土岩深基坑桩-撑-锚组合支护体系变形特性
Deformation properties of combined support system of pile-steel support-anchor cable for deep foundation pit in rock-soil combination
摘要
Abstract
Based on the unique soil-rock combinational geological features of Qingdao, the cooperative effects and deformation laws of combined support system of fender pile-steel support-anchor cable for deep foundation pit in soil-rock combination were discussed through Plaxis finite element simulation and field monitoring. Meanwhile, the horizontal and ground displacement distribution was obtained by contrasting different support types; and the distribution laws of horizontal displacement, bending moment and shear force of the pile were analyzed by changing the excavation steps, and pre-stress of steel support and anchor cable. The results show that the calculated results agree well with the test results in deformation and ground settlement, while the main deformation occurs in soft soil strata in rocky area. The application of pile-support-anchor system is practical in Qingdao. The research results can provide reference for deep foundation pit supporting design in similar geological conditions.关键词
土岩组合/深基坑/组合支护体系/钢支撑/锚索/变形/有限元Key words
rock-soil combination/deep foundation pit/combined support system/steel support/anchor cable/deformation/finite element分类
建筑与水利引用本文复制引用
白晓宇,张明义,闫楠,王永洪,袁海洋..土岩深基坑桩-撑-锚组合支护体系变形特性[J].中南大学学报（自然科学版）,2018,49(2):454-463,10.基金项目
国家自然科学基金资助项目(51708316, 51778312) （51708316, 51778312）
山东省重点研发计划项目(2017GSF16107) （2017GSF16107）
山东省自然科学基金青年基金资助项目(ZR2016EEQ08, ZR2017PEE006) （ZR2016EEQ08, ZR2017PEE006）
山东省高等学校科技计划项目(J16LG02) （J16LG02）
青岛市应用基础研究计划项目(16-5-1-39-jch) (Projects(51708316, 51778312) supported by the National Natural Science Foundation of China （16-5-1-39-jch）
Project(2017GSF16107) supported by the Key Research and Development Program of Shandong Province （2017GSF16107）
Project(ZR2016EEQ08, ZR2017PEE006) supported by the Natural Science Youth Foundation of Shandong Province （ZR2016EEQ08, ZR2017PEE006）
Project(J16LG02) supported by the Higher Educational Science and Technology Program of Shandong Province （J16LG02）
Project(16-5-1-39-jch) supported by the Applied Basic Research Programs of Qingdao) （16-5-1-39-jch）
