碩士 / 國立成功大學 / 土木工程學系 / 102 / Taiwan is an island in seismic zone. The seismic resistance of harbor facilities is an important subject for society. Caisson type quay wall is one of the popular port designs for the long durability and high seismic resistance. This research investigates the dynamic reactions of caisson type quay walls by large-scale shaking table test and numerical analysis. The shaking table test of caisson model used clean sand for seabed and backfill and gravel on the back and bottom of caissons to study two issues, which are (1) the effect of the gravel at the bottom of caisson; and (2) the failure mode, generation of excess pore pressure, couple response of shear strain and excess pore pressure, and induced earth pressures in non-liquefied and liquefied soil. Numerical analyses, which simulate the models of caisson by FLAC, were conducted and compared with shaking table test data. The results indicate: (1) The gravel at the bottom increases the resistance against sliding during shaking and reduces subsidence of caisson and distribution of liquefied zone in the backfill; (2) The gravel foundation reduce the displacement of caisson and subsequently reduce the subsidence of backfill; (3) The liquefaction occurs from soil surface, and extending the depth with the increasing acceleration and duration of shacking. The excess pore pressure at the bottom of caisson is the lower than other locations because of the weight of caisson.
| Identifer | oai:union.ndltd.org:TW/102NCKU5015126 |
| Date | January 2014 |
| Creators | You-YanLu, 盧又彥 |
| Contributors | Wen-Jong Chang, 張文忠 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 114 |
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