Evaluation of large deformation performance for gas pipelineTokyo Gas evaluates the seismic performance of welded steel pipes, which are widely used in gas pipelines.
Because gas pipelines are buried underground, they may deformed as a result of ground motion when earthquakes cause soil liquefaction or other problems. For this reason, it is important to clarify the deformation behavior of gas pipelines and confirm whether they exhibit their designated seismic performance.
Evaluation of large deformation behavior for linepipe
We clarify the deformation behavior of straight pipe and bent pipe by full-scale testing and numerical simulation assuming a situation in which large ground motion is caused by soil liquefaction.
We can also predict the deformation behavior for a complicated gas piping system consisting of multiple curved pipes.
〔Evaluation of large deformation behavior for linepipe〕
|Ground motion caused by soil liquefaction|
|Deformation behavior simulation for gas pipes|
|Deformation behavior simulation for bent pipes||Deformation behavior simulation for straight pipes|
|Bending test for bent pipes||Bending test for straight pipes|
Going forward, we will continue working to advance the technology of structural integrity for gas pipeline with the aim of supplying gas to our customers safely in the future.