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Study on the Seismic Vulnerability Assessment Method of Water Supply Pipelines

Author: WangYuFei
Tutor: ZhangHongWei
School: Tianjin University
Course: Environmental Engineering
Keywords: Water supply network Seismic vulnerability Finite Element Fuzzy Mathematics
CLC: TU991.33
Type: Master's thesis
Year: 2010
Downloads: 126
Quote: 3
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Abstract

Water supply network as an important part of the Urban Lifeline Engineering, assume the tap water from the the waterworks pump station to the user conveyance task, is one of the important guarantee for the normal production and life of urban residents. However, a variety of man-made and natural factors will undermine the role of the different levels of water supply pipe network, where earthquakes are natural factors that pose the greatest threat to the water supply network. Seismic studies have been carried out for underground piping system at home and abroad a lot, but still have not formed a set of effective evaluation method. Water supply pipe network for reasonable and effective evaluation of earthquake water supply pipe network for KGWL Development Zone, the object of study, this study, extensive reference to the methods and results of the research on the basis of a combination of finite element analysis and fuzzy math seismic vulnerability assessment of the water supply network method (Seismic Vulnerability Assessment). First, through the combination of many domestic and foreign research method and KGWL Development Zone, water supply networks of their own characteristics, the water supply network modeling method were analyzed and discussed. Then, finite element analysis for the basic modeling method, selection of ABAQUS software modeling platform, water supply pipe network KGWL Development Zone in different directions pipeline interface simplifies modeling, and earthquake seismic waves known as input dynamic analysis. By analyzing the simulation results, the earthquake damage based on maximum mise stress pipeline interface. After the simulation results of the straight pipe interface is determined by the introduction of strain adjustment coefficient calculated by the seismic response of the four different tube member. Finally, fuzzy mathematical methods, pipes and fittings earthquake mise stress failure criterion and the corresponding membership function is constructed. In order to distinguish between the importance of different location and service unit of the pipe network, and the use of fuzzy clustering analysis method based on the ring block users KGWL Development Zone pipe network water consumption and the distance from the water, the entire pipe network block-sized. The combined membership function to calculate the result of fuzzy clustering analysis, the final earthquake vulnerability indicators of water supply pipe network calculation. Through this research, a more complete set of earthquake vulnerability assessment of the water supply network, the method is still difficult to directly guide practice, but the whole idea and the technology is feasible in theory, is bound to the water supply pipe network of earthquake research have a positive role in promoting.

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CLC: > Industrial Technology > Building Science > Municipal Engineering > Water supply project ( on the Water Works ) > Water distribution > Water distribution network
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