不同类型支撑变形计算及其承载力比较
Calculation of Deformation of Different Types of Supports and Comparison of Their Load Carrying Capacity

本文通过理论研究，基于受压杆件轴向压缩理论和变形协调理论，得出水平角撑、水平对撑和水平斜撑三类基本支撑形式变形大小计算公式以及各类支撑对应围护结构变形解析解。从计算结果可知，支撑变形大小与支撑间距、支撑长度呈正相关，与支撑材料、支撑截面尺寸呈负相关；支撑承载力大小为水平角撑 > 水平对撑 > 水平斜撑，并进一步通过工程实例进行验证。本文所得结论可为工程提供一定参考，但实际选择支撑类型时，应结合具体工况和施工条件，在保证工程的安全下实现支撑选择最优解。
Through theoretical research, based on the theory of axial compression of compression rod and the theory of deformation coordination, this paper arrives at the formula for calculating the deformation size of the three types of basic support forms, namely, horizontal angle support, horizontal pair support and horizontal diagonal support, as well as the analytical solution of the deformation of each type of support corresponding to the enclosure structure. From the calculation results, it can be seen that the size of the support deformation is positively correlated with the support spacing and support length, and negatively correlated with the support material and support cross-section size. The support bearing capacity size is horizontal angle support > horizontal pair support > horizontal diagonal support, and it is further verified by engineering examples. The conclusions obtained in this paper can provide certain references for the project, but the actual selection of support type should be combined with specific working conditions and construction conditions, in order to ensure the safety of the project to achieve the optimal solution of support selection.