摘要
以湖南某在建特大箱梁桥为研究背景,通过现场温度测量结合公式拟合得到实际温度梯度,应用ANSYS软件建模计算分析不同截面参数箱梁日照温差下顶板下缘横向温度应力的变化,比较了施工阶段日照温差应力和自重作用对顶板开裂的影响,为预防顶板中线下缘开裂提供理论依据.
Taking a box girder bridge ot taunan as ressearch, achieved by combining temperature measurement of site with formula, the roof transverse thermal stress is obtained by measuring the stress of site and using the software ANSYS to calculate and analysis the temperature change of the lateral edge of the roof under stress parameters and under different sections of difference temperature. The impact of sunshine thermal stress and weight effects on the roof cracking are compared. This paper provides theoretical basis of preventing cracking under roof edge.
出处
《湖南工程学院学报（自然科学版）》
2014年第3期81-85,共5页
Journal of Hunan Institute of Engineering(Natural Science Edition)
