Optimization of prestressing operations in the design of cable-stayed bridges by applying the Direct Algorithm
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Bibliographic Details
| Author(s): |
Josep Farré Checa
(MOST Enginyers, Barcelona, Spain)
Haiying Ma (Tongji University, Shanghai, China) Jose Antonio Lozano Galant (Universidad de Castilla-La Mancha, Ciudad Real, Spain) José Turmo Coderque (Universitat Politècnica de Catalunya, Barcelona, Spain) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Congress: Beyond Structural Engineering in a Changing World, San José, Cost Rica, 25-27 Seotember 2024 | ||||
| Published in: | IABSE Congress San José 2024 | ||||
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| Page(s): | 921-928 | ||||
| Total no. of pages: | 8 | ||||
| DOI: | 10.2749/sanjose.2024.0921 | ||||
| Abstract: |
A new direct simulation of the cantilever erection method is presented in order to reduce the prestressing operations of stay cables. This new method introduces a direct approach for cable- stayed bridge construction using the cantilever erection method, employing independent finite element models. Prestressing forces are modeled as imposed strains based on the unstressed length concept to ensure the achievement of a specific target state post-construction (objective service stage, OSS). This facilitates faster simulation of the construction process, particularly for steel bridges and the predesign of concrete cable-stayed bridges, and enables direct simulation of construction stages and OSS achievement. The proposed method's efficacy is demonstrated through the analysis of a cable-stayed bridge. |
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| Keywords: |
cable-stayed bridges cantilever construction Tensioning Process objective service stage unstressed length concept direct approach
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