（1 北京建筑大学 “工程结构与新材料”北京市高等学校工程研究中心， 北京 100044；2 北京市建筑设计研究院， 北京 100039）

［摘要］通过8块蒸压加气混凝土外挂墙板的抗弯试验，研究了蒸压加气混凝土外挂墙板的抗弯性能，对比分析了跨度和剪跨比对板材的刚度、延性和承载力的影响。试验结果表明，配筋为3-8的蒸压加气混凝土外挂墙板材可以满足北京地区高层建筑结构外挂墙板在正常使用极限状态下的抗风、抗震要求。四分点加载的6块蒸压加气混凝土外挂墙板最终的破坏形态以弯曲破坏为主，三分点加载的2块蒸压加气混凝土外挂墙板最终的破坏形态以剪切破坏为主。基于规范公式得到蒸压加气混凝土外挂墙板的设计承载力，其理论值与试验值比较吻合。

［关键词］蒸压加气混凝土; 抗弯性能; 外挂墙板； 设计承载力

中图分类号：TU522-3+2文献标识码：A文章编号：1002-848X(2016)13-0097-06

Research on the flexural behavior of autoclaved aerated concrete external panel

Zhang Guowei1, Chen Boshan1, Xiao Wei1, Miao Qisong2, Wu Hui1

（1 Beijing Higher Institution Engineering Research Center of Civil Engineering Structure and Renewable Material, Beijing University of Civil Engineering and Architecture, Beijing 100044, China; 2 Beijing Building Construction Research Institute Co., Ltd., Beijing 100039, China）

Abstract:The bending experiments on 8 autoclaved aerated concrete (AAC) external panels were conducted to study the flexural behavior of AAC external panels and  the influence of span and shear span ratio on the stiffness, ductility and bearing capacity of AAC slabs was compared and analyzed. The experimental results show that the AAC external panels with 3-8 reinforcement can meet the requires of wind load and seismic action of high-rise buildings under serviceability limit state in Beijing. The final failure pattern of 6 AAC external panels subjected to four-point loading can be defined as the flexural failure, while the final failure pattern of 2 AAC external panels subjected to three-point loading can be defined as the shear failure. The design bearing capacity of the AAC external panel was obtained based on code formulas and the theoretical value was in good agreement with the experimental value.

Keywords:autoclaved aerated concrete; flexural behavior; external panel; design bearing capacity

*科研基地建设-北京节能减排关键技术协同创新中心(2011协同创新中心)(2015年),北京市新型墙体材料专项基金支持项目(20130910)。

通讯作者：陈博珊，硕士研究生，Email:chenboshan@hotmail.com。