粉煤灰混凝土简支梁承载特性研究

STUDY ON BEARING CAPACITY OF FLY-ASH CONCRETE SIMPLY SUPPORTED BEAM

粉煤灰混凝土简支梁的承载特性及破坏特征一直是工程界最为关注的课题之一。基于此,文中首先结合室内实验,对粉煤灰混凝土简支梁逐级加载受压过程中的挠度、应力变化及裂纹渐进萌发过程进行分析;然后借助ABAQUS软件建立数值模型,对不同加载条件下粉煤灰简支梁的承载特性及破坏过程进行数值模拟。同时,将计算结果与室内实验结果进行了对比分析。

The bearing characteristics and failure characteristics of fly ash concrete simply supported beams have been one of the most important topics in engineering. Based on this, firstly, the deflection, stress variation and progressive crack germination process of fly ash concrete simply supported beams under progressive loading are analyzed by indoor experiments in the paper. With the help of ABAQUS software, a numerical model is established to simulate the bearing capacity and failure process of simply supported fly ash concrete beam under different loading conditions. At the same time, the resuits are compared with the indoor experimental results.