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| STUDY ON THE LONGITUDINAL RESPONSE OF MUNICIPAL PIPELINES INDUCED BY CONSTRUCTION LOAD |
| ZHANG Chenrong1，2，LU Kai1，2，HUANG Maosong1，2 |
(1. Department of Geotechnical Engineering，Tongji University，Shanghai 200092，China；2. Key Laboratory of Geotechnical
and Underground Engineering of Ministry of Education，Tongji University，Shanghai 200092，China) |
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Abstract The construction load causes extra deformation and bending moment on nearby buried municipal pipelines，even damage. Simplified theory for longitudinal response of municipal pipeline under construction load is given，based on the Winkler subgrade model and consideration for the mechanical property of joints of discontinuous pipelines. The effects of extra stress and soil displacement are considered respectively from different mechanism，and soil-pipeline interaction parameters are revised. The rationality of the method is verified by comparisons with model tests and finite element method. Then the parametric study is conducted to investigate the influence of soil elastic modulus and the joint stiffness on the behavior of pipeline due to nearby construction load. The research provides theoretical support for the long-term maintenance of municipal pipelines.
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2015, Vol. 34 
