钢框架内嵌带竖缝钢筋混凝土剪力墙的补充计算和构造要求

对钢框架内嵌带竖缝钢筋混凝土剪力墙的设计方法进行了考察,提出了若干补充计算和构造措施以实现带竖缝钢筋混凝土剪力墙的设计思想。这些补充包括:(1)梁柱连接和梁腹板,应补充进行受剪强度计算;(2)当受剪强度不满足要求时建议增加带竖缝钢筋混凝土剪力墙和钢框架柱的抗剪件连接,这种构造同时方便了安装;(3)建议竖缝剪力墙和钢框架梁采用开竖向槽孔的高强度螺栓摩擦型连接,以实现带竖缝钢筋混凝土剪力墙不承受竖向荷载,只承受水平力的设计思路;(4)增加对钢框架梁腹板受到带竖缝钢筋混凝土剪力墙膨胀力挤压发生屈曲的设计验算;(5)对连接钢框架梁和带竖缝钢筋混凝土剪力墙的预埋件给出了设计公式;(6)建议参考《混凝土结构设计规范》(GB 50010—2002)对带竖缝钢筋混凝土剪力墙受剪承载力进行设计。

Supplementary rules and detailing of steel frame-reinforced concrete infill slit wall system

Following a review of the design method for slit reinforced concrete wall system,this paper proposes supplementary design rules and detailing requirements to implement the design philosophy of the slit wall.These supplementary rules includes the followings:(1) shear strength check needs to be added for the beam-column connection and beam web;(2) when the shear strength is not satisfied,an additional shear connection is recommended between the column and the slit wall,which also eases the installation;(3) slit holes are recommended in the connection between slit wall and the top beam to realize the design philosophy of slit wall for carrying horizontal load only;(4) check for buckling of web under concrete expansion force;(5) design of pre-embedded steel plate and shear connectors to transfer the shear force and the expansion force and their related eccentricity;(6) the shear strength check for the reinforced concrete slit wall based on the design procedure for beam-columns in "Code for design of reinforced concrete structures(GB 50010—2002)" is recommended instead of the currently specified method in "Technical specification for steel structure of tall building(JGJ 99—98)".