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首页> 外文会议>Structural Engineers Association of California(SEAOC) Convention; 20050928-1001; San Diego,CA(US) >Seismic Design of a Mountain Residence Subjected to Extremely High Snow Loads
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Seismic Design of a Mountain Residence Subjected to Extremely High Snow Loads

机译：承受极高雪荷载的山区住宅的抗震设计

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Buildings in the Sierra Nevada Mountains are subjected to extremely high snow loads. A house was designed with ground snow loads of over 200 pounds per square foot. The varying roof slopes and roof elevations created valley snow loads and drift loads over 220 psf. Designing the structure for these extremely high vertical loads was difficult. In addition, the local building code required that 25 percent of the maximum snow load be included in the structural mass used for seismic loading. The roof mass with the snow is 2 to 3 times higher than the roof mass without the snow. Designing the structure for these high lateral loads was challenging. As with most large custom homes, the house has tall walls that contain many windows leaving very few usable shear walls to resist the high lateral loads. The lateral load resisting system consists primarily of wood shear walls. However, at a particularly large and tall window wall, a steel ordinary moment frame was incorporated. At the isolated entryway, steel cantilever columns were used, and around the garage door manufactured wood shear panels were used. A few sections of the governing building code are vague and difficult to interpret. Because of this, the SEAOC Seismology and Structural Standards Committee has issued position papers to clarify some of these vague code issues. A few of these opinion papers were used for the structural design of this residence. The horizontal diaphragm, the discontinuous shear walls, and the cantilever columns were designed based upon these opinion papers. The moment frame and manufactured wood shear panels were designed using requirements and restrictions that were extrapolated from those shown in the cantilever columns position paper.
机译：内华达山脉的建筑物承受着极大的积雪。设计的房屋地面积雪每平方英尺超过200磅。不断变化的屋顶坡度和屋顶高程产生了超过220 psf的山谷雪荷载和漂移荷载。为这些极高的垂直载荷设计结构非常困难。此外，当地建筑法规要求将最大雪荷载的25％包含在地震荷载所用的结构体中。有雪的屋顶质量是没有雪的屋顶质量的2至3倍。设计用于这些高侧向载荷的结构具有挑战性。与大多数大型定制房屋一样，房屋的墙壁很高，其中包含许多窗户，只剩下很少的可用剪力墙来承受较高的侧向载荷。抗侧向载荷系统主要由木剪力墙组成。但是，在一个特别大而又高的窗户墙处，采用了普通的钢制矩型框架。在隔离的入口处，使用了悬臂钢柱，在车库门周围使用了木制剪力板。规范性建筑法规中的某些部分含糊不清，难以解释。因此，SEAOC地震与结构标准委员会发布了立场文件，以澄清其中一些含糊的法规问题。这些意见书中有一些用于该住宅的结构设计。基于这些意见书设计了水平隔板，不连续剪力墙和悬臂柱。弯矩框架和人造木剪板的设计使用了一些要求和限制，这些要求和限制是从悬臂柱位置文件中所示的要求和限制得出的。

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