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针对双向增强体加筋软土路基作用特点,分析了筋材-桩-桩间土在路堤荷载作用下荷载传递机理.将一定厚度水平向加筋垫层视为具有一定刚度的薄板,基于大挠度薄板理论模拟筋材的挠曲变形,将单桩处理范围内的复合地基作为典型单元体进行分析,推导出桩土应力比的计算式,给出了计算方法.采用相关文献中的试验结果对计算方法进行了验证,并与文献中的计算结果进行比较分析.结果表明:采用给出的方法计算出的桩土应力比与实测结果比较接近,说明该计算方法是合理的,可为工程实践提供理论参考.
In view of the characteristics of the soft soil subgrade reinforced by biaxially reinforced body, the load transfer mechanism between the reinforcement, the pile and the piles under embankment load is analyzed, and the reinforced cushion with a certain thickness is regarded as a thin plate with a certain rigidity. Based on the large The deflection plate theory simulates the flexural deformation of the tendons, analyzes the composite foundation within the single pile processing range as a typical unit body, and deduces the calculation formula of pile-soil stress ratio, and gives the calculation method.Experimental results in related literatures The calculation method is verified and compared with the calculation results in the literature.The results show that the pile-soil stress ratio calculated by the proposed method is close to the measured result, which shows that the calculation method is reasonable and can be used in engineering Practice provides a theoretical reference.