CAJ | 학술논문

螺栓连接是塔身标准节之间连接的常用方式，其螺栓连接的可靠性关系到塔式起重机工作的稳定及安全，连接螺栓预紧力的变化可表现为塔身顶端位移的不同特征，文中以塔身顶端特征点位移为测量量，以高强螺栓预紧力引起的连接部位刚度变化为输入量，探究了塔身顶端位移与标准节连接螺栓预紧力之间的关系，得出了标准节连接高强螺栓预紧力变化的宏观表征-塔身顶端轨迹外接圆（其特征可表述为直径和圆心），绘制了螺栓连接刚度与塔身顶端轨迹外接圆直径和圆心的变化曲线，对塔身钢结构损伤检测具有指导意义。
라전련접시탑신표준절지간련접적상용방식，기라전련접적가고성관계도탑식기중궤공작적은정급안전，련접라전예긴력적변화가표현위탑신정단위이적불동특정，문중이탑신정단특정점위이위측량량，이고강라전예긴력인기적련접부위강도변화위수입량，탐구료탑신정단위이여표준절련접라전예긴력지간적관계，득출료표준절련접고강라전예긴력변화적굉관표정-탑신정단궤적외접원（기특정가표술위직경화원심），회제료라전련접강도여탑신정단궤적외접원직경화원심적변화곡선，대탑신강결구손상검측구유지도의의。
Bolt connection is a common method for connection between tower standard nodes,so bolting reliability has a direct bearing on work stability and safety of the tower crane.Changes in bolting pre-tension can assume different characteristics of tower top displacement.The study discusses relation between tower top displacement and bolting pre-ten-sion of standard nodes with the point displacement of the tower top as measurement,the rigidity change at the connection part caused by pre-tension of high-strength bolts as the input,in order to figure out the macro representation for pre-tension changes of high-strength bolts for connection of standard nodes-tower top trajectory circumcircle (expressed as the diameter and center of a circle),and draw the changing curve of the diameter and circle center for the trajectory circumcircle of bol-ting rigidity and tower top,providing guidance for damage detection of the tower steel structure.