岩石锚杆风机基础的混凝土应力监测及数值分析
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摘要
为了探究风力发电机新型岩石锚杆基础的受力特性,结合国电铁岭开发区风电场新建工程,通过在岩石锚杆风机基础上布置健康监测系统并结合自主研发的操作平台,以监测风机基础运行中的受力状态。同时利用ABAQUS有限元分析软件对岩石锚杆风机基础在不同荷载工况下的应力状态进行分析,通过将其与监测结果进行对比,可以有效地获取基础内部的受力状态。该工作为完善结构设计工作提供了重要的依据,对同类结构的设计计算有参考意义。
In order to explore mechanical characteristics of new type rock bolt foundation of wind turbine generator,a structural health monitoring(SHM)system was established on the rock bolt foundation of a wind turbine generator which was located in the new constructed wind power plant in Tieling development zone,to monitor the concrete stress state of the foundation during operation by using the developed computer platform.At the same time,the concrete stress states of the foundation under various loads were numerically simulated by using finite element method(FEM)and the ABAQUS software,and the results were compared with the SHM one.Both the numerical result and monitored one in-situ showed that the basic internal stress states of the foundation could be effectively obtained.The work provided references for improvement of the foundation structure design and the calculation of similar structures in the future.
In order to explore mechanical characteristics of new type rock bolt foundation of wind turbine generator,a structural health monitoring(SHM)system was established on the rock bolt foundation of a wind turbine generator which was located in the new constructed wind power plant in Tieling development zone,to monitor the concrete stress state of the foundation during operation by using the developed computer platform.At the same time,the concrete stress states of the foundation under various loads were numerically simulated by using finite element method(FEM)and the ABAQUS software,and the results were compared with the SHM one.Both the numerical result and monitored one in-situ showed that the basic internal stress states of the foundation could be effectively obtained.The work provided references for improvement of the foundation structure design and the calculation of similar structures in the future.
引文
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[2]李宏男,李东升.土木工程结构安全性评估、健康监测及诊断述评[J].地震工程与工程振动,2002,22(3):82-90.
[3]孙鸿敏,李宏男.土木工程结构健康监测研究进展[J].防灾减灾工程学报,2003,23(3):92-98.
[4]PINES D,AKTAN A E.Status of structural health monitor of long-span bridges in the United States[J].Progress Structure Engineeringand Materials,2002(4):372-380.
[5]SLOAN T D,THOMPSON A.Development of an automatic data col-lection system for a major box-girder bridge[J].Computers and Struc-tures,1991,41(6):1411-1416.
[6]KASHIMA S,YANAKA Y,MORI K.Monitoring the Akashi KaikyoBridge:first experiences[J].Structural Engineering International,2001,11(2):120-123.
[7]邱法维,杜文博,钱稼茹,等.虎门大桥应变监测数据处理系统设计[J].桥梁建设,2003(2):66-69.
[8]李惠,周文松,欧进萍,等.大型桥梁结构智能健康监测系统集成技术研究[J].土木工程学报,2006(2):46-52.
[9]段向胜,周锡元,常银昌,等.天津津塔施工时变过程应力监测及数值分析[J].建筑结构,2011,41(6):114-117.
[10]高东伟,李宏男,任亮,等.基于虚拟仪器技术的结构健康监测系统开发[J].系统仿真学报,2009,21(10):2889-2894.
[11]王民浩,陈观福.我国风力发电机组地基基础设计[J].水力发电,2008,34(11):88-91.
[12]何杰,陶铁铃,陈玉梅.新型梁板式风机基础数值模拟研究[J].人民长江,2011,42(3):43-45.
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