Reactive powder concrete straddle track beam and precasting technological process thereof

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...

AI Technical Summary

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 to an increase in the number of track beams and substructures, increase the cost of the project, increase the workload of supports and other components, and the workload of later erection beams. In view of the above reasons, it is necessary to study how Reduce the cross-sectional dimensions of track beams while increasing their structural strength, durability and stability

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