先简支后连续桥梁扁锚负弯矩整体张拉与单根张拉对比试验研究  

Comparative Experimental Study on Overall Tensioning and Single Tensioning of Negative Moment of Flat Anchors in Simply Supported and Then Continuous Bridges

作　　者：廖辉红 LIAO Hui-hong(Hunan Lianzhi Technology Co.,Ltd.,Changsha 410001,China)

机构地区：[1]湖南联智科技股份有限公司,长沙410001

出　　处：《价值工程》2023年第15期155-158,共4页Value Engineering

基　　金：湖南省交通运输厅科研计划项目(201809)。

摘　　要：先简支后连续桥梁扁锚负弯矩的张拉效率、锚下有效预应力一直是工程关注的焦点,本文通过对扁锚单根张拉和整体张拉的对比试验发现采用整体张拉在张拉效率、张拉质量和经济效益上明显优于单根张拉,可为工程选择张拉工艺作参考.The tensioning efficiency of negative bending moment and effective pre-stress under the anchor of a simply supported and then continuous bridge flat anchor have always been the focus of engineering attention.This article found through comparative experiments between single and overall tensioning of flat anchors that using overall tensioning is significantly better than single tensioning in terms of tensioning efficiency,tensioning quality,and economic benefits.This can serve as a reference for selecting tensioning technology for engineering.

关 键 词：负弯矩 扁锚 整体张拉 对比试验 

分 类 号：U445[建筑科学—桥梁与隧道工程]