B03级加气混凝土复合板抗弯性能研究
|
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。
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 100 m in Beijing.
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 100 m in Beijing.
引文
[1] 孙雪涛, 王飞, 李翠翠. ALC墙板在框架剪力墙结构中的应用技术[J]. 青岛理工大学学报, 2013, 34(5):111-115.
[2] 陶有生, 府坤荣. 我国加气混凝土的发展与进步[J]. 新型建筑材料, 2003, 24(7):16-20.
[3] 蒋隆敏, 张毛心. 国内外关于钢丝网水泥砂浆用于RC结构加固的研究[J]. 世界地震工程, 2004, 20(2):139-144.
[4] 向荣.镀锌电焊网砂浆钢筋混凝土板的抗裂试验研究[D].广州:汕头大学,2010.
[5] 李俊喜. 钢丝挂网水泥砂浆的应用[J]. 甘肃水利水电技术, 2002, 38(1):39-40.
[6] MEHTAPK. Concrete microstructure, properties, and materials[M].3rd ed.NewYork:McGraw-Hill,2006.
[7] 陈博珊.蒸压加气混凝土板力学试验及数值模拟研究[D].北京:北京建筑大学,2016.
[8] 蒸压加气混凝土性能试验方法:GB/T 11969—2008 [S]. 北京:中国计划出版社,2008.
[9] 张国伟, 陈博珊, 苗启松,等. 加气混凝土墙板抗弯性能研究[J]. 建筑技术, 2016, 47(1):56-60.
[10] 张国伟,陈博珊,肖伟,等.蒸压加气混凝土外挂墙板受弯性能研究[J]. 建筑结构,2016,46(13):97-102.
[11] 混凝土结构试验方法标准:GB 50152—92 [S].北京:中国建筑工业出版社,1992.
[12] 过镇海.常温和高温下混凝土材料和构件的力学性能[M].北京:清华大学出版社,2006.
[13] 建筑结构荷载规范:GB 50009—2012 [S].北京:中国计划出版社,2012.
[14] 蒸压加气混凝土建筑应用技术规程:JGJ/T 17—2008 [S].北京:中国计划出版社,2008.
[2] 陶有生, 府坤荣. 我国加气混凝土的发展与进步[J]. 新型建筑材料, 2003, 24(7):16-20.
[3] 蒋隆敏, 张毛心. 国内外关于钢丝网水泥砂浆用于RC结构加固的研究[J]. 世界地震工程, 2004, 20(2):139-144.
[4] 向荣.镀锌电焊网砂浆钢筋混凝土板的抗裂试验研究[D].广州:汕头大学,2010.
[5] 李俊喜. 钢丝挂网水泥砂浆的应用[J]. 甘肃水利水电技术, 2002, 38(1):39-40.
[6] MEHTAPK. Concrete microstructure, properties, and materials[M].3rd ed.NewYork:McGraw-Hill,2006.
[7] 陈博珊.蒸压加气混凝土板力学试验及数值模拟研究[D].北京:北京建筑大学,2016.
[8] 蒸压加气混凝土性能试验方法:GB/T 11969—2008 [S]. 北京:中国计划出版社,2008.
[9] 张国伟, 陈博珊, 苗启松,等. 加气混凝土墙板抗弯性能研究[J]. 建筑技术, 2016, 47(1):56-60.
[10] 张国伟,陈博珊,肖伟,等.蒸压加气混凝土外挂墙板受弯性能研究[J]. 建筑结构,2016,46(13):97-102.
[11] 混凝土结构试验方法标准:GB 50152—92 [S].北京:中国建筑工业出版社,1992.
[12] 过镇海.常温和高温下混凝土材料和构件的力学性能[M].北京:清华大学出版社,2006.
[13] 建筑结构荷载规范:GB 50009—2012 [S].北京:中国计划出版社,2012.
[14] 蒸压加气混凝土建筑应用技术规程:JGJ/T 17—2008 [S].北京:中国计划出版社,2008.