基于有限元分析高压输电塔结构的地震反应-地震工程与工程振动.PDF

26 5 Vol. 26, No. 5 2006 10 EARTHQUAKE ENG INEERING AND ENG INEER ING VIBRATION Oct. 2006 : 1000-1301( 2006) 05- 0161- 06 1 2 1 朱碧蕾 , 胡文悌, 李春祥 ( 1. , 200072; 2. , 53002) : , , , , SAP2000, , , , , : ; ; SAP2000; ; ; : P315. 96 : A Estim ating seism ic respon ses of tran sm ission tow ers by fin ite elem en t m ethod 1 2 1 Zhu Bilei, Hu W enti, L iChunxiang ( 1. Departm ent ofC ivil Engineering, Shangha iU niversity, Shanghai 200072, China; 2. H enan X inxiang T ianfeng Steel Sheet Developm ent Co. Ltd. , X inxiang 53002, China) Abs tract: T ransm ission tow ers are mi portant lifeline systems. It is susceptible to environm ental loads, such asw ind loads and earthquakes. In the past few years, some transm ission tow ers have been dam aged or destroyed, thus lead- ing to great loss of people life and property. H igh accurate analysis thus is required to be performed for transm ission tow ers subjected to w ind loads or earthquakes. By using SAP2000 general softw are, a three-dmi ensional model is taken into account here to mi p lement the dynam ic analysis of transm ission towers under earthquakes. Employing different earthquake acceleration records, the influence of the stochastic behaviors of earthquakes on the structural seism ic responses has been investigated. Both the stress and the deformation of transm ission tow ers in seism ic re- gions have been computed to get an insight into the