(苏州科技学院 215011)
［提要］在试验的基础上提出了集中荷载作用下轻骨料混凝土梁受剪承载力计算公式的模型。应用《建筑结构设计统一标准》(GBJ68—84)提供的结构可靠度分析的一次二阶矩法，对公式模型进行了可靠度分析，并按照《建筑结构可靠度设计统一标准》(GB50068—2001)的要求，确定了公式中的待定参数ω的值。建议的公式和可靠度分析结果可为轻骨料混凝土梁受剪承载力的设计计算提供依据。
［关键词］ 轻骨料混凝土梁 受剪承载力 计算公式 可靠度
Calculation Formula and Its Reliability Analysis of Shear Capacity of Lightweight Aggregate Concrete Beams/Shao Yongjian (Suzhou Institute of Science and Technology，Suzhou 215011，China)
Abstract:Based on the experimental results,the calculation formula model of shear capacity of lightweight aggregate concrete beams is put forward.The second moment of first order method recommended in the National Design Standard of Building Structures(GBJ68—84) is applied to analyze the reliability of the formula model.According to the demand of Unified Standard for Reliability Design of Building Structures(GB50068—2001),the value of parameter ω is fixed.The suggested formula and reliability can be used to design and calculate the shear capacity of lightweight aggregate concrete beams.
Keywords:lightweight aggregate concrete beams; shear capacity; calculation formula; reliability