Elliptical underground concrete block bridge with minimal weight
An algorithm for determining the optimal parameters of an elliptical road bridge made of concrete blocks is proposed. The arch section heights are determined from the condition that the height of the concrete compressed zone should not be less than half the section height at any position of the auto...
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| Format: | Article |
| Language: | English |
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Peter the Great St. Petersburg Polytechnic University
2023-02-01
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| Series: | Magazine of Civil Engineering |
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| Online Access: | http://engstroy.spbstu.ru/article/2023.117.13/ |
| _version_ | 1797894116875436032 |
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| author | Tyukalov Yury |
| author_facet | Tyukalov Yury |
| author_sort | Tyukalov Yury |
| collection | DOAJ |
| description | An algorithm for determining the optimal parameters of an elliptical road bridge made of concrete blocks is proposed. The arch section heights are determined from the condition that the height of the concrete compressed zone should not be less than half the section height at any position of the automobile load. To solve the problem by the finite element method in physically nonlinear formulation, the principle of possible stress states is used. The nodes equilibrium equations of the arch are compiled using the possible displacements principle. The arch internal forces by a finite element length are approximated with linear functions, the concrete deformation diagram is represented in a piecewise-broken curve. Also, to determine the bearing capacity reserve of the optimal arch, the arch calculations were performed with a gradual increase in the automobile load up to destruction. Three options for the vehicle load location were considered. The optimal parameters of an arched road bridge with a span of 12 meters and its bearing capacity have been determined. It is shown that the arch destruction occurs with an increase in the load from the car by about 1.6 times. |
| first_indexed | 2024-04-10T07:03:44Z |
| format | Article |
| id | doaj.art-42de3dc655524dd3837bab3d4fc60019 |
| institution | Directory Open Access Journal |
| issn | 2712-8172 |
| language | English |
| last_indexed | 2024-04-10T07:03:44Z |
| publishDate | 2023-02-01 |
| publisher | Peter the Great St. Petersburg Polytechnic University |
| record_format | Article |
| series | Magazine of Civil Engineering |
| spelling | doaj.art-42de3dc655524dd3837bab3d4fc600192023-02-27T10:34:08ZengPeter the Great St. Petersburg Polytechnic UniversityMagazine of Civil Engineering2712-81722023-02-011170110.34910/MCE.117.1320714726Elliptical underground concrete block bridge with minimal weightTyukalov Yury0https://orcid.org/0000-0001-6184-2365Vyatka State UniversityAn algorithm for determining the optimal parameters of an elliptical road bridge made of concrete blocks is proposed. The arch section heights are determined from the condition that the height of the concrete compressed zone should not be less than half the section height at any position of the automobile load. To solve the problem by the finite element method in physically nonlinear formulation, the principle of possible stress states is used. The nodes equilibrium equations of the arch are compiled using the possible displacements principle. The arch internal forces by a finite element length are approximated with linear functions, the concrete deformation diagram is represented in a piecewise-broken curve. Also, to determine the bearing capacity reserve of the optimal arch, the arch calculations were performed with a gradual increase in the automobile load up to destruction. Three options for the vehicle load location were considered. The optimal parameters of an arched road bridge with a span of 12 meters and its bearing capacity have been determined. It is shown that the arch destruction occurs with an increase in the load from the car by about 1.6 times.http://engstroy.spbstu.ru/article/2023.117.13/arch bridgefinite element methodconcrete blocksoptimal parameterspossible displacements principle |
| spellingShingle | Tyukalov Yury Elliptical underground concrete block bridge with minimal weight Magazine of Civil Engineering arch bridge finite element method concrete blocks optimal parameters possible displacements principle |
| title | Elliptical underground concrete block bridge with minimal weight |
| title_full | Elliptical underground concrete block bridge with minimal weight |
| title_fullStr | Elliptical underground concrete block bridge with minimal weight |
| title_full_unstemmed | Elliptical underground concrete block bridge with minimal weight |
| title_short | Elliptical underground concrete block bridge with minimal weight |
| title_sort | elliptical underground concrete block bridge with minimal weight |
| topic | arch bridge finite element method concrete blocks optimal parameters possible displacements principle |
| url | http://engstroy.spbstu.ru/article/2023.117.13/ |
| work_keys_str_mv | AT tyukalovyury ellipticalundergroundconcreteblockbridgewithminimalweight |