基坑和海堤相结合的新型围护结构设计研究

依托某填海场地基坑工程，分析预留基坑的难点，提出了基坑和海堤相结合的新型围护形式。通过工程分析、有限元计算，对预留基坑的结构形式、受力、变形特点及施工时序进行了分析。结果表明:复合式海堤、预留基坑方案合理、可行；节约了工期和造价，且能更有效地利用地下空间。

On a New Type of Enclosure Structure Design Combining Foundation Pit with Seawall

Based on the foundation pit project of a sea reclamation site, this paper analyzes the difficulties of reserving the foundation pit and puts forward a new type of retaining form combining foundation pit and sea wall. Through engineering analysis and finite element calculation, the structural form, stress, deformation characteristics and construction time sequence of the reserved foundation pit have been analyzed. The results show that the scheme of compound sea wall and reserved foundation pit is reasonable and feasible. The construction period and cost are saved, and the underground space can be used more effectively.