摘要
对于带缝运行的混凝土坝,裂缝的发展演变直接影响到整个坝体的稳定和安全。运行中的混凝土坝主要承受水压和温度荷载作用,因此以某重力拱坝105m高程处的裂缝为例,采用数值仿真分析方法,用接触模型模拟裂缝;应用接触算法,探讨了裂缝开度随水压、温度及二者不同组合情况的演变规律,认为低温、低水位条件对该重力拱坝裂缝开度的影响最为不利。
The evolution of the crack have impact on the stability and safety of the dam. The concrete dam in operation is under loading such as temperature loading and water loading, on the basis of the crack located in 105m height chencun arch-gravity dam ,the evolution of crack opening and crack depth related to loadings such as hydrostatic pressure and temperature are studied using numerical simulation approach, and the contact model is used to simulate the crack. The loading effect on the crack evolution is discussed. Low temperature and low water level is regarded as unfavorable load combination.
出处
《水力发电》
北大核心
2005年第1期27-30,共4页
Water Power
基金
国家自然科学基金重点项目(50139030)
江苏省高校自然科学研究计划(04KJB560047)
关键词
裂缝
演变
荷载效应
重力拱坝
混凝土
crack
evolution
loading effect
arch-gravity dam
concrete
