地下洞室的埋置深度和洞形设计优化

Design Optimization for Embedded Depth and Shape of Underground Cavity

将洞周控制点的位移偏差作为优化设计的目标函数，把洞周几何参数分离为形状变量和面积变量，并以形状变量为设计变量，以面积变量去满足设计约束条件。本文用这种优化方法进行了实例计算，探讨了在不同埋置深度条件下的地下洞室形状的最优断面的一般变化规律。

Take the displacement deviation of controlled points around the cavity as objective function of optimum design and separate the goemetric parameters surrounding the cavity into shape variables and area variables and take the shape variables as design variables and fulfill the design constraints with area variables, calculation is conducted herein with the above mentioned optimum method. The general law of variation on optimum section of underground cavity shape under the condition of different embedded depth is discussed.