近五年中国特色社会主义基本经济制度研究评析

在自然环境下，钢 混凝土双面组合箱梁受一天中日照变化的影响，在梁体内部会产生相应的温度应力和变形。以三跨钢 混凝土双面组合箱梁为研究对象，对组合梁在6:00至18:00日照条件下的温度应力与位移进行计算分析。利用有限元软件ANSYS10.0建立三跨连续组合箱梁有限元模型，采用间接耦合解法进行热 结构耦合场的运算。得到了温度应力与温度位移的分布规律及时程分析，并对箱梁混凝土底板对温度效应的影响进行探讨。

The Basic Economic System of Socialism with Chinese Characteristics Research Evaluation and Analysis in Nearly Five Years

In the natural environment, temperature stresses and flexure will occur in the double steel concrete composite box girder from the change of sunshine during daytime. In this paper, with a double steel concrete composite three span continuous box girder as an example, temperature stresses and flexure are calculated and analysed in the action of the sunlight during 6:00 18:00. A modal of a double steel concrete composite three span continuous box girder is built by the finite element program ANSYS. The thermal structure coupled field is calculated using indirect coupling approach. The regularities of distribution and time procedure analysis of the flexure and stress are derived. The effect of the bottom concrete slab is also investigated.