阅读说明：本技术 一种锚杆静压桩 (Anchor rod static pressure pile ) 是由 杨砚宗 顾国荣 陈晖� 吴文龙 郭俊杰 董科亨 于 2019-11-13 设计创作，主要内容包括：本发明涉及岩土工程技术领域的一种锚杆静压桩,包括注浆管组、桩身,桩身包括主体段以及注浆段,注浆管组从桩身上端竖直地插入桩身并用于给桩身内腔注浆,主体段至少包括一个沉桩注浆腔,注浆管组包括侧壁沉桩注浆管,侧壁沉桩注浆管的出口穿入沉桩注浆腔内,主体段侧壁安装有若干带有单向阀的单向喷浆管,且若干单向喷浆管环绕主体段侧壁分布,单向喷浆管的出口外露,单向喷浆管的进口与沉桩注浆腔接通。如遇较大的压桩动阻力,则通过侧壁沉桩注浆管向沉桩注浆腔内注浆,使得具有一定压力的浆体通过单向喷浆管流出到桩孔内壁上,从而产生润滑效果,减少压桩动阻力,以克服沉桩困难、作业效率低等施工问题。(The invention relates to an anchor rod static pressure pile in the technical field of geotechnical engineering, which comprises a grouting pipe group and a pile body, wherein the pile body comprises a main body section and a grouting section, the grouting pipe group is vertically inserted into the pile body from the upper end of the pile body and is used for grouting an inner cavity of the pile body, the main body section at least comprises a pile sinking grouting cavity, the grouting pipe group comprises a side wall pile sinking grouting pipe, an outlet of the side wall pile sinking grouting pipe penetrates into the pile sinking grouting cavity, a plurality of one-way guniting pipes with one-way valves are arranged on the side wall of the main body section, the plurality of one-way guniting pipes are distributed around the side wall of the main body section, the outlets of the one-way guniting pipes are exposed, and the inlets of the. If meet great pile-sinking dynamic resistance, then through lateral wall pile-sinking slip casting pipe to pile-sinking slip casting intracavity slip casting for the slurry that has certain pressure flows out on the stake downthehole wall through one-way shotcrete pipe, thereby produces lubricated effect, reduces pile-sinking dynamic resistance, in order to overcome the construction problems such as pile-sinking difficulty, operating efficiency hang down.)

1. The utility model provides an anchor rod static pressure pile, includes slip casting nest of tubes, pile body (1) sets up to vertical tubular pile structure, pile body (1) includes main part section (101) and slip casting section (103) that are in main part section (101) lower extreme, the slip casting nest of tubes inserts pile body (1) from pile body (1) upper end vertically and is used for pile body (1) inner chamber slip casting, its characterized in that: main part section (101) include pile sinking slip casting chamber (101b) of a closed chamber structure at least, slip casting nest of tubes includes lateral wall pile sinking slip casting pipe (3), the export of lateral wall pile sinking slip casting pipe (3) penetrates in pile sinking slip casting chamber (101b), a plurality of one-way shotcrete pipe (6) that have the check valve are installed to main part section (101) lateral wall, and a plurality of one-way shotcrete pipe (6) encircle main part section (101) lateral wall and distribute, the export of one-way shotcrete pipe (6) exposes, the import and pile sinking slip casting chamber (101b) switch-on of one-way shotcrete pipe (6).

2. A stock static pile according to claim 1, characterised in that: the side wall of the main body section (101) is provided with a plurality of protection pieces (5) used for protecting outlets of the unidirectional guniting pipes (6), and the protection pieces (5) correspond to the unidirectional guniting pipes (6) one by one.

3. A stock static pile according to claim 2, characterised in that: each protection piece (5) is arranged at a position right below the corresponding one-way guniting pipe (6) and covers the outlet of the one-way guniting pipe (6), and the protection pieces (5) are arranged in an upward inclined angle steel structure.

4. A stock static pile according to claim 2, characterised in that: the plurality of unidirectional guniting pipes (6) are uniformly distributed around the side wall of the main body section (101).

5. A stock static pile according to claim 1, characterised in that: the connecting part of the main body section (101) and the grouting section (103) is a variable diameter pipe section (102), and the variable diameter pipe section (102) is of a conical pipe section structure with a large upper end and a small lower end.

6. A stock static pile according to claim 1, characterised in that: the one-way guniting pipe (6) is detachably arranged on the side wall of the main body section (101).

7. A rockshaft static pile according to claim 6, wherein: each one-way guniting pipe (6) is provided with a set of fastening components, and the one-way guniting pipes (6) are detachably mounted on the side wall of the main body section (101) through the fastening components.

8. A rockshaft static pile according to any one of claims 1 to 7, wherein: two steel sheet (104) are kept apart to pile body (1) inner chamber installation, and two steel sheet (104) are kept apart for pile body (1) inner chamber for isolated epicoele (101a), pile sinking slip casting chamber (101b), slip casting section (103) inner chamber each other, epicoele (101a), pile sinking slip casting chamber (101b), slip casting section (103) inner chamber from the top down arrange in proper order, epicoele (101a) are directly over pile sinking slip casting chamber (101b) and together constitute the inner chamber of main part section (101) with pile sinking slip casting chamber (101b), epicoele (101a), slip casting section (103) inner chamber are closed cavity structure, the slip casting nest of tubes includes pile body slip casting pipe (2), pile tip slip casting pipe (4), pile body slip casting pipe (2), pile tip slip casting pipe (4) penetrate in epicoele (101a), slip casting section (103) inner chamber respectively.

Technical Field

The invention relates to the technical field of geotechnical engineering, in particular to an anchor rod static pressure pile.

Background

The sandy soil and the silty soil, particularly the medium-density and dense-shaped sandy soil and the silty soil have good stratum soil engineering performance, but the prior pile sinking construction operation is difficult, the pile sinking efficiency is low, the pile pressing counterforce is large, and the requirements on pile sinking machinery, constructors and pile sinking process technology are high.

Disclosure of Invention

The invention aims to provide a static pressure pile of an anchor rod, which aims to solve the construction problems of difficult pile sinking, low operation efficiency and the like when the original static pressure pile of the anchor rod is sunk into a stratum (medium-density-compact sand and silty soil) with larger dynamic resistance.

The purpose of the invention is realized as follows: the utility model provides an anchor rod static pressure pile, includes slip casting nest of tubes, pile body, the pile body sets up to vertical tubular pile structure, the pile body includes the main part section and is in the slip casting section of main part section lower extreme, the slip casting nest of tubes inserts the pile body vertically from the pile body upper end and is used for the slip casting of pile body inner chamber, the main part section includes the immersed pile grouting cavity of a closed cavity structure at least, the slip casting nest of tubes includes lateral wall immersed pile slip casting pipe, the export of lateral wall immersed pile slip casting pipe penetrates immersed pile slip casting intracavity, a plurality of one-way shotcrete pipes that have the check valve are installed to the main part section lateral wall, and a plurality of one-way shotcrete pipes encircle main part section lateral wall and distribute, the export of one-way shotcrete pipe exposes, the import and the immersed pile slip casting cavity switch-on of one.

Furthermore, a plurality of protection pieces used for protecting outlets of the one-way guniting pipes are mounted on the side wall of the main body section, and the protection pieces correspond to the one-way guniting pipes one by one.

Further, each protection piece is arranged at a position right below the corresponding one-way guniting pipe and covers the outlet of the one-way guniting pipe, and the protection pieces are arranged in an angle steel structure which is inclined upwards.

Furthermore, a plurality of one-way guniting pipes are uniformly distributed around the side wall of the main body section.

Furthermore, the connecting part of the main body section and the grouting section is a reducing pipe section, and the reducing pipe section is of a conical pipe section structure with a large upper end and a small lower end.

Further, the one-way guniting pipe is detachably mounted on the side wall of the main body section.

Furthermore, each one-way guniting pipe is provided with a set of fastening components, and the one-way guniting pipes are detachably mounted on the side wall of the main body section through the fastening components.

Further, two division steel boards are installed to the pile body inner chamber, and two division steel boards separate the pile body inner chamber for isolated epicoele, pile sinking slip casting chamber, slip casting section inner chamber each other, epicoele, pile sinking slip casting chamber, slip casting section inner chamber from the top down arrange in proper order, the epicoele is directly over the pile sinking slip casting chamber and together constitutes the inner chamber of main part section with pile sinking slip casting chamber, epicoele, slip casting section inner chamber are closed cavity structure, the slip casting nest of tubes includes pile body slip casting pipe, pile tip slip casting pipe penetrates respectively in epicoele, slip casting section inner chamber.

The invention has the beneficial effects that:

1) when pile driving operation is carried out, if large pile driving dynamic resistance is met, grouting is carried out in a pile driving grouting cavity through a side wall pile driving grouting pipe, so that slurry with certain pressure flows out of the inner wall of a pile hole through a one-way grouting pipe, a lubricating effect is generated, the pile driving dynamic resistance during pile driving can be reduced, the pile driving process can be smoothly carried out, the pile driving operation efficiency is improved, the pile driving construction cost is reduced, and the design requirements can be well met;

2) the pile driving resistance can be further reduced due to the arrangement of the reducing pipe sections;

3) the protection piece for protecting the one-way guniting pipe is arranged, so that the mutual interference between the outlet of the one-way guniting pipe and the inner wall of the pile hole during pile pressing can be avoided, the one-way guniting pipe is prevented from being damaged, the protection piece is arranged to be of an upward inclined angle steel structure, the friction effect between the protection piece and the inner wall of the pile hole can be reduced, and the protection piece can play a role in pulling resistance when a pile body is anchored;

4) the unidirectional guniting pipe is detachably arranged on the side wall of the main body section, so that the unidirectional guniting pipe is convenient to disassemble and assemble, and the unidirectional guniting pipe is provided with a one-way valve, so that the phenomenon of reverse flow can be prevented when the unidirectional guniting pipe is used for grouting outwards;

5) generally, the invention is convenient for construction, strong in operability and convenient for repeated utilization.

Drawings

Fig. 1 is a main set-up diagram of the present invention.

Fig. 2 is a sectional view a-a in fig. 1.

Fig. 3 is an enlarged view of a portion B in fig. 2.

In the figure, 1 pile body, 101 main body section, 101a upper cavity, 101b pile sinking grouting cavity, 102 reducing pipe section, 103 grouting section, 104 isolation steel plate, 2 pile body grouting pipe, 3 side wall pile sinking grouting pipe, 4 pile end grouting pipe, 5 protection piece, 6 one-way grouting pipe, 7 fixing nut, 8 steel sheet gasket and 9 rubber gasket.

Detailed Description

The invention is further described with reference to the following figures and specific examples.

As shown in fig. 1-3, an anchor static pressure pile comprises a grouting pipe set and a steel pile body 1, wherein the pile body 1 is arranged in a vertical pipe pile structure, the pile body 1 comprises a main body section 101 and a grouting section 103 arranged at the lower end of the main body section 101, the lower end of the grouting section 103 is in a sharp-pointed structure so as to be inserted into the ground during pile pressing, the grouting pipe set is vertically inserted into the pile body 1 from the upper end of the pile body 1 and is used for grouting the inner cavity of the pile body 1, the main body section 101 at least comprises a pile sinking grouting cavity 101b of a closed cavity structure, the grouting pipe set comprises a side wall pile sinking grouting pipe 3, the outlet of the side wall pile sinking grouting pipe 3 penetrates into the pile sinking grouting cavity 101b, a plurality of one-way grouting pipes 6 with one-way valves are arranged on the side wall of the main body section 101, the phenomenon of the one-way grouting pipes 6 during outward grouting can be prevented, the plurality of one-way grouting pipes 6 are distributed around the side wall, the inlet of the unidirectional guniting pipe 6 is communicated with the pile sinking grouting cavity 101 b.

Two isolation steel plates 104 are installed in the inner cavity of the pile body 1, the inner cavity of the pile body 1 is divided into an upper cavity 101a, a pile sinking grouting cavity 101b and a grouting section 103 which are isolated from each other by the two isolation steel plates 104, the upper cavity 101a, the pile sinking grouting cavity 101b and the grouting section 103 are sequentially arranged from top to bottom, the upper cavity 101a is positioned right above the pile sinking grouting cavity 101b and forms an inner cavity of the main body section 101 together with the pile sinking grouting cavity 101b, the upper cavity 101a and the grouting section 103 are both in a closed cavity structure, the grouting pipe group comprises a pile body grouting pipe 2 and a pile end grouting pipe 4, and the pile body grouting pipe 2 and the pile end grouting pipe 4 respectively penetrate into the upper cavity 101a and the grouting section 103.

When carrying out the pile pressing operation, if meet great pile pressing and move the resistance, then through the slip casting of lateral wall pile sinking slip casting pipe 3 in to pile sinking slip casting chamber 101b for the slurry that has certain pressure flows out on the stake downthehole wall through one-way shotcrete pipe 6, thereby produces lubricated effect, and the pile pressing when reducing the pile sinking moves the resistance.

The side wall of the main body section 101 is provided with a plurality of protection pieces 5 for protecting the outlets of the unidirectional guniting pipes 6, and the protection pieces 5 correspond to the unidirectional guniting pipes 6 one by one. Due to the arrangement of the protection piece 5 for protecting the one-way guniting pipe 6, the mutual interference between the outlet of the one-way guniting pipe 6 and the inner wall of a pile hole during pile pressing can be avoided, so that the one-way guniting pipe 6 is prevented from being damaged.

Each of the shielding members 5 is located at a position right under the corresponding one-way shotcrete pipe 6 and covers an outlet of the one-way shotcrete pipe 6, and the shielding members 5 are arranged in an upwardly inclined angle structure. Not only can the friction action between the protection piece 5 and the inner wall of the pile hole be reduced, but also the protection piece 5 can play a pull-out resistance action when the pile body 1 is anchored.

A plurality of unidirectional guniting pipes 6 are uniformly distributed around the side wall of the main body section 101. So that the lubrication is more uniform and the inner wall of the pile hole can be lubricated.

The connecting part of the main body section 101 and the grouting section 103 is provided with a reducing pipe section 102, and the reducing pipe section 102 is provided with a conical pipe section structure with a large upper end and a small lower end. The pile-pressing dynamic resistance during pile sinking can be further reduced.

The above-mentioned one-way guniting pipe 6 is detachably mounted on the side wall of the main body section 101.

As shown in fig. 2 and 3, each unidirectional guniting pipe 6 is provided with a set of fastening components, and the unidirectional guniting pipe 6 is detachably mounted on the side wall of the main body section 101 through the fastening components; the fastening assembly comprises a fixing nut 7, a steel disc gasket 8 and a rubber gasket 9, the unidirectional guniting pipe 6 penetrates through the outer wall of the main body section 101 in a threaded connection mode, the outer wall of the unidirectional guniting pipe 6 is of an external thread structure, the fixing nut 7 is sleeved on the exposed section of the unidirectional guniting pipe 6, the unidirectional guniting pipe 6 is fastened by the fixing nut 7, the steel disc gasket 8 and the rubber gasket 9 are both sleeved on the exposed section of the unidirectional guniting pipe 6, when the unidirectional guniting pipe 6 is fastened by the fixing nut 7, the fixing nut 7 presses the steel disc gasket 8 and the rubber gasket 9 on the outer wall of the main body section 101, and the rubber gasket 9 is located between the steel disc gasket 8 and the outer wall of the main body section 101 so as to prevent hard-to-hard friction between the steel disc gasket 8 and the outer wall of the main.

While the preferred embodiments of the present invention have been described, those skilled in the art will appreciate that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined by the appended claims.