强夯置换复合地基在填海场地中的应用
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（大连市建筑设计研究院有限公司，大连 116021）[摘要] 通过工程实例，介绍了在较厚回填土的填海场地中采用强夯置换进行地基处理以提高地基承载力及控制沉降的设计及施工方法。强夯置换后对置换墩体、墩间土及复合地基进行了静力载荷试验，并对置换墩体的密实程度及置换墩体的着底情况进行重型动力触探的检测，结果表明强夯置换后场地地基承载力与变形均满足规范要求。工程实例表明，在较厚回填土的填海场地采用此方法安全可靠、节约造价且缩短工期。[关键词] 强夯置换;填海场地;地基处理中图分类号： TU472 文献标识码：A 文章编号：1002-848X(2013)S1-0921-04Application of dynamic compaction replacement composite foundation in the reclamation siteWen Yuan,Zhang Ying(Abstract: The design and construction method of dynamic compaction replacement ground treatment were introduced to enhance the bearing capacity of foundation and control foundation settlement in thick backfill reclamation site by an engineering example. The static loading test were carried out to replacement piers, soil between the piers and the composite foundation by dynamic compaction replacement, and the compaction rate of replacement of piers processed by dynamic compaction replacement and the forward to the end of the replacement piers were detected by heavy dynamic penetration testing. The results show that the bearing capacity of the composite foundation acceptable and can meet the requirement of related codes. Moreover, the engineering example shows this method can shorten the construction period and is economic, convenient and safe.Keywords: dynamic compaction replacement; reclamation site; ground treatment
