对于矢跨比较小的坦拱，矢高与截面回转半径的比值将决定拱的屈曲形式。
Secondary buckling mode of shallow arches depended on the ratio of rise to gyration radius.
分析了腹板高厚比、孔洞率以及单块腹板宽度对LHFB屈曲承载力的影响。
The influence of web plate height to thickness ratio, hole ratio and the width of a single web plate on the buckling capacity of LHFB was analyzed.
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