Measured Fill Performance at Berths 212-215 in the Port of Los Angelesby Allen M. Yourman, Jr., Harding Lawson Associates, Santa Ana, United States,
Matthew F. Hunter, Harding Lawson Associates, Santa Ana, United States,
Gerald M. Diaz, Harding Lawson Associates, Santa Ana, United States,
Abstract: This paper summarizes the performance of an instrumentation fill constructed in open water in the Port of Los Angeles (Port). A new container-handling facility was constructed that consisted of a 1,950-foot (595-meter) long-pile-supported wharf and 100-acre (404.6 hectares) backland area. The bottom subsurface conditions consisted of natural alluvial soils varying from soft clays to dense sands. To construct the wharf and backland area, a rock dike was placed along the pier head line. The backland was created by filling existing slips and a small basin behind the rock dike using both marine- and land-based operations. To meet the tenant's schedule, wick drains were installed in the backland fill area to speed the settlement of the underlying natural silts and clays. An instrumentation program was designed to monitor the settlement of the fill and rock dike, to measure excess pore water pressures that might affect the stability of the rock dike, and to measure the lateral deflection of the rock dike. Instrumentation consisted of surface survey monuments, in-situ remote readout devices, and transit surveys of wharf piles. In one area of the backland fill, cone penetration tests (CPTs) were performed to provide an indication of the density of the fill material.
Subject Headings: Fills | Ports and harbors | Levees and dikes | Quality control | Berths | Penetration tests | Rocks | Soil settlement | Clays | Instrumentation | North America | California | Los Angeles | United States
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