古城墙砖回弹检测技术研究

Research on rebound detection technology of ancient city wall bricks

以河北省范围内多项全国或省重点文物保护单位为对象,选取一定数量的古城墙砖,研究了竖向压力、含水率、不同约束条件等对其回弹测强的影响,建立了砌筑前后古城墙砖回弹值线性回归公式。并通过对古城墙砖回弹测强的研究,阐明了回弹值和抗压强度之间的相关性,建立了古城墙砖回弹测强的回归模型。通过实际工程项目的验证可知,该曲线的精度较好,可用于古城墙砖的回弹测强。

Based on a number of national or provincial key cultural relics protection units in Hebei province, a number of ancient city wall bricks were selected to study the influence of the vertical pressure, moisture content and different constraint conditions on rebound value. Linear regression formula of the ancient city wall brick rebound value before and after construction was set up. Through the study of the rebound value testing technology of ancient city wall bricks, the relationship between the rebound value and compressive strength was clarified and the ancient city wall brick rebound regression model was established. Through the validation of the actual project, the curve was proved to be precise to detect the rebound value and compressive strength of ancient city wall bricks.