后加混凝土-砌体组合结构简化计算模型研究

后加混凝土构件的加固方法是在原有砌体结构外部新增钢筋混凝土构件，形成一种新型的组合结构．本文提出了考虑连接节点的后加混凝土构件-砌体组合结构的简化理论计算模型，并推导了不同构件的等效计算公式．考虑均布分布荷载和倒三角分布荷载作用，对组合结构的变形、剪力分配进行计算分析．计算结果从定性方面验证了本文提出的简化计算模型的可行性和有效性．同时针对某实际工程进行理论计算，与三维空间模型在弹性阶段的计算结果进行对比，从定量方面验证了本文提出的简化计算模型的准确性．

Study on the Simplified Calculation Model of Post-Installed Reinforced Concrete-Masonry Composite Structure

Retrofitting existing masonry buildings by installing the reinforced concrete members around the masonry structure is a new retrofit method. The simplified calculation model of composite structure considering connection joint is presented in this paper and the equivalent calculation formulas for different configurations are derived. The deformation and the shear stress distribution of the composited structure are calculated and analyzed under the uniform load and the inverted triangular load. The calculation results provide a qualitative verification of the feasibility and effectiveness of the simplified calculation model. Moreover, the method is applied to analyze the structure mechanical behavior in an actual project. The calculation results are compared with the results of three-dimensional model in elastic stage. The comparison provides a quantitative verification of the accuracy of the simplified calculation model presented in this paper.