市政桥梁工程现浇结构支架预压试验  

作　　者：张凯 

机构地区：[1]中国三冶集团有限公司宁波分公司

出　　处：《科技创新与应用》2019年第33期109-110,共2页Technology Innovation and Application

摘　　要：在市政桥梁工程施工中,有时为满足外观造型的需要,往往局部跨采用钢筋混凝土现浇结构,现浇结构能够较好的发挥钢筋与混凝土的力学性能,在整体桥梁受力分析过程中,相较预制梁安装的铰接点,有较强的可靠性,在现浇结构中的支撑架体系起到了非常重要的作用,为结构的施工提供了安全的作业环境,支撑架体系中为了避免上部重量对基础的压力出现杆件自身弯曲、支撑结构间隙、基础沉降等弹性及非弹性变形,往往采用预压试验的方式来解决上述问题。In the construction of municipal bridge engineering,sometimes in order to meet the needs of appearance modeling,reinforced concrete cast-in-place structure is often used in local span,and the cast-in-place structure can give full play to the mechanical properties of steel bar and concrete.In the process of stress analysis of the whole bridge,the hinge joint installed by the precast beam has stronger reliability,which plays a very important role in the support system of the cast-in-place structure,and provides a safe working environment for the construction of the structure.In order to avoid the elastic and inelastic deformation of the upper weight on the foundation,such as the bending of the member itself,the clearance of the supporting structure,the settlement of the foundation and so on,the preloading test is often used to solve the above problems.

关 键 词：斜交桥梁 预压试验 结构 

分 类 号：U445.57[建筑科学—桥梁与隧道工程]