摘要
疏排桩–土钉墙组合支护是疏排桩与土钉墙组合形成的一种新型支护形式,是复合土钉墙发展的趋势之一。目前这一支护结构已在工程中应用,但对其的整体稳定性分析,目前尚未有统一的较好的理论分析方法。分别采用刘斌(2011)方法和有限元强度折减法计算疏排桩–土钉墙组合支护基坑的整体稳定性安全系数,并将两种方法的计算结果与离心机试验安全系数以及滑裂面位置进行对比分析。对比结果表明,采用刘斌(2011)方法计算得到的安全系数比强度折减法的计算值更接近于试验值,刘斌(2011)方法更适用于疏排桩–土钉墙组合支护的整体稳定性分析。
Scattered row pile-soil-nailing wall retaining structure is a new support form which combineds soil-nailing wall and sparse row piles. It's one of important directions of the composite soil-nailing wall. This new retaining structure is used in engineering practices, but a unified method is not available for analysis of its overall stability. The suitability of LIU Bin's method and the strength reduction method in calculating the overall stability safety factor is discussed based on the centrifugal model tests. The results indicate that LIU Bin's method is more suitable for the overall stability analysis of scattered pile-soil-nailing composite retaining system for foundation pits.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2014年第S2期82-86,共5页
Chinese Journal of Geotechnical Engineering
关键词
疏排桩
土钉墙
离心机试验
整体稳定
强度折减法
scattered pile
soil-nailing wall
centrifugal model test
overall stability
strength reduction method
