The application of the percussion impact echo method in determining the depth of bridge Caisson foundations
碩士 === 清雲科技大學 === 空間資訊與防災研究所 === 99 === Taiwan has numerous aging and old bridges. Since the basic completion information is not easily stored, difficulties in follow-up maintenance are caused. This study aims to investigate the method of percussion echo (impact-echo). The feasibility of determining...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2011
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| Online Access: | http://ndltd.ncl.edu.tw/handle/75737534519134494681 |
| Summary: | 碩士 === 清雲科技大學 === 空間資訊與防災研究所 === 99 === Taiwan has numerous aging and old bridges. Since the basic completion information is not easily stored, difficulties in follow-up maintenance are caused. This study aims to investigate the method of percussion echo (impact-echo). The feasibility of determining the caisson foundation depth using this method was studied. This research focused on the bridges of the san-her bridge, (Miao-li county) and the Tai-ya bridge (Yi-lan county). Using the existing design data and other methods such as Ultra-seismic (US) Method and the Geo-electric Resistivity (GR) Method, the results were compared. The results indicate that the percussion echo (impact-echo) method is sufficiently suitable for basic testing of exposed foundation depth testing. The accuracy in using this method is sufficient in the initial stages in ensuring safety Assessment.
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