Construction Method of Composite Foundation Pile for Towering Structures in Swamp Area

A construction method and technology for structures, which are applied in infrastructure engineering, construction, sheet pile walls, etc., can solve problems such as reducing safety, and achieve the effect of improving vertical bearing capacity and good anti-torsion effect.

Active Publication Date: 2019-07-12
POWERCHINA CONSTR GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Second, for foundation piles of bent structures and flexible structures with strong adaptability to differential deformation, the use of composite foundation piles considering the cap effect will not reduce the degree of safety

Method used

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  • Construction Method of Composite Foundation Pile for Towering Structures in Swamp Area
  • Construction Method of Composite Foundation Pile for Towering Structures in Swamp Area
  • Construction Method of Composite Foundation Pile for Towering Structures in Swamp Area

Examples

Experimental program
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Embodiment Construction

[0017] Take the installation of a group of linear transmission towers with a height of 57 meters, a weight of about 43.4 tons, and a root width of 13.8 meters as an example. The moisture content of the soil in this area is 37%, and the soil around the pile is silty clay. One foundation pile is designed at each corner of the tower, and one is designed in the middle; the diameter of the foundation pile is 400mm.

[0018] Use an auger drill to form a hole at the pile position with a diameter of 1 meter. Mix the curing agent into the soil and mix it well before refilling the hole; then use the auger drill to form a pile hole with a pile length of 5 meters; After the pile hole is formed, the reinforcement cage is lowered. The outer diameter of the reinforcement cage is 360mm. The main reinforcement of the reinforcement cage is a threaded reinforcement with a diameter of 20mm. . There are no stirrups within 1000mm of the lower part of the steel cage. After the steel cage is in plac...

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Abstract

The invention relates to a construction method of composite foundation piles of a high-rising building in a mire region. The composite foundation piles formed by the use of the construction method have the advantages of end bearing piles and the advantages of friction piles. Under the influence of the load generated by the building or a structure on the upper portion, the effect of the soil mass among the piles can be effectively utilized to bear stress together. Meanwhile, a reversing coupling beam and a large bearing platform are combined, the reversing coupling beam is embedded into the bearing platform, and therefore the torsion resistance effect of the foundation piles can be better, and large heads generated at the pile ends through tamping enable the vertical bearing capacity of the piles to be improved. In the construction process, a novel curing agent is used so that the strength and the water stability of the soil mass on the periphery of each pile can be improved, and the bond stress of the piles can be improved.

Description

technical field [0001] The invention relates to a construction method for a composite foundation pile of a towering structure in a swamp area. Background technique [0002] In the prior art, due to the towering structure, not only the vertical load is large and concentrated, but also the overturning moment caused by wind load and earthquake load increases exponentially, so the foundation and foundation are required to provide higher vertical and horizontal bearing capacity, and at the same time make the settlement and inclination are controlled within the allowable range, and ensure that the building or structure has sufficient stability under wind load and earthquake load. Moreover, often in muddy areas, the soil has a large water content and is loose and cannot form a good constraint on the foundation of the structure. Therefore, the construction difficulty of the towering structure is further increased. [0003] The composite foundation pile is a composite load-bearing f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D27/34E02D27/14E02D5/38E02D5/44C04B28/00
CPCC04B28/00C04B2201/50E02D5/38E02D5/44E02D27/14E02D27/34C04B14/042C04B18/0445C04B18/101C04B24/2652
Inventor 彭刚杜慧鹏张松江
Owner POWERCHINA CONSTR GRP
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