h形抗滑桩布置方式的优化设计研究

目前对h形桩的布置形式优化设计研究较少且在实际中多按经验进行,鉴于此,文中以h形桩悬臂段长度及后排桩倾角变化为切入点,采用超静定结构算法和数值模拟相结合的方法,以某滑坡为工程依托开展h形桩的布置方式的研究。研究表明:排桩有一定悬臂段(h形桩)或前排桩有一定倾斜角度对整个桩身受荷段的受力情况改善明显;h形桩悬臂段长度的比值应控制在0.5~0.8;前排桩倾斜度控制在30°~45°时,h形桩的协调性更好,桩身更加稳固。

Research on Optimization Design of Arrangement of h-Type Anti-slide Pile

Through literature research,it is found that there are few studies on optimal design of h-shaped pile layout and most of them are designed according to experience in practical projects.In view of this situation,taking the length of cantilever section of h-type pile and the change of inclination angle of front-row pile as the breakthrough points,and combining with the method of statically indeterminate structure algorithm with numerical simulation,the layout of h-type pileis studied based on a landslide project.The results show that the stress of the whole pile body is obviously improved when the row piles have a certain cantilever section(h-shaped pile)or a certain inclination angle of the front row piles;the ratio of the cantilever section length of h-shaped pile should be controlled at about 0.5~0.8;when the inclination of the front row piles is controlled at 30~45 degrees,the coordination of h-shaped pile is better and the pile body is more stable.