本文關(guān)鍵詞：外包鋼板-混凝土組合連梁非線性有限元分析:傳力與變形機理研究　出處：《建筑結(jié)構(gòu)學(xué)報》2014年08期 　論文類型：期刊論文

  更多相關(guān)文章： 外包鋼板-混凝土組合連梁 鋼管混凝土 有限元分析 斜壓桿 彎曲變形 剪切變形

【摘要】：在外包鋼板-混凝土組合連梁試驗研究的基礎(chǔ)上,對組合連梁試件和不同參數(shù)取值的補充模型進(jìn)行了非線性有限元分析。有限元分析得到的滯回曲線與試驗曲線吻合良好,能較好地模擬組合連梁的受力行為。通過應(yīng)力分析,發(fā)現(xiàn)內(nèi)填混凝土的工作機制類似于斜壓桿,其壓力沿著連梁對角線方向從一端的受壓側(cè)傳遞到另一端的受壓側(cè)。外包鋼板承擔(dān)的剪力比例和彎矩比例的范圍分別為0.36~0.76和0.57~0.82;混凝土的剪力與軸壓力之比和連梁的高跨比近似相等。連梁的側(cè)向位移由節(jié)點區(qū)變形引起的梁端轉(zhuǎn)角、連梁的彎曲變形與剪切變形產(chǎn)生;在常用的跨高比范圍內(nèi),剪切變形產(chǎn)生的側(cè)向位移在總位移中占有較大比例,且受跨高比的影響很大。
[Abstract]:On the basis of experimental study of steel plate and concrete composite connecting beam. The nonlinear finite element analysis is carried out on the combined beam specimen and the supplementary model with different parameters. The hysteretic curve obtained by the finite element analysis is in good agreement with the experimental curve. Through the stress analysis, it is found that the working mechanism of the inner filled concrete is similar to that of the oblique compression bar. The pressure is transmitted from the compression side at one end to the compression side at the other end along the diagonal direction of the connecting beam. The shear ratio and the bending moment ratio of the outer steel plate are 0.36 / 0.76 and 0.57 / 0.8, respectively. 2; The ratio of shear force to axial pressure of concrete is approximately equal to the ratio of height to span of the connecting beam. The lateral displacement of the connecting beam is caused by the corner angle of the beam caused by the deformation of the joint zone and the bending and shearing deformation of the connecting beam. In the common span height ratio range, the lateral displacement caused by shear deformation occupies a large proportion of the total displacement, and is greatly affected by the span height ratio.
【作者單位】： 清華大學(xué)土木工程系;清華大學(xué)土木工程安全與耐久教育部重點實驗室;
【基金】：國家科技支撐計劃項目(2011BAJ09B01) 國家自然科學(xué)基金項目(51178246) 清華大學(xué)自主科研計劃項目(2012Z06117)
【分類號】：TU398.2
【正文快照】： 0引言外包鋼板-混凝土組合剪力墻[1](亦稱作“雙鋼板-混凝土組合剪力墻”)由于在高軸壓比下仍具有較好的變形和耗能能力,因此適合在超高層建筑的核心筒中使用。外包鋼板還可作為混凝土澆筑的模板,并且在使用階段可防止混凝土裂縫外露。文獻(xiàn)[2-5]對外包鋼板-混凝土組合剪力墻進(jìn)，

本文編號：1430496