RELIABILITY ASSESSMENT FOR CONCRETE CONTINUOUS SLAB OF EXISTING INDUSTRIAL MILL BUILDING
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摘要: 钢筋混凝土连续板经过一段时间的使用,其抗力和荷载效应都与设计时的不同。采用串联分析模型,计算结构体系的失效概率。即结构体系中有一个构件失效,则整个结构体系失效。连续板的失效概率应为荷载出现概率和相应荷载作用下的失效概率乘积的总和。以此对结构的安全性进行评估,为厂房的维修决策提供依据。Abstract: Being used for many years, the existing concrete continuous slab differs from functional design in performance?and load- appearance.This paper presents the series analytic model to calculate structural failure probability.It is that the?whole structural system should fail only if one of the structural members fails.The failure probability of the continuous slab?is the sum of the product of load- appearance probability and the failure probability under the action of the corresponding?load.Therefore, we can assess the safety of the structure and provide a theoretical basis for maintenance of existing?industrial mill building .
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Key words:
- concrete structure /
- failure probability /
- failure mechanism /
- reliability index
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[2] Chueng M S, Kyle B R. Service Life Prediction of Concrete Structures byReliability. Construction and Building Materials, 1996, (1):45~55; 张俊芝.验证荷载对服役结构抗力的影响分析.南昌大学学报, 2001(2):187~191; [3] 张爱林, 赵国藩, 王光远.多种情况下的工程结构可靠度.大连理工大学学报, 1996(6):771~775; [4] Frangopol D M, Lee Y- H, Willam K J. Nonlinear Finite ElementReliability A nalysis of Concrete. Journal of Engineering Mechanics, 1996, 122(12):.174~.182; [5] 李惠强.建筑结构诊断鉴定与加固维修.武汉:华中科技大学出版社, 2002
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