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

A technology of prestressed tie rods and I-shaped piles, which is applied in the direction of foundation structure engineering, arch bridges, buildings, etc., can solve the problems of being unable to bear horizontal loads, and cannot use inclined anti-push piles, so as to reduce the amount of concrete, self-weight and concrete The effect of reducing the amount and reducing the pile length

Pending Publication Date: 2021-11-26
ARCHITECTURAL DESIGN RES INST OF GUANGDONG PROVINCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

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Experimental program
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Effect test

Embodiment 1

[0043] The plane size of the I-shaped pile cap 2 is 23200mm in length, 23200mm in width, 8200m in width at the top flange 21, 5200mm in width at the bottom flange 21, 11200mm in belly width, and 2500mm in thickness. 24 artificial hole-digging piles 3 are arranged, 16 artificial hole-digging piles 3 are arranged on the lower flange 21 part, 16 artificial hole-digging piles 3 are arranged on the web 22 part, the total number is 56, and the pile length of the artificial hole-digging piles 3 is 15m.

Embodiment 2

[0045] The plane size of the I-shaped pile cap 2 is 23200mm in length, 23200mm in width, 8200m in width at the top flange 21, 5200mm in width at the bottom flange 21, 11200mm in belly width, and 2500mm in thickness. 24 artificial hole-digging piles 3 are arranged, 16 artificial hole-digging piles 3 are arranged on the lower flange 21 part, 16 artificial hole-digging piles 3 are arranged on the web 22 part, the total number is 56, and the pile length of the artificial hole-digging piles 3 is 10m.

Embodiment 3

[0047]The plane size of the I-shaped pile cap 2 is 23200mm in length, 23200mm in width, 8200m in width at the top flange 21, 5200mm in width at the bottom flange 21, 11200mm in belly width, and 2500mm in thickness. 24 artificial hole-digging piles 3 are arranged, 16 artificial hole-digging piles 3 are arranged on the lower flange 21 part, 16 artificial hole-digging piles 3 are arranged on the web 22 part, the total number is 56, and the pile length of the artificial hole-digging piles 3 is 10m, at the upper and lower flanges 21 of the I-shaped pile cap 2, perpendicular to the projection line of the main arch 1 on the horizontal plane, two underground diaphragm walls 4 are respectively arranged to improve the ability of the foundation to resist the two-way horizontal thrust of the arch foot. The diaphragm wall 4 is arranged along the full width of the flange 21 of the I-shaped pile cap 2, with a thickness of 1200mm and a height of 4950mm.

[0048] The size of the artificial hol...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/12E02D27/14E01D4/00
CPCE02D27/12E02D27/14E01D4/00
Inventor 苏恒强吴泉霖方虎生陈志海林泳陈银波欧阳秋赵安运李雨盈梁超群
Owner ARCHITECTURAL DESIGN RES INST OF GUANGDONG PROVINCE
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