阅读说明：本技术 建筑桩基及施工方法 (Building pile foundation and construction method ) 是由 夏建新 许灵杰 翁时冬 于 2020-04-13 设计创作，主要内容包括：本发明公开了一种建筑桩基,包括预制桩和设于预制桩顶部的多根锚固筋,其特征是：所述预制桩由多节桩体构成,且每相邻的两节桩体之间设有套在桩体上的双向套筒,所述双向套筒中部设有可向外弯折的套管。本发明还公开了该建筑桩基的施工方法。该建筑桩基能够保证桩体的垂直度,而且还加强紧固了桩基变截面的强度及桩基承载能力。(The invention discloses a building pile foundation, which comprises a precast pile and a plurality of anchoring ribs arranged at the top of the precast pile, and is characterized in that: the precast pile is composed of a plurality of sections of pile bodies, a bidirectional sleeve sleeved on the pile bodies is arranged between every two adjacent sections of pile bodies, and a sleeve capable of being bent outwards is arranged in the middle of the bidirectional sleeve. The invention also discloses a construction method of the building pile foundation. This building pile foundation can guarantee the straightness that hangs down of pile body, but also strengthens fastening pile foundation variable cross section's intensity and pile foundation bearing capacity.)

1. Building pile foundation, including precast pile and locate the many anchor muscle at precast pile top, characterized by: the precast pile is composed of a plurality of sections of pile bodies, a bidirectional sleeve sleeved on the pile bodies is arranged between every two adjacent sections of pile bodies, and a sleeve capable of being bent outwards is arranged in the middle of the bidirectional sleeve.

2. The building pile foundation of claim 1, wherein: the sleeve in the middle of the bidirectional sleeve comprises an upper sleeve and a lower sleeve, the upper sleeve and the lower sleeve are connected through a thin plate, and a cavity is enclosed between the upper sleeve and the lower sleeve.

3. The building pile foundation of claim 2, wherein: the bottom of the upward sleeve of the bidirectional sleeve is provided with a through hole communicated with the cavity, and high-strength cement mortar can be poured into the cavity through the through hole.

4. A building pile foundation according to claim 2 or 3, wherein: the lower part of the upward sleeve of the bidirectional sleeve is provided with a plurality of first flow passages communicated with the outside.

5. A building pile foundation according to claim 2 or 3, wherein: go up the cover pipe inner wall equidistant and be equipped with multichannel first annular fixture block, the cover pipe inner wall equidistant is equipped with multichannel second annular fixture block down, works as go up the cover pipe and outwards buckle to when together, first annular fixture block and second annular fixture block intercrossing are pegged graft.

6. The building pile foundation of claim 5, wherein: and the first annular clamping block and the second annular clamping block are provided with second flow channels in a penetrating manner, and when the upper sleeve and the lower sleeve are outwards bent to be overlapped together, all the second flow channels are communicated.

7. The building pile foundation of claim 5, wherein: the upper ends of the first annular clamping block and the second annular clamping block are arc-shaped.

8. A building pile foundation according to claim 2 or 3, wherein: and one end of the upper sleeve opposite to the lower sleeve is arc-shaped.

9. A construction method of a building pile foundation is characterized by comprising the following steps: the method comprises the following steps:

the method comprises the following steps: punching pile holes in the tamped soil body;

step two: sleeving a lower sleeve of the bidirectional sleeve on the first section of pile body and placing the lower sleeve into the pile hole;

step three: pouring high-strength cement mortar into the cavity through the through hole;

step four: inserting a second pile body into an upper sleeve of a first bidirectional sleeve, applying pressure to the second pile body, breaking a thin plate after the bidirectional sleeve is pressed, and then slowly bending an upper sleeve and a lower sleeve outwards, wherein high-strength cement mortar is pressed to be extruded into nearby rammed soil through a first flow channel and a second flow channel and to be integrated with the rammed soil in the process, and when the upper sleeve and the lower sleeve are bent outwards to be overlapped, the pressure is stopped to be applied to the second pile body, and at the moment, a first annular clamping block and a second annular clamping block are mutually crossed and spliced;

step five: and after the high-strength cement mortar is cooled, repeating the second step to the fourth step to construct the subsequent pile body until all the pile bodies are constructed.

Technical Field

The invention relates to a building pile foundation and also relates to a construction method of the building pile foundation.

Background

At present, the precast pile construction of the building pile foundation is generally to punch a pile hole on a tamped soil body and then insert the precast pile into the pile hole, the cross section of the building pile foundation is uniform, the building pile foundation does not have a variable cross section, and the strength and the bearing capacity of the pile foundation are limited.

Disclosure of Invention

In view of the defects of the background art, the invention aims to provide a building pile foundation which not only ensures the perpendicularity of a pile body, but also strengthens the strength of the variable cross section of the pile foundation and the bearing capacity of the pile foundation.

Therefore, the invention is realized by adopting the following technical scheme:

building pile foundation, including precast pile and locate the many anchor muscle at precast pile top, characterized by: the precast pile is composed of a plurality of sections of pile bodies, a bidirectional sleeve sleeved on the pile bodies is arranged between every two adjacent sections of pile bodies, and a sleeve capable of being bent outwards is arranged in the middle of the bidirectional sleeve.

Furthermore, the sleeve in the middle of the bidirectional sleeve comprises an upper sleeve and a lower sleeve, the upper sleeve and the lower sleeve are connected through a thin plate, and a cavity is enclosed between the upper sleeve and the lower sleeve.

Furthermore, the upward sleeve bottom of the bidirectional sleeve is provided with a through hole communicated with the cavity, and high-strength cement mortar can be poured into the cavity through the through hole.

Furthermore, the lower part of the upward sleeve of the bidirectional sleeve is provided with a plurality of first flow passages communicated with the outside.

Further, it is equipped with the first annular fixture block of multichannel to go up the cover intraductal wall equidistant, the cover intraductal wall equidistant is equipped with multichannel second annular fixture block down, works as go up the cover pipe and outwards buckle to when together with the lower casing, first annular fixture block and second annular fixture block intercrossing are pegged graft.

Furthermore, the first annular clamping block and the second annular clamping block are provided with second flow channels in a penetrating mode, and when the upper sleeve and the lower sleeve are bent outwards to be overlapped together, all the second flow channels are communicated.

Furthermore, the upper ends of the first annular clamping block and the second annular clamping block are arc-shaped.

Furthermore, one end of the upper sleeve opposite to one end of the lower sleeve is arc-shaped.

After adopting above-mentioned technical scheme, two-way sleeve pressurized back sheet metal department fracture earlier, go up sleeve pipe and lower casing and slowly outwards buckle afterwards, above-mentioned in-process high strength cement mortar pressurized is extruded through first runner and second runner in being close to the soil body of ramming, and form an organic whole with the soil body of ramming, first annular fixture block and second annular fixture block intercrossing grafting when going up sleeve pipe and lower casing and outwards buckling to folding together, prevent that the pile body from taking place lateral shifting, the straightness that hangs down of pile foundation has been guaranteed, the intensity and the pile foundation bearing capacity of fastening the pile foundation variable cross section have still been strengthened simultaneously.

The invention also provides a construction method of the building pile foundation, which is characterized by comprising the following steps: the method comprises the following steps:

the method comprises the following steps: punching pile holes in the tamped soil body;

step two: sleeving a lower sleeve of the bidirectional sleeve on the first section of pile body and placing the lower sleeve into the pile hole;

step three: pouring high-strength cement mortar into the cavity through the through hole;

step four: inserting a second pile body into an upper sleeve of a first bidirectional sleeve, applying pressure to the second pile body, breaking a thin plate after the bidirectional sleeve is pressed, and then slowly bending an upper sleeve and a lower sleeve outwards, wherein high-strength cement mortar is pressed to be extruded into nearby rammed soil through a first flow channel and a second flow channel and to be integrated with the rammed soil in the process, and when the upper sleeve and the lower sleeve are bent outwards to be overlapped, the pressure is stopped to be applied to the second pile body, and at the moment, a first annular clamping block and a second annular clamping block are mutually crossed and spliced;

step five: and after the high-strength cement mortar is cooled, repeating the second step to the fourth step to construct the subsequent pile body until all the pile bodies are constructed.

Drawings

The invention has the following drawings:

FIG. 1 is a schematic structural view of a precast pile according to the present invention after construction;

FIG. 2 is an enlarged view of FIG. 1 at A;

fig. 3 is a schematic structural view of the sleeve of the present invention.

Reference numerals: 1. anchoring ribs; 2. a pile body; 3. a bi-directional sleeve; 4. sleeving a sleeve; 5. setting a sleeve; 6. a thin plate; 7. a cavity; 8. a through hole; 9. a first flow passage; 10. a first annular fixture block; 11. a second annular fixture block; 12. a second flow passage; 13. a compacted soil mass.

Detailed Description

Referring to the attached drawings, the building pile foundation provided by the invention comprises a precast pile and a plurality of anchoring ribs 1 arranged at the top of the precast pile, and is characterized in that: the precast pile is composed of a plurality of pile bodies 2, a bidirectional sleeve 3 sleeved on the pile body 2 is arranged between every two adjacent pile bodies 2, a sleeve capable of being bent outwards is arranged in the middle of the bidirectional sleeve 3, the sleeve in the middle of the bidirectional sleeve 3 comprises an upper sleeve 4 and a lower sleeve 5, the upper sleeve 4 and the lower sleeve 5 are connected through a thin plate 6, a cavity 7 is formed between the upper sleeve 4 and the lower sleeve 5, a through hole 8 communicated with the cavity 7 is formed in the bottom of the upward sleeve of the bidirectional sleeve 3, high-strength cement mortar can be filled into the cavity 7 through the through hole 8, a plurality of first flow channels 9 communicated with the outside are arranged at the lower part of the upward sleeve of the bidirectional sleeve 3, a plurality of first annular clamping blocks 10 are arranged on the inner wall of the upper sleeve 4 at equal intervals, a plurality of second annular clamping blocks 11 are arranged on the inner wall of the lower sleeve 5 at equal intervals, and when the upper sleeve 4 and the lower sleeve 5 are bent outwards, the first annular fixture block 10 and the second annular fixture block 11 are mutually crossed and inserted, the first annular fixture block 10 and the second annular fixture block 11 are respectively provided with a second flow channel 12 in a penetrating mode, when the upper sleeve 4 and the lower sleeve 5 are outwards bent to be overlapped, all the second flow channels 12 are communicated, the upper ends of the first annular fixture block 10 and the second annular fixture block 11 are both arc-shaped, and the opposite end of the upper sleeve 4 and the opposite end of the lower sleeve 5 are arc-shaped.

In this embodiment, sheet metal 6 department breaks first after two-way sleeve 3 is pressed, go up sleeve pipe 4 and lower casing 5 and slowly outwards buckle afterwards, high strength cement mortar is pressed and is crowded near in the tamped soil body through first runner 9 and second runner 12 in the above-mentioned process, and form an organic whole with the tamped soil body, first annular fixture block 10 and second annular fixture block 11 intercross when going up sleeve pipe 4 and lower casing 5 and outwards buckling to folding together, prevent that pile body 2 from taking place lateral displacement, guaranteed the straightness that hangs down of pile foundation, still strengthened the intensity and the pile foundation bearing capacity of fastening the pile foundation variable cross section simultaneously.

The invention also provides a construction method of the building pile foundation, which is characterized by comprising the following steps: the method comprises the following steps:

the method comprises the following steps: punching pile holes in the tamped soil body 13;

step two: sleeving the lower sleeve of the bidirectional sleeve 3 on the first pile body 2 and placing the lower sleeve into the pile hole;

step three: high-strength cement mortar is poured into the cavity 7 through the through hole 8;

step four: inserting a second pile body 2 into an upper sleeve of a first two-way sleeve 3, applying pressure to the second pile body 2, breaking a thin plate 6 after the two-way sleeve 3 is pressed, then slowly bending an upper sleeve 4 and a lower sleeve 5 outwards, extruding high-strength cement mortar into a nearby rammed soil body 13 through a first flow channel 9 and a second flow channel 12 in the process, forming an integral body with the rammed soil body 13, stopping applying pressure to the second pile body 2 when the upper sleeve 4 and the lower sleeve 5 are bent outwards to be overlapped together, and at the moment, alternately inserting a first annular clamping block 10 and a second annular clamping block 11 into each other;

step five: and after the high-strength cement mortar is cooled, repeating the second step to the fourth step to construct the subsequent pile body 2 until all the pile bodies 2 are constructed.