Soil-rock combined stratum deep foundation pit end-suspended pile supporting structure

Abstract

The invention relates to a soil-rock combined stratum deep foundation pit end-suspended pile supporting structure, and is suitable for the field of foundation pit engineering. The invention aims at providing the soil-rock combined stratum deep foundation pit end-suspended pile supporting structure which is simple in structure, convenient to construct, safe and reliable. According to the technicalsolution, the soil-rock combined stratum deep foundation pit end-suspended pile supporting structure is characterized in that the soil-rock combined stratum deep foundation pit end-suspended pile supporting structure is provided with a plurality of end-suspended piles serving as a foundation pit enclosure structure, reinforced concrete beams are arranged at the tops of the end-suspended piles, rock shoulders serving as built-in structures of pile bodies of the end-suspended piles are reserved at the bottom of a foundation pit, an in-pit support used for supporting the end-suspended piles is arranged in the foundation pit, the in-pit support comprises a concrete support arranged corresponding to a soil layer part at the top of the foundation pit and connected to the reinforced concrete beamand a steel pipe support arranged corresponding to a soil layer part in the middle of the foundation pit, the steel pipe support acts on the end-suspended piles through a steel enclosing purlin, andthe excavation face of the rock shoulder is surrounded by soil nails and a reinforced concrete surface layer.

Description

technical field [0001] The invention relates to a supporting structure of hanging foot piles for deep foundation pits in combination of soil and rock. Applicable to the field of foundation pit engineering. Background technique [0002] Foundation pits are common in various engineering activities. The support method of foundation pits during excavation is an important research issue in foundation pit engineering, especially in the further development and utilization of urban underground space in the process of urban development. The supporting structure and stability put forward higher requirements. In foundation pit engineering, on the premise of meeting the stability and deformation requirements, the construction process is simple, the environmental pollution is small, and the construction cost is low, which has become an important consideration in the selection of foundation pit support structure. [0003] In the deep foundation pit engineering with upper soft and lower ...

AI Technical Summary

Problems solved by technology

[0003] In the deep foundation pit project with upper soft and lower hard soil rock, for the rock formation in the foundation pit, due to the high strength and good stability of the lower rock mass, especially the part below the moderately weathered rock has better vertical bearing capacity and slope self-stabilization, continuing to use the traditional support method will not only be costly, but also the construction technology of soil support will encounter some problems in the bedrock

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