portal frame meaning in English

门框状构架
门桥
门式钢架
门形机架
桥门构架；龙门架
桥门架；龙门架

The portal frames are joined at the top by a cross member .
在门形框架顶部使用一个横撑相连。
Mode discrimination of in - plane instability of portal frame
门式刚架平面内失稳类型的判别
Lightweight steel portal frame and its optimum web height
轻型门式刚架结构及其最优腹板高度的研究
Construction technology of the portal frame of unbondedly prestressed structure
无粘结预应力门式刚架施工工艺
Static and dynamic finite element spatial analysis of portal framed high pier in mountain area
山区门架式高墩的空间静动力分析

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