Structural Performance of a Hybrid FRP-Aluminum Modular Triangular Truss System Subjected to Various Loading Conditions
A novel hybrid FRP-aluminum truss system has been employed in a two-rut modular bridge superstructure composed of twin inverted triangular trusses. The actual flexural behavior of a one-rut truss has been previously investigated under the on-axis loading test; however, the structural performance of...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2014/615927 |
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| author | Dongdong Zhang Yaxin Huang Qilin Zhao Fei Li Feng Li Yifeng Gao |
| author_facet | Dongdong Zhang Yaxin Huang Qilin Zhao Fei Li Feng Li Yifeng Gao |
| author_sort | Dongdong Zhang |
| collection | DOAJ |
| description | A novel hybrid FRP-aluminum truss system has been employed in a two-rut modular bridge superstructure composed of twin inverted triangular trusses. The actual flexural behavior of a one-rut truss has been previously investigated under the on-axis loading test; however, the structural performance of the one-rut truss subjected to an off-axis load is still not fully understood. In this paper, a geometrical linear finite element model is introduced and validated by the on-axis loading test; the structural performance of the one-rut truss subjected to off-axis load was numerically obtained; the dissimilarities of the structural performance between the two different loading cases are investigated in detail. The results indicated that (1) the structural behavior of the off-axis load differs from that of the on-axis load, and the off-axis load is the critical loading condition controlling the structural performance of the triangular truss; (2) under the off-axis load, the FRP trussed members and connectors bear certain out-of-plane bending moments and are subjected to a complicated stress state; and (3) the stress state of these members does not match that of the initial design, and optimization for the redesign of these members is needed, especially for the pretightened teeth connectors. |
| format | Article |
| id | doaj-art-6b16502298a74bda8f56563a6df5f560 |
| institution | Kabale University |
| issn | 2356-6140 1537-744X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-6b16502298a74bda8f56563a6df5f5602025-02-03T07:25:36ZengWileyThe Scientific World Journal2356-61401537-744X2014-01-01201410.1155/2014/615927615927Structural Performance of a Hybrid FRP-Aluminum Modular Triangular Truss System Subjected to Various Loading ConditionsDongdong Zhang0Yaxin Huang1Qilin Zhao2Fei Li3Feng Li4Yifeng Gao5College of Field Engineering, PLA University of Science and Technology, Nanjing 210007, ChinaCollege of Field Engineering, PLA University of Science and Technology, Nanjing 210007, ChinaCollege of Field Engineering, PLA University of Science and Technology, Nanjing 210007, ChinaInstitute of Logistics Engineering of PLA, Chongqing 400000, ChinaCollege of Field Engineering, PLA University of Science and Technology, Nanjing 210007, ChinaCollege of Field Engineering, PLA University of Science and Technology, Nanjing 210007, ChinaA novel hybrid FRP-aluminum truss system has been employed in a two-rut modular bridge superstructure composed of twin inverted triangular trusses. The actual flexural behavior of a one-rut truss has been previously investigated under the on-axis loading test; however, the structural performance of the one-rut truss subjected to an off-axis load is still not fully understood. In this paper, a geometrical linear finite element model is introduced and validated by the on-axis loading test; the structural performance of the one-rut truss subjected to off-axis load was numerically obtained; the dissimilarities of the structural performance between the two different loading cases are investigated in detail. The results indicated that (1) the structural behavior of the off-axis load differs from that of the on-axis load, and the off-axis load is the critical loading condition controlling the structural performance of the triangular truss; (2) under the off-axis load, the FRP trussed members and connectors bear certain out-of-plane bending moments and are subjected to a complicated stress state; and (3) the stress state of these members does not match that of the initial design, and optimization for the redesign of these members is needed, especially for the pretightened teeth connectors.http://dx.doi.org/10.1155/2014/615927 |
| spellingShingle | Dongdong Zhang Yaxin Huang Qilin Zhao Fei Li Feng Li Yifeng Gao Structural Performance of a Hybrid FRP-Aluminum Modular Triangular Truss System Subjected to Various Loading Conditions The Scientific World Journal |
| title | Structural Performance of a Hybrid FRP-Aluminum Modular Triangular Truss System Subjected to Various Loading Conditions |
| title_full | Structural Performance of a Hybrid FRP-Aluminum Modular Triangular Truss System Subjected to Various Loading Conditions |
| title_fullStr | Structural Performance of a Hybrid FRP-Aluminum Modular Triangular Truss System Subjected to Various Loading Conditions |
| title_full_unstemmed | Structural Performance of a Hybrid FRP-Aluminum Modular Triangular Truss System Subjected to Various Loading Conditions |
| title_short | Structural Performance of a Hybrid FRP-Aluminum Modular Triangular Truss System Subjected to Various Loading Conditions |
| title_sort | structural performance of a hybrid frp aluminum modular triangular truss system subjected to various loading conditions |
| url | http://dx.doi.org/10.1155/2014/615927 |
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