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Fabricated composite structure bridge and construction method thereof

A combined structure and assembled technology, which is applied in the direction of erecting/assembling bridges, bridge construction, bridges, etc., can solve the problems of high cost and limited application scale of steel box girders

Pending Publication Date: 2022-05-06
SHENZHEN BRIDGE DOCTOR DESIGN & RES INSTITUDE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an assembled composite structure bridge, which aims to solve the technical problems of high cost of steel box girder and limited application scale in the prior art

Method used

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  • Fabricated composite structure bridge and construction method thereof
  • Fabricated composite structure bridge and construction method thereof
  • Fabricated composite structure bridge and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] figure 1 Shown is the schematic diagram of the three-dimensional structure of the assembled composite structure bridge of the present invention, said bridge comprises I-beam longitudinal girder 1, rigid transverse connection system 2 and cantilever bridge deck 3, and the longitudinal middle part of cantilever bridge deck 3 is provided with butt joint hole, The top surface of the flange plate of the longitudinal beam 1 is preset with shear nails, and the shear nails pass through the butt joint holes of the cantilever bridge deck 3; the transverse connection system 2 supports the cantilever bridge deck 3 laterally; the longitudinal beam 1 supports the cantilever bridge deck 3 The longitudinal middle part and the inner longitudinal edge, and the outer longitudinal edge of the cantilever bridge deck 3 are free edges floating out;

[0035] The longitudinal beam 1 is placed on the T beam or the cover beam;

[0036]The butt holes of the cantilever bridge deck coincide with th...

Embodiment 2

[0083] Such as Figure 6 Shown is another structural schematic diagram of two cantilever bridge decks arranged transversely, Figure 7 Shown is the structural diagram of the third longitudinal beam and beam, Figure 6 and Figure 7 Used in combination; the light-duty high-strength fabricated composite bridge includes I-beam longitudinal girders 11, 12, 13, rigid transverse linkages 21, 22 and cantilever bridge decks 31, 32, and the longitudinal middle part of the cantilever bridge deck is segmented with Butt joint holes for steel bars are reserved; shear stud areas are preset on the top surface of the flange plate of the outer longitudinal beam, and the shear stud areas correspond to and coincide with the butt joint holes one by one, while the shear stud areas The area passes through the butt joint hole of the cantilever deck; on both sides of the longitudinal centerline of the top surface of the flange plate of the inner longitudinal beam, there are preset continuous shear ...

Embodiment 3

[0088] Figure 8 Shown is the flow chart of the construction method of the prefabricated composite structure bridge of the present invention, described method comprises steps:

[0089] S101, I-steel longitudinal beams with shear studs preset on the top surface of prefabricated flange slabs, rigid transverse connections, and cantilever bridge decks with butt holes in the longitudinal middle;

[0090] The width of the butt joint hole is equal to the difference of the width of the flange plate at the top of the stringer minus 2a; the length of the butt joint hole is equal to the difference of the length of the cantilever bridge deck minus 2b;

[0091] Where a is the width of the supporting surface of the lapped or consolidated cantilever deck reserved for the top surface of the flange plate of the longitudinal girder, and the width a is reserved on both sides of the top of the longitudinal girder corresponding to the same cantilever deck;

[0092] b is the distance from the wide...

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Abstract

The invention discloses a fabricated combined bridge and a construction method thereof, the bridge comprises an I-shaped steel longitudinal beam, a rigid transverse linkage system and a cantilever bridge deck, a butt joint hole is formed in the longitudinal middle part of the cantilever bridge deck, a shear nail is preset on the top surface of a flange plate of the longitudinal beam, and the shear nail passes through the butt joint hole of the cantilever bridge deck; the transverse connecting system transversely supports the cantilever bridge panel; the longitudinal beam supports the longitudinal middle part and the inner side longitudinal edge of the cantilever bridge deck, and the outer side longitudinal edge of the cantilever bridge deck is a floating free edge; a butt-joint hole is formed in the longitudinal middle part of a cantilever bridge deck, and a matched shear nail is preset on the top surface of a flange plate of a longitudinal beam, so that concrete is cast in place in a shear nail area; the I-shaped steel longitudinal beam replaces a traditional steel box, factory prefabrication is achieved, machining is easy, the manufacturing cost is low, the self weight is light, assembly is easy, the construction period is shortened, and the cantilever bridge panel enables the clearance under the bridge to be wider and the landscape effect to be better.

Description

technical field [0001] The invention relates to the field of bridges and building structures, in particular to an assembled composite structure bridge and a construction method thereof. Background technique [0002] With the increase of China's steel production and the development of steel structure processing and manufacturing technology, the number of steel bridges being built is constantly increasing. Especially in viaducts on municipal roads, steel box girders are favored and concerned by more and more bridge engineers because of their good torsional performance, fast construction speed, and reduced impact on traffic during construction. [0003] However, due to its extremely high cost, steel box girders are not widely used in China. Contents of the invention [0004] The purpose of the present invention is to provide an assembled composite structure bridge, aiming to solve the technical problems of high cost and limited application scale of steel box girders in the p...

Claims

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Application Information

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IPC IPC(8): E01D15/133E01D19/12E01D19/00E01D21/00
CPCE01D15/133E01D19/125E01D19/00E01D21/00
Inventor 李勇张力文剑波刘念琴马立平李敏
Owner SHENZHEN BRIDGE DOCTOR DESIGN & RES INSTITUDE CO LTD
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