000019799 001__ 19799
000019799 005__ 20170118182337.0
000019799 04107 $$aeng
000019799 046__ $$k2017-01-09
000019799 100__ $$aMori, Kenjiro
000019799 24500 $$aUltimate Seismic Limit State and Repairability of Multi-Story Steel Frames Subjected To Severe Earthquake Loads

000019799 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019799 260__ $$b
000019799 506__ $$arestricted
000019799 520__ $$2eng$$aIn the general seismic design, the building structures are required to have adequate strength to resist the applied loads. However, it has been reported that severe disasters, such as great earthquake, cause serious damage to a lot of building structures around the world. Based on these experiences, there are many discussions about resilience, repairability or recovery for damaged building structures. It can be said that the criteria of the repairability for damaged building structures are estimated by the residual seismic resistant performance against an aftershock or future earthquake, the existence of reconstruction technique and its possibility under the damaged structures, economic loss or reasonable construction cost, and necessity and urgency of repair. Furthermore, in order to evaluate the structural performance on repaired building structures, the recovery on repaired members becomes essential index, while it is also important consideration that repairing damaged members may influence the performance of the whole of the building structure after repair. In the case of steel structures, several studies have proposed repair methods for damaged steel members, and these studies have investigated the recovery of the structural performance on the repaired members. Based on these studies, a technical guideline and design procedure for repairing damaged building structures has been published in Japan. However, little study has been reported on investigating accurately the relationship between repair methods and the recovery of the structural performance on the repaired structures. This study aims to clarify the repairability and recovery on steel framed structure. Therefore, the relationship between repair method and the seismic resistant performance on repaired steel framed structure is studied analytically, and it is try to evaluate the repairability and the recovery on steel framed structures. In this paper, analytical study is conducted to investigate the repairability of multi-story steel frames by limit analysis and seismic response analysis, and the optimum repair strategy against future earthquakes is discussed. First, the multi-story steel frame is designed according to Japanese Seismic Design Standard as analytical model. Second, the ultimate seismic limit state and structural damage which may occur under great earthquakes are calculated. Third, based on past research of repair methods, several repairing strategy are planned and the recovery of the structural performance of each strategy are calculated. Finally, the optimum repairing strategy is explored by comparing each strategy. From the analytical results, it is observed that the structural performance of repaired steel framed model are enhanced if the adequate repairing strategy is adopted.

000019799 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019799 653__ $$aSteel Frame, Repairability, Ultimate limit State

000019799 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019799 720__ $$aMori, Kenjiro$$iIto, Takumi
000019799 8560_ $$ffischerc@itam.cas.cz
000019799 8564_ $$s881366$$uhttps://invenio.itam.cas.cz/record/19799/files/4436.pdf$$yOriginal version of the author's contribution as presented on USB, paper 4436.
000019799 962__ $$r16048
000019799 980__ $$aPAPER