Dynamic Response Analysis of Super-large Diameter Flexible Pipeline Dynamic Compaction in Beach Area
In order to investigate the mechanical performance and corresponding vibration isolation measures of large buried pipelines under the environment of surrounding dynamic compaction construction,this study combined the actual conditions and characteristics of a large-caliber flexible pipeline construction project in the Pudong New Area of Shanghai.The LS-DYNA finite element software was used to construct a three-dimensional numerical simulation model of the hammer-soil-pipeline-pipe trench-water system coupling.By employing variable parameters,numerical simulation analysis was conducted to examine the vibration response of the buried pipeline under dynamic compaction operations.The study investigated the effects of construction variables such as hammer impact point-pipe distance and impact energy,as well as design elements like pile foundations,U-shaped rein-forced concrete pipe trenches,and water inside the pipe on pipeline vibration.Suggestions for construction protective measures regarding vibration response of the buried pipeline in this engineering project were proposed.The research findings have signifi-cant reference value for the design and construction of future buried pipeline projects in beach areas.
dynamic compactionpipelinedynamic responsefinite element calculationvibrationLS-DYNA
万方数据
维普
