摘要
当墩身较高时,大跨度连续刚构桥0号块一般采用托架施工,但因0号块荷载较大,托架预压成为施工时的一项重要工作。基于现场试验数据,并通过有限元分析,对湖南省默戎高架桥主桥0#块托架的预应力预压方案进行可行性研究。研究表明,预应力预压方案切实可行,可供类似工程借鉴。
The construction technology of bracket is applied to pier table construction of a Superlong Frame-Continuous bridge while the measure of pier shaft is high. Preloading technology of bracket is an important procedure of construction owing to larger load at pier table. Finite element analysis is used to study the prestress preloading technology of pier table bracket for Morong viaduct in Hunan province based on field data. Result shows that the prestress preloading technology is feasible and it also can provide references for other projects.
出处
《公路工程》
北大核心
2016年第2期260-264,共5页
Highway Engineering
关键词
连续刚构桥
高墩
托架预压
预应力
有限元
continuous rigid-framed bridge
high-piers
bracket structure preloading
prestress technology
finite element analysis
