摘要
针对某大跨度预应力混凝土连续箱梁桥在施工阶段出现边跨支点附近底板"八字形"裂缝情况,采用通用有限元分析软件ANSYS9.0对该桥边跨现浇段进行锚下局部应力计算分析。分析结果表明,过大的边跨底板纵向预应力可能是造成开裂的主要原因。
In view of the bottom slab crack in side spans of a large span P.C. continuous box girder bridge occurred in the construction,the common finite element ANSYS9.0 software is used for analyzing the local stress under the anchorage of this bridge in casted side spans.Results of the analysis show that vertical side spans prestressed in bottom slab is the main reason that causing cracking.
出处
《现代交通技术》
2010年第3期45-47,共3页
Modern Transportation Technology
关键词
连续箱梁桥
开裂
有限元
局部应力
continuous box girder bridge
cracking
finite elemem
local stress
