Shrinkage and Creep Analysis of a Continuous Rigid-frame Bridge with Density Gradient Concrete

被引：3

作者：

Lu, Zhifang ^{[1
]}

Liu, Muyu ^{[1
]}

机构：

[1] Wuhan Univ Technol, Hubei Key Lab Roadway Bridge & Struct Engn, Wuhan 430070, Peoples R China

来源：

ADVANCED BUILDING MATERIALS, PTS 1-4 | 2011年 / 250-253卷 / 1-4期

关键词：

continuous rigid-frame bridge; shrinkage and creep; first principal stress; mid-span deflection;

D O I：

10.4028/www.scientific.net/AMR.250-253.2506

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In consideration of the excessive mid-span deflection and box girder cracks of continuous rigid-frame bridges, this paper analyzes the maximum first principal stress and mid-span deflection increment of a continuous rigid-frame bridge with density gradient concrete under shrinkage and creep effect. The maximum first principal stress increment at main span is 0.084MPa and mid-span deflection increment is 73mm after 10 years for continuous rigid-frame bridge with density gradient concrete, which are smaller than a continuous rigid-frame bridge with normal concrete. All of that show that continuous rigid-frame bridge with density gradient concrete reduces effect of shrinkage and creep. The research provides a theoretical basis for the successful application of continuous rigid-frame bridge with density gradient concrete.

引用

页码：2506 / 2509

页数：4