Construction Monitoring and Data Analysis of Deep Foundation Pit Supporting Structure in Soft Soil Area
In order to improve the construction quality of deep foundation pit supporting structure in weak and water-rich strata,this paper takes a foundation pit project as an example,analyzes the design and construction technology of foundation pit supporting structure under com-plex conditions in detail,and monitors the effect of post-construction supporting structure.The results show that the supporting structure of the foundation pit consists of bored pile,one reinforced concrete support and two steel pipe support,and the isolation pile and water stop curtain are set around the pile.After the construction,the settlement of pile top was 36.2,19.3 and 2.9 mm,respectively.The settlement of pile top is 29.8,19.6 and 15.4 mm respectively.The axial forces of reinforced concrete support are 2 000,2 200 and 2 300 kN respectively,and all the monitoring values do not exceed the design warning value,which meets the target requirements of the design scheme,and the construction effect is good,which confirms that the construction scheme adopted is reasonable,safe and reliable.
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