正方形荷载下高强度砼局部承压试验研究

The Local Bearing Strength of High Strength Concrete Under the Square Load

重点研究正方形垫板下承压面积比及偏心距等因素对高强砼试件局部承压受力性能的影响．根据楔形体模型及极限平衡原理导出理论计算公式并建立实用计算公式．对于偏心受压，依据试验结果确定了偏心距与局压强度提高系数βｃ之间的线性关系以及Ａｄ的取值方法．

The paper is focused on the study of the influence of the factors such as the bearing area ratio.and its eccentricity on the local bearing strength of high strength concrete.Using the theoretical formula derived as reference,the equations for practical computation are established.A linear relationship between the eccetricity e i and the local bearing strength factor β as well as the simplified method calculation A d are determined for the case of eccetric load.