【摘要】 应用三维非线性有限元方法,结合实际工程,研究地下厂房中下部分级开挖和吊车梁荷载两个因素对岩锚吊车梁及附近围岩局部变形、稳定性的作用与影响,比较了刚体力系平衡法与有限元法计算岩锚吊车梁锚杆的受力情况和两者之间的差异,分析了吊车梁与洞壁接触面的稳定性,论证了三维非线性有限元方法用于研究水电站地下厂房岩锚吊车梁的合理性。更多还原

【Abstract】 3D nonlinear FEM is used to study the effect caused by the stage excavation of the underground plant’s midbottom part and the loading of rockanchored crane beam for deformation and stress in the crane beam and its nearby surrounding rock. As a practical engineering example, we compare Equity of Geostatic to FEM in computing the force of anchors and analyze the stability of the contact surface between crane beam and plant wall. Finally, the rationality of 3D nonlinear FEM when it is used to study the rockanchored crane of underground power plant is demonstrated.更多还原