桩基码头与岸坡的相互作用

在高桩码头中,为了满足停靠船舶的水深要求并与陆上交通相衔接,码头前沿通常需要挖深,而其后方却往往必须填高。这样的前挖后填必然会破坏土体原有的平衡状态,导致岸坡变形,并对码头桩基产生影响。这是一个典型的“被动桩”与岸坡的相互作用问题,国内外学者还很少对此进行过研究。本文简要地介绍了利用现场观测、模型试验和计算分析等,对桩基码头与岸坡相互作用进行研究所得到的一些初步成果。

Interaction between Pile-Supported Pier and Bank Slope

Generally the toe of the bank slope in front of the pile-supported pier has to be dredged to meet the requirement of the water depth for the berth of ships, and the top of the slope behind the pier must be backfilled and elevated to make connections with the land carriage. Then the natural state of equilibrium of the slope is destroyed, and some deformation and displacement are inevitably induced in the soil mass which will exert an undesirable influence on the pile foundation. This is a typical problem of the interaction between the so-called &;quot;passive pile&;quot; and soil mass, and has been scarcely studied in the literatures of geotechnical engineering. Field observation, model tests and numerical analysis in studying the interaction between pile-supported pier and bank slope are briefly described with some preliminary results presented.