Positioning support for dowel bars at concrete pavement joints

Abstract

The invention relates to the field of security protection construction of dowel bars at concrete pavement joints, in particular to a positioning support for the dowel bars at the concrete pavement joints. The positioning support solves the problem of accurate putting in place of the traditional dowel bars and comprises a positioning main bar, fixing bars, support legs and inverted hooks; the fixing bars comprise vertical sections which are vertical to the positioning main bar and are movably inserted in positioning holes of the positioning main bar; upper transverse sections which are vertical to the vertical sections and can be clamped and fixed with hook heads of the inverted hooks are fixed at the upper ends of the vertical sections, lower transverse sections which are vertical to the vertical sections and can be used for hooking steel bars of the dowel bars are fixed at the lower ends of the vertical sections, and reset springs which are clamped and fixed above the positioning main bar are sheathed on the vertical sections; the support legs comprise cross bars and vertical bars, wherein the cross bars are connected to the lower side of the positioning main bar, the vertical bars are fixed at two ends of the cross bars; and circular arc claws which are mutually matched and clamped with the steel bars of the dowel bars are arranged at the lower ends of the vertical bars. The positioning support has the advantages of simple structure, reasonable design, easy machining, firm construction, convenience in operation and repeatable utilization property, completely can meet the construction requirement, ensures the construction quality and improves the construction efficiency.

Description

technical field [0001] The invention relates to the field of security construction of dowel bars at concrete pavement joints in railway container yards, in particular to a dowel bar positioning bracket for concrete pavement joints. Background technique [0002] In the construction of concrete pavement, the joint is the weak part of the concrete slab, and the damage of the pavement generally starts from the damage of the joint. With the increase of the number of driving loads and the increase of heavy-duty and overloaded vehicles, the load-transmitting capacity of joints often decreases significantly in a short period of time, resulting in diseases such as mud pumping, misalignment, and broken plates. Therefore, the "Code for Design of Highway Cement Concrete Pavement" requires that each transverse shrinkage joint of heavy and extra-heavy traffic cement concrete pavement should be equipped with a dowel bar. [0003] The function of the dowel bar is to increase the stress tra...

AI Technical Summary

Problems solved by technology

[0010] In order to solve the problem of accurately placing the dowel bars at the concrete construction joints at present, the present invention provides a dowel bar positioning bracket for concrete pavement joints

Images