岩土力学2013，Vol.34Issue(2)：519-525,545,8.
高速铁路穿透型CFG桩复合地基沉降计算修正系数分析
Research on settlement calculation empirical coefficient of end-bearing CFG pile composite foundation
摘要
Abstract
In order to adequately master settlement calculation empirical coefficient of CFG pile composite foundation under embankment load, an analysis is taken out based on foundation information, subgrade design parameters and settlement field test data of 24 sections in Wuhan-Guangzhou high-speed railway. Empirical coefficient of settlement calculation's variation and time effect features of settlement after construction are studied. The conclusions are as follows. Under embankment load, penetrating high-strength CFG pile composite foundation has outstanding deformation resistance, and its corresponding empirical coefficient changes between 0.63 and 0.17, which is lower than recommended value in Technical Code for Ground Treatment of Railway Engineering by 30 percent; foundation settlement shows a significant time effect features; and ratio of settlement after construction to final settlement decreases with time; the ratio of penetrating high-strength CFG pile composite foundation and time before stable of foundation settlement increases obviously with faster embankment filling rate and larger pile spacing.关键词
高速铁路/复合地基/穿透型CFG桩/沉降计算/修正系数Key words
high-speed railway/ composite foundation/ penetrating CFG pile/ settlement calculation/ empirical coefficient分类
建筑与水利引用本文复制引用
张敏静,罗强,詹学启,张良..高速铁路穿透型CFG桩复合地基沉降计算修正系数分析[J].岩土力学,2013,34(2):519-525,545,8.基金项目
国家973计划课题(No.2013CB036204) （No.2013CB036204）
中铁第四勘察设计院集团有限公司科技开发计划项目(No.200610) （No.200610）
中央高校基本科研业务费专项基金——科技创新项目(No.SWJTU11CX007). （No.SWJTU11CX007）
