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根据分层地基上相邻刚性基础共同作用的分析方法 ,进一步提出了相邻桩箱基础共同作用的分析方法。计算中可考虑荷载偏心、基础埋深以及建筑物荷载重心高度对桩箱基础倾斜的影响。着重对某工程两个相邻桩箱基础共同作用产生的整体对倾和周围地基土中的竖向附加应力分布特点进行了研究。根据对倾实测结果推算 ,密集群桩的影响范围大致相当于L +rg (L、rg 分别为桩长和群桩基础等效圆面积的半径 ) ;受主楼附加应力扩散作用的影响 ,主楼与裙房之间的沉降差较小。
According to the analytical method of interaction of adjacent rigid foundations on layered soil, the analytical method of the interaction between adjacent pile foundations is further proposed. The calculation may consider the influence of load eccentricity, foundation depth and height of building load center on pile foundation inclination. Emphasis is placed on the overall countervailing effect caused by the interaction of two adjacent pile foundations of a project and the vertical additional stress distribution in the surrounding subsoil. According to the actual measured results, the influence range of the dense pile is roughly equivalent to L + rg (L, rg are the pile length and the radius of the equivalent circular area of the pile group foundation); influenced by the additional stress diffusion of the main building, Subsidence between the podium is small.