A detailed study about the application of in situ stress field in engineering slope has been carried out. To take the in situ stress into account in analysis of slope stability, the parent-model with coarse grids and sub-model with fine grids was established. In order to determine the in situ stress field of slope, the regional stress field calculated by stress regression method was converted to stress boundary of sub-model. The analysis of slope stability based on the in situ stress field is accurately to reflect the effect of natural factors.
Construction method - Deep-cutting valley - Deformation analysis - High rock slope - Jinping Hydropower Station - Load condition - Numerical results - Rock slope - Slope deformation
The mainly purpose of the paper is to investigate the slope excavation deformation of the rock slope at the deep-cutting valley under different load conditions. As an example of the rock slope at the intake of the sluice tunnel of Jinping hydropower station, whose slope deformation characteristics was system analyzed by numerical method during different construction conditions. The dead weight, rain, seism and theirs combination were involved in the numerical analysis. The numerical results could give a reference for the excavation stability of the high rock slope, and it is the basis to determine the reasonable construction method and to optimize the design of the strengthening and enhancing engineering.
[Zhou, Depei; Wang, Huanlong] Department of Geotechnical, School of Civil Engineering, Southwest Jiaotong University, Chengdu, 610031, China;[Jiang, Jieming] Guangyuan-Bazhong Expressway Project Construction Headquarters, Sichuan Provincial Communications Department, Guangyuan, 628000, China
2nd International Conference on Transportation Engineering, ICTE 2009
July 25, 2009 - July 27, 2009
(1) Department of Geotechnical, School of Civil Engineering, Southwest Jiaotong University, Chengdu, 610031, China; (2) Guangyuan-Bazhong Expressway Project Construction Headquarters, Sichuan Provincial Communications Department, Guangyuan, 628000, China
As a slope retaining structures of micropile unit, the micropiles may bear the axial pressure. The paper analyzes the stability of the compression micropile, and establishes the calculation model with the soil resistance. Then we get the ultimate bearing capacity formula using the ZHANG-Method that the distribution of subgrade resistance is constant. With the help of ANSYS buckling analysis, a finite element numerical model can be established. At last, through an example to make comparison to solutions of theory and numerical simulation, and provide useful conclusions. Copyright ASCE 2009.