百色水电站进水塔抗震分析  

Aseismic analysis on intake tower of Beise Hydropower Station

作　　者：张柏成 李同春[2] 

机构地区：[1]浙江省城乡规划设计研究院,浙江杭州310007 [2]河海大学水利水电工程学院,江苏南京210098

出　　处：《水利水电科技进展》2004年第1期29-31,46,共4页Advances in Science and Technology of Water Resources

摘　　要：由于百色水电站进水口边坡地质条件复杂、有多条断层和裂隙、且地质风化严重,用协调的六面体单元考虑进水塔与地基相互作用的方法进行抗震分析非常困难.笔者提出对进水口边坡采用四节点四面体单元离散,进水塔采用八节点六面体单元离散的非一致网格协调位移解法来考虑进水塔和边坡之间的相互作用,在此基础上采用振型分解反应谱法对进水塔进行动力分析.计算表明,进水塔的强度和抗滑稳定性满足规范要求.Owing to the complex geological condition, serious geological weathering, and the existence of many faults and cracks in the side slope at the inlet of the Baise Hydropower Station, it is very difficult to describe the interaction between the intake tower and foundation with the compatible hexahedral element in the aseismic analysis. Hence a compatible displacement method of different meshes, in which the side slope at the inlet is discretized with four-node tetrahedral elements, while the intake tower is discretized with eight-node hexahedral elements, is proposed to describe the interaction. Based on this method, the mode-superposition response spectrum method is used for dynamic analysis of the intake tower. Calculation shows that the strength and the stability against sliding can meet the requirement of national codes.

关 键 词：进水塔 地基抗震 振型分解反应谱法 非一致网格协调位移解法 

分 类 号：TV312[水利工程—水工结构工程]