锚杆无损伤检测问题的理论研究
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摘要
锚杆无损伤检测的基本原理是采用动力瞬态激振使锚杆产生弹性振动,通过测定锚杆的振动响应来评估锚杆质量。应用弹性动力学理论,建立了锚杆无损伤检测的波动方程及其定解条件,采用分离变量法求得了波动方程的理论解答。通过将截面位移对时间和空间变量求导,解得了质点振动的速度、加速度、应变和应力,并对公式中参数的选取进行了讨论,可为进一步研究锚杆无损伤检测问题提供理论参考。
The basic principle of nondestructive testing of anchor bolt is to use dynamic transient excitation causing anchor bolt produce elastic vibration so as to evaluate the quality through measuring vibration response of anchor bolt.Based on the theory of elastic-dynamics,the wave equation and its solvability condition of nondestructive testing of anchor bolt are established.And the theoretical solution is got by use of variable separation approach.The velocity,acceleration,strain and stress of particle vibration are obtained through differentiation of section displacement to time and spaces.And the parameters chosen are also discussed in this paper.All of this can offer some theoretical reference for further research on nondestructive testing of anchor bolt.
The basic principle of nondestructive testing of anchor bolt is to use dynamic transient excitation causing anchor bolt produce elastic vibration so as to evaluate the quality through measuring vibration response of anchor bolt.Based on the theory of elastic-dynamics,the wave equation and its solvability condition of nondestructive testing of anchor bolt are established.And the theoretical solution is got by use of variable separation approach.The velocity,acceleration,strain and stress of particle vibration are obtained through differentiation of section displacement to time and spaces.And the parameters chosen are also discussed in this paper.All of this can offer some theoretical reference for further research on nondestructive testing of anchor bolt.
引文
[1]汪明武,王鹤龄.锚固质量的无损检测技术[J].岩石力学与工程学报,2002,21(1):126-129.
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[3]赖云惠.对锚杆施工质量无损检测技术探讨[J].路基工程,2009(3):135-136.
[4]杨永波,等.锚杆极限抗拔力的灰色预测法[J].路基工程,2007(5):7-9.
[5]王靖涛.桩基应力波检测理论及工程应用[M].北京:地震出版社,1999.
[6]程良奎,范景伦,韩军,许建平.岩土锚固[M].北京:中国建筑工业出版社,2003.
[7]许明,张永兴.锚杆低应变动测的数值研究[J].岩石力学与工程学报,2003,22(9):1538-1541.
[8]刘元明.数学物理方程与特殊函数[M].北京:高等教育出版社,2005,36-48.
[2]许明,张永兴,阴可.锚杆极限承载力的人工神经网络预测[J].岩石力学与工程学报,2002,21(5):755-758.
[3]赖云惠.对锚杆施工质量无损检测技术探讨[J].路基工程,2009(3):135-136.
[4]杨永波,等.锚杆极限抗拔力的灰色预测法[J].路基工程,2007(5):7-9.
[5]王靖涛.桩基应力波检测理论及工程应用[M].北京:地震出版社,1999.
[6]程良奎,范景伦,韩军,许建平.岩土锚固[M].北京:中国建筑工业出版社,2003.
[7]许明,张永兴.锚杆低应变动测的数值研究[J].岩石力学与工程学报,2003,22(9):1538-1541.
[8]刘元明.数学物理方程与特殊函数[M].北京:高等教育出版社,2005,36-48.
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