阅读说明：本技术 加固型抗浮锚杆施工结构及施工工艺 (Reinforced anti-floating anchor rod construction structure and construction process ) 是由 宋文华 郝兵须 任洪亮 邵海龙 王海新 杜立新 于 2020-07-09 设计创作，主要内容包括：本发明公开了加固型抗浮锚杆施工结构及施工工艺,解决了现有的锚杆的扩头长度有限且不利于在富水条件下使用的问题,本发明包括外管和设置在所述外管中的芯柱,所述芯柱包括中心柱和多个侧柱,所述外管的内腔中设置有定位板,所述定位板上设置有通孔,所述芯柱穿过所述定位板,防止芯柱晃动,所述中心柱的下方设置有挡板和底板,所述底板位于所述中心柱的底端,所述挡板位于所述底板的上方,所述侧柱的下端铰接有扩头杆,多个所述扩头杆通过连接件连接,所述扩头杆的下端与所述挡板的边沿接触,所述外管的下端设置有槽体,所述扩头杆可从所述槽体中展开。本发明具有锚杆内部扩展对操作空间要求小,且在富水条件下也能长期保持高抗拉拔性等优点。(The invention discloses a construction structure and a construction process of a reinforced anti-floating anchor rod, which solve the problems that the existing anchor rod has limited expanding length and is not beneficial to use under the condition of rich water, and comprises an outer pipe and a core column arranged in the outer pipe, the core column comprises a central column and a plurality of side columns, a positioning plate is arranged in the inner cavity of the outer tube, a through hole is arranged on the positioning plate, the core column penetrates through the positioning plate to prevent the core column from shaking, a baffle plate and a bottom plate are arranged below the core column, the bottom plate is positioned at the bottom end of the central column, the baffle plate is positioned above the bottom plate, the lower end of the side column is hinged with a head expanding rod, the head expanding rods are connected through a connecting piece, the lower end of the head expanding rod is in contact with the edge of the baffle, the lower end of the outer pipe is provided with a groove body, and the head expanding rod can be unfolded from the groove body. The invention has the advantages that the requirement of the expansion inside the anchor rod on the operation space is low, and the high drawing resistance can be kept for a long time under the condition of rich water, and the like.)

1. The reinforced anti-floating anchor rod construction structure is characterized by comprising an outer pipe (1) and a core column arranged in the outer pipe (1), wherein the core column comprises a center column (2) and a plurality of side columns (3), a positioning plate (4) is arranged in an inner cavity of the outer pipe (1), a through hole is formed in the positioning plate (4), the core column penetrates through the positioning plate (4) to prevent the core column from shaking, a baffle plate (5) and a bottom plate (6) are arranged below the center column (2), the bottom plate (6) is positioned at the bottom end of the center column (2), the baffle plate (5) is positioned above the bottom plate (6), the lower end of the side column (3) is hinged with a head expanding rod (7), the head expanding rods (7) are connected through a connecting piece (8), the lower end of the head expanding rod (7) is in contact with the edge of the baffle plate (5), a groove body (9) is arranged at the lower end of the outer pipe (1), the flaring rod (7) can be unfolded from the groove body (9).

2. The construction structure of the reinforced anti-floating anchor rod according to claim 1, wherein the edge of the baffle (5) is provided with a second groove (10), and the flaring rod (7) is correspondingly limited in the second groove (10).

3. The reinforced anti-floating anchor rod construction structure as claimed in claim 1 or 2, wherein a column sleeve (11) is arranged outside the central column (2), the column sleeve (11) is in threaded connection with the central column (2), the baffle plate (5) is arranged at the bottom of the column sleeve (11), the central column (2) is rotated, and the column sleeve (11) can move up and down along the central column (2).

4. The construction structure of the reinforced anti-floating anchor according to claim 1 or 2, wherein the lower end of the outer pipe (1) is provided with a step (100), and the baffle (5) has a diameter greater than the inner diameter of the outer pipe (1) and smaller than the outer diameter of the outer pipe (1).

5. The construction structure of the reinforced anti-floating anchor rod according to claim 1, wherein a water stop rubber is provided on the enlarged head rod (7).

6. The construction process of the reinforced anti-floating anchor rod construction structure, which is characterized in that the construction of the reinforced anti-floating anchor rod construction structure according to any one of claims 1 to 5, comprises the following steps:

step 1: firstly drilling a T-shaped anchor hole (13) and arranging a first groove (14) capable of accommodating the bottom plate (6) in a horizontal cavity of the T-shaped anchor hole (13);

step 2: -inserting the anchor rod into the anchor hole (13) and letting the bottom plate (6) rest in said first recess (14);

and step 3: applying pressure to the side columns (3) by using the sleeve, so that the side columns (3) move downwards and are gradually expanded outwards of the outer pipe (1) under the supporting action of the baffle (5);

and 4, step 4: after the expanding structure is expanded, rotating the column sleeve (11) to enable the column sleeve (11) to drive the baffle (5) to move upwards until the side column (3) is contacted with the top of the groove body (9);

and 5: injecting paddles outside the outer pipe (1);

step 6: embedding a reinforcing rib (12) into the gap of the inner cavity of the outer pipe (1);

and 7: the anchor rods are connected to the floor (6) of the building.

Technical Field

The invention relates to the technical field of building anchoring, in particular to a construction structure and a construction process of a reinforced anti-floating anchor rod.

Background

Along with the reduction of urban construction land, people are more and more applied to low areas, such as subways, low garages, underground shopping malls and the like, and when underground construction is carried out, the problem of anchoring of a building is often met, the anchoring is an important link of building stability, the stability of the anchor rod directly influences the stability of the whole building, and especially for some water-rich underground environments, the requirements on the structure and the stability of the anchor rod are higher.

The existing anchor rod mostly adopts a head-expanding anchor rod to increase the stability of the anchor rod and a foundation, in the existing head-expanding structure, the length of the head-expanding is limited, and in a water-rich area, the anchor rod is easy to be wetted for a long time to influence the strength of the anchor rod, so that the structure and the construction method of the anchor rod need to be further improved, and the anchoring property of the anchor rod needs to be further improved.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the existing anchor rod has limited expanding head length and is not beneficial to being used under the condition of rich water.

The invention is realized by the following technical scheme:

reinforced anti-floating anchor rod construction structures, be in including outer tube and setting stem in the outer tube, the stem includes center post and a plurality of side post, be provided with the locating plate in the inner chamber of outer tube, be provided with the through-hole on the locating plate, the stem passes the locating plate prevents that the stem from rocking, the below of center post is provided with baffle and bottom plate, the bottom plate is located the bottom of center post, the baffle is located the top of bottom plate, the lower extreme of side post articulates there is the flaring pole, and is a plurality of the flaring pole passes through the connecting piece and connects, the lower extreme of flaring pole with the border contact of baffle, the lower extreme of outer tube is provided with the cell body, the flaring pole can follow expand in the cell body.

The design principle of the invention is as follows: through set up the structure of expanding the head in the stock inside, when reacing the stock hole bottom, open the structure of expanding the head from the stock inside, can reduce the operating space in stock hole like this, can do the extension portion of expanding the head longer moreover, increase the tensile resistance of pulling out of stock, in order to expand the head smoothly, set up the cell body at the lower extreme of outer tube, be convenient for expand the head pole and stretch out the outer tube and expand.

According to the preferable reinforced anti-floating anchor rod construction structure, the second groove is formed in the edge of the baffle, and the expanding head rod is correspondingly limited in the second groove.

Therefore, in the process that the side column moves downwards, the expanding head rod can extend towards the outer part of the outer pipe along the second groove to open the expanding head structure, and the deviation generated in the downward moving process can be effectively prevented.

According to the preferable reinforced anti-floating anchor rod construction structure, the post sleeve is arranged outside the central post and is in threaded connection with the central post, the baffle plate is arranged at the bottom of the post sleeve, the central post is rotated, and the post sleeve can move up and down along the central post.

After the head expanding rod is unfolded, the column sleeve is rotated to move upwards so as to drive the baffle to move upwards until the baffle abuts against the upper edge of the groove body.

According to the preferable reinforced anti-floating anchor rod construction structure, the lower end of the outer pipe is provided with the step, and the diameter of the baffle is larger than the inner diameter of the outer pipe and smaller than the outer diameter of the outer pipe.

The size of the baffle plate is set so that the baffle plate can be limited at the step in the process of moving upwards along with the column sleeve.

According to the preferable reinforced anti-floating anchor rod construction structure, the head expanding rod is provided with the water stopping rubber sleeve in a sleeved mode.

The anchor reinforcing part of the anchor rod structure is just in the expanding structure, when the underground environment is a water-rich environment, if the anchor rod and the inner core column are in a wet environment for a long time, the anchor rod and the inner core column can be corroded, and the anti-pulling performance of the anchor rod is weakened.

The construction process of the reinforced anti-floating anchor rod construction structure comprises the following steps:

step 1: firstly, drilling a T-shaped anchor hole, and arranging a first groove capable of accommodating a bottom plate in a horizontal cavity of the T-shaped anchor hole;

step 2: inserting an anchor rod into the anchor hole and placing the base plate in the first groove;

and step 3: applying pressure to the side columns by using the sleeves, so that the side columns move downwards and extend outwards of the outer pipes to be gradually expanded under the supporting action of the baffle plates;

and 4, step 4: after the expanding structure is expanded, the column sleeve is rotated, so that the column sleeve drives the baffle to move upwards until the side column is contacted with the top of the groove body.

And 5: injecting paddles outside the outer pipe;

step 6: embedding reinforcing ribs into the gaps of the inner cavity of the outer pipe;

and 7: the anchor rods are connected with the bottom plate of the building.

During construction, the anchor hole comprises a T-shaped groove, the large end of the T-shaped groove is used for accommodating an expanded expanding head structure, the large end is also provided with a first groove, the first groove is used for accommodating a bottom plate, the bottom plate, a groove body and an external anchor hole are communicated according to the above description before grouting, and a baffle and an expanding rod block an inner cavity of an outer pipe, so that slurry can enter the bottom of the outer pipe along the groove body and fill the first groove, the bottom plate is compacted in the first groove to play a role of primary anchoring reinforcement, the expanding rod is submerged as the slurry gradually rises, the expanding rod plays a role of secondary anchoring reinforcement, the whole anchor hole is finally filled, and the reinforcing rib is further embedded into the inner cavity of the outer pipe to further improve the strength of the anchor rod.

In a water-rich environment, the water-stopping rubber is sleeved on the head expanding rod, so that the water-stopping rubber can expand in a water environment to block a gap between the head expanding rod and the top of the groove body, water is prevented from entering the upper end of the inner cavity of the outer pipe from the groove body, the reinforcing ribs and the core column are prevented from being corroded, the damage effect of water on the anchor rod is reduced, and the long-term effectiveness of the anchor rod is maintained.

Compared with the prior art, the invention has the following advantages and beneficial effects:

1. the structure of the invention comprises a primary reinforced anchoring structure formed by the bottom plate and a secondary reinforced anchoring structure formed by the head expanding rod, and after grouting, the anchoring reinforcing structure and slurry are integrated into a whole, so that the anti-pulling performance of the anchor rod is better.

2. The water-stopping rubber is sleeved on the flaring rod, the gap between the groove body of the outer pipe and the flaring rod is sealed by the water-stopping rubber, and when water is met, the sealing performance is further improved, so that water cannot enter the upper part of the inner cavity of the outer pipe, the corrosion of the water to the hinging part of the flaring rod, the reinforcing rib and the upper core column is reduced, and the stability of the anchor rod is ensured.

3. The expanding head structure is developed from the lower part in the anchor rod, and the required expanding operation space is small.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

fig. 1 is a schematic view of a bolt structure before the enlarged head structure of the present invention is developed.

Fig. 2 is a schematic view of the anchor structure after the enlarged head structure of the present invention is deployed.

Fig. 3 is a schematic view of the anchor rod structure after the flaring rod reaches the top of the groove body.

Fig. 4 is a schematic view of the anchor rod of the present invention after it has been anchored.

Fig. 5 is a schematic structural view of the outer tube of the present invention.

Reference numbers and corresponding part names in the drawings:

1-outer tube, 100-step, 2-central column, 3-side column, 4-positioning plate, 5-baffle, 6-bottom plate, 7-flaring rod, 70-second through hole, 8-connecting piece, 9-groove body, 10-second groove, 11-column sleeve, 12-reinforcing rib, 13-anchor hole and 14-first groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.