Erosion Control of Scour during Construction. Report 1. Present Design and Construction Practice.
Abstract
It is frequently necessary to construct large engineering works of improvement in the surf and nearshore zone to protect harbor entrances, recreational beaches, and navigation channels. Shallow-water surface-gravity waves breaking on the structure during construction will cause bottom material to be suspended and transported from the region by longshore or other currents that may exist. This removal of material is often not compensated by an influx of additional material, and the result is a scour hole, or erosion, which usually develops along the toe of the structure. In order to ensure structural stability and functional adequacy of the works of improvement, any scour area must be filled with nonerosive material (sufficiently stable to withstand the environmental forces to which it will be subjected). This may result in additional quantities of material being required during construction which can potentially lead to substantial cost overruns. The objective of this study is to develop techniques to minimize and control scour during nearshore construction, and to predict the probable magnitude of scour that may result as a function of the wave climate.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1980
- Accession Number
- ADA082636
Entities
People
- Lyndell Z. Hales