钢管混凝土束短肢剪力墙轴压承载力计算方法

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中图分类号：TU398.2 文献标志码：A 文章编号：1000-4939（2025）04-0808-13

Abstract：In this paper，the wall section is divided into the end，the middle，and the connecting part according to the constraint area to the concrete for I-shaped，L-shaped，T-shaped，and cross-shaped CFMST short-leg walls.Then a unified formula for calculating the axial compression capacity is proposed by introducing parameters related to the wall shape and unconstrained zone number.The average absolute errors between three groups of test data and the calculated results are 13.3% ， 13.2% and 12.1% ，respectively. Thefinite element simulation results also have a litle error compared to the test results，and the similar compression failure pattrns were obtained.So 48 groups of finite element models with different parameters including wallshapes，length-to-width ratio of single cavity，steel tube thickness，and cavity number were further established.The average absolute error between the finite element simulation results and calculation results is 6.9% . Parameter analyses show that the enhancement coefficient of axial compression capacity decreases with the increase of length-to-width ratio of single cavity，but increases obviously with the increase of steel tube thickness.Moreover，the increase of the number of cavities and the change of the wall shape also affct the axial compression capacity. Compared with other existing formulas，unified calculation method for axial compressive capacity of CFMST short-leg shear walls is reasonable and applicable，which can provide a theoretical basis for engineering design.

Key words ：short-leg shear wall； multicellular steel tube ； concrete； axial compression；bearing capacityformula; finite element analysis

装配式建筑是国家大力推行的新型建筑方式，将传统建造方式中的大量现场作业转移到工厂进行，施工现场只进行装配安装，具有经济、绿色、智慧、美观等特点。（剩余17574字）