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A kind of pile foundation protection pile and construction method

A technology of pile foundation and pile pole, which is applied in foundation structure engineering, sheet pile walls, buildings, etc., can solve the problems of insufficient bearing capacity at the bottom of the pile, affecting the centering accuracy of the reinforcement cage, and poor stability of the pile body, etc. The probability of instability, the effect of strengthening the connection stability and the convenience of later removal

Active Publication Date: 2021-10-01
CCCC SECOND HARBOR ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of protection pile still has certain defects. The bearing capacity of the bottom of the pile inserted into the soil layer is insufficient, and the friction force of the pile body is small, which leads to poor stability of the pile body at the part of the protection pile exposed to the soil layer. Workers are disturbed and unstable, which affects the centering accuracy of the steel cage

Method used

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  • A kind of pile foundation protection pile and construction method
  • A kind of pile foundation protection pile and construction method
  • A kind of pile foundation protection pile and construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as Figure 1-3 Among them, a pile foundation protection pile, including pile protection pole 4 and concrete base 5, also includes reinforcement cage 3, reinforcement cage 3 adopts the rectangular body structure of opening at both ends, reinforcement cage 3 is buried vertically around the concrete foundation 5 In the pile protection pit 1, the concrete base 5 is arranged in the reinforcement cage 3;

[0041] The reinforcement cage 3 is formed by binding the main reinforcement 301 and the stirrup 302 with wires, and a "V"-shaped reinforcement 6 is arranged between two adjacent main reinforcements 301, and one section of the "V"-shaped reinforcement 6 is bound with wires. It is fixed on the reinforcement cage 3, and the other section extends obliquely upwards to contact with the side wall of the pile protection pit 1.

[0042] In a preferred solution, the bottom surface of the pile protection pit 1 is backfilled with a sand layer 2 , and the lower end of the main rei...

Embodiment 2

[0046] On the basis of embodiment 1, adopt following construction method to carry out a kind of pile foundation pile protection construction:

[0047] 1) Use the special mold 8 to prefabricate the pile guard 4 and the concrete base 5;

[0048] 2) Prefabricated binding reinforcement cage 3;

[0049] 3) Excavation of pile protection pit 1 on site;

[0050] 4) Backfill fine sand on the bottom surface of the excavated pile protection pit 1 to form a sand layer 2;

[0051] 5) Install the reinforcement cage 3 to ensure that the main reinforcement 301 of the reinforcement cage 3 is inserted into the sand layer 2, and that the ends of the "V"-shaped reinforcement 6 on the periphery of the reinforcement cage 3 are in contact with the side wall of the pile protection pit 1;

[0052] 6) Install the concrete base 5 into the reinforcement cage 3, so that the reinforcement cage 3 and the concrete base 5 fit together;

[0053] 7) Backfill the soil and compact it.

Embodiment 3

[0055] Such as Figure 5-8 Among them, the special mold 8 is composed of a group of first side plates 9, a group of second side plates 10 and a bottom plate 11;

[0056] Both sides of the first side plate 9 are provided with vertical ribs 901, and both sides of the inner side of the second side plate 10 are provided with vertical grooves 1001 matching the vertical ribs 901;

[0057] Two parallel horizontal grooves 111 are provided on both sides of the top surface of the bottom plate 11, and the bottom of the second side plate 10 is provided with a horizontal convex strip 1002 matching the horizontal grooves 111;

[0058] The middle part of the bottom plate 11 is provided with an opening 112 having the same size as the support plate 7 .

[0059] In a preferred solution, the upper end of the vertical ridge 901 is flush with the top surface of the first side plate 9, the lower end of the vertical ridge 901 is higher than the bottom surface of the first side plate 9, and the leng...

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Abstract

A pile foundation protection pile, including a protection pile rod and a concrete base, and a reinforcement cage, the reinforcement cage adopts a rectangular structure with two ends open, the reinforcement cage is vertically buried in the pile protection pit around the concrete foundation, and the concrete foundation Set in the reinforcement cage; the reinforcement cage is made of the main reinforcement and the stirrup by binding wires, and there is also a "V"-shaped reinforcement between two adjacent main reinforcements, and one section of the "V"-shaped reinforcement is fixed on the reinforcement by wire binding On the cage, another section extends upwards slopingly to contact with the side wall of the pile protection pit. The construction method of the pile foundation protection pile includes: 1) prefabrication of the protection pile; 2) binding of the reinforcement cage; 3) excavation of the protection pile pit; 4) backfilling with fine sand; 5) installation of the reinforcement cage; 6) installation of the concrete base; 7) backfilling After the soil is compacted. Adopting the above structure and method can improve the stability of the retaining pile, avoid the situation of inclination and instability of the retaining pile, and can also ensure high stability at the site where mechanical and manual activities are frequent, and provide favorable conditions for pile foundation construction.

Description

technical field [0001] The invention relates to the field of pile foundation construction, in particular to a pile foundation protection pile and a construction method. Background technique [0002] In the construction of bridges, the pile foundation is used as the foundation structure, and its construction quality has always been the focus of engineering attention. In order to ensure that the reinforcement cage of the pile foundation is centered, four guard piles are often used to mark the center point of the drilling hole in engineering, and four mutually perpendicular steel bars are bound on the top of the reinforcement cage with wire ropes to form the cross center point of the reinforcement cage. Check the center point of the crossing line of the guard pile and the crossing center point of the reinforcement cage, so that the offset error of the reinforcement cage is within the required range. At the construction site, wooden poles, steel bars and other materials are oft...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/34
CPCE02D5/34
Inventor 王四旺刘胤易帅宋超熊天祥佟治刚向延喜章超石华平冯天华陈凯刘亮李交祺杨卫强
Owner CCCC SECOND HARBOR ENG
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