大升程碾压混凝土翻升模板施工安全特性研究  

Study on Construction Safety Characteristics of Turn-over Formwork with Large Lift Roller Compacted Concrete

作　　者：赵玉昆 田正宏[1] 李荣果[2] 郑祥[2] ZHAO Yu-kun;TIAN Zheng-hong;LI Rong-guo;ZHENG Xiang(College of Hydrology and Water Resources,Hohai University,Nanjing 210098,China;Branch No.1 of Sinohydro 7 Co.,Ltd.,Pengshan 620860,China)

机构地区：[1]河海大学水利水电学院,江苏南京210098 [2]中国水利水电第七工程局有限公司第一分局,四川彭山620860

出　　处：《水电能源科学》2018年第11期128-131,共4页Water Resources and Power

摘　　要：针对碾压混凝土6.2m翻升模板施工工艺的安全问题,基于有限元原理,借助ADINA软件建立大模板整体结构三维有限元模型,模拟了碾压混凝土模板在各浇筑时间荷载工况下的形变和应力最大值,并以澜沧江乌弄龙水电站碾压混凝土工程组合大模板为例,获取现场浇筑中应变试验实测值与有限元模拟结果进行对比。结果表明,6.2m模板满足施工安全性要求,基于三维有限元仿真分析模板变形量和应力符合安全性要求并未超出设计容许值,结合现场试验实测数据也验证了有限元分析的准确性和有效性,可为其他大模板安全施工提供借鉴。Aiming at the construction safety problem of the 6.2 m uplifted formwork in RCC, based on the finite ele- ment principle, the 3D finite element model of the large formwork monolithic structure was established by the software ADINA. The deformation and maximum stress of the RCC formwork were simulated under various pouring time and loading conditions. The combined large formwork of roller compacted concrete at Wunonglong Hydropower Station in the Lancang River was taken as an example. Compared with the actual strain measured in the on-site pouring and the finite el- ement simulation results, it shows that the 6.2 m formwork meets the requirement of construction safety. The deforma- tion and stress of the formwork based three-dimensional finite element simulation are in line with the safety requirements, and it does not exceed the design tolerances. Combined with field test data also verifies the accuracy and effectiveness of the finite element analysis. The method can be further applied in the safety construction of other large formwork.

关 键 词：碾压混凝土 翻升模板 仿真分析 受力性能 

分 类 号：TV642.2[水利工程—水利水电工程]