论文部分内容阅读
将含裂纹偏心受压柱的柱子曲线(φ-λ曲线)按照破坏方式分为两类:屈服控制型和从屈服向断裂过渡的混合型。对于混合型含裂纹偏心核,提出了临界转变长细比λ0的概念,建立了用双参数准则(屈服准则和断裂准则)确定极限承载力的方法,并推出了相应的稳定系数的解析公式。还可以含Ⅰ型裂纹的箱型截面柱作算例,具体分析了裂纹、偏心距对φ-λ曲线的综合影响。
The column curve (φ-λ curve) containing an eccentric compression column with cracks is divided into two types according to failure modes: a yield control type and a hybrid type that transitions from yield to fracture. For the mixed type crack-containing eccentric core, the concept of the critical transition slenderness ratio λ0 is proposed. The method of determining the ultimate bearing capacity using the two-parameter criterion (yield criterion and fracture criterion) is established, and the analytical formula of the corresponding stability factor is introduced. It is also possible to use a box-section column with an I-type crack as an example to analyze the combined effect of crack and eccentricity on the φ-λ curve.