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结合哈尔滨市地铁1号线龙江街站深基坑工程的特点,详细介绍了在冻土和既有人防隧道段中实施深基坑的设计思路和实践经验,并分析了冻胀力对围护桩的影响。对在冻土地区进行基坑围护设计和施工,以及对基坑内既有构筑物处理方面的设计实践进行了总结。
Combined with the characteristics of deep foundation pit project of Longjiang Street Station of Harbin Metro Line 1, the design ideas and practical experiences of deep foundation pit construction in frozen soil and existing civil air defense tunnel sections are introduced in detail. Impact of pile maintenance. This paper summarizes the design and construction of foundation pit enclosure in permafrost regions and the design practice of existing structures in the foundation pit.