Abstract:Research purposes: Combined with the deep foundation pit project of one railway station in Shenzhen,by doing indoor triaxial creep test,the time sensitivity of the foundation pit excavation and the negative influence on the surrounding building caused by the soil creep were fitted with numerical simulation method for purpose of researching the influence of soil creep characteristics on the stability of the exterior - protected construction for the foundation pit.
Research conclusions: Through numerical simulation of the typical section,the introduction was given mainly to the creep characteristics of the soil in Shenzhen area for providing the theoretical basis for the safe construction,protection of the surrounding environment and prediction of long - term creep. Before and after creep,the deformation of the supporting structure increased by 16% and the base settlement of the near building increased by about 21% . At the same time,the more usable calculation parameters for SSC model were obtained and it had the big reference value for the similar works.
王 坤. 深圳土体蠕变特性在深基坑工程中的应用[J]. 铁道工程学报, 2011, 28(8): 53-57.
WANG Kun. Application of Soil Creep Characteristics in Deep Foundation Pit Project in Shenzhen. 铁道工程学报, 2011, 28(8): 53-57.
Zhao Xufeng,Sun Jun. Inversion of Mechanical Parameters of Squeezing Soft Rock and Identification of Rheological Model [J]. Journal of Railway Engineering Society,2008( 5) : 5 - 9.
[4] 孙钧. 岩土材料流变力学及其工程应用[M]. 北京: 中国建筑工业出版社,1999.
Sun Jun. Rheological Behavior of Geomaterials and Its Engineering Applications [ M ]. Beijing: China Architecture and Building Press,1999.
[5] Borja R I,Kavaznjian E. A Constitutive Model for the Behaviour of Wet Clays[J]. Geotechnique,1985( 35) : 283 - 298.
Chen Xiaoping,Bai Shiwei. Research on Creep - Consolidation Characteristics and Calculating Model of Soft Soil[J]. Chinese Journal of Rock Mechanics and Engineering,2003( 5) : 728 - 734.
Zhu Hehua,Liu Xuezeng,Fu Deming. Viscoelastic Dynamic Incremental Back Analysis in Soft Soil Pit Foundation and Deformation Forcasting[J]. Rock and Soil Mechanics,2000( 4) : 381 - 384.