北京园博园回填土地基强夯振动效应测试研究
|
摘要
强夯是远离居民区进行地基加固处理的有效方法。依托北京园博园水质净化工程,对房渣土地基强夯加固的动力效应,以及强夯振动对周围结构及环境的影响开展分析研究。根据强夯加固地基的基本原理,设计现场强夯振动测试方案,并实施强夯效应的实时测试,获得地层土体质点振动速度与振动加速度的变化规律曲线,建立了强夯振动速度与速度传播距离间的关系,以此可方便获取强夯区建筑结构的安全距离,此研究方法及思路可为类似工程提供参考。
Dynamic compaction is an effective method to reinforcing foundation away from residential areas.Based on the water purification engineering of Beijing Garden& Flower EXPO Park,the dynamic effect of compaction consolidation on brick rubbish foundation,and influence of dynamic compaction vibration on the surrounding structures and environment are analyzed in the paper.According to the basic principles of foundation consolidation by dynamic compaction,the authors design the testing scheme for dynamic compaction vibration,and carry out the real-time testing of dynamic compaction effect,moreover,the changing rule curve for vibration velocity and vibration acceleration of soil is obtained to establish the relationship between vibration velocity of dynamic compaction and velocity propagation distance,which can obtain easily the safe distance of buildings in dynamic compaction area.The research methods and ideas in this paper can provide a reference for similar projects.
Dynamic compaction is an effective method to reinforcing foundation away from residential areas.Based on the water purification engineering of Beijing Garden& Flower EXPO Park,the dynamic effect of compaction consolidation on brick rubbish foundation,and influence of dynamic compaction vibration on the surrounding structures and environment are analyzed in the paper.According to the basic principles of foundation consolidation by dynamic compaction,the authors design the testing scheme for dynamic compaction vibration,and carry out the real-time testing of dynamic compaction effect,moreover,the changing rule curve for vibration velocity and vibration acceleration of soil is obtained to establish the relationship between vibration velocity of dynamic compaction and velocity propagation distance,which can obtain easily the safe distance of buildings in dynamic compaction area.The research methods and ideas in this paper can provide a reference for similar projects.
引文
[1]何立军,水伟厚,刘波.强夯施工引起的环境振动监测分析[J].岩土工程界,2006,9(7):87-90.
[2]陆伟东,韩晓健,杨放.强夯施工环境振动影响的评价方法[J].南京工业大学学报,2002,24(5):65-68.
[3]谢能刚,宋修广.基于几何非线性的强夯加固机理分析[J].岩土工程学报,2003,25(4):472-474.
[4]水伟厚,王铁宏,朱建锋.高能级强夯作用下地面变形试验研究[J].港工技术,2006(2):50-52.
[5]周世良,王多垠,吴友仁.强夯处理高填方的大变形有限元数值模拟[J].应用力学学报,2008,25(1):89-93.
[6]蒋鹏,李荣强,孔德坊.强夯大变形冲击碰撞数值分析[J].岩土工程学报,2000,22(2):222-226.
[7]言志信,王永和,江平,王后裕.爆破地震测试及建筑结构安全标准研究[J].岩石力学与工程学报,2003,22(11):1907-1911.
[8]褚宏宪,史慧杰.强夯施工振动影响评价[J].地基基础工程,2004,7(11):78-80.
[9]GB6722—2011,爆破安全规程[S].
[2]陆伟东,韩晓健,杨放.强夯施工环境振动影响的评价方法[J].南京工业大学学报,2002,24(5):65-68.
[3]谢能刚,宋修广.基于几何非线性的强夯加固机理分析[J].岩土工程学报,2003,25(4):472-474.
[4]水伟厚,王铁宏,朱建锋.高能级强夯作用下地面变形试验研究[J].港工技术,2006(2):50-52.
[5]周世良,王多垠,吴友仁.强夯处理高填方的大变形有限元数值模拟[J].应用力学学报,2008,25(1):89-93.
[6]蒋鹏,李荣强,孔德坊.强夯大变形冲击碰撞数值分析[J].岩土工程学报,2000,22(2):222-226.
[7]言志信,王永和,江平,王后裕.爆破地震测试及建筑结构安全标准研究[J].岩石力学与工程学报,2003,22(11):1907-1911.
[8]褚宏宪,史慧杰.强夯施工振动影响评价[J].地基基础工程,2004,7(11):78-80.
[9]GB6722—2011,爆破安全规程[S].
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心