【摘要】 本文论述了安定定理的基本概念。对三根钢筋砼连续梁和三榀钢筋砼门架进行交变荷载试验表明,试验结果与理论安定分析是一致的,从而初步证明了安定定理同样适用于钢筋砼结构。 理论分析和试验都表明,交变荷载比同样大小的简单加载情形更为不利。考虑交变荷载作用,按安定极限状态进行设计,可获得确切的可靠度和一定的经济效果。更多还原

【Abstract】 Three reinforced concrete continuous beams and three portal frames have been tested under variable repeated loading. The theoretical shakedown values obtained by analyzing the continuous beams and the portal frames are almost consistant with the experimental results. It can be verified preliminarily that the shakedown theorem is also applicable to reinforced concrete structures.Shakedown analysis and experiments revealed that with equal magnitude of loading, the variable repeated loading is more disadvantageous than a simply applied load to a structure. If the effects of variable repeated loading were considered in shakedown, a confident value of reliability of the structure with a definite economical results could be obtained.更多还原