CN207987786U - No. 0 block bracket prepressing structure of continuous beam bridge pier in water - Google Patents

No. 0 block bracket prepressing structure of continuous beam bridge pier in water Download PDF

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Publication number
CN207987786U
CN207987786U CN201820269440.0U CN201820269440U CN207987786U CN 207987786 U CN207987786 U CN 207987786U CN 201820269440 U CN201820269440 U CN 201820269440U CN 207987786 U CN207987786 U CN 207987786U
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China
Prior art keywords
anchor point
cushion cap
steel
bracket
bridge pier
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CN201820269440.0U
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Chinese (zh)
Inventor
王安文
吴曼
杨胜楠
来历
马西尧
颜宪英
张昆锋
王栋
王振佳
赵鹏
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Road and Bridge International Co Ltd
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Road and Bridge International Co Ltd
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Abstract

No. 0 block bracket prepressing structure of continuous beam bridge pier in a kind of water of the utility model offer, continuous bridge pier bottom portion is cushion cap, steel cofferdam is equipped with around cushion cap, continuous bridge socle is equipped with bracket, the bracket includes pier outrigger and pier intermediate bracket, multiple upper anchor points are equipped on the pier outrigger and pier intermediate bracket, each upper anchor point is equipped with a pushing tow jack;Multiple cushion cap anchor points with upper anchor point face respectively are equipped on the cushion cap, multiple steel cofferdam anchor points with upper anchor point face respectively are equipped at the top of the side plate of the steel cofferdam, each upper anchor point is connect with the cushion cap anchor point or steel cofferdam anchor point of face below by steel strand wires respectively, the lower end of the steel strand wires is anchored with cushion cap anchor point or steel cofferdam anchor point, and upper end is anchored with upper anchor point.

Description

No. 0 block bracket prepressing structure of continuous beam bridge pier in water
Technical field
The utility model belongs to technical field of bridge construction, and in particular to the precompressed knot of No. 0 block bracket of bridge pier in a kind of water Structure.
Background technology
No. 0 block of continuous beam bridge pier is the basis of bridge top later stage cantilever construction, itself is cast-in-place by mass concrete It forms, top is equipped with the bracket of concrete load when for bearing later stage cantilever construction.The bearing capacity of bracket is most important, Therefore after in bracket, installation is complete, it is necessary to carry out precompressed to bracket, eliminate the inelastic deformation of bracket itself, while measuring same Flexible deformation situation under equal load actions, by a series of tests before construction, the further rigidity examined and verify bracket, Intensity and overall stability.
The common precompressed mode of No. 0 block bracket of continuous bridge has sandbag piling prepressing, concrete block piling prepressing, reinforcing bar heap Carry precompressed, water tank piling prepressing etc..Piling prepressing needs to carry a large amount of prepressing materials on bracket, especially when bridge pier is in water When, prepressing materials also need to repeatedly have bad luck by ship, and tedious process, time and effort consuming seriously affects construction speed.
Invention content
The purpose of this utility model is to be directed to above-mentioned the asking of No. 0 block bracket precompressed construction of continuous beam bridge pier in current water Topic proposes a kind of combination site specific, reasonable for structure, the stronger bracket prepressing structure of economy.
When continuous beam bridge pier is in water, cushion cap is constructed using steel cofferdam, and steel cofferdam is as water-retaining structure until bridge is complete Portion is just removed at the end of constructing, therefore the applicant expects using steel cofferdam structure and the cushion cap constructed as precompression Source, setting No. 0 block bracket of reaction frame pair carry out precompressed, and the method can make full use of existing constructing structure, without carrying A large amount of prepressing materials.
The technical solution of the utility model is as follows:
No. 0 block bracket prepressing structure of continuous beam bridge pier in a kind of water, continuous bridge pier bottom portion are cushion cap, around cushion cap Equipped with steel cofferdam, continuous bridge socle is equipped with bracket, and the bracket includes pier outrigger and pier intermediate bracket, and feature exists In:Multiple upper anchor points are equipped on the pier outrigger and pier intermediate bracket, each upper anchor point is equipped with a pushing tow jack; It is equipped with multiple cushion cap anchor points with upper anchor point face respectively on the cushion cap, is equipped at the top of the side plate of the steel cofferdam multiple Respectively with the steel cofferdam anchor point of upper anchor point face, each above anchor point is enclosed with the cushion cap anchor point or steel of face below respectively Weir anchor point is connected by steel strand wires, and lower end and the cushion cap anchor point or steel cofferdam anchor point of the steel strand wires anchor, upper end and upper anchor point Anchoring.
In above-mentioned bracket prepressing structure, the upper anchor point includes the distribution beam for being horizontally set on pallet top, in distribution beam It is horizontally disposed to there is the bearing beam vertical with distribution beam, the pushing tow jack to be arranged on bearing beam, set anchor at the top of pushing tow jack Back-pressure beam is put, anchor point anchorage is set on upper anchor point back-pressure beam;The upper end of the steel strand wires passes through the back-pressure beam and the upper anchor Point anchorage anchoring.
In above-mentioned bracket prepressing structure, each cushion cap anchor point includes more vertically arranged dowels, the lower end of every dowel Go deep into anchoring in cushion cap and with the lower anchor slab being embedded in cushion cap concrete, upper end protrudes from cushion cap top surface, sets in cushion cap top surface It sets there are two cushion block, shoulder pole girder is horizontally disposed on cushion block, cushion cap anchor point back-pressure beam is set on shoulder pole girder;The upper end of the dowel passes through The cushion cap anchor point back-pressure beam, and be arranged cushion cap anchor point back-pressure back portion upper anchor slab anchoring;With the anchoring of cushion cap anchor point The lower end of steel strand wires passes through the shoulder pole girder, and is anchored with the cushion cap anchor point anchorage of setting shoulder pole soffit.
In above-mentioned bracket prepressing structure, the steel cofferdam anchor point includes the horizontal load-bearing being welded at the top of steel cofferdam side plate Beam, with steel cofferdam anchor point anchoring steel strand wires lower end pass through the spandrel girder, and with the steel cofferdam in load-bearing soffit is set Anchor point anchorage anchors.
In water provided by the utility model No. 0 block bracket prepressing structure of continuous beam bridge pier be using the cushion cap constructed and Steel cofferdam carries out precompressed by reaction frame structure, compares traditional piling prepressing, can reduce material as bracket precompressed stress basis The processes such as material allocation and transportation, shorten the construction time, and for multi-span continuous bridge, reaction frame structure is reusable, cost-effective, for Be conducive to construction speed in the case of bridge pier construction site is limited in water.
Description of the drawings
Fig. 1 is the overall structure diagram of the utility model;
Fig. 2 is the upper anchor point structural schematic diagram being arranged on bracket;
Fig. 3 is provided in the cushion cap anchor point structural schematic diagram on cushion cap;
Fig. 4 is provided in the steel cofferdam anchor point structural schematic diagram on steel cofferdam.
Specific implementation mode
As shown in Figure 1, No. 0 block bracket prepressing structure of continuous beam bridge pier in a kind of water provided by the utility model, continuously 1 bottom of beam bridge pier is cushion cap 2, and steel cofferdam 3 is equipped with around cushion cap 2, and continuous bridge socle is equipped with bracket, and the bracket includes pier Outrigger 4 and pier intermediate bracket 5;Multiple upper anchor points 6, Mei Geshang are equipped on the pier outrigger 4 and pier intermediate bracket 5 Anchor point 5 is equipped with a pushing tow jack;Multiple cushion cap anchor points 7 with upper anchor point face respectively are equipped on the cushion cap 2, in institute State and be equipped with multiple steel cofferdam anchor points 8 with upper anchor point face respectively at the top of the side plate of steel cofferdam 3, each upper anchor point 6 respectively with A cushion cap anchor point 7 or steel cofferdam anchor point 8 for face is connected by steel strand wires 9 below, the lower end of the steel strand wires 9 and cushion cap Anchor point 7 or steel cofferdam anchor point 8 anchor, and upper end is anchored with upper anchor point 6.
As shown in Fig. 2, the upper anchor point 6 includes the distribution for being horizontally set on 5 top of pier outrigger 4 or pier intermediate bracket Beam 61, being horizontally disposed in distribution beam 61 has the bearing beam 62 vertical with distribution beam, and the pushing tow very heavy 63 is arranged on bearing beam, pushing tow 63 top of jack sets anchor point back-pressure beam 64, and anchor point anchorage 65 is set on upper anchor point back-pressure beam 64;The upper end of the steel strand wires 9 It is anchored across the back-pressure beam 64 and the upper anchor point anchorage 65.
The utility model is when it is implemented, double limbs can be used in the distribution beam 61, bearing beam 62, upper anchor point back-pressure beam 64 HN45 shaped steel;Lower bolster 66 is welded in upper 64 bottom surface of anchor point back-pressure beam, is convenient for 63 upward pushing tow of pushing tow jack;In upper anchor Upper padding plate 67 is welded in 64 top surface of point back-pressure beam, is easily installed fixed upper anchor point anchorage 65;The upper anchor point anchorage 65 uses YJM types Anchorage.
For ease of the height of upper anchor point, also wedge type cushion block 68 can be set between 61 both ends bottom of the distribution beam and bracket.
As shown in figure 3, each cushion cap anchor point 7 includes more vertically arranged dowels 71, the lower end of every dowel 71 is goed deep into It is anchored in cushion cap 2 and with the lower anchor slab 72 being embedded in cushion cap concrete, upper end protrudes from 2 top surface of cushion cap, set in 2 top surface of cushion cap It sets there are two cushion block 73, shoulder pole girder 74 is horizontally disposed on cushion block 73, cushion cap anchor point back-pressure beam 75 is set on shoulder pole girder 74;The dowel 71 upper end passes through the cushion cap anchor point back-pressure beam 75, and with 76 anchor of upper anchor slab at the top of cushion cap anchor point back-pressure beam 75 is set Gu;Pass through the shoulder pole girder 74 with the lower end of the steel strand wires 9 of cushion cap anchor point anchoring, and with the cushion cap anchor of setting shoulder pole girder 74 bottom surface Point anchorage 77 anchors.
To reinforce the firmness of dowel, the steel of pre-buried multiple-layer horizontal setting within the scope of dowel can be set in cushion cap concrete Muscle net 78, to this part, concrete is reinforced.Every layer of bar-mat reinforcement 78 includes that more 16 plain bars of Φ are arranged in length and breadth.
To keep the position of dowel to fix, can also determine pre-buried horizontally disposed dowel at the top of cushion cap reinforcement in concrete net Position plate 79, location hole is set on dowel positioning plate 79, and every dowel 71 passes through the location hole on one dowel positioning plate.
As shown in figure 4, the steel cofferdam anchor point 8 includes the spandrel girder 81 that level is welded at the top of 3 side plate of steel cofferdam, with steel The lower end of the steel strand wires 9 of cofferdam anchor point anchoring passes through the spandrel girder 81, and with the steel cofferdam anchor point in load-bearing soffit is set Anchorage 82 anchors.
When it is implemented, double limb I28 work steel can be used in the spandrel girder, steel cofferdam anchor point anchorage 82 is set on spandrel girder Spandrel girder stiffener 83 is respectively welded in place both sides, and spandrel girder stiffener 83 uses 10mm steel plates.
For reinforce spandrel girder firmness, can between 81 both ends of the spandrel girder and steel cofferdam side plate stiffener 84; Two braces 85 are welded between 3 top annular plate of the spandrel girder 81 and steel cofferdam.
The utility model by the upper anchor point 6 that is located on bracket respectively on the cushion cap anchor point 7 and steel cofferdam that are located on cushion cap Steel cofferdam anchor point 8 connected by steel strand wires 9, formed reaction frame.Pushing tow jack 63 passes through anchor point back-pressure beam on upward pushing tow 64, steel strand wires 9 are stretched, so that bracket stress is carried out precompressed by counter-force.When Specific construction, jack can be by bracket institute bearing load Weight phase in loads, and observes the deformation of bracket observation point using spirit level during implementing precompressed load, Precompressed is carried out simultaneously and measures record, and itself and calculated value are compared, analysis and summary, finally show that the load of bracket is held Pressure situation makes it meet structure stress requirement when 0# block concretes pour.

Claims (10)

1. No. 0 block bracket prepressing structure of continuous beam bridge pier in a kind of water, continuous bridge pier bottom portion is cushion cap, is set around cushion cap There are steel cofferdam, continuous bridge socle to be equipped with bracket, the bracket includes pier outrigger and pier intermediate bracket, and feature exists In:Multiple upper anchor points are equipped on the pier outrigger and pier intermediate bracket, each upper anchor point is equipped with a pushing tow jack; It is equipped with multiple cushion cap anchor points with upper anchor point face respectively on the cushion cap, is equipped at the top of the side plate of the steel cofferdam multiple Respectively with the steel cofferdam anchor point of upper anchor point face, each above anchor point is enclosed with the cushion cap anchor point or steel of face below respectively Weir anchor point is connected by steel strand wires, and lower end and the cushion cap anchor point or steel cofferdam anchor point of the steel strand wires anchor, upper end and upper anchor point Anchoring.
2. No. 0 block bracket prepressing structure of continuous beam bridge pier in water according to claim 1, it is characterised in that:The upper anchor Point includes the distribution beam for being horizontally set on pallet top, and being horizontally disposed in distribution beam has the bearing beam vertical with distribution beam, the top It pushes away jack to be arranged on bearing beam, sets anchor point back-pressure beam at the top of pushing tow jack, anchor point anchorage is set on upper anchor point back-pressure beam; The upper end of the steel strand wires passes through the back-pressure beam to be anchored with the upper anchor point anchorage.
3. No. 0 block bracket prepressing structure of continuous beam bridge pier in water according to claim 2, it is characterised in that:The distribution Beam, bearing beam, upper anchor point back-pressure beam are all made of double limb HN45 shaped steel;The upper anchor point back-pressure soffit and top surface are respectively welded down Backing plate and upper padding plate;The upper anchor point anchorage uses YJM type anchorages.
4. No. 0 block bracket prepressing structure of continuous beam bridge pier in water according to claim 2, it is characterised in that:The distribution Wedge type cushion block is additionally provided between beam both ends bottom and bracket.
5. No. 0 block bracket prepressing structure of continuous beam bridge pier in water according to claim 1, it is characterised in that:Each cushion cap Anchor point includes more vertically arranged dowels, the lower end of every dowel go deep into cushion cap and be embedded in cushion cap concrete under Anchor slab anchors, and upper end protrudes from cushion cap top surface, and in cushion cap top surface, setting is horizontally disposed with shoulder pole girder there are two cushion block on cushion block, flat Cushion cap anchor point back-pressure beam is set on spreader beam;The upper end of the dowel passes through the cushion cap anchor point back-pressure beam, and with setting in cushion cap anchor The upper anchor slab anchoring in point back-pressure back portion;With cushion cap anchor point anchoring steel strand wires lower end pass through the shoulder pole girder, and with setting The cushion cap anchor point anchorage of shoulder pole soffit anchors.
6. No. 0 block bracket prepressing structure of continuous beam bridge pier in water according to claim 5, it is characterised in that:It is mixed in cushion cap The bar-mat reinforcement of multiple-layer horizontal setting is embedded in solidifying soil within the scope of setting dowel, every layer of bar-mat reinforcement includes that more Φ 16 are arranged in length and breadth Plain bar.
7. No. 0 block bracket prepressing structure of continuous beam bridge pier in water according to claim 6, it is characterised in that:It is mixed in cushion cap Horizontally disposed dowel positioning plate is embedded in solidifying soil at the top of bar-mat reinforcement, every dowel passes through the dowel positioning plate.
8. No. 0 block bracket prepressing structure of continuous beam bridge pier in water according to claim 1, it is characterised in that:The steel encloses Weir anchor point includes the horizontal spandrel girder being welded at the top of steel cofferdam side plate, is passed through with the lower end of the steel strand wires of steel cofferdam anchor point anchoring The spandrel girder, and be arranged load-bearing soffit steel cofferdam anchor point anchorage anchoring.
9. No. 0 block bracket prepressing structure of continuous beam bridge pier in water according to claim 8, it is characterised in that:The load-bearing Beam both sides at steel cofferdam anchor point anchorage is arranged on spandrel girder, spandrel girder stiffener, load-bearing is respectively welded using double limb I28 work steel Beam stiffener uses 10mm steel plates.
10. No. 0 block bracket prepressing structure of continuous beam bridge pier in water according to claim 8, it is characterised in that:The load-bearing Stiffener between beam both ends and steel cofferdam side plate;Two braces are welded between the spandrel girder and steel cofferdam top annular plate.
CN201820269440.0U 2018-02-24 2018-02-24 No. 0 block bracket prepressing structure of continuous beam bridge pier in water Active CN207987786U (en)

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Application Number Priority Date Filing Date Title
CN201820269440.0U CN207987786U (en) 2018-02-24 2018-02-24 No. 0 block bracket prepressing structure of continuous beam bridge pier in water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820269440.0U CN207987786U (en) 2018-02-24 2018-02-24 No. 0 block bracket prepressing structure of continuous beam bridge pier in water

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108193605A (en) * 2018-02-24 2018-06-22 中交路桥建设有限公司 No. 0 block bracket prepressing structure of continuous beam bridge pier in water
CN111455859A (en) * 2020-04-29 2020-07-28 中铁十五局集团有限公司 Construction method for bracket of No. 0 and No. 1 steel bridge with high piers and continuous steel structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108193605A (en) * 2018-02-24 2018-06-22 中交路桥建设有限公司 No. 0 block bracket prepressing structure of continuous beam bridge pier in water
CN111455859A (en) * 2020-04-29 2020-07-28 中铁十五局集团有限公司 Construction method for bracket of No. 0 and No. 1 steel bridge with high piers and continuous steel structure

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