对滑模施工工艺来说,混凝土的出模强度是一个重要的起控制作用的工艺参数。我国从1978年开始试行的《液压滑升模板工程设计与施工规定》(以下简称“规定”)中认为:“混凝土的合适出模强度,一般宜控制在0.5～2.5公斤/平方厘米。相当于用贯入阻力法测得的贯入阻力5～35公斤/平方厘米。”这个混凝土出模强度控制值与日本、美国等国家所规定的混凝土出模强度控制值(日本:下限0.05MPa,美国0.1～0.7MPa)接近。“规定”中之所以确定0.05～0.25MPa(0.5～2.5公斤/平方厘米)这个控制范围,主要是基于以下三点考虑的: 1. 出模后的混凝土必须具有在上部结构混凝土自重作用及施工环境影响下,保持自身几何形状不变,即不流淌、不坍塌的能力,以此条件来确定滑模混凝土出模强度的下限值: 2. 模板滑升时,模板与混凝土的交界面上有一个摩阻力,混凝土出模强度越高, For the slipform construction process, the strength of the concrete is an important process parameter that controls the process. China’s “Lifting Hydraulic Slip Formwork Design and Construction Regulations” (hereinafter abbreviated as “Regulations”), which was initiated in 1978, states: “The appropriate concrete strength for concrete is generally controlled at 0.5 to 2.5 kg/cm2. The penetration resistance measured by the penetration resistance method is 5 to 35 kg/cm2.” The control value of the concrete die strength and the control value of the concrete die strength specified by Japan, the United States, etc. (Japan: Lower limit 0.05 MPa, US 0.1 to 0.7 MPa) is close. The reason for determining the control range of 0.05 to 0.25 MPa (0.5 to 2.5 kg/cm2) in the ”Regulations" is mainly based on the following three considerations: 1. The concrete after ejection must have the self-weight effect and construction of the concrete in the superstructure. Under the influence of the environment, to maintain its own geometric shape, ie, the ability to not flow or collapse, the lower limit of the strength of slipform concrete is determined by the following conditions: 2. When the template rises, the interface between the formwork and the concrete There is a friction resistance, the higher the concrete strength,