CN213979020U - Enlarged foundation with anchor rod - Google Patents
Enlarged foundation with anchor rod Download PDFInfo
- Publication number
- CN213979020U CN213979020U CN202022221694.5U CN202022221694U CN213979020U CN 213979020 U CN213979020 U CN 213979020U CN 202022221694 U CN202022221694 U CN 202022221694U CN 213979020 U CN213979020 U CN 213979020U
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- Prior art keywords
- foundation
- anchor
- enlarged
- anchor rods
- sleeve
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- 230000002787 reinforcement Effects 0.000 claims abstract description 19
- 239000011435 rock Substances 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000004873 anchoring Methods 0.000 claims description 5
- 239000011083 cement mortar Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 19
- 238000009412 basement excavation Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 4
- 238000007667 floating Methods 0.000 abstract description 4
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 239000004568 cement Substances 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
An enlarged foundation with an anchor rod relates to the technical field of constructional engineering. It comprises the following steps: set up the expansion foundation in the foundation ditch and concretize the pier stud on the expansion foundation, the expansion foundation includes: the reinforcement cage is arranged in the foundation pit, and the concrete body is filled in the foundation pit and the reinforcement cage; the enlarged foundation with the anchor rod further comprises: the sleeves penetrate through the concrete body, abut against the bottom of the foundation pit and are assembled with the reinforcement cage; and a plurality of anchor rods which are fixedly arranged in the sleeves and penetrate through the sleeves to be inserted into the rock body. By adopting the technical scheme, the advantages of expanding the foundation and resisting compression and pulling of the anti-floating anchor rod are integrated. On the premise of increasing the pulling resistance of the enlarged foundation, the volume of the enlarged foundation can be reduced, and the effects of reducing the workload of excavation and rock-entering construction cost are achieved.
Description
Technical Field
The utility model relates to a building engineering technical field, concretely relates to take expansion basis of stock.
Background
At present, in foundation construction of construction projects, an enlarged foundation is a common foundation form, the enlarged foundation is generally used for a construction area with better geological condition and higher rock surface elevation, the existing enlarged foundation has poor uplift resistance, an anti-floating anchor rod is generally required to be designed independently, and thus the construction speed is slow, the construction period is long, and the construction period is long
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to prior art's defect and not enough, provide a take expansion basis of stock, have that resistance to plucking nature is strong, construction speed is fast, construction cost is low advantage.
In order to achieve the above object, the utility model adopts the following technical scheme: an enlarged foundation with anchor rods, comprising: set up the expansion foundation in the foundation ditch and concretize the pier stud on the expansion foundation, the expansion foundation includes: the concrete reinforcement cage is arranged in a foundation pit, and the concrete body is filled in the foundation pit and the reinforcement cage; the enlarged foundation with the anchor rod further comprises: the sleeves penetrate through the concrete body, abut against the bottom of the foundation pit and are assembled with the reinforcement cage; and a plurality of anchor rods which are fixedly arranged in the sleeves and penetrate through the sleeves to be inserted into the rock body.
The sleeve and the anchor rod are perpendicular to the bottom of the foundation pit.
The sleeve pipe and the anchor rod are provided with a plurality of anchor rods, and the sleeve pipe and the anchor rod encircle the periphery of the pier stud is arranged at equal intervals on the expansion basis.
The foundation ditch bottom corresponds the sleeve pipe is provided with the anchor eye, the stock includes: the rod body penetrates through the sleeve and the anchor hole and is fixed at the bottom of the anchor hole; and the anchoring bodies are arranged in the sleeve and the anchoring holes.
The enlarged foundation with the anchor rod further comprises an anchorage device which is arranged in the sleeve and assembled with one end, close to the ground, of the rod body.
And a tensioning groove is formed in the concrete body along the periphery of the edge port end of the sleeve.
The anchoring body is made of pure cement slurry, cement mortar or fine aggregate concrete.
The rod body is a steel bar.
The sleeve is a steel pipe or a PVC pipe, and the inner diameter of the sleeve is 150-200 mm.
After the technical scheme is adopted, the utility model discloses beneficial effect does: during construction, after the foundation pit is excavated to the preset depth of the rock surface, the excavation is stopped, then the reinforcement cage and the embedded sleeve are placed, and concrete is poured to form an expanded foundation. And then carrying out anchor rod construction on the sleeve and the foundation resistance bottom. The advantages of enlarging the foundation and the anti-floating anchor rod are integrated: the foundation resists compression, and the anchor rod resists pulling. On the premise of increasing the pulling resistance of the enlarged foundation, the volume of the enlarged foundation can be reduced, and the effects of reducing the workload of excavation and rock-entering construction cost are achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is an enlarged view corresponding to detail a in fig. 1.
Description of reference numerals: 1. expanding the foundation; 2. pier studs; 3. a sleeve; 4. an anchor rod; 5. a rod body; 6. an anchor; 7. an anchorage device; a. and (5) stretching the groove.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment as required without making a contribution, but all the embodiments are protected by the patent law within the scope of the claims of the present invention.
The embodiment relates to an enlarged foundation with an anchor rod, as shown in fig. 1 and 2, comprising: enlarged basis 1, pier stud 2, sleeve pipe 3 and stock 4.
Wherein the enlarged foundation 1 is arranged in the foundation pit. The pier stud 2 is fixedly connected on the enlarged foundation 1. The enlarged base 1 includes: reinforcement cage and concrete body. The reinforcement cage sets up in the foundation ditch. And concrete is filled in the foundation pit and the reinforcement cage. The sleeve 3 penetrates through the concrete body and is abutted to the bottom of the foundation pit, and is assembled with the reinforcement cage. The anchor rods 4 are fixedly arranged in the sleeves 3 and penetrate through the sleeves 3 to be inserted into rock bodies. And the sleeve 3 and the anchor rod 4 are perpendicular to the bottom of the foundation pit. Through inserting sleeve pipe 3 and stock 4 in enlarged foundation 1, under the compressive action of enlarged foundation 1, increased the withdrawal resistance of enlarged foundation 1 to the effect of excavation income rock work load and income rock construction cost is reached to the accessible dwindles of enlarged foundation 1.
Preferably, the sleeve 3 and the anchor rod 4 are all provided with a plurality of, and it encircles the peripheral equidistance of pier stud 2 is laid on the expansion basis 1. In this embodiment, the sleeve 3 and the anchor rod 4 are correspondingly provided with two, and the two are symmetrically arranged on the enlarged foundation 1 and are positioned on two sides of the pier stud 2. In other embodiments, the set number of the anchor rods 4 and the sleeves 3 can be determined according to the area size of the enlarged foundation 1 and the requirement of the pulling resistance.
Preferably, the sleeve 3 is a steel pipe or a PVC pipe, in this embodiment, the sleeve 3 is a steel pipe, and the inner diameter thereof is 150 and 200 mm.
Further, the anchor 4 includes: a rod body 5 and an anchor 6. The bottom of the foundation pit is provided with an anchor hole corresponding to the sleeve 3, and the rod body 5 penetrates through the sleeve 3 and the anchor hole and is fixed at the bottom of the anchor hole. The anchor 6 is arranged in the sleeve 3 and the anchor hole.
Further, the enlarged foundation with anchor rods also comprises an anchor 7. An anchorage 7 is arranged in the sleeve 3 and assembled with one end of the rod body 5 close to the ground. And a tensioning groove a is formed in the concrete body along the periphery of the edge port end of the sleeve 3.
Preferably, the material of the anchor 6 is pure cement mortar, cement mortar or fine aggregate concrete. In this embodiment, the material of the anchor 6 is pure cement slurry. The rod body 5 is a steel bar and is a fine-rolled thread steel bar.
The construction process of the enlarged foundation with the anchor rod comprises the following steps:
s1, excavating a foundation pit: carrying out site leveling and axis lofting before excavation, then carrying out mechanical excavation, when about 20cm apart from the basement, changing into manual excavation, avoiding the overexcavation, and then carrying out foundation lofting.
S2, manufacturing and placing a reinforcement cage and a sleeve 3: after the reinforcement cage is manufactured, binding the sleeve 3 on a set position of the reinforcement cage, and sealing two ends of the sleeve 3 to prevent soil and concrete in the pile hole from entering; then the crane lays steel reinforcement cage and sleeve pipe 3 in the foundation ditch, and sleeve pipe 3 should guarantee when laying that sleeve pipe 3 is perpendicular with stake hole bottom, and the gradient deviation should be less than 0.5%.
And S3, installing the template.
And S4, manufacturing and pouring concrete.
S5, anchor rod 4 construction: and (3) drilling a drilling tool through the casing pipe 3 and into the bottom of the foundation pit to form an anchor hole, performing hole drying and hole cleaning operation, installing a rod body 5, grouting in the anchor hole and the casing pipe 3, constructing a pile head, and tensioning and locking the anchor rod 4 when cement paste reaches over 75 percent of designed strength to finally form the anchor.
S6, upper structure construction: the pier stud 2 structure construction should do protection work to stock 4 in the work progress to when carrying out electric welding, the operation of vibrating, pay attention to do not touch stock 4 as far as possible.
The working principle of the utility model is as follows: during construction, after the foundation pit is excavated to the preset depth of the rock surface, the excavation is stopped, then the reinforcement cage and the embedded sleeve 3 are placed, and concrete is poured to form the enlarged foundation 1. And then the anchor rod 4 is constructed on the sleeve 3 and the foundation resistance bottom. The advantages of compression resistance and pull-out resistance of the enlarged foundation 1 and the anti-floating anchor rod 4 are integrated. On the premise of increasing the uplift resistance of the enlarged foundation 1, the area of the enlarged foundation 1 can be reduced, and the effects of reducing the workload of excavation and rock-entering construction cost are achieved.
The above description is only for the purpose of illustration and not limitation, and other modifications or equivalent replacements made by those skilled in the art to the technical solution of the present invention should be covered by the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.
Claims (9)
1. An enlarged foundation with anchor rods, comprising: set up expansion basis (1) in the foundation ditch and concretize pier stud (2) on expansion basis (1), expansion basis (1) includes: the concrete reinforcement cage is arranged in a foundation pit, and the concrete body is filled in the foundation pit and the reinforcement cage; its characterized in that, take the enlarged basis of stock still includes: a plurality of sleeves (3) which penetrate through the concrete body, abut against the bottom of the foundation pit and are assembled with the reinforcement cage; and the number of the first and second groups,
and a plurality of anchor rods (4) which are fixedly arranged in the sleeves (3) and penetrate through the sleeves (3) to be inserted into the rock body.
2. The enlarged foundation with anchor rods of claim 1, wherein the sleeve (3) and the anchor rods (4) are perpendicular to the foundation pit bottom.
3. The enlarged foundation with anchor rods according to claim 2, characterized in that the sleeves (3) and the anchor rods (4) are provided in plural numbers and are arranged on the enlarged foundation (1) at equal intervals around the periphery of the pier stud (2).
4. The enlarged foundation with anchor rods according to claim 3, characterized in that the bottom of the foundation pit is provided with anchor holes corresponding to the sleeves (3), and the anchor rods (4) comprise:
the rod body (5) penetrates through the sleeve (3) and the anchor hole and is fixed at the bottom of the anchor hole; and the number of the first and second groups,
and the anchoring bodies (6) are arranged in the sleeve (3) and the anchoring holes.
5. The enlarged foundation with anchor rods according to claim 4, characterized in that it further comprises an anchor (7) arranged in the sleeve (3) and fitted to the end of the rod body (5) close to the ground.
6. The enlarged foundation with anchor rods of claim 5, characterized in that the concrete body is provided with tensioning grooves (a) along the perimeter of the rim end of the casing (3).
7. The enlarged foundation with anchor rods according to claim 4, characterized in that the material of the anchor bodies (6) is pure cement mortar, cement mortar or fine stone concrete.
8. An enlarged foundation with anchor rods according to claim 4, characterized in that the rods (5) are steel bars.
9. The enlarged footing with an anchor rod according to any one of claims 1-8, characterized in that said casing (3) is a steel or PVC pipe and has an inner diameter of 150-200 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022221694.5U CN213979020U (en) | 2020-09-30 | 2020-09-30 | Enlarged foundation with anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022221694.5U CN213979020U (en) | 2020-09-30 | 2020-09-30 | Enlarged foundation with anchor rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213979020U true CN213979020U (en) | 2021-08-17 |
Family
ID=77255547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022221694.5U Active CN213979020U (en) | 2020-09-30 | 2020-09-30 | Enlarged foundation with anchor rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213979020U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113957881A (en) * | 2021-11-11 | 2022-01-21 | 中铁大桥局武汉桥梁特种技术有限公司 | A construction method suitable for bridge foundation of mountain river rock layer |
-
2020
- 2020-09-30 CN CN202022221694.5U patent/CN213979020U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113957881A (en) * | 2021-11-11 | 2022-01-21 | 中铁大桥局武汉桥梁特种技术有限公司 | A construction method suitable for bridge foundation of mountain river rock layer |
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