CN101787675A - Connecting structure of circular steel pipe light aggregate concrete beam and reinforced concrete bridge deck and construction process thereof - Google Patents
Connecting structure of circular steel pipe light aggregate concrete beam and reinforced concrete bridge deck and construction process thereof Download PDFInfo
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- CN101787675A CN101787675A CN 201010120579 CN201010120579A CN101787675A CN 101787675 A CN101787675 A CN 101787675A CN 201010120579 CN201010120579 CN 201010120579 CN 201010120579 A CN201010120579 A CN 201010120579A CN 101787675 A CN101787675 A CN 101787675A
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Abstract
The invention discloses a connecting structure of a circular steel pipe light aggregate concrete beam and a reinforced concrete bridge deck and a construction process thereof. The structure comprises a circular steel pipe light aggregate concrete beam and a reinforced concrete bridge deck, wherein the steel pipe of the circular steel pipe light aggregate concrete beam is provided with a steel plate with an open hole; the reinforcing steel bar in the reinforced concrete bridge deck passes through the hole of the steel plate, and is cast with the steel plate integrally; and strengthening ribs are welded on the inner side at the bottom of the circular steel pipe of the circular steel pipe light aggregate concrete beam. Compared with the prior art, the invention is characterized in that the circular steel is welded with the steel plate, and the steel plate is provided with the hole; the reinforcing steel bar of the reinforced concrete bridge deck passes through the steel plate, the reinforcing steel bar and the steel plate are cast integrally, thereby the circular steel pipe light aggregate concrete beam and the reinforced concrete bridge deck are combined organically into a whole, the strength of the whole body and the reliability of the connection are improved.
Description
Technical field
The present invention is a kind of circular steel pipe light aggregate concrete beam and reinforced concrete bridge deck plate link technique, belongs to compound beam field in the bridge engineering.
Background technology
Along with China's rapid economy development, bridge need be built safe, the economic and Longspan Bridge attractive in appearance that can cross over rivers, bay and mountain valley, and this moment, the deadweight of structure became the key factor that the restriction bridge construction develops.With respect to the common steel tube concrete structure, Lightweight Aggregate Concrete Filled Steel Tube has the bearing capacity height equally, ductility is good and advantage such as easy construction, and its deadweight simultaneously can alleviate about 20%.
For a long time, steel and concrete are the main materials of bridge construction, and these two kinds of materials have very big-difference on physical property and mechanical property.Adopt the bridge of steel or concrete homogenous material, its structural performance often is subjected to the not enough in some aspects restriction of material behavior, and these two kinds of materials are on performance, and are existing than big-difference, and very strong complementarity is arranged again.Utilize their advantages separately to avoid its shortcoming with holding water, and in design and construction, be able to reasonable performance, structure more rationally and is effectively operated.Steel-concrete combination beam structure just is based on a kind of new structure that this thought grows up.Steel-concrete combination beam is had extensive studies both at home and abroad at present, is primarily aimed at the compound beam that girder steel and concrete form and studies, mainly adopted peg etc. vertically shear connector as shear connector; For the round steel pipe beam, United States Nebraska Lincoln university is studied the round steel pipe girder, and it has structurally adopted peg as shear connector, and pvc pipe is set to alleviate dead load in round steel pipe.
Circular steel pipe light aggregate concrete beam and reinforced concrete bridge deck plate are connected to form compound beam can give full play to the compressive property of reinforced concrete bridge deck plate and the anti-bending strength of circular steel pipe light aggregate concrete beam, special its superior anti-fatigue performance of in railroad bridge, can giving full play to, and the Lightweight Aggregate Concrete Filled Steel Tube beam can further alleviate the superstructure deadweight, alleviate basic burden, have tangible economic benefit.
Summary of the invention
Problem solved by the invention is to have realized that the circular steel pipe light aggregate concrete beam is connected with the integral body of reinforced concrete bridge deck plate, provides a kind of circular steel pipe light aggregate concrete beam that makes to be applied to syndeton and construction technology in the bridge compound beam.
For addressing the above problem, syndeton of the present invention is:
Circular steel pipe light aggregate concrete beam and reinforced concrete bridge deck board connecting structure, comprise circular steel pipe light aggregate concrete beam and reinforced concrete bridge deck plate, on the round steel pipe of described circular steel pipe light aggregate concrete beam, be welded with the steel plate of perforate, reinforcing bar in the described reinforced concrete bridge deck plate passes the hole of described steel plate, integrated poured with described steel plate, the inboard bottom the round steel pipe of described circular steel pipe light aggregate concrete beam is welded with reinforcing rib.
The construction technology of a kind of circular steel pipe light aggregate concrete beam and reinforced concrete bridge deck board connecting structure, its feature adopts following steps:
1), welds reinforcing rib in the inboard location of round steel pipe, cast light aggregate concrete formation circular steel pipe light aggregate concrete beam in round steel pipe;
2), on round steel pipe, locate, the steel plate of welding perforate, the bottom layer of the reinforcing steel of reinforced concrete bridge deck plate passes described steel plate;
3), to compound beam assembling reinforcement, formwork, fluid concrete.
Problem solved by the invention realizes that by following approach its structure is formed and is made up of steel plate, circular steel pipe light aggregate concrete beam, the reinforcing rib of reinforced concrete bridge deck plate, perforate.Its principal character is: the one, and pouring light aggregate concrete is to alleviate the superstructure deadweight of bridge in steel pipe, and the inboard welding reinforcing rib bottom the steel pipe of compound beam is with the reinforced bottom anti-bending bearing capacity; The 2nd, to the perforate of perforate steel plate, the aperture is bigger than armored concrete slab bar diameter, and the spacing in hole is identical with the rebar spacing of bridge deck; The 3rd, at the welded top perforate steel plate of steel pipe, lower floor's reinforcing bar of reinforced concrete bridge deck plate is passed perforate steel plate and whole pouring concrete, realized that the Lightweight Aggregate Concrete Filled Steel Tube beam is connected with the integral body of reinforced concrete bridge deck plate.
Performance for more different shear connectors, in the structural experiment chamber peg, perforate steel plate, three kinds of shear connectors of bent-up bar are provided with three groups of test component research experiment altogether, result of study shows: the shear-carrying capacity of peg and bent-up bar is close, and slippage is big relatively, and the shear-carrying capacity of perforate steel plate is more than 3 times of peg, and slippage is less relatively.The circular steel pipe light aggregate concrete combination beam is tested, result of study shows: the circular steel pipe light aggregate concrete combination beam has higher anti-bending bearing capacity, satisfy instructions for use by its bearing capacity in the winding degree scope of designing requirement, adopted the perforate steel plate to make reinforced concrete bridge deck plate and circular steel pipe light aggregate concrete beam that the good effect that is connected be arranged as vertical shear connector, slippage is about 0.1mm relatively, satisfies the engineering application request.
In conjunction with experimental study advantage of the present invention:
One, pours into a mould light aggregate concrete in the round steel pipe, on the basis of satisfying the bearing capacity performance, alleviated the deadweight of bridge construction top; Welding steel on round steel, and perforate on steel plate, the reinforcing bar of reinforced concrete bridge deck plate is passed steel plate, then that reinforcing bar and steel plate is integrated poured, thereby round steel and reinforced concrete bridge deck plate organically are combined into an integral body, improved integral intensity with and be connected reliable.
Two, strengthened the anti-bending bearing capacity of beam at the inboard of round steel pipe welding reinforcing rib;
Three, vertical shear-carrying capacity height of perforate steel plate shear connector, and slippage is little relatively, connects reliable for effect.
Description of drawings
Fig. 1 is a circular steel pipe light aggregate concrete combination beam connection diagram.
The specific embodiment
When using in actual engineering, at first make the perforate steel plate in factory, the aperture is bigger than the diameter of bridge deck reinforcing bar; At the inboard location welding of steel pipe reinforcing rib 4, the cast light aggregate concrete forms circular steel pipe light aggregate concrete beam 3 by the designing and calculating requirement, and this moment, round steel pipe can be directly as template; In the steel pipe top location, weld the steel plate 2 of perforate on request; In the steel plate 2 of perforate, wear the bridge deck reinforcing bar, then reinforced concrete bridge deck plate 1 and junction are carried out assembling reinforcement, formwork, fluid concrete; Water with the reinforced concrete bridge deck plate is whole the wedge shape junction.
Claims (2)
1. circular steel pipe light aggregate concrete beam and reinforced concrete bridge deck board connecting structure, comprise circular steel pipe light aggregate concrete beam (3) and reinforced concrete bridge deck plate (1), it is characterized in that: the steel plate (2) that on the round steel pipe of described circular steel pipe light aggregate concrete beam (3), is welded with perforate, reinforcing bar in the described reinforced concrete bridge deck plate (1) passes the hole of described steel plate (2), integrated poured with described steel plate (2), the inboard bottom the round steel pipe of described circular steel pipe light aggregate concrete beam (3) is welded with reinforcing rib (4).
2. the construction technology of circular steel pipe light aggregate concrete beam as claimed in claim 1 and reinforced concrete bridge deck board connecting structure is characterized in that: adopt following steps:
1), welds reinforcing rib (4) in the inboard location of round steel pipe, cast light aggregate concrete formation circular steel pipe light aggregate concrete beam (3) in round steel pipe;
2), on round steel pipe, locate, the steel plate (2) of welding perforate, the bottom layer of the reinforcing steel of reinforced concrete bridge deck plate (1) passes described steel plate (2);
3), to compound beam assembling reinforcement, formwork, fluid concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010120579 CN101787675A (en) | 2010-03-09 | 2010-03-09 | Connecting structure of circular steel pipe light aggregate concrete beam and reinforced concrete bridge deck and construction process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010120579 CN101787675A (en) | 2010-03-09 | 2010-03-09 | Connecting structure of circular steel pipe light aggregate concrete beam and reinforced concrete bridge deck and construction process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101787675A true CN101787675A (en) | 2010-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010120579 Pending CN101787675A (en) | 2010-03-09 | 2010-03-09 | Connecting structure of circular steel pipe light aggregate concrete beam and reinforced concrete bridge deck and construction process thereof |
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| CN (1) | CN101787675A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121227A (en) * | 2011-01-23 | 2011-07-13 | 长安大学 | Combined bridge deck of arched corrugated steel plates and concrete |
| CN103628403A (en) * | 2013-09-16 | 2014-03-12 | 安徽省交通规划设计研究院有限公司 | Tubular concrete bridge pier |
| CN104612047A (en) * | 2014-12-17 | 2015-05-13 | 邢台路桥交通设施有限公司 | Reinforced concrete multi-chamber beam slab bottom plate and manufacturing technology thereof |
| CN109338899A (en) * | 2018-11-30 | 2019-02-15 | 西安科技大学 | A kind of the steel reinforced concrete combination beam and its construction method of weldless connection part |
| CN113106879A (en) * | 2021-04-19 | 2021-07-13 | 华东交通大学 | Connecting structure for widening concrete box girder by steel box girder and construction method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2507939Y (en) * | 2001-09-25 | 2002-08-28 | 张骏华 | Concrete member of prestressed steel pipe |
| CN201351307Y (en) * | 2008-12-22 | 2009-11-25 | 华侨大学 | Shear-resistant connector |
-
2010
- 2010-03-09 CN CN 201010120579 patent/CN101787675A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2507939Y (en) * | 2001-09-25 | 2002-08-28 | 张骏华 | Concrete member of prestressed steel pipe |
| CN201351307Y (en) * | 2008-12-22 | 2009-11-25 | 华侨大学 | Shear-resistant connector |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102121227A (en) * | 2011-01-23 | 2011-07-13 | 长安大学 | Combined bridge deck of arched corrugated steel plates and concrete |
| CN103628403A (en) * | 2013-09-16 | 2014-03-12 | 安徽省交通规划设计研究院有限公司 | Tubular concrete bridge pier |
| CN103628403B (en) * | 2013-09-16 | 2015-08-05 | 安徽省交通规划设计研究总院股份有限公司 | Tubular concrete bridge pier |
| CN104612047A (en) * | 2014-12-17 | 2015-05-13 | 邢台路桥交通设施有限公司 | Reinforced concrete multi-chamber beam slab bottom plate and manufacturing technology thereof |
| CN104612047B (en) * | 2014-12-17 | 2016-06-22 | 邢台路桥交通设施有限公司 | Steel reinforced concrete multicell beam slab base plate and processing technique thereof |
| CN109338899A (en) * | 2018-11-30 | 2019-02-15 | 西安科技大学 | A kind of the steel reinforced concrete combination beam and its construction method of weldless connection part |
| CN109338899B (en) * | 2018-11-30 | 2023-06-09 | 西安科技大学 | Steel-concrete composite beam without welding connector and construction method thereof |
| CN113106879A (en) * | 2021-04-19 | 2021-07-13 | 华东交通大学 | Connecting structure for widening concrete box girder by steel box girder and construction method |
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Open date: 20100728 |