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本文提出混凝土圬工梁的一种深入的结构工程和结构可靠性的分析。详细地研究了圬工梁的延性响应。基于结构可靠性原理,本文提出钢筋混凝土圬工梁的极限状态设计方法学。研究出确认为极限状态设计安全的能力降低系数推荐值。钢筋遍及梁截面均匀分布。获得并提出三种不同的延性定义(应变、曲率和位移)。本文还系统陈述确定对圬工梁内钢筋量限制的结构可靠性分析方法。导出在屈服和极限状态的预期能力方程。本文的一个重要部分,是对由设计变数的变化产生的不同极限状态的混凝土圬工梁设计能力的不定性,使之定量。进行了蒙特卡罗分析,使材料性质,结构工程方程和施工质量控制的不定性结合在一起。
This paper presents an in-depth structural engineering and structural reliability analysis of concrete masonry beams. The ductile response of the completed beam was studied in detail. Based on the principle of structural reliability, this paper puts forward the ultimate state design methodology for reinforced concrete beams. The capacity reduction factor recommendation value that confirms the design safety as the limit state is studied. The steel bars are evenly distributed throughout the beams. Three different definitions of ductility (strain, curvature and displacement) were obtained and proposed. This paper also systematically states the structural reliability analysis method for determining the amount of steel reinforcement in the completed beam. Derive the expected capacity equation in the yield and limit states. An important part of this paper is the quantification of the undetermined design capabilities of concrete masonry beams with different limit states resulting from changes in design variables. A Monte Carlo analysis was carried out to combine the material properties, structural engineering equations, and the uncertainty of construction quality control.