【摘要】 为考虑水工混凝土结构关键部位的损伤在外力及其他不利因素作用下,材料有可能会进一步劣化,损伤会进一步加剧,不同部位的损伤或不同周围环境对结构整体损伤概率具有不同影响,定义局部损伤劣化系数来反映损伤部位、受力水平、不利环境的影响。总结不同结构的局部损伤特点,根据水利水电工程分项系数极限状态设计方法中的结构重要性系数与失效概率的关系,制定了拱坝、重力坝、水闸局部损伤劣化系数的三等级分级原则,初步确定了与局部损伤劣化系数相对应的损伤部位及周围环境。更多还原

【Abstract】 There are often damages at the important location of hydraulic concrete structure.When the damages are under internal force and unfavourable factors,the material of the structure may be deteriorated further,and the damages may be developed further.The damages of different locations and different environments have different influence on the safety of overall structure.Therefore,the deterioration coefficient of local damage is defined to reflect the influence of damage location,force and unfavourable factors.Here,the damge features of arch dam,gravity dam and sluice are analyzed.According to the design method of limit state through the influence factors about hydraulic and water-power engineerings,the relation of important factor and failure probability is analyzed,and the principle of three levels is presented about the influence coefficient of local damage as mentioned above.Based on these,the corresponding deterioration coefficient,damage location and environment are determined initially.更多还原