强夯加固填土地基振动衰减规律研究
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摘要
针对某公司二期填方区地基处理项目,对试验场地进行强夯振动测试。在此基础上,分析强夯振动加速度、速度随测点距离之衰减关系;强夯能级、夯击数与测点振动加速度、速度之关系;评价隔振沟的作用;依据相应规范对试验场地划分振动影响区(振动易损区,基本安全区,安全区);并结合各建筑物地基基础及结构情况,提出强夯施工及加固建议。
The dynamic compaction is a common technology for ground treatment.Based on the tests on dynamic compaction vibration at test site of ground treatment project of a company's second stage filled area,the attenuation relation between acceleration of dynamic compaction vibration and measuring point distance is analyzed.While the attenuation relation between speed of dynamic compaction vibration and measuring point distance is also analyzed.The relation between level of dynamic compaction,vibration acceleration and speed at measuring points are studied.The relation between number of compacting,vibration acceleration and speed at measuring points are also studied.The roles of vibration isolation trenches are evaluated.The test site is divided into different vibration coverage zones(vibration vulnerable zone,basic safe zone,safe zone) according to corresponding standards.The grounds and structures of buildings are combined to put forward the proposals for construction and improvement of dynamic compaction.
The dynamic compaction is a common technology for ground treatment.Based on the tests on dynamic compaction vibration at test site of ground treatment project of a company's second stage filled area,the attenuation relation between acceleration of dynamic compaction vibration and measuring point distance is analyzed.While the attenuation relation between speed of dynamic compaction vibration and measuring point distance is also analyzed.The relation between level of dynamic compaction,vibration acceleration and speed at measuring points are studied.The relation between number of compacting,vibration acceleration and speed at measuring points are also studied.The roles of vibration isolation trenches are evaluated.The test site is divided into different vibration coverage zones(vibration vulnerable zone,basic safe zone,safe zone) according to corresponding standards.The grounds and structures of buildings are combined to put forward the proposals for construction and improvement of dynamic compaction.
引文
[1]顾晓鲁.地基与基础[M].第3版.北京:中国建筑工业出版社,2003.(GU Xiao-lu.Ground and foundation[M].3rd ed.Beijing:China Building Industry Press,2003.(in Chinese))
[2]李福民,孙勇.强夯加固地基振动影响的试验研究[J].东南大学学报(自然科学版),2002,32(5):809–812.(LIFu-ming,SUN Yong.Experimental research on the influenceof vibration during improvement of the ground with dynamiccompaction[J].Journal of Southeast University(NaturalScience Edition),2002,32(5):809–812.(in Chinese))
[3]杨龙才,王炳龙.强夯施工对环境振动的影响分析[J].华东交通大学学报,2007,24(2):16–20.(YANG Long-cai,WANG Bing-long.Analysis for the environmental vibrationeffects caused by dynamic compaction[J].Journal of EastChina Jiaotong University,2007,24(2):16–20.(in Chinese))
[4]倪永军,滕忻利,张雪峰,等.强夯地振动统计分析与评价[J].北京交通大学学报,2008,32(4):78–82.(NI Yong-jun,TENG Xin-li,ZHANG Xue-feng,et al.Statistical analysisand assessment of ground vibration due to dynamiccompaction[J].Journal of Beijing Jiaotong University,2008,32(4):78–82.(in Chinese))
[5]张喜荣,楚锟,李栋.强夯施工对周围建筑的影响分析[J].公路,2009,24(2):16–20.(ZHANG Xi-rong,CHUKun,LI Dong.Analysis for the nearby buildings effectscaused by dynamic compaction[J].Highway,2009,24(2):16–20.(in Chinese))
[6]安惠泽,许兆义,冯瑞玲.某站场地基强夯振动影响范围研究[J].北京交通大学学报,2010,34(1):50–53.(AN Hui-ze,XU Zhao-yi,FENG Rui-ling.Study on the ground vibrationzone during dynamic compaction for site improvement of arailway station and yard ground[J].Journal of Beijing JiaotongUniversity,2010,34(1):50–53.(in Chinese))
[7]GB/T17742—2008中国地震烈度表[S].(GB/T17742—2008The Chinese seismic intensity scale[S].2008.(in Chinese))
[8]GB6722—2003爆破安全规程[S].2003.(GB6722—2003Safety regulatoins for blasting[S].2003.(in Chinese))
[2]李福民,孙勇.强夯加固地基振动影响的试验研究[J].东南大学学报(自然科学版),2002,32(5):809–812.(LIFu-ming,SUN Yong.Experimental research on the influenceof vibration during improvement of the ground with dynamiccompaction[J].Journal of Southeast University(NaturalScience Edition),2002,32(5):809–812.(in Chinese))
[3]杨龙才,王炳龙.强夯施工对环境振动的影响分析[J].华东交通大学学报,2007,24(2):16–20.(YANG Long-cai,WANG Bing-long.Analysis for the environmental vibrationeffects caused by dynamic compaction[J].Journal of EastChina Jiaotong University,2007,24(2):16–20.(in Chinese))
[4]倪永军,滕忻利,张雪峰,等.强夯地振动统计分析与评价[J].北京交通大学学报,2008,32(4):78–82.(NI Yong-jun,TENG Xin-li,ZHANG Xue-feng,et al.Statistical analysisand assessment of ground vibration due to dynamiccompaction[J].Journal of Beijing Jiaotong University,2008,32(4):78–82.(in Chinese))
[5]张喜荣,楚锟,李栋.强夯施工对周围建筑的影响分析[J].公路,2009,24(2):16–20.(ZHANG Xi-rong,CHUKun,LI Dong.Analysis for the nearby buildings effectscaused by dynamic compaction[J].Highway,2009,24(2):16–20.(in Chinese))
[6]安惠泽,许兆义,冯瑞玲.某站场地基强夯振动影响范围研究[J].北京交通大学学报,2010,34(1):50–53.(AN Hui-ze,XU Zhao-yi,FENG Rui-ling.Study on the ground vibrationzone during dynamic compaction for site improvement of arailway station and yard ground[J].Journal of Beijing JiaotongUniversity,2010,34(1):50–53.(in Chinese))
[7]GB/T17742—2008中国地震烈度表[S].(GB/T17742—2008The Chinese seismic intensity scale[S].2008.(in Chinese))
[8]GB6722—2003爆破安全规程[S].2003.(GB6722—2003Safety regulatoins for blasting[S].2003.(in Chinese))
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