Comprehensive characteristics of L-type retaining wall in permafrost region of Qinghai-Tibet Railway
LIANG Bo1, GE Jian-jun2
1. School of Civil Engineering and Architecture, Chongqing Jiaotong University, Chongqing 400074, China; 2. First Railway Survey & Design Institute, Xi'an 710054, China
Abstract：Considering the characteristics of frost heaving and thawing of permafrost ， combining with the only supporting structure of L-type retaining wall used in the section from Golmud to Lhasa , Qinghai-Tibet Railway , the ground temperature, earth pressure and frost heaving forces and level deformation are tested. Due to the excavation and construction disturbance, the ground heat balance of the natural state is damaged. All the test indices are affected by cyclic ground temperature. But as an open project engineering structure, as long as there are no new disturbances, this balance is to gradually form a stable state, or to recover. In addition, the earth pressure and frozen-heave force should be revised by the actual deformation.
梁波, 葛建军. 青藏铁路多年冻土区L型挡土墙综合特性的试验研究[J]. 岩土工程学报, 2011, 33(zk1): 59-64.
LIANG Bo, GE Jian-jun. Comprehensive characteristics of L-type retaining wall in permafrost region of Qinghai-Tibet Railway. Chinese J. Geot. Eng., 2011, 33(zk1): 59-64.
[1] 丁靖康 . 水平冻胀力研究 [C]// 第二届全国冻土学术会议论文集 . 兰州 : 甘肃人民出版社 , 1983: 233 – 239. (DING Jing-kang. Research of horizonal frost-heaving force[C]// Proc of the 2th National Academic Conference on Pernafrost. Lanzhou : Gansu People Press , 1983 : 233 – 239. (in Chinese)) [2] 铁道第一勘察设计院 , 兰州交通大学 . 厚层地下冰段路桥涵关键技术的研究（北麓河） -L 型挡土墙试验研究阶段报告 [R]. 兰州 , 兰州交通大学 , 2007. (The First Railway Survey and Design Institute , Lanzhou Jiaotong University. Research of key techniques of bridges and culverts crossing thick underground ice regions(Beilu River)-report of experimental research of L-type retaining wall[R]. Lanzhou : Lanzhou Jiaotong University, 2007. (in Chinese)) [3] 常士骠 , 张苏民 . 工程地质手册 [M]. 第三版 . 北京 : 中国建筑工业出版社 , 1994. (CHANG Shi-biao, ZHANG Su-min. Engineering geology handbook[M]. 3rd ed. Beijing: China Architecture and Building Press, 1994.(in Chinese)) [4] JGJ118 — 98 冻土地区建筑地基基础设计规范 [S]. 1998. (JGJ118 — 98 Design standard of ground and foundation of building in permafrost regions[S]. 1998. (in Chinese)) [5] 梁 波 , 王家东 , 葛建军 , 等 . 青藏铁路 L 型挡土墙的土压力实测与分析 [J]. 岩土工程学报 , 2004, 26 (5): 627 – 631. (LIANG Bo, WANG Jia-dong, GE Jian-jun, et al. Testing and analysis of earth pressure about L-type retaining wall in Qinghai — Tibet railway[J]. Chinese Jounal of Geotechnical Engineering, 2004, 26 (5): 627 – 631. (in Chinese)) [6] 梁 波 , 王家东 , 曹元平 , 等 . 多年冻土区 L 型支挡结构的土压力修正模型 [J]. 土木工程学报 , 2005, 38 (3): 97 – 101. (LIANG Bo, WANG Jia-dong, CAO Yuan-ping, et al. A modified earth pressure model for the L-type retaining wall in permafrost regions[J]. China Civil Engineering Journal, 2005, 38 (3): 97 – 101. (in Chinese))
