This paper analyzes the feasibility and theory evidence as additional load according to code for seismic design of buildings and load code for the design of building structures . the paper puts forward a kind of predigest account method aiming at these problems by the feasibility analyzes of the gabled frames as additional load and defining a magnified coefficient through analyzing the level earthquake force at the floor of this building according to the code for earthquake this force is in the total building and the gabled frames as additional load multiply a certain magnified coefficient 本文针对目前出现的问题,参照建筑抗震设计规范和建筑荷载规范通过对上部结构作为附加荷载的可行性分析,分析整体计算楼层的底部水平地震力和把加层部分作为附加荷载乘以放大系数来计算楼层的底部水平地震力,当两者相等或接近时,即可确定放大系数,从而提出简化计算方法。
According to the above formula , the initial rigidity and ultimate moment is calculated by developed program to several kinds of gabled frames end - plate connection joint with different types ( such as end - plate connection horizontally placed , vertically placed and inclinedly placed ) , different end - plate thickness , different bolt diameter . the different result is compared with different end - plate thickness , the different force arm in joints , different bolt diameters and strength grades 按推导的公式编程计算了不同形式(端板外伸式、端板平齐式、端板斜接、柱腹板加劲) 、不同端板厚度、不同螺栓直径的门式刚架梁柱端板节点的初始刚度、节点极限弯矩，并比较了不同端板厚度、不同节点力臂、不同螺栓直径和强度等级、不同连接形式下初始刚度和极限弯矩的变化。
Gabled frames are widely used in industry and civil engineering , it ' s web plates " local buckling calculated formula in the technical specification for steel - structure of one - storey light - weight buildings with gabled frames ( cecs102 : 98 ) are based on the rectangular plates " and did n ' t consider the interaction of the fringe plate . so , there are some different between the actual members and the prescript of the specification , and the post - buckling strength ' s calculated formula is based on the local buckling ' s , it must have some unreasonable 楔形门式刚架广泛地应用于工业与民用建筑中， 《门式刚架轻型房屋钢结构技术规程》 ( cecs102 ： 98 )中楔形腹板局部屈曲的计算公式来自矩形板，并且没有考虑翼缘的相关作用，因此，规程中的规定与构件的实际工作状况有一定的差异，且屈曲后强度的计算公式也是以局部屈曲系数为基础的，势必有其不合理性。
In the actual ( ( code for steel structure design } ) ( gbj 17 - 88 ) and for the ( ( technical specification for steel structure of light - weight buildings with gabled frames ) ) ( cecs 102 : 98 ) , the calculation method for the stability of the members is : obtaining the axial force through the analysis of the linear - elastic inner force of the whole structrue , then checking the stability inside and outside the plane respectively on the foundation of the yielding rule of the edge 我国现行《钢结构设计规范》 ( gbj17 - 88 )和《门式刚架轻型房屋钢结构技术规程》 ( cecs102 : 98 )对构件的稳定计算方法是：先对构件进行整体线弹性内力分析，得到构件的轴力和弯矩；再根据边缘屈服准则对构件分别进行平面内和平面外稳定验算。
Finally , with caparisons of that three parapets properties cantilevered parapets has been adopt to the steel structure of light - weight buildings with gabled frames , numerical simulations have been carried out with that buildings , results of simulations show that device can also significantly reduce the area - averaged coefficient of wind pressure and high negative suction peaks on zones susceptible to wind pressure . formula has been proposed about the height of that parapet 最后通过三种女儿墙的性能比较确定对门式刚架设置悬挑女儿墙进行数值模拟,结果同样表明悬挑女儿墙能明显地降低门式刚架屋面风荷载敏感区的负压峰值及屋面风荷载体型系数,并给出了女儿墙高度限值公式。
