A preparation structure of prestressed concrete slab structural reinforcement for high-speed railway

Abstract

The invention provides a configuration structure of prestressed large panel concrete structure steel reinforcement for high-speed rail, wherein the configuration structure adopts four-layered structural reinforcements which are not mutually overlapping jointed, is provided with perforated ribbed bars, and is good in insulating effect. The structural reinforcements and the ribbed bars are connected to be four-layered structural reinforcement meshes which are respectively an upper transverse structural reinforcement mesh, an upper longitudinal structural reinforcement mesh, a lower longitudinal structural reinforcement mesh and a lower transverse structural reinforcement mesh from top to bottom; the four-layered structural reinforcement meshes are all tightly arranged in a manner that the section centers are symmetrical; and transverse frame ribbed bars and longitudinal frame ribbed bars are connected at four corner intersection parts by using bolts. Through changing thoughts of technology and improving application conditions, the configuration structure of the prestressed large panel concrete structure steel reinforcement for the high-speed rail achieves the aims of saving materials, reducing construction costs, and improving the overall performance of large panel concrete.

Description

technical field [0001] The invention relates to a preparation structure of structural steel bars, in particular to a preparation structure of prestressed concrete large slab structural steel bars for high-speed railway construction. Background technique [0002] my country's high-speed railway operation mileage ranks first in the world, and more new railways will be put into operation in recent years, and the high-speed railway passenger dedicated line with a train speed of about 350KM / h will reach 13,000KM. Therefore, the track construction of high-speed railway is very important, and prestressed concrete slabs must be used to lay the foundation. [0003] In traditional prestressed concrete slabs, in order to maintain mutual insulation and other technical requirements, the internal structural steel bars will contain steel coatings and plastic insulation cards and other foreign objects that are not suitable for concrete, so that the entire slab shrinks under temperature and ...

AI Technical Summary

Problems solved by technology

[0003] In traditional prestressed concrete slabs, in order to maintain mutual insulation and other technical requirements, the internal structural steel bars will contain steel coatings and plastic insulation cards and other foreign objects that are not suitable for concrete, so that the entire slab shrinks under temperature and stretches under force. Under the conditions, the physical creep of the accompanying concrete under compression and tension is inconsistent with the overall creep, which affects the stability and durability of the concrete slab

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