NONLINEAR PRESTRESS OF SPACE CABLE NET STRUCTURES
Cable-net structures are used for many structural purposes, such as stadiums, roofs, bridges…etc. They are lightweight structures that can be used in unique construction at an effective cost. Geometrical nonlinearity governs the performance of cable net systems. This particular system can equilibrat...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Tishk International University
2024-03-01
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| Series: | Eurasian Journal of Science and Engineering |
| Subjects: | |
| Online Access: | https://eajse.tiu.edu.iq/submit/article/nonlinear-prestress-of-space-cable-net-structures |
| _version_ | 1797199479564140544 |
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| author | Shna Jabar Abdulkarim Najmadeen Mohammed Saeed |
| author_facet | Shna Jabar Abdulkarim Najmadeen Mohammed Saeed |
| author_sort | Shna Jabar Abdulkarim |
| collection | DOAJ |
| description | Cable-net structures are used for many structural purposes, such as stadiums, roofs, bridges…etc. They are lightweight structures that can be used in unique construction at an effective cost. Geometrical nonlinearity governs the performance of cable net systems. This particular system can equilibrate applied loads by undergoing significant deformations with small strains. Therefore, the cable-net structures require to attain a suitable degree of prestressing to prevent cables from slacking and to obtain specific geometry and function. The effective numerical approach is applied for computing the desired level of prestress for a three-dimensional cable-net model and a conical cable-net model. The targeted prestress is achieved considering the nonlinear behavior of cables. The nonlinear member variation is introduced as a second-order function of displaced joints. Then used in determining the desired prestress. Two numerical examples are conducted using the present technique and the nonlinear analysis of SAP2000. Both of the analysis outcomes for the models showed a very well agreement with reaching the target. However, using the Euclidean norm index with a value of 0.0809 in the first example confirmed that the current technique is more approachable to the desired prestress. In addition, when the value of actuation is pre-determined and used in computing the degree of prestress, both the present approach and SAP2000 software work equivalently, as seemed in the second example, which showed 0.04% of the maximum difference in the prestress computation. |
| first_indexed | 2024-04-24T07:16:25Z |
| format | Article |
| id | doaj.art-84fd6eb5fa074e9fb191f58e4752b2fc |
| institution | Directory Open Access Journal |
| issn | 2414-5629 2414-5602 |
| language | English |
| last_indexed | 2024-04-24T07:16:25Z |
| publishDate | 2024-03-01 |
| publisher | Tishk International University |
| record_format | Article |
| series | Eurasian Journal of Science and Engineering |
| spelling | doaj.art-84fd6eb5fa074e9fb191f58e4752b2fc2024-04-21T11:15:30ZengTishk International UniversityEurasian Journal of Science and Engineering2414-56292414-56022024-03-011012334https://doi.org/10.23918/eajse.v10i1p3NONLINEAR PRESTRESS OF SPACE CABLE NET STRUCTURESShna Jabar Abdulkarim0Najmadeen Mohammed Saeed1¹ Civil Engineering Department, Erbil Technical Engineering College, Erbil Polytechnic University, Erbil, Iraq. & Civil Engineering Department, University of Raparin, Rania, Iraq.Civil Engineering Department, Faculty of Engineering, Tishk International University, Erbil, IraqCable-net structures are used for many structural purposes, such as stadiums, roofs, bridges…etc. They are lightweight structures that can be used in unique construction at an effective cost. Geometrical nonlinearity governs the performance of cable net systems. This particular system can equilibrate applied loads by undergoing significant deformations with small strains. Therefore, the cable-net structures require to attain a suitable degree of prestressing to prevent cables from slacking and to obtain specific geometry and function. The effective numerical approach is applied for computing the desired level of prestress for a three-dimensional cable-net model and a conical cable-net model. The targeted prestress is achieved considering the nonlinear behavior of cables. The nonlinear member variation is introduced as a second-order function of displaced joints. Then used in determining the desired prestress. Two numerical examples are conducted using the present technique and the nonlinear analysis of SAP2000. Both of the analysis outcomes for the models showed a very well agreement with reaching the target. However, using the Euclidean norm index with a value of 0.0809 in the first example confirmed that the current technique is more approachable to the desired prestress. In addition, when the value of actuation is pre-determined and used in computing the degree of prestress, both the present approach and SAP2000 software work equivalently, as seemed in the second example, which showed 0.04% of the maximum difference in the prestress computation.https://eajse.tiu.edu.iq/submit/article/nonlinear-prestress-of-space-cable-net-structurescable-net; prestress; geometric nonlinearity; self-equilibrate; force method |
| spellingShingle | Shna Jabar Abdulkarim Najmadeen Mohammed Saeed NONLINEAR PRESTRESS OF SPACE CABLE NET STRUCTURES Eurasian Journal of Science and Engineering cable-net; prestress; geometric nonlinearity; self-equilibrate; force method |
| title | NONLINEAR PRESTRESS OF SPACE CABLE NET STRUCTURES |
| title_full | NONLINEAR PRESTRESS OF SPACE CABLE NET STRUCTURES |
| title_fullStr | NONLINEAR PRESTRESS OF SPACE CABLE NET STRUCTURES |
| title_full_unstemmed | NONLINEAR PRESTRESS OF SPACE CABLE NET STRUCTURES |
| title_short | NONLINEAR PRESTRESS OF SPACE CABLE NET STRUCTURES |
| title_sort | nonlinear prestress of space cable net structures |
| topic | cable-net; prestress; geometric nonlinearity; self-equilibrate; force method |
| url | https://eajse.tiu.edu.iq/submit/article/nonlinear-prestress-of-space-cable-net-structures |
| work_keys_str_mv | AT shnajabarabdulkarim nonlinearprestressofspacecablenetstructures AT najmadeenmohammedsaeed nonlinearprestressofspacecablenetstructures |