A kind of T-shaped high pier Cast-in-place Bent Cap formwork erecting structure
It the utility model is related 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.
The important way of science of bridge building modern construction road traffic system, viaduct, light rail viaduct in 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, included 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 limits, 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 the shortcomings that obvious be present in condition, conventional hoop bracket method：1. manually being 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 need substantial amounts of high-altitude lifting job and mechanical one-shift, security threat
It is more.So it there is also some problems urgently technological improvement in the construction of reality.
Utility model content
In order to solve problems of the prior art, the utility model provides a kind of T-shaped high pier rational in infrastructure and showed
Pour bent cap formwork erecting structure.
The technical solution of the utility model 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 be fixedly installed at the top of the cushion cap
Steel plate sash plate, it is respectively fixedly connected with end positions provided with prefabricated reinforced concrete backing plate, is set above the steel plate sash plate
There is intersecting parallels support, the jack for adjusting elevation, the intersecting parallels support are provided between the intersecting parallels support and cushion cap
Top is provided with set shaped steel formwork, and Cast-in-place Bent Cap is laid on the set shaped steel formwork；The intersecting parallels support both ends connection sets branch
Bar is erected, regularization steelframe, and regularization steelframe point are provided between the top of the intersecting parallels support and the top of rack rod
It is not fixedly connected with intersecting parallels support and rack rod, I-steel is provided between the regularization steelframe and set shaped steel formwork；Institute
The top for stating prefabricated reinforced concrete backing plate is provided with bowl fastening type support, described bowl fastening type support one end and prefabricated reinforced concrete pad
Plate is fixedly connected, and 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
Put place and be provided with intersecting parallels support diagonal brace, bottom is provided with the regulation spiral shell for being used for the support regulation of intersecting parallels support diagonal brace at lower end position
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 installs
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
Regularization steelframe montant, regularization steelframe brace between regularization steelframe lower boom, on the regularization steelframe top boom
The opening position being connected close to regularization steelframe lower boom with regularization steelframe top boom is provided with bolt hole.
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
Portion's surrounding opening position connection sets prefabricated reinforced concrete gutter.
The beneficial effects of the utility model are：1）Carrying is used as by the use of existing cushion cap and precast rc slab concrete
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 takes and artificial
Take, 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, accelerate speed of application.
3）Steel structure support is preferable for bent cap of constructing, the sizing steel structure design of use, globality so that supporting structure
Security is further lifted；Steel structure support carries out overall assembly and disassembly, and assembling and dissembling process only needs a small amount of hand fit, effectively avoided
Support takes the security risk for tearing process work high above the ground open.
4）Steel structure support peace tears open using truck crane integral hoisting, dismounting, it is simple and quick, its fill, tear open take it is short, week
Rotary speed is fast, can effectively reduce support, device configuration quantity, reduces construction, management cost.
Brief description of the drawings
Fig. 1 is the utility model overall structure sectional drawing；
Fig. 2 is the utility model regularization steelframe drawing；
Fig. 3 is that the utility model precast concrete base plate is connected drawing with cushion cap；
Fig. 4 is the utility model Specific construction flow chart.
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 stud stakes, 15- bridgings, 16- sweep 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.
Below in conjunction with Figure of description, the utility model is described in further detail.
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 in the utility model embodiment, steel reinforcement cage colligation, welding, built-in fitting set,
The construction technical requirements such as lifting repeat no more, and emphasis illustrates embodiment of the present utility model, below in conjunction with the accompanying drawings and pass through reality
Apply example to be described in further detail the utility model, 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 is logical
Built-in fitting and the bolt connection of cushion cap 13 are crossed, 11 basic both sides of precast concrete base plate 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 is 600mm, vertical pole advance is from for 600mm, step pitch 1200mm.Set in frame bottom 300mm
Sweep the floor bar 16, direction across bridge bridging 15 is arranged as 2400mm × 3600mm × 3600mm, is arranged as along bridge to bridging 15
3600mm × 3600 × 3600m, the high bridging 15 of bridge pier are 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 using the processing customization of Q235 equal leg angles, and cushion cap 13 effectively connects, 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 are secondary to be double
Stupefied is that ［ 10 channel-section steels, spacing 300mm, pull bar are the reinforcing bars of HPB300 φ 30.
Construction procedure is as follows：
1）Bracket basis is constructed and draining：The section bottom of steel structure support cushion cap 13 sets steel plate sash plate 19, both sides end plate
It is fixedly connected with cushion cap built-in fitting 20, cushion cap 13 uses prefabricated layers of concrete 11 with outer portion, and plate top is respectively provided with vertical
Bar rapid-assembling/disassembling first 17, plate week set prefabricated gutter 18 and catch pit, set water pump to draw water in time, prevent the surface water
Immersion destroys 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（It is and 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
3）Model sheetinstallat：The processing of punching block 4 of shaping customizes, before template branch is taken, to the concrete hardened at structure construction seam
Wash cement film, loose concrete and its soft layer are carried out picking chisel, all dig out new stubble, and 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 the stability of support and elimination
The inelastic deformation of support, plan use piling prepressing；Loading sequence：Longitudinal direction therefrom carries to both ends branch point symmetry cloth, laterally from knot
Structure center line carries to the symmetrical cloth in both sides.
5）Lid beam steel bar colligation and bellows installation：Bent cap reinforcing bar unifies processing and fabricating by standardization reinforcing bar field, 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 and framework of steel reinforcement are fixed together with spacer bar, to prevent bellows during casting concrete floats and draws
Play serious quality accident；It should be tried one's best during bellows installation is in place and avoid alternating bending, ftractureed to prevent tube wall, meanwhile, also
Prevent electric welding spark burn tube wall；After bellows installation, bellows position is checked, whether curve shape meets design requirement；
When bellows and regular reinforcement clash, it is allowed to reinforcing bar is carried out into local directed complete set, keeps longitudinal prestressing reinforcing bar pipeline position
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, uses tumbling barrel blanking.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.Before concrete construction, scene all should be regularly carried out in work progress
The slump detects, and 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, compile beam, cleaning corrugated conduit, inspection
It is supporting to survey concrete strength → lashing → installment work anchor → installation limiting plate → installation jack → installation tool anchor → oil pump
Installation → initial stress（Draw and measure stretch value mark）σ con under → anchor（Hold lotus minute）→ anchoring → tensioning oil cylinder oil return, moveable anchor
Release → unload successively moveable anchor, jack → hole path pressure grouting → sealing off and covering anchorage.
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, stepping type must not be used to remove, be forbidden upper and lower while operation.