摘要
本文提出了一种确定补偿收缩混凝土结构预压应力的新方法,理论计算求出补偿收缩混凝土结构的约束系数,再通过钢筋模拟约束试验测定预压应力。这样既将补偿收缩混凝土的预压应力试验与实际结构联系起来,又避免了纯理论计算带来的近似性。
In this paper a new method to determine the pre-compressive stress in the structure of shrinkage-compensating concrete is proposed. The constraint coefficient of the structure is first to be obtained by theoretical calculation and pre-compressive stress is determined by laboratory tests using steel-reinforced concrete specimens with the same raw materials and the same constraint coefficient of the concrete structure considered. This method relates the laboratory tests closely to the real structure and avoids some uncertainties introduced by pure analytical methods currently used to determine the pre-compressive stress in the shrinkage-compensating concrete.
出处
《膨胀剂与膨胀混凝土》
2011年第3期6-11,共6页
Expansive Agents & Expansive Concrete
关键词
补偿收缩混凝土
预压应力
约束分析试验法
约束系数
shrinkage-compensating concrete,compressive prestress,constraint analysis-test method,constraint coefficient
