نوع مقاله : علمی - پژوهشی
نویسندگان
1 گروه عمران ، دانشکده فنی ، دانشگاه ارومیه ، ارومیه ، ایران
2 استاد، دانشکده فنی و مهندسی، دانشگاه ارومیه، ارومیه، ایران
3 عضو هیات علمی تمام وقت دانشگاه ارومیه
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Due to adverse effect of lap splice on the ductility of shear walls, ACI 318-19 does not allows use of lap splice in stories with probable nonlinear excursions. However, due to lack of capacity design in ACI design approach for shear walls, in fact there are high probability of nonlinear deformation in all stories. This means possible nonlinear ABSTRACT
Due to adverse effect of lap splice on the ductility of shear walls, ACI 318-19 does not allows use of lap splice in stories with probable nonlinear excursions. However, due to lack of capacity design in ACI design approach for shear walls, in fact there are high probability of nonlinear deformation in all stories. This means possible nonlinear demand in stories with lap spliced bars. This paper investigates performance of lap spliced boundary elements of lightly reinforced shear walls, where boundary elements subjected to mainly tensile loadings. Two specimens with continuous rebars and three specimens with lap splice of different lengths are included in the experimental program. The specimens are subjected to asymmetric cyclic axial loading. Test results reveals that lap splice increases deformation demand on the portions of the specimen out side of lap splice length, leading to rebar fracture at lateral drifts much smaller than that excepted for specimens with continuous rebars. Presence of lap splice could substantially decrease lateral drift capacity from 0.04 to about 0.013. Also out of plane buckling for specimens with lap splice occurs at smaller tensile strains.
کلیدواژهها [English]