摘要
在研究方法上采用国际大型通用有限元软件ANSYS建模与自主开发主体计算程序相结合的办法来实现坝体纵缝的仿真计算。通过某典型算例对碾压混凝土坝施工期和运行期温度徐变应力场进行了全过程仿真计算分析。分析了坝体不同间距的纵缝对坝踵、上游面、坝体中心部位、坝趾、下游面的温度应力的影响情况。总结出规律,得出一些具有应用价值的结论,为实践工程中设计坝体纵缝和进一步的理论研究提供了一定的理论依据。
Study method is to combine ANSYS-international large-scale general-purpose finite element software with the main body program, which was exploited by our laboratory researchers, to realize the simulation analysis for the longitudinal joint in the high gravity dam. The thermal creep stress field, in roller compacted concrete gravity dam during construction and operation, were tested by a typical case simulation. Changes of thermal stress at dam heel,upstream face,main dam body,dam toe,and downstream face for the longitudinal joint of different space were analyzed. The law has been summarized and application value conclusion has been educed; Its referring theories of devising a longitudinal joint in the dam on project and more study on a longitudinal joint theory have been offered.
