Strut-and-Tie Model-Based Prestress Design for the Cable–Pylon Anchorage Zone of Cable-Stayed Bridges
Abstract Due to its complex geometry and mechanical behavior, the prestress design of the cable–pylon anchorage zone is difficult to achieve but critical. In this paper, the use of the strut-and-tie model (STM) is evaluated to simplify the cable–pylon anchorage zone design. The traditional Evolution...
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Veröffentlicht in: | Journal of bridge engineering 2021-09, Vol.26 (9) |
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creator | Li, Shengyu Lim, Erwin Shen, Linbai Hong, Yu Pu, Qianhui |
description | Abstract
Due to its complex geometry and mechanical behavior, the prestress design of the cable–pylon anchorage zone is difficult to achieve but critical. In this paper, the use of the strut-and-tie model (STM) is evaluated to simplify the cable–pylon anchorage zone design. The traditional Evolutionary Structural Optimization (ESO) method is first used to generate the STM of a common one-box two-cell cable–pylon anchorage zone. However, the resulting STM is shown to be irrational by comparison with the real distribution of principal stress in the cable–pylon anchorage zone. Therefore, this paper proposes a tailored ESO method using a modified algorithm for the removal criterion based on the strain energy of the element. The proposed method is shown to overcome the drawback of the classical ESO method that some elements playing key roles in the distribution of principal stress, but having small von Mises stresses, may be deleted mistakenly. The prestress design of the Cao’e River Bridge is then presented using the correct STM generated by the tailored ESO method as a practical example. Finally, the rationality of the resulting prestress design of the cable–pylon anchorage zone is substantiated using the results of a full-scale model test. |
doi_str_mv | 10.1061/(ASCE)BE.1943-5592.0001771 |
format | Article |
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Due to its complex geometry and mechanical behavior, the prestress design of the cable–pylon anchorage zone is difficult to achieve but critical. In this paper, the use of the strut-and-tie model (STM) is evaluated to simplify the cable–pylon anchorage zone design. The traditional Evolutionary Structural Optimization (ESO) method is first used to generate the STM of a common one-box two-cell cable–pylon anchorage zone. However, the resulting STM is shown to be irrational by comparison with the real distribution of principal stress in the cable–pylon anchorage zone. Therefore, this paper proposes a tailored ESO method using a modified algorithm for the removal criterion based on the strain energy of the element. The proposed method is shown to overcome the drawback of the classical ESO method that some elements playing key roles in the distribution of principal stress, but having small von Mises stresses, may be deleted mistakenly. The prestress design of the Cao’e River Bridge is then presented using the correct STM generated by the tailored ESO method as a practical example. Finally, the rationality of the resulting prestress design of the cable–pylon anchorage zone is substantiated using the results of a full-scale model test.</description><identifier>ISSN: 1084-0702</identifier><identifier>EISSN: 1943-5592</identifier><identifier>DOI: 10.1061/(ASCE)BE.1943-5592.0001771</identifier><language>eng</language><publisher>New York: American Society of Civil Engineers</publisher><subject>Algorithms ; Anchorages ; Bridge construction ; Cable-stayed bridges ; Civil engineering ; Design ; Design optimization ; Distribution ; Mechanical properties ; Model testing ; Prestressing ; Scale models ; Stress concentration ; Strut and tie models ; Technical Papers</subject><ispartof>Journal of bridge engineering, 2021-09, Vol.26 (9)</ispartof><rights>2021 American Society of Civil Engineers</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a267t-da5ce847a414ef733984f2bac0c7153d6d0db02f5bdc4233ec8f37d1b406b2333</citedby><cites>FETCH-LOGICAL-a267t-da5ce847a414ef733984f2bac0c7153d6d0db02f5bdc4233ec8f37d1b406b2333</cites><orcidid>0000-0002-6117-9281</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttp://ascelibrary.org/doi/pdf/10.1061/(ASCE)BE.1943-5592.0001771$$EPDF$$P50$$Gasce$$H</linktopdf><linktohtml>$$Uhttp://ascelibrary.org/doi/abs/10.1061/(ASCE)BE.1943-5592.0001771$$EHTML$$P50$$Gasce$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,76193,76201</link.rule.ids></links><search><creatorcontrib>Li, Shengyu</creatorcontrib><creatorcontrib>Lim, Erwin</creatorcontrib><creatorcontrib>Shen, Linbai</creatorcontrib><creatorcontrib>Hong, Yu</creatorcontrib><creatorcontrib>Pu, Qianhui</creatorcontrib><title>Strut-and-Tie Model-Based Prestress Design for the Cable–Pylon Anchorage Zone of Cable-Stayed Bridges</title><title>Journal of bridge engineering</title><description>Abstract
Due to its complex geometry and mechanical behavior, the prestress design of the cable–pylon anchorage zone is difficult to achieve but critical. In this paper, the use of the strut-and-tie model (STM) is evaluated to simplify the cable–pylon anchorage zone design. The traditional Evolutionary Structural Optimization (ESO) method is first used to generate the STM of a common one-box two-cell cable–pylon anchorage zone. However, the resulting STM is shown to be irrational by comparison with the real distribution of principal stress in the cable–pylon anchorage zone. Therefore, this paper proposes a tailored ESO method using a modified algorithm for the removal criterion based on the strain energy of the element. The proposed method is shown to overcome the drawback of the classical ESO method that some elements playing key roles in the distribution of principal stress, but having small von Mises stresses, may be deleted mistakenly. The prestress design of the Cao’e River Bridge is then presented using the correct STM generated by the tailored ESO method as a practical example. Finally, the rationality of the resulting prestress design of the cable–pylon anchorage zone is substantiated using the results of a full-scale model test.</description><subject>Algorithms</subject><subject>Anchorages</subject><subject>Bridge construction</subject><subject>Cable-stayed bridges</subject><subject>Civil engineering</subject><subject>Design</subject><subject>Design optimization</subject><subject>Distribution</subject><subject>Mechanical properties</subject><subject>Model testing</subject><subject>Prestressing</subject><subject>Scale models</subject><subject>Stress concentration</subject><subject>Strut and tie models</subject><subject>Technical Papers</subject><issn>1084-0702</issn><issn>1943-5592</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNp1kL1OwzAUhSMEEqXwDhYsMLjYsRMnbE0IP1IRlVoWFsuJnTRViIudDt14B96QJ8FRCkwMV77XPudc-fO8c4wmGIX4-nK6SLOrJJvgmBIYBLE_QQhhxvCBN_q9O3Q9iihEDPnH3om1a6ehYUxGXrXozLaDopVwWSvwpKVqYCKskmBulO1cWXCrbF21oNQGdCsFUpE36uvjc75rdAumbbHSRlQKvOpWAV0O73DRiZ1LSUwtK2VPvaNSNFad7c-x93KXLdMHOHu-f0ynMyj8kHVQiqBQEWWCYqpKRkgc0dLPRYEKhgMiQ4lkjvwyyGVBfUJUEZWESZxTFOZuJmPvYsjdGP2-dR_ga701rVvJ_SBAlEWOjlPdDKrCaGuNKvnG1G_C7DhGvAfLeQ-WJxnvIfIeIt-DdeZwMAtbqL_4H-f_xm9RGn0d</recordid><startdate>20210901</startdate><enddate>20210901</enddate><creator>Li, Shengyu</creator><creator>Lim, Erwin</creator><creator>Shen, Linbai</creator><creator>Hong, Yu</creator><creator>Pu, Qianhui</creator><general>American Society of Civil Engineers</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QH</scope><scope>7TN</scope><scope>7UA</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>FR3</scope><scope>H96</scope><scope>KR7</scope><scope>L.G</scope><orcidid>https://orcid.org/0000-0002-6117-9281</orcidid></search><sort><creationdate>20210901</creationdate><title>Strut-and-Tie Model-Based Prestress Design for the Cable–Pylon Anchorage Zone of Cable-Stayed Bridges</title><author>Li, Shengyu ; Lim, Erwin ; Shen, Linbai ; Hong, Yu ; Pu, Qianhui</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a267t-da5ce847a414ef733984f2bac0c7153d6d0db02f5bdc4233ec8f37d1b406b2333</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Algorithms</topic><topic>Anchorages</topic><topic>Bridge construction</topic><topic>Cable-stayed bridges</topic><topic>Civil engineering</topic><topic>Design</topic><topic>Design optimization</topic><topic>Distribution</topic><topic>Mechanical properties</topic><topic>Model testing</topic><topic>Prestressing</topic><topic>Scale models</topic><topic>Stress concentration</topic><topic>Strut and tie models</topic><topic>Technical Papers</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Li, Shengyu</creatorcontrib><creatorcontrib>Lim, Erwin</creatorcontrib><creatorcontrib>Shen, Linbai</creatorcontrib><creatorcontrib>Hong, Yu</creatorcontrib><creatorcontrib>Pu, Qianhui</creatorcontrib><collection>CrossRef</collection><collection>Aqualine</collection><collection>Oceanic Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Civil Engineering Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><jtitle>Journal of bridge engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Li, Shengyu</au><au>Lim, Erwin</au><au>Shen, Linbai</au><au>Hong, Yu</au><au>Pu, Qianhui</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Strut-and-Tie Model-Based Prestress Design for the Cable–Pylon Anchorage Zone of Cable-Stayed Bridges</atitle><jtitle>Journal of bridge engineering</jtitle><date>2021-09-01</date><risdate>2021</risdate><volume>26</volume><issue>9</issue><issn>1084-0702</issn><eissn>1943-5592</eissn><abstract>Abstract
Due to its complex geometry and mechanical behavior, the prestress design of the cable–pylon anchorage zone is difficult to achieve but critical. In this paper, the use of the strut-and-tie model (STM) is evaluated to simplify the cable–pylon anchorage zone design. The traditional Evolutionary Structural Optimization (ESO) method is first used to generate the STM of a common one-box two-cell cable–pylon anchorage zone. However, the resulting STM is shown to be irrational by comparison with the real distribution of principal stress in the cable–pylon anchorage zone. Therefore, this paper proposes a tailored ESO method using a modified algorithm for the removal criterion based on the strain energy of the element. The proposed method is shown to overcome the drawback of the classical ESO method that some elements playing key roles in the distribution of principal stress, but having small von Mises stresses, may be deleted mistakenly. The prestress design of the Cao’e River Bridge is then presented using the correct STM generated by the tailored ESO method as a practical example. Finally, the rationality of the resulting prestress design of the cable–pylon anchorage zone is substantiated using the results of a full-scale model test.</abstract><cop>New York</cop><pub>American Society of Civil Engineers</pub><doi>10.1061/(ASCE)BE.1943-5592.0001771</doi><orcidid>https://orcid.org/0000-0002-6117-9281</orcidid></addata></record> |
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subjects | Algorithms Anchorages Bridge construction Cable-stayed bridges Civil engineering Design Design optimization Distribution Mechanical properties Model testing Prestressing Scale models Stress concentration Strut and tie models Technical Papers |
title | Strut-and-Tie Model-Based Prestress Design for the Cable–Pylon Anchorage Zone of Cable-Stayed Bridges |
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