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针对品字型抗滑桩在滑坡推力作用下的受力及变形特性这一问题,对1组顶部由连梁连接的3根圆形抗滑桩进行现场原位应力应变观测,同时,基于弹性地基梁理论,反算出钢筋混凝土抗滑桩位移和弯矩.结果表明:该滑坡滑动趋势缓慢,抗滑桩起到了阻止滑坡继续发展的作用;各桩所受弯矩均未超过其承载力设计值,表明抗滑桩处于安全工作状态;前后排桩对滑坡推力分担不均衡,设计中采用不同的截面尺寸及配筋率会使抗滑桩设计更加经济合理;连梁对桩的协调作用是有限的.
In order to solve the problem of the stress and deformation of the font-shaped anti-slide piles under the action of landslide thrust, a set of 3 circular anti-slide piles connected by a continuous beam at the top of the group was used to observe the stress and strain in situ. Meanwhile, The results show that the sliding tendency of the landslide is slow and the anti-slide piles play a role in preventing the landslides from continuing development. The bending moment of each pile does not exceed the design of the bearing capacity Value, indicating that the anti-slide pile in a safe working condition; before and after the row of piles on the landslide thrust imbalance in the design of the use of different cross-sectional dimensions and reinforcement ratio will make anti-slide pile design more economical and rational; limited.