資源描述:
《長(zhǎng)歷時(shí)暴雨強(qiáng)度公式的推求方法》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫(kù)。
1、第31卷第5期河北工業(yè)科技VoI‘31,No.52014年9月HebeiJournalofIndustrialScienceandTechnologySept.2014文章編號(hào):1008—1534(2014)05—0378—06長(zhǎng)歷時(shí)暴雨強(qiáng)度公式的推求方法唐穎,周玉文,趙見(jiàn),王宏利,劉暢(北京工業(yè)大學(xué)建筑工程學(xué)院,北京100124)摘要:近年來(lái),隨著極端暴雨事件的出現(xiàn),導(dǎo)致城市內(nèi)澇災(zāi)害頻繁發(fā)生,原有降雨歷時(shí)僅為2h的市政排水設(shè)計(jì)暴雨強(qiáng)度公式已無(wú)法滿(mǎn)足城市暴雨設(shè)計(jì)的需求,因此就要延長(zhǎng)暴雨采樣歷時(shí),推求出長(zhǎng)歷時(shí)(24h)
2、暴雨強(qiáng)度公式。針對(duì)以上問(wèn)題,根據(jù)北京市提供的52a(1961—2012)原始降雨資料并進(jìn)行數(shù)字化處理,結(jié)合水利的長(zhǎng)歷時(shí)特點(diǎn),采用兼顧市政排水,水利排澇,內(nèi)澇防治的采樣方法,應(yīng)用P一Ⅲ分布曲線進(jìn)行頻率分析后采用6種經(jīng)典方法推求暴雨強(qiáng)度公式的參數(shù)值,優(yōu)選出誤差最小且滿(mǎn)足規(guī)范要求的暴雨強(qiáng)度公式參數(shù)值,進(jìn)而推求長(zhǎng)歷時(shí)暴雨強(qiáng)度公式,在此基礎(chǔ)上與短歷時(shí)暴雨強(qiáng)度公式比較,分析兩者的差異,為城市雨水排除規(guī)劃設(shè)計(jì)提供科學(xué)依據(jù)和參考。關(guān)鍵詞:選樣方法;頻率分析;重現(xiàn)期;暴雨強(qiáng)度公式中圖分類(lèi)號(hào):TU992文獻(xiàn)標(biāo)志碼:Adoi:10.753
3、5/hbgykj.2014yx05004Derivationmethodforlong—durationstormintensityformulaTANGYing,ZHOUYuwen,Z'HAOJian,WANGHongli,LIUChang(CollegeofCivilEngineering,BeijingUniversityofTechnology,Beijing100124,China)Abstract:Inrecentyears,withtheemergenceofextremestormeventswhic
4、hcausefrequentlyurbanwaterloggingdisasters,theoriginalmunicipaldrainagedesignstormintensityformulaforonlytwo-hourraindurationcouldbeunabletomeettheneedsofurbanstormdesign,thereforethesamplingstormdurationshouldbeextendedand1ongduration(24hours)stormintensityfor
5、mulashouldbeobtained.Tosolvetheaboveproblems,accordingtooriginalrainfalldataofBeijingfor52years(1961—2012),whichisdigitallyprocessed,combinedwithlongdurationofthecharacteristicsofwaterconservancy,throughtheinte—gratedsamplingapproachofmunicipaldrainage,watercon
6、servancydrainageandwaterloggingprevention,p-HIdistributioncurveisusedforfrequencyanalysisandsixclassicalapproachesareusedtoobtaintheparametervaluesofstormintensityfor—mula.Theoptimalparametervaluesmeetingstandardsrequirementswithminimumerrorareselected,thenthed
7、erivelong-durationstormintensityformulaisobtained,whichiscomparedwithshort-durationrainfallintensity.Thedifferencebetweenthemisanalyzed,whichprovidesascientificbasisandreferencefortheplanninganddesignworkofurbanstormwaterdrainagesystem.Keywords:samplingmethod;f
8、requencyanalysis;returnperiod;stormintensityformula收稿13期:2014—04—11;修回日期:2014-05—04;責(zé)任編輯:馮民基金項(xiàng)目:Collaborativeresearchonfloodresilienceinurbanareas(244047)作者簡(jiǎn)介:唐穎(1988-),女,湖北