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Assembling external restraining precast pile with stiffening ribs and capable of preventing bending and shear damage

A shear failure, prefabricated pile technology, applied in sheet pile wall, construction, infrastructure engineering and other directions, can solve problems such as complicated situations, improve horizontal resistance, improve pile bearing capacity, and enhance pile bending resistance. The effect of the ability to cut

Active Publication Date: 2013-08-07
SHANDONG TONGYUAN DESIGN GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there are a series of problems that further complicate the situation, such as the connection between the pile head and the cap, according to the current commonly used method, the pile is embedded in the cap by 50-100 mm, and the main reinforcement of the pile body extends into the cap for a certain length

Method used

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  • Assembling external restraining precast pile with stiffening ribs and capable of preventing bending and shear damage
  • Assembling external restraining precast pile with stiffening ribs and capable of preventing bending and shear damage
  • Assembling external restraining precast pile with stiffening ribs and capable of preventing bending and shear damage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1 A prefabricated pile with stiffener assembly type external restraint to prevent bending and shear damage, including a prefabricated pile 2, the pile head end of the prefabricated pile 2 is wrapped with an external restraint member 1, such as figure 1 , figure 2 As shown, the outer restraint member 1 is composed of two steel members; the outer surface of the outer restraint member 1 is welded with several stiffeners 6, and the direction of the stiffener 6 is consistent with the axial direction of the prefabricated pile 2. The axis is distributed circularly.

[0024] The two pieces of steel components are spliced ​​together by connecting bolts 4 , the outer restraint component 1 is in the shape of a round tube, and a gasket 5 is provided between spliced ​​ends of the two pieces of steel components.

[0025] Two sets of clamping block-slot matching structures are arranged between the prefabricated pile 2 and the outer restraint member 1, and the two sets of cla...

Embodiment 2

[0027] Example 2 A prefabricated pile with stiffener assembly type external restraint to prevent bending and shear damage, such as Figure 4 As shown, the difference from Embodiment 1 lies in that: the outer constraining member 1 is in the shape of a rectangular tube; each block-slot matching structure includes two block-slot matching structures. All the other are identical with embodiment 1.

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Abstract

The invention discloses an assembling external restraining precast pile with stiffening ribs and capable of preventing bending and shear damage. The assembling external restraining precast pile comprises a precast pile body. An external restraining member is wrapped outside a pile head end of the precast pile body and formed by two steel members. A plurality of stiffening ribs are welded on the outer surface of the external restraining member, the trend of the stiffening ribs is the same as the axial direction of the precast pile body, and the stiffening ribs are distributed in an annular mode relative to the axis of the precast pile body. The precast pile has the advantage that the stiffening ribs are welded on the surface of the external restraining member of the pile head, and the pile side resistance is improved; bending and shear damage resistance of the precast pile is improved; the bending and shear damage resistance is only improved locally at a portion with largest bending moment shearing force, and engineering cost is saved; an assembling external restraining device is adopted at the pile head, pile head damage can be avoided, and construction is easy; and manufacturing and installing are convenient, members of all portions can be machined in a factory and then transported to a construction place, and assembling is finished fast.

Description

technical field [0001] The invention relates to an assembled external restraint prefabricated pile with stiffening ribs to prevent bending and shearing damage. Background technique [0002] At present, pile foundations are widely used. Among them, prefabricated piles have the advantages of good pile quality, fast construction speed, low project cost, green construction, convenient pile inspection, and factory production, which meet the needs of contemporary scientific development. It is widely used in pile foundation engineering. [0003] Seismic resistance of pile foundations has always been a difficult problem in engineering. When piles are subjected to horizontal loads in the soil, their working state is elastic foundation beams or elastoplastic foundation beams, depending on whether the foundation soil is in an elastic or elastoplastic state due to earthquake action. The nonlinear stress-strain relationship of the soil is obvious during strong earthquakes, and the stiff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/30
Inventor 徐承强
Owner SHANDONG TONGYUAN DESIGN GRP
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