论文部分内容阅读
利用COSMOS/M2.6软件,考虑材料非线性,模拟并分析双向组合楼板的极限承载性能。通过与文献中双向组合楼板足尺试验的对比,验证所建有限元模型的正确性。研究楼板宽高比、长细比等参数的影响;考虑表面平整及剪力钉的影响;研究固定于板底翼板,垂直于波纹方向冷弯钢板厚度及其分布的影响;研究各初始参数对极限承载力,强、弱轴方向应力分布及板挠度的影响。在正常使用极限状态下,进行双向组合楼板的性能研究。与单向组合楼板比较,双向组合楼板承载力及弱轴方向的应力有较大提高。由于使用钢板和剪力钉,组合楼板挠度增大。
Using COSMOS / M2.6 software, considering the material nonlinearity, the ultimate bearing capacity of two-way composite slab is simulated and analyzed. The correctness of the constructed finite element model is verified by comparison with the full-scale two-way composite floor test in the literature. The effect of surface roughness and shear nails was considered. The influence of surface roughness and thickness of shear plate perpendicular to the corrugation direction and the distribution of shear stress were studied. The effects of initial parameters Effect on ultimate bearing capacity, stress distribution in the direction of strong and weak axis and plate deflection. In the normal use of the limit state, the performance of the two-way composite floor. Compared with the unidirectional composite floor, the bearing capacity of the two-way composite floor and the stress in the direction of the weak axis are greatly increased. Due to the use of steel and shear nails, the combined floor deflection increases.