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折线形腹板工字钢梁试验研究

, PP. 87-91

Keywords: 桥梁工程,折线形腹板钢梁,试验研究,腹板局部屈曲

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Abstract:

为研究一种新型波纹腹板钢梁——折线形腹板钢梁在静力荷载作用下的抗剪屈曲性能,完成了折线形腹板钢梁及在梁长四分点设置或不设置加劲肋的平腹板钢梁在跨中集中荷载作用下的静力试验,对其受力性能进行了分析,着重探讨了折线形钢腹板的屈曲性能、屈曲形式和屈曲后强度。试验研究表明,折线形钢腹板的相邻板件互为支承,弯折处很好地起到了加劲肋的作用,从而使折线形钢腹板的抗剪屈曲能力较一般的平直腹板有很大的提高。用折线形腹板钢梁来代替传统的平腹板钢梁可以使钢梁腹板的厚度减小,可以不设或少设间隔加劲肋,有明显的经济效益,值得进一步研究和推广。

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