矩形钢管混凝土梁的抗弯承载力仿真分析  

Analysis of Bending Capacity of the Concrete-filled Rectangular Steel Tube Beams

作　　者：赵艳艳[1] 吴乃森[1] 王元生[1] 吴志坤[1] 

机构地区：[1]西北工业大学,陕西西安710129

出　　处：《计算机仿真》2011年第9期382-385,共4页Computer Simulation

摘　　要：研究钢管混凝土承载力优化问题,根据矩形钢管的截面对混凝土纯弯构件抗弯承载力有影响,钢材屈服强度以及钢管壁厚的增大,构件的抗弯承载力显著提高,而混凝土强度对其几乎没有影响。利用有限元软件对矩形钢管混凝土纯弯构件进行了数值仿真,在研究中引入了强重比的概念,当截面尺寸和混凝土强度等参数相同时,钢管壁厚按规范取最小值的钢管混凝土纯弯构件的强重比大于以最大配筋率配筋的钢筋混凝土构件的强重比,实验表明钢管混凝土构件的力学性能较优越。在构件截面尺寸受条件限制时,证明钢管混凝土构件承载力具有明显优势:。Numerical simulation on the CFRT members subjected to pure bending was developed using a finite el- ement software in this paper, and the factors that affect the bending capacity of the CFRT members were analyzed. The results show that with the increase of steel yield strength, height-width ratio of a section and wall thickness, the bending capacity increases significantly, while the increase of concrete strength has little impact on the bending ca- pacity. In addition, the concept of ratio of strength to weight was introduced in this study, and it has been found that the ratio of strength to weight of the CFRT members with the rule minimum wall thickness is larger than that of the re- inforced concrete members with the maximum reinforcement ratio, while they has the same other parameters, such as section size and concrete strength. This shows that the mechanical properties of the CFRT members are much superi- or. When the section size of the members is limited, the CFRT members will perform more obvious advantages.

关 键 词：矩形钢管混凝土 抗弯承载力 非线性 影响因素 强重比 

分 类 号：N945.12[自然科学总论—系统科学]