中文摘要：

针对国内对普通轻骨料混凝土和高强轻骨料混凝土的单轴力学性能指标采用分区描述,导致不同计算公式在分区边界处所得的计算结果误差较大,且不便应用于轻骨料混凝土结构计算与分析等问题,通过对国内大量的普通轻骨料混凝土和高强轻骨料混凝土单轴受力性能试验资料进行统一分析,发现轻骨料混凝土强度等级在LC10～LC80时其各力学性能指标均具有连续变化规律。基于统计分析方法,对不同强度等级轻骨料混凝土的各种力学指标进行统一分析,提出适用于各种强度等级轻骨料混凝土的尺寸换算系数、轴心抗压强度、轴心抗拉强度、劈拉强度、弹性模量、轴心受压峰值应变和轴心受拉峰值应变等统一计算公式,建立不同强度等级轻骨料混凝土轴心受压、受拉应力-应变全曲线方程,计算结果与实测结果较吻合。

英文摘要：

Based on the fact that researchers at home adopt divisional method to describe the mechanical indexes of normal lightweight aggregate concrete and high-strength lightweight aggregate concrete,which leads to calculated result error for different calculation formulas at divisional borderline,even cannot be applied to analyses and design of the lightweight aggregate concrete structures,through analyzing test results of mechanical properties of lightweight aggregate concrete under uniaxial loading in China,the continuities of mechanical indexes and stress-strain curves of lightweight aggregate concrete whose strength grade ranges from LC10 to LC80 were found.Based on the method of statistical analysis,numbers of test results of uniaxial mechanical properties of lightweight aggregate concrete with different strength grades were analyzed.The unified calculation formulas which can be applied in various strengths of lightweight aggregate concrete for size coefficient,axial compressive strength,axial tensile strength,split tensile strength,elastic modulus,strains at peak uniaxial compression and tension,stress-strain curves of axial compression and tensile of lightweight aggregate concrete were proposed.Calculated results are in agreement with the experimental results.