To study the optimized design of the anti-slide caissons,this paper presents the case history of the Baiguoshu land-slide.Based on the soil arch effect and combined with the shear strength index of the soil behind the caisson,the optimized cais-son spacing of the anti-slide caisson is selected.Based on determining the caisson spacing,the mechanical analysis of the anti-slide caisson structure is carried out by using the the design bending moment of the positive section of the anti-slide caisson and the design shear force of the oblique section.The design optimization of the retaining structure is carried out,which shows that increasing of the cross-section of the anti-slide caisson can effectively reduce the amount of the longitudinal steel bars within a certain range,and on the premise of satisfying the estimation of the bending bearing capacity of the positive section of the anti-slide caisson,the height of the concrete compression zone is close to the height of the compression zone of the structural bound-ary as far as possible so that the compressive strength of the concrete can be fully utilized.
关键词
抗滑桩/桩间距/土拱效应/适筋梁/界限受压区高度
Key words
Anti-Slide Caisson/Caisson Spacing/Soil Arching Effect/Appropriately Reinforced Beam/Compression Zone Limits
维普
万方数据