论文部分内容阅读
分析椭圆空心截面(EHS)构件弯曲时的侧向稳定性。对8根截面(高厚比为2)的无侧限EHS梁进行三点弯曲试验,并记录试件的试验设备、材料性质、截面几何形状、残余应力以及荷载、变形响应。使用数值模拟方法对试验数据进行补充,并依据试验结果验证其正确性。数值分析用于评估截面高厚比和构件长细比对侧向稳定性的影响。基于结构特性相关数据建立椭圆空心截面梁的侧向扭转屈曲曲线。提出限制长度以下时,侧向扭转屈曲(LTB)可不考虑。
Analysis of lateral stability of elliptical hollow section (EHS) members during bending. Three-point bending tests were conducted on eight unconfined EHS beams with a cross section of 2 (height to thickness ratio 2). The test equipment, material properties, cross-sectional geometry, residual stress and load and deformation responses were recorded. The numerical simulation method is used to supplement the test data and verify its correctness based on the test results. Numerical analysis is used to evaluate the effect of cross section height to thickness ratio and member slenderness ratio on lateral stability. Establishment of Lateral Torsional Buckling Curves of Ellipse Hollow Cross Section Beams Based on Structural Characteristic Data. Lateral torsional buckling (LTB) may not be considered when making the limit length below.