installs vertical rod in jack both sides, and vertical rod is removed very heavy after fixing
Top；
7) gutter is laid：Using Prefabricated Concrete gutter, rubble is backfilled into groove, Prefabricated Concrete gutter is put into, prefabricated
Lanyard is installed close to cushion cap side in gutter；
8) bent cap is poured：Poured using primary concreting principle；
As preferred：Step 5) described in pre-buried screw shell, side support post suspension column lock are set in prefabricated strip footing
Gu screw rod two ends are fixed with pre-buried screw shell, the support post when support post suspension column locking screw is passed through, by fastening spiral shell
Bolt is fixed.
Beneficial effect：
(1) encorbelmented support using combined type, runway is normally run, accomplish that top is constructed synchronous with bottom driving.
(2) side support post is set in outside, and stable cantilever supporting frame ensure that branch on the premise of not influenceing track to run
The safety of die body system.
(3) prefabricated bar shaped gutter is set, the draining of construction site can be carried out fast and flexible.
Brief description of the drawings
Fig. 1 is high pier long cantilever Cast-in-place Bent Cap combined type formwork system structural representation；
Fig. 2 is middle support post suspension column organigram；
Fig. 3 is side support post suspension column organigram；
Description of reference numerals：1. cushion cap；2. the steel plate of falling groove profile；3. shock insulation piece；4. rubber stopper；5. bridge pier；6. bent cap；7. limit
Position plate；8. crab-bolt；9. in support post suspension column locking screw；10. in support post；11. transverse connecting rod；12. column braces；
13. hinge；14. in hound；15. protection network；16. Bailey beam；17. backing plate；18. jack；19. short stanchion；20. it is adjustable
Jacking；21. bent cap end template；22. side support post；23. prefabricated strip footing；24. pre-buried screw shell；25. side support is vertical
Post suspension column locking screw；26. vertical rod；27. fastening bolt；28. Prefabricated Concrete gutter；29. lanyard；30. backfill rubble；31.
Roadbed；32. support beam.
Embodiment
In this implementation such as present embodiment welding for steel structure technique, bolt connection construction technology, template-setup technique just not
Stated tired, emphasis illustrates that the present invention relates to the embodiment of structure.
High pier long cantilever Cast-in-place Bent Cap combined type formwork system, including：Cushion cap 1, the steel plate of falling groove profile 2, shock insulation piece 3, rubber
Plug 4, bridge pier 5, bent cap 6, limiting plate 7, crab-bolt 8, middle support post suspension column locking screw 9, middle support post 10, transverse connecting rod
11st, column braces 12, hinge 13, middle hound 14, protection network 15, Bailey beam 16, backing plate 17, jack 18, short stanchion 19, can
Mode jacking 20, bent cap end template 21, while support post 22, prefabricated strip footing 23, pre-buried screw shell 24, while support post
Suspension column locking screw 25, vertical rod 26, fastening bolt 27, Prefabricated Concrete gutter 28, lanyard 29, rubble 30, roadbed 31, support beam
32.The middle bottom of support post 10 is connected by middle support post suspension column locking screw 9 with limiting plate 7, and limiting plate 7 passes through crab-bolt 8
It is fixed on the steel plate of falling groove profile 2, shock insulation piece 3 is attached to the both sides of cushion cap 1 by tack adhesive, middle hound 14 passes through installed in middle branch
Hinge 13 on support column 10 and Bailey beam 16 is connected, and wedge is installed between bent cap end template 21 and vertical rod 26 and adjustable jacking 20
Shape sheeting caps.
The construction method of high pier long cantilever Cast-in-place Bent Cap, including following construction procedure：
1) construction of prevention work of cushion cap 1：Before the concrete of cushion cap 1 is unhardened, buried at the top of cushion cap 1 with the interstitial site of bridge pier 5
If the steel plate of falling groove profile 2, the steel plate of falling groove profile 2 and the bottom preset clearance of bridge pier 5, gap rubber stopper 4 are filled；
2) support post 10 is set up in：First limiting plate 7 is fixed on the steel plate of falling groove profile 2 by crab-bolt 8, middle support post 10
Bottom is connected by middle support post suspension column locking screw 9 with limiting plate 7, after the middle suspension column of support post 10 is fixed, is set up and is faced
When support prevent column from toppling over, transverse connecting rod 11 and column braces 12 are finally installed,
3) support beam 30 is set up：After the fixation of middle support post 10 forms integral structural post, in middle support post 10
The lattice capital of formation is installed by support beam 30；
4) Bailey beam 16 is installed：Bailey beam 16 rides upon the top of support beam 26, and middle hound 14 passes through installed in middle support
Hinge 13 on column 10 and Bailey beam 16 is connected；
5) side support post 22 is set up：Slot grooving is first carried out in precalculated position, prefabricated strip footing 23, side support is buried
Column 22 is inserted into prefabricated strip footing 23 respectively by default spacing, while the suspension column of support post 22 by while support post suspension column
Locking screw 25 is fixed with prefabricated strip footing 23, backfill rubble 30, side support post in most backward basic 23 grooves of preform strip shape
22 tops are connected with Bailey beam 16；
6) bent cap end template 21 is installed：Bent cap end template 21 is installed, temporary supports are provided by jack 18, by can
Mode jacking 20 carrys out adjusting template height, after treating that position is fixed, then installs vertical rod 26 in the both sides of jack 18, vertical rod 26 is fixed
Jack 18 is removed afterwards；
7) gutter is laid：Using Prefabricated Concrete gutter 28, rubble 30 is backfilled into groove, Prefabricated Concrete gutter 28 is put into,
Lanyard 29 is installed close to the side of cushion cap 1 in prefabricated gutter 28；
8) bent cap 6 is poured：Poured using primary concreting principle；
Step 5) described in pre-buried screw shell 24, side support post suspension column locking screw are set in prefabricated strip footing 23
25 two ends are fixed with pre-buried screw shell 24, the support post 22 when support post suspension column locking screw 25 is passed through, and pass through fastening
Bolt 27 is fixed.
Shown in reference picture 1, in figure：Prefabricated strip footing 23 and Prefabricated Concrete gutter 28 are flushed with road surface, and road surface sets 3%
Drainage grade, middle support post 10 is is arranged symmetrically totally 8, the vertical spacing of transverse connecting rod 11 support post 10 in
Stability Calculation is determined.
Shown in reference picture 2, in figure, shock insulation piece 3 is derived from top surface and plays the length that 2/3 cushion cap 1 bassets.
Claims (2)
1. a kind of construction method of high pier long cantilever Cast-in-place Bent Cap combined type formwork system, high pier long cantilever Cast-in-place Bent Cap combined type
Formwork system includes：Cushion cap (1), the steel plate of falling groove profile (2), shock insulation piece (3), rubber stopper (4), bridge pier (5), bent cap (6), limiting plate
(7), crab-bolt (8), middle support post suspension column locking screw (9), middle support post (10), transverse connecting rod (11), column braces
(12), hinge (13), middle hound (14), protection network (15), Bailey beam (16), backing plate (17), jack (18), short stanchion
(19), adjustable jacking (20), bent cap end template (21), side support post (22), prefabricated strip footing (23), pre-buried thread bush
Cylinder (24), side support post suspension column locking screw (25), vertical rod (26), fastening bolt (27), Prefabricated Concrete gutter (28), damping
Band (29), rubble (30), roadbed (31) and support beam (32)；Middle support post (10) bottom is locked by middle support post suspension column
Screw rod (9) is connected with limiting plate (7), and limiting plate (7) is fixed on the steel plate of falling groove profile (2) by crab-bolt (8), and shock insulation piece (3) leads to
Cross tack adhesive and be attached to cushion cap (1) both sides, middle hound (14) passes through on middle support post (10) and Bailey beam (16)
Hinge (13) connection, between bent cap end template (21) and vertical rod (26) and adjustable jacking (20) installation chock plate, its
It is characterised by, including following construction procedure：
1) cushion cap (1) construction of prevention work：Before cushion cap (1) concrete is unhardened, with bridge pier (5) gap digit at the top of cushion cap (1)
The embedded steel plate of falling groove profile (2), the steel plate of falling groove profile (2) and bridge pier (5) bottom preset clearance are put, gap is filled with rubber stopper (4)；
2) support post (10) is set up in：First limiting plate (7) is fixed on the steel plate of falling groove profile (2) by crab-bolt (8), and middle support is vertical
Post (10) bottom is connected by middle support post suspension column locking screw (9) with limiting plate (7), and middle support post (10) suspension column is fixed
Afterwards, setting up temporary support prevents column from toppling over, and finally installs transverse connecting rod (11) and column braces (12)；
3) support beam (32) is set up：After middle support post (10) fixation forms integral structural post, in middle support post
(10) support beam (32) is installed in the lattice capital formed；
4) Bailey beam (16) is installed：Bailey beam (16) rides upon support beam (32) top, and middle hound (14) is by
Hinge (13) connection on support post (10) and Bailey beam (16)；
5) side support post (22) is set up：Slot grooving is first carried out in precalculated position, prefabricated strip footing (23), side support is buried
Column (22) is inserted into prefabricated strip footing (23) respectively by default spacing, while support post (22) suspension column by while support and stands
Post suspension column locking screw (25) is fixed with prefabricated strip footing (23), backfill rubble in most backward basic (23) groove of preform strip shape
(30), it is connected at the top of side support post (22) with Bailey beam (16)；
6) bent cap end template (21) is installed：Bent cap end template (21) is installed, temporary supports is provided by jack (18), passes through
Adjustable jacking (20) carrys out adjusting template height, after treating that position is fixed, then installs vertical rod (26) in jack (18) both sides, stands
Jack (18) is removed after bar (26) is fixed；
7) gutter is laid：Using Prefabricated Concrete gutter (28), rubble (30) is backfilled into groove, Prefabricated Concrete gutter is put into
(28) lanyard (29), is installed close to cushion cap (1) side in Prefabricated Concrete gutter (28)；
8) bent cap (6) is poured：Poured using primary concreting principle.
2. the construction method of high pier long cantilever Cast-in-place Bent Cap combined type formwork system according to claim 1, its feature exists
In：Step 5) described in pre-buried screw shell (24), side support post suspension column locking screw are set in prefabricated strip footing (23)
(25) two ends and pre-buried screw shell (24) are fixed, the support post (22) when support post suspension column locking screw (25) is passed through,
It is fixed by fastening bolt (27).
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| CN201610628993.6A CN106087777B (en) | 2016-08-03 | 2016-08-03 | The construction method of high pier long cantilever Cast-in-place Bent Cap combined type formwork system |
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| CN201610628993.6A CN106087777B (en) | 2016-08-03 | 2016-08-03 | The construction method of high pier long cantilever Cast-in-place Bent Cap combined type formwork system |
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| CN110080116B (en) * | 2019-05-30 | 2024-08-16 | 甘肃路桥建设集团有限公司 | Large-span prestressed bent cap temporary supporting device and construction method thereof |
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| CN115323920B (en) * | 2022-07-12 | 2024-10-11 | 中建八局第二建设有限公司 | Construction supporting device for overhead bridge bent cap of middle pier column and using method |
| CN115341471A (en) * | 2022-08-04 | 2022-11-15 | 中国水利水电第九工程局有限公司 | Construction method of pre-embedded steel bar method support system |
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Effective date of registration: 20180522 Address after: No. 3388, Yinzhou District Cang Hai Road, Yinzhou District, Ningbo, Zhejiang Patentee after: Zhejiang sea Construction Co., Ltd. Address before: 310015 room 3, unit 3, Wanda Commercial Center, Hangzhou, Zhejiang, 1901. Patentee before: Hangzhou Jiang Run Science and Technology Ltd. |