大环平差法在多水源环状管网计算中的应用  

Application of large ring adjustment method in calculation of multi-source ring pipeline network

作　　者：王海龙 周慧芳[2] WANG Hailong;ZHOU Huifang(China Jiaotong (Xi'an) Railway Design Research Institute Co.,Ltd.,Xi’an,aanxi 710075,China;School of Architectural Intelligence. Jiangsu Vocational Institute of Architectural Technology,Xujhou. Jiangsu 221116,China)

机构地区：[1]中交(西安)铁道设计研究院有限公司,陕西西安710075 [2]江苏建筑职业技术学院建筑智能学院,江苏徐州221116

出　　处：《江苏建筑职业技术学院学报》2019年第1期42-46,共5页Journal Of Jiangsu Vocational Institute of Architectural Technology

基　　金：江苏省建设系统科技项目:建筑小区中水和雨水系统联合利用适宜技术研究(2017ZD022)

摘　　要：为了加快管网闭合差的收敛速率,简化环状管网水力计算过程,减少管网平差次数和计算工作量,进行了基于哈代-克罗斯平差法的大环平差方法,以单一水源和多水源环状管网平差过程为例,阐述了大环平差法在城市供水环状管网水力计算中的应用.结果表明:对于单一水源环状管网平差,应先对闭合差最大的大环进行平差,使其对其他环产生较大的影响,从而加快收敛速度,有时甚至可使其他环的闭合差改变方向.多水源环状管网平差较单水源要更为复杂,不仅需要增设虚节点,计算次数也大大增加.采用大环平差法可以在很大程度上加快收敛速度,保证管网闭合差向着有序的方向,达到计算要求.In order to increase the convergence rate of closure error of pipeline network, simplify the hydraulic calculation process of circular pipeline network, and reduce the adjustment times and calculation workload of pipeline network, the method of large ring adjustment based on Hardy-Cross adjustment method is adopted. Taking the adjustment process of single-source and multi-source circular pipeline network as an example, the application of large ring adjustment method in the hydraulic calculation of urban water supply circular pipeline network is expounded. The results show that for the adjustment of single water source annular network, the adjustment of the large ring with the largest closure error should be carried out first, so as to have a greater impact on other rings, thus speeding up the convergence speed, sometimes even changing the direction of closure error of other rings;the adjustment of multi-water source annular network is more complex than that of single water source, which requires not only adding virtual nodes, but also greatly increasing the number of calculations and adopting larger ones. The large ring adjustment method can speed up the convergence rate to a great extent, and ensure that the closure error of the pipeline network is less in an orderly direction until it meets the calculation requirements.

关 键 词：管网平差 大环平差法 多水源 环状管网 闭合差 

分 类 号：TD218[矿业工程—矿井建设]