分析逆作法施工中竖向承重结构柱与钢环板的现场焊接作业存在的不足,结合具体案例研究其解决方案和具体施工工艺流程及操作要点。提出了利用建筑信息模型(building information modeling,BIM)技术,对钢环板与竖向承重结构柱以及水平梁...分析逆作法施工中竖向承重结构柱与钢环板的现场焊接作业存在的不足,结合具体案例研究其解决方案和具体施工工艺流程及操作要点。提出了利用建筑信息模型(building information modeling,BIM)技术,对钢环板与竖向承重结构柱以及水平梁板的结构位置进行建模,形成可视、直观的三维模型,并采用工厂化预制,结合BIM 5D信息化管理技术,预制建筑构件,并准确定位构件,实现快速配对施工的解决方案,以期为相关施工作业人员提供参考。展开更多
In order to investigate the springback performance of a cold-rolled transformation-induced plasticity （TRIP） steel sheet during cyclic bending, three-points bending experiments were performed. The specimen was first...In order to investigate the springback performance of a cold-rolled transformation-induced plasticity （TRIP） steel sheet during cyclic bending, three-points bending experiments were performed. The specimen was firstly forward bended and then reversed bended according to three basic punch strokes, 10 mm, 20 mm and 30 mm, respectively. The outlines of the deformed specimens, punch load and crosshead displacement were obtained. The experimental procedures and the method of determining the springback displacement were reported in detail. The contributi^m of the strain hardening and decrease of elastic modulus to the overall springback was explained. The results demonstrated that springback increases both with the cycles and with the punch stroke during the cyclic bending process. Furthermore, springback in forward bending is larger than that in the corresponding reverse bending. This may be helpful to understand the complex springback behavior of the complicated sheet metal pancls.展开更多
文摘分析逆作法施工中竖向承重结构柱与钢环板的现场焊接作业存在的不足,结合具体案例研究其解决方案和具体施工工艺流程及操作要点。提出了利用建筑信息模型(building information modeling,BIM)技术,对钢环板与竖向承重结构柱以及水平梁板的结构位置进行建模,形成可视、直观的三维模型,并采用工厂化预制,结合BIM 5D信息化管理技术,预制建筑构件,并准确定位构件,实现快速配对施工的解决方案,以期为相关施工作业人员提供参考。
基金Sponsored by the National Natural Science Foundation of China(Grant No.51175382)the Fundamental Research Funds for the Central Universities
文摘In order to investigate the springback performance of a cold-rolled transformation-induced plasticity （TRIP） steel sheet during cyclic bending, three-points bending experiments were performed. The specimen was firstly forward bended and then reversed bended according to three basic punch strokes, 10 mm, 20 mm and 30 mm, respectively. The outlines of the deformed specimens, punch load and crosshead displacement were obtained. The experimental procedures and the method of determining the springback displacement were reported in detail. The contributi^m of the strain hardening and decrease of elastic modulus to the overall springback was explained. The results demonstrated that springback increases both with the cycles and with the punch stroke during the cyclic bending process. Furthermore, springback in forward bending is larger than that in the corresponding reverse bending. This may be helpful to understand the complex springback behavior of the complicated sheet metal pancls.
