摘要
运用LS-DYNA显式分析方法对码头桩基的纵波检测和扭转波检测分别进行了数值模拟,然后通过对比纵波检测和扭转波检测的波形、波速、衰减幅度、加载方式、缺陷敏感度和检测精确度,指出了两者在码头桩基检测中的优缺点,进而提出将两者结合起来进行码头桩基的完整性无损检测的建议。最后将数值模拟曲线与实测曲线进行对比,发现两者一致性较好,表明数值模拟是有效的。在此基础上得出的结论对于码头桩基完整性无损检测具有较重要的理论意义,对于探索新的码头桩基无损检测方法有一定的参考价值。
The longitudinal wave test and torsional wave test of wharf piles are simulated by LS-DYNA explicit analysis method.The advantages and disadvantages are pointed out through the comparison of the waveform,wave velocity,attenuation rate,loading way,defect sensitivity and test accuracy of longitudinal wave test and torsional wave test of wharf piles.Moreover,it puts forward the synthesis analysis of longitudinal wave and torsional wave of wharf piles nondestructive test.Finally,it＇s shown that the simulated curves are in good agreement with those obtained from field measurements.Therefore,the numerical simulations are effective.The conclusions have certain theoretical significance and guide significance to explore new method of the non-destruction test of wharf piles
出处
《工程勘察》
CSCD
北大核心
2010年第9期90-94,共5页
Geotechnical Investigation & Surveying
基金
国家自然科学基金项目(No.50979069)
关键词
码头桩基
无损检测
纵波
扭转波
数值模拟
LS-DYNA
wharf piles
nondestructive test
longitudinal wave
torsional wave
numerical simulation
LS-DYNA
