내진보강 단면형상에 따른 저수지 제방 안전율 특성

Abstract

Although agricultural reservoirs function as benefits for people by providing agricultural water and reduced effects of flood damage as well as rest places as huge engineering structures created by people, enormous human and property damages would be accrued if collapse caused by old reservoir and earthquake may require high repair costs. Thus, prevention is crucial. Embankment stability is affected by field material properties such as soil parameter values of granular materials that compose the embankment. However, there is a limitation to determine a safety factor of the final embankment solely based on its material property since precise safety diagnosis or ordinary literature values are applied. Precise contemplation is needed when you review reinforced cross-sections as a safety factor is determined by material property value and embankment forms and the latter considerably influences safety factor. This study therefore aims at allowing reasonable economical design of the reinforced cross-section through repeated reviews by using Slope-W program to analyze cases reasonable and economical reinforced cross-sections in earthquake-resistant design of “OO reservoir” in Goheung-gun. Results from this analysis are presented as follows.

1. This study by differentiating the reinforced cross-section of banks revealed that as riprap reinforced cross-section enlarges, safety factor was ensured according to forms of reinforced cross section despite small reinforced cross sections contrary to the general notion that safety factor is guaranteed as riprap reinforced cross section increases.

2. This study identified that improved reinforcement by putting weight on the lower part rather than reinforcing it by adding more weights on the entire slop including the upper part when determining forms of the reinforced cross section of banks can minimize reinforced cross section, thereby promoting economical earthquake-resistant reinforcement design.

3. Although most parts may not show cross-section models by putting weights on downstream slops in case of earthquake-resistant reinforcement identified in this study according to the purpose and other details on riprap reinforcment, a notion on cross section form that guarantees both safety and economic feasibility in case of earthquake-resistant design is assumed to be significant.