摘要
对西安咸阳国际机场二期扩建工程T3A航站主楼3根梭形柱进行1∶2缩尺破坏性稳定试验研究,分析轴压梭形钢管柱在一端固接、一端铰接约束下的稳定极限承载力,并探讨其破坏特性和机理。试验结果表明,其极限承载力达到设计荷载的2倍以上,满足设计要求。同时,采用有限元方法对试验进行模拟,并与试验得到的稳定极限承载力、破坏形状、荷载-位移曲线等进行对比,二者吻合较好。此外,基于有限元分析可知:试件长度比α增大,极限承载力提高;试件楔率γ增大,极限承载力降低;同时给出楔率γ与极限承载力Pu的拟合公式。
It was presented a model experimental study on the shuttle-shape columns for the main building of the phase Ⅱ expansion project T3A terminal of Xianyang International Airport. Three SXZ models with a scale of 1/2 were tested under axial loading until failure. Their ultimate load-carrying capacities and failure mechanism were obtained and observed. Its ultimate bearing capacity was greater than 2 times its designed load, which could meet the requirements for design of the column. The results of test were compared with those obtained by FEM involved in ultimate load-carrying capacities, destruction modes and the load-displacement curves, and a good agreement was observed between them. In addition, based on FE model, it was analysed the effect of taper ratio and length ratio on the ultimate bearing capacity, and the formula between γ and Pu was presented.
出处
《工业建筑》
CSCD
北大核心
2012年第12期81-85,共5页
Industrial Construction
关键词
梭形柱
缩尺试验
稳定极限承载力
楔率
长度比
shuttle-shape column
scale test
ultimate load-carrying capacity
taper ratio
length ratio
