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Combined beam connecting structure with welding studs and application thereof

A technology for connecting structures and composite beams, which is applied in bridges, bridge parts, bridge construction, etc., can solve problems such as the gap between the upper spliced ​​plate and the steel beam, the large load of the steel beam, and the weak combination of steel and concrete, so as to achieve enhanced strength and Reliability, reduce production and installation costs, and speed up construction

Inactive Publication Date: 2016-10-05
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If no shear connector is installed in the structural part, the combination of steel and concrete will be weak, and the steel beam will bear a large load, which will make the originally weak connection joint more unfavorable
If the shear connectors are welded on the upper splicing plate of the joint, it will often affect the tightening operation of high-strength bolts, resulting in the limitation of the number of shear connectors
And under the action of load, the force of the shear connector will be directly transmitted to the upper splicing plate, so that the upper splicing plate bears a large local load, which will cause the upper splicing plate to be partially lifted or pried up, and the lever effect of lifting or prying up It will have a greater effect on the high-strength bolts, which may cause the upper spliced ​​plate and the steel beam to be directly separated, causing the two to directly slide or move relative to each other

Method used

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  • Combined beam connecting structure with welding studs and application thereof
  • Combined beam connecting structure with welding studs and application thereof
  • Combined beam connecting structure with welding studs and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A composite beam connection structure 300 with welding studs, its combined section and elevation are as follows figure 1 and figure 2 As shown, it is mainly used for steel and concrete composite beams, which includes a spliced ​​plate group 200 . The splice board group 200 includes a large splice board 201 and a small splice board 202 . Several welding studs 203 are welded on the large splicing plate. The splicing plate group 200 is provided with at least two sets of bolt groups 100 capable of connecting with steel beams. The bolt set 100 includes a threaded screw 101 , a fixing nut 102 , a fastening nut 103 , an anchor nut 104 , a washer 105 and a washer 2 106 . Wherein, the first gasket 105 is located between the fixing nut 102 and the small splicing plate 202 , and the second gasket 106 is located between the fastening nut 103 and the large splicing plate 201 . The fixing nut 102 is located at the lower surface of the steel beam flange, and the free end of the t...

Embodiment 2

[0044] Combined Sectional View image 3 and elevations Figure 4 The composite beam connection structure 300 with welding studs of the present invention is described. The difference from Embodiment 1 is that the composite beam connection structure 300 with welding studs of this embodiment also includes at least two sections of steel beams 301, spliced ​​plate groups 200 is connected with steel beam 301 through at least two sets of bolt groups 100 . Steel girder 301 is shaped steel girder and welded steel girder, and is steel plate girder, steel box girder and steel truss girder. The contact surface of the spliced ​​plate group 200 and the top plate of the steel beam 301 adopts an anti-corrosion coating system that meets the requirements of the friction surface.

Embodiment 3

[0046] Combined Sectional View Figure 5 and elevations Figure 6 Illustrate that the composite beam 400 containing the composite beam connection structure with welding studs of the present invention includes a concrete slab 401 that can be cast at one time on site, cast in sections, or partially prefabricated and cast in place, and at least one set of concrete slabs located at the bottom of the concrete 401 Composite beam connection structure 300 with welding studs. The fixed end of the threaded screw 101 in the composite beam connection structure 300 with welding studs is located on the bottom surface of the upper flange of the steel beam 301, and the free end of the threaded screw 101 passes through the upper flange of the steel beam 301 and the splicing plate group 200 and is buried In the concrete post-casting section 401. The drilling accuracy of the bolt holes of the spliced ​​plate group 200 and the steel beam 301 is the same as that required for high-strength bolt h...

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Abstract

The invention relates to a combined beam connecting structure with welding studs and application thereof. The connecting structure comprises a splice plate set and a bolt set, wherein the splice plate set at least includes a large splice plate and two small splice plates, and a plurality of welding stud connectors are welded to the large splice plate; the bolt set at least includes two bolt assemblies each including a threaded shank, a fixing nut connected to the surface of the small splice plates, a fastening nut connected to the surface of the large splice plate and an anchor nut connected to the free end of the threaded shank. The bolt set ensures that steel structures of key stress-bearing parts in a combined beam are connected effectively, the free end shanks and anchor nuts in the bolt set and the welding studs on the large splice plate ensure that steel and concrete are connected effectively, the usage of connecting materials for the combined beam can be reduced, welding at a worksite is eliminated, manufacturing cost is reduced, engineering construction speed is increased, total engineering manufacturing cost is reduced, and durability of the structure is improved.

Description

technical field [0001] The invention relates to the field of composite structures, in particular to a composite beam connection structure with welding studs and its application. Background technique [0002] Composite structure is a structure made of two or more materials in the same section or each member. Because of its advantages of reasonable material utilization and convenient construction, it is widely used in road, bridge and construction fields. In recent years, continuous beams of composite structures have gradually replaced simply supported beams due to the advantages of comfortable driving, small building height, and good integrity, and have become the main expression form of beam bridges with composite structures. [0003] At present, there are generally two structural forms of steel beam joints in steel and concrete composite structures, welding and bolting. Welding will produce large construction errors; and it will produce residual stress, which is extremely ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/00E01D21/00E04C3/32
Inventor 苏庆田蒋垠茏杨国涛陈轶迪万小霞李雨韩旭杨荣荣王瑞雪于文涛
Owner TONGJI UNIV
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