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1、第24卷第1期海洋工程Vol124No112006年2月THEOCEANENGINEERINGFeb.2006文章编号:100529865(2006)0120014205圆弧面防波堤波浪力初步研究1,211,21,3谢世楞,李炎保,吴永强,谷汉斌(1.天津大学建筑工程学院,天津300072;2.中交第一航务工程勘察设计院,天津300222;3.交通部天津水运工程科学研究所,天津300456)摘要:圆弧面防波堤是在半圆形防波堤基础上开发的一种新型防波堤。首先通过与半圆形防波堤相同条件下的波浪试验,检验圆弧面防波堤的稳定性,并利用数值波浪水槽对圆弧面防波堤的水力特性进行初步研究,探求造
2、成圆弧面防波堤与半圆形防波堤波浪力差别的主要原因。通过圆弧面防波堤与半圆形防波堤波浪力的对比试验,提出了圆弧面防波堤波浪力的简化计算方法,以半圆堤正向水平波浪力乘以一修正系数,在堤顶淹没情况下修正系数可取1.3,在堤顶出水情况下修正系数可取1.1。关键词:圆弧面防波堤;半圆形防波堤;波浪力;计算方法中图分类号:U65612文献标识码:APreliminaryresearchonwaveforcesonquartercircularbreakwater1,211,21,3XIEShi2leng,LIYan2bao,WUYong2qiang,GUHan2bin(1.SchoolofCi
3、vilEngineering,TianjinUniversity,Tianjin300072,China;2.ChinaCommunicationsFirstDesignInstituteofNavigationEn2gineering,Tianjin300222,China;3.TianjinResearchInstituteofWaterTransportEngineering,Tianjin300456,China)Abstract:Thequartercircularbreakwaterisanewtypebreakwaterdevelopedonthebasisofthe
4、semi2circularbreakwater.Thistypeofbreak2wateriscomposedofaquartercircularfrontwall,ahorizontalbaseslabandaverticalrearwall,thewidthofwhichisaboutonehalfofthatofthesemi2circularbreakwater,suitabletobeusedonrelativelyfirmsoilfoundation.Theengineeringquantityoftherubblemoundfoundationofthisnewtyp
5、eofbreakwatercanbereduced.Thestabilityofthequartercircularbreakwaterisexaminedbywavemodeltestswiththesameconditionasthesemi2circularbreakwateroption.Thenumericalwaveflumeisusedtostudythehydrauliccharacteristicsofthequartercircularbreakwaterpreliminarilyinordertofindoutthemainreasonforthediffer
6、enceofwaveforcesonthequartercircularbreakwaterandonthese2mi2circularone.Basedoncomparisontestsofwaveforcesactingonthesetwotypesofbreakwaters,asimplifiedcalculationmethodofwaveforcesonthequartercircularbreakwaterisproposed:thehorizontalwaveforcecanbeexpressedbyapplyingamodificationcoefficientto
7、thatforthesemi2circularbreakwater.Themodificationcoefficientcanbetakenas1.3forsubmergedconditionor1.1forthebreakwaterwithafreeboard.Keywords:quartercircularbreakwater;semi2circularbreakwater;waveforces;calculationmethod[1～3]圆弧面防波堤是在半圆形防
