【体外无粘结预应力混凝土梁设计方法的理论与实验研究】张耀庭.pdf

DissertationSubmittedinPartialFulfillmentof theRequirements fortheDegreeof DoctorofEngineering Theoretical and Experimental Study on Design Methods ofExternal Unbounded Prestressed ConcreteBeams Ph.D.Candidate:ZhangYaoting Major:Structural Engineering Supervisor:Prof.

华中科技大学博士学位论文新规范(GB50010-2002)中的裂缝宽度公式计算体外预应力梁的裂缝宽度是可以满足工程需要的.论文讨论了体外筋面积的变化对体外预应力梁可靠度的影响,将其离散化为多个正态分布的随机变量,并根据独立同分布随机变量的极值理论,讨论了体外无粘结配筋对结构可靠度的影响问题。分析结果表明,体外无粘结预应力钢筋截面面积沿长度方向的变化,引起结构可靠指标的降低是比较明显的,可靠指标随着独立同分布随机变量的数目的增大而减小。

华中科技大学博士学位论文 practical,Theformulas presented tocalculate thetemporaryrigidity ofbeamsregards the external unbonded prestressed concrete beam as a partially pressed member and has included the second-order effect.Additional,theoretical studyindicates that using the formulain theCodeforDesignof Concre