[1] Liu Wenjing, Li Li, Ye Kun,. Application of LRB isolation technology in continuous girder bridges [J]. Journal of Southeast University (English Edition), 2011, 27 (2): 196-200. [doi:10.3969/j.issn.1003-7985.2011.02.017]
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Application of LRB isolation technology in continuous girder bridges(
)
LRB隔震技术在连续梁桥中的应用
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 27
- Issue:
- 2011 2
- Page:
- 196-200
- Research Field:
- Civil Engineering
- Publishing date:
- 2011-06-30
Info
- Title:
- Application of LRB isolation technology in continuous girder bridges
- LRB隔震技术在连续梁桥中的应用
- Author(s):
- Liu Wenjing, Li Li, Ye Kun
- School of Civil Engineering and Mechanics, Huazhong University of Science and Technology, Wuhan 430074, China
Hubei Key Laboratory of Control Structure, Huazhong University of Science and Technology, Wuhan 430074, China
- PACS:
- TU352.12
- DOI:
- 10.3969/j.issn.1003-7985.2011.02.017
- Abstract:
- This paper summarizes the superiority of lead-rubber bearing(LRB)continuous girder bridges. The research method for isolation performance is discussed when pile-soil interaction is considered. By the finite element method and self-compiling program, a systematic study of the reliability of LRB continuous girder bridges is given by the use of different indicators, including the riding comfort of the LRB system, the pounding and dynamic stability when the LRB system is subjected to seismic excitations, and the reliability of the LRB system when subjected to other common horizontal loads. The results show that the LRB system has obvious advantages over the traditional continuous girder structure. The LRB isolation effect remains good even when pile-soil interaction is considered; the vertical rigidity of the LRB guarantees desirable riding comfort. The LRB demonstrates good reliability when subjected to the effects of braking, wind loads and temperature. However, it is also pointed out that the pounding of the LRB system subjected to earthquakes must be avoided, and the dynamic stability may be reduced when the LRB system has higher piers and generates a larger displacement in a strong earthquake. Useful advice and guidance are proposed for engineering application.
- 总结了LRB体系连续梁桥的优越性, 讨论了考虑桩-土共同作用时隔震性能的研究方法.采用有限元法, 自编程序, 系统地从行车舒适度、地震作用下的碰撞和动力稳定及其他常见水平荷载作用等方面分析了LRB体系连续梁桥的可靠性.结果表明, LRB体系较之传统的连续梁桥结构具有明显的优越性, 考虑桩-土共同作用时, 依然具有非常良好的隔震效果, LRB的竖向刚度保证了其行车舒适度不会降低, 在制动力、风荷载和温度作用下, LRB体系连续梁桥均表现了良好的可靠性, 但必须避免其地震作用下的碰撞, 墩较高、大震位移较大时, 其动力稳定性能会受到影响.研究成果为工程应用提供了有益的建议和指导.
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Memo
- Memo:
-
Biographies: Liu Wenjing(1983—), female, graduate; Li Li(corresponding author), female, professor, lili2431@163.com.
Foundation item: The National Natural Science Foundation of China(No.51008134).
Citation: Liu Wenjing, Li Li, Ye Kun.Application of LRB isolation technology in continuous girder bridges[J].Journal of Southeast University(English Edition), 2011, 27(2):196-200.[doi:10.3969/j.issn.1003-7985.2011.02.017]