（武汉理工大学土木工程与建筑学院， 武汉 430070）

［摘要］通过对现浇磷石膏填充墙RC框架结构进行数值模拟及模态分析，探究墙体布置形式、填充率等不同参数下，新型现浇磷石膏墙体对RC框架结构周期的影响规律。结果表明：墙体填充率25%～100%、墙体均匀分布时，磷石膏墙体模型周期折减系数大致介于0-436～0-749之间，随着填充率的提升，结构周期折减系数逐渐减小。填充率相同时，填充墙在结构底部均匀分布时对结构周期影响最大，中部次之，上部最弱。上述结论及时更新了磷石膏填充墙RC框架结构的周期折减系数研究，具有一定工程指导意义。

［关键词］现浇磷石膏墙； 填充率； 周期折减系数； 模态分析

中图分类号：TU375-4文献标识码：A文章编号：1002-848X(2019)15-0094-04

Study on period shortening factor of RC frame structures with cast-in-situ phosphogypsum filled wall

Dai Shaobin, Weng Wanlin, Huang Jun, Zhang Yichao, Cai Yue

(School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China)

Abstract:The numerical simulation and modal analysis of the RC frame structures with cast-in-situ phosphogypsum wall were performed to explore the influence of new cast-in-place phosphogypsum wall on the period of RC frame structures under different parameters such as wall layout and filling rate. The results indicate that when the walls are uniformly distributed and the filling rate of the walls is between 25% to 100%, the period shortening factor is between 0-436 to 0-749, and with the increase of the filling rate, the period shortening factor decreases gradually. When the filling rate of the walls is constant, the uniform distribution of the infill walls at the bottom of the structure has the greatest influence on the structural period, followed by the middle part and the upper part. The conclusions update the research about the period shortening factor of RC frame structures with cast-in-situ phosphogypsum wall in time and have certain guiding significance in engineering.

Keywords:cast-in-situ phosphogypsum wall; filling rate; period shortening factor; modal analysis