沙漠土强夯施工的振动监测分析
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摘要
强夯技术加固地基具有经济、快速、高效等特点,在地基处理工程中得到广泛使用,但施工中产生的振动对周边环境影响较大,容易造成居民纠纷现象。针对同一场地沙漠土的1 000,2 000,3 000 kN.m能级强夯分别进行了不同距离的振动监测,监测强夯施工引起地面振动不同方向的加速度、速度、位移、PVS(峰值合速度)等,并对不同距离监测的振动波形进行对比分析,给出实测曲线,得出沙漠土低能级强夯施工振动的衰减规律以及隔振措施。
Dynamic compaction of Ground Improvement is significant,economic,easy to operate and convenient.It has been widely used in foundation treatment works.The vibration of dynamic compaction construction may easily give influence to the residents block.In this study,different distance vibration monitoring is carried out.Dynamic compaction includes energy level of 1 000,2 000,3 000 kN·m in same fields.The acceleration in different directions,speed,displacement,PVS of ground vibration caused by dynamic compaction is monitored.It is also compared the vibration waveform monitored from different distance.The paper shows a measured curve,puts forward a vibration transmission law of low-energy level dynamic compaction construction.
Dynamic compaction of Ground Improvement is significant,economic,easy to operate and convenient.It has been widely used in foundation treatment works.The vibration of dynamic compaction construction may easily give influence to the residents block.In this study,different distance vibration monitoring is carried out.Dynamic compaction includes energy level of 1 000,2 000,3 000 kN·m in same fields.The acceleration in different directions,speed,displacement,PVS of ground vibration caused by dynamic compaction is monitored.It is also compared the vibration waveform monitored from different distance.The paper shows a measured curve,puts forward a vibration transmission law of low-energy level dynamic compaction construction.
引文
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[3]程祖锋,李萍,谌会芹,等.某港口工程地基处理中的强夯振动效应研究[J].岩土力学,2004,25(5):740-744.
[4]詹金林,水伟厚,何立军.高能级强夯加固机理的数值模拟[J].水利水电科技进展,2008,28(6):15-19,27.
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[6]詹金林,水伟厚.强夯施工的环境振动监测研究[C]//自主创新与持续增长第十一届中国科协年会.重庆:2009.
[2]水伟厚,朱建锋.10 000 kN.m高能级强夯振动加速度实测分析[J].工业建筑,2006,36(1):37-39.
[3]程祖锋,李萍,谌会芹,等.某港口工程地基处理中的强夯振动效应研究[J].岩土力学,2004,25(5):740-744.
[4]詹金林,水伟厚,何立军.高能级强夯加固机理的数值模拟[J].水利水电科技进展,2008,28(6):15-19,27.
[5]水伟厚,何立军,詹金林.高能级强夯加固机理工法研究与专用机械研制[R].上海:上海现代建筑设计集团,2007.
[6]詹金林,水伟厚.强夯施工的环境振动监测研究[C]//自主创新与持续增长第十一届中国科协年会.重庆:2009.
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