标题: | 非对称断面钢骨钢筋混凝土(SRC)梁柱构材极限强度之研究 A Study on Ultimate Strength of Unsymmetric Steel Reinforced Concrete Beam-Columns |
作者: | 林义闵 I-Ming Lin 陈诚直 Cheng-Chih Chen 土木工程学系 |
关键字: | 钢骨钢筋混凝土;轴力-弯矩强度;梁柱构材;Steel reinforced concrete(SRC);Axial load-Moment Strength;Beam-Columns |
公开日期: | 1998 |
摘要: | 过去国内外对钢骨钢筋混凝土(Steel Reinforced Concrete,简称SRC)柱及梁柱构材的研究较着重于探讨双对称断面构材的轴向载重、偏心载重、轴力-弯矩等之行为,极少探讨非对称断面之SRC构材之行为,唯为于工程实务上有较广之应用,非对称的T字型钢骨断面或钢骨偏心断面之SRC构材实有深入研究之必要性。 本研究系以实验的方式,探讨含T字型钢骨断面非对称包覆型SRC短柱的单向载重及SRC梁柱轴力-弯矩载重之行为。试验规划以钢骨型式、钢骨含量、轴力比及偏心距为试体参数。在SRC短柱的轴压强度上,试验结果显示在相同的箍筋间距、钢骨含量与钢筋比下,偏心量与钢骨型式于轴向极限强度之影响甚小。在非对称断面SRC梁柱构材方面,试验参数对其极限弯矩强度及剩余强度的表现有显着的影响,且正、负向之极限弯矩强度差异甚大。试验结果与各规范之预测值比较,显示ACI规范与AIJ规范皆能准确的预测此种非对称断面SRC梁柱之轴力与弯矩强度关系。 Researches on steel reinforced concrete (SRC) columns during the past few decades were focused on the symmetrical structural steel shape. This research conducted experimental studies to investigate the behavior and ultimate strength of concrete-encased steel columns having unsymmetrical T-shape structural steel section. Twenty specimens including six short SRC columns and fourteen SRC beam-columns were designed and constructed. The short columns were loaded monotonically to failure while the beam-columns were subjected to axial load as well as flexural bending simultaneously. Variables to be studied included the shape of structural steel, the ratio of the area of structural steel shape to concrete section, the effect of axial load and the eccentricity of structural steel shape. Effects of various experimental parameters on the behavior were discussed. The experimental results were summarized and presented. The results indicate that ACI Building Code and AIJ SRC Standards can predict well the load carrying capacities of the SRC columns having unsymmetrical structural steel shape. |
URI: | http://140.113.39.130/cdrfb3/record/nctu/#NT870015060 http://hdl.handle.net/11536/63764 |
显示于类别: | Thesis |