钢筋混凝土空腹楼板力学性能分析-结构工程专业论文.docxVIP

华 华 中 科 技 大 学 硕 士 学 位 论 文 II II Abstract Reinforced concrete hollow floor is a new kind of hollow plates in which many small boxes are embedded along the plane of the plates orderly as inter forms. It is widely used in today’s building with large bay and large column span. Some researches on structural behavior of reinforced concrete hollow floor have been done by individual and scientific research institutions. However, the lack of thoroughly research on the force mechanism of the floor and the mechanical property of the construction members still exists. Therefore, some discussions based on those topics were done in this paper. In this article, the floor systems which used widely in the factual civil engineering were summed up comprehensively, and the present numeration of reinforced concrete hollow floor in our country were also introduced. The reinforced concrete hollow floor with box core was modeled and calculated by ANSYS finite element analysis software as a tool in this article. The calculation considered the material nonlinearity of concrete and steel. Uniform passenger area load which applied to the roof was increasing until the floor was in full destruction. The effect of each part on stiffness and bearing capacity was analyzed with the help of the load-deflection curves from model calculation changing the quantity of reinforcement, the thickness of top board, the width of ribs and the orientation of ribs respectively to put forward some countermeasures. At last, a brief analysis on similarities and differences between the reinforced concrete hollow floor with bottom board and the reinforced concrete hollow floor without bottom board was shown. Conclusion and prospect were given at the end of the article. The research shows that：The mechanical properties of the hollow floor were close to the plate floor. The top board, the bottom board and the ribs of the floor worked individually, which made the hollow floor present the performance characteristics of s