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Article: Experimental Study of Shear-Critical Reinforced-Concrete Shear Walls under Tension-Bending Shear-Combined Cyclic Load

TitleExperimental Study of Shear-Critical Reinforced-Concrete Shear Walls under Tension-Bending Shear-Combined Cyclic Load
Authors
KeywordsAxial tension ratio
Force transfer mechanism
Reinforced concrete
Shear compression
Shear strength
Shear wall
Tension-bending-shear
Issue Date2020
Citation
Journal of Structural Engineering (United States), 2020, v. 146, n. 5, article no. 04020047 How to Cite?
AbstractFour shear-critical RC shear walls were tested under a tension-bending-shear load to replicate seismic behavior of the bottom shear wall in high-rise buildings. The axial tension ratio ranged from 0 to 0.5 and the aspect ratio was 1.06. The shear compression failure mode was observed for each specimen, characterized by the formation of an inclined crack at 45° and direct strut action. The shear displacement was a dominant deformation component throughout the loading history. When the axial tension force increased from 0 to 1,293 kN, the ultimate drift ratio increased from 0.90% to 2.38%, while shear capacity linearly decreased from 1,507 to 895 kN. The load-displacement curve showed a significant pinching effect and strength degradation effect. In addition, this paper reports an innovative experimental method to obtain shear resistance of transverse reinforcement (Vs) based on the plasticity theory and strain measuring result. Test results using this method show that not all horizontal distributed rebar yield simultaneously at the ultimate capacity. The US code-specified shear strength contribution of horizontal distributed rebar was found to be unsafe for each test specimen. Finally, a database of RC shear walls subject to combined tension-bending-shear load was established to evaluate shear strength formulas in design codes. The comparison showed the Chinese code predicted spuriously higher tension-shear capacity, while the US code predicted conservative capacity. Based on the developed database, a simplified design formula is proposed with adequate safety concerns and accuracy.
Persistent Identifierhttp://hdl.handle.net/10722/326213
ISSN
2023 Impact Factor: 3.7
2023 SCImago Journal Rankings: 1.360
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorNie, Xin-
dc.contributor.authorWang, Jia Ji-
dc.contributor.authorTao, Mu Xuan-
dc.contributor.authorFan, Jian Sheng-
dc.contributor.authorMo, Y. L.-
dc.contributor.authorZhang, Zi Yu-
dc.date.accessioned2023-03-09T09:58:56Z-
dc.date.available2023-03-09T09:58:56Z-
dc.date.issued2020-
dc.identifier.citationJournal of Structural Engineering (United States), 2020, v. 146, n. 5, article no. 04020047-
dc.identifier.issn0733-9445-
dc.identifier.urihttp://hdl.handle.net/10722/326213-
dc.description.abstractFour shear-critical RC shear walls were tested under a tension-bending-shear load to replicate seismic behavior of the bottom shear wall in high-rise buildings. The axial tension ratio ranged from 0 to 0.5 and the aspect ratio was 1.06. The shear compression failure mode was observed for each specimen, characterized by the formation of an inclined crack at 45° and direct strut action. The shear displacement was a dominant deformation component throughout the loading history. When the axial tension force increased from 0 to 1,293 kN, the ultimate drift ratio increased from 0.90% to 2.38%, while shear capacity linearly decreased from 1,507 to 895 kN. The load-displacement curve showed a significant pinching effect and strength degradation effect. In addition, this paper reports an innovative experimental method to obtain shear resistance of transverse reinforcement (Vs) based on the plasticity theory and strain measuring result. Test results using this method show that not all horizontal distributed rebar yield simultaneously at the ultimate capacity. The US code-specified shear strength contribution of horizontal distributed rebar was found to be unsafe for each test specimen. Finally, a database of RC shear walls subject to combined tension-bending-shear load was established to evaluate shear strength formulas in design codes. The comparison showed the Chinese code predicted spuriously higher tension-shear capacity, while the US code predicted conservative capacity. Based on the developed database, a simplified design formula is proposed with adequate safety concerns and accuracy.-
dc.languageeng-
dc.relation.ispartofJournal of Structural Engineering (United States)-
dc.subjectAxial tension ratio-
dc.subjectForce transfer mechanism-
dc.subjectReinforced concrete-
dc.subjectShear compression-
dc.subjectShear strength-
dc.subjectShear wall-
dc.subjectTension-bending-shear-
dc.titleExperimental Study of Shear-Critical Reinforced-Concrete Shear Walls under Tension-Bending Shear-Combined Cyclic Load-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1061/(ASCE)ST.1943-541X.0002596-
dc.identifier.scopuseid_2-s2.0-85081101213-
dc.identifier.volume146-
dc.identifier.issue5-
dc.identifier.spagearticle no. 04020047-
dc.identifier.epagearticle no. 04020047-
dc.identifier.isiWOS:000538168800020-

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