求翻译：水中墩桩基采用钻孔灌注桩。根据地段水深较浅、桩长较短且入基岩比例大等工程特点，为避免或减少水位变化对基础施工影响，均通过从两岸修筑便道和墩位围堰筑岛并预留湘江航道的方法进行施工；航道缺口采用贝雷组装活动便桥边通，避免采用搭设固定工作平台的施工方法；钻孔施工工艺以冲击成孔为主。是什么意思？

Bored pile pier in water use. According to lots shallow, short and long pile into the bedrock and large proportion of the engineering characteristics of the water level to avoid or reduce the impact of change on the basis of construction, the two sides are built from the sidewalk and through the pie

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Underwater pile foundation with bored piles. Under lots depth more shallow, and pile long more short and into bedrock proportion large, engineering features, for avoid or reduced water level changes on Foundation construction effect, are through from Strait built shortcut and Pier bit cofferdam buil

Pier-pile foundation with bored piles in the water. According to lots depth more shallow, and pile long more short and into bedrock ratio large, engineering features, for avoid or reduced water level changes on Foundation construction effect, are by from Strait built pavement and Pier bit cofferdam