Affiliation: | College of Civil Engineering,Chongqing University,Chongqing 400045,P. R.China;College of Civil Engineering,Chongqing University,Chongqing 400045,P. R.China;School of Architecture and Civil Engineering,Xihua University,Chengdu 610039,P. R. China;The Key Laboratory of the Exploitation of Southwest Resource & the Environm ental Hazards Control Engineering,M inistry of Education,Chongqing University,Chongqing 4;College of Civil Engineering,Chongqing University,Chongqing 400045,P. R.China |