Reinforcement effects of ground treatment with dynamic
compaction replacement in cold and saline soil regions |
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| Authors: | Yu Zhang JianKun Liu JianHong Fang and AnHua Xu |
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| Institution: | Lanzhou Jiaotong University, Lanzhou, Gansu 730070, China;Beijing Jiaotong University, Beijing 100044, China;Qinghai Research Institute of Transportation, Xining, Qinghai 810001, China;Qinghai Research Institute of Transportation, Xining, Qinghai 810001, China |
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| Abstract: | The mechanical property of saline soils varies with moisture and climate in the cold and salt lake region of Qinghai-Tibet Plateau, which influences project construction. In order to improve foundation reinforcement effect of the Qarhan-Golmud Highway, Qinghai Province, China, dynamic compaction replacement (DCR) composite foundation was applied in saline soils. A field experiment was conducted in this area, where strength and working mechanism of pier-soil and deformation modulus of the composite foundation was analyzed after reinforcement. This paper presents methods for determining the coefficient on the bearing capacity evaluation and deformation modulus of composite foundation with DCR. Reinforcement case of DCR is highly effective in saline soils of the salt lake regions, which helps the migration of water and salt in saline soils. |
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| Keywords: | dynamic compaction replacement saline soils reinforcement effects |
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