钢筋混凝土框架顶部钢结构加层柱脚节点设计  

Column footing design of additional steel frame constructed on original reinforced concrete frame

作　　者：程河山 宋建学[1] 胡卫国[2] 

机构地区：[1]郑州大学土木工程学院,河南郑州450001 [2]郑州大学综合设计研究院,河南郑州450002

出　　处：《世界地震工程》2014年第2期223-228,共6页World Earthquake Engineering

摘　　要：结合商业中心实例,选用外包刚性柱脚连接法,并根据加层柱柱脚强度设计理论和构造要求,设计了具体的加层柱脚方案。下部既有框架采用圆形钢筋混凝土柱,直径为1000mm;加层采用钢结构框架,柱截面为450mm×450mm×16mm×16mm的正方形箱型截面。柱脚外包混凝土强度为C30级,高1400mm,厚182mm;每侧16个栓钉,直径19mm,长度165mm。柱脚底板为490mm×490mm,厚度45mm。柱脚锚栓直径30mm,锚固长度750mm。In combination with a practical commercial center project, a column footing design was carried out tobear the moment and shear force between additional constructed steel frame and the original reinforced concreteframe. The stiff wrap style column footing was chosen, and the key parameters and layout styles were determinedaccording to the stipulations of Chinese related code. The diameter of the original reinforced concrete frame is1000ram, and the additional constructed steel column is box-shaped, with section size of 450mm × 450mm × 16mm × 16mm. The wrapping concrete, C30,was designed as height of 1400ram and thickness of 182mm. On each sur-face of the footing,there are 16 bolts,with diameter of 19ram and length of 165mm. The bottom plate, 490mm ×490mm, with thickness of 45mm, bears the axial load. The diameter of bottom anchor is 30mm, with length of750mm.

关 键 词：土木建筑工程设计 加层设计 外包刚性柱脚连接 栓钉 

分 类 号：TU973.31[建筑科学—结构工程]