结构整体刚度在抗浮设计中的应用分析

Analysis of the Application of the Overall Structure Stiffness in Anti-floating Design

在结构抗浮设计中,除了与刚度无关的压重抗浮、利用结构之外的抗拔桩或抗浮锚杆刚度抗浮以外,在一定条件下,结构自身整体刚度可以在抗浮中发挥重要作用。在抗浮设计中,结构整体刚度是指多个主楼之间的地下室的整体刚度或多塔建筑之间裙房的整体刚度,其前提是包含主楼在内的整体建筑满足抗浮稳定性要求。结构整体刚度参与抗浮的形式为"结构整体刚度抗浮"和"结构内外刚度协同抗浮"。对利用结构整体刚度进行抗浮设计的前提条件、变形控制和内力控制原则进行了分析和确定,通过实例诠释了利用结构整体刚度进行抗浮设计的方法。"结构整体刚度抗浮"和"结构内外刚度协同抗浮"都符合力学原理,能够在保证结构安全的前提下,在抗浮设计中实现良好的经济性,并有利于减短工期,可以在有条件的工程中进行推广应用。

The overall structure stiffness can play an important role in anti-floating in addition to the weight, the uplift piles or anti-floating anchors, under certain conditions. The overall structure stiffness is refer to the stiffness between the main buildings, the premise is the whole buildings can meet the requirements of anti-floating stability. The application of the overall structure stiffness in anti-floating design involves ＂the overall stiffness of the structure＂ and ＂the internal and external stiffness of the structure＂. The prerequisite ,the deformation control and the internal force control of the overall structure stiffness in anti-floating design are analyzed and determined, and the design method is explained through the example. The anti-floating design method of ＂the overall stiffness of the structure＂ and ＂the internal and external stiffness of the structure＂ which is in line with the principle of mechanics can achieve good economic and is beneficial to schedule under the premise of ensuring the structure safety. This design method can be applied and extended when conditions are available.