摘要
提出在主次梁交接处至支座处加设型钢,形成局部型钢混凝土(steel reinforced concrete, SRC)二次转换结构。采用有限元法研究不同剪跨比下局部SRC二次转换结构的抗剪、抗扭、缓解应力集中能力,并与SRC二次转换结构、钢筋混凝土(reinforced concrete, RC)二次转换结构进行受力性能比较。结果表明:局部SRC二次转换结构能明显缓解应力集中和扭转效应不利因素,当剪跨比为0.65~1.90时,其抗扭、抗剪效果最佳。
A secondary transfer structure was proposed, which added section steel at the junction of orthogonal and secondary beams to the bearing, making up local SRC secondary transfer structures. Finite element method (FEM) was used to study the shear resistance, torsion resistance and stress concentration relief ability of the local SRC secondary transfer structures under different shear span ratios. These mechanical properties were compared with those of SRC secondary transfer structures and reinforced concrete’s secondary transfer structures. Results show that local SRC secondary transfer structures can effectively relieve the stress concentration and the torsion effect, and their torsion resistance and shear resistance effects are the best when the shear span ratio falls in the range of 0.65~1.90.
作者
邓智元
陈思坚
DENG Zhiyuan;CHEN Sijian(School of Civil Engineering, Fujian University of Technology, Fuzhou 350118, China;Fujian Provincial Key Laboratory of Advanced Technology and Informatization in Civil Engineering, Fuzhou 350118, China)
出处
《福建工程学院学报》
CAS
2019年第3期219-223,共5页
Journal of Fujian University of Technology
关键词
二次转换
局部SRC转换梁
应力集中
扭转效应
secondary transfer
local SRC transfer beam
stress concentration
torsion effect
