| With the rapid development of social economy,the urban population keeps growing,and the demand for water resources continues to increase.In addition,the uneven distribution of water resources in time and space aggravates the contradiction between supply and demand of water resources,so it is imperative to build a new water source project.As a result of the four seasons temperature difference and temperature difference between day and night,plus the large dam concrete,the late often lead to larger because of temperature stress of concrete arch dam dam cracks,thus produced ooze water,seriously will affect the safety of the structure,therefore,for arch dam concrete pouring and joint design,to take necessary measures to reduce thermal stress damage.Through the optimization design and simulation analysis,this paper effectively reduces the filling volume of Yuliang arch dam,and simplifies the concrete construction technology,which provides a strong support basis for the completion of dam pouring on schedule and controllable project investment,with obvious economic benefits.Magnesium oxide concrete dam is a major innovation and breakthrough in hydraulic construction materials.This technology has been widely applied in the humid,warm and small inter-annual temperature difference southern regions such as Guizhou and Guangdong.In Guizhou alone,it has been successfully applied in Laojiangdi,Magao River,Huanghuazhai,Shalaohe,Sanjiang and other reservoir arch DAMS.The Bureau of Quality and Technical Supervision of Guizhou Province issued the Technical Specification for Concrete Arch Dam Doped with Magnesium oxide(DB52T/720-2010)on June 20,2011.In this paper,through finite element simulation calculation and analysis of Mg O doped concrete arch dam,the temperature control measures and slits design are optimized,which provides reference experience for the subsequent temperature control measures and slits design of Mg O doped concrete arch dam. |
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