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Telescopic steel reinforcement cage, compression equipment thereof and method for constructing cast-in-situ bored pile

A steel cage and telescopic technology, applied in sheet pile walls, infrastructure engineering, construction, etc., can solve problems such as high labor costs and shift costs, poor integrity of steel cages, and reduced pile quality, and achieve strong integrity. , good strength and bearing capacity, ensure the effect of pile quality

Pending Publication Date: 2019-05-28
NINGBO HONGCHEN CONSTR +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, when the height of the operating space outside the hole is limited, the joint construction method is inefficient and time-consuming, and the labor and shift costs are high. The welding of the steel cage needs to consume solder, and the integrity of the steel cage welded joint by joint is poor. Reduce the final pile quality

Method used

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  • Telescopic steel reinforcement cage, compression equipment thereof and method for constructing cast-in-situ bored pile
  • Telescopic steel reinforcement cage, compression equipment thereof and method for constructing cast-in-situ bored pile
  • Telescopic steel reinforcement cage, compression equipment thereof and method for constructing cast-in-situ bored pile

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0037] Such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5As shown, the telescopic reinforcement cage of the present invention includes a longitudinal reinforcement 1 and an annular stirrup 2, each longitudinal reinforcement 1 is formed by twisting multiple strands of steel strands, and the longitudinal reinforcement 1 and the stirrup 2 are connected by a fastener 3 connect. Each connecting fastener 3 includes an inner jacket 3.1 fixed with a single longitudinal rib 1, an outer jacket 3.2 fixed with a single stirrup 2, and a rotatably connected inner jacket 3.1 and outer jacket 3.2. rivets 3.3. Specifically, the inner side of the inner jacket 3.1 is provided with an inner opening for the longitudinal rib 1 to squeeze in, and the inner opening is locked by the inner bolt 3.4, and the outer side of the inner jacket 3.1 is provid...

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Abstract

The invention discloses a telescopic steel reinforcement cage, compression equipment thereof and a method for constructing a cast-in-situ bored pile. The telescopic steel reinforcement cage compriseslongitudinal ribs and annular stirrups; the longitudinal ribs are connected with the annular stirrups through connecting fasteners; each connecting fastener comprises an inner jacket which is fixed toa single longitudinal rib, an outer jacket which is fixed to a single stirrup and a rivet which is rotatably connected with the inner jacket and the outer jacket; the connecting fastener on each stirrup and the connecting fastener of the stirrup on the adjacent layer are arranged in a staggered manner; the compression equipment comprises a pressing head which is used for pressing one end of the steel reinforcement cage down, a middle guide rod and a base; the guide rod is fixed to the base; the pressing head is in sliding fit with the guide rod; a turntable which is driven by a motor and is used for rotating the other end of the steel reinforcement cage is arranged in the base. The key points of the method are that the steel reinforcement cage is placed into a formed hole and then is rebounded to stretch. The telescopic steel reinforcement cage, the compression equipment and the method are high in construction efficiency and high in speed in a construction site.

Description

technical field [0001] The invention relates to the technical field of bored piles in civil engineering, in particular to a telescopic reinforcement cage and its compression equipment, and a method for constructing bored piles using the reinforcement cage and compression equipment. Background technique [0002] Bored piles have been widely used in structural engineering foundations such as roads, railways, and bridges due to their mature construction technology, high bearing capacity, and wide application range. The construction process of traditional bored piles generally includes the steps of forming holes, binding and placing steel cages, and pouring concrete. [0003] However, when constructing bored piles in some special occasions, that is, under net low conditions or limited height conditions, such as construction under viaducts, in tunnels, and near airport runways, due to the limited height outside the hole, it is impossible to place The complete steel cage is bound...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/34
Inventor 李福连陶灵聪徐正荣潘伟峰史世雍
Owner NINGBO HONGCHEN CONSTR
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