摘要
隐蔽后的桩基础无法采用传统方法进行检测,平行地震波法通过上部结构激振、孔中接收地震波信号、标记时深曲线各道的初至时间、拟合各直线段的斜率波速,根据斜率变化位置及各采样道的波幅变化情况,得到桩底位置及桩身完整性情况。平行地震波法是一种无损检测方法,不伤及承台及桩身。文中通过工程实例,验证了该方法是一种针对隐蔽后桩基础检测的有效方法。
The concealed pile foundation cannot be detected by traditional methods.The parallel seismic method trigger the superstructure with a handhold hammer,receives the seismic signal in the hole,marks the first arrival time of each track of the time depth curve,fits the slope wave velocity of each straight line section,and obtains the pile bottom position and pile body integrity according to the break point and the wave amplitude change of each sampling track.Parallel seismic method is a non-destructive testing method,which does not damage the bearing platform and pile shaft.This paper verifies that this method is an effective method for the detection of hidden pile foundation through engineering examples.
作者
郑思伟
Zheng Siwei(Fujian Academy of Building Research Co.Ltd.,Fuzhou,Fujian 350108;Fujian Province Key Laboratory of Green Building Technology,Fuzhou,Fujian 350108)
出处
《江西建材》
2022年第12期40-42,共3页
Jiangxi Building Materials
关键词
既有建筑
平行地震波法
隐蔽桩基础
无损检测
Existing buildings
Parallel seismic method
Concealed pile foundation
Non-destructive testing
