Construction method of water-damage-resistant reinforced protection structure of existing bridge bearing platform

Abstract

The invention relates to a construction method of a water-damage-resistant reinforced protection structure of an existing bridge bearing platform. The construction method comprises the following steps: (1) constructing a roughening structure on the side face of the existing bridge bearing platform; 2) mounting and fixing a prefabricated embedded stiffening core beam on the side surface of the existing bearing platform through a pull rod and a fastening nut; (3) installing a radial auxiliary drawing die system on the pier stud, and installing an auxiliary die supporting frame on the outer sideof the existing bearing platform; (4) installing a formwork of the outer wrapped concrete structure; (5) pouring concrete between the existing bearing platform and the formwork, and constructing an outer wrapped concrete structure; 6) constructing a rubble enclosure structure; and (7) arranging an integral steel wire mesh gabion protection foot on the outer side of the bottom end of the precast slab pile. The method has the beneficial effects that the embedded type stiffening core beam is of a prefabricated structure, and the strength of the outer wrapped concrete structure can be effectivelyimproved, so the reinforcing effect of an existing bearing platform is improved; and a guide type chiseling cutting device conducts rotary cutting along the existing pier stud, and a chiseling structure can be rapidly cut out on the surface of the existing pier stud.

Description

technical field [0001] The invention relates to the anti-water damage maintenance and reinforcement construction of active bridge caps in the fields of civil engineering and water conservancy, in particular to a construction method for anti-water damage reinforcement and protection structure of active bridge caps. Background technique [0002] With the continuous development of my country's transportation industry, the number of bridges built has gradually increased. Among the many diseases of active bridges, the diseases of bridge caps are particularly prominent. The bridge cap is usually set between the pile foundation and the pier column, and the load of the upper pier column is evenly transmitted to each pile foundation to ensure the balanced force. Therefore, how to effectively repair and strengthen the caps of active bridges will be related to the safe operation of active bridges. The maintenance and reinforcement of active bridge caps usually use outsourced concrete ...

AI Technical Summary

Problems solved by technology

The maintenance and reinforcement of active bridge caps usually use outsourced concrete or paste carbon fiber cloth construction methods, but the cost of carbon fiber cloth is relatively high, and the requirements for the working environment are high, so it is usually used in the maintenance of bridge pier columns and high pile caps Reinforcement is not suitable for low-pile caps with high requirements for anti-scouring; outsourcing concrete reinforcement methods are widely used in the maintenance and reinforcement of bridge caps, but there are problems such as incomplete bonding between outsourcing concrete and active caps, and poor anti-scourability And other issues

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