某碾压混凝土拱坝诱导缝布置形式研究

Induced Joint Schemes of A RCC Arch Dam

合理的诱导缝布置形式是碾压混凝土拱坝在设计过程中需要解决的关键技术问题之一,对拱坝运行期的安全具有比较重要的影响。利用ABAQUS有限元软件,对某碾压混凝土拱坝不同诱导缝布置形式下的应力变位特征进行分析。研究结果表明:合理的诱导缝布置形式能够有效防止坝体产生过大的拉应力造成坝体开裂,同时对坝体的稳定性削弱较小。并通过不同诱导缝布置方案应力变位特征的对比分析,得到了某碾压混凝土拱坝合理的诱导缝布置形式。

Reasonable arrangement of induced joints is one of the key technical problems which are needed to be solved in the design process of RCC arch dam. The safety of the arch dam in operation period are directly related by them. In this paper, the stress and displacement of a RCC arch dam under different arrangement of induced joints are analyzed by using ABAQUS finite element software. Research results show thatthe dam cracking caused by the tensile stress can be prevented effectively by thereasonable arrangement of induced joints. Different arrangement of induced joints schemes have little effect on the overall stability of the RCC arch dam. And the reasonablearrangement of induced joints schemes is obtained by the comparison of stress and displacement of different arrangement of induced joints schemes.