- 摘 要
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聞 洋1,2，羅國榮3，馬軍力4
（1北京科技大學土木與環(huán)境工程學院，北京 100083; 2內(nèi)蒙古科技大學建筑與土木工程學院，包頭014010; 3中國京冶工程技術(shù)有限公司，北京100088; 4包鋼（集團）公司，包頭014010）[摘要] 采用纖維模型法，用FORTRAN語言編制非線性數(shù)值計算程序，計算出矩形鋼管膨脹混凝土梁在單向受彎作用下的荷載-變形全過程關(guān)系曲線。通過對8根矩形鋼管膨脹混凝土梁的試驗研究，考察了矩形鋼管膨脹混凝土的純彎力學性能。同時，將試驗結(jié)果和理論分析計算的結(jié)果進行了對比，發(fā)現(xiàn)吻合較好。根據(jù)試驗結(jié)果，確定了矩形鋼管膨脹混凝土梁的極限承載力計算公式。最后，與其他形式的梁做了對比分析發(fā)現(xiàn)，矩形鋼管混凝土梁的承載力、變形及材料利用率有明顯的優(yōu)勢。
[關(guān)鍵詞] 矩形鋼管混凝土；梁；純彎；抗彎承載力Research on the Mechanics Behavior of Concrete-filled Rectangular Steel Tubes Beam
Wen Yang1,2, Luo Guorong3, Ma Junli4
(1University of Science and Technology Beijing, Civil & Environment Engineering School, Beijing 10083, China; 2 Inner Mongolia University of Science and Technology, Baotou 014010, China; 3 China Jingye Engineering Corporation Limited, Beijing 100088, China; 4 Bao Tou Iron & Steel(Group) Co. ,Ltd., Baotou 014010, China)Abstract: Numerical analysis program was developed, which was applied for the analysis of flexural behavior of expansive concrete-filled rectangular steel tube beam subjected to pure bending. And eight expansive concrete-filled rectangular steel tube beams subjected to pure bending were tested to investigate the pure flexural behavior in this paper. Compared with the experimental results, the analytical results are found to agree well with the former. According to the experimental results, the evaluation of flexural capacity under pure bending condition was suggested. At last, compared with other kind of beam, expansive concrete-filled rectangular steel tube beam has the advantage of bearing capacity, deformation and using date of materials. The results in this paper may be referenced in practiced engineering.
Keywords: concrete-filled rectangular steel tube; beam; pure bending; flexural bearing capacity
