Reactive powder concrete straddle track beam and precasting technological process thereof

A technology of active powder and technological process, applied in the field of traffic engineering, can solve the problems of increasing the number of rail beams and substructures, increasing the workload of supporting beams and other components, and increasing the project cost, achieving good volume stability and reducing bridge piers. Amount of base material, effect of reducing section size

Inactive Publication Date: 2016-07-20
JIANGSU PROVINCIAL COMM PLANNING & DESIGN INST
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Problems solved by technology

However, the existing PC track beams and ordinary steel track beams have large cross-sectional dimensions, resulting in an increase in the weight of the beam body. The erection equipment and linear adjustment of the track beams require higher requirements and are more difficult.
However, due to the limitation of strength, the span of PC track beams is limited, which will lead

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  • Reactive powder concrete straddle track beam and precasting technological process thereof
  • Reactive powder concrete straddle track beam and precasting technological process thereof

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Embodiment Construction

[0027] The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.

[0028] like figure 1 As shown, the structure of the straddle track beam of the present invention is similar to that of the prior art, including an integrally formed track beam main body 1, top plate 2, web 3 and bottom plate 4. The key point is that the straddle track beam of the present invention is made of RPC high The material is prefabricated, based on the elasticity of RPC high-strength materials, in reducing the cross-sectional size of the track beams and reducing the amount of basic materials sent, it also improves the structural strength, durability and stability.

[0029] In order to better implement the present invention, the prefabrication process flow of the active powder concrete straddling track beam is also disclosed, including the following steps:

[0030] S1. Prepare the prefabricated formwork to ensure the shape and siz...

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Abstract

The invention discloses a reactive powder concrete straddle track beam and a precasting technological process thereof.The track beam is made of an RPC high-strength material through precasting and comprises a track beam body, a top plate, a web plate and a bottom plate which are formed integrally.The reactive powder concrete straddle track beam has the advantages that high tensile strength and durability of the RPC high-strength material are used fully, the section size of the track beam can be reduced remarkably, then the base material utilization amount of a pier is reduced, and structure strength, durability and stability are greatly improved.The straddle track beam excellent in performance can be obtained through the precasting technological process, has remarkable economical benefits and social benefits and has good popularization prospect.

Description

technical field [0001] The invention relates to an active powder concrete straddle track beam and its prefabricated process flow, belonging to the technical field of traffic engineering. Background technique [0002] At present, straddle track beams generally use prestressed concrete simply supported beams with standard sections (referred to as PC track beams). Since the track beams not only bear the vehicle load, but also serve as the running track of the train, they are called the lifeline of rail traffic. Its design must ensure the overall linearity requirements of the track and high structural strength, stiffness, vertical deflection and lateral torsional deformation resistance. However, the existing PC track beams and ordinary steel track beams have large cross-sectional dimensions, resulting in increased self-weight of the beams, and higher requirements and difficulties for the erection equipment and linear adjustment of the track beams. However, due to the limitation...

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Application Information

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IPC IPC(8): C04B28/02E01D2/04C04B14/48C04B14/06E01D101/26
CPCC04B28/02E01D2/04E01D2101/26E01D2101/262C04B14/06C04B14/48
Inventor 陈侃杨恒艳韩磊丁静张创罗安史航
Owner JIANGSU PROVINCIAL COMM PLANNING & DESIGN INST
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