CN107100083A - A kind of T-shaped high pier Cast-in-place Bent Cap formwork erecting structure and construction method - Google Patents
A kind of T-shaped high pier Cast-in-place Bent Cap formwork erecting structure and construction method Download PDFInfo
- Publication number
- CN107100083A CN107100083A CN201710487857.4A CN201710487857A CN107100083A CN 107100083 A CN107100083 A CN 107100083A CN 201710487857 A CN201710487857 A CN 201710487857A CN 107100083 A CN107100083 A CN 107100083A
- Authority
- CN
- China
- Prior art keywords
- support
- regularization
- steelframe
- steel
- bent cap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses the T-shaped high pier Cast-in-place Bent Cap formwork erecting structure of one kind, including cushion cap, steel plate sash plate is fixedly installed at the top of the cushion cap, it is respectively fixedly connected with end positions provided with prefabricated reinforced concrete backing plate, intersecting parallels support is provided with above the steel plate sash plate, set shaped steel formwork is provided with above the intersecting parallels support, the intersecting parallels support two ends connection sets rack rod, regularization steelframe is provided between the top of the intersecting parallels support and the top of rack rod, and regularization steelframe is fixedly connected with intersecting parallels support and rack rod respectively, I-steel is provided between the regularization steelframe and set shaped steel formwork；The top of the prefabricated reinforced concrete backing plate is provided with bowl fastening type support.The beneficial effects of the invention are as follows by the use of existing cushion cap and precast rc slab concrete as carrying basis, reduce the work such as the smooth, ground hardening of the cubic metre of earth and stone, save basement process machinery cost, concrete material expense and labour cost, shorten the duration.
Description
Technical field
The present invention relates to technical field of bridge engineering, and in particular to a kind of T-shaped high pier Cast-in-place Bent Cap formwork erecting structure and construction
Method.
Background technology
Viaduct, light rail viaduct in the important way of science of bridge building modern construction road traffic system, city, high ferro
The part of road traffic system is belonged to track for a train overpass.Pier cap beam construction is one commonly used in bridge construction
Kind of technology, but because technical merit requires higher, support cast-in-place structure be in bridge structure compared with frequently with structure type.
At present, Coping Construction falsework form mainly has two major classes：Console, non-floor-bracket.Without landing branch
Frame is not set up by ground, but utilizes the pillarwork poured in the hanging mould for forming bracket at the top of pier stud and setting up
Board mount, includes crossing shaped steel method, Hold Hoop method and pre-embedded steel slab method etc. according to the generation type of bracket.Urban interchange due to
Space is limited, and crossing elimination situation often occurs, Bridges in Mountainous Areas landform is rugged and rough, geological condition differs, and sets up full framing
Concept feasible is very low, for high bridge pier capping beam, sets up that full framing is highly big, and security is low, and material, personnel, input
It is very big.Hold Hoop method support is applied to the circle pier stud Coping Construction that height is big or ground is bad, but for the huge feelings of bent cap structure
Also there is obvious shortcoming in condition, conventional hoop bracket method：1. manually calculated using simplified model, as a result anchor ear deadweight is larger,
Bolt quantity is more, assembling and disassembling inconvenience.2. the performance of anchor ear directly influences the safety of whole support, and the performance of anchor ear remove with
Be designed with outside the Pass, also with installation quality especially high-strength bolt to tighten degree relevant, how to verify anchor ear security performance and really
It is a difficulties to determine installation parameter.3. because anchor ear is non-floor-bracket, whole support typically has large-scale truss girder,
Also substantial amounts of shaped steel secondary beam, the assembling and disassembling of support needs substantial amounts of high-altitude lifting job and mechanical one-shift, security threat
It is many.So there is also some problems urgently technological improvement in actual construction.
The content of the invention
In order to solve problems of the prior art, the invention provides a kind of T-shaped cast-in-place lid of high pier rational in infrastructure
Beam formwork erecting structure and construction method.
Technical scheme is as follows：
A kind of T-shaped high pier Cast-in-place Bent Cap formwork erecting structure, including cushion cap, it is characterised in that steel plate is fixedly installed at the top of the cushion cap
It is respectively fixedly connected with sash plate, end positions provided with prefabricated reinforced concrete backing plate, the steel plate sash plate top is provided with well
Font support, is provided between the intersecting parallels support and cushion cap above the jack for adjusting elevation, the intersecting parallels support
Provided with set shaped steel formwork, Cast-in-place Bent Cap is laid on the set shaped steel formwork；The intersecting parallels support two ends connection sets branch to erect
Bar, between the top of the intersecting parallels support and the top of rack rod be provided with regularization steelframe, and regularization steelframe respectively with
Intersecting parallels support and rack rod are fixedly connected, and I-steel is provided between the regularization steelframe and set shaped steel formwork；It is described pre-
The top of armored concrete backing plate processed is provided with bowl fastening type support, and described bowl fastening type support one end is consolidated with prefabricated reinforced concrete backing plate
Fixed connection, the other end is supported on regularization steelframe bottom.
A kind of described T-shaped high pier Cast-in-place Bent Cap formwork erecting structure, it is characterised in that the intersecting parallels internal stent upper end position
Putting place and being provided with bottom at intersecting parallels support diagonal brace, lower end position and be provided with is used for the regulation spiral shell that intersecting parallels support diagonal brace supports regulation
Bolt.
Described a kind of T-shaped high pier Cast-in-place Bent Cap formwork erecting structure, it is characterised in that the bowl fastening type support interposition is installed
There is bridging, lower end position is provided with bar of sweeping the floor.
A kind of described T-shaped high pier Cast-in-place Bent Cap formwork erecting structure, it is characterised in that the intersecting parallels support, rack rod,
Regularization steelframe, I-steel regulating bolt and jack are monoblock type assembling structure.
Described a kind of T-shaped high pier Cast-in-place Bent Cap formwork erecting structure, it is characterised in that the regularization steelframe includes regularization
Steelframe top boom, be fixed on regularization steelframe top boom regularization steelframe lower boom and be arranged on regularization steelframe top boom with
On regularization steelframe montant, regularization steelframe brace between regularization steelframe lower boom, the regularization steelframe top boom
Bolt hole is provided with the position that regularization steelframe lower boom is connected with regularization steelframe top boom.
Described a kind of T-shaped high pier Cast-in-place Bent Cap formwork erecting structure, it is characterised in that the rack rod bottom is provided with vertical rod
Rapid-assembling/disassembling joint, and rack rod is fixedly connected by vertical rod rapid-assembling/disassembling joint with steel plate sash plate.
A kind of described T-shaped high pier Cast-in-place Bent Cap formwork erecting structure, it is characterised in that the prefabricated reinforced concrete backing plate end
Connection sets prefabricated reinforced concrete gutter at portion surrounding position.
1）Foundation construction and draining：Steel plate sash plate is first fixedly installed at the top of cushion cap；By prefabricated reinforced concrete
Backing plate is fixed on cushion cap two ends；Vertical rod rapid-assembling/disassembling head is set at the top of prefabricated reinforced concrete backing plate, in precast reinforced coagulation
Native backing plate surrounding sets prefabricated gutter and precast slab catch pit, and sets water pump to draw water in time, prevents ground water logging
Bubble destruction bracket basis；
2）Support is set up：By intersecting parallels support, rack rod, regularization steelframe, I-steel regulating bolt and jack on ground
Monoblock type assembling is carried out on request, and support is integrally attached on cushion cap after the completion of assembling；It is being layered, is being segmented from centre to both sides
Set up installation bowl fastening type support in longitudinal direction；
3）Model sheetinstallat：Before template branch is taken, to concrete surface cement film, the loose concrete hardened at structure construction seam
And its soft layer carries out picking chisel, new stubble is all dug out, rinses and cleans out, contaminated reinforcing bar is cleaned with water totally；It will process
The regularization template customized（5）It is fixed on the support for setting up completion；
4）Pre-pressing bracket：Strutting system carries out precompressed after the completion of setting up to support, to ensure the stability of support and eliminate support
Inelastic deformation；
5）The reinforcing bar colligation of bent cap and bellows are installed：Rotary ligating cover beam steel is required according to construction drawing and job specfication；With positioning
Bellows is fixed together by reinforcing bar with framework of steel reinforcement；After bellows is installed, bellows position is checked, whether curve shape meets
Design requirement；
6）Lightning protection is installed：Each bridge pier of cushion cap bottom is grounded；Reserved grounding resistance resistance answers≤1 Ω, is used as
Electrical communication bar diameter >=16mm of ground connection；
7）Bent cap concreting：Watering moistening is first carried out before concrete construction in capping beam template, and the live slump is entered
Row detection；Concrete is transported to Coping Construction place by tank car, hopper mode is hung with autocrane concrete is hung into cast-in-place lid
Back end, uses tumbling barrel blanking, stratified continuous pouring；Live slump detection is regularly carried out in work progress, the slump should be tight
Lattice are controlled in 160~200mm；
8）Maintenance：After concrete demoulding, plastic sheeting should be timely used and be wound and cover, should sprinkle water maintenance before covering；
9）Bent cap pre-stress construction：Steel wire；Compile beam, cleaning corrugated conduit, detection concrete strength；Lashing, erector
Make anchor, limiting plate is installed, the supporting installation of jack, installation tool anchor, oil pump is installed；σ con, anchoring, tensioning under initial stress, anchor
Oil cylinder oil return, moveable anchor are released；Moveable anchor, jack, hole path pressure grouting, sealing off and covering anchorage are unloaded successively；
10）Support removing：Support is removed successively according to order from top to bottom.
A kind of construction method of described T-shaped high pier Cast-in-place Bent Cap formwork erecting structure, it is characterised in that the step 2) in bowl
Button support set up order be followed successively by for：Surveying setting-out, vertical rod base and fixation are laid, bar, installing bottom layer cross bar is established, installs
Brace, joint lock, install upper strata vertical rod, tight vertical rod connecting pin, install cross bar, reach design height installation push rod, install top
Support.
A kind of construction method of described T-shaped high pier Cast-in-place Bent Cap formwork erecting structure, it is characterised in that the step 4）Middle branch
Frame precompressed uses piling prepressing, and loading sequence is, longitudinal direction is therefrom carried to two ends branch point symmetry cloth, laterally from structure centre line to two
The symmetrical cloth in side is carried.
The beneficial effects of the invention are as follows：1）Carrying base is used as by the use of existing cushion cap and precast rc slab concrete
Plinth, reduces the work such as the smooth, ground hardening of the cubic metre of earth and stone, save basement process machinery cost, concrete material expense and labour cost,
Shorten the duration.
2）Reduce security risk in work progress.Because being supported on existing suspended deck structure thing, prefabricated reinforced concrete with
Cushion cap is using being fixedly connected, without considering support settlement of foundation.Pre-buried total sub-semigroup connection on precast rc slab
Part, accelerates speed of application.
3）Steel structure support is that, for construction bent cap, the sizing steel structure design of use, globality is preferable so that supporting structure
Security is further lifted；Steel structure support carries out overall assembly and disassembly, and assembling and dissembling process only needs to a small amount of hand fit, is prevented effectively from
Support takes the security risk for tearing process work high above the ground open.
4）Steel structure support peace is torn open using truck crane integral hoisting, dismounting, simple and quick, and it fills, tears open and takes short, week
Rotary speed is fast, can effectively reduce support, device configuration quantity, reduction construction, management cost.
Brief description of the drawings
Fig. 1 is overall structure sectional drawing of the present invention；
Fig. 2 is regularization steelframe drawing of the present invention；
Fig. 3 is that precast concrete base plate of the present invention is connected drawing with cushion cap；
Fig. 4 is Specific construction flow chart of the present invention.
In figure：1- I-steel, 2- Cast-in-place Bent Caps, 3- intersecting parallels support diagonal braces, 4- set shaped steel formworks, 5- regularization steelframes,
6- intersecting parallels supports, 7- bowl fastening type supports, 8- regulating bolts, 9- rack rods, 10- precast rc slab pre-embedded bolts,
11- prefabricated reinforced concrete backing plates, 12- jack, 13- cushion caps, 14- pier studs stake, 15- bridgings, 16- sweeps the floor bar, 17- vertical rods
Rapid-assembling/disassembling joint, 18- prefabricated reinforced concretes gutter, 19- steel plate sash plates, 20- cushion cap built-in fittings, 21- bolts hole,
22- regularization steelframe montants, 23- regularization steelframe top booms, 24- regularization steelframe lower booms, 25- regularization steelframe braces.
Embodiment
Below in conjunction with Figure of description, the invention will be further described.
As Figure 1-4, a kind of T-shaped high pier Cast-in-place Bent Cap formwork erecting structure and construction method, including I-steel 1, cast-in-place lid
Beam 2, intersecting parallels support diagonal brace 3, set shaped steel formwork 4, regularization steelframe 5, intersecting parallels support 6, bowl fastening type support 7, regulating bolt
8th, rack rod 9, precast rc slab pre-embedded bolt 10, prefabricated reinforced concrete backing plate 11, jack 12, cushion cap 13,
Pier stud stake 14, bridging 15, bar 16 of sweeping the floor, vertical rod rapid-assembling/disassembling joint 17, prefabricated reinforced concrete gutter 18, steel plate sash
Plate 19, cushion cap built-in fitting 20, bolt hole 21, regularization steelframe montant 22, regularization steelframe top boom 23, regularization steelframe lower edge
Bar 24 and regularization steelframe brace 25.
Prefabricated reinforced concrete backing plate 11, steel reinforcement cage colligation, welding, built-in fitting set, lifted in embodiment of the present invention
Repeated no more Deng construction technical requirement, emphasis illustrates embodiments of the present invention, below in conjunction with the accompanying drawings and by embodiment to this
Invention is described in further detail, and the explanation is not limited to following examples.
Support cushion cap utilizes original cushion cap 13, and the top of cushion cap 13 sets steel plate sash plate 19, and both sides end plate and cushion cap are pre-buried
Part 20 is fixedly connected with cushion cap 13, and cushion cap built-in fitting 20 is pre-buried when cushion cap 13 is constructed, with the bolt connection of steel plate sash plate 19.Hold
Part basis uses precast concrete base plate 11 beyond platform 13, and when the intensity of cushion cap 13 meets the requirements, precast concrete base plate 11 leads to
Built-in fitting and the bolt connection of cushion cap 13 are crossed, the basic both sides of precast concrete base plate 11 set precast rc slab gutter 18
With precast slab catch pit.
Bowl fastening type support 7 uses φ 48 × 3mm bowl fastening type supports.The template of Cast-in-place Bent Cap 2 uses set shaped steel formwork 4, bowl
The cross bar transfer of button support 7 be 600mm, vertical pole advance from for 600mm, step pitch is 1200mm.Set in frame bottom 300mm
Sweep the floor bar 16, direction across bridge bridging 15 is arranged as 2400mm × 3600mm × 3600mm, be arranged as along bridge to bridging 15
3600mm × 3600 × 3600m, the high bridging 15 of bridge pier is arranged as 2400mm × 3600mm × 3600mm.Added under vertical rod collet
Vertical rod rapid-assembling/disassembling joint 17.
The intersecting parallels support 6 of steel construction is effectively connected using the processing customization of Q235 equal leg angles, and cushion cap 13, frame bottom
Jack 12 is set, and the top of intersecting parallels support 6 is connected by bolt with regularization steelframe 5, and rack rod 9 passes through bolt and well word
Type support 6 and regularization steelframe 5 are connected, and the top of regularization steelframe 5 sets the straining beam of I-steel 1, and lid is collectively constituted with steel pipe support
Beam formwork supporting system.
The bed die and side form panel of set shaped steel formwork 4：5mm steel plates, side form master is stupefied, and ［ 16 channel-section steels, spacing 900mm is secondary to be double
Stupefied is that ［ 10 channel-section steels, spacing 300mm, pull bar is the reinforcing bars of HPB300 φ 30.
The invention mainly comprises following construction procedure：
1）Bracket basis is constructed and draining：The section bottom of steel structure support cushion cap 13 sets steel plate sash plate 19, and both sides end plate is with holding
Platform built-in fitting 20 is fixedly connected, and cushion cap 13 uses prefabricated layers of concrete 11 with outer portion, and it is fast that plate top is respectively provided with vertical rod
Quick-mounting tears first 17 open, and plate week sets prefabricated gutter 18 and catch pit, sets water pump to draw water in time, prevents the surface water from soaking
Destroy bracket basis.
2）Support is set up：Bowl fastening type steel pipe support is layered from centre to both sides, is segmented and longitudinally sets up, and sets up order and is：Survey
Measure unwrapping wire → placement vertical rod base（And it is fixed）→ establish bar → installing bottom layer（First layer）Cross bar → installation brace → nipple pin
Tightly → installation upper strata vertical rod → tight vertical rod connecting pin → installation cross bar → until reaching design height → installation push rod → installation top
Support.
3）Model sheetinstallat：The processing of punching block 4 of shaping is customized, before template branch is taken, to the concrete hardened at structure construction seam
Wash cement film, loose concrete and its soft layer carry out picking chisel, all dig out new stubble, flushing is cleaned out；It is contaminated
Reinforcing bar is cleaned with water totally；The installation of punching block 4 of shaping can be carried out.
4）Pre-pressing bracket：Strutting system carries out precompressed after the completion of setting up to support, to ensure stability and the elimination of support
The inelastic deformation of support, plan uses piling prepressing；Loading sequence：Longitudinal direction is therefrom carried to two ends branch point symmetry cloth, laterally from knot
Structure center line is carried to the symmetrical cloth in both sides.
5）Lid beam steel bar colligation and bellows are installed：Bent cap reinforcing bar is by the unified processing and fabricating of standardization reinforcing bar, and scene is tied up
Prick；Assembling reinforcement should be required in construction in strict accordance with construction drawing and job specfication；Splice sleeve connection；Bellows is installed
When, it is necessary to bellows is fixed together with framework of steel reinforcement with spacer bar, bellows floats and drawn during to prevent casting concrete
Play serious quality accident；Bellows should try one's best during installing in place and avoid alternating bending, be ftractureed to prevent tube wall, meanwhile, also
Prevent electric welding spark burn tube wall；After bellows is installed, bellows position is checked, whether curve shape meets design requirement；
When bellows and regular reinforcement are clashed, it is allowed to which reinforcing bar is carried out into local directed complete set, longitudinal prestressing reinforcing bar pipeline position is kept
Put motionless.
6）Lightning protection is installed：Each bridge pier all should reliable ground, reserve grounding resistance resistance and answer≤1 Ω.As ground connection
Electrical communication reinforcing bar, its diameter is no less than 16mm.
7）Bent cap concreting：Concrete is transported to Coping Construction place by tank car, and hopper mode is hung with autocrane
Concrete is hung to bent cap top, tumbling barrel blanking is used.Placement layer by layer is wanted in concreting, first in bent cap mould before concrete construction
Watering moistening is carried out in plate, but must not make have ponding in template.Scene all should be regularly carried out before concrete construction, in work progress
The slump detects that the slump should be strict controlled in 160~200mm；Concrete answers continuous placing.
8）Maintenance：After concrete demoulding, plastic sheeting should be timely used and be wound and cover, should sprinkled water before covering foster
Shield.Must assure that during maintenance in film has substantial amounts of condensate to condense on film；Curing time of sprinkling water must not be less than 14 days.
9）Pre-stress construction：Bent cap prestressed construction technology flow, steel wire compiles beam, cleaning corrugated conduit, detection
Concrete strength → lashing → installment work anchor → installation limiting plate → installation jack → supporting the peace of installation tool anchor → oil pump
Dress → initial stress（Draw and measure stretch value mark）σ con under → anchor（Hold lotus minute）→ anchoring → tensioning oil cylinder oil return, moveable anchor pine
Moveable anchor, jack → hole path pressure grouting → sealing off and covering anchorage take off → are unloaded successively.
10）Support removing：Support removing order be, safety net → guard rail → bridging → pin handsheet → leger →
Small cross bar → vertical rod, is removed from top to bottom, and a step one is clear, must not be removed, be forbidden upper and lower while operation using stepping type.
Claims (10)
1. a kind of T-shaped high pier Cast-in-place Bent Cap formwork erecting structure, including cushion cap（13）, it is characterised in that the cushion cap（13）Top is consolidated
Steel plate sash plate is set surely（19）, it is respectively fixedly connected with provided with prefabricated reinforced concrete backing plate at end positions（11）, the steel
Sheet frame panel（19）Top is provided with intersecting parallels support（6）, the intersecting parallels support（6）With cushion cap（13）Between be provided be used for adjust
The jack of absolute altitude（12）, the intersecting parallels support（6）Top is provided with set shaped steel formwork（4）, the set shaped steel formwork（4）Upper berth
If Cast-in-place Bent Cap（2）；The intersecting parallels support（6）Two ends connection sets rack rod（9）, the intersecting parallels support（6）Top
Portion and rack rod（9）Top between be provided with regularization steelframe（5）, and regularization steelframe（5）Respectively with intersecting parallels support（6）
And rack rod（9）It is fixedly connected, the regularization steelframe（5）With set shaped steel formwork（4）Between be provided with I-steel（1）；It is described
Prefabricated reinforced concrete backing plate（11）Top be provided with bowl fastening type support（7）, the bowl fastening type support（7）One end with it is precast reinforced
Layers of concrete（11）It is fixedly connected, the other end is supported on regularization steelframe（5）Bottom.
2. the T-shaped high pier Cast-in-place Bent Cap formwork erecting structure of one kind according to claim 1, it is characterised in that the intersecting parallels branch
Frame（6）Intersecting parallels support diagonal brace is provided with inner upper end position（3）, bottom, which is provided with, at lower end position is used for intersecting parallels support diagonal brace
（3）Support the regulating bolt of regulation（8）.
3. the T-shaped high pier Cast-in-place Bent Cap formwork erecting structure of one kind according to claim 1, it is characterised in that the bowl fastening type branch
Frame（7）Centre position is provided with bridging（15）, lower end position is provided with bar of sweeping the floor（16）.
4. the T-shaped high pier Cast-in-place Bent Cap formwork erecting structure of one kind according to claim 1 or 2, it is characterised in that the intersecting parallels
Support（6）, rack rod（9）, regularization steelframe（5）, I-steel（1）Regulating bolt（8）And jack（12）Filled for monoblock type
Distribution structure.
5. the T-shaped high pier Cast-in-place Bent Cap formwork erecting structure of one kind according to claim 1, it is characterised in that the regularization steel
Frame（5）Including regularization steelframe top boom（23）, be fixed on regularization steelframe top boom（23）Upper regularization steelframe lower boom
（24）And it is arranged on regularization steelframe top boom（23）With regularization steelframe lower boom（24）Between regularization steelframe montant
（22）, regularization steelframe brace（25）, the regularization steelframe top boom（23）On close to regularization steelframe lower boom（24）
With regularization steelframe top boom（23）Bolt hole is provided with the position of connection（21）.
6. the T-shaped high pier Cast-in-place Bent Cap formwork erecting structure of one kind according to claim 1, it is characterised in that the rack rod
（9）Bottom is provided with vertical rod rapid-assembling/disassembling joint（17）, and rack rod（9）Pass through vertical rod rapid-assembling/disassembling joint（17）With steel plate frame
Panel（19）It is fixedly connected.
7. the T-shaped high pier Cast-in-place Bent Cap formwork erecting structure of one kind according to claim 1, it is characterised in that described precast reinforced
Layers of concrete（11）Connection sets prefabricated reinforced concrete gutter at the surrounding position of end（18）.
8. a kind of construction method of T-shaped high pier Cast-in-place Bent Cap formwork erecting structure according to claim 1-7, it is characterised in that bag
Include following steps：
1）Foundation construction and draining：First in cushion cap（13）Top steel plate sash plate is fixedly installed（19）；Precast reinforced it will mix
Solidifying soil backing plate（11）It is fixed on cushion cap（13）Two ends；In prefabricated reinforced concrete backing plate（11）Top sets vertical rod rapid-assembling/disassembling head
（17）, in prefabricated reinforced concrete backing plate（11）Surrounding sets prefabricated gutter（18）With precast slab catch pit, and set
Put water pump to draw water in time, prevent surface water immersion destruction bracket basis；
2）Support is set up：By intersecting parallels support（6）, rack rod（9）, regularization steelframe（5）, I-steel（1）Regulating bolt（8）
And jack（12）Monoblock type assembling is carried out on request on ground, and support is integrally attached to cushion cap after the completion of assembling（13）On；
Installation bowl fastening type support is set up being layered from centre to both sides, being segmented longitudinal direction（7）；
3）Model sheetinstallat：Before template branch is taken, to concrete surface cement film, the loose concrete hardened at structure construction seam
And its soft layer carries out picking chisel, new stubble is all dug out, rinses and cleans out, contaminated reinforcing bar is cleaned with water totally；It will process
The regularization template customized（5）It is fixed on the support for setting up completion；
4）Pre-pressing bracket：Strutting system carries out precompressed after the completion of setting up to support, to ensure the stability of support and eliminate support
Inelastic deformation；
5）The reinforcing bar colligation of bent cap and bellows are installed：Rotary ligating cover beam steel is required according to construction drawing and job specfication；With positioning
Bellows is fixed together by reinforcing bar with framework of steel reinforcement；After bellows is installed, bellows position is checked, whether curve shape meets
Design requirement；
6）Lightning protection is installed：To cushion cap（13）Each bridge pier of bottom is grounded；Reserved grounding resistance resistance answers≤1 Ω,
Electrical communication bar diameter >=16mm as ground connection；
7）Bent cap concreting：Watering moistening is first carried out before concrete construction in capping beam template, and the live slump is entered
Row detection；Concrete is transported to Coping Construction place by tank car, hopper mode is hung with autocrane concrete is hung into cast-in-place lid
Beam（2）Top, uses tumbling barrel blanking, stratified continuous pouring；Live slump detection is regularly carried out in work progress, the slump should
It is strict controlled in 160~200mm；
8）Maintenance：After concrete demoulding, plastic sheeting should be timely used and be wound and cover, should sprinkle water maintenance before covering；
9）Bent cap pre-stress construction：Steel wire；Compile beam, cleaning corrugated conduit, detection concrete strength；Lashing, erector
Make anchor, limiting plate is installed, the supporting installation of jack, installation tool anchor, oil pump is installed；σ con, anchoring, tensioning under initial stress, anchor
Oil cylinder oil return, moveable anchor are released；Moveable anchor, jack, hole path pressure grouting, sealing off and covering anchorage are unloaded successively；
10）Support removing：Support is removed successively according to order from top to bottom.
9. a kind of construction method of T-shaped high pier Cast-in-place Bent Cap formwork erecting structure according to claim 8, it is characterised in that institute
State step 2) in bowl fastening type support（7）Set up order be followed successively by for：Surveying setting-out, lay vertical rod base and fixation, establish bar, peace
Dress bottom cross bar, installation brace, joint lock, install upper strata vertical rod, tight vertical rod connecting pin, install cross bar, reach design height
Push rod is installed, installs and shores.
10. a kind of construction method of T-shaped high pier Cast-in-place Bent Cap formwork erecting structure according to claim 8, it is characterised in that institute
State step 4）Medium-height trestle precompressed uses piling prepressing, and loading sequence is that longitudinal direction is therefrom carried to two ends branch point symmetry cloth, laterally from knot
Structure center line is carried to the symmetrical cloth in both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710487857.4A CN107100083A (en) | 2017-06-23 | 2017-06-23 | A kind of T-shaped high pier Cast-in-place Bent Cap formwork erecting structure and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710487857.4A CN107100083A (en) | 2017-06-23 | 2017-06-23 | A kind of T-shaped high pier Cast-in-place Bent Cap formwork erecting structure and construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107100083A true CN107100083A (en) | 2017-08-29 |
Family
ID=59663435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710487857.4A Withdrawn CN107100083A (en) | 2017-06-23 | 2017-06-23 | A kind of T-shaped high pier Cast-in-place Bent Cap formwork erecting structure and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107100083A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109278162A (en) * | 2018-11-06 | 2019-01-29 | 湖南中铁五新钢模有限责任公司 | A kind of polystyle preform lid beam bottom modular system and its application method |
| CN109958067A (en) * | 2019-05-05 | 2019-07-02 | 中交一公局第三工程有限公司 | Construction bracket apparatus and system |
| CN110883914A (en) * | 2019-10-12 | 2020-03-17 | 安徽省路港工程有限责任公司 | Prefabricated concrete pi-shaped beam formwork system and construction method thereof |
| CN111139744A (en) * | 2019-12-27 | 2020-05-12 | 中冶天工集团有限公司 | Bridge engineering large-section bent cap bottom reinforcement binding formwork erecting process |
| CN111893892A (en) * | 2020-07-27 | 2020-11-06 | 中交路桥建设有限公司 | Bracket mounting method for box girder construction |
-
2017
- 2017-06-23 CN CN201710487857.4A patent/CN107100083A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109278162A (en) * | 2018-11-06 | 2019-01-29 | 湖南中铁五新钢模有限责任公司 | A kind of polystyle preform lid beam bottom modular system and its application method |
| CN109278162B (en) * | 2018-11-06 | 2023-08-15 | 湖南五新智能科技股份有限公司 | Multi-column prefabricated bent cap bottom die system and application method thereof |
| CN109958067A (en) * | 2019-05-05 | 2019-07-02 | 中交一公局第三工程有限公司 | Construction bracket apparatus and system |
| CN110883914A (en) * | 2019-10-12 | 2020-03-17 | 安徽省路港工程有限责任公司 | Prefabricated concrete pi-shaped beam formwork system and construction method thereof |
| CN111139744A (en) * | 2019-12-27 | 2020-05-12 | 中冶天工集团有限公司 | Bridge engineering large-section bent cap bottom reinforcement binding formwork erecting process |
| CN111893892A (en) * | 2020-07-27 | 2020-11-06 | 中交路桥建设有限公司 | Bracket mounting method for box girder construction |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106223360B (en) | Using the open cut cast in place and precast construction subway station construction method of stake supporting system | |
| CN107100083A (en) | A kind of T-shaped high pier Cast-in-place Bent Cap formwork erecting structure and construction method | |
| CN106758841B (en) | A kind of whole construction process of the double rope face low-pylon cable-stayed bridges of double tower | |
| CN102031784B (en) | Slope protection pile pouring and cable bolting construction method for deep foundation pit | |
| CN106702910A (en) | Main girder construction process for extradosed cable-stayed bridge with double towers and double cable planes | |
| CN112982181B (en) | Construction method for steel-concrete combined section of through-type steel box continuous arch bridge | |
| CN107905114B (en) | A kind of construction method of large span Successive interference cancellation | |
| CN109235499A (en) | A kind of open cut hypogee Standard formula construction method | |
| CN110387822B (en) | Cast-in-situ bent cap assembly type steel pipe support and construction method thereof | |
| CN109706846B (en) | High and narrow bridge capping beam through steel bar construction method for slope foundation | |
| CN107574762A (en) | A kind of construction method for strengthening Cast-in-situ Beam 0# block construction qualities | |
| CN209703525U (en) | A kind of side slope precast assembly lattice girder connected by wet seam | |
| CN112211113A (en) | Cast-in-place construction method for large-span diamond-shaped bent cap of high pier | |
| CN111535198B (en) | Bailey truss support construction method of cast-in-place box girder traffic bridge | |
| CN106869548A (en) | A kind of newel framework assembled underground parking structural system and construction method | |
| CN108842624A (en) | High pier Cast-in-place Bent Cap combined type overhanging formwork system and construction method | |
| CN112554077A (en) | Steel pipe concrete assembled truss composite beam construction system and construction method | |
| CN112554067A (en) | Method for constructing bracket-free tied arch by means of arch first and beam second | |
| CN104532754A (en) | Prestress concrete box girder end sealing formwork construction method | |
| CN106436591A (en) | Steel cantilever combined bridge deck slab widening and reconstruction structure and construction method thereof | |
| US4403460A (en) | Method of erecting an elevated tank using formwork | |
| CN207109593U (en) | A kind of T-shaped high pier Cast-in-place Bent Cap formwork erecting structure | |
| CN110106915A (en) | One kind exempts from that support is inverse to make underground engineering construction method and underground construction structure | |
| CN108589769A (en) | A kind of embedding rock T shapes combined type column plate high gear wall construction method of overlength | |
| CN112609584A (en) | Prefabricated small box girder installation construction method for intelligent express way |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170829 |