Double-row miniature steel pipe pile grouting wall partition structure and method

Abstract

The invention discloses a double-row miniature steel pipe pile grouting wall partition structure and method. The partition structure includes a pair of double-row pile support mechanisms, crown beams arranged on the top of each double-row pile support mechanism and connecting The connecting beam of two crown beams, the double-row pile support mechanism includes a rear row of piles, a front row of piles and an intermediate high-pressure jet grouting pile, the front row of piles is located outside the rear row of piles, and the rear row of piles and the front row of piles are all steel pipe piles. The steel pipe piles include steel pipes and the mixed slurry of cement and water glass filled in the steel pipes. Several grouting holes are arranged on the steel pipes in the axial direction. The middle high-pressure jet grouting pile is arranged between the back row of piles and the front row of piles and the two are connected as a whole to form a water-tight curtain wall between the piles. The cement grout of the soil between the front row of piles. The invention can be used as a reinforcement protection measure for existing adjacent infrastructures during underground engineering construction.

Description

technical field [0001] The invention relates to a partition reinforcement method for existing adjacent buildings excavated by underground engineering, in particular to a wall partition structure and method for grouting double-row miniature steel pipe piles in the construction of underground engineering adjacent to existing infrastructure, which is used for In the process of underground excavation in densely built urban areas, the partition reinforcement of adjacent elevated buildings and buildings is carried out. Background technique [0002] In recent years, with the continuous improvement of domestic urbanization level, urban buildings and infrastructure have become more and more dense. However, the development and utilization of urban underground space is constrained by the existing adjacent buildings and infrastructure, and the impact is significant. The development of underground spaces such as underground pedestrian passages, comprehensive pipe corridors, and subway s...

AI Technical Summary

Problems solved by technology

Before the excavation of traditional underground projects, support piles, ground connection walls, anchor rods, etc. are usually used for enclosure. The traditional partition reinforcement technology cannot meet the needs of urban infrastructure due to defects such as poor structural bending resistance, low overall rigidity, and large deformation. Underground engineering excavation space in dense areas is limited, construction schedule is tight and other conditions

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