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Continuous girder-arch composite bridge with fish-spine structure

A beam-arch combination and fish-back beam technology, applied in the direction of bridges, arch bridges, bridge forms, etc., can solve the problem of increasing beam height at the fulcrum, and achieve the effect of reducing the project scale, large structural rigidity, and reducing length.

Active Publication Date: 2016-03-30
SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] 1) The continuous beam generally adopts variable cross-section, and the beam height at the fulcrum has a certain increase

Method used

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  • Continuous girder-arch composite bridge with fish-spine structure
  • Continuous girder-arch composite bridge with fish-spine structure
  • Continuous girder-arch composite bridge with fish-spine structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The purpose of the present invention is achieved through the following technical solutions: as figure 2As shown, the continuous beam-arch composite bridge of the fish-back structure provided in this embodiment is a continuous beam-arch composite bridge of the single-arch three-span fish-back structure, which includes: a main beam of the fish-back structure, several bridges erected on the main bridge. The arch rib 3 on the beam and used to bear the axial pressure and bending moment, and a number of suspenders 4 arranged between the main beam and the arch rib 3, the main beam is mainly composed of a contour box bridge deck 1 and Several variable-height fish-ridge walls 2 erected at intervals on the same-height box-type bridge deck 1 are integrally casted, and two adjacent fish-ridge walls 2 are connected by the arch ribs 3 . Among them, the contour box bridge deck 1 is used to bear the tensile force and local bending moment, the arch rib 3 bears the axial pressure and be...

Embodiment 2

[0077] According to the needs of actual engineering and stress, this embodiment provides a continuous beam-arch composite bridge with multi-arch and multi-span fish spine structure.

[0078] image 3 It is a structural diagram of the elevation direction of a continuous beam-arch composite bridge with a multi-arch multi-span fish spine structure.

[0079] like image 3 As shown, the number of arch ribs 3 of the continuous beam-arch composite bridge in this embodiment is multiple, and the number of spans of the continuous beam-arch composite bridge is multiple.

[0080] The structures of fish ridge wall 2, arch rib 3, and equal-height box-type bridge deck 1 in this embodiment, and the connection mode between suspender 4 and arch rib 3, and equal-height box-type bridge deck 1 are all completely consistent with those in embodiment 1. same.

Embodiment 3

[0082] According to the needs of actual engineering and stress, the fish-ridge wall of the continuous beam-arch composite bridge in this embodiment is a single-piece fish-ridge wall.

[0083] Figure 4a It is a layout structure diagram of a single fish ridge wall and arch rib 3 in the cross-sectional direction. like Figure 4a As shown, the single fishbone wall is arranged in the middle of the cross-section of the main girder.

[0084] The structures of fish ridge wall 2, arch rib 3, and equal-height box-type bridge deck 1 in this embodiment, and the connection mode between suspender 4 and arch rib 3, and equal-height box-type bridge deck 1 are all completely consistent with those in embodiment 1. same.

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Abstract

The invention discloses a continuous beam arch combined bridge of a fish bone beam structure. The continuous beam arch combined bridge of the fish bone beam structure comprises a main beam, arch ribs erected on the main beam and used for bearing axial pressure and bending moment, and a plurality of suspenders arranged between the main beam and the arch ribs, wherein the main beam of the continuous beam arch combined bridge is a fish bone beam. The fish bone beam comprises an equal-altitude box type bridge panel used for bearing pull force and partial bending moment, and a plurality of height-variable fish bone walls erected on the equal-altitude box type bridge panel, the height-variable fish bone walls enable the bending moment bearing position of the main beam to be stressed and in a reverse T shape, and every two adjacent fish bone walls are connected through the arch ribs. The continuous beam arch combined bridge of the fish bone beam structure has all the advantages of a traditional continuous beam arch combined bridge, the structural rigidity of a bridge body is high, the calculation length of an arch is shorter, and stability is better.

Description

technical field [0001] The invention relates to a continuous beam-arch composite bridge, in particular to a continuous beam-arch composite bridge with fish spine structure. Background technique [0002] The traditional continuous beam-arch composite bridge is actually a three-span variable-section continuous beam, and the middle hole is reinforced with a full arch to reduce the building height of the middle hole stiffened longitudinal beam, such as figure 1 shown. [0003] The peak moment and shear internal force of this type of bridge is borne by the composite structure, such as figure 1 As shown, the stiffened longitudinal girder 10 bears the tensile force and local bending moment, the arch rib 30 bears the axial pressure and bending moment, and the shear force is mainly borne by the vertical component of the axial force of the arch rib, which is the same as that of a general arch bridge. The two side spans are affected by the stiffness of the mid-span arch, which reduce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D4/00
CPCE01D4/00
Inventor 陆元春傅梅赵成栋侯引程
Owner SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
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