特高压直流输电线路黄河大跨越基础选型及优化  

Towers Foundation Type Selection and Design Optimization of UHV DC Transmission Line Crossing the Yellow River

作　　者：张发[1] 张剑 王世龙 何桂明[1] 

机构地区：[1]山东电力工程咨询院有限公司,济南250013 [2]国网山东省电力公司临沂供电公司,山东临沂276000 [3]国网山东省电力公司检修公司,济南250118

出　　处：《山东电力技术》2016年第5期19-23,共5页Shandong Electric Power

摘　　要：根据工程水文、地质情况,对黄河大跨越段基础设计原则、方案比选、具体基础选型及优化进行研究,特别对大跨越基础优化措施进行了详细对比分析。结果表明,参照实测各层土的侧阻、端阻力可以适当减小桩长;建议塔位地基土的物理力学指标应参照相应塔位的试验结果;根据本工程试桩情况,宜采用PPG后注浆方式减小桩底沉降。According to the engineering hydrology and geological conditions, the design principle, scheme selection, type selection and optimization of the tower foundation for the long-span Crossing the Yellow River are studied, especially the detailed comparative analysis is done to the large span foundation optimization measures. Results show that the length of pile could be appropriately reduced refer to the side resistance and end resistance of each measured soil layer, the soil physical and mechanical indexes should be according to test results. Based on the test, a post-grouted PPG pile is recommended to reduce the pile settlement.

关 键 词：±800kV 特高压 直流 黄河大跨越 基础 

分 类 号：TM754[电气工程—电力系统及自动化]