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（武漢理工大學(xué)土木工程與建筑學(xué)院， 武漢 430070）

［摘要］通過(guò)對(duì)現(xiàn)澆磷石膏填充墻RC框架結(jié)構(gòu)進(jìn)行數(shù)值模擬及模態(tài)分析，探究墻體布置形式、填充率等不同參數(shù)下，新型現(xiàn)澆磷石膏墻體對(duì)RC框架結(jié)構(gòu)周期的影響規(guī)律。結(jié)果表明：墻體填充率25%～100%、墻體均勻分布時(shí)，磷石膏墻體模型周期折減系數(shù)大致介于0-436～0-749之間，隨著填充率的提升，結(jié)構(gòu)周期折減系數(shù)逐漸減小。填充率相同時(shí)，填充墻在結(jié)構(gòu)底部均勻分布時(shí)對(duì)結(jié)構(gòu)周期影響最大，中部次之，上部最弱。上述結(jié)論及時(shí)更新了磷石膏填充墻RC框架結(jié)構(gòu)的周期折減系數(shù)研究，具有一定工程指導(dǎo)意義。

［關(guān)鍵詞］現(xiàn)澆磷石膏墻； 填充率； 周期折減系數(shù)； 模態(tài)分析

中圖分類號(hào)：TU375-4文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：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