冷弯薄壁型钢组合墙体受剪性能研究综述

根据对冷弯薄壁型钢结构体系传力路径的分析，承受和传递水平、竖向荷载的组合墙体的受力性能对整个结构的抗震性能至关重要。按照从局部到整体的顺序，依次对国内外开展的墙体龙骨、墙面板连接件和组合墙体的抗震性能的研究进行综述。结合对国内外具有代表性的剪力墙受剪试验结果进行的统计分析，分别给出墙面板、墙面板连接件、钢龙骨框架、墙体高宽比、墙体开洞及加载类型对墙体受剪承载力的影响。部分墙体受剪试验结果与中国规范相应的设计参考值进行对比，指出按线性内插得到的由大间距连接件连接的墙体受剪承载力规范参考值趋保守。按照中国规范给出的抗力分项系数值进行可靠度计算，计算结果表明规范的设计参考值不能很好的符合目标可靠度为3.2的要求。按文献建议调整抗力分项系数后的计算结果与目标可靠度吻合良好，但应进行更多的研究寻求合理的抗力分项系数值。最后对该类结构体系抗震性能研究领域需要深入研究的问题提出了建议。

Literature review of shear performance of cold-formed thin-walled steel composite walls

Based on the force transfer path analysis, the composite shear wall plays a very important role in terms of sustaining and transferring horizontal and vertical loads. From component to system, a relatively comprehensive review of the studies at home and abroad on the seismic performances of wall studs, fasteners and the composite shear wall is presented. A statistical analysis was implemented mainly based on the data of typical shear resistance experimental results at home and abroad of cold-formed thin-walled steel composite shear walls, indicating how the sheathing boards, fasteners, steel frame, aspect ratio, opening size and loading regime make influence on the shear perofrmance of shear walls. Some experimental results were compared with the design guidance values of Chinese code finding that the design guidance values after linear interpolation make a conservative prediction of shear resistance with large spacing fasteners. The calculation of reliability index was made with the partial safety factor for resistance given in Chinese code, showing that the design guidance values of Chinese code can’t satisfy the objective reliability index 3.2. The recalculated reliability index with partial safety factor for resistance adjusted according to a reference’s recommendation are in good agreement with objective reliability index and there will be a lot of work remaining to do for a more appropriate value of partial safety factor for resistance. Some suggestions on the seismic performance research field of this kind of structures system are proposed.