Analytical Approach to Predict Pre–Camber Deflection of the Pre-stressed Glulam Beams
A new approach to reinforce glulam timber beams using compressed wood (CW) has been developed by the Author. The compressed wood blocks are inserted into pre-cut holes on the top of glulam beams to produce pre-camber and to generate initial tensile and compressive stresses on the top and on the bott...
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| Format: | Article |
| Language: | English |
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Petra Christian University
2015-01-01
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| Series: | Civil Engineering Dimension |
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| Online Access: | http://puslit2.petra.ac.id/ejournal/index.php/civ/article/view/19207 |
| _version_ | 1818192102858686464 |
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| author | Anshari B. |
| author_facet | Anshari B. |
| author_sort | Anshari B. |
| collection | DOAJ |
| description | A new approach to reinforce glulam timber beams using compressed wood (CW) has been developed by the Author. The compressed wood blocks are inserted into pre-cut holes on the top of glulam beams to produce pre-camber and to generate initial tensile and compressive stresses on the top and on the bottom extreme fiber of the glulam beam, respectively. A simple analytical approach has been developed to predict pre-camber deflections of the beams reinforced with three CW blocks. Assuming that moisture-dependent expansion of the CW block creates an interactive linear pressure between the glulam beam and the CW block, this would generate a pair of eccentric force away from the neutral axis of the beam. It is shown that the pre-camber deflection predicted at midspan of the short beams with various reinforcing arrangements give good agreement with the measured pre-camber from previous experimental results. |
| first_indexed | 2024-12-12T00:25:10Z |
| format | Article |
| id | doaj.art-4fa1244a384c4f548467a261cb89ef02 |
| institution | Directory Open Access Journal |
| issn | 1410-9530 1979-570X |
| language | English |
| last_indexed | 2024-12-12T00:25:10Z |
| publishDate | 2015-01-01 |
| publisher | Petra Christian University |
| record_format | Article |
| series | Civil Engineering Dimension |
| spelling | doaj.art-4fa1244a384c4f548467a261cb89ef022022-12-22T00:44:39ZengPetra Christian UniversityCivil Engineering Dimension1410-95301979-570X2015-01-011714449Analytical Approach to Predict Pre–Camber Deflection of the Pre-stressed Glulam BeamsAnshari B.0 Department of Civil Engineering, Faculty of Engineering, Mataram University, Jl. Majapahit No. 62, Mataram 83125 A new approach to reinforce glulam timber beams using compressed wood (CW) has been developed by the Author. The compressed wood blocks are inserted into pre-cut holes on the top of glulam beams to produce pre-camber and to generate initial tensile and compressive stresses on the top and on the bottom extreme fiber of the glulam beam, respectively. A simple analytical approach has been developed to predict pre-camber deflections of the beams reinforced with three CW blocks. Assuming that moisture-dependent expansion of the CW block creates an interactive linear pressure between the glulam beam and the CW block, this would generate a pair of eccentric force away from the neutral axis of the beam. It is shown that the pre-camber deflection predicted at midspan of the short beams with various reinforcing arrangements give good agreement with the measured pre-camber from previous experimental results.http://puslit2.petra.ac.id/ejournal/index.php/civ/article/view/19207Compressed wood (CW); CW reinforced glulam beam; pre-stressed; pre-camber. |
| spellingShingle | Anshari B. Analytical Approach to Predict Pre–Camber Deflection of the Pre-stressed Glulam Beams Civil Engineering Dimension Compressed wood (CW); CW reinforced glulam beam; pre-stressed; pre-camber. |
| title | Analytical Approach to Predict Pre–Camber Deflection of the Pre-stressed Glulam Beams |
| title_full | Analytical Approach to Predict Pre–Camber Deflection of the Pre-stressed Glulam Beams |
| title_fullStr | Analytical Approach to Predict Pre–Camber Deflection of the Pre-stressed Glulam Beams |
| title_full_unstemmed | Analytical Approach to Predict Pre–Camber Deflection of the Pre-stressed Glulam Beams |
| title_short | Analytical Approach to Predict Pre–Camber Deflection of the Pre-stressed Glulam Beams |
| title_sort | analytical approach to predict pre camber deflection of the pre stressed glulam beams |
| topic | Compressed wood (CW); CW reinforced glulam beam; pre-stressed; pre-camber. |
| url | http://puslit2.petra.ac.id/ejournal/index.php/civ/article/view/19207 |
| work_keys_str_mv | AT ansharib analyticalapproachtopredictprecamberdeflectionoftheprestressedglulambeams |