摘要
石太客运专线的西小坪大桥主桥(DK107+921.80)采用预应力混凝土连续箱梁方案,桥跨布置为48 m+80 m+40 m,位于七度地震区,需要进行抗震设计.依据三水准抗震设计目标,对该桥进行了小震下的弹性验算及罕遇地震下的弹塑性抗震验算,分析结果表明该桥能够满足“小震不坏,大震不倒”的设防目标.
The project of Xixiaoping Bridge （DK107 ＋ 921.80） was chosen as pre-stress concrete continuous box girder bridge,whose span is 48 m＋ 80 m＋ 48 m. As the bridge located in the seismic area of 7 degree, the seismic design should be made. In this paper, an elasto-plastic seismic checking was performed according to the goal of three-level seismic design. The result shows that the bridge can meet the goal of ＂no damage in low-level earthquake;no collapsing in high-level earthquake＂.
出处
《兰州交通大学学报》
CAS
2007年第1期52-55,共4页
Journal of Lanzhou Jiaotong University
关键词
连续梁桥
弹塑性
抗震分析
continuous bridge
elasto-plastic
seismic analysis
