Comparison and Research of Unseating Prevention Measures in Seismic Codes of China and Foreign Countries

左烨; 孙广俊; 李鸿晶

doi:10.13409/j.cnki.jdpme.2016.04.016

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Comparison and Research of Unseating Prevention Measures in Seismic Codes of China and Foreign Countries

更新时间：2025-12-11

- Comparison and Research of Unseating Prevention Measures in Seismic Codes of China and Foreign Countries
- Vol. 36, Issue 4, Pages: 617-623+639(2016)
- 作者机构：
- 作者简介：
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- DOI：10.13409/j.cnki.jdpme.2016.04.016
  CLC： 442.55
- Published：2016
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[1]左烨,孙广俊,李鸿晶.中外桥梁抗震设计规范有关防落梁的比较与研究[J].防灾减灾工程学报,2016,36(04):617-623+639.

左烨, 孙广俊, 李鸿晶. Comparison and Research of Unseating Prevention Measures in Seismic Codes of China and Foreign Countries[J]. 2016, 36(4): 617-623+639.
[1]左烨,孙广俊,李鸿晶.中外桥梁抗震设计规范有关防落梁的比较与研究[J].防灾减灾工程学报,2016,36(04):617-623+639. DOI： 10.13409/j.cnki.jdpme.2016.04.016.

左烨, 孙广俊, 李鸿晶. Comparison and Research of Unseating Prevention Measures in Seismic Codes of China and Foreign Countries[J]. 2016, 36(4): 617-623+639. DOI： 10.13409/j.cnki.jdpme.2016.04.016.

摘要

对中外抗震设计规范中有关防落梁控制措施的规定进行阐述

并从梁端最小支承宽度、限位装置设计荷载及相关构造措施3个方面对各国规范进行对比分析

总结各国规范对于防落梁措施规定的优缺点

提出对我国规范中防落梁措施规定有益的建议。结果表明:美国、日本等国家防落梁系统研究较为成熟

目前大都采用静力或拟静力方法

易于工程设计实现

但忽略了结构自身振动特性影响;我国规范对于防落梁规定多为构造要求

需要进一步完善

满足实际工程要求。

Abstract

This paper illustrates the unseating prevention measures in seismic codes at home and abroad.Then

three aspects including minimum bearing width of beam end

design load of bridge spacing devices and construction measures are analyzed.At last

this paper summarizes advantages and disadvantages of unseating prevention measures in different countries’ seismic codes

and puts forward useful suggestions for unseating prevention measures in seismic code of our country.The analysis results show that（1）the unseating prevention systems in the United States and Japan are relatively mature

now mostly adopt the static or pseudo static method but ignore the influence of the structure vibration characteristics;（2）The unseating prevention measures in China’s codes are mostly construction measures

need to be further improved to meet the requirements of the practical engineering.

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references

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