Monitoring and calculation methods of water hammer on long and large diameter urban water supply pipelines
With the development of urban construction in our country,there are many applica-tions of long distance water transmission pipeline,and the effect of water hammer can not be ig-nored in the design process of long distance water transmission pipeline.Therefore,the effect of water hammer caused by sudden shutdown of long and large diameter pipeline is studied in this pa-per.High frequency dynamic pressure sensors are used to carry out field monitoring tests.The re-sults calculated by"FSI four-equation model"are compared with those calculated by the traditional water hammer equations,and,at the same time,the relevant numerical simulation was carried out based on ABAQUS simulation.The results show that the maximum compressive stress is located inside the top and bottom of the pipe and the maximum tensile stress is located inside the waist of the pipe under the action of water hammer.The wall thickness is positively correlated with the stress and displacement,the pipe diameter is positively correlated with the stress and negatively correlated with the displacement,and the buried depth of the pipe has little influence on the stress and displacement.The calculated results and numerical simulation results in this paper are close to the actual monitoring value.The ABAQUS simulation has certain guiding significance for water hammer simulation.
Long and large diameter urban water supply pipelinesWater hammer monitoringNumerical modelingSafety evaluation
万方数据
维普
