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原文传递 Image Processing, Analysis, and Management Tools for Gusset Plate Connections in Steel Truss Bridges

题名：	Image Processing, Analysis, and Management Tools for Gusset Plate Connections in Steel Truss Bridges
作者：	Higgins, C.; Gillins, D.; Scott, M.; Todorovic, S.; Javadnejad, F.; Varakantham, S.
关键词：	Image processing software##Software tools##Nonlinear finite element analysis##Bridge inspections##Bridges##Design analysis##GIS(Geographical Information System)##Load Analysis##Bridge safety##Data collection##Gusset plates##Steel truss bridges##
摘要：	This report details the research undertaken and software tools that were developed that enable digital images of gusset plates to be converted into orthophotos, establish physical dimensions, collect geometric information from them, and conduct specification-based and nonlinear finite element analyses of the connections. A software package, GussetImageProcessing.jar, was written that allows the user to process the images, remove the perspective, establish scale, identify the gusset plate boundaries, identify and group fasteners to truss members, and collect the geometric information to conduct AASHTO-LRFR connection ratings on the processed digital images. A separate software package, zGusset.tcl, uses the open-source program OpenSees as the analysis engine and is used to perform non-linear finite element analysis of a gusset plate model. To organize and query the collection of large numbers of high-fidelity quantitative images, a new approach was developed using Geographic Information System (GIS) to link images spatially across various geometric scales, temporally across inspection intervals, and to associate relevant metadata to the image view.
总页数：	119
报告类型：	科技报告