摘要
对一种新型盘销式钢管支撑架结构力学性能进行了较为系统的研究,包括盘销节点连接可靠性、插销抗拔承载力、水平杆与立杆连接节点刚度、基本受力单元体受力性能。研究结果表明:盘销连接节点具有可靠性;楔形设计的插销具有自锁功能,在正常工作中插销不会自动向上滑出;水平杆与立杆连接节点为半刚性连接,通过试验分析测得了节点刚度系数;开展基本受力单元体受力性能研究得出了不同构造条件下的支撑架破坏形式和极限承载力,通过对比确定了斜撑布置情况、支架顶部悬臂长度、立杆步距对支撑架结构力学性能的影响情况。
A series of studies were performed on pin-disk type steel tube support frame, including the reliability of pin-disk joint, the pullout force of pin, the horizontal and standing rod joint stiffness, the mechanical property of basic unit.The research results indicate that pin-disk joint is reliable to ensure the supporting frame’s safety.The designed wedge pin has self-locking function, and it will not slide automatically in the normal working state.The horizontal and standing rod connection is a semi-rigid joint, the joint stiffness coefficient was measured through experimental analysis.The supporting frame failure mode and ultimate bearing capacity were obtained through the mechanical property study on basic unit.The influence of brace layout, cantilever length on the top of the supporting frame and pole step on the mechanical properties of supporting frame was determined by contrast.
出处
《工业建筑》
CSCD
北大核心
2014年第10期140-145,175,共7页
Industrial Construction
关键词
盘销节点
支撑架
力学性能
试验
pin-disk joint
supporting frame
mechanical property
test
