建筑给排水管道水力冲击分析与模拟仿真  

作　　者：聂成才 顾明丽 

机构地区：[1]沈阳万宸建筑规划设计有限公司,沈阳110005 [2]万科(沈阳)企业管理有限公司,沈阳110000

出　　处：《科技创新与应用》2023年第35期54-56,61,共4页Technology Innovation and Application

摘　　要：城市规模的不断扩大和自然透水区的不断萎缩,给城市建筑的给排水工作提出日益严峻的挑战。因此,建筑给排水管道的合理设计对建筑物整体的服务性能具有十分重要意义。该文针对给排水过程中的水力给管道造成的冲击进行深入研究。首先,针对建筑物给排水管道内的水力冲击问题进行分析,重点分析因留存尾水导致的前后水夹生气囊的情况。其次,鉴于含气水冲击的特殊性,对压缩气体部分进行刚性柱建模。最后,通过实验工作分析建筑给排水管道内水力冲击效果。实验结果表明,刚性柱建模模拟的给排水管道内压强变化曲线,非常接近于真实值的变化情况。The continuous expansion of urban scale and the continuous shrinkage of natural permeable areas have posed increasingly severe challenges to the water supply and drainage work of urban buildings.Therefore,the reasonable design of the building water supply and drainage pipeline is of great significance to the overall service performance of the building.This paper makes an in-depth study on the impact of hydraulic power on the pipeline in the drainage process.First of all,the hydraulic impact in the drainage pipe of the building is analyzed,focusing on the situation of the air bag caused by the retention of tail water.Secondly,in view of the particularity of gas-water impact,the rigid column model of compressed gas is built.Finally,the hydraulic impact effect in the building water supply and drainage pipeline is analyzed through the experimental work.The experimental results show that the pressure change curve of the water supply and drainage pipeline simulated by the rigid column model is very close to the real value.

关 键 词：给排水 含气水 水力冲击 留存尾水 加生气囊 

分 类 号：TV134[水利工程—水力学及河流动力学]