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灌注桩超声波衰减成像技术研究
引用本文:董清华,袁国清,彭土有,林逸标.灌注桩超声波衰减成像技术研究[J].施工技术,2011,40(7):54-56.
作者姓名:董清华  袁国清  彭土有  林逸标
作者单位:1. 五邑大学土木建筑学院,广东,江门,529020
2. 成都理工大学信息工程学院,四川,成都,610059
3. 江门市交通工程质量监督站,广东,江门,529000
基金项目:广东省自然科学基金资助项目
摘    要:介绍了Landweber迭代算法衰减成像原理.采用加速的Landweber迭代算法对一带有空洞缺陷体的混凝土灌注桩模型进行了超声波衰减图像重建,所得图像清晰显示出空洞的位置与形状,并与速度重建图像相比较,两者吻合较好.对某桥梁工程灌注桩进行了衰减图像莺建与速度图像重建,两者均清楚显示出缺陷体的部位,经钻孔抽芯验证,其结...

关 键 词:Landweber  衰减成像  超声波  灌注桩

Research on Technology of Ultrasonic Attenuation Tomography for Cast-in-place Piles
Dong Qinghua,Yuan Guoqing,Peng Tuyou,Lin Yibiao.Research on Technology of Ultrasonic Attenuation Tomography for Cast-in-place Piles[J].Construction Technology,2011,40(7):54-56.
Authors:Dong Qinghua  Yuan Guoqing  Peng Tuyou  Lin Yibiao
Affiliation:Dong Qinghua1,Yuan Guoqing1,Peng Tuyou2,Lin Yibiao3(1.School of Civil Engineering and Architecture,Wuyi University,Jiangmen,Guangdong 529020,China,2.College of Information Engineering,Chengdu University of Technology,Chengdu,Sichuan 610059,3.Jiangmen Traffic Engineering Quality Administer Station,Guangdong 529000,China)
Abstract:Principle of Landweber iterative algorithm attenuation tomography is introduced.Accelerated Landweber iteration algorithm is used to calculate ultrasonic attenuation tomography for a cast-in-place pile model with a hole defect.The result clearly shows the position and shape of the hole,and agrees well with the velocity image.Furthermore,the algorithm is used on the attenuation image reconstruction for a cast-in-place pile of a bridge engineering.The reconstruction image and velocity image both clearly show ...
Keywords:Landweber
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