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剪力键式钢空腹梁是钢空腹夹层板的基本力学单元,为研究该结构空腹部分静力计算方法,根据剪力键式钢空腹梁传力机理,基于空腹桁架理论提出了一种适合钢空腹梁空腹部分内力的计算方法。该方法基于刚度等代交叉梁系的方法计算,考虑了空腹部分钢肋的受力特征。并将公式计算结果与有限元模型计算结果进行了对比。结果表明:剪力键式钢空腹梁的受力具有空腹结构的典型特点,基于修正的空腹桁架理论计算方法能够较为准确地计算出钢空腹梁关键截面的应力分布状况,为该结构合理设计计算提供了依据。
In order to study the static calculation method of the fasting part of the structure, a shear-key steel web girder is a basic mechanical unit of the steel web sandwich panel. According to the force transmission mechanism of the shear beam steel web girder, Calculation method of internal force in fasting part. The method is based on the calculation of the equivalent cross-beam system on the stiffness, taking into account the force characteristics of the steel ribs in the fasting part. The calculation results of the formula are compared with those of the finite element model. The results show that the stress of the shear bond steel beam is characterized by fasting structure. Based on the modified theory of fasting truss, the stress distribution of the key section of the beam can be calculated accurately. Provided the basis.