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采用ANSYS非线性有限元分析方法,分析了压型钢板与钢梁连接螺钉间距、钢材屈服强度、混凝土强度、C型钢梁板厚、钢筋混凝土翼板厚度、压型钢板型号、钢梁间距、楼盖宽度、钢梁跨高比及腹板高厚比等因素对冷弯薄壁型钢-混凝土组合楼盖受弯承载力和延性的影响。研究表明:压型钢板与钢梁连接螺钉间距、钢材强度、钢梁板厚、压型钢板型号、钢梁间距、楼盖宽度、钢梁跨高比和腹板高厚比等因素对组合楼盖受弯承载力影响较显著,而混凝土强度则影响较小;钢筋混凝土翼板厚度在50～100 mm范围内时,组合楼盖受弯承载力随混凝土翼板厚度增加呈线性增长,当翼板厚度大于100 mm后,其受弯承载力将不再提高;混凝土强度、钢梁间距及楼盖宽度不影响组合楼盖的延性。组合楼盖可简化为T形截面组合梁模型计算。
The ANSYS nonlinear finite element analysis method was used to analyze the relationship between the connecting screw spacing, the yield strength of steel, the strength of concrete, the thickness of C-beam, the thickness of reinforced concrete wing, the profiled steel plate, the spacing of steel beams, Width, the span ratio of steel beams and the ratio of web height to thickness on the flexural capacity and ductility of cold-formed thin-walled steel-concrete composite floor. The results show that the connection between the profiled steel plate and the steel beam, the strength of the steel plate, the thickness of the steel plate, the profile of the profiled steel plate, the spacing of the steel beam, the width of the floor, the span ratio of the steel beam, But the effect of concrete strength is less. When the thickness of RC wing is in the range of 50 ~ 100 mm, the flexural bearing capacity of composite floor increases linearly with the increase of concrete slab thickness. When the thickness of wing Beyond 100 mm, the flexural capacity will no longer increase; concrete strength, steel beam spacing and floor width does not affect the ductility of the composite floor. Combination floor can be simplified as T-section composite beam model calculation.