Enlarging Effects and Economical Optimum Design of Inclined-type Core Structure for Heightening Reservoir Dam

摘要

Recently, the heightened reservoir dams in South Korea are beingincreased nationwide to prevent disasters and to secure water resourcesin the future. An inclined-type core structure may have the technical,permeable, and seismic subject due to the differential settlement anddeformation caused by the static and/or dynamic behavior of materialsused for heightening work and the existing materials compared to otherheightening methods. Thus, the authors have proposed the coreenlarging method at the old and new core joint and it has been clarifiedin previous studies that it is a means of structural reinforcement of thecore joint.However, the optimal enlarging core structure scale for the site must bedetermined to assess whether enlarging the core is not only structurallybut also economically feasible as a means to heighten the reservoirdams for securing future water resources by elapsed time.Therefore, in this study, the water price range that considers aneffective design for construction-leakage loss cost according to the coreenlargement was discussed in relation to the optimal scale of aheightened inclined core.As a result, the procedure to decide the optimal core joint scale fordesigning an inclined-type heightened dam based on both structural andeconomical concepts can be proposed.