CAJ | 학술논문

针对混凝土重力坝失效路径具有方向性，可认为类似于渗流通道的特性，提出基于二维逾渗相变重整化群的混凝土重力坝断面破坏评价方法。在传统正方形单元等损伤概率逾渗模型的基础上，推导了正方形单元不等损伤概率模型，确定了梯形原胞、三角形原胞破坏情况，建立了三角形断面逾渗相变重整化群模型，并以某混凝土重力坝断面为例，针对上、中、下部不同单元损伤概率下的整体断面破坏概率进行比较研究。迭代计算结果表明，当单元损伤概率小于0.40时，大坝断面整体处于安全状态；当损伤概率在0.40~0.60时，整体安全性降低，结构由安全向整体破坏过渡；当损伤概率大于0.60时，整体安全性极低，此时若外界环境恶化，极有可能发生整体贯穿破坏。
침대혼응토중력패실효로경구유방향성，가인위유사우삼류통도적특성，제출기우이유유삼상변중정화군적혼응토중력패단면파배평개방법。재전통정방형단원등손상개솔유삼모형적기출상，추도료정방형단원불등손상개솔모형，학정료제형원포、삼각형원포파배정황，건립료삼각형단면유삼상변중정화군모형，병이모혼응토중력패단면위례，침대상、중、하부불동단원손상개솔하적정체단면파배개솔진행비교연구。질대계산결과표명，당단원손상개솔소우0.40시，대패단면정체처우안전상태；당손상개솔재0.40~0.60시，정체안전성강저，결구유안전향정체파배과도；당손상개솔대우0.60시，정체안전성겁저，차시약외계배경악화，겁유가능발생정체관천파배。
With regard to failure paths in concrete gravity dams, which have similar characteristics to seepage channels, the cross-section damage method for evaluating concrete gravity dams is proposed on the basis of a two-dimensional percolation transition renormalization group. First, according to the percolation transition model of square units with equal local damage probabilities, the unequal local damage probability model is determined. Then, the trapezoid and triangle primitive cell damage types are determined. The percolation transition model with triangular sections is established. Finally, taking a concrete gravity dam section as an example, the probability of cross-section damage is analyzed. The structure is divided into three parts:the upper, middle, and lower parts. The local damage probabilities of the three parts are unequal. The results of iterative calculation show that when the local damage probability is less than 0. 40, the dam section is safe. When it varies from 0. 40 to 0. 60, the overall safety decreases, with a transition from safe to damage overall. When the probability is greater than 0. 60, the overall safety is very low. Cross-section damage may occur if the external environment worsens.