多层超高地下室外墙与基础设计计算方法

Design and Analysis of Exterior Wall and Foundation of Ultra-high Multi-storey Basement

多层超高地下室因埋深深、层高高,外墙上作用水压力和土压力荷载大,外墙底部弯矩等内力较小,常规的体系、截面外墙和基础难以满足承载需求,因此需要研究新的外墙和基础承载体系,确定合理的外墙弯矩等内力与基础之间的传递路径与分配形式。为解决外墙与基础之间复杂的内力传递与分配问题,该文提出了外墙-基础平衡体系的设计与计算方法,对设置外墙+基础+抗压+抗拔桩的结构体系的内力传递、平衡和分配路径进行了研究。研究发现,通过设置外墙+基础+抗压+抗拔桩的结构体系,外墙底部内力在外墙+基础+抗压+抗拔桩的结构体系内部实现了良好的分配、传递和平衡。

The ultra-high multi-storey basement has deep burial depth and great storey height,with great water pressure and earth pressure load on the exterior wall and small internal forces such as the bending moment of the outer wall bottom,so the conventional systems,cross-section exterior walls and foundations can hardly meet the bearing requirements,and it is necessary to study the new ones and determine a reasonable transmission path and distribution form between internal forces like the exterior wall bending moment and the foundation.In order to solve the complex internal force transmission and distribution issue between the exterior wall and the foundation,this paper proposed a design and calculation method for the exterior wall-foundation balance system and investigated the internal force transmission,balance and distribution paths of the structural system of"exterior wall+foundation+compression+uplift piles".The study found that through the structural system of"exterior wall+foundation+compression+uplift piles"the internal force at the exterior wall bottom achieved remarkable results in distribution,transmission and balance within this structural system.