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Bridge falling prevention constraint damper

A restraint damping and fall prevention technology, which is applied in bridges, bridge parts, bridge construction, etc., can solve problems such as the ineffectiveness of shock absorbers and dampers, and achieve the effects of reducing secondary disasters caused by earthquakes, shortening the construction period, and reducing economic losses

Pending Publication Date: 2019-12-31
NANJING FORESTRY UNIV
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Problems solved by technology

[0006] In order to solve the above-mentioned technical problems that the above-mentioned general bridge shock absorbing dampers cannot effectively exert their effects under the action of strong earthquakes and reduce secondary disasters, the present invention provides a bridge fall prevention restraint that is easy to install and low in price during construction. damper

Method used

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Embodiment Construction

[0028] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0029] like Figure 1~2 As shown, a bridge fall prevention restraint damper is mainly composed of a fall prevention unit and a syringe-like energy dissipation unit

[0030] to make. The fixed unit includes the upper rotating fixed support 1, the lower rotating fixed support 2, the upper side limit steel cylinder 3, the upper connecting steel 4 and the lower connecting steel 5; the syringe-like energy consumption unit consists of a piston casing 8 and an oil chamber casing 13 welded structure, the piston jacket 8 contains the piston 7 and the fixed core rod 6, the fixed core rod 6 and the upper connection steel 4 are connected by threads; the piston jacket 8 is placed in the upper side limit steel cylinder 3, so that the damper Only linear recipro...

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Abstract

The invention discloses a bridge falling prevention constraint damper, and belongs to the technical field of structural damping. A main body comprises a fixing unit and a syringe-like energy consumption unit. When the damper is subjected to elongation deformation under the earthquake action in an acceptable range, a piston is forced to move, and at the moment, liquid in an oil cavity is pumped into a piston cavity to achieve the energy dissipation effect. When the damper is subjected to compression deformation under the earthquake action in the acceptable range, the piston is forced to move, and at the moment, the viscous liquid in the piston cavity is squeezed into the oil cavity to achieve the energy dissipation effect. When the damper bears excessively high earthquake action, the pistoncollides with the wall of the piston cavity, and at the moment, the structure is locked to achieve the effect of preventing a bridge from falling is achieved. The damper achieves the effective energydissipation effect under the condition of small displacement, the anti-falling effect is achieved through structure locking under the condition of large displacement, the damper is convenient to disassemble and disassemble after strong earthquakes, and rapid repair of the main body structure is facilitated.

Description

technical field [0001] The invention relates to the field of structure damping in civil engineering, in particular to a bridge fall prevention constraint damper. Background technique [0002] Earthquake is one of the main natural disasters that threaten the safety of major engineering structures. Therefore, structural shock absorption control has become an effective measure for disaster prevention and mitigation in civil engineering. [0003] With the development of my country's economy and the increasing innovation of various industries and neighborhoods, the technology of structural earthquake prevention and disaster reduction has developed rapidly. From the traditional simple relying on the damage of structural components to resist external unfavorable loads and foundation isolation measures, it is gradually shifting to passive energy consumption reduction. Vibration technology and the development of active, semi-active and intelligent control technologies. The structure ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/00
CPCE01D19/00
Inventor 苏毅李中义郭鹏卢伟张冲
Owner NANJING FORESTRY UNIV
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