长槽钢轴压构件缀板加劲效应的理论计算方法

针对槽钢插打容易引发弯曲失稳的问题，提出了一种沿槽钢设置缀板的构造措施，基于空间配位法提出了一种缀板加劲效应理论，并推导出带缀板槽钢轴压构件的整体稳定性计算方法，为工程中开口槽钢的局部加固优化设计提供了理论依据。算例证明，本方法能够有效量化缀板的位置效应和其自身的尺寸效应，对缀板的数量和板宽、布置方式和构件长度等因素进行稳定临界荷载的规律性分析，计算结果和规律基本合理，充分验证了实际工程的应用效果。

Theoretical Calculation Method for Stiffening Effect of Batten Plate of Long Channel Steel Axial Compression Members

Considering the problem that channel steel insertion is easy to cause bending instability, a structural measure of setting batten along the channel steel is proposed. Based on the spatial coordination method, a theory of the stiffening effect of the batten was proposed, and the overall stability calculation method of channel steel axial compression member with batten was deduced. It provides a theoretical basis for local reinforcement optimization design of open channel steel in engineering. Numerical examples show that this method can effectively quantify the position effect and size effect of the plate. The regularity of stable critical load of the number and width of the plate, arrangement mode and length of the member is analyzed. The calculated results are basically reasonable and verify the application effect of practical engineering.