CAJ | 학술논문

目前国内推行采用年最大值法进行短历时暴雨选样，为了解决年最大值法选样在小重现期（1a～5 a）内暴雨强度设计值明显偏小以及设计重现期的衔接问题，以广州市设计暴雨为例，采用不同频率分布模型对年最大值法及年多个样法进行频率分布适线，得到不同情形下的暴雨强度公式。结果表明，虽然不同频率分布模型对两种选样方法的衔接关系有较大影响，但转换的年最大值法可在一定程度上改进由年最大值选样引起的小重现期暴雨强度较小的问题，同时也可解决室外排水工程常用设计重现期统一问题。
목전국내추행채용년최대치법진행단력시폭우선양，위료해결년최대치법선양재소중현기（1a～5 a）내폭우강도설계치명현편소이급설계중현기적함접문제，이엄주시설계폭우위례，채용불동빈솔분포모형대년최대치법급년다개양법진행빈솔분포괄선，득도불동정형하적폭우강도공식。결과표명，수연불동빈솔분포모형대량충선양방법적함접관계유교대영향，단전환적년최대치법가재일정정도상개진유년최대치선양인기적소중현기폭우강도교소적문제，동시야가해결실외배수공정상용설계중현기통일문제。
The annual maximum method is recommended in short duration storm sampling in our country ,which brings the problem that the storm intensity designed using this method is significantly smaller in the small return period (1 a~5 a ) ,and the convergence of the designed return periods are not sound .In order to solve this problem ,different frequen-cy distribution model were adopted to fit the annual maximum series (AMS ) and the annual multi-peak series (AMPS ) in the rainstorm designing of Guangzhou .And then the storm intensity formula under various circumstances was obtained . The results indicate that different frequency distribution models have great impacts on the convergence between the two sampling methods .However the improved annual maximum method can improve the problem of small storm intensity in small return period to some extent ,as well as unifies the return periods which are commonly used in the designing of out-door drainage works .