（1 北京建筑大学，北京未来城市设计高精尖创新中心， 北京 100044； 2 北京市建筑设计研究院有限公司， 北京 100045；3 北京市金隅加气混凝土有限责任公司， 北京 102402; 4北京泰华美邦科技有限责任公司， 北京100076）

［摘要］为研究B03级加气混凝土复合板的抗弯性能，对两块B03级加气混凝土复合板和两块B03级加气混凝土板进行四分点弯曲试验。试验结果表明，B03级加气混凝土复合板较普通B03级加气混凝土板的抗弯性能得到较大改善，开裂荷载提高约1-3倍，极限承载力提高约2倍，开裂前抗弯刚度提高约2-2倍。基于普通加气混凝土承载力公式计算了B03级加气混凝土板及其复合板的抗裂荷载和极限承载力，与试验结果相比，理论计算结果较为保守，表明两种类型的板材均具有一定的安全储备。B03级加气混凝土复合板的开裂荷载实测值和理论值均能满足北京地区100m以下高层居住建筑围护结构的抗风设计要求。

［关键词］加气混凝土； 复合板； 抗弯承载力

中图分类号：TU377-1文献标识码：A文章编号：1002-848X(2018)22-0067-05

Flexural behavior study of composite B03-grade autoclaved aerated concrete slabs

Zhang Guowei1, Gu Lei1, Miao Qisong2, Lu Qinggang2, Yang Yunfeng3, Zheng Quan4

(1 Beijing University of Civil Engineering and Architecture, Beijing Advanced Innovation Center for Future Urban Design,    Beijing 100044,  China;2 Beijing Institute of Architectural Design， Beijing 100045, China; 3 Beijing BBMG Autoclaved Aerated Concrete Co., Ltd.,  Beijing 102402, China;4 Beijing Tawiemeca Building Material Co., Ltd.,  Beijing 100076, China)

Abstract:In order to study the flexural behavior of composite B03-grade autoclaved aerated concrete（AAC） slabs, the quarter-point bending experiments of two composite B03-grade AAC slabs and two B03-grade AAC slabs were carried out. The experimental results show that the composite B03-grade AAC slabs have better flexural behavior than that of ordinary B03-grade AAC slabs. The cracking load is increased by about 1-3 times, and the ultimate bearing capacity is increased by about 2 times, and the bending rigidity is increased by 2-2 times before cracking. Based on the general bearing capacity formula for AAC, the crack resistance load and ultimate bearing capacity of composite B03-grade AAC slabs and B03-grade AAC slabs were calculated. Compared with the experimental results, the theoretical calculation results were conservative, indicating that both types of slabs had certain safety reserve. The measured and theoretical values of the cracking load of composite B03-grade AAC slabs can meet the wind-resistant design requirements of the envelope structure of high-rise residential building below 100m in Beijing.

Keywords:autoclaved aerated concrete; composite slab; flexural capacity

*北京未来城市设计高精尖创新中心（UDC2016030200），住房城乡建设部2015科学技术项目计划（2015K1 024)，北京建筑大学研究生创新项目。

作者简介：张国伟，博士，副教授，Email:zhangguowei@bucea.edu.cn。