T形鋼管混凝土組合柱-鋼筋混凝土梁外伸端板連接節(jié)點(diǎn)力學(xué)性能研究*
黃俊1,2，劉記雄1,2，蔡越1，謝建業(yè)1，戴紹斌1,2
- 摘 要
-
（1 武漢理工大學(xué)土木工程與建筑學(xué)院， 武漢 430070； 2 武漢理工大設(shè)計(jì)研究院， 武漢 430070）
［摘要］通過靜力加載試驗(yàn)及ABAQUS非線性有限元分析來研究T形鋼管混凝土組合柱-鋼筋混凝土梁外伸端板連接節(jié)點(diǎn)力學(xué)性能。結(jié)果表明：節(jié)點(diǎn)剪力主要由核心區(qū)形成的斜壓桿來承擔(dān)，而牛腿腹板承擔(dān)的比例較??；設(shè)置加勁肋可有效抑制端板翹曲變形，緩解節(jié)點(diǎn)區(qū)應(yīng)力集中，比增加端板厚度更能有效提高節(jié)點(diǎn)抗彎承載力；軸壓比小于0.4時(shí)，增大軸壓比節(jié)點(diǎn)抗彎承載力略有提高，軸壓比大于0.4時(shí)，增大軸壓比節(jié)點(diǎn)抗彎承載力稍有降低，但提高、降低的幅值均很小；梁柱線剛度比對(duì)節(jié)點(diǎn)抗彎承載力影響較?。惶岣呖蚣芰夯炷翉?qiáng)度等級(jí)，節(jié)點(diǎn)抗彎承載力相應(yīng)有所提高；提高框架梁配筋率，節(jié)點(diǎn)抗彎承載力明顯增大，但當(dāng)配筋率超過1.8%后繼續(xù)提高時(shí)，節(jié)點(diǎn)抗彎承載力提高的幅值較小；有限元計(jì)算骨架曲線與試驗(yàn)結(jié)果能較好吻合，驗(yàn)證了有限元模型的合理性。［關(guān)鍵詞］T形鋼管混凝土組合柱; 外伸端板連接節(jié)點(diǎn); 力學(xué)性能; 非線性有限元分析中圖分類號(hào)：TU398 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1002-848X(2016)12-0080-08
Study on mechanical property of extended-end-plate joint between reinforced concrete beam and T-shaped concrete-filled rectangular composite tubular columnHuang Jun1,2, Liu Jixiong1，2, Cai Yue1, Xie Jianye1, Dai Shaobin1,2(1 School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China; 2 Design & Research Institute, Wuhan University of Technology, Wuhan 430070, China)Abstract: The static loading experiment and ABAQUS nonlinear finite element analysis were conducted to study the mechanical property of extended-end-plate joint between reinforced concrete beam and T-shaped concrete-filled rectangular composite tubular column. The results indicate that the shear forces of joint is borne mainly by inclined compression strut formed in core region and a small proportion is shared by the corbel web. Configuring stiffeners can suppress the warping deformation caused by the bulging of extended-end-plate effectively and relieve the stress centralization, which is more effective to improve the bending bearing capacity of joint than increasing the thickness of end plate. When the axial compression ratio is less than 0.4, the bending bearing capacity of the joint increases slightly with the improvement of the axial compression ratio; when the ratio is more than 0.4, the bending bearing capacity decreases lightly, but both the increasing and decreasing amplitudes are negligible. The linear stiffness ratio of beam and column has a little influence on the bearing bending capacity of the joint. Increasing the concrete strength of frame beam improves the bending bearing capacity of the joint to some extent. With the improvement of reinforcement ratio of frame beam, the bending benring capacity of the joint increases significantly, but when the reinforcement ratio of the frame beam is more than 1.8%, the increasing amplitude of the bending bearing capacity of the joint is very small. The finite element calculation skeleton curve well agrees with the test results, which verifies the rationality of the finite element model.Keywords: T-shaped concrete-filled rectangular composite tubular column; extended-end-plate joint; mechanical property; nonlinear finite element analysis
*湖北省自然科學(xué)基金（2012FFB05112）,2015武漢市“黃鶴英才（城市建設(shè)）計(jì)劃”。通訊作者：劉記雄，博士，工程師，Email:ljxabccba@whut.edu.cn。
- 下載地址
-
你還沒注冊(cè)？或者沒有登錄？這篇論文要求至少是本站的注冊(cè)會(huì)員才能閱讀！
如果你還沒注冊(cè)，請(qǐng)趕緊點(diǎn)此注冊(cè)吧！
如果你已經(jīng)注冊(cè)但還沒登錄，請(qǐng)趕緊點(diǎn)此登錄吧！
