Segmental Prefabricated Assembled Swing Foundation Pier Construction Method

Abstract

The invention relates to a method for constructing a segmental prefabricating and assembling swing foundation pier. The pier is assembled by prefabricated segments, and a bearing platform is hinged to a foundation. Except for the uppermost end connected with a cover beam and the bottom end connected with the bearing platform, the middle segments of the pier are same in shape and size. The oblique section of the upper part of the middle pier prefabricated segment slopes and is hollowed into a groove, namely a prefabricated segment groove; the bottom of the middle pier prefabricated segment is manufactured into a bulge with a corresponding shape, namely a prefabricated segment convex slot; the prefabricated segment groove and the prefabricated segment convex slot can realize the assembly of upper and lower pier prefabricated segments and forms the contact connecting surface of the segmental pier. The bottom of the pier is fixedly connected with the bearing platform, and the upper part of the pier is fixedly connected with the cover beam. After the prefabricated segments are assembled, a prestressed cable in a prepared channel is tensioned and anchored. A gap between a pile head and the contact surface of a prepared hole in the bottom of the bearing platform is filled with a rubber material or other elastic materials. The method has the advantages of short construction period, small environmental influence, good vibration isolation effect under earthquake and high anti-seismic property of whole structure.

Description

technical field [0001] The invention relates to the technical field of bridge engineering construction and seismic isolation, in particular to a segmental prefabricated and assembled rocking foundation pier construction method. Background technique [0002] In the bridge structure, the bridge pier, as the main load-bearing member and the link between the upper and lower structures, has always been the focus of engineers. my country is in an earthquake-prone zone, and the earth is now in an active period of seismic activity. How to reduce the disasters caused by earthquakes has always been the purpose of research on earthquake resistance and disaster reduction. Several major earthquakes at home and abroad in recent years have also shown the damage of bridge projects. Serious consequences. [0003] In the traditional construction technology, the substructure such as bridge piers uses the integral cast-in-place construction method. Although the integral cast has good structural...

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Problems solved by technology

[0003] In the traditional construction technology, the substructure such as bridge piers uses the integral cast-in-place construction method. Although the integral cast has good structural integrity, the construction period is long, the construction conditions are high, and it also has adverse effects on the urban environment. Therefore, Industrialized segmental assembly construction technology emerges as the times require in bridge construction

Segmental assembly technology can speed up the pace of construction and adapt to more construction environments, but how to design the connection nodes of segmental prefabricated piers and how to ensure the overall seismic performance of the bridge are problems that need to be solved urgently

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