摘要
针对大体积或大面积混凝土浇筑时由于温度应力引起的混凝土开裂问题而设置的后浇带,逆作法施工时,传统的处理方法是设置传力带和临时立柱,这种方法既不经济又影响施工进度,提出应用型钢-混凝土组合梁结构,并采用大型有限元软件进行了理论计算分析。分析该型钢-混凝土组合梁结构的抗弯、抗剪及抗压的整体受力性能,此外还对锚固段进行细部结构的三维有限元应力分析,从而确定了该项目所采用的组合梁锚固长度取1.0 m(即2倍梁高)较为合理。
When the late-poured band,which usually is reserved to solve the problem of concrete cracking caused by temperature stresses in the process of pouring the mass concrete,is constructed by inverse construction method,the traditional method is to installing the transfer band or temporary upright post.But the traditional method is an uneconomical method that often delays the construction schedule.A new type of structure called steel reinforced concrete composite beam were put forward in the paper to solve above problem.Meanwhile,finite element software were used to calculate and analyze the new type structure of steel reinforced concrete composite beam theoretically,including the bending resistance,shear resistance,pressure resistance and overall structural behavior.Besides,the detail structure stresses of the anchorage zone were also analyzed accurately by three-dimensional finite element software.Consequently,the most suitable anchorage length was identified as 1.0 m(that is two times of the beam's height).
出处
《铁道标准设计》
北大核心
2012年第12期88-91,共3页
Railway Standard Design
关键词
地铁车站
逆作法
后浇带
型钢混凝土组合梁
三维有限元
metro station
inverse construction method
late-poured band
steel reinforced concrete composite beam
three-dimensional finite element
