Non-foundation post pressing pile implementation method

A realization method and basic technology, applied in the field of special civil engineering construction, can solve problems such as pressing into the soil, connecting existing foundations, restricting the application of reconstruction and expansion of existing buildings, etc.

Inactive Publication Date: 2017-07-21

ZHEJIANG SCI-TECH UNIV

3 Cites 0 Cited by

AI-Extracted Technical Summary

Problems solved by technology

The reason is: when there is no foundation to press the pile, because there is no foundation in the place where the pile is pressed, the anchor rod of the fixed pile frame has no way to connect with the existing foundation, so the traditional method of static pressure pile with anchor rod cannot press the pile to the foundation through the pile frame soil

[0003] With the needs of reco...

Abstract

The invention discloses a non-foundation post pressing pile implementation method. The ground between two existing foundations is non-foundation foundation soil. The non-foundation post pressing pile implementation method comprises the steps that two parallel counter-force beams are arranged between the two existing foundations; the counter-force beams and the existing foundations are fixedly connected; each counter-force beam is provided with a pile frame, and the two pile frames correspond to each other; a pressing pile is arranged between the two pile frames; a cross beam is arranged at the tops of the two pile frames, and a hydraulic jack is arranged on the cross beam and used for pressing the pressing pile into the non-foundation foundation soil till the top of the pressing pile is flush with the non-foundation foundation soil; and then the counter-force beams together with the pile frames, the cross beam and the hydraulic jack are dismantled from the existing foundations.

Application Domain

Bulkheads/piles

Technology Topic

Structural engineeringArchitectural engineering +1

Image

Examples

Experimental program(1)
Effect test(1)

Example Embodiment

[0034] Embodiment 1. A method for implementing post-pressed piles without foundation, that is, a method of post-pressing piles on the foundation soil without foundation; between two existing foundations 2 is the foundation soil 5 without foundation;

[0035] Two reaction beams 1 parallel to each other are set between two existing foundations 2; bolts 7 are set on each existing foundation 2, and two ends of the reaction beam 1 are respectively set with nuts 6 that match the bolts 7 , So as to realize the fixed connection between the reaction beam 1 and the existing foundation 2; set a pile frame 3 on each of the two reaction beams 1, and the two pile frames 3 correspond to each other; set at the middle position of the two pile frames 3 Pressure pile 4; reaction beam 1 is made of section steel.

[0036] It includes the following steps:

[0037] 1). First, according to the actual needs of the construction, set the position of the pressure pile 4 on the foundation soil 5 where there is no foundation;

[0038] Determine the distance between the center of the pressure pile 4 and the edge I21 of the existing foundation 2 on the left side of the pressure pile 4 as s1, and determine the distance between the center of the pressure pile 4 and the edge Ⅱ22 of the existing foundation 2 on the right side of the pressure pile 4 as s2;

[0039] 2) The distance between the bolt 7 on the existing foundation 2 on the left side of the pressure pile 4 and the edge I21 is a1, and the distance between the bolt 7 on the existing foundation 2 on the right side of the pressure pile 4 and the edge Ⅱ22 is a2;

[0040] a1 is 0.3~0.5m, a2 is 0.3~0.5m; a 1 , A 2 It can be equal or unequal, generally 0.4m, or it can be determined according to actual conditions.

[0041] 3) The distance between the bolt 7 on the existing foundation 2 on the left side of the pressure pile 4 and the left end of the reaction beam 1 is b1, and the bolt 7 and the reaction beam on the existing foundation 2 on the right side of the pressure pile 4 The distance of the right end of 1 is b2, b1=b2; b1 is 0.1±0.01m;

[0042] 4) Determine the length l of the reaction beam 1;

[0043] L=s1+s2+a1+a2+2b1;

[0044] 5). Through the anastomosis of the bolt 7 and the nut 6, the reaction beam 1 and the existing foundation 2 are fixedly connected;

[0045] 6), the pile frame 3 is connected with the reaction beam 1:

[0046] A bolt 9 is provided on the reaction beam 1, and a nut 8 matching the bolt 9 is provided on the pile frame 3, and the bolt 9 and the nut 8 are matched to realize the fixed connection between the pile frame 3 and the reaction beam 1.

[0047] 7) Set a hydraulic jack on the top of the pile 4, and set a jack beam on the top of the two pile frames 3. The lower end of the jack is on the pile 4, and the center lines of the two are the same (that is, the center lines coincide), and the upper end of the jack is at Under the beam, use a hydraulic jack to press the pile 4 into the foundation soil 5 where there is no foundation until the top of the pile 4 is flush with the foundation soil 5 where there is no foundation;

[0048] 8). Remove the reaction beam 1 together with the pile frame 3, the beam and the hydraulic jack from the existing foundation 2;

[0049] 9). When it is necessary to set the next pressed pile 4 on the foundation soil 5 where there is no foundation, repeat the above steps 1) to 8) in sequence.

PUM

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.