新疆乌鲁木齐河分洪工程坝体静、动力计算分析  

Static and Dynamic Calculation and Analysis of Dam Body of Flood Diversion Project of Urumqi River in Xinjiang

作　　者：白阳[1] BAI Yang(Xinjiang Institute of Water&Hydropower Engineering Investigation,Design and Research,Urumqi 830000,China)

机构地区：[1]新疆水利水电勘测设计研究院,新疆乌鲁木齐830000

出　　处：《云南水力发电》2023年第3期98-101,共4页Yunnan Water Power

基　　金：四川省水利科技计划项目(scslkj-2019-08)。

摘　　要：鉴于乌鲁木齐河分洪工程属大(2)型Ⅱ等工程,其主要任务为防洪。为保证坝体安全超高的合理性,通过建立二维有限元模型,对该工程渠首坝体进行静、动力计算分析,采用邓肯张E-B静力本构模型和等效黏弹性动力本构模型,分析坝体变形的合理性及永久变形量,为安全超高提供合理依据。结果表明:各个工况下坝体位移不大均小于规范1%沉降量范围,根据计算结果并参考同类大坝沉降情况,初步确定坝顶预留沉降超高按照相应坝段坝高的1%加高,坝顶高程最大增加高度6cm,可满足设计要求。The flood diversion project of Urumqi River is a large(2)type II project,whose main task is flood control.To ensure the rationality of safety and superelevation of the dam body,the static and dynamic calculation and analysis of the dam body at the canal head of the project are carried out by establishing a two-dimensional finite element model.Duncan Zhang E-B static constitutive model and equivalent viscoelastic dynamic constitutive model are used to analyze the rationality and permanent deformation of dam body,which provides reasonable basis for safe superelevation.The results show that the displacement of dam body under each working condition is not less than 1%of the settlement range specified in the code.According to the calculation results and referring to the settlement of similar dams,it is preliminarily determined that the pre-set settlement superelevation of dam crest is increased by 1%of the corresponding dam height and the maximum height of dam crest is increased by 6cm,which can meet the design requirements.

关 键 词：乌鲁木齐河 有限元 静动力计算 应力应变 永久变形 

分 类 号：TV31[水利工程—水工结构工程]