CN207277211U - Large steel pipe truss for bent cap cast-in-place construction - Google Patents

Large steel pipe truss for bent cap cast-in-place construction Download PDF

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Publication number
CN207277211U
CN207277211U CN201721209336.4U CN201721209336U CN207277211U CN 207277211 U CN207277211 U CN 207277211U CN 201721209336 U CN201721209336 U CN 201721209336U CN 207277211 U CN207277211 U CN 207277211U
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China
Prior art keywords
boom
truss
steel pipe
upright bar
bent cap
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CN201721209336.4U
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Chinese (zh)
Inventor
桂军
谢华通
欧亮亮
梅开智
黄展恩
代婷蓉
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LONGYUAN CONSTRUCTION GROUP CO Ltd
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LONGYUAN CONSTRUCTION GROUP CO Ltd
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Priority to CN201721209336.4U priority Critical patent/CN207277211U/en
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Abstract

It the utility model is related to a kind of large steel pipe truss for bent cap cast-in-place construction, two panels truss is located at pier column both sides, and fixed with pier column, truss is made of upright bar, top boom, lower boom, big brace, web member, upright bar is made of upper pright stanchion and lower upright bar, lower upright bar is the Two bors d's oeuveres steel pipe being placed on cushion cap face, Two bors d's oeuveres steel pipe upper end is fixedly connected with upper pright stanchion by lower boom, top boom is fixedly connected with the top of upper pright stanchion, big brace is connected between top boom and lower boom, web member is connected between top boom and big brace.The utility model can solve bent cap and be located at river side, and simultaneously near water, and road has difference in height with cushion cap face, K33 bent caps are located at river center, the technical problem of console mode full framing can not be set up, and makes full use of cushion cap as bearing-surface, using self-control large steel pipe truss and construction method side.In addition, the truss can also be used for the standard bent cap on general section, truss both sides space can meet current demand.

Description

Large steel pipe truss for bent cap cast-in-place construction
Technical field
A kind of building bent cap is the utility model is related to, especially a kind of large steel pipe truss for bent cap, belongs to large steel pipe Truss technology field.
Background technology
Certain engineering is located on the outer ring of present situation east, and foundation situation is good, and bent cap uses Support Method cast-in-place construction.Through to handing over The influence factors such as logical, river, greenbelt consider, which will use pattern as large steel pipe truss.
Wherein, K23, K24, K32, K34 bent cap are located at river side, and simultaneously near water, and road has height with cushion cap face Difference, K33 bent caps are located at river center, can not set up console mode full framing, need to make full use of cushion cap for this as supporting Face, using self-control large steel pipe purlin frame method construction.Certainly, this truss can also be used for the standard bent cap on general section, truss both sides Space can meet current demand.
The content of the invention
The utility model is that bent cap to be solved is located at river center, and the technology that can not set up console mode full framing is asked Topic, and a kind of large steel pipe truss for bent cap cast-in-place construction is provided.
The technical solution of the utility model is:A kind of large steel pipe truss for bent cap cast-in-place construction, has two panels truss, It is placed on cushion cap face, using cushion cap face as bearing-surface, two panels truss is located at the both sides of pier column, and is fixed with pier column, purlin Frame is made of upright bar, top boom, lower boom, big brace, web member, and the upright bar is made of upper pright stanchion and lower upright bar, and lower upright bar is The Two bors d's oeuveres steel pipe being placed on cushion cap face, Two bors d's oeuveres steel pipe upper end are fixedly connected with upper pright stanchion by lower boom, and upper pright stanchion top is fixed to be connected Top boom is connected to, big brace is connected between top boom and lower boom, web member is connected between top boom and big brace.
Some vertical bridges are equipped with above top boom to distribution beam, bridge is indulged to spacing 300mm~600mm between distribution beam, indulges Bridge to left between distribution beam and bent cap beam bottom >=space of 1.2m sets up full framing regulating course.
Truss depth is 4m.Top boom is load-bearing crossbeam, and using Two bors d's oeuveres 56a I-steel, lower boom uses Two bors d's oeuveres HW300 × 300 shaped steel, web member use Ф 400mm × 7mm and Ф 277mm × 6.5mm steel pipes.Lower upright bar is by Two bors d's oeuveres Ф 400mm × 7mm Steel pipe manufacturing.Bridge uses 16# I-steel to distribution beam.
For ease of transport, top-bottom chord moment of flexure minimum position, splice point is set at two fulcrums 1/4, using high intensity spiral shell Tether and connect.
The beneficial effects of the utility model are:
The utility model can solve bent cap and be located at river side, and simultaneously near water, and road has difference in height with cushion cap face, K33 bent caps are located at river center, can not set up the technical problem of console mode full framing, and make full use of cushion cap conduct Bearing-surface, using self-control large steel pipe truss and construction method side.In addition, the truss can also be used for the standard bent cap on general section, Truss both sides space can meet current demand.
Brief description of the drawings
Fig. 1 is the large steel pipe truss structure schematic diagram for bent cap cast-in-place construction of the utility model;
Fig. 2 is truss installa-tion schematic diagram.
Embodiment
As shown in Figure 1, a kind of large steel pipe truss for bent cap cast-in-place construction, large steel pipe truss is directly using cushion cap face as branch Bearing surface.Large steel pipe truss patterning process, on-site consolidation.Large steel pipe truss is made using Q235 steel.Two panels truss is located at bridge pier The both sides of column, and fixed with pier column, truss is made of upright bar, top boom 3, lower boom 4, big brace 5, web member 6, upright bar It is made of upper pright stanchion 2 and lower upright bar 1, lower upright bar 1 is the Two bors d's oeuveres steel pipe being placed on cushion cap face, and Two bors d's oeuveres steel pipe upper end passes through lower boom 4 are fixedly connected with upper pright stanchion 2, and the top of upper pright stanchion 2 is fixedly connected with top boom 3, are connected between top boom 3 and lower boom 4 big oblique Bar 5, web member 6 is connected between top boom 3 and big brace 5.
Lower upright bar 1 is by Two bors d's oeuveres Ф 400mm × 7mm steel pipe manufacturings at single.Large steel pipe truss depth is 4m.Top boom 3 is held Great beam uses Two bors d's oeuveres 56a I-steel, lower boom 4 using the shaped steel of Two bors d's oeuveres HW300 × 300, web member 6 using Ф 400mm × 7mm and Ф 277mm × 6.5mm steel pipes, for ease of transport, set at upper and lower 3,4 moment of flexure minimum position of chord member, two fulcrums 1/4 Splice point is put, is connected using high-strength bolt.
Vertical bridge is to distribution beam above truss, and using 16# I-steel, spacing 300mm, 600mm is (with upper strata bowl fastening type steel pipe branch Erect bar collaboration).Set up full framing regulating course, and conduct in the space reserved between distribution beam and bent cap beam bottom no less than 1.2m Fall frame measure.
Large steel pipe truss is processed and erection construction method:
1st, shaped steel strictly presses design requirement used by truss, cannot be less than calculating specification, must not there is serious corrosion, hole The defects of hole, flexural deformation.
2nd, truss assembly error should meet construction precision requirement, and bolt location is aligned and tightens, truss absolute altitude precise control. Because processing and installation error causes the inconsistent place of absolute altitude, need pading plate levelling.
3rd, monolithic truss is after installation on ground is integral in spanning, using two 25t loop wheel machines, as shown in Fig. 2, being lifted Install (monolithic truss weighs about 9.1t).After monolithic truss erects, temporary consolidation binding should be carried out with pier column immediately, treated After another truss is erect, carry out in time to drawing stabilization by consolidation.
4th, should be before cofferdam demolition after the completion of pier column construction for the K33 pier capping beams among river, first will be lower vertical Column penstock installation fix in position, after the shaping of auxiliary bridge agent structure, loop wheel machine station carries out truss hoisting on auxiliary bridge bridge floor.
5th, systems stabilisation makes truss be connected with pier column using anchor ear, another to set bridging and connecting rod.
6th, height adjuster is using modulus type upright bar splicing adjustment, and inadequate adjustment member is in cushion cap upper concrete mats Block.
7th, bent cap load is delivered to truss, upright bar, cushion cap, each node by the distribution beam (No. 16 I-steel) on truss Place uses stiffened steel plates local reinforcement, and upright bar uses 15mm steel pipe back covers with cushion cap connecting portion, to increase forced area.
8th, operating platform design is 0.8m per side working width on the 16# I-steel of bent cap bottom longitudinal direction, is set every 1.8m Vertical posts, in vertical posts install twice horizontal rails, horizontal rails highly be 1.2m, and on request setting skirting board with Safety net.Longitudinal 16# I-steel and the binding of truss 16# iron wires for installing horizontal upright bar are firm.

Claims (5)

1. a kind of large steel pipe truss for bent cap cast-in-place construction, is placed on cushion cap face, using cushion cap face as bearing-surface, there is two panels Truss, two panels truss is located at the both sides of pier column, and is fixed with pier column, it is characterised in that:The truss by upright bar, on Chord member (3), lower boom (4), big brace (5), web member (6) are formed, and the upright bar is made of upper pright stanchion (2) and lower upright bar (1), under Upright bar (1) is the Two bors d's oeuveres steel pipe being placed on cushion cap face, and Two bors d's oeuveres steel pipe upper end is fixedly connected with upper pright stanchion (2) by lower boom (4), on Top boom (3) is fixedly connected with the top of upright bar (2), big brace (5), top boom are connected between top boom (3) and lower boom (4) (3) web member (6) is connected between big brace (5).
2. the large steel pipe truss according to claim 1 for bent cap cast-in-place construction, it is characterised in that:The top boom (3) some vertical bridges are equipped with above to distribution beam, indulge bridge to spacing 300mm~600mm between distribution beam, indulge bridge to distribution beam with Left between the beam bottom of bent cap >=space of 1.2m sets up full framing regulating course.
3. the large steel pipe truss according to claim 1 for bent cap cast-in-place construction, it is characterised in that:The truss depth For 4m.
4. the large steel pipe truss according to claim 1 for bent cap cast-in-place construction, it is characterised in that:The top boom (3) it is load-bearing crossbeam, using Two bors d's oeuveres 56a I-steel, lower boom (4) is used using the shaped steel of Two bors d's oeuveres HW300 × 300, web member (6) Ф 400mm × 7mm and Ф 277mm × 6.5mm steel pipes;Vertical bridge uses 16# I-steel to distribution beam;Lower upright bar is by Two bors d's oeuveres Ф 400mm × 7mm steel pipe manufacturings form.
5. the large steel pipe truss according to claim 1 for bent cap cast-in-place construction, it is characterised in that:For ease of transporting, Splice point is set at upper and lower chord member moment of flexure minimum position, two fulcrums 1/4, using high strength exploitation.
CN201721209336.4U 2017-09-20 2017-09-20 Large steel pipe truss for bent cap cast-in-place construction Active CN207277211U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721209336.4U CN207277211U (en) 2017-09-20 2017-09-20 Large steel pipe truss for bent cap cast-in-place construction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721209336.4U CN207277211U (en) 2017-09-20 2017-09-20 Large steel pipe truss for bent cap cast-in-place construction

Publications (1)

Publication Number Publication Date
CN207277211U true CN207277211U (en) 2018-04-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110184928A (en) * 2019-05-14 2019-08-30 宁波市政工程建设集团股份有限公司 A kind of pier stud construction method that the public rail using falsework is built together overhead

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110184928A (en) * 2019-05-14 2019-08-30 宁波市政工程建设集团股份有限公司 A kind of pier stud construction method that the public rail using falsework is built together overhead

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