Study on the Vibration Response to Punched Pile Construction of
Bridge Pile Foundation

Journal of Chongqing Jiaotong University(Natural Science) ›› 2011, Vol. 30 ›› Issue (1): 35-38.

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Study on the Vibration Response to Punched Pile Construction of Bridge Pile Foundation

SHE Yan-hua^1,2，SU Hua-you^1,3，XIAO Zheng-xue¹，LIAN Wei-xin¹，ZHAO Yan¹，YANG Jun-gang¹

1. School of Environment ＆ Resources，Southwest University of Science ＆ Technology，Mianyang 621010，Sichuan，China; 2. China Academy of Engineering Physics，Mianyang 621900，Sichuan，China; 3. Key Laboratory for the Exploitation of Southwestern Resources ＆ Environmental Disaster Control Engineering of Ministry of Education，Chongqing University，Chongqing 400044，China

Received:2010-11-18 Revised:2010-12-08 Online:2011-02-15 Published:2015-01-22

桥梁桩基冲孔桩施工的微振动响应研究

佘艳华^1,2，苏华友^1,3，肖正学¹，练伟鑫¹，赵岩¹，杨君刚¹

1.西南科技大学环境与资源学院，四川绵阳 621010; 2.中国工程物理研究院，四川绵阳 621900; 3.重庆大学西南资源开发及环境灾害控制工程教育部重点实验室，重庆 400044

作者简介:佘艳华( 1982—) ，女，湖北公安人，博士研究生，主要从事岩土试验研究方面的工作。E-mail: syh916@126.com。
基金资助:
重庆大学西南资源开发及环境灾害控制工程教育部重点实验室访问学者基金资助项目( 20091230) ; 西南科技大学博士研究基金项目( 09zx7111)

Abstract

Abstract: The vibration response of punched pile construction of bridge pile foundation is studied and discussed for the first time，by use of the micro-seismic monitoring system，which is internationally advanced． Through the micro-seismic monitoring experiment on the construction site，wave data of loads acting on the construction is collected in group． Then the waveform of testing data is analyzed． According to the results，the weakening rules of vibration acceleration and energy are studied， and the effect of impact energy and pile depth on the vibration velocity is analyzed． Experiment results reveal that impact energy attenuates exponentially with the distance from the explosive center． Moreover，the vibration velocity of the same horizontal distance gradually decreases with increase of pile depth，and the attenuation amplitude is related to the geological conditions．

Key words: punched pile construction, micro-seismic monitoring, vibration response, propagation law

摘要： 运用微地震监测系统对桥梁桩基冲孔桩施工的微振动响应进行了研究与探索。通过在施工现场进行的微震试验，分组采集施工荷载作用下的波形数据，对试验的数据进行相关分析，研究冲孔桩施工引起的地表振动加速度和能量的衰减规律，分析冲击能和桩孔深度对振动速度的影响。试验结果表明: 冲孔桩施工时，岩土介质中冲击振动能量随传播距离的增加呈乘幂关系衰减; 随着桩孔深度的增加，同一水平距离的振动速度逐渐降低，其衰减幅度与桩孔一定深度的地质条件有关。

关键词: 冲孔桩施工, 微地震监测, 振动响应, 传播规律

CLC Number:

U 445.4

SHE Yan-hua，SU Hua-you，XIAO Zheng-xue，LIAN Wei-xin，ZHAO Yan，YANG Jun-gang. Study on the Vibration Response to Punched Pile Construction of Bridge Pile Foundation[J]. Journal of Chongqing Jiaotong University(Natural Science), 2011, 30(1): 35-38.

佘艳华，苏华友，肖正学，练伟鑫，赵岩，杨君刚. 桥梁桩基冲孔桩施工的微振动响应研究[J]. 重庆交通大学学报（自然科学版）, 2011, 30(1): 35-38.

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Study on the Vibration Response to Punched Pile Construction of Bridge Pile Foundation

桥梁桩基冲孔桩施工的微振动响应研究

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