考虑桩–土–结构动力相互作用的输电塔线体系简化抗震计算模型  

Simplified aseismic calculation model for transmission tower-line system considering pile-soil dynamic interaction

作　　者：李宏男[1] 徐静[1] 

机构地区：[1]大连理工大学土木水利学院,辽宁大连116023

出　　处：《岩土工程学报》2009年第11期1763-1767,共5页Chinese Journal of Geotechnical Engineering

基　　金：国家自然科学基金重点项目(50638010);国家自然科学基金面上项目(50708013);高等学校学科创新引智计划(B08014);教育部长江学者和创新团队发展计划(IRT0518)

摘　　要：提出了考虑桩–土–结构动力相互作用的输电塔线体系简化抗震计算模型。采用附加质量法对导线进行简化,用改进的集中质量模型来模拟输电塔下部结构,建立了桩–土–塔–线体系简化抗震计算模型。以一具体输电塔为例,在三种不同的场地条件下,分别采用本文的简化模型和文献[5]的整体模型对桩–土–塔–线体系在地震作用下的动力反应进行对比分析。结果表明,简化模型与整体模型的计算结果吻合较好,且可以大大提高计算效率,节省计算时间;在软弱、中硬场地,导线对塔体反应影响显著,不能忽略。有关研究成果可供工程设计参考。The simplified aseismic calculation model for transmission tower-line system considering pile-soil dynamic interaction is given. A simplified aseismic calculation model for pile-soil-transmission tower-line system is set up using the additional mass method and lumped mass model. Based on a transmission tower, the seismic response of the simplified model for pile-soil-transmission tower-line system is calculated and compared with the complete model suggested in Reference [5] under three different site conditions. It can be concluded that the results of the simplified model is in good agreement with of the complete model. Examples show that the method saves calculation time and promotes calculation efficiency greatly. It is also shown that lines have a significant effect on the dynamic response of the system on soft sites and medium sites. Results of the study can be applied as a reference for engineering design.

关 键 词：桩-土-结构动力相互作用 桩-土-塔-线体系 附加质量法 集中质量模型 动力反应 

分 类 号：TU435[建筑科学—岩土工程] P315[建筑科学—土工工程]