摘要
利用SAP2000软件对预应力张拉施工过程进行分析可知,考虑钢筋混凝土框架、肋梁楼盖以及支撑体系共同工作后,预应力张拉对边跨框架梁及其附近楼板内力和变形影响较大;考虑楼板的约束作用,框架梁反拱值、梁端压缩值和梁混凝土应力等与实测值较接近;考虑肋梁楼盖的三维计算模型更能反映实际工作状况。
The analysis of prestressed stretching construction by software SAP2000shows that prestressed stretching has a big influ-ence on the internal force and deformation of side span frame girder and nearby floor slab when the joint action of reinforced concrete frame,ribbed beam floor and bracing system is put into consideration.The inverted arch value of frame girder,compression value of beam end and concrete stress of the beam approximate to the measured value when the restriction of the floor is put into consideration.The model can reflect the actual work situation more accurately when three dimensional calculation of ribbed beam floor is considered.
出处
《建筑技术》
北大核心
2003年第12期901-903,共3页
Architecture Technology
关键词
预应力
张拉
框架结构
内力
prestress
stretching
frame structure
internal force
