下面讲一下我们常见的门式刚架结构。门式刚架轻型房屋，其结构一般由主骨架和支撑系统构成，主骨架包括：
Here we talk about the common portal frame structure. The structure is generally composed of a main frame and a supporting system:
1)主受力构件-门式刚架;
Main bearing member - door type rigid frame;
2)墙架;
2) wall frame;
3)檩条等;
3) purlines;
支撑系统包括：
Support system includes:
1)刚架柱之间的垂直支承;
Vertical support between 1 columns of rigid frame;
2)刚架梁之间的水平支撑;
2) horizontal support between rigid frame beams;
3)刚性系杆、拉条;
3) the rigid tie bar, brace;
4)隅撑等;
4) knee brace etc.;
从以上的构成可以看出，支撑系统占有很大的比例，这也是轻钢结构的特点。
From the above composition can be seen, the support system occupies a large proportion, which is the characteristics of light steel structure.
门式刚架房屋上作用的荷载一般有：竖向荷载(结构自重，雪荷载，积灰荷载，)和水平荷载(风荷载，吊车刹车力),还有地震荷载(水平和竖向)。由于轻钢结构自重较轻，所以对地震的反应也较轻，这一点对抗震非常有利。
The loads on the door frames are generally: vertical load (structural weight, snow load, ash accumulation,) and horizontal load (wind load, crane brake force), and seismic load (horizontal and vertical). Due to the light weight of light steel structure, so the response to the earthquake is light, which is very beneficial to the earthquake.

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