【摘要】 从拱坝温度荷载影响因素分析入手，对封拱温度场进行了优化，这是减小温度荷载不利影响的唯一有效措施。建立了拱坝封拱温度场多目标优化的数学模型，并利用该优化模型求解了位于南方典型气温条件下的某拱坝最优封拱温度场。实例应用表明，通过优化不仅可以使拱坝的应力、稳定条件大为改善，而且还可以使人工冷却措施简化。更多还原

【Abstract】 The joint closure temperature field in an arch dam is optimized by starting with analysis of factors affecting temperature loads in arch dams, which is the unique efficient measure for reducing adverse influence of temperature loads. A multi-objective mathematical model of joint closure temperature field of arch dam has been developed. The optimization model was used to solve the optimal joint closure temperature field of an arch dam with typical southern climatic conditions. Results from application of the model to the actual case show that optimizing the joint closure temperature field could not only remarkably improve stress and stability conditions, but also simplify the measures for artificial cooling.更多还原