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High performance aseismatic bridge pier structure system with replaceable plastic hinge

A high-performance, plastic hinge technology, used in bridges, bridge parts, bridge construction, etc., can solve the problems of difficult post-earthquake repair, insufficient seismic capacity of the plastic hinge area, etc., to avoid severe fracture, good ductility, and good bending resistance. The effect of stiffness

Pending Publication Date: 2019-11-19
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of insufficient seismic capacity of the plastic hinge area of ​​the bridge pier and the difficulty of post-earthquake repair, and to provide a high-performance seismic-resistant bridge pier structure system with replaceable plastic hinges

Method used

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  • High performance aseismatic bridge pier structure system with replaceable plastic hinge
  • High performance aseismatic bridge pier structure system with replaceable plastic hinge
  • High performance aseismatic bridge pier structure system with replaceable plastic hinge

Examples

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Embodiment approach

[0048] like Figure 11 As shown, a replaceable plastic hinge is set in the single-column pier structure, a replaceable plastic hinge section 2 is set on the cap 1, a reinforced concrete pier section 3 is set on the replaceable plastic hinge section 2, and a reinforced concrete pier section 3 is provided with a cover beam 4, and the replaceable plastic hinge segment 2 has good bending rigidity, bearing capacity and energy dissipation capacity.

[0049] like Figure 12 As shown, a replaceable plastic hinge is set in the double-column pier structure, the replaceable plastic hinge section 2 is set on the cap 1, the reinforced concrete pier section 3 is set on the replaceable plastic hinge section 2, and the reinforced concrete pier section 3 is provided with a replaceable plastic hinge section 2, and the cover beam 4 is arranged on the replaceable plastic hinge section 2, and the upper and lower ends of the pier are provided with a replaceable plastic hinge section 2, which can b...

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Abstract

The invention discloses a high performance aseismatic bridge pier structure system with replaceable plastic hinge and belongs to the field of bridge engineering. The high performance aseismatic bridgepier structure system comprises a bearing platform, a replaceable plastic hinge section, a reinforced concrete bridge pier section and the like. A anchor bar and a connecting sleeve are pre-embeddedin the bearing platform; the replaceable plastic hinge section comprises a PVC pipe, a SMA bar and a high-strength steel bar, a stirrup, a high-ductility concrete, a lower connecting plate, an upper connecting plate and the like; and the reinforced concrete bridge pier section comprise a longitudinal bar, a stirrup, an ordinary concrete, a bottom connecting plate and the like. The bearing platformis connected with the lower connecting plate of the replaceable plastic hinge section through a high-strength bolt, and the upper connecting plate of the replaceable plastic hinge section is connected with the bottom connecting plate of the reinforced concrete bridge pier section through the high-strength bolt. The high performance aseismatic bridge pier structure system with replaceable plastichinge has better bending rigidity, bearing capacity and energy consumption capacity under normal use conditions and earthquake. The replaceable plastic hinge section can be easily replaced and repaired after the earthquake.

Description

technical field [0001] The invention relates to the field of bridge engineering, in particular to a high-performance anti-seismic pier structure system with replaceable plastic hinges. Background technique [0002] my country is an earthquake-prone country, located between the circum-Pacific seismic belt and the Eurasian seismic belt. As an important part of lifeline engineering, once a bridge is damaged by an earthquake, it will cause serious casualties and economic losses, and it will be difficult to repair. In addition, bridge damage will also lead to traffic interruption, affecting the development of disaster relief work after the earthquake, making it impossible for rescuers to arrive in time, and relief supplies cannot be delivered in time, thus aggravating the degree of secondary disasters caused by the earthquake. Therefore, the seismic performance of bridges has received special attention. [0003] At present, in the pier structure based on the ductile aseismic de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/02
CPCE01D19/02
Inventor 贾俊峰赵凌云白玉磊欧进萍孙治国
Owner BEIJING UNIV OF TECH
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