隔河岩重力拱坝温度荷载的确定

隔河岩拱坝为厚度较大的重力拱坝，温度荷载的计算，除遵循拱坝规范的基本原则外，还针对隔河岩拱坝的具体情况进行某些变革，所得出的三个特征温度场具有不同于一般拱坝的特点。本文介绍了坝面边界条件和温度荷载的计算情况。对拱坝变化温度场的分析，以及为了改善坝体应力，采取调整封拱温度，减小等效温差的方法进行了重点论述。

Temperature load detemination for Geheyan arch-gravity dam

The Geheyan arch-gravity dam is of relatively large thickness. The temperature loads are determined not only following the relevant fundamental principle specified in the arch dam design norms in force but also introducing appropriate modification in accordance with Geheyan arch dam's specific features.The resulting three characteristic temperature fields are different from conventional ones. In this paper, the temperature field boundary conditions and the temperature loads calculation for this arch dam are described. And analysis for the variation of temperature fields in the dam body and reduction of the equivalent temperature difference by adjusting the dam's transverse joints grouting temperature to improve the arch dam stresses states are discussed in detail.