{"title":"堰结构的多目标优化设计","authors":"R. Geressu, T. Tarekegn, E. Demissie","doi":"10.1680/jwama.22.00002","DOIUrl":null,"url":null,"abstract":"Diversion head works, also called weirs or barrages, are structures constructed across rivers or canals to store water or raise water level. The design of diversion weir structures involves calculating the depth, length and thickness parameters of the horizontal and sloping aprons and sheet pile cut-offs. The design parameters of a diversion weir structure, which have complex non-linear relationships, are determined traditionally using empirically derived recommendations and iterations to achieve structural stability against failures due to scour, uplift, sliding, piping and overturning. However, current design approaches do not explicitly explore the trade-offs between the many relevant design objectives; failing to reveal possibly superior designs. This article proposes a multi-objective optimization design approach for a diversion weir structure. The article also provides a free and open-source code that can be used as a design tool. The method is demonstrated on a stylised design problem. The results show the method reveals solutions with diverse balances of stability metrics and cost; with the optimal relationship of parameter values of components also varying based on the relative cost of sheet pile and apron construction materials. Key Points 1. Current design approaches for diversion structures on permeable media do not explore the trade-offs between the many relevant design objectives, failing to reveal possibly superior designs 2. A design formulation for multi-objective optimization of diversion weir structures is proposed. 3. Multi objective optimization achieves substantial improvement in stability of the structure and cost.","PeriodicalId":54569,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Water Management","volume":"516 1","pages":""},"PeriodicalIF":1.1000,"publicationDate":"2023-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Optimised multi-objective design of weir structures\",\"authors\":\"R. Geressu, T. Tarekegn, E. Demissie\",\"doi\":\"10.1680/jwama.22.00002\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Diversion head works, also called weirs or barrages, are structures constructed across rivers or canals to store water or raise water level. The design of diversion weir structures involves calculating the depth, length and thickness parameters of the horizontal and sloping aprons and sheet pile cut-offs. The design parameters of a diversion weir structure, which have complex non-linear relationships, are determined traditionally using empirically derived recommendations and iterations to achieve structural stability against failures due to scour, uplift, sliding, piping and overturning. However, current design approaches do not explicitly explore the trade-offs between the many relevant design objectives; failing to reveal possibly superior designs. This article proposes a multi-objective optimization design approach for a diversion weir structure. The article also provides a free and open-source code that can be used as a design tool. The method is demonstrated on a stylised design problem. The results show the method reveals solutions with diverse balances of stability metrics and cost; with the optimal relationship of parameter values of components also varying based on the relative cost of sheet pile and apron construction materials. Key Points 1. Current design approaches for diversion structures on permeable media do not explore the trade-offs between the many relevant design objectives, failing to reveal possibly superior designs 2. A design formulation for multi-objective optimization of diversion weir structures is proposed. 3. Multi objective optimization achieves substantial improvement in stability of the structure and cost.\",\"PeriodicalId\":54569,\"journal\":{\"name\":\"Proceedings of the Institution of Civil Engineers-Water Management\",\"volume\":\"516 1\",\"pages\":\"\"},\"PeriodicalIF\":1.1000,\"publicationDate\":\"2023-04-20\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Proceedings of the Institution of Civil Engineers-Water Management\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.1680/jwama.22.00002\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENGINEERING, CIVIL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the Institution of Civil Engineers-Water Management","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1680/jwama.22.00002","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}
Optimised multi-objective design of weir structures
Diversion head works, also called weirs or barrages, are structures constructed across rivers or canals to store water or raise water level. The design of diversion weir structures involves calculating the depth, length and thickness parameters of the horizontal and sloping aprons and sheet pile cut-offs. The design parameters of a diversion weir structure, which have complex non-linear relationships, are determined traditionally using empirically derived recommendations and iterations to achieve structural stability against failures due to scour, uplift, sliding, piping and overturning. However, current design approaches do not explicitly explore the trade-offs between the many relevant design objectives; failing to reveal possibly superior designs. This article proposes a multi-objective optimization design approach for a diversion weir structure. The article also provides a free and open-source code that can be used as a design tool. The method is demonstrated on a stylised design problem. The results show the method reveals solutions with diverse balances of stability metrics and cost; with the optimal relationship of parameter values of components also varying based on the relative cost of sheet pile and apron construction materials. Key Points 1. Current design approaches for diversion structures on permeable media do not explore the trade-offs between the many relevant design objectives, failing to reveal possibly superior designs 2. A design formulation for multi-objective optimization of diversion weir structures is proposed. 3. Multi objective optimization achieves substantial improvement in stability of the structure and cost.
期刊介绍:
Water Management publishes papers on all aspects of water treatment, water supply, river, wetland and catchment management, inland waterways and urban regeneration.
Topics covered: applied fluid dynamics and water (including supply, treatment and sewerage) and river engineering; together with the increasingly important fields of wetland and catchment management, groundwater and contaminated land, waterfront development and urban regeneration. The scope also covers hydroinformatics tools, risk and uncertainty methods, as well as environmental, social and economic issues relating to sustainable development.