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介绍目前水利水电工程设计中常遇到的软弱地基上拱形围堰的光弹性试验研究.其中包括异弹模组合模型浇制与粘结、水砂压荷载模拟及主要试验成果. 文中分析了在上述荷载作用下拱堰的受力特点和工作状态,探讨了低弹模基础和边界条件不对称性对堰体内力的作用和影响,提出了进一步改善应力和稳定条件的途径和措施.
This paper introduces the photoelastic test research of the arched cofferdams on the soft foundation often encountered in the design of water conservancy and hydropower projects. It includes the casting and bonding of different elastic model combinations, the simulation of hydraulic sand load and the main experimental results. Under the above loads, the stress characteristics and working conditions of the arches are discussed. The effects of the asymmetry of the low elastic model foundation and boundary conditions on the internal forces of the concrete are discussed. The approaches and measures to further improve the stress and stability conditions are proposed.