{"title":"对弹性阶段水下振动台试验中按比例模型设计的模拟法适用性的评估","authors":"Qinghua Han , Mengyu Li , Zhongxing Wang","doi":"10.1016/j.apor.2024.104252","DOIUrl":null,"url":null,"abstract":"<div><div>This paper presents a comprehensive evaluation on the applicability of similitude laws for scaled model design in underwater shaking table (UST) model tests. Scaled models of a sea-crossing bridge pier were first designed in this study, considering five similitude laws and adopting different values of key scale factors for each similitude law. Following this, an extensive numerical database of both prototype and scaled model responses was generated based on validated numerical models, considering structures under pure earthquake (E), earthquakes in still water (ES) as well as coupled earthquake and wave-current actions (EWC). The obtained numerical results were first utilized to investigate the influence of key scale factors on predicted responses. It has been found that density and acceleration distortion lead to underestimation of predicted responses, while geometry distortion results in amplifying predictions. Furthermore, the applicability of similitude laws for designing scaled models was evaluated underpinned by the numerical database. The evaluation results provided suggestions for the proper design of scaled models under different loading conditions, regarding the selection and implementation of similitude laws.</div></div>","PeriodicalId":8261,"journal":{"name":"Applied Ocean Research","volume":"153 ","pages":"Article 104252"},"PeriodicalIF":4.3000,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Evaluation on the applicability of similitude laws for scaled model design in underwater shaking table tests in the elastic stage\",\"authors\":\"Qinghua Han , Mengyu Li , Zhongxing Wang\",\"doi\":\"10.1016/j.apor.2024.104252\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This paper presents a comprehensive evaluation on the applicability of similitude laws for scaled model design in underwater shaking table (UST) model tests. Scaled models of a sea-crossing bridge pier were first designed in this study, considering five similitude laws and adopting different values of key scale factors for each similitude law. Following this, an extensive numerical database of both prototype and scaled model responses was generated based on validated numerical models, considering structures under pure earthquake (E), earthquakes in still water (ES) as well as coupled earthquake and wave-current actions (EWC). The obtained numerical results were first utilized to investigate the influence of key scale factors on predicted responses. It has been found that density and acceleration distortion lead to underestimation of predicted responses, while geometry distortion results in amplifying predictions. Furthermore, the applicability of similitude laws for designing scaled models was evaluated underpinned by the numerical database. The evaluation results provided suggestions for the proper design of scaled models under different loading conditions, regarding the selection and implementation of similitude laws.</div></div>\",\"PeriodicalId\":8261,\"journal\":{\"name\":\"Applied Ocean Research\",\"volume\":\"153 \",\"pages\":\"Article 104252\"},\"PeriodicalIF\":4.3000,\"publicationDate\":\"2024-10-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Ocean Research\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0141118724003730\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, OCEAN\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Ocean Research","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0141118724003730","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, OCEAN","Score":null,"Total":0}
Evaluation on the applicability of similitude laws for scaled model design in underwater shaking table tests in the elastic stage
This paper presents a comprehensive evaluation on the applicability of similitude laws for scaled model design in underwater shaking table (UST) model tests. Scaled models of a sea-crossing bridge pier were first designed in this study, considering five similitude laws and adopting different values of key scale factors for each similitude law. Following this, an extensive numerical database of both prototype and scaled model responses was generated based on validated numerical models, considering structures under pure earthquake (E), earthquakes in still water (ES) as well as coupled earthquake and wave-current actions (EWC). The obtained numerical results were first utilized to investigate the influence of key scale factors on predicted responses. It has been found that density and acceleration distortion lead to underestimation of predicted responses, while geometry distortion results in amplifying predictions. Furthermore, the applicability of similitude laws for designing scaled models was evaluated underpinned by the numerical database. The evaluation results provided suggestions for the proper design of scaled models under different loading conditions, regarding the selection and implementation of similitude laws.
期刊介绍:
The aim of Applied Ocean Research is to encourage the submission of papers that advance the state of knowledge in a range of topics relevant to ocean engineering.