05-28-2011, 06:02 AM
Guidelines for Seismic Vulnerability Reduction in the Urban Environment
Author: Massimo Forni | Size: 8.3 MB | Format: PDF | Publisher: IUSS Press | Year: 2007 | pages: 333 | ISBN: 9788861980082
This report deals with the reduction of the seismic vulnerability of buildings and infrastructures. This can correspond to very different interventions, as there are many types of structures, many materials and many ways to reduce vulnerability. This explains that a variety of topics is treated.
The first chapter deals with the screening of buildings on an urban scale to identify which need retrofitting. In the second chapter, conventional methods for retrofitting are described.
In all the following chapters, new techniques for retrofitting are presented. The application of Fibre Reinforced Polymers (FRP) on existing structures is a technique which has developed a lot recently. The content of Chapter three is related to the design of FRP solutions: a user friendly design tool, experimental data on durability and fatigue and a design method considering the contribution of steel rebars and FRP to resistance. An effective numerical model for composite is presented. Chapter three also describes experimental studies on masonry infill which FRP can effectively reinforce against transverse move and for their in-plane strength. Rehabilitation using that technique can be applied at an urban scale. The use of dissipative devices to reduce the vulnerability of structures is the subject of Chapter four. The technique is applied to precast concrete portal frames and to steel frames with concentric bracings. The use of base isolation for seismic upgrading of historical buildings is developed in Chapter five, in which a displacement - based method is applied to a light house. The mitigation of hammering between buildings, with a methodology to face various situations, is the subject of Chapter six. A displacement based methodology of analysis for underground structures in soft soils is presented at Chapter seven. This Report focuses on practical applications rather than on theory.
The first chapter deals with the screening of buildings on an urban scale to identify which need retrofitting. In the second chapter, conventional methods for retrofitting are described.
In all the following chapters, new techniques for retrofitting are presented. The application of Fibre Reinforced Polymers (FRP) on existing structures is a technique which has developed a lot recently. The content of Chapter three is related to the design of FRP solutions: a user friendly design tool, experimental data on durability and fatigue and a design method considering the contribution of steel rebars and FRP to resistance. An effective numerical model for composite is presented. Chapter three also describes experimental studies on masonry infill which FRP can effectively reinforce against transverse move and for their in-plane strength. Rehabilitation using that technique can be applied at an urban scale. The use of dissipative devices to reduce the vulnerability of structures is the subject of Chapter four. The technique is applied to precast concrete portal frames and to steel frames with concentric bracings. The use of base isolation for seismic upgrading of historical buildings is developed in Chapter five, in which a displacement - based method is applied to a light house. The mitigation of hammering between buildings, with a methodology to face various situations, is the subject of Chapter six. A displacement based methodology of analysis for underground structures in soft soils is presented at Chapter seven. This Report focuses on practical applications rather than on theory.
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