特高压直流输电线路抗地震液化措施设计  

Design on Earthquake Liquefaction Resistance Measures of UHV DC Transmission Line

作　　者：蒋锐 马玉龙[2] 郑帅帅[2] 黄兴 刘翔云 

机构地区：[1]西南电力设计院,成都610021 [2]国网山东省电力公司济南供电公司,济南250012

出　　处：《山东电力技术》2016年第5期53-56,65,共5页Shandong Electric Power

摘　　要：以内蒙古锡盟—江苏泰州±800kV特高压直流输电线路工程中某两基相邻塔位作为案例,对特高压直流输电线路抗地震液化措施的设计方法进行对比分析。对输电线路地震液化机理及抗地震液化措施进行总结,对案例在地震作用下的基础作用力采用振型分解反应谱法和时程分析法进行详细计算,结合地质条件和实际基础荷载进行技术多方案抗液化措施的经济性比较,推荐类似情况的特高压直流工程采用桩基础作为抗地震液化措施。Taking two adjacent tower sites of No.12 segment of ±800 UHV DC transmission line project from Ximeng to Taizhou as a design case, a detailed comparative analysis is conducted for design methods of earthquake liquefaction resistance measures of conventional UHV DC transmission line. The earthquake liquefaction mechanism and earthquake liquefaction resistance measures of transmission lines are summarized. The force on foundation under the action of earthquake is calculated detailedly by using vibration mode decomposition response spectrum method and time history analysis method for the selected case.According to the economical comparison of diverse technical liquefaction resistance measures considered with specified geological conditions and the actual load of foundation, the pile foundation is recommended as an earthquake liquefaction measure in similar UHV DC transmission line projects.

关 键 词：特高压 直流输电 地震液化 桩基础 

分 类 号：TM726[电气工程—电力系统及自动化]