（湖南工业大学土木工程学院和科技学院， 株洲 412007）

［摘要］基于采用高性能水泥复合砂浆钢筋网薄层（HPFL）加固的6根足尺轴心受压RC柱力学性能试验研究结果，进行有限元数值模拟分析，研究加固层中钢筋的类型、直径和网格尺寸几个变化参数对柱加固效果的影响。模拟分析中对单元的选取、材料本构关系、数值模拟相关参数的设置、构件有限元模型的建立等进行了研究，并对数值模拟结果与试验结果进行了比较和分析，二者符合程度较高。利用所建模型对一工程实例进行了模拟，模拟结果与采用相应规程理论公式计算的结果有很好的一致性，验证了所建立的有限元模型的正确性和合理性。试验研究和数值模拟结果均表明，加固后的柱子承载力和刚度得到了相应提高、延性得到了相应改善，进一步证实HPFL加固法是一种加固效果显著、加固后构件工作性能优良、施工方便、投资节约的加固方法。

［关键词］HPFL; 加固; 轴心受压柱; 有限元模拟; 承载力; 刚度

中图分类号：TU375.3      文献标识码：A      文章编号：1002-848X(2014)17-0050-06

Numerical simulation analysis of the axially compressed RC column strengthened with HPFL

Jiang Longmin, He Aibo, Zhou Lumeng

 (School of Civil Engineering and School of Technology, Hunan University of Technology, Zhuzhou 412007, China)

Abstract:Based on experimental research results of mechanical properties of six full-scale axially compressed reinforced concrete columns strengthened with high performance ferrocement laminate（HPFL）, finite element numerical simulation analyses were carried out to study influence of variable parameters of rebar type, rebar diameter and grid size in the strengthened layer on strengthening effect of the column. The simulation analyses researched the selection of units, the material constitutive relation, the relevant parameter setting of numerical simulation and establishment of component finite element model. The numerical simulation analysis results and experimental results agree with each other well based on the comparison and analysis. A project example was simulated using the built model and the simulating results are in good accordance with calculated results based on theoretical formula of relevant codes, which verifies correctness and rationality of the established finite element model. The experimental study and numerical simulation analyses show that the bearing capacity and stiffness of strengthened column are developed as well as the ductility. It is further proved that the strengthening method of HPFL has notable strengthening effect, construction convenience and less cost. Moreover, the working behavior of the strengthened column is excellent.

Keywords:high performance ferrocement laminate; strengthening; axially compressed column; finite element simulation; bearing capacity; stiffness

*国家自然科学基金项目(51058001), 湖南省大学生研究性学习和创新性实验计划（湘教通［2013］191号）。

作者简介：蒋隆敏,博士,教授,Email:527943658@qq.com。

参考文献

［1］汤繁华, 蒋隆敏, 曹晖, 等.HPFL加固RC结构研究综述［J］.湖南工业大学学报, 2011, 25（1）:20-25.

［2］尚守平, 高法启.HPFL加固RC梁抗弯疲劳性能试验研究［J］.铁道科学与工程学报, 2008, 5(3):18-22.

［3］许宁.钢筋网水泥复合砂浆加固混凝土轴心受压构件性能研究［D］.长沙:湖南大学, 2006.

［4］卜良桃, 王月红, 尚守平.复合砂浆钢筋网加固抗弯RC梁的非线性分析［J］.工程力学, 2006, 23（9）:125-130.

［5］王新敏.ANSYS工程结构数值分析［M］.北京:人民交通出版社,2007.

［6］沈蒲生.混凝土结构设计原理［M］.北京:高等教育出版社,2007.