【摘要】 为了给寒区水库护坡抗冰冻设计提供依据,以冰板为研究对象,考虑冰板的破坏特征、性质及冰板形成过程中存在的大量缺陷,应用断裂力学理论研究冰板的挤压破坏极限应力,据此确立冰压力的计算方法。算例计算结果表明:冰板挤压破坏具有脆性特征,冰压力随着冰厚的增加而增大;在冰厚相同条件下,冰压力计算值与标准值和实测值基本吻合;冰压力计算公式能够反映冰压力形成过程的物理本质,符合实际情况。更多还原

【Abstract】 In order to provide a basis for anti-freezing design of reservoir revetments in cold regions,ice limit pressure of extruded ice plates was studied using the fracture mechanics theories with the consideration of failure characteristics and inner defects of the ice plates.Then,a calculation method of the ice pressure was developed.The calculated results show that the ice plate extrusion failure demonstrates brittle characteristics,and ice pressures increase with the increase of the ice plate thickness.With the same ice thickness,calculated values of the ice pressure are in good agreement with its standard values and measured values.The calculation method of the ice pressure can reflect the physical nature of ice pressure forming process,and is accord with the facts.更多还原