高架桥爆破坍塌全过程数值模拟与分析
|
摘要
大型城市高架桥的爆破拆除工程必须有一个严密的爆破方案,数值模拟可为爆破方案的制订提供有力保障。针对某城市大型高架桥梁的爆破工程,利用LS-DYNA程序,计算分析了高架桥的爆破坍塌全过程,分析了爆破过程及爆破拆除引起的地面振动响应,并与最终的实测数据进行了对比分析。实测数据与计算数据吻合较好,表明该模拟方法能较好地考虑爆破全过程,可在今后类似工程的计算分析中参考使用。
A rigorous scheme should be taken in advance before a viaduct demolition,and the numerical simulation provided effective method to evaluate the scheme. Focused on the blasting engineering of a large-scale city viaduct,the whole process of initiation and collapse were simulated by the program LS-DYNA. The vibration responses of soil surface caused by the blasting and collapse slump touchdown were discussed,and the calculated results fitted the test data well,which was helpful to the design of similar blasting engineering in future.
A rigorous scheme should be taken in advance before a viaduct demolition,and the numerical simulation provided effective method to evaluate the scheme. Focused on the blasting engineering of a large-scale city viaduct,the whole process of initiation and collapse were simulated by the program LS-DYNA. The vibration responses of soil surface caused by the blasting and collapse slump touchdown were discussed,and the calculated results fitted the test data well,which was helpful to the design of similar blasting engineering in future.
引文
[1]张宪堂,王兆东,王洪立,等.爆破拆除烟囱倒塌过程中风效应影响研究[J].振动与冲击,2013,32(13):133-136.[1]ZHANG Xian-tang,WANG Zhao-jun,WANG Hong-li,et al.Influence of wind effects on collapsing process of a chimney in blasting[J].Journal of Vibration and Shock,2013,32(13):133-136.(in Chinese)
[2]赵周能.框架结构爆破拆除失稳判据的研究[D].南宁:广西大学,2005.[2]ZHAO Zhou-neng.Study on the instability criterion of blasting demolition about frame structure[D].Nanning:Guangxi University,2005.(in Chinese)
[3]罗浩.连续梁桥施工期爆破振动监测与分析[D].重庆:重庆交通大学,2013.[3]LUO Hao.Monitoring and analysis of constructing continuous girder bridge under blast vibration[D].Chongqing:Chongqing Jiaotong University,2013.(in Chinese)
[4]吕海军,龙源,廖昆,等.南京水西门高架桥爆破拆除及振动测试分析[J].工程爆破,2013,19(3):33-37.[4]LV Hai-jun,LONG Yuan,LIAO Kun,et al.Blasting demolition and vibration analysis of Shuiximen viaduct in Naijing[J].Blasting Engineering,2013,19(3):33-37.(in Chinese)
[5]REMENNIKIV A M.Modeling blast loads on buildings in complex city geometries[J].Computers and Structures,2005,83(7):2197-2205.
[6]胡菊.爆破地震波作用下连续刚构桥的动力响应研究[D].西安:长安大学.2007.[6]HU Ju.Study on the dynamical response of continuous rigid frame bridge by the blasting seismic wave[D].Xi'an:Chang'an University,2007.(in Chinese)
[7]徐泽沛.爆破拆除塌落过程及触地震动的分析研究[D].长沙:长沙理工大学,2004.[7]XU Ze-pei.Research of collapse course and ground vibration in demolishing building by blasting[D].Changsha:Changsha University of Science&Technology,2004.(in Chinese)
[8]蒋耀港,沈兆武,杨昌德.市内复杂环境下大药量爆破降振及振动监测分析的研究[J].振动与冲击,2012,31(1):156-161.[8]JIANG Yao-gang,SHEN Zha-wu,YANG Chang-de.Big charge blasting vibration damping and vibration monitoring analysis under intracity complicated environment[J].Journal of Vibration and Shock,2012,31(1):156-161.(in Chinese)
[2]赵周能.框架结构爆破拆除失稳判据的研究[D].南宁:广西大学,2005.[2]ZHAO Zhou-neng.Study on the instability criterion of blasting demolition about frame structure[D].Nanning:Guangxi University,2005.(in Chinese)
[3]罗浩.连续梁桥施工期爆破振动监测与分析[D].重庆:重庆交通大学,2013.[3]LUO Hao.Monitoring and analysis of constructing continuous girder bridge under blast vibration[D].Chongqing:Chongqing Jiaotong University,2013.(in Chinese)
[4]吕海军,龙源,廖昆,等.南京水西门高架桥爆破拆除及振动测试分析[J].工程爆破,2013,19(3):33-37.[4]LV Hai-jun,LONG Yuan,LIAO Kun,et al.Blasting demolition and vibration analysis of Shuiximen viaduct in Naijing[J].Blasting Engineering,2013,19(3):33-37.(in Chinese)
[5]REMENNIKIV A M.Modeling blast loads on buildings in complex city geometries[J].Computers and Structures,2005,83(7):2197-2205.
[6]胡菊.爆破地震波作用下连续刚构桥的动力响应研究[D].西安:长安大学.2007.[6]HU Ju.Study on the dynamical response of continuous rigid frame bridge by the blasting seismic wave[D].Xi'an:Chang'an University,2007.(in Chinese)
[7]徐泽沛.爆破拆除塌落过程及触地震动的分析研究[D].长沙:长沙理工大学,2004.[7]XU Ze-pei.Research of collapse course and ground vibration in demolishing building by blasting[D].Changsha:Changsha University of Science&Technology,2004.(in Chinese)
[8]蒋耀港,沈兆武,杨昌德.市内复杂环境下大药量爆破降振及振动监测分析的研究[J].振动与冲击,2012,31(1):156-161.[8]JIANG Yao-gang,SHEN Zha-wu,YANG Chang-de.Big charge blasting vibration damping and vibration monitoring analysis under intracity complicated environment[J].Journal of Vibration and Shock,2012,31(1):156-161.(in Chinese)
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