期刊论文

Field test and numerical simulation on mechanical behavior of red bed soil-rock embankment reinforced with gabion

中文

岩土力学

1000-7598

2016

37

1

156-165

10.16285/j.rsm.2016.01.019

国家自然科学基金资助项目（No.51308198） 湖南省教育厅资助科研项目（No.14B034） 湖南省交通科技项目（No.200612）

本校为第一机构

为掌握格宾网加筋红层软岩土石混填路堤的力学行为,通过加筋路堤现场测试研究路堤土压力、路堤内部潜在破裂面、格宾网筋材和石笼墙面变形等力学行为,并结合FLAC~(3D)数值模拟,分析格宾网加筋间距、加筋长度、地基土的压缩模量、强度指标及路堤填料压实度变化对其力学性状的影响。现场测试表明:格宾网拉应变沿路堤横断面非均匀分布,路堤内部潜在破裂面近似"改进双线段简化破裂面";石笼面墙在墙背平面内类似梁弯曲变形,在墙背平面外以向外鼓胀变形为主;墙后同一标高处填土竖直土压力呈非均匀分布;墙背实测水平土压力与墙高呈非线性关系,路堤填筑高度大于7.5 m时,墙背水平土压力接近朗肯主动土压力...

To understand the mechanical behaviours of red bed soil-rock embankment reinforced with gabion, field tests are conducted to obtain soil pressure, the deformations of gabion reinforcement and gabion wall and the potential internal fracture surface. Meanwhile, based on in-situ tests and FLAC3Dnumerical modelling, a comprehensive analysis is performed to investigate the effects of reinforcement spacing, reinforcement length, compression modulus, strength indicators of foundation soil and compaction of embankment fill on mechanical behaviours of the embankment. Field tests indicate that the tensi...