Replaceable prefabricated shock-absorbing pier

A prefabricated and pier technology, applied in bridges, bridge parts, bridge materials, etc., can solve problems such as slow development, difficult accurate quantitative analysis, damper failure, etc., and achieve the effect of improving earthquake resistance, simple structure, and low cost
CN108914765AActive Publication Date: 2018-11-30SHIJIAZHUANG TIEDAO UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SHIJIAZHUANG TIEDAO UNIV
Publication Date
2018-11-30

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Abstract

The invention discloses a replaceable prefabricated shock-absorbing pier comprising telescopic unbonded prestressed steel strands, wherein one end of each telescopic unbonded prestressed steel strandis anchored to the top of a pier body and the other end of each telescopic unbonded prestressed steel strand is anchored to the end of a sliding block in a pile cap so as to be connected to a slidingdevice and assembling column blocks pre-buried in the pile cap. Under the action of small earthquakes and moderate earthquakes, in the rocking process of the prefabricated shock-absorbing pier, the unbonded prestressed steel strands can transform horizontal seismic displacement of a pier top into horizontal sliding of the sliding block in the pile cap and dissipate energy through friction so as tocontrol the deformation of the pier top of the prefabricated pier to be in a reasonable range. Adjusting bolts can adjust the vertical pressure between the sliding block and a friction surface so asto adjust the sliding friction force to adapt to shock-absorbing control requirements of prefabricated piers of different sizes. When a major earthquake occurs, position-limiting blocks at the ends ofthe sliding device in the pile cap can instantly lock the horizontal displacement of the sliding block so as to lock the horizontal displacement of the pier top to ensure that excessive horizontal displacement and collapse of the prefabricated pier can be avoided in the event of the major earthquake.
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Description

technical field

[0001] The invention relates to a bridge pier, in particular to a replaceable assembled shock-absorbing bridge pier, which belongs to the technical field of bridge anti-seismic and shock-absorbing control. Background technique

[0002] With the development of the economy and the advancement of science and technology, the degree of industrial production of commodities is getting higher and higher. In bridge construction, the pursuit of high efficiency, standardized production, fast installation, and the elimination of expensive formwork in deep valleys and waterways has promoted the development of prefabricated segment assembly technology. At present, the assembly technology of the upper structure of the bridge develops rapidly and is widely used, but the lower structure still adopts the method of pouring in situ, and the development is slow. One of the important reasons that affects the popularization and use of prefabricated piers is the lack of systematic u...

Claims

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