阅读说明：本技术 旋入式抗拔桩基 (Screw-in type uplift pile foundation ) 是由 贺芳 于 2020-05-20 设计创作，主要内容包括：本发明涉及建筑工程领域,具体公开了一种旋入式抗拔桩基,包括桩基本体、木制模板、钢模板和钻进机构；所述桩基本体包括钢筋结构,所述钢筋结构的周向具有外螺纹状的第一螺纹部,木制模板上形成有与第一螺纹部仿形的第二螺纹部,钢模板上形成有与第二螺纹部仿形的第三螺纹部,木制模板套设在钢筋结构外部,钢模板套设在木制模板外部；所述钻进机构包括锥形的钻进头,所述钻进头可拆卸设置在钢模板的底部。本发明的目的解决桩基抗拔性能差的技术问题。(The invention relates to the field of constructional engineering, and particularly discloses a screw-in type uplift pile foundation, which comprises a pile foundation body, a wooden template, a steel template and a drilling mechanism, wherein the pile foundation body is provided with a pile foundation body; the pile foundation body comprises a steel bar structure, wherein an external thread-shaped first thread part is arranged in the circumferential direction of the steel bar structure, a second thread part copying to the first thread part is formed on the wooden template, a third thread part copying to the second thread part is formed on the steel template, the wooden template is sleeved outside the steel bar structure, and the steel template is sleeved outside the wooden template; the drilling mechanism comprises a conical drilling head, and the drilling head is detachably arranged at the bottom of the steel template. The invention aims to solve the technical problem of poor uplift resistance of a pile foundation.)

1. The utility model provides a screw-in resistance to plucking pile foundation which characterized in that: the pile foundation comprises a pile foundation body, a wooden template, a steel template and a drilling mechanism; the pile foundation body comprises a steel bar structure, wherein an external thread-shaped first thread part is arranged in the circumferential direction of the steel bar structure, a second thread part copying to the first thread part is formed on the wooden template, a third thread part copying to the second thread part is formed on the steel template, the wooden template is sleeved outside the steel bar structure, and the steel template is sleeved outside the wooden template; the drilling mechanism comprises a conical drilling head, and the drilling head is detachably arranged at the bottom of the steel template.

2. The screw-in type uplift pile foundation according to claim 1, wherein: the steel bar structure is pre-buried with a plurality of connecting pieces, the steel template comprises a lower steel part and an upper steel part, the lower steel part is detachably connected with the upper steel part, and the lower steel part is fixedly connected with the connecting pieces; the bottom of lower steel portion is equipped with the drilling platform of cavity toper platform form, and the bottom of drilling platform is equipped with first connecting seat, the overhead first connector that can be connected with first connecting seat that is equipped with creeps into, creeps into overhead dwang that is equipped with one heart.

3. The screw-in type uplift pile foundation according to claim 2, wherein: the top of the inner wall of the drilling platform is provided with a second connecting seat, the second connecting seat is fixedly connected with the lower steel part and the bottom of the steel bar structure, the top of the drilling head is provided with a plurality of sliding grooves, a force transmission plate is horizontally arranged in the sliding grooves in a sliding manner, and the upper end of the force transmission plate is provided with a second connecting head capable of being connected with the second connecting seat; the rotating rod comprises a lower rod part and an upper rod part, a hollow cavity is formed at the upper end of the lower rod part, the lower end of the upper rod part is arranged in the hollow cavity in a sliding mode, a plurality of connecting grooves are formed in the side wall of the hollow cavity, a connecting plate is horizontally arranged on the force transmission plate, one end of the connecting plate extends into the hollow cavity through the connecting grooves, and a first wedge surface is arranged at one end of the connecting plate; the upper rod part and the lower rod part are detachably and fixedly connected.

4. The screw-in type uplift pile foundation of claim 3, wherein: one end of the connecting plate is provided with a first groove, the lower end of the upper rod part is circumferentially provided with a plurality of second grooves, the first groove is hinged with a pull rod, and the pull rod is hinged with the second grooves.

5. The screw-in type uplift pile foundation according to claim 4, wherein: and a plurality of pin holes aligned with each other are formed in the upper rod part and the lower rod part, and pin shafts can be inserted into the pin holes.

6. The screw-in type uplift pile foundation of claim 5, wherein: a horizontal box groove is formed in the first thread portion, and a transverse inserting plate is horizontally arranged in the horizontal box groove in a sliding mode.

7. The screw-in type uplift pile foundation of claim 6, wherein: horizontal case groove and horizontal picture peg all are the arc, and the outside end of horizontal picture peg is sharp-pointed shape.

8. The screw-in type uplift pile foundation of claim 7, wherein: an arc-shaped second wedge surface is formed at the inner side end of the transverse inserting plate, a transverse wedge plate is horizontally arranged at the lower portion of the second connector, and a third wedge surface matched with the second wedge surface is arranged on the transverse wedge plate.

9. The screw-in type uplift pile foundation of claim 8, wherein: the wooden template comprises an upper wooden part and a lower wooden part, wherein the upper wooden part is detachably connected with the lower wooden part.

Technical Field

The invention relates to the field of constructional engineering, and particularly discloses a screw-in type uplift pile foundation.

Background

At present, the traditional cylindrical pile structure is easy to loosen and longitudinally slide in a soft soil layer, has the defects of serious insufficient pulling resistance, insufficient lateral shearing resistance, insufficient dynamic load resistance and the like, and directly influences the stability and reliability of a building foundation. In traditional construction, in order to improve the stability of building foundation in soft soil and increase the friction between the pile body and the soil layer, the depth of the pile body can only be simply increased by common methods, the pile body can deeply penetrate into a foundation soil body as far as possible, the construction difficulty is increased, the construction period is long, the construction cost is high, and the increase of the dead weight of the pile body is unfavorable for the longitudinal stability of the pile body.

Disclosure of Invention

In view of this, the present invention provides a screw-in type uplift pile foundation to solve the technical problem of poor uplift performance of the pile foundation.

In order to achieve the purpose, the invention provides the following technical scheme:

a screw-in type uplift pile foundation comprises a pile foundation body, a wooden template, a steel template and a drilling mechanism; the pile foundation body comprises a steel bar structure, wherein an external thread-shaped first thread part is arranged in the circumferential direction of the steel bar structure, a second thread part copying to the first thread part is formed on the wooden template, a third thread part copying to the second thread part is formed on the steel template, the wooden template is sleeved outside the steel bar structure, and the steel template is sleeved outside the wooden template; the drilling mechanism comprises a conical drilling head, and the drilling head is detachably arranged at the bottom of the steel template.

Optionally, a plurality of connecting pieces are pre-buried on the steel bar structure, the steel formwork comprises a lower steel part and an upper steel part, the lower steel part is detachably connected with the upper steel part, and the lower steel part is fixedly connected with the connecting pieces; the bottom of lower steel portion is equipped with the drilling platform of cavity toper platform form, and the bottom of drilling platform is equipped with first connecting seat, the overhead first connector that can be connected with first connecting seat that is equipped with creeps into, creeps into overhead dwang that is equipped with one heart.

Optionally, a second connecting seat is arranged at the top of the inner wall of the drilling platform, the second connecting seat is fixedly connected with the lower steel part and the bottom of the steel bar structure, a plurality of sliding grooves are formed in the top of the drilling head, a force transmission plate is horizontally arranged in the sliding grooves in a sliding manner, and a second connecting head capable of being connected with the second connecting seat is arranged at the upper end of the force transmission plate; the rotating rod comprises a lower rod part and an upper rod part, a hollow cavity is formed at the upper end of the lower rod part, the lower end of the upper rod part is arranged in the hollow cavity in a sliding mode, a plurality of connecting grooves are formed in the side wall of the hollow cavity, a connecting plate is horizontally arranged on the force transmission plate, one end of the connecting plate extends into the hollow cavity through the connecting grooves, and a first wedge surface is arranged at one end of the connecting plate; the upper rod part and the lower rod part are detachably and fixedly connected.

Optionally, one end of the connecting plate is provided with a first groove, the lower end of the upper rod portion is circumferentially provided with a plurality of second grooves, the first groove is hinged with a pull rod, and the pull rod is hinged with the second grooves.

Optionally, a plurality of pin holes aligned with each other are formed in the upper rod portion and the lower rod portion, and a pin shaft can be inserted into the pin holes.

Optionally, a horizontal box groove is installed on the first threaded portion, and a transverse inserting plate is horizontally arranged in the horizontal box groove in a sliding mode.

Optionally, the horizontal box slot and the transverse insertion plate are both arc-shaped, and the outer side end of the transverse insertion plate is sharp.

An arc-shaped second wedge surface is formed at the inner side end of the transverse inserting plate, a transverse wedge plate is horizontally arranged at the lower portion of the second connector, and a third wedge surface matched with the second wedge surface is arranged on the transverse wedge plate.

Optionally, the wooden form includes an upper wooden portion and a lower wooden portion, and the upper wooden portion is detachably connected with the lower wooden portion.

The working principle and the beneficial effects of the scheme are as follows:

1. dwang in this scheme need be connected with large-scale drilling equipment, then with pile foundation body, wood system template, steel form and creep into the mechanism and install the back subaerially, through creeping into equipment and drilling into ground, need not be under construction the pile foundation ditch in advance, the efficiency of whole work progress improves to some extent relatively. Simultaneously, because the pile foundation body has first screw thread portion, so after it bored into the soil layer, the pile foundation body is equivalent to threaded connection in the soil layer, is showing to promote when tensile strength.

2. Last wooden portion and last steel portion in this scheme all can be dismantled, so when pile foundation body pouring completion back, can take out with used repeatedly with last wooden portion and lower wooden portion. Lower wooden portion and lower steel portion fix on the pile foundation body, and both can increase the weight of pile foundation body lower part, reduce the focus of pile foundation body, strengthen the stability and the pull resistance of pile foundation body. Meanwhile, the lower steel part can also effectively prevent soil from corroding the lower part of the pile foundation body.

3. In order to facilitate drilling the steel bar structure of the pile foundation body into the soil layer, the drilling mechanism is further arranged in the scheme, a force transmission plate is arranged on a drilling head in the drilling mechanism, the force transmission plate can be connected with the drilling head and the drilling platform, so that the torque on the drilling head can be transmitted to the drilling platform, the steel template and the steel bar structure, and the steel template and the steel bar structure can conveniently drill into the soil layer. At the same time, the drill head can also be removed from the drill floor and reused.

4. Still be equipped with horizontal picture peg in this scheme, when the drilling head rebound, horizontal wedge plate on the dowel plate can outwards ejecting with horizontal picture peg, makes horizontal picture peg horizontal insertion to the soil layer in, can further improve the tensile property of pile foundation body like this.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment;

FIG. 2 is a schematic structural diagram of a steel form;

FIG. 3 is an enlarged view taken at P in FIG. 2;

FIG. 4 is a schematic diagram of the configuration of the drill floor and drill head;

FIG. 5 is a schematic illustration of the configuration with the drill floor and drill head removed;

fig. 6 is a longitudinal sectional view of a portion of the structure of the upper and lower shank portions.

The drawings are numbered as follows: pile foundation body 1, wooden formwork 2, steel form 3, horizontal picture peg 4, drilling platform 5, drill bit 6, go up steel portion 7, lower steel portion 8, logical groove 9, second dismantlement groove 10, second dismantlement ring 11, second connecting seat 12, first connecting seat 13, upper boom portion 14, lower boom portion 15, pinhole 16, dowel plate 17, horizontal wedge plate 18, connecting plate 19, spout 20, first connecting groove 21, second connecting groove 22, first connector 23, second connector 24, pull rod 25, first scarf 26, second scarf 27, first recess 28, second recess 29.

Detailed Description

The following is further detailed by way of specific embodiments: