基坑内支撑水平刚度计算的探讨

Inquiry on horizontal bearing stiffness in the foundation pit

为解决建筑基坑支护技术规程不能满足实际工程设计的需要,从刚度的基本定义出发,推导了平面对称问题和平面非对称问题两种情况下支撑水平刚度的计算公式,与基坑支护技术规范一致,提出了斜撑与对撑统一的支撑(包括对撑和斜撑)刚度计算公式,拓展了公式的适用范围,方便了工程设计。

In order to meet the actual project design needs for building foundation pit support technology, starting from the definition of stiffness, it induces the horizontal bearing stiffness calculation formula under two conditions of horizontal symmetrical issue and horizontal unsymmetrical is- sue, which conforms to foundation pit support technical norms. And then, it proposes the unification bearing stiffness calculation formula of inclined bearing and symmetrical bearing（ including inclined bearing and symmetrical bearing） , which not only widens the application scope of the formula, but also provides convenience for engineering design.