| Model Tests of Pile Defect Detection |
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| 作者姓名： | Li Guocheng Wang Jingtao School of Civil Engineering Huazhong University of Science and Technology Wuhan |
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| 作者单位： | Li Guocheng Wang Jingtao School of Civil Engineering，Huazhong University of Science and Technology，Wuhan 430074 |
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| 摘 要： | INTRODUCTIONWhen the soil beneath a footing or raft is too weak or toocompressible t() provide adequate support, the loads are trans-ferred to more suitable soil layers at a greater depth by meansof piles. With the continuous development of the construction,the pile, one of the most important foundation styles, is widelyapplied. For various reasons, defects of different types anddamages of different degrees easiIy occur during the process ofconst ruct 1on.In general, the defects in piles …
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Model Tests of Pile Defect Detection |
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| Li Guocheng Wang Jingtao School of Civil Engineering,Huazhong University of Science and Technology,Wuhan .Model Tests of Pile Defect Detection[J].Journal of China University of Geosciences,2001,12(4). |
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| Authors: | Li Guocheng WANG Jingtao |
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| Abstract: | The pile, as an important foundation style, is being used in engineering practice. Defects of different types and damages of different degrees easily occur during the process of pile construction. So,dietecting defects of the pile is very important. As so far, there are some difficult problems in pile defect detection. Based on stress wave theory, some of these typical difficult problems were studied through model tests. The analyses of the test results are carried out and some significant results of the low-strain method are obtained, when a pile has a gradually-decreasing crosssection part, the amplitude of the reflective signal originating from the defect is dependent on the decreasing value of the rate of crosssection β. No apparent signal reflected from the necking appeares on the velocity response curve when the value of β is less than about 3.5 %. |
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| Keywords: | model tests pile defect detection stress wave responses |
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