【摘要】 青岛援建四川北川陈家坝地区震后过渡安置房采用装配式轻钢结构临建房屋。该临建房屋为冷弯薄壁型钢结构体系,桁架杆件之间采用无节点板直接焊接的连接形式,具有制作简单,自重轻,安装方便,可拆卸重复利用,施工周期短,结构受力可靠,抗震能力强等技术特点。针对这种连接形式研究了桁架杆件承载力及次应力的分布和影响。分析结果表明:援建的临建房屋结构具有足够的安全性能,采用无节点板连接的钢桁架,由于杆件几何偏心的影响,进行内力分析时应考虑次应力的不利影响。更多还原

【Abstract】 Post-earthquake transitional housings which built in Chenjiaba District,Beichuan County,Sichuan Province aided by Qingdao are light steel structure assembled housings.For which cold-formed thin-wall steel structure system is used and jointless plates with direct welding connection are also used between truss members and are characterised by simple production,light weight,easy installation,convenient disassembly and reuse,short construction period,reliable structure force and strong seismic ability.It is analysed bearing capacity of truss members and the distribution and effect of the secondary stresses.The results show that transitional housing placements structure has adequate security.The adverse effects of secondary stress due to node geometric flaw to steel truss without node plate connections should be considered when internal force is analysed.更多还原