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Perforated stiffening rib-reinforced concrete combined steel beam and construction method thereof

A technology of reinforced concrete and stiffeners, applied in bridges, bridge materials, bridge construction, etc., can solve the problems of increased steel consumption, cost increase, and instability of the whole bridge, so as to reduce steel consumption, save engineering costs, The effect of improving performance

Pending Publication Date: 2021-12-31
XIAN MUNICIPAL ENG DESIGN & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the continuous steel girder structure, the pressure on the bottom plate near the support is relatively large, and local instability is prone to occur when the thickness of the plate is insufficient. The amount of steel increases and the cost increases

Method used

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  • Perforated stiffening rib-reinforced concrete combined steel beam and construction method thereof
  • Perforated stiffening rib-reinforced concrete combined steel beam and construction method thereof
  • Perforated stiffening rib-reinforced concrete combined steel beam and construction method thereof

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Embodiment Construction

[0027] The technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings, but the present invention can be implemented in various ways defined and covered by the claims.

[0028] The perforated stiffener-reinforced concrete combined steel girder involved in the present invention is welded on the bottom plate of the steel girder when the perforated stiffener is welded on the bottom plate of the steel girder, and at the same time transverse steel bars are interspersed in the opening of the perforated stiffener. After the beam erection is completed, concrete is poured on the base plate for construction.

[0029] The detailed structure is as follows:

[0030] refer to figure 1 , figure 2 with image 3 , a perforated stiffener-reinforced concrete combined steel girder involved in the present invention is mainly composed of a top plate 1, a middle web 2, a side web 9, a bottom plate 3, a diaphragm 4, a p...

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Abstract

The invention discloses a perforated stiffening rib-reinforced concrete combined steel beam and a construction method thereof. The steel beam comprises a top plate, a middle web plate, a side web plate, a bottom plate, a transverse partition plate, perforated stiffening ribs, penetrating steel bars, concrete and common stiffening ribs. The top plate, the middle web, the side webs and the bottom plate are welded to form a steel beam main body structure; longitudinal common stiffening ribs are welded on the top plate and the side web plates; longitudinal opening stiffening ribs are welded on the bottom plate at the support; concrete is cast in place on the bottom plate, and transverse partition plates are longitudinally arranged at intervals and welded to the top plate, the middle web plate, the side web plates and the bottom plate. The middle part of the transverse partition plate is provided with an opening. The steel beam and the concrete are connected through the perforated stiffening ribs, the steel beam bottom plate or the middle web plate and the side web plates are reinforced through the concrete, stress of the steel beam bottom plate is shared by the post-pouring concrete, the perforated stiffening ribs are restrained by the post-pouring concrete, out-of-plane instability of the stiffening ribs is prevented, the bottom plate or the web plates are reinforced through the concrete. The thickness of the reinforced plate does not need to be increased, and the steel consumption is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of bridge construction, and in particular relates to an opening stiffener-reinforced concrete combined steel beam and a construction method thereof. Background technique [0002] Steel girder is a commonly used structure in long-span bridges. It is usually welded and connected by top plate, bottom plate, web plate, diaphragm and stiffener. In the continuous steel girder structure, the pressure on the bottom plate near the support is relatively large, and local instability is prone to occur when the thickness of the plate is insufficient. The amount of steel increases and the cost increases. Concrete is a material commonly used in building structures. It has the characteristics of abundant raw materials, low cost, and excellent compression performance. Adding fiber materials to concrete can further enhance the crack resistance. Contents of the invention [0003] In view of this, the purpose of this patent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D2/04E01D21/00
CPCE01D2/04E01D21/00E01D2101/268
Inventor 龙刚樊泽刘永健高中俊王社平刘耀荣封伟付诚俊吴峰戚圣强郭强
Owner XIAN MUNICIPAL ENG DESIGN & RES INST
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