Abstract
Increased deformability can be considered as the basic disadvantage of suspension bridges. One of the ways to increase the rigidity of a suspension bridge is to transfer a part of stiffening girder rigidity to a suspension main cable. To give the suspension bridge more stable appearance, the authors propose to use the cables of varying bending stiffness. The main cables can be made of standard section shapes or have a composite section. The object of this work was to study a method for analyzing and determining the internal forces in the main cables and stiffening girder under static loading to provide recommendations for designing suspension bridges with stiffened cables. Simple formulas are presented for determining displacements, internal forces and stresses in the main cable and stiffening girder. Finite element modeling was performed. The final part of the paper discusses design procedures for such suspension systems. An example of a pedestrian suspension bridge is appended. Santrauka Esminis kabamuju tiltu trūkumas ‐ didelis ju deformatyvumas. Deformatyvumui sumažinti autoriai siūlo dali standumo sijos lenkiamojo standžio perduoti kabamajam lynui. Baigtinio lenkiamojo standumo lynai gali būti daromi iš standartiniu valcuotuju profiliuočiu arba sudetinio skerspjūvio. Šio darbo tikslas ‐ pateikti supaprastinta metodika kabamojo tilto standaus lyno ir standumo sijos elgsenos analizei atlikti bei rekomendacijas tokiems statiškai apkrautiems tiltams projektuoti. Pateiktos paprastos formules lyno ir sijos poslinkiams, iražoms ir itempiams apskaičiuoti. Atliktas kabamosios tilto siste‐mos modeliavimas baigtiniais elementais. Aptartos tokiu kabamuju tiltu projektavimo procedūros. Pateiktas pesčiuju via‐duko kabamuju konstrukciju projektavimo pavyzdys.
Highlights
Suspension bridges are the most important and attractive structures possessing a number of technical, economical and aesthetic advantages
This paper presents the results of theoretical analysis and finite element modeling of the influence of the stiffness of the main cables on the static behaviour of suspension bridges as well as recommendations for designing such bridges
The application of finite flexural rigidity cables for suspension bridges using standard steel profiles, welded sections or lightweight trusses is an attractive solution to increase the stiffness of suspension systems
Summary
Suspension bridges are the most important and attractive structures possessing a number of technical, economical and aesthetic advantages. The stiffening girder in this bridge is practically absent and all loads are transferred to the main cable. Any of the well-known theories are complex and involves several procedures and approximations, a new concept of solving displacement equation in the analysis of suspension systems with stiffened cables is given by the authors in reference (Grigorjeva et al 2004). T. Grigorjeva et al Static analysis and simplified design of suspension bridges having various rigidity of cables method is to give a simplified and adaptable design pro- a) cedure to provide design aids for suspension system evaluation and practical recommendations. This paper presents the results of theoretical analysis and finite element modeling of the influence of the stiffness of the main cables on the static behaviour of suspension bridges as well as recommendations for designing such bridges
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
