Novel underpinning construction method for steel pipe under existing building foundation
A technology of existing buildings and construction methods, applied in infrastructure engineering, construction, building maintenance, etc., can solve the problem of unstable connection between underpinning piles and steel pipes, and achieve the effect of ensuring load strength and securing effect.
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[0047] The following is attached Figure 1-7 The application is described in further detail.
[0048] The embodiment of the present application discloses a new underpinning construction method of a steel pipe under an existing building foundation. refer to figure 1 and figure 2 , the new steel pipe underpinning construction method under the existing building foundation includes the following steps,
[0049] S1, preparatory work, excavating and leveling the site on all four sides of the building, so that the foundation 1 of the building leaks out to ensure the normal operation of the drilling rig;
[0050]S2, piling, a plurality of underpinning piles 3 are driven into both sides of the building to ensure that the height of the top of the underpinning pile 3 is lower than the position to be drilled, and the position of the underpinning pile 3 is close to the position of the foundation 1; the underpinning pile 3 uses The method of hammering is knocked into the soil, and the ...
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