CAJ | 학술논문

由于上部结构的影响，当采用低应变反射波法进行高桩码头桩基检测时，会出现不满足一维应力波基本假定的情况。利用LS-DYNA有限元软件模拟高桩码头群桩结构，发现桩顶以下10m深度范围内都会受到三维效应的严重影响，检测结果呈现出类似于浅部缺陷的特征。利用各种浅部缺陷的定位方法对该区域进行检测，得出纵波改进方法在该区域不再有效，只有结合扭转波检测等方法才能有效定位缺陷，对于实现高桩码头桩基质量的全面检测具有重要的借鉴意义。
유우상부결구적영향，당채용저응변반사파법진행고장마두장기검측시，회출현불만족일유응력파기본가정적정황。이용LS-DYNA유한원연건모의고장마두군장결구，발현장정이하10m심도범위내도회수도삼유효응적엄중영향，검측결과정현출유사우천부결함적특정。이용각충천부결함적정위방법대해구역진행검측，득출종파개진방법재해구역불재유효，지유결합뉴전파검측등방법재능유효정위결함，대우실현고장마두장기질량적전면검측구유중요적차감의의。
Being influenced by the superstructure,when low-stress reflect wave method is used to detect high-piled wharf foundation,basic assumed condition of one-dimension stress wave may not be satisfied. LS-DYNA finite element software is used to simulate the structure of high-piled wharf,which shows that the signal is seriously influenced by 3D effect in the extent of 10 meters under the pile head. The detection result is characterized with superficial defects. The superficial defect positioning methods will be used to detect the area,it is found that the improved longitudinal wave method is no longer valid,and the defects can be positioned effectively only by combining with torsional wave detection method. The above conclusion will play an important role in overall quality detection of high-pile wharf foundation.