冷弯薄壁型钢-泡沫混凝土组合墙体的承载性能研究  

BEARING CHARACTERISTIC RESEARCH OF COMPOSITE FOAM-CONCRETE WALLS REINFORCED WITH COLD-FORMED THIN-WALL SECTION STEEL

作　　者：李红现 刘殿忠[1] 武丝莹 LI Hongxian;LIU Dianzhong;WU Siying(College of Civil Engineering,Jilin Jianzhu University,Changchun 130118,China;The Eighth Engineering Bureau of China Construction Northwest Branch,Xi’an 710065,China)

机构地区：[1]吉林建筑大学土木工程学院,长春130118 [2]中建八局西北分公司,西安710065

出　　处：《工业建筑》2020年第10期160-169,共10页Industrial Construction

摘　　要：对不同冷弯薄壁型钢框架与泡沫混凝土构成的组合墙体PX-1、PX-2、PX-3、PX-4、PX-5、PX-6进行拟静力试验和有限元模拟,探讨不同型钢竖肢间距和泡沫混凝土密度下墙体的承载性能。试验与模拟结果表明:加载初期,墙体无明显的裂缝迹象,加载后期,墙体裂缝数量逐渐增加、裂缝宽度变大,此时墙体内部型钢骨架虽然仍具有较大的承载能力,但墙体整体抗剪和抗压性能有所降低;在型钢骨架竖肢间距及布置均相同的条件下,泡沫混凝土密度对墙体的轴向承载性能有较大的影响,且随着泡沫混凝土密度的增大,墙体的整体承载力也在提高,此种组合墙体具有良好的承载性能。The pseudo-static tests and simulations of six walls with different spacings frames vertical limbs and foam concrete densities PX-1,PX-2,PX-3,PX-4,PX-5 and PX-6 were finished up.The bearing performances of walls under different spacings of vevtical limbs and the densities of foam concrete were studied,the test and simulation results showed that:at the beginning of loading,the wall had no obvious sign of cracking.At the later stage of loading,the number of cracks on the wall gradually increased,the crack width became larger.At that time,although the internal steel frames of the wall still had a large bearing capacity,the overall shear and compression performances of the wall decreased.Under the condition that the spacing and layout of the steel frame were the same,the densities of the foam concrete had a greater impact on the axial bearing capacity performance of walls,and as densities of foam concrete increased,the overall bearing capacity of the wall also increased.The combined wall had good bearing performances.

关 键 词：型钢骨架 泡沫混凝土 含钢率 裂缝 抗剪承载力 

分 类 号：TU398.9[建筑科学—结构工程]