大塘口空腹式双曲拱渡槽安全评价分析  

Safety Evaluation Analysis of Datangkou Hollow-type Double Curved Arch Aqueduct

作　　者：邓成发[1,2] 余军军 来晟[3] 李洪强 DENG Cheng-fa;YU Jun-jun;LAI Sheng;LI Hong-qiang(Zhejiang Institute of Hydraulics & Estuary,Hangzhou 310020,China;Zhejiang Water Conservancy and Hydropower College,Hangzhou 310018,China;Zhejiang Guangchuan Engineering Consultation Co. Ltd.,Hangzhou 310020, China)

机构地区：[1]浙江省水利河口研究院,浙江杭州310020 [2]浙江省水利防灾减灾重点实验室,浙江杭州310018 [3]浙江广川工程咨询有限公司,浙江杭州310020

出　　处：《水电能源科学》2019年第7期70-73,共4页Water Resources and Power

基　　金：浙江省基础公益研究计划项目(GF18E090006)

摘　　要：对危旧渡槽进行安全鉴定并分析其安全状态,为下一步加固或重建提供科学依据尤为重要。以运行40年的大塘口空腹式双曲拱渡槽为例,采用现状调查分析、地质勘察、现场安全检测、水力要素复核及结构安全复核等方法,评价了渡槽工程质量、水力要素及结构安全性。结果表明,渡槽存在一定质量缺陷,工程质量分级为B;渡槽过流能力不满足规范要求,水力要素分级为C;主拱圈拱脚偏心距及抗裂不满足规范要求,支承结构安全分级为B;渡槽地基基础满足规范要求,安全分级为A。因此,评定大塘口渡槽安全类别为三类渡槽。It is an urgent task to appraise the safety of the old aqueduct and analyze its safety status so as to provide scientific basis for further reinforcement or reconstruction.Taking the Datangkou hollow-type double curved arch aqueduct for running 40 years as the object of study,the engineering quality,hydraulic elements and structural safety of the aqueduct were evaluated by means of investigation and analysis,geological investigation,site safety inspection,hydraulic elements and structural safety check methods.The results show that the aqueduct has certain quality defects,and the engineering quality is classified as level " B";The aqueduct flow capacity does not meet the requirements of the specifications,and the hydraulic elements are classified as level " C";The arch foot eccentricity and crack resistance of the main arch ring do not meet the requirements of the specifications,and the supporting structure is classified as level " B";The aqueduct foundation meets the requirements of the specifications,and the safety classification reaches grade " A".Therefore,the safety classification of the Datangkou aqueduct is classified into the third category of aqueducts.

关 键 词：双曲拱渡槽 安全评价 三维激光扫描 支承结构 

分 类 号：TV67[水利工程—水利水电工程] TV882.1