I-shaped bidirectional row pile foundation with prestressed pull rods and anti-push retaining walls

Abstract

The invention provides an I-shaped bidirectional row pile foundation with prestressed pull rods and anti-push retaining walls. The I-shaped bidirectional row pile foundation comprises an I-shaped pile bearing platform, hole digging piles, an underground diaphragm wall and straining beams, the upper end face of a web plate of the I-shaped pile bearing platform is connected with arch feet and is parallel to the projection line direction of a main arch on the horizontal plane, flanges intersect with the projection line direction of the main arch on the horizontal plane, the hole digging piles are distributed on the lower end face of the I-shaped pile bearing platform at equal intervals, the hole digging piles and the I-shaped pile bearing platform form a row pile foundation, the underground diaphragm wall is arranged on the lower end face of the I-shaped pile bearing platform, the extending direction of the underground diaphragm wall is parallel to the flanges of the I-shaped pile bearing platform, and the underground diaphragm wall is located on the edge of the flange on the side, close to the tail end of the arch axis, of the I-shaped pile bearing platform. The straining beams are reinforced concrete prestressed straining beams, horizontal loads generated in the out-of-plane direction when the main arch inclines can be effectively resisted through the web structure of the I-shaped pile bearing platform, and meanwhile damage to a roadbed close to the arch feet is avoided.

Description

technical field [0001] The invention relates to a foundation of a large-span arched building substructure, in particular to a two-way row pile foundation. Background technique [0002] With the development of building technology and construction technology, the application of long-span structures in industrial and civil building design is increasing. The long-span arch structure is widely used in the roof and bridge engineering of long-span construction projects. Because the arch is in the shape of a curved surface, under the action of external force, the bending moment value in the arch can be reduced to a minimum, and the main internal force becomes axial pressure. And the pressure distribution is uniform, which can make full use of the strength of the material, and the section of the beam structure is smaller than that of the same span, so the arch can span a larger space. [0003] However, due to the large span and high height of the arch structure, the arch foot founda...

AI Technical Summary

Problems solved by technology

[0006] (1) If it is applied to the site adjacent to the municipal road, since the large-span conformal building is surrounded by the municipal road, in order to avoid damage to the subgrade, inclined push piles cannot be used;

[0007] (2) Composite pile foundations with inclined thrust piles cannot bear horizontal loads in the out-of-plane direction

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