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混凝土收缩等使结构产生变形的因素,均可归结为对结构施加的一种瞬时的或随时间变化的强迫位移。本文将混凝土组合构件视为由几种彼此平行混凝土单元构成的组合单元,然后从这些单元在两类不同性质强迫位移作用下的内力衰减关系式出发,导出了考虑徐变效应后混凝土组合构件在上述强迫位移作用下的实际变形与内力计算公式。对复杂的混凝土组合构件体系,本文亦提出了相应的有限元解。公式的表达形式均宜于进行电算。
Factors such as concrete shrinkage that cause the structure to deform can all be attributed to an instantaneous or time-varying forced displacement imposed on the structure. In this paper, the concrete composite component is regarded as a composite unit composed of several parallel concrete units, and then from the attenuation relationship of these two types of internal forces under the action of two different types of forced displacement, the concrete composite component is deduced after considering the creep effect. The actual deformation and internal force calculation formula under the above-mentioned forced displacement. For the complex concrete composite component system, the corresponding finite element solution is also proposed in this paper. The expression of the formula is suitable for calculation.