Research on Construction Technology of Complex Deep Foundation Pit Support
In the construction of modern medical building,the complex surrounding environment of foundation pit is the key and difficult point of the whole project construction,especially the reconstruction and expansion project.Because of its"zero distance"from the old hospital area,it is particularly important to do a good job in deep foundation pit support.The project adopts a safe and reasonable combined support system of spray anchor combined with rotary drilling cast-in-place pile + triaxial mixing pile water-stop curtain + internal support beam,which effectively controls the deformation and displacement of the retaining structure during the deep foundation pit excavation,reduces the impact on surrounding buildings and underground pipelines,realizes the safety and stability of deep foundation pit in the construction process,and achieves great economic benefits.It has certain reference value for similar deep foundation pit engineering construction.
deep foundation pitfoundation pit supportwater-stop curtaingroundwater
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