一、非破损检测结构混凝土强度的第一条件值计算公式采用非破损方法检测结构混凝土评估其强度时,按照《回弹法评定混凝土抗压强度技术规程》JGJ-23-85(以下简称回弹法规程)和拟议中的《“超声一回弹”综合法评定混凝土抗压强度技术规程》(以下简称综合法规程草稿)规定的方法,是按下列两个公式分别计算评估混凝土抗压强度的第一条件值和第二条件值,取其中较小值作为评定结构或构件混凝土的抗压强度: Rn_1=1.18((?)n-K·Sn)(1) Rn_2=1.18(Rn_1)小(2) First, non-breakage detection structure of the first condition of the concrete strength calculation formula using non-destructive method to test the structure of concrete to assess its strength, according to the “rebound method to assess the technical code of concrete compressive strength” JGJ-23-85 (hereinafter referred to as rebound The method specified in the “statistical procedures” and the proposed “Ultrasonic-rebound” comprehensive method for assessing the compressive strength of concrete (hereinafter referred to as the “comprehensive draft”) is based on the following two formulas to calculate and evaluate the compressive strength of concrete. The first condition value and the second condition value, whichever is less, are used as the compressive strength of the concrete for evaluating the structure or component: Rn_1=1.18((?)nK·Sn)(1) Rn_2=1.18(Rn_1)small (2)