求翻译：摘要：水下混凝土灌注桩技术现在已经被广泛的应用在桥梁的施工当中。桥梁下部结构经常采用单桩单柱的结构形式，由于桩数较少,受力集中,负荷较大，桩身一旦发生严重缺陷很难采取补救措施，所以对大口径桥桩的成孔质量和灌注质量要求十分严格。是什么意思？

Abstract: the underwater concrete piles technology now is widely used in the bridge under construction. Bridge substructure is frequently used single pile single-column structure, the relatively small number of piles, the force centralized load, pile the event of serious flaws it is difficult to tak

Summary: The concrete water technology is now bored piles have been widely applied in construction of the bridge. Structure of the Department under the bridge with a single pile often single-pole structure of the form, as a result of fewer piles, to focus on, the load is large and pile in the event

Abstract: Submarine concrete filling pile technology now already by widespread application middle bridge construction.The bridge substructure uses Shan Zhuangdan frequently the column the structural style, because the pile number are few, the stress is centralized, the load is big, once the pile bod

Summary: the technology of underwater bored concrete pile and has now been widely used in the construction of the bridge. Bridge substructure frequently used single structure in the form of single pile, as few piles, stress concentration, loads a large, serious defects in pile as soon as it is diffi

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