The Chi-Chin coastal park, located near Kaohsiuug harbor, was built from 1993 to 1997 in southern area of Taiwan. Due to the heavy wave induced settlement inside the park from beach to Art Square during June 1997, the continued soil loss not only endangered the park area, but also resulted in some ground settlement around the area in front of the Office and Travel Center within the park zone. In this paper the failure mechanism will be discussed and analyzed using the model of fluidliquefaction. It is found that some area should be liquefied apparently under given parametric conditions. Furthermore, liquefaction resulting from wave loading leads to reduction of passive soil pressure and causes slope slide instability.
The Chi-Chin coastal park, located near Kaohsiung harbor in the Southern Taiwan and built since 1993, was proposed to be finished and be opened to public in December 1997. However, during June 1997 and after a strong typhoon, there exists severe loss of soils behind the installed PC soil-retaining wall and then pavement settlement near the soil-retaining wall occurs suddenly. The problem was temporally treated but loss of soils continued to occur. There are a lot of factors which might cause this phenomenon: long-term change of coastal beach, typhoon induced sea wave loads, inadequate choice of type and length of soil-retaining wall, lack of preventing treatment on soil embankment, irregular tidal forces, groundwater movement, seashore hydrological variation, etc. Among these factors the wave induced movement and separation of soil particles behind the soilretaining wall seems to be the most impoaa.nt one that cause the loss of soils. Although there were literatures in the past depicted that dynamic wave loading might lead to liquefaction failure caused by increase of pore water pressure
