پاورپوینت اصول مهندسی پل (pptx) 28 اسلاید

دسته بندی : پاورپوینت

نوع فایل : PowerPoint (.pptx) ( قابل ویرایش و آماده پرینت )

تعداد اسلاید: 28 اسلاید

قسمتی از متن PowerPoint (.pptx) :

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. مطالب این بخش مطابق نشریه 463 سازمان برنامه و بودجه می باشد. 5 6 7 8 9