The portal frames , as a main form of low - rise industrial buildings , are generally composed of the tapered columns and beams with thin - walled webs that may undergo local buckling before global buckling of the frame occurs 门式刚架大多由变截面构件组成，且构件的腹板一般很薄，允许局部屈曲先于整体屈曲。
Portal frame of light steel structure is a common type of structure iii textile industry building , and many factors must be taken into consideration during its designing for its own characteristics 摘要门式刚架轻型钢结构是目前纺织工业厂房中一种常见的结构形式，由于纺织工业厂房自身的特点，在设计时须考虑很多因素。
For portal frame light steel structure building , it has been widely used with less consumption of steel and has obvious advantage on the period and applicability of the construction with comparison to the tradition 在轻型房屋钢结构体系中，门式刚架结构在施工周期、结构适用性上与传统建筑产品相比，具备明显的优势。
Eight different span lightweight steel portal frames are analyzed with a finite element method in the paper . 3d integer models are made to analyze the influence on internal force and displacement 采用有限元方法针对8种不同计算跨度的轻型门式刚架建立了三维整体有限元模型，分析了高强螺栓端板连接的节点刚度对门式刚架内力和位移的影响。
The stability bearing capacity of purlin was calculated by formulas of two criterion and some design manual . some comments on the design of purlin are proposed after comparing the results , including the investigation result of this paper 把试验和理论计算结果与门式刚架规程、澳洲冷弯型钢结构规范及设计手册的计算结果进行了比较。
The portal frame is the most widely used in the lightweight steel construction . when designing the portal frame , designers usually design the members with the variable cross - section on the base of the variation of the members " moment 在应用最广的轻型钢结构形式? ?门式刚架中，设计人员往往根据构件弯矩的变化规律，将门式刚架中的构件设计成变截面的形式。
The snap through buckling of gable portal frames are studied . and related factors concerned with snap through buckling of portal frames are presented and studied . and the character of snap through buckling of gable portal frames is got 对山形门式刚架发生跃越失稳的情况进行了研究,分析了门式刚架发生跃越失稳的一些相关因素,得到了山形门式刚架发生跃越失稳的一些特征。
The ansys finite element program is used to analysis the over - all stability of portal frames , with considering axial force , moment , and geometrical nonlinear effect . the the accurate effective length factors of gable portal frames are got 用ansys程序对山形门式刚架进行了整体稳定分析,通过考虑轴力、弯矩、和结构的几何非线性效应,得到了山形门式刚架精确的计算长度系数。
And the pratal rigid frame can be more and more important and applied , because of its fast construction , economizing on energy and environmental protection , the overall excellent technical and economic indexes , beautiful 100king ang good anti _ seismic advantages 其中门式刚架具有施工速度快、工业化程度高、综合技术经济指标好；建筑造型美观、抗震性能优越等特点，得到了设计人员越来越广泛的重视。
The frames deflection and moment at the center point of the span about different kinds of gabled frames , different highness and rigid connection column feet is got when horizontal force at the top of a column and equal linear load through a beam is applied 选取不同跨度、不同高度、柱脚刚结的一组门式刚架，计算了其在柱顶水平集中力、竖向均布荷载作用下节点刚度与梁柱线刚度之比对跨中挠度及弯矩的影响。
