Study on Soil Deformation Parameters Around Deep Pit by Large-Scale Physical Model Test

被引：0
|
作者：
Dou B. [1 ]
Zhang J. [2 ]
Yang Y. [3 ]
Niu X. [4 ]
机构：
[1] School of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing
[2] Beijing Oriental Earth Environmental Technology Co., Ltd., Beijing
[3] China Fortune Land Development, Nanjing
[4] Beijing Polytechnic College, School of Civil and Surveying Engineering, Beijing
来源：
Yingyong Jichu yu Gongcheng Kexue Xuebao/Journal of Basic Science and Engineering | 2019年 / 27卷 / 01期
关键词：
Model test; Physical simulation; Pit project; Similar theory; Slope project;
D O I：
10.16058/j.issn.1005-0930.2019.01.019
中图分类号：
学科分类号：
摘要：
The study of soil deformation parameters in foundation pit engineering plays an important role in the stability analysis of foundation pit engineering. Based on the theory and method of similarity theory, this paper takes the pit of CCTV main building as the test object and establishes a large-scale physical model test in which the size ratio of the model to the real main building is 1:10. Compared the physical simulation test results with the real measured data, it shows that large-scale physical model tests have higher accuracy in simulating soil deformation process excavated by foundation. The measurement of the maximum horizontal displacement of the model's top is about 0.32% of that of the excavation depth, and in the real condition the percentage is about 1.4%. The trend of passive earth pressure changing with the excavation depth is similar to that of the actual working situations and the actual values of these two conditions are close to each other. The results of the physical simulation are in good agreement with the results obtained from actual conditions and can provide evidence for actual pit construction. © 2019, The Editorial Board of Journal of Basic Science and Engineering. All right reserved.
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页码：216 / 225
页数：9
相关论文
共 25 条
  • [11] Li S., Li L., Li S., Et al., Development and application of similar physical model test system for water inrush of underground engineering, Journal of Mining and Safety Engineering, 27, 3, pp. 299-304, (2010)
  • [12] Zhang X., Yang K., Physical simulation of surrounding rock stress of roadway supported by anchored bolt with different coal-seam inclined angle, Coal Mining Technology, 19, 2, pp. 58-62, (2014)
  • [13] Lai X.P., Shan P.F., Cao J.T., Et al., Simulation of asymmetric destabilization of mine-void rock masses using a large 3D physical model, Rock Mechanics & Rock Engineering, 49, 2, pp. 487-502, (2016)
  • [14] Lai X.P., Shan P.F., Cai M.F., Et al., Comprehensive evaluation of high-steep slope stability and optimal high-steep slope design by 3D physical modeling, International Journal of Minerals Metallurgy and Materials, 22, 1, pp. 1-11, (2015)
  • [15] Lin Z., Xu W., Wang W., Et al., Determination of strength and deformation properties of columnar jointed rock mass using physical model tests, Ksce Journal of Civil Engineering, 7, pp. 1-10, (2018)
  • [16] Sun G., Lin S., Cheng S., Et al., Mechanisms of interaction between an arch dam and abutment slope using physical model tests, Rock Mechanics & Rock Engineering, 51, 8, pp. 2483-2504, (2018)
  • [17] Wu F., Cao P., Wan L., Similarity theory and its application in simulation experiments, Mining Technology, 7, 4, pp. 64-65, (2007)
  • [18] Li X., Lu Y., Kang Y., Et al., Rock Mechanics Experimental Simulation Technology, (2007)
  • [19] Xiang Z., Gu A., Simulation test study on the construction of Danhe stone arch bridge, Journal of Chongqing Jiaotong University, 20, 4, pp. 5-10, (2001)
  • [20] Bao T., Liu X., Shui Y., Under wave-induced the simulation test research on slope dynamic response, Port Technology, 4, pp. 1-3, (2004)
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