A bridge pier structure and construction method combining prefabrication and cast-in-place

Abstract

The invention relates to a prefabricated and cast-in-place bridge pier structure and a construction method. The structure and the method relate to the technical field of bridge construction. The prefabricated and cast-in-place bridge pier structure comprises at least two prefabricated reinforced concrete outer shells and cast-in-place concrete; the prefabricated reinforced concrete outer shells are first manufactured in a factory in a centralized way; when the bridge pier structure is constructed, the prefabricated reinforced concrete outer shells which are manufactured are lifted to the design positions of bridge piers; then the at least two prefabricated reinforced concrete outer shells are connected; then the joints of the prefabricated reinforced concrete outer shells are sealed by cementing materials; finally cast-in-place concrete is cast in the prefabricated reinforced concrete outer shells which are connected, cured and formed. Due to the adoption of the prefabricated and cast-in-place bridge pier structure and the construction method, the bridge pier construction procedures are simplified, manpower, materials and equipment required for the construction are reduced, and the construction has higher quality, is safer and has higher efficiency.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a bridge pier structure combined with prefabrication and cast-in-place and a construction method. Background technique [0002] The existing bridge piers made of reinforced concrete basically use steel formwork, wooden formwork or combined formwork, and are constructed on-site by climbing formwork or turning formwork. During the construction process, steel bars must be bound, installed, adjusted, and replaced. , Dismantle and maintain the formwork. Although this method can satisfy the construction of bridge piers, it has the following defects: [0003] 1. The process is complicated, labor-intensive and time-consuming. The site involves the installation, adjustment, replacement, demolition and maintenance of steel bars and formwork. For projects with high requirements on the appearance of concrete, a large amount of post-concrete surface modification work is required...

AI Technical Summary

Problems solved by technology

[0004] 2. Large investment

For projects with a large number of bridge piers, heavy tasks, and tight construction schedules, more manpower, material resources, and equipment must be invested;

[0005] 3. Prone to quality problems

Using the existing technology will cause quality problems such as honeycomb, pockmarked surface, holes or exposed bars due to various reasons such as unclean formwork; in recent years, serious safety quality problems such as concrete expansion and explosion caused by various factors Accidents do happen

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