叠合楼板荷载传递方式研究  

Study on the Load Transfer Mode in Composite Floor Slabs

作　　者：刘海成[1] 郑旭[1] 

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168

出　　处：《沈阳建筑大学学报（自然科学版）》2015年第5期813-820,共8页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家软科学研究计划项目(2013GXS4D109);沈阳市建委基金项目(sjw2013-04)

摘　　要：目的研究装配式混凝土结构叠合楼板在竖向荷载作用下荷载传递方式,为剪力墙、叠合梁竖向荷载计算提供参考.方法基于ABAQUS有限元模拟软件对不同预制板与现浇层厚度、不同长宽比的9组叠合楼板进行模拟,并与同厚度尺寸现浇板荷载传递系数对比,得到叠合楼板按现浇板方式传递荷载的误差率.结果与同厚度尺寸现浇板对比,平行拼缝方向传递的荷载大于理论值,垂直拼缝方向传递的荷载小于理论值,其误差小于3%.结论叠合楼板竖向荷载计算时,荷载传递方式可与现浇板相同.建议在装配式剪力墙结构设计中,与拼缝垂直的剪力墙轴压比限值应减小3%.In order to supply references for calculation of shear walls and composite beams,the load transfer mode in composite floor slabs under the vertical load was studied in this paper. Nine composite floor slabs with different precast slabs,cast-in-place layer thickness and the different aspect ratios were simulated based on the ABAQUS. In compassion with the load transfer ratio of the cast-in-place floor slab with the same thickness and size,the error rate of the load transfer in composite floor slab was obtained. It is found that compared with the cast-in-place floor slab with the same size,the transfer load value along the direction parallel to seam is great than the theoretical value,but along the direction vertical to seam less than the theoretical one. The transfer error is less than 3%. Conclusion is that for calculation of vertical load in composite floor slabs,the load transfer mode in cast-in-place floor slabs can be applied. But the axial compression ratio limit of shear walls vertical to seam should be reduced 3% in the precast shear wall structure design.

关 键 词：装配式混凝土结构 叠合楼板 荷载传递 轴压比 

分 类 号：TU375.2[建筑科学—结构工程]