پاورپوینت اصول مهندسی پل - دانلود رایگان
دانلود رایگان
دانلود رایگان لینک دانلود و خرید پایین توضیحاتدسته بندی : پاورپوینتنوع فایل : powerpoint (..ppt) ( قابل ويرايش و آماده پرينت )تعداد اسلاید : 28 اسلاید قسمتی از متن powerpoint (..ppt) : اصول مهندسی پل بارگذاری پل ها قسمت دوم: بارگذاری لرزه ای به نام خدا 1 تصاویر نمونه ای از آسیب زلزله بر پلها را نشان میدهد: 2 liquefaction and lateral spreading, resulting in permanent substructure deformations and loss of superstructure support 3 Near-fault ground motions can impose large deformation demands on yielding structures, as was evident in the overturning collapse of all 17 bents of the Higashi-Nada Viaduct of the Hanshin Expressway, Route 3, in Kobe 4 Construction modifications, either during the original construction or during the service life, can also have a major effect on bridge performance. Figure shows a bridge column that was unintentionally restrained by a reinforced concrete channel wall. The wall shortened the effective length of the column, increased the column shear force, and shifted nonlinear response from a zone of heavy confinement upward to a zone of light transverse reinforcement, where the ductility capacity was inadequate. Failures of this type illustrate the importance of careful inspection during construction and during the service life of a bridge.