刚构连续梁桥试验模型施工期预应力空间效应分析  

Analysis on pre-stressed spatial effect in construction period of concrete continuous beam bridge test model

作　　者：梁美 刘学瑞 

机构地区：[1]郑州工业应用技术学院,河南新郑451150

出　　处：《山西建筑》2016年第30期183-185,共3页Shanxi Architecture

摘　　要：以东营黄河公路大桥为背景,采用有限元对大型复杂桥梁进行施工前的模拟分析,研究了该桥在模型制作过程中,预应力钢束张拉时纵向和0号块暂态结构的空间力学行为,研究表明:一次性全部张拉时,结构受力最好;先张拉跨中预应力钢束时,结构刚度较好;张拉全桥纵向预应力钢束时,各控制截面箱梁断面关键点应力分布较好。Taking the Yellow River highway bridge in Dongying as the background,using the finite element made simulation analysis on large complex bridge before construction,researched the space mechanical behavior of longitudinal and block 0 transient structure of pre-stressed steels tension in bridge modeling process,the research showed that： in one-time full tension,the structure had best force,in pre-tensioned span prestressed steel beam,the structure had better stiffness,in full bridge longitudinal pre-stressed steel beam,the section key point stress of each section box girder control points had better distribution.

关 键 词：大跨度 连续梁 预应力 空间效应 

分 类 号：U448.23[建筑科学—桥梁与隧道工程]