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学号200631580223密级武汉大学本科毕业生论文白莲河龙潭冲(拱式)渡槽设计二○一○年六月BACHELOR'SDEGREETHESISOFWUHANUNIVERSITYTheaqueductdesignofLongTanChongBaiLianRiverJune2010郑重声明本人呈交的学位论文，是在导师的指导下，独立进行研究工作所取得的成果，所有数据、图片资料真实可靠。尽我所知，除文中已经注明引用的内容外，本学位论文的研究成果不包含他人享有著作权的内容。对本论文所涉及的研究工作做出贡献的其他个人和集体，均已在文中以明确的方式标明。本学位论文的知识产权归属于培养单位。本人签名：日期：摘要龙潭冲渡槽位于湖北省浠水县白莲河灌区西干渠上游处，桩号为1+800，竣工年限在1961年~1962年，经过三十多年的运行，该渡槽出现严重的老化问题，加之灌区面积增加和流量增大，该渡槽已远远不能担负输水灌溉的任务，根据白莲河水库灌区续建配套与节水改造规划成果(2003年），要求重建白莲河渡槽。考虑到原渡槽所在渠道位于一较大的冲谷处，该段渠道在山洪期间常受洪水危胁。经灌区重新规划，将原山谷下的沿山渠道进行截弯取直，在截弯处新建新的龙潭冲渡槽，工程为III等工程，主要建筑物为3级。新建的渡槽采用矩形拱式渡槽，拱跨87m，共两跨，槽底宽为4.0m，侧墙高3.92m，设有间距为1.5m，高为0.1m的拉杆，考虑到交通要求，还设有1m宽的人行板。本设计布置等跨的间距为15m的单排架共12跨，与渐变段连接处采用浆砌石槽台。排架与地基的连接采用整体基础。槽身、排架、拱圈以及基础采用预制吊装形式。关键词：渡槽；悬链线无铰拱；排架；ABSTRACTTheaqueductofLongtanChongislocatedinupstreamofthewestmaincanal,thepilenumberis1+800,completionoffixednumberofyearfrom1961~1962.After30yearsofrunning,theaqueductappearedseriousagingproblems,inadditionoftheirrigationareaandrateofflowincreased,theaqueductcannottakethetaskforirrigationanymore,requestingreconstructionoftheBailianRiveraqueduct.Inconsiderationofthechanneloftheoriginalaqueductwaslocatedinahugevalley,itwasoftenthreatenedbyfloodduringthatperiodofchannelsinflashfloods.Aftertheirrigationdistrictplanning,ThechanneloriginalValleychannelbybentintostraight,thenewaqueductwillbebuiltincurved,engineeringprojectssuchastheIII,themainbuildingtothelevel3.Thenewaqueductusedrectangulararchaqueduct,thearchspanis87m,therewillbedoublecrosses,theaqueductatthebottomofawidthof4.0m，sidewallheight3.92m，setaspacingof1.5m,theleverofthehigh-0.1m.Consideringthetrafficrequirements,alsohas1mwidesidewalks.Thisdesignlayout,etc.acrossa15mof12single-bentcross,withthetransitionsectionjunctionwithmasonrystonerunnelpier,bentandgroundconnectionwithoverallfoundation,Aqueduct,bent,Arch,andtheunderlyinguseofprefabricatedliftingform.Keywords:Aqueduct;Catenarywithouthingearch;Bent;目录0.1、研究背景及意义...................................................................................10.2、国内外关于渡槽设计课题的研究现状和发展趋势...........................10.3、毕业设计的基本要求及本设计主要内容...........................................3一、设计基本资料................................................................................................41.1、工程概况综合说明...............................................................................41.2、水文气象...............................................................................................41.3、工程地质...............................................................................................41.4、工程任务与规模...................................................................................41.5、上、下游渠道资料...............................................................................51.6、建筑材料及安全系数...........................................................................51.7、设计要求...............................................................................................61.8、毕业设计参考书目...............................................................................6二、渡槽的水力计算............................................................................................72.1、渠道断面的水力计算...........................................................................72.2、槽身过水能力计算...............................................................................72.3、水头损失及水面衔接计算...................................................................92.3.1、进口渐变段水面降落值：........................................................92.3.2、槽身段水面降落值：..............................................................102.3.3、出口渐变段水面回升值：......................................................102.3.4、总水头损失..............................................................................102.3.5、进、出口高程的确定：..........................................................102.4、通过设计流量时的水面衔接情况检查和超高检查.......................112.4.1、进口水面衔接检查..................................................................112.4.2、出口水面衔接情况检查：......................................................112.4.5、复核水面超高..........................................................................122.4.6、渐变段布置..............................................................................12三、槽身结构计算..............................................................................................133.1、纵向结构计算.....................................................................................133.1.1、槽身剖面形式及尺寸拟定......................................................133.1.2、各类系数的确定......................................................................133.1.3、荷载计算..................................................................................143.1.4、纵向内力计算..........................................................................153.1.5、配筋计算..................................................................................163.1.6、抗裂校核..................................................................................173.2、横向结构计算.....................................................................................203.2.1、荷载计算............................................