Response of Buried Power Transmission Cables to Earthquake-induced Permanent Ground Deformations
The performance of buried power transmission cables in areas subjected to ground deformations is an important engineering consideration for the utility owners. The performance of buried power transmission cables subjected to permanent relative axial ground displacements was investigated using a full-scale testing facility. The facility comprises a 2.5 m x 3.8 m soil chamber, with the capacity to subject buried transmission cables (or pipelines) to large relative displacements. The buried cables were subjected to relative axial and transverse soil movements, and the test results are compared with the response predicted from commonly used approaches to assess the performance of buried pipelines. The peak loads under relative axial soil movements on cables buried in dense soil were noted to be under-predicted by the current approaches; this is likely due to the increased soil normal stresses on the cable due to constrained soil dilation not accounted by the current approaches. The general trend of the predicted response using current approaches for pipelines under lateral loading is in reasonable agreement with the experimental observations, although direct comparisons between the test results and the predictions were difficult due to the three-dimensional cable deformation patterns arising from lateral loading tests.
Soil Cable Interaction Ground Deformations Power Transmission Cable
A. Ahmadnia D. Wijewickreme C.E. Ventura J. Toth
Research Assistant, Dept. of Civil Engineering, University of British Columbia, Vancouver. Canada Associate Professor, Dept. of Civil Engineering, University of British Columbia, Vancouver. Canada Professor, Dept. of Civil Engineering, University of British Columbia, Vancouver. Canada Project Manager, British Columbia Transmission Corporation Vancouver, Canada
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）