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对冷弯型钢组合构件进行压缩试验,以确定比利时工程实践中的常用构件———双Z型钢柱的整体抗压性能。对8组4.45m的长柱进行全尺试验,并记录每个样本6个点处的平面外位移和应变。根据柱高中点处的线应变评估初始缺陷的影响。采用欧洲钢结构规范将所得到的极限性能和预测方法相结合。对预测分析中的假定以及规范中的差异进行了解释与探讨。由于范围受限,构件中的某些性能无法使用欧洲规范进行预测。还可使用北美规范进行冷弯型钢构件设计,其所提供的设计方法略有优势。提出了EN1993-1-3∶2006修正方法,以及基于直接强度法的设计方法。
The cold-formed steel composite component compression test to determine the Belgian engineering practice common components - double Z-steel column overall compressive properties. Eight sets of 4.45 m long columns were tested in full scale and out-of-plane displacements and strains at 6 points for each sample were recorded. The effect of initial defects was evaluated based on the line strain at the mid-column height. Using the European Steel Structure Code combines the resulting extreme performance with the predictive method. The assumptions in the forecasting analysis and the differences in the specifications are explained and discussed. Due to the limited range, certain properties of the component can not be predicted using European norms. North American norms can also be used for cold-formed steel member design, which provides a slight advantage of the design method. The correction method of EN1993-1-3: 2006 and the design method based on direct intensity method are proposed.