Performance Of Building Systems Research Articles

Seismic Response Control of Buildings Using Friction Dampers

In the last decade, many energy dissipating systems have been proposed to raise the seismic design of structures beyond the conventional ductility design approach. Among these new systems, friction damping has shown some great potential. In a friction damped system, friction damping devices are inserted in a structure and slip at a predetermined optimum load during severe seismic excitations, before any yielding of the structural members has occurred. Slipping of the devices allows the structure to dissipate the input seismic energy mechanically by friction rather than by inelastic deformation of the structural elements. This paper presents an overview of the recent research and development in Canada on a particular type of friction damped bracing. Analytical and shake table test results are first summarized to illustrate the earthquake performance of friction damped structures compared to the performance of conventional building systems. The development of a design slip load spectrum for the rapid estimation of the optimum slip load distribution is then presented. Finally, two practical examples of the implementation of this system are described: (1) the design of a reinforced concrete library building; and (2) the retrofit of a precast concrete school building.

パネル化した木造軸組外側気密・断熱住宅の構法計画と性能 : 北海道における木造住宅外断熱構法に関する基礎的研究(その4)

パネル化した木造軸組外側気密・断熱住宅の構法計画と性能 : 北海道における木造住宅外断熱構法に関する基礎的研究(その4)

Quality of performance in-use of building systems

This paper presents a systematic approach to the field investigation of the quality of performance in-use of building systems. The methodology is based on the application of the performance concept to all stages of the evaluation process, which is composed of field investigation, data analysis and evaluation. During the field investigation, two main information samples are obtained: an objective physical check of the buildings and a detailed user's satisfaction profile. These are used in order to establish Performance Pathology Profiles of the building system (or systems), and to evaluate their Actual Performance Quality Level. The paper presents the methodology and results of its application in two projects of public consequence: an evaluation of the performance of modular industrial buildings (sample of 42 users) and an evaluation of the performance of lightweight building systems for housing (sample of 72 dwellings).