Assembly type cement concrete pavement structure with prestress

Abstract

An assembly type cement concrete pavement structure with prestress comprises a first concrete plate and a concrete plate assembly which are connected in sequence, the first concrete plate and the concrete plate assembly are arranged in a spaced mode, and a plurality of prestress hole channels are formed in the first concrete plate and the concrete plate assembly; a plurality of first anchorage devices and a plurality of second anchorage devices are fixedly connected to the top ends of the first concrete slabs respectively and located at the two sides of the first concrete slabs respectively, first steel bars are arranged between the first anchorage devices and the second anchorage devices on the adjacent first concrete slabs, and the two ends of the first steel bars are fixedly connected with the first anchorage devices and the second anchorage devices respectively. and second reinforcing steel bars are arranged between the second anchorage devices and the first anchorage devices on the other adjacent first concrete plate. The step of applying prestress by tensioning the steel bars can be omitted, the construction efficiency is improved, meanwhile, the connection relation between the two adjacent prefabricated road plates is improved, and the possibility that the two adjacent prefabricated road plates are dislocated is reduced.

Description

technical field [0001] The invention relates to the technical field of road engineering, in particular to an assembled cement concrete pavement structure with prestress. Background technique [0002] With the development of society and economy, the traffic volume is increasing, and the requirements for the traffic road network are getting higher and higher, especially in economically developed areas, where the speed of road construction is higher. The prefabricated road surface is manufactured by factory panels, installed on site to achieve rapid completion of road construction work. [0003] However, because the prefabricated road slabs are independent of each other, they need to be combined by overlapping or embedding during the on-site installation process. After the combination is completed, operations such as grouting and fixing are performed. However, the above combination methods have load transfer between prefabricated road slabs. Poor capacity, prone to cracks on t...

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Problems solved by technology

[0003] However, because the prefabricated road slabs are independent of each other, they need to be combined by overlapping or embedding during the on-site installation process. After the combination is completed, operations such as grouting and fixing are performed. However, the above combination methods have load transfer between prefabricated road slabs. Poor capacity, prone to cracks on the road surface, etc. Although the prefabricated road slabs in the prior art transmit force through force transmission mechanisms such as dowel bars, the force transmission effect is still unsatisfactory, so tensioned steel bars are usually used on this basis Prestressing is applied so that the tensile area of ​​the road surface is subjected to compressive stress in advance to offset part of the tensile stress caused by vehicle load and temperature changes, so that the tensile strength between the prefabricated road slabs is improved, thereby improving the bending and tensile strength of the road surface. However, the existing steps of applying prestress by tensioning steel bars are cumbersome, which reduces the construction efficiency. At the same time, only longitudinal prestress can be applied by tensioning steel bars, and there is no good solution to the lateral load caused by vehicle turning or changing direction. method, resulting in the misalignment of two adjacent prefabricated road slabs

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