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预应力混凝土是否一定要“全”预应力的而不能是“部分”预应力的?这是国外预应力混凝土设计思想上长期争论的一个问题。这一争论直到1970年召开的第六届国际预应力混凝土会议,才基本解决,接受了欧洲混凝土委员会(简称 CEB)和国际预应力混凝土协会(简称 FIP)联合提出的按预应力大小程度将预应力混凝土分为三级的建议。也认识到“全”预应力混凝土与普通钢筋混凝土并不是两种绝然不同的结构材料,而是以钢筋作配筋的加筋混凝土系列的两个极端,并可通过预应力大小程度不同的“部分”预应力混凝土而相互转化。这
Is prestressed concrete necessarily “completely” prestressed and not “partially” prestressed? This is a long-running controversy over foreign prestressed concrete design ideas. This debate was not resolved until the 6th International Prestressed Concrete Conference held in 1970. It was accepted by the European Concrete Council (abbreviated as CEB) and the International Prestressed Concrete Association (abbreviated as FIP). Stress concrete is divided into three levels of advice. It is also recognized that “all” prestressed concrete and ordinary reinforced concrete are not two absolutely different structural materials, but are two extremes of a series of reinforced concrete with steel reinforcement, and can pass through the prestressing degree Different “parts” of prestressed concrete and mutual transformation. This