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Partially laminated beam bridge

A pier and girder technology applied in the field of partially superimposed girder bridges to achieve the effects of low cost, high material utilization and short construction time

Inactive Publication Date: 2019-09-20
广西鸿鹄结构工程技术信息咨询有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In order to solve the outstanding problems existing in the existing steel-concrete composite and prestressed concrete continuous beam bridges, the present invention proposes a new continuous beam bridge---partially laminated beam bridge

Method used

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Effect test

Embodiment

[0082] The span arrangement (90m+3×165m+90m) of the partially superimposed girder bridge in this embodiment is the same as that of the North Branch Bridge of the Second Nanjing Yangtze River Bridge. Specifically: if figure 1As shown, a partially laminated girder bridge is mainly composed of abutment 1, pier 2, concrete structure 3 and steel structure 4; the concrete structure 3 is arranged in the compression area of ​​the girder above the pier 2, and the rest are steel structures 4. To reduce the weight of the structure. A falcon is set above the concrete structure 3, and the embedded parts and shear connectors are welded around the junction of the concrete structure 3 and the steel structure 4. After the steel structure 4 is placed in place later, the steel structure 4 and the embedded parts welded together and poured with micro-expanding concrete to form the whole. The concrete structure arranged above the pier does not increase the load effect of the structure, but also g...

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Abstract

The invention discloses a partially laminated beam bridge which is mainly formed by a bridge abutment (1), a pier (2) and a beam body. A pressure zone of the beam body located above the pier (2) is of a concrete structure (3); the other part of the beam body is of a steel structure (4); a rabbet is arranged above the concrete structure (3); an embedded part and a shear connector are welded around the combination part of the concrete structure (3) and the steel structure (4); and in the later period, after the steel structure (4) is placed in place, the steel structure (4) and the embedded part are welded together, and micro-expansion concrete is poured to form a whole body. According to the partially laminated beam bridge provided by the invention, the excellent characteristics of tensile strength and concrete compressive strength of steel can be fully played, so that the material utilization rate is maximized; compared with a prestressed concrete continuous beam bridge, the partially laminated beam bridge is light in weight, so that a spanning capability of the bridge can be remarkably improved; and compared with a full-steel bridge, the partially laminated beam bridge is large in rigidity, less in steel consumption and low in cost.

Description

technical field [0001] The invention belongs to a girder bridge system, in particular to a partially superimposed girder bridge. Background technique [0002] The girder bridge is the most basic form of all bridge systems. Under the action of vertical load, the support only produces vertical reaction force without thrust. As a common system in girder bridges, continuous girder bridges have good overall performance, strong earthquake resistance, high structural rigidity, small deformation, good dynamic performance, gentle deformation and deflection curves of the main girder, and are conducive to high-speed driving and reduce the maintenance workload of the bridge. Small and other prominent advantages, are widely used in road and railway bridges. [0003] Continuous girder bridges usually consist of five parts: girder, deck structure, support, abutment, and foundation. The force transmission path is: live load → deck structure → main girder → support → abutment → foundation. ...

Claims

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Application Information

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IPC IPC(8): E01D19/00E01D19/02E01D2/00E01D101/24E01D101/32
CPCE01D2/00E01D19/00E01D19/02E01D2101/24E01D2101/32
Inventor 谢肖礼覃霞谢远忠黄扬
Owner 广西鸿鹄结构工程技术信息咨询有限公司
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