{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T04:12:40Z","timestamp":1760242360461,"version":"build-2065373602"},"reference-count":26,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2017,5,28]],"date-time":"2017-05-28T00:00:00Z","timestamp":1495929600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Algorithms"],"abstract":"<jats:p>In order to relieve traffic congestion, irregularly-shaped bridges have been widely used in urban overpasses. However, the analysis on modal characteristics of irregularly-shaped bridges is not exhaustive, and the effect of design parameters on modal characteristics will be deeply investigated in future studies. In this paper, a novel strategy based on a free-interface mode synthesis algorithm is proposed to evaluate the parameters\u2019 effect on the modal characteristics of irregularly-shaped bridges. First, a complicated, irregularly-shaped bridge is divided into several substructures based on its properties. Then, the modal characteristics of the overall structure can be obtained, only by a few low-order modal parameters of each substructure, using a free-interface mode synthesis method. A numerical model of a typical irregularly-shaped bridge is employed to verify the effectiveness of the proposed strategy. Simulation results reveal that the free-interface mode synthesis method possesses favorable calculation accuracy for analyzing the modal characteristics of irregularly-shaped bridges. The effect of design parameters such as ramp curve radius, diaphragm beam stiffness, cross-section feature, and bearing conditions on the modal characteristics of an irregularly-shaped bridge is evaluated in detail. Analysis results can provide references for further research into and the design of irregularly-shaped bridges.<\/jats:p>","DOI":"10.3390\/a10020062","type":"journal-article","created":{"date-parts":[[2017,5,30]],"date-time":"2017-05-30T04:35:42Z","timestamp":1496118942000},"page":"62","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Influence Factors Analysis on the Modal Characteristics of Irregularly-Shaped Bridges Based on a Free-Interface Mode Synthesis Algorithm"],"prefix":"10.3390","volume":"10","author":[{"given":"Hanbing","family":"Liu","sequence":"first","affiliation":[{"name":"College of Transportation, Jilin University, Changchun 130025, China"}]},{"given":"Mengsu","family":"Zhang","sequence":"additional","affiliation":[{"name":"College of Transportation, Jilin University, Changchun 130025, China"}]},{"given":"Xianqiang","family":"Wang","sequence":"additional","affiliation":[{"name":"College of Transportation, Jilin University, Changchun 130025, China"}]},{"given":"Shuai","family":"Tian","sequence":"additional","affiliation":[{"name":"College of Transportation, Jilin University, Changchun 130025, China"}]},{"given":"Yubo","family":"Jiao","sequence":"additional","affiliation":[{"name":"College of Transportation, Jilin University, Changchun 130025, China"}]}],"member":"1968","published-online":{"date-parts":[[2017,5,28]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"695","DOI":"10.1016\/j.conbuildmat.2011.11.008","article-title":"Experimental study and numerical analysis of a composite bridge structure","volume":"30","author":"Lu","year":"2012","journal-title":"Constr. 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