屠永清    （北京航空航天大学土木工程系  100083）

[提要]  将我国等截面门式刚架塑性设计方法与英国门式刚架的设计方法进行了比较和讨论，内容包括应用情况、内力计算、强度计算、塑性设计应满足的条件和整体稳定的计算方法等。通过比较和分析，对今后我国等截面门式刚架塑性设计方面进一步研究和发展提出了建议。
[关键词]  门式刚架  等截面  塑性设计

Plastic design methods of portal frames with constant section members of China and Great Britain are compared and discussed. It includes applications, internal force analyses, strength calculations, plastic design conditions, and overall frame stabilities. With the comparison and discussion, some problems that need further research in Chinese plastic design method of portal frames with constant section members are suggested.
Keywords:  portal frame; constant section; plastic design