坝体裂缝对拱坝承载力的影响  

Influence of dam crack on carrying capacity of arch dam

作　　者：严成斌[1] 向贤镜 

机构地区：[1]中国水电顾问集团贵阳勘测设计研究院,贵州贵阳550081

出　　处：《东北水利水电》2011年第6期7-8,11,共3页Water Resources & Hydropower of Northeast China

摘　　要：文章以下涧口水库拱坝的相关数据,选取单位高度拱圈作为研究对象,采用有限元法,应用ANSYS通用计算软件进行模拟计算分析。从拱圈开裂后出现的裂缝条数的变化,拱圈中心角的改变、跨度不同等,多方面分析裂缝对拱圈承载能力的影响。得出裂缝对拱圈的承载能力有所降低,单边开裂对拱圈承载能力降低最为明显,但裂缝数量的增加对拱圈的承载能力影响较小,拱坝开裂基本不影响其继续使用。Taking unit-height arch ring as an example,the paper simulates and analyzes influence of crack on carrying capacity of arch ring from the change of crack number,change of central angle of arch ring,different span,etc,by using the ANSYS software and the finite element method based on relative data of Xiajiankou reservoir arch dam.The result is that the crack decreases the arch ring carrying capacity,especially the side-crack is most obviously,but the influence of increase of crack number on the carrying capacity is small and crack will not affect the normal usage basically.

关 键 词：拱坝裂缝 承载能力 接触单元 

分 类 号：TV642.4[水利工程—水利水电工程]