The construction method of the separated seismic isolation support system for the bridge pier

Abstract

The invention discloses a split shock-isolation supporting system for pier and a construction method thereof. The split shock-isolation supporting system comprises two rows of supporting bases distributed on a constructed bridge pier in the longitudinal direction of a bridge in a symmetric mode, and each row of the supporting bases includes a basin type rubber supporting base and two lead core shock-isolation rubber supporting bases symmetrically distributed on the left side and on the right side of the basin type rubber supporting base respectively. A bearing platform on the top of the pier is provided with six supporting base padstones used for installation of the basin type rubber supporting bases and the lead core shock-isolation rubber supporting bases. Grouting layers are arranged between the basin type rubber supporting bases and the supporting base padstones and between the lead core shock-isolation rubber supporting bases and the supporting base padstones. The construction method includes the steps of measuring and paying off, installing the supporting bases, supporting dies, grouting and maintaining. The method is simple in step, reasonable in design and convenient to achieve, practical value is high, and the fact that the supporting bases bear vertical load together in the operation process is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of construction of shock-absorbing and isolating bearings for bridge piers, and in particular relates to a construction method for a separate type of shock-absorbing and isolating support systems for bridge piers. Background technique [0002] There are several types of prestressed concrete tied arch bridges, including bottom-through, middle-through, half-through-through and top-through. The bridge bearing is an important component connecting the upper and lower structures of the bridge, which reliably transmits the reaction force and deformation (including displacement and rotation angle) of the bridge superstructure to the bridge substructure. The mechanical properties and reliability of bridge bearings have a significant impact on the normal bearing and safety of bridges. With the development of science and technology, in order to ensure the normal service life of bridge bearings, in addition to adopting...

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Problems solved by technology

[0004] The traditional seismic design of structures relies on increasing the strength and deformation capacity of the structure itself to resist earthquakes. Although the collapse of the structure can be prevented by properly selecting the location of the plastic hinge and the design of the detailed structure, the structural damage of the structural object is inevitable.

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