洪水作用下CFRP加固的村镇砖混建筑有限元分析

在中国,洪水是发生频率高、造成损失大的自然灾害之一,每年都有很多村镇建筑在洪水中严重损坏甚至倒塌,造成巨大生命和财产损失,因此,对村镇建筑抗洪性能进行深入系统的研究具有重要意义。推导洪水对村镇建筑作用的动水压力的计算公式,研究CFRP加固村镇砖混建筑的抗洪性能。通过理论推导得到动水压力的计算公式,利用试验数据进行修正。利用有限元分析软件ANSYS,对CFRP加固的建筑进行分析,并与加固前的分析结果进行对比。计算了洪水作用下村镇建筑中的应力及位移。计算结果表明,文中得到的动水压力公式和数值计算模型具有较高的精度,对深入研究村镇建筑抗洪性能和工程应用具有积极意义。

Finite Element Analysis for Rural Brick Buildings Strengthened with CFRP under Flood Action

In China,flood is considered to be one of the costliest and most common natural disasters,which could cause the life and property losses partly due to the heavy damage and collapse of rural buildings.Hence,it is very important to conduct the comprehensive research on the flood behavior of rural buildings.Here,the formula of hydrodynamic load on rural buildings by flood moving is derived,and the flood behavior of rural brick buildings is studied.The formula of hydrodynamic load is derived according to the theory analysis,and then is corrected based on test results.Furthermore,the finite element analyses of the rural brick buildings strengthened with and without CFRP under flood action are conducted by using ANSYS,the analysis results are compared and checked.At the same time,the stress and displacement of the rural brick buildings are calculated.The results show that the formula of hydrodynamic load and the numerical model of rural buildings are of high accuracy,and of useful references for further study and application in similar projects.