不同选样方法设计暴雨重现期衔接关系探讨  

Study on Convergence of Rainstorm Return Periods and Different Sampling Methods

作　　者：黄国如[1,2] 曾娇娇 张明珠 武传号 刘浩 

机构地区：[1]华南理工大学土木与交通学院,广东广州510640 [2]华南理工大学亚热带建筑科学国家重点实验室,广东广州510640 [3]广州市水务科学研究所,广东广州510220

出　　处：《水利与建筑工程学报》2015年第1期30-35,41,共7页Journal of Water Resources and Architectural Engineering

基　　金：广州市水务科技项目(GZSW-201309);水利部公益性行业科研专项经费项目(201301093;201401048);华南理工大学亚热带建筑科学国家重点实验室自主研究课题项目(2014ZC09)

摘　　要：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^5a)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。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 .

关 键 词：暴雨强度公式 年最大值法 年多个样法 频率分布 重现期衔接 

分 类 号：P333.2[天文地球—水文科学]