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Circular-section non-uniform reinforcement anti-skid pile

A circular section, anti-skid pile technology, applied in sheet pile wall, construction, excavation and other directions, can solve the problems of uneven reinforcement of circular section, poor bending resistance, high cost of circular section anti-skid pile engineering, to reduce construction difficulty, The effect of improving the bending resistance and simplifying the construction

Active Publication Date: 2021-07-02
四川省交通勘察设计研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is the high engineering cost and poor bending resistance of circular cross-section anti-skid piles.

Method used

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  • Circular-section non-uniform reinforcement anti-skid pile
  • Circular-section non-uniform reinforcement anti-skid pile
  • Circular-section non-uniform reinforcement anti-skid pile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Such as figure 1 As shown, the anti-skid pile with uneven reinforcement of circular cross-section of the present invention, the anti-skid pile includes a pile body 1, a tension arc layout rib 2, a tension straight line layout rib 3 and a compression arc layout rib 4, the pile body 1 includes a fan-shaped tension zone 10, an arcuate compression zone 20 and a middle zone 30;

[0057] The radii of the sector and the arc are equal and the outer edges of both are close to the edge of the pile body 1;

[0058] The height of the compression zone 10 meets the relative limit compression zone height ξ b requirements;

[0059]A plurality of bundles of the tension arc arrangement ribs 2 are arranged on the arc corresponding to the tension area 10;

[0060] A plurality of bundles of said tensile straight line arrangement ribs 3 are arranged on the line connecting the two ends of the corresponding arc in the tension zone 10;

[0061] A plurality of bundles of said compression arc...

Embodiment 2

[0099] In the specific implementation, the radius of the circular section anti-slide pile is 1m, and the concrete is C30(f c =14.3N / mm 2 ), the steel bar is HRB400 (f y =360N / mm 2 ), corresponding to the relative limit compression zone height ξ b =0.518, the arc value α of the central angle corresponding to the arc value α of the center angle of the 10 tensile arc in the tension zone 2 s = 1 / 3, the arc value of ribs 4 corresponding to the central angle of the compression zone 10 is arranged in arcs α' s =1 / 4, calculate the bearing capacity M of the anti-skid pile:

[0100] Option 1: The most economical reinforcement method (considering to maximize the effect of concrete, that is, take the limit value of α)

[0101] r = 1000mm, the thickness of the protective layer is 60mm, then take r s =1000-80=920mm, put α s =1 / 3 is substituted into the formula to get α≤0.4216, get α=0.4216 at this time, get by the force balance equation, at this time, to make the total amount of stee...

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Abstract

The invention discloses a circular-section non-uniform reinforcement anti-skid pile. The circular-section non-uniform reinforcement anti-skid pile comprises a pile body, tension arc line laying ribs, tension straight line laying ribs and compression arc line laying ribs; the pile body comprises a fan-shaped tension area, an arch-shaped compression area and a middle area; the radius of the fan shape is equal to that of the arch shape, and the outer side edges of the fan shape and the arch shape are close to the edge of the pile body; the height of the compression area meets the requirement for the height xi b of the compression area of the relative boundary; a plurality of tension arc line laying ribs are arranged on the arc of the tension area; the plurality of tension straight line laying ribs are arranged on the connecting line of the two end points of the arc of the tension area; a plurality of compression arc line laying ribs are arranged on the arc of the compression area; and the arc corresponding to the middle area is provided with a plurality of steel bars used for enhancing the structural strength. After non-uniform reinforcement is adopted in the circular-section anti-skid pile, the bending resistance of the circular-section anti-skid pile can be improved in a relatively uniform reinforcement manner, and application of the circular-section anti-skid pile in supporting and blocking engineering can be better expanded; and meanwhile, the construction difficulty can be lowered, construction can be simplified, and the engineering manufacturing cost is reduced by reducing usage of the steel bars.

Description

technical field [0001] The invention relates to the field of bridge engineering construction, in particular to an anti-skid pile with unevenly reinforced circular cross-section. Background technique [0002] Because the moment of inertia of circular cross-section piles is smaller than that of rectangular cross-section piles, they are less used in bending conditions. However, the circular cross-section piles used in bridge engineering or pile foundation engineering mainly bear vertical loads, and the foundation pit wall support piles bear certain horizontal loads (bending resistance). Or the anti-slide piles with circular cross-section are mostly used in the supporting and retaining projects with high construction period requirements. Compared with the anti-sliding piles with rectangular cross-section of the same area, the advantages of the anti-sliding piles with circular cross-section in the above-mentioned projects are quite obvious. At present, the bending reinforcement ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/04E02D17/20E02D5/22
CPCE02D17/04E02D17/207E02D5/22Y02E10/50
Inventor 王希宝袁松王蓉蓉张贤霂
Owner 四川省交通勘察设计研究院有限公司