Prefabricated reinforced concrete side anti-collision guardrail connected with bridge, and construction method thereof

Abstract

The invention discloses a prefabricated reinforced concrete side anti-collision guardrail connected with a bridge, and a construction method thereof. The prefabricated reinforced concrete side anti-collision guardrail connected with the bridge comprises a guardrail body, angle steel, a check block fixed to the bridge surface of the bridge and an embedded part embedded in the bridge, and an embedded fixing groove is formed in the lower end of the guardrail body and connected to the check block in a clamped mode; connecting steel bars are arranged on the bottom surface between the embedded groove and the head-on collision surface of the guardrail and at the lower end of the head-on collision surface of the guardrail, and the connecting steel bars are welded to the two inner side surfaces ofthe angle steel; and the embedded part comprises a steel plate and bent embedded steel bars, the embedded steel bars are fixed in a bridge, the steel plate is fixed at the upper ends of the embedded steel bars, and the lower outer side face of the angle steel is welded to the steel plate. The connection strength between the guardrail and the bridge is improved, the whole guardrail is not prone tooverturning, meanwhile, the construction efficiency is high, the use of steel is reduced, and the purpose of saving resources is achieved.

Description

technical field [0001] The invention relates to the anti-collision barrier technology, in particular to an assembled reinforced concrete side anti-collision barrier for connecting bridges and a construction method thereof. Background technique [0002] Setting up anti-collision guardrails is the most effective protective measure to ensure the safety of driving on bridges. At the same time, anti-collision guardrails are an important part of bridges. Traditional reinforced concrete guardrails often use on-site steel bar binding and concrete cast-in-place construction. A large number of steel bars are transported 1. The processing operation is time-consuming and laborious, which increases the construction period and cost, and the construction quality is difficult to control. It is easy to cause the thickness of the protective layer of the guardrail reinforcement to fail to meet the specification requirements, resulting in cracking of the concrete surface and increasing the risk ...

AI Technical Summary

Problems solved by technology

[0010] Among the above methods, method 1 (embedded connection) is prone to overall overturning in practical applications, and the strength of this connection form has a great relationship with the size of the gap in the embedding groove. However, the size of the gap is difficult to control during construction. It is very likely that the safety performance of the guardrail will be affected due to large construction errors; in method 2 (bolt connection), the position of the bolt holes must be accurately aligned with the anchor bolts when the guardrail is hoisted, which is difficult to install, and stress concentration occurs at the bolt connection position, thus damaging the concrete ;Method 3 (grouting sleeve and anchor grout connection) requires very high installation accuracy of the sleeve, resulting in low installation efficiency; method 4 (reserved reinforcement anchor connection) requires a large cast-in-place space for the bridge deck, which is harmful to the construction party Large impact, resulting in increased cost of formwork; method 5 (bridge deck embedded steel plate connection) embedded parts are more cumbersome, have certain requirements for the installation accuracy of the sleeve, and the production cost is higher

Images