Method for rock-socketed depth of highway bridge piles in mountain areas
DAI Guo-liang1,2, DENG Hui-yuan2, GAO Lu-chao2, ZHU Ming-xing3, GONG Wei-ming1,2
1. Key Laboratory of Concrete and Prestressed Concrete Structure of Ministry of Education, Southeast University, Nanjing 210096, China; 2. School of Civil Engineering, Southeast University, Nanjing 210096, China; 3.China Energy Engineering Group Jiangsu Power Design Institute Co., Ltd., Nanjing 211100, China
Abstract：The rock-socketed pile is widely applied in the construction of highways in mountain areas, which has the characteristics of high stability and large bearing capacity. The rock-socketed depth plays a crucial role in the bearing characteristics of rock-socketed piles. A static equilibrium equation is established to obtain the computational model for the minimum rock-socketed depth in which the Hoek-Brown criterion is introduced, and it takes the combination of shear force and bending moment into consideration at the top of rock-socketed section. The feasibility of the proposed method is demonstrated in comparison with other methods, and it may have certain reference value to the design of rock-socketed piles. At the same time, the relationship between shear stress and normal stress of the quartic polynomial fitting rocks is verified to meet the requirements of accuracy and error.
戴国亮, 邓会元, 高鲁超, 竺明星, 龚维明. 山区公路桥梁基桩嵌岩深度计算方法研究[J]. 岩土工程学报, 2018, 40(S2): 225-229.
DAI Guo-liang, DENG Hui-yuan, GAO Lu-chao, ZHU Ming-xing, GONG Wei-ming. Method for rock-socketed depth of highway bridge piles in mountain areas. Chinese J. Geot. Eng., 2018, 40(S2): 225-229.
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