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本文介绍东风水电站拱形围堰的三维光弹性实验研究,其中包括异弹模组合模型浇制与粘结、水沙压荷载模拟及主要试验成果。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不对称边界条件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。
In this paper, the three-dimensional photoelastic experiment of arch cofferdam of Dongfeng Hydropower Station is introduced, including the casting and bonding of different-model combination model, the simulation of water-sand pressure and the main experimental results. The force characteristics and working status of the cofferdam under the above load are analyzed. The effect and influence of the low elastic modulus foundation and asymmetric boundary conditions on the internal force of the cofferdam are discussed. The ways and measures to further improve the stress and stability conditions are also proposed.