000011642 001__ 11642
000011642 005__ 20141205155931.0
000011642 04107 $$aeng
000011642 046__ $$k2008-10-12
000011642 100__ $$aShimazaki, Kazushi
000011642 24500 $$aReinforced Concrete Shear Walls with De-Bonded Diagonal Reinforcements for the Damage-Less Reinforced Concrete Building

000011642 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011642 260__ $$b
000011642 506__ $$arestricted
000011642 520__ $$2eng$$aRecently, owners of buildings wish to continue using their buildings with low repair cost even after a severe earthquake. To achieve this, it is necessary to reduce the damage or to ensure good repairability of members. For a reinforced concrete building with a “shear core”, as the core resists most of the seismic force, large shear force and bending moment occurs. Repairability of the core wall is one of the most important factors in order to reuse the building. This paper examines the behavior of shear walls with de-bonded diagonal reinforcements to reduce the damage and so ensure good repairability. Test results showed that the number of cracks differed greatly even for the same load-carrying capacity; the total length of diagonal shear cracks was significantly less for walls with de-bonded diagonal reinforcements. Repair work was easier than with the common parallel reinforced wall. For precast walls, horizontal cracks appeared only at the bottom end of the wall; no diagonal cracks were observed, and these walls were easy to repair. For all specimens except the walls having an orthogonal wall, the maximum load was kept until R = 1/67. For the walls having an orthogonal wall, the load degraded during cyclic loading at R = 1/100 caused by compressive failure of concrete to resist the large amount of tension reinforcements in the orthogonal wall. It is difficult to reuse these walls after large deformation. The load-deflection relationship for all the specimens with diagonal reinforcements showed the slip property after R = 1/100. The equivalent viscous damping factor was smaller than the value of the wall with parallel bars. In conclusion, the newly developed earthquake resisting wall reduces damage, shows good performance, and can be reused even after a severe earthquake.

000011642 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011642 653__ $$areinforced concrete structure, damage control, shear wall, earthquake resistant design diagonal reinforcement, bond

000011642 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011642 720__ $$aShimazaki, Kazushi
000011642 8560_ $$ffischerc@itam.cas.cz
000011642 8564_ $$s1268896$$uhttps://invenio.itam.cas.cz/record/11642/files/05-03-0017.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-03-0017.
000011642 962__ $$r9324
000011642 980__ $$aPAPER