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Sectional fabricated-type I-shaped composite beam body

A technology of I-shaped and composite beams, which is applied in bridges, buildings, etc., can solve the problems of lateral overturning of single-piece beam erection, low lateral stiffness of large T-beams, cumbersome layout of construction formwork, etc., so as to reduce the cost and be practical for major projects Significance and economic benefits, good construction stability

Inactive Publication Date: 2017-10-03
ANHUI TRANSPORT CONSULTING & DESIGN INST
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  • Claims
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Problems solved by technology

However, small box girders have problems such as cumbersome layout of construction formwork (the web is laid obliquely and there is an internal formwork), and the connection with steel plate girders is not aesthetically pleasing, etc.; large T girders have low lateral stiffness, and beam body side bending may occur during construction phenomenon, and because of its high beam height and high center of gravity, the single-piece beam erection is prone to lateral overturning and other problems
Moreover, small box girders and large T girders are generally prefabricated by whole beams, which is not conducive to long-distance transportation, especially in mountainous areas, where transportation difficulties exist

Method used

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  • Sectional fabricated-type I-shaped composite beam body
  • Sectional fabricated-type I-shaped composite beam body
  • Sectional fabricated-type I-shaped composite beam body

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Embodiment Construction

[0022] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further elaborated below in conjunction with specific embodiments and accompanying drawings, but the following embodiments are only preferred embodiments of the present invention, not all . Based on the examples in the implementation manners, other examples obtained by those skilled in the art without making creative efforts all belong to the protection scope of the present invention.

[0023] Such as Figure 1-4 shown

[0024] The segmentally assembled I-shaped composite beam is composed of several prefabricated segmental I-shaped composite beams 1, shear keys 3, and prestressed steel tendons 2, and the shear keys 3 are fixed on the prefabricated segmental I-shaped composite beam 1 The two ends of the prefabricated segmental I-shaped composite beams 1 are connected together by shear keys 3, and the prestressed ...

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Abstract

The invention provides a sectional fabricated-type I-shaped composite beam body, and relates to the field of railway concrete beam type structures. The sectional fabricated-type I-shaped composite beam body is characterized in that the sectional fabricated-type I-shaped composite beam body is composed of a plurality of pre-fabricated sectional I-shaped composite beams, shear connectors, and pre-stressed steel strands, the shear connectors are fixedly arranged at the two ends of each prefabricated sectional I-shaped composite beam, the prefabricated sectional I-shaped composite beams are connected together through the shear connectors, and the pre-stressed steel strands are arranged between every two sectional I-shaped composite beams and located in the two sectional I-shaped composite beams. The sectional fabricated-type I-shaped composite beam body is convenient to transport, rapid to construct, simple in formwork, and good in construction stability, and can be promoted and used in medium and small-span bridges.

Description

technical field [0001] The invention relates to the field of highway concrete beam structures, in particular to a segmentally assembled I-shaped composite beam. Background technique [0002] With the rapid development of bridge construction in our country, there are more and more bridges with various structural forms, and the requirements for various performances of bridges are also getting higher and higher. Small and medium span bridges account for the vast majority of bridge projects. Reasonable selection of the structural form of this part of the bridge is crucial to ensuring bridge performance, controlling investment, and speeding up construction progress. The commonly used structural section forms of small and medium-span bridges are hollow slabs, densely ribbed small T-beams, small box girders, and large T-beams. When the span is less than 20m, it is generally considered to use hollow slabs or small ribbed T-beams. When the span is greater than 20m, it is generally...

Claims

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Application Information

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IPC IPC(8): E01D2/02
CPCE01D2/02
Inventor 胡可杨晓光徐宏光吴平平郑建中魏民朱俊许大晴谢玉萌
Owner ANHUI TRANSPORT CONSULTING & DESIGN INST
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