Development of information systems such as intelligent monitoring systems, decision making systems, and bridge management systems for supporting life-cycle processes of bridges has made considerable progress. However, since these information systems c...
Development of information systems such as intelligent monitoring systems, decision making systems, and bridge management systems for supporting life-cycle processes of bridges has made considerable progress. However, since these information systems cannot encompass engineering information of structures, it is difficult to solve practical engineering problems related to bridge structures. This study presents a new strategy, which can guarantee the consistency of engineering information of steel bridges, for the prompt and accurate information service to support quick assessment of structural safety and usability of bridges in an integrated computing environment.This study developed the information model that electronically represent information on project plan, structural analysis and structural design of steel bridges. The information model is based on the STEP standard, which is an open standard, so it can be used as data structures for building a database. Since the information model includes integrated resources of STEP to represent 3D geometric shape and structural analysis information of steel bridges, the built database allows end-users to use the output data of existing systems. The model represents the structural design information of steel bridges into part and assembly information in accordance with product configuration defined by the manufacturing domain. This development method for defining product configuration gives flexibility to the model developers in representing structural design information of steel bridges. This integrated database based on the information model is expected to provide practical engineering information of steel bridge structures to information systems for operation and maintenance of facilities.This study presents the framework for integration of application programs such as the existing CAD/CAE/CAx programs used in practice by applying the STEP-based information model and information technologies. With the system integration framework composed of the information model, data repository, application program, and application programming interface, the physical data generated by each field of civil engineering can be used in practice. This study developed a prototype system according to the system integration framework so that end-users can manage information of steel bridges in an integrated computing environment. Especially, application programs of the prototype system can perform structural analysis and design of steel bridge on the commercial CAD program with an ACIS solid modeling kernel, providing 3D solid modeling capability. With this application program, end-users can collaborate by accessing a remote database via the internet and TCP/IP protocol.This study also presents the method to automatically generate a structural analysis model from structural design information. This method is performed by the full connection between structural analysis and structural design information by using the structured information models. The structural design information of a steel bridge should be updated during the lifetime of the bridge, as a result of maintenance works such as retrofitting, restoration, rehabilitation, etc. Whenever structural design information is changed, the structural analysis information should also be changed and maintained in preparation against emergent situations, e.g. earthquakes, floods, terrors, etc. The automatic generated model is useful not only for performing structural analysis in periodic evaluations of steel bridges, but also for quick assessment of bridges in emergent situations.By using these technologies, this study is expected to present a better computing environment for supporting work processes over the life-cycle of bridges.