轻钢泡沫混凝土组合墙体偏心受压承载力计算研究  

Calculation study on eccentric compressive bearing capacity of light steel foam concrete combination wall

作　　者：王建超[1] 杨文涛 周静海[1] 潘常升 潘美旭 Wang Jianchao;Yang Wentao;Zhou Jinghai;Pan Changsheng;Pan Meixu(College of Civil Engineering,Shenyang Jianzhu University,Shenyang 110168,China;Liaoning Jijia Energy Saving Wall Equipment Corporation,Anshan 114051China)

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168 [2]辽宁集佳节能墙体装备有限公司,辽宁鞍山114051

出　　处：《建筑科学》2018年第11期56-60,共5页Building Science

基　　金："十二五"科技支撑计划资助项目(2013BAJ15B03);辽宁省教育厅资助项目(LJZ2017028);辽宁省科技厅资助项目(20180550696)

摘　　要：通过对5块轻钢泡沫混凝土组合墙体偏心受压承载力试验,分别对有无泡沫混凝土、有无拉条、自攻螺钉间距对立柱在偏心荷载作用下稳定承载力进行了研究。通过试验发现:内部填充泡沫混凝土后,轻钢立柱不再发生整体弯曲屈曲,只发生局部屈曲,中间立柱的极限承载力比空心墙体的可以提高81%;对于内部填充泡沫混凝土的组合墙体,以螺钉间距300mm为基准,螺钉间距为400mm的中间立柱极限承载力降低3.88%左右,螺钉间距为200mm的中间立柱极限承载力提高6.91%左右;拉条对中间立柱极限承载力提高1.55%。参考《冷弯薄壁型钢结构技术规范》,给出了不同参数下轻钢泡沫混凝土组合墙体在偏心受压条件下的计算长度建议值和偏心受压承载力计算公式。By the tests on the eccentric compressive bearing capacity of 5 lightweight steel foam concrete combination walls,the effects of the presence or absence of foamed concrete,the presence or absence of struts,and the distance between self-tapping screws on the stability bearing capacity of the stand column under eccentric loading are studied.Through experiments,it is found that after the interior of foamed concrete is filled,the overall 3.88%,and the ultimate capacity of the middle column with a screw spacing of 200mm is increased by about 6.91%.The ultimate capacity of the strip to the middle column is increased by 1.55%.By reference to Technical Specifications for Cold-formed and Thin-walled Steel Structures,the recommended value for the calculation length and the formula of the eccentric compression bearing capacity under the conditions of eccentric compression under different parameters about the light steel foam concrete combination wall are given.

关 键 词：泡沫混凝土 偏心受压 组合墙体 

分 类 号：TU398.9[建筑科学—结构工程]