CAJ | 학술논문

拱坝整体稳定评价方法主要有水密度超载法，水位超载法，降强法及结合降强及超载法的综合法。结合目前世界最高的碾压混凝土高拱坝-万家口子，用数值计算得到每种方法下的拱坝破坏过程。通过对不同计算方法下加载方式、破坏机理的对比，分析不同方法超载系数不同的原因：水密度超载法荷载主要加在下部，超载系数反映坝体下部超载能力，用此方法得到的超载系数较大；水位超载法，降强法，综合法超载系数反映坝体中上部的超载能力，一般得到的超载系数较小。目前超载计算方法不够明确、规范，建议规范、统一超载计算方法，使得计算结果有可比性，方便同类工程安全度评价结果的参考。
공패정체은정평개방법주요유수밀도초재법，수위초재법，강강법급결합강강급초재법적종합법。결합목전세계최고적년압혼응토고공패-만가구자，용수치계산득도매충방법하적공패파배과정。통과대불동계산방법하가재방식、파배궤리적대비，분석불동방법초재계수불동적원인：수밀도초재법하재주요가재하부，초재계수반영패체하부초재능력，용차방법득도적초재계수교대；수위초재법，강강법，종합법초재계수반영패체중상부적초재능력，일반득도적초재계수교소。목전초재계산방법불구명학、규범，건의규범、통일초재계산방법，사득계산결과유가비성，방편동류공정안전도평개결과적삼고。
Water specific gravity overload method, water-level overload method, strength reduction method and comprehensive method are the essential methods for evaluating the integrated safety of arch dams. Taking the Wanjiakouzi, the highest arch dam in the world as a background, a numeri-cal analysis is conducted to model the destroying process corresponding to each method. It is found that the overload forces are mainly loaded on the lower part of a dam for the first method, which mainly reflects the bearing capacity of lower part of a dam, and the method usually leads to a larger overload factor. The results of other methods show the overload capacity of top and middle parts of a dam, and the factors are smaller than that given by the first method. At present, the methods to e-valuate the integrated safety of arch dams are not yet clearly defined. They should be explicitly de-fined to allow the comparison of overload factor among different arch dams.