| 双曲面球型减隔震支座的竖向位移分析 |
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| 引用本文： | 彭天波,李建中,范立础. 双曲面球型减隔震支座的竖向位移分析[J]. 同济大学学报(自然科学版), 2007, 35(9): 1181-1185 |
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| 作者姓名： | 彭天波 李建中 范立础 |
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| 作者单位： | 同济大学,桥梁工程系,上海,200092 |
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| 摘 要： | 介绍了双曲面球型减隔震支座的构造特点和工作机理,表明其能够满足减隔震支座的三个基本要求,并具有结构简单、抗震性能稳定可靠的优点.分析了在地震作用下该支座产生竖向位移的原因和影响因素,并通过试验验证了理论分析的结果.通过对一个2跨连续梁桥算例的非线性时程反应分析,表明此竖向位移对梁体的响应不会有很严重的影响,该支座完全可以满足连续梁桥的减隔震要求.
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| 关 键 词： | 双曲面球型减隔震支座 连续梁桥 减隔震 竖向位移 |
| 文章编号： | 0253-374X（2007）09-1181-05 |
| 修稿时间： | 2005-06-20 |
Analysis of Vertical Displacement of Double Spherical Aseismic Bearing |
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| PENG Tianbo,LI Jianzhong,FAN Lichu. Analysis of Vertical Displacement of Double Spherical Aseismic Bearing[J]. Journal of Tongji University(Natural Science), 2007, 35(9): 1181-1185 |
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| Authors: | PENG Tianbo LI Jianzhong FAN Lichu |
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| Affiliation: | Department of Bridge Engineering, TonRji University, Shanghai 200092, China |
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| Abstract: | The configuration characteristics and working mechanism of double spherical aseismic bearing are introduced first.The bearing can satisfy the three basic requirements for seismic isolation,and it also has the merit of compact configuration and reliable seismic performance.Then an analysis is made of the cause and influencing factors of the vertical displacement of the bearing and proved by experimental results.At last,a numerical analysis of a two-span continuous girder bridge is performed as an example to show that the bearing is suitable for the seismic design of continuous girder bridges. |
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| Keywords: | double spherical aseismic bearing continuous girder bridges seismic isolation vertical displacement |
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