Abstract: with the continuous development and utilization of urban space, the construction space in the construction industry is becoming smaller and smaller. In order to ensure the smooth implementation of foundation pit engineering, there are many kinds of support forms in the same foundation pit, such as: pile anchor support system, underground continuous beam support, diagonal support system, fabricated steel internal support support system, pipe support, etc. Through the comparative analysis of different support forms, the advantages and disadvantages are summarized, which can provide reference for similar projects in the future.<br>Key words: the same foundation pit; multiple supporting forms; comparative analysis; reference.<br>
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