叠箱式模块化建筑内力计算方法研究

Research on internal force calculation method of stacked box modular building

叠箱式模块化建筑结构内力计算方法是实际工程初步设计以及校核的重要依据。文章针对单个模块单元采用平衡条件剖析的方法建立模块单元力学模型,推导现阶段多层叠箱式模块化建筑结构中模块单元的固端弯矩、转动刚度、传递系数、分配系数及抗侧刚度,通过有限元数值分析法分析了算例,并对比了计算结果。结果表明:提出了叠箱式模块化建筑结构内力简化计算方法及侧向位移计算方法,修正了模块单元柱抗侧刚度,确定了叠箱式模块化建筑的反弯点高度。简化的结构计算方法与有限元数值计算方法吻合较好。

The calculation method of the internal force of the stacked box modular building structure is an important basis for the preliminary design and check of the actual project.The mechanical calculation model of single module element is established by equilibrium condition analysis method.The theoretical derivation and calculation of the bending moment,rotational stiffness,transfer coefficient,distribution coefficient and lateral stiffness of module elements in the stacked box modular building structure are deduced.The finite element simulation analysis is carried out for the calculation example through the finite element numerical analysis method,and the calculation results are compared.The research results show that the simplified calculation method of internal force and the calculation method of lateral displacement are put forward,and the lateral stiffness of module element column is modified to determine the height of inflection point of the modular building.The simplified structure calculation method is in good agreement with the finite element numerical calculation method.