Construction method of prefabricated segment type pier

Abstract

The invention discloses a construction method of a prefabricated segment type pier. Firstly, prefabricating a positioning block, an upper segment and a lower segment; secondly, assembling the positioning block and the lower segment; the third step, assembling the positioning block and the upper segment; the fourth step, grouting; and the fifth step, installing annular stirrups on the periphery of an annular wing plate. Compared with the existing pier construction technology, the prefabricated pier segments can be prefabricated in a large scale and transported conveniently; as the size is smaller, large-scale lifting equipment is not needed; the prefabricated pier segments are connected by adopting the way of combining the body socket and spigot joint and the socket and spigot joint of a grouting casing pipe and stress column bar splices, the prestressed connection type is avoided, no additional temporary connection measures are needed, the structure is accurate in positioning and reliable in stress, the construction period is shortened, and the construction cost is lowered; and the perpendicularity of the prefabricated pier is guaranteed through the way of arranging the annular wing plate on the positioning block and the way of arranging spacers between the annular wing plate and the upper segment and between the annular wing plate and the lower segment.

Description

technical field [0001] The invention relates to the technical field of road and municipal bridge construction, in particular to a construction method of a prefabricated segmental bridge pier. Background technique [0002] In the construction of highways and municipal bridges, there are three common pier construction methods: the first is the in-situ pouring method: this method is a traditional pier construction method, which mainly includes the stages of binding the pier body steel skeleton, installing molds, concrete pouring and curing . The advantage is that the construction technology is relatively mature, and the disadvantage is that the construction period is long, the construction equipment and auxiliary facilities are repeatedly configured, the resource and energy consumption is large, and the financial and material resources are wasted. Especially in the construction of urban bridges, the ground road is used as a construction site for a long time. , The traffic and ...

AI Technical Summary

Problems solved by technology

This method has a short construction period and low requirements for construction machines and tools. However, the technology for prestressed construction of bridge piers is immature, the construction is difficult, and the cost is high. In addition, there are stability problems in the on-site assembly of bridge piers before the steel tendons are stretched. In addition, the seismic theory of prestressed bridge piers has not been fully perfected

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