{"title":"斜拉桥斜拉桥拉索受力试验研究","authors":"Magdaléna Boháčová","doi":"10.14311/app.2023.40.0001","DOIUrl":null,"url":null,"abstract":"The topic of this paper is an experimental analysis of the dynamic behaviour of stays of an existing footbridge focusing on determination of the tensile forces in stays. The examined structure was the footbridge across the Vltava river in Lužec nad Vltavou. It is a cable-stayed footbridge, the horizontal load-bearing structure consists of UHPC components, which are prestressed by a pair of external cables. The horizontal load-bearing structure is suspended on a 39.85 m high A-shaped steel pylon by means of a system of 17 pairs of stays. As a part of the work the tensile forces in stays were determined using the vibration frequency method. The method is based on the knowledge of natural frequencies of the stays, which were investigated by the experimental analysis.","PeriodicalId":7150,"journal":{"name":"Acta Polytechnica CTU Proceedings","volume":"132 8","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2023-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The experimental evaluation of tensile forces in stays of a cable-stayed footbridge\",\"authors\":\"Magdaléna Boháčová\",\"doi\":\"10.14311/app.2023.40.0001\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The topic of this paper is an experimental analysis of the dynamic behaviour of stays of an existing footbridge focusing on determination of the tensile forces in stays. The examined structure was the footbridge across the Vltava river in Lužec nad Vltavou. It is a cable-stayed footbridge, the horizontal load-bearing structure consists of UHPC components, which are prestressed by a pair of external cables. The horizontal load-bearing structure is suspended on a 39.85 m high A-shaped steel pylon by means of a system of 17 pairs of stays. As a part of the work the tensile forces in stays were determined using the vibration frequency method. The method is based on the knowledge of natural frequencies of the stays, which were investigated by the experimental analysis.\",\"PeriodicalId\":7150,\"journal\":{\"name\":\"Acta Polytechnica CTU Proceedings\",\"volume\":\"132 8\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-07-24\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Acta Polytechnica CTU Proceedings\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.14311/app.2023.40.0001\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta Polytechnica CTU Proceedings","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.14311/app.2023.40.0001","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
本文的主题是对现有人行桥斜拉索的动力特性进行实验分析，重点是确定斜拉索的拉伸力。被检查的结构是横跨伏尔塔瓦河Lužec nad Vltavou的人行桥。它是一座斜拉桥，水平承重结构由超高强度混凝土构件组成，由一对外部电缆预应力。水平承重结构通过17对拉索系统悬挂在39.85米高的a型钢塔上。作为工作的一部分，采用振动频率法确定了拉索的拉力。该方法基于对锚杆固有频率的了解，并通过实验分析进行了研究。
The experimental evaluation of tensile forces in stays of a cable-stayed footbridge
The topic of this paper is an experimental analysis of the dynamic behaviour of stays of an existing footbridge focusing on determination of the tensile forces in stays. The examined structure was the footbridge across the Vltava river in Lužec nad Vltavou. It is a cable-stayed footbridge, the horizontal load-bearing structure consists of UHPC components, which are prestressed by a pair of external cables. The horizontal load-bearing structure is suspended on a 39.85 m high A-shaped steel pylon by means of a system of 17 pairs of stays. As a part of the work the tensile forces in stays were determined using the vibration frequency method. The method is based on the knowledge of natural frequencies of the stays, which were investigated by the experimental analysis.
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