以離心模型的震動台試驗探討沉箱碼頭的側向擴展

Lateral Spreading Triggered by Quay Wall Movements Using Centrifuge Shaking Table Tests

李崇正(Chung-Jung Lee) ； 吳秉儒(Bin-Ru Wu) ； 熊大綱(Ta-Kang Hsiung)

《地工技術》 82期 (2000/12) Pp. 5-20

https://doi.org/10.30140/SG.200012.0001

摘要

本文主要探討液化引致沉箱碼頭移出導致的地盤側向擴展現象。首先歸納阪神淡路大震中港島及六角島與集集大震後台中港的破壞災象及型態。然後利用裝置於離心機掛台上的震動台，進行沉箱碼頭的離心模型震動試驗，將模型試驗所呈現的破壞型態與現場的破壞案例比較，並討論碼頭側滑引起的地盤側向擴展的破壞機制。

關鍵字

側向擴展 ； 液化 ； 沉箱碼頭 ； 離心模型的震動台試驗

並列摘要

The phenomena of liquefaction-induced lateral spreading of saturated cohesionless soils triggered by movements of caisson type quay walls are studied. First of all, the patterns of ground failure at the Taichung Habor in Taiwan, and Port Island and Rokko Island in Japan were investigated in detail. Then, a series of centrifuge shaking table tests were carried out to study both the deformation characteristics of backfills and the response of caisson type quay walls during liquefaction induced by strong earthquakes. A comparison of test results and observed field ground failure is made and the possible mechanisms of lateral spreading triggered by quay wall movements are discussed.

並列關鍵字

lateral spreading ； liquefaction ； caisson type quay wall ； centrifuge shaking table tests