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郭秉山，王海飛，閆月梅，張成林
(西安科技大學建筑與土木工程學院，西安710054)[摘要] 運用ANSYS軟件對小跨高比連梁受力性能進行了非線性有限元模擬，分析了連梁在循環(huán)荷載作用下的滯回性能、裂縫開展情況、鋼筋及混凝的應力及應變分布規(guī)律。研究結果表明：在循環(huán)荷載下，普通配筋連梁形成剪切破壞，但配菱形交叉鋼筋的連梁形成彎曲剪切破壞；配有菱形交叉鋼筋的連梁與普通配筋同跨高比連梁對比，延性約增大28%，承載力提高約44%;配有菱形交叉鋼筋連梁的鋼筋受力更合理，有效地改善了連梁的受力性能。
[關鍵詞] 剪力墻；連梁；循環(huán)荷載；受力性能Behaviors of coupling beam of shear walls under circle load
Guo Bingshan, Wang Haifei, Yan Yuemei, Zhang Chenglin
( School of Architecture and Civil Engineering, Xi'an University of Science and Technology, Xi'an 710054, China)Abstract: ANSYS was used to investigate mechanical behavior of coupling beams with small depth-to span ratio by nonlinear finite element simulation, and the hysteretic behavior and cracking development of coupling beams were analyzed under cyclic loading, as well as the distribution regularity of stress and strain of steel and concrete. The result indicates that under cyclic loading, routine coupling beams form shear destruction; but the newly designed coupling beams with diagonal and diamond- patterned reinforcing bars form flexural shear destruction. Compared with the routine coupling beams with the same depth-to-span ratio, the ductility of the newly designed coupling beams with diagonal and diamond- patterned reinforcing bars increases approximately 28% and load capacity increases about 44%. The coupling beams with diagonal and diamond-patterned reinforcing bars have more reasonable load bearing behaviors, and it can effectively improve the mechanical behavior of coupling beams.
Keywords: shear walls; coupling beams; circle loads; behaviors under load
