A Study on Evaluation of Seismic Performances of Retrofitting with Siding Board for Existing Timber Buildings

摘要

It aims to mention about the various examinations to use an exterior siding material as a retrofitting method of construction of the existent buildings. The retrofitting methods of construction of 2 case are proposed. In the Case 1 method, the siding is changed of the existent wall of the range (about 2.0m) that a part reaches ground floor. In this case, a foothold cost can be reduced. In the Case 2 method, a thickness siding (t= 24 mm) is raised even on the beam. In this case, it works for the improvement in the seismic performance and the fireproof performance. Because a proof stress element and finishing can be included, a restructuring cost can be reduced. And an amount of money assumption is made in the precision which it has in advance in the foundation of the reinforcement part as well because it can be confirmed. Finishing can plan the improvement which sometimes has more than one variation by adding a color pattern in result fine sight as well, too. It can think that execution becomes possible with being here confidently because it is the outside construction. The static loading test is enforced all 26 specimens. In the Case 1, NS001 (width 455 mm, t=18mm) has 2.4 of the wall magnification, NS003 (width 910 mm, 2 sheets-folds of t=12mm) has 3.6, the type (NS010, NS011 and NS013) which drip reinforcement have 3.4 4.5. In the Case 2, NS009 (width 910 mm, 2 sheets-folds of t= 12 mm) and NS026 (width 910 mm, t=16mm) have 12.0 of the wall magnification, NS008 (width 455 mm, t=18mm) and NS025 (width 455 mm, t=24mm) have about 4.8 5.5. And a narrow house is applied the Case 1 siding in the case study. The case study give to be able to retrofitting of narrow house by siding boards.