方形锚板联合板索基础极限上拔力研究

Study of ultimate uplift force on joint plate cable foundation of square anchor plate

针对现今使用的既抗压又抗拔基础存在的缺陷和不足,构建了联合板索基础并且获得了发明专利,该基础所受的上拔力由其锚板承担。采用理论和数值模拟相结合方法,对比研究了联合板索基础与扩底桩基础的抗拔机理,进而对比研究了联合板索基础与扩底桩基础所能承受的极限上拔力,并对比分析了方形与圆形锚板联合板索基础极限上拔力计算的等效规律,获得了方形锚板联合板索基础的极限上拔力计算的理论公式和抗拔稳定性验算公式,最后探讨了该基础形式的设计原则,为其推广应用提供了理论和技术支撑。

Focusing on the deficiencies of present widely used compression and pulling resistant foundation,a joint plate cable foundation was established and offered patent of invention.The uplift force upon the foundation was undertaken by its anchor plate.Combining theoretical analysis with numerical simulation,the anti-tensile mechanisms of the joint plate cable foundation and the belled pile foundation were comparatively studied.Moreover,the ultimate uplift forces that can be undertaken by the joint plate cable foundation and the belled pile foundation were comparatively studied.The equivalence laws in calculating the ultimate uplift force of the square anchor plate and the circular anchor plate in joint plate cable foundations were analyzed and compared.The theoretical equation of calculating the ultimate uplift force of the square anchor plate in joint plate cable foundation and the verification equation of the anti-pulling stability were obtained.Finally,the principle of designing such type of foundation was explored,which provides theoretical and technical support for the application of the foundation.