Method for connecting trough-type base of steel trestle with embedded bolt in concrete bracket

Abstract

The invention relates to a method for connecting a trough-type base of a steel trestle with an embedded bolt in a concrete bracket, which belongs to the technical field of the construction method of the steel trestle. The invention aims to provide the method for connecting the trough-type base of the steel trestle with the embedded bolt in the concrete bracket, wherein the method is time-saving and safe, is low in cost and is capable of ensuring the construction quality. The technical scheme adopted by the invention is performed in the steps as follows: (1) welding to assemble sleeve sets; (2) fixing the sleeve sets; (3) embedding; (4) detailing and slotting; (5) hoisting in place; and (6) connecting and fixing. The method for connecting the trough-type base of the steel trestle with the embedded bolt in the concrete bracket is used for connecting a concrete bracket support with the base of the steel trestle when the steel trestle construction is performed.

Description

technical field [0001] The invention relates to a method for connecting a grooved base of a steel trestle bridge and a pre-embedded bolt in a concrete corbel, belonging to the technical field of construction methods of steel trestle bridges. Background technique [0002] The commonly used method for connecting the supports at both ends of the steel trestle is: to pre-embed and fix the exposed bolt group in the concrete corbel support to connect with the bolt holes of the trestle base correspondingly, but it is very difficult to achieve accurate positioning in the actual hoisting construction thing. Since there are four supports for each trestle span, each support is generally composed of four bolts and a pressure-bearing steel plate, that is, each steel trestle span is connected by sixteen bolts and sixteen screw holes correspondingly, which is very difficult in actual construction. It is difficult to meet the corresponding connection conditions, and there is often a method...

AI Technical Summary

Problems solved by technology

[0002] The commonly used method for connecting the supports at both ends of the steel trestle is: to pre-embed and fix the exposed bolt group in the concrete corbel support to connect with the bolt holes of the trestle base correspondingly, but it is very difficult to achieve accurate positioning in the actual hoisting construction thing

Since there are four supports for each trestle span, each support is generally composed of four bolts and a pressure-bearing steel plate, that is, each steel trestle span is connected by sixteen bolts and sixteen screw holes correspondingly, which is very difficult in actual construction. It is difficult to meet the corresponding connection conditions, and there is often a method of cutting off the obstructing bolts with a cutting torch. After the trestle is in place, arc welding is used to weld the base steel plate to the support steel plate. This method changes the nature of the hinge support originally designed. Under the action of temperature changes and loads, the concrete corbels and columns of the bracket produce bending moments and horizontal thrusts, which add unfavorable factors to the normal use of the structure, and it is very time-consuming to actually put it in place, which is not safe and increases the cost of the crane

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