锚锭板分布对加劲桩锚固体受力与变形的作用分析

The Effect Analysis of Anchor Plate Distribution on the Stress and Deformation of Reinforced Soil-cement Pile Anchorage body

在软土边坡及深基坑工程中,加劲桩对控制土坡变形和稳定性的作用比常规的锚杆(索)有更多优势,加劲桩的锚固力主要依靠锚固体与周围土体之间的摩阻力提供。利用Mindlin位移解导出加劲桩加筋体黏结段受力的理论解,通过抗拔力传递过程中,加筋体与锚锭板对水泥土锚固体接触应力分布的变化,分析多个锚锭板对加劲桩承载力和变形量的影响,建立了锚锭板分布对加劲桩抗拔承载力的定量作用,并经现场试验验证。

In the soft soil slope and deep excavations, reinforced soil -cement piles have more advantages than the regular bolt （ca- ble） in controlling the deformation and stable of the slope. The anchoring force of the reinforced soil - cement piles is mainly from the friction between the anchorage bodies and the soil. Mindlin displacement solution is used to elicit the theoretic value of force in the bonding section of the stiffness body. Then, the stress distribution changes among stiffness bodies and anchor plates and soil - cement anchorage bodies is used to analyze the influence of bearing capacity and deformation from the several anchoring plates on reinforced soil - cement piles through the transfer process of the pullout force. This structure has been proved from the field test.