中文摘要：

通过室内模型试验和数值模拟研究裂缝对简支梁应变分布的影响。研究结果表明：裂缝对应变的影响区域集中在裂缝附近的较小范围内,该区域的大小与梁体所受静力荷载的大小及裂缝在梁体上的位置无关,但随裂缝深度的增加而增大。

英文摘要：

This paper researches the influences of cracks on strain distribution of simply supported beams via indoor model test and numerical simulation. The results of research show that the area of influence of cracks on strain concentrates in small range in the vicinity of cracks,which is independent from static load on beams and positions of cracks on beams,but increases with the depth of cracks.