水利施工中碾压混凝土拱坝诱导缝开裂分析研究  

Analysis and research on induced crack cracking of RCCarch dam in water conservancy construction

作　　者：袁宇 YUAN Yu(Power Chinavibroflotation construction engineering Co.,Ltd.,Beijing 100102,China)

机构地区：[1]中电建振冲建设工程股份有限公司,北京100102

出　　处：《粘接》2024年第2期167-170,共4页Adhesion

摘　　要：为了合理的设置诱导缝,保证拱坝施工稳定性,提出水利施工中碾压混凝土拱坝诱导缝开裂分析研究。建立碾压混凝土的本构模型,通过本构模型分析混凝土的本构关系,获得应力和应变之间的关系;在模拟过程中通过薄层实体接缝单元完成诱导缝的计算与模拟;设计了计算条件并设置了分缝方案。在不同方案下对诱导缝的开裂情况展开判断和分析,获取混凝土拱坝的应力变化趋势,以此完成碾压混凝土拱坝诱导缝的开裂分析。结果表明,诱导缝区域混凝土拱坝应力明显低于其他区域,应力减小的幅度和与诱导缝距离之间呈反比,区域产生的应力与诱导缝距离越远越小。In order to reasonably set the induced joints and ensure the stability of arch dam construction,an analysis and research on induced joint crack cracking of roller compacted concrete arch dams in water conservancy construction was proposed.The constitutive model of roller compacted concrete was established,the constitutive relationship of concrete was analyzed through the constitutive model,and the relationship between stress and strain was obtained.The cracking of the induced joints was judged and analyzed under different schemes,and the stress change trend of the concrete arch dam was obtained,so as to complete the cracking analysis of the induced joints of the RCC arch dam.The analysis results showed that the stress of the concrete arch dam in the induced joint region was significantly lower than that in other regions,and the reduction amplitude of stress reduction was inversely proportional to the distance from the induced joint,the stress generated in the region decreased as the distance from the induced joint increased.

关 键 词：碾压混凝土拱坝 本构关系 诱导缝模拟 水利施工 诱导缝开裂分析 

分 类 号：TV642[水利工程—水利水电工程] TQ178[化学工程—硅酸盐工业]