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Seismic reliability analysis of urban water distribution network

Li Jie (李 杰)1,2 , Wei Shulin (卫书麟)3 and Liu Wei (刘 威)1

  1. Building Engineering Department, Tongji University, Shanghai 200092, China

  2. State Key Laboratory for Disaster Reduction in Civil Engineering, Shanghai 200092, China

  3. China Construction (Shenzhen) Design International, Shanghai 200233,China

Abstract: An approach to analyze the seismic reliability of water distribution networks by combining a hydraulic analysis with a first-order reliability method (FORM), is proposed in this paper. The hydraulic analysis method for normal conditions is modified to accommodate the special conditions necessary to perform a seismic hydraulic analysis. In order to calculate the leakage area and leaking flow of the pipelines in the hydraulic analysis method, a new leakage model established from the seismic response analysis of buried pipelines is presented. To validate the proposed approach, a network with 17 nodes and 24 pipelines is investigated in detail. The approach is also applied to an actual project consisting of 463 nodes and 767 pipelines. The results show that the proposed approach achieves satisfactory results in analyzing the seismic reliability of large-scale water distribution networks.

Keywords: water distribution network; leakage model; hydraulic analysis; FORM; seismic capacity reliability

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Copyright 2009 IEM. Journal of Earthquake Engineering and Engineering Vibration. All Rights Reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, scanning or otherwise, except as described below, without written permission from the Publisher. Copying of articles is not permitted except for personal and internal use, to the extent permitted by national copyright law, or under the terms of a license issued by the National Reproduction Rights Organization of China.