CN108222021A - It is a kind of for soil nailing device of deep foundation pit support and preparation method thereof - Google Patents
It is a kind of for soil nailing device of deep foundation pit support and preparation method thereof Download PDFInfo
- Publication number
- CN108222021A CN108222021A CN201810168107.5A CN201810168107A CN108222021A CN 108222021 A CN108222021 A CN 108222021A CN 201810168107 A CN201810168107 A CN 201810168107A CN 108222021 A CN108222021 A CN 108222021A
- Authority
- CN
- China
- Prior art keywords
- soil nailing
- main reinforcement
- foundation pit
- steel bar
- soil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000002689 soil Substances 0.000 title claims abstract description 121
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 230000002787 reinforcement Effects 0.000 claims abstract description 58
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 39
- 239000010959 steel Substances 0.000 claims abstract description 39
- 230000003014 reinforcing effect Effects 0.000 claims description 22
- 238000003466 welding Methods 0.000 claims description 6
- 230000013632 homeostatic process Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 12
- 238000009412 basement excavation Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F45/00—Wire-working in the manufacture of other particular articles
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Foundations (AREA)
Abstract
The present invention relates to a kind of for soil nailing device of deep foundation pit support and preparation method thereof.Described device includes soil nailing main reinforcement and the multiple stent groups being set to along its length in soil nailing main reinforcement；Wherein, each stent group includes three Steel bar racks；Three Steel bar racks are along the circumferential direction evenly arranged in soil nailing main reinforcement；Also, each Steel bar rack includes an arc section, and one end of arc section is provided with the first flat segments, the other end of arc section is provided with the second flat segments；First flat segments and the second flat segments are connected with soil nailing main reinforcement so that the angle in each stent group between two neighboring Steel bar rack is 120 °.The present invention's designs for the soil nailing device combination deep pit digging feature of deep foundation pit support, it can be compared with the disturbance reduced to the soil body of limits, in the case where not destroying soil structures, improve the mechanical property of slope soil, the globality of slope soil and homeostasis ability are improved, side slope is made more to stablize.
Description
Technical field
The present invention relates to architectural engineering correlative technology fields, are further to be related in a kind of deep pit construction deep base
The device that hole supporting uses, concretely relates to a kind of for soil nailing device of deep foundation pit support and preparation method thereof.
Background technology
With the development of economy and society, skyscraper is rapidly growing, which promote the development of Base hole supporting technology.Deep basal pit
Though it is provisional, if rational support system is not used to be likely to result in serious consequence.
In foundation pit construction, if foundation pit supporting method is improper or disorderly uses suspension device, it will cause resistance to shear of soil, by force
Degree, which drastically reduces, makes excavation slope that local failure or overall collapse occur, sliding, supporting construction inclination, collapse, and causes serious work
Journey damage sequence and massive losses.
Therefore, have great importance to the R ＆ D design of deep pit support protection unit to the construction of architectural engineering.
Invention content
For the deficiency of the prior art, the present invention provides a kind of for the soil nailing device of deep foundation pit support and its preparation side
Method.
The technical solution of the soil nailing device for deep foundation pit support of the present invention is as follows：
A kind of soil nailing device for deep foundation pit support is set to including soil nailing main reinforcement and along its length the soil nailing
Multiple stent groups in main reinforcement；Wherein, each stent group includes three Steel bar racks；Three Steel bar racks are circumferentially
Direction is evenly arranged in the soil nailing main reinforcement；Also, each Steel bar rack includes an arc section, in the circular arc
One end of section is provided with the first flat segments, and the other end of the arc section is provided with the second flat segments；First flat segments
It is connected with second flat segments with the soil nailing main reinforcement so that the two neighboring Steel bar rack in each stent group
Between angle be 120 °.
The soil nailing device for deep foundation pit support of the present invention is multiple by three reinforcement bar supports by being set in soil nailing main reinforcement
The stent group that frame is along the circumferential direction evenly connected in soil nailing main reinforcement and is formed so that of the invention for deep foundation pit support
Soil nailing apparatus structure is stable and firm, and by stress when deforms small, forms soil nailing complex, significantly improves side slope overall stability and hold
By the ability of slope load；And production method is easy, and reinforcing bar soil nailing nail length is generally smaller than the length of anchor pole, does not need to plus pre-
Stress, therefore the equipment used is simple；It, can be compared with limits and when carrying out deep foundation pit support using the soil nailing device of the present invention
The disturbance reduced to the soil body, in the case where not destroying soil structures, improve the mechanical property of slope soil, improve side slope
The globality of the soil body and homeostasis ability make side slope more stablize.
According to a preferred embodiment, the soil nailing main reinforcement is the HRB500 reinforcing bars of diameter 20-30mm.
According to a preferred embodiment, the length of the soil nailing main reinforcement is 5-10 meters.
According to a preferred embodiment, the spacing between the two neighboring stent group is 10-100mm.
According to a preferred embodiment, arc section arc top and the axis of the soil nailing main reinforcement in each Steel bar rack
The distance of line is 30-70mm.
According to a preferred embodiment, first flat segments and second flat segments are in a manner of two-sided welding
It is welded in the soil nailing main reinforcement.
According to a preferred embodiment, the first flat segments described in each Steel bar rack and described second straight
The length of section is 30-70mm, and the arc length of the arc section is 300-500mm.
According to a preferred embodiment, each Steel bar rack by the HRB500 reinforcing bars of diameter 10-20mm with
Integrally formed mode is made.
The present invention also provides a kind of preparation method of the above-mentioned soil nailing device for deep foundation pit support, the preparation methods
Include the following steps：
S1：It will be cut into pieces for making the reinforcing bar of soil nailing main reinforcement by bar cropper；
S2：It will be cut into pieces for making the reinforcing bar of Steel bar rack by bar cropper；
S3：Its middle part is bent into arc-shaped, shape by the reinforcing bar being cut into pieces in the step S2 by angle-bender
Into arc section；And reserve one section and straightening respectively at the arc section both ends, form the first flat segments at the arc section both ends
With the second flat segments；
S4：The Steel bar rack for three being completed the step S3 is circumferentially fixed to soil nailing main reinforcement made of the step S1
On, form stent group；And the angle in same stent group between the two neighboring Steel bar rack is 120 °；
S5：Repeating said steps S4 forms multiple stent groups in soil nailing main reinforcement.
Compared with prior art, it is of the invention to be had the advantages that for the soil nailing device of deep foundation pit support：
The soil nailing device for deep foundation pit support of the present invention is multiple by three reinforcement bar supports by being set in soil nailing main reinforcement
The stent group that frame is along the circumferential direction evenly connected in soil nailing main reinforcement and is formed so that of the invention for deep foundation pit support
Soil nailing device has the following advantages that：
1. the present invention's is stable and firm for the soil nailing apparatus structure of deep foundation pit support, by stress when deforms small, is formed native
Nail complex significantly improves side slope overall stability and bears the ability of slope load；
2. the soil nailing device simple structure for deep foundation pit support of the present invention, production method is easy, and reinforcing bar soil nailing is followed closely
Length is generally smaller than the length of anchor pole, does not need to Prestressing, therefore the equipment used is simple；
3. the soil nailing device for deep foundation pit support of the present invention can not be accounted for excavation of foundation pit successively excavation section by section operation
Or the separate operaton time is accounted for less, construction efficiency is high, and it is short to occupy the period；
4. by the soil nail wall cost formed for the soil nailing device of deep foundation pit support of the present invention compared with other supporting construction
It significantly reduces, saves construction cost；
5. the soil nailing device construction noise, with small vibration for deep foundation pit support of the present invention, does not influence surrounding enviroment, and
Place close to buildings is influenced small.
In conclusion the present invention's designs, energy for the soil nailing device combination deep pit digging feature of deep foundation pit support
Enough disturbances reduced to the soil body compared with limits in the case where not destroying soil structures, improve the mechanical property of slope soil
Can, the globality of slope soil and homeostasis ability are improved, side slope is made more to stablize.
Description of the drawings
Fig. 1 is structure diagram of the present invention for the soil nailing device of deep foundation pit support；
Fig. 2, Fig. 3 are use state diagram of the present invention for the soil nailing device of deep foundation pit support.
Reference numerals list
1- soil nailing main reinforcements
2- stent groups
21- Steel bar racks
211- arc sections
The first flat segments of 212-
The second flat segments of 213-
3- soil nailings hole
Specific embodiment
Being described in detail for the soil nailing device of deep foundation pit support to the present invention below in conjunction with the accompanying drawings.
Fig. 1, Fig. 2 shows a kind of preferred embodiment of the present invention for the soil nailing device of deep foundation pit support.
As shown in Figure 1 and Figure 2, a kind of soil nailing device for deep foundation pit support, including soil nailing main reinforcement 1 and multiple stents
Group 2.
Preferably, a diameter of 20-30mm may be used in soil nailing main reinforcement 1, length is made of 5-10 meters of reinforcing bar.It is further excellent
Choosing, soil nailing main reinforcement 1 is using a diameter of 25mm, the HRB500 reinforcing bars that length is 8 meters.
As shown in Figure 1, multiple stent groups 2 are set to along its length in soil nailing main reinforcement 1.
Preferably, it is 10-100mm along the spacing between the two neighboring stent group 2 of the length direction of soil nailing main reinforcement 1.Into
One step is preferred, is 50mm along the spacing between the two neighboring stent group 2 of the length direction of soil nailing main reinforcement 1.
As shown in Figure 1 and Figure 2, each stent group 2 includes three Steel bar racks 21.
As a preferred embodiment, each Steel bar rack 21 includes an arc section 211.And in arc section
211 one end is provided with the first flat segments 212, and the other end of arc section 211 is provided with the second flat segments 213.
Preferably, each Steel bar rack 21 can be made of the reinforcing bar of diameter 10-20mm in a manner of integrally formed.Into
One step is preferred, and each Steel bar rack 21 uses the HRB500 reinforcing bars of a diameter of 14mm by angle-bender to be integrally formed
Mode be made.
Wherein, the distance of the axis on the arc top and soil nailing main reinforcement 1 of arc section 211 is 30-70mm in each Steel bar rack 21.
Preferably, the distance of the axis on the arc top and soil nailing main reinforcement 1 of arc section 211 is 50mm in each Steel bar rack 21.
The arc length of arc section 211 is 300-500mm.Preferably, the arc length of arc section 211 is 400mm.
Wherein, the length of first flat segments 212 and the second flat segments 213 is 30-70mm in each Steel bar rack 21.It is preferred that
, the length of first flat segments 212 and the second flat segments 213 is 50mm in each Steel bar rack 21.
Three Steel bar racks 21 are along the circumferential direction evenly arranged in soil nailing main reinforcement 1.Specifically, in Steel bar rack 21
One flat segments 212 and the second flat segments 213 are connected with soil nailing main reinforcement 1 so that two neighboring Steel bar rack in each stent group 2
Angle between 21 is 120 °.
Preferably, first flat segments 212 and the second flat segments 213 are welded in a manner of two-sided welding in Steel bar rack 21
In soil nailing main reinforcement 1.
The preparation method of the soil nailing device for deep foundation pit support of the present invention is as follows：
S1. the reinforcement fabrication soil nailing main reinforcement of HRB500 diameters 25, after reinforcing bar is blocked using bar cropper, every are used
Reinforcing bar length is 8m, and reinforcing bar must not have breaking point, and two or more reinforcement weldings must not be used to form main reinforcement；
S2. using bar cropper by the bar cutting of HRB500 diameters 14, every reinforcing bar length is 500mm；
S3. soil nailing Steel bar rack is made, 14 reinforcing bar middle bent of diameter is formed into circle into arc-shaped using angle-bender
Segmental arc；Apart from soil nailing main reinforcement axis 50mm in the middle part of circular arc, 50mm straightening is respectively stayed at circular arc both ends, and it is flat to form first at arc section both ends
Straight section and the second flat segments；
S4. Steel bar rack is respectively welded in soil nailing main reinforcement, 3 reinforcement bar supports is welded on soil nailing main reinforcement section plane
Frame, angled is 120 ° of respectively arrangements, so as to form stent group in soil nailing main reinforcement；It should be welded during welding using two-sided welding mode
It connects；
S5. step S4 is repeated, multiple stent groups are formed in soil nailing main reinforcement；It is and two neighboring along soil nailing main reinforcement length direction
Spacing between the stent group that soil nailing stent is formed is 50mm.
The soil nailing device for deep foundation pit support of the present invention is multiple by three reinforcement bar supports by being set in soil nailing main reinforcement
The stent group that frame is along the circumferential direction evenly connected in soil nailing main reinforcement and is formed so that of the invention for deep foundation pit support
Soil nailing device has the following advantages that：
1. the present invention's is stable and firm for the soil nailing apparatus structure of deep foundation pit support, by stress when deforms small, is formed native
Nail complex significantly improves side slope overall stability and bears the ability of slope load；
2. the soil nailing device simple structure for deep foundation pit support of the present invention, production method is easy, and reinforcing bar soil nailing is followed closely
Length is generally smaller than the length of anchor pole, does not need to Prestressing, therefore the equipment used is simple；
3. the soil nailing device for deep foundation pit support of the present invention can not be accounted for excavation of foundation pit successively excavation section by section operation
Or the separate operaton time is accounted for less, construction efficiency is high, and it is short to occupy the period；
4. by the soil nail wall cost formed for the soil nailing device of deep foundation pit support of the present invention compared with other supporting construction
It significantly reduces, saves construction cost；
5. the soil nailing device construction noise, with small vibration for deep foundation pit support of the present invention, does not influence surrounding enviroment, and
Place close to buildings is influenced small.
In conclusion the present invention's designs, energy for the soil nailing device combination deep pit digging feature of deep foundation pit support
Enough disturbances reduced to the soil body compared with limits in the case where not destroying soil structures, improve the mechanical property of slope soil
Can, the globality of slope soil and homeostasis ability are improved, side slope is made more to stablize.
It should be noted that this specification disclosed in all features disclosed all methods or in the process the step of,
Other than mutually exclusive feature and/or step, it can combine in any way.
In addition, above-mentioned specific embodiment is exemplary, those skilled in the art can opening in the disclosure of invention
It gives and finds out various solutions, and these solutions also belong to disclosure of the invention range and fall into the protection of the present invention
Within the scope of.It will be understood by those skilled in the art that description of the invention and its attached drawing be it is illustrative and not form to power
The limitation of profit requirement.Protection scope of the present invention is limited by claim and its equivalent.
Claims (9)
1. a kind of soil nailing device for deep foundation pit support, which is characterized in that it includes soil nailing main reinforcement (1) and sets along its length
The multiple stent groups (2) being placed on the soil nailing main reinforcement (1)；
Wherein, each stent group (2) includes three Steel bar racks (21)；Three Steel bar racks (21) are along the circumferential direction
It is evenly arranged on the soil nailing main reinforcement (1)；
Also, each Steel bar rack (21) includes an arc section (211), is set in one end of the arc section (211)
There are the first flat segments (212), the other end of the arc section (211) is provided with the second flat segments (213)；
First flat segments (212) and second flat segments (213) are connected with the soil nailing main reinforcement (1) so that each
Angle in the stent group (2) between the two neighboring Steel bar rack (21) is 120 °.
2. the soil nailing device according to claim 1 for deep foundation pit support, which is characterized in that the soil nailing main reinforcement (1)
HRB500 reinforcing bars for diameter 20-30mm.
3. the soil nailing device according to claim 2 for deep foundation pit support, which is characterized in that the soil nailing main reinforcement (1)
Length be 5-10 meters.
4. the soil nailing device according to claim 1 for deep foundation pit support, which is characterized in that the two neighboring stent
Spacing between group (2) is 10-100mm.
5. the soil nailing device according to claim 1 for deep foundation pit support, which is characterized in that each Steel bar rack
(21) distance of arc section (211) arc top and the axis of the soil nailing main reinforcement (1) is 30-70mm in.
6. the soil nailing device according to claim 1 for deep foundation pit support, which is characterized in that first flat segments
(212) it is welded in a manner of two-sided welding on the soil nailing main reinforcement (1) with second flat segments (213).
7. the soil nailing device according to claim 1 for deep foundation pit support, which is characterized in that each Steel bar rack
(21) length of the first flat segments (212) described in and second flat segments (213) be 30-70mm, the arc section (211)
Arc length be 300-500mm.
8. the soil nailing device according to claim 1 for deep foundation pit support, which is characterized in that each Steel bar rack
(21) it is made in a manner of integrally formed of the HRB500 reinforcing bars of diameter 10-20mm.
9. the preparation method of the soil nailing device for deep foundation pit support as described in one of claim 1 to 8, which is characterized in that
It includes the following steps：
S1：It will be cut into pieces for making the reinforcing bar of soil nailing main reinforcement by bar cropper；
S2：It will be cut into pieces for making the reinforcing bar of Steel bar rack by bar cropper；
S3：Its middle part is bent into arc-shaped by angle-bender by the reinforcing bar being cut into pieces in the step S2, forms circle
Segmental arc；And reserve one section and straightening respectively at the arc section both ends, the first flat segments and the are formed at the arc section both ends
Two flat segments；
S4：The Steel bar rack for three being completed the step S3 is circumferentially fixed to made of the step S1 in soil nailing main reinforcement,
Form stent group；And the angle in same stent group between the two neighboring Steel bar rack is 120 °；
S5：Repeating said steps S4 forms multiple stent groups in soil nailing main reinforcement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810168107.5A CN108222021A (en) | 2018-02-28 | 2018-02-28 | It is a kind of for soil nailing device of deep foundation pit support and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810168107.5A CN108222021A (en) | 2018-02-28 | 2018-02-28 | It is a kind of for soil nailing device of deep foundation pit support and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108222021A true CN108222021A (en) | 2018-06-29 |
Family
ID=62662471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810168107.5A Pending CN108222021A (en) | 2018-02-28 | 2018-02-28 | It is a kind of for soil nailing device of deep foundation pit support and preparation method thereof |
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| Country | Link |
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| CN (1) | CN108222021A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201588214U (en) * | 2009-12-18 | 2010-09-22 | 中冶交通工程技术有限公司 | Grouting concrete soil nail |
| US20120005970A1 (en) * | 2010-07-06 | 2012-01-12 | Jaime Reyes | Guy anchor reinforcement |
| CN106320346A (en) * | 2016-08-24 | 2017-01-11 | 陕西建工第六建设集团有限公司 | Construction method for supporting deep foundation pit through grouting after pile arrangement and anchor cable mounting |
| CN106522235A (en) * | 2016-11-01 | 2017-03-22 | 中化二建集团有限公司 | Narrow site deep foundation pit excavation supporting construction method |
| CN206368367U (en) * | 2016-11-22 | 2017-08-01 | 北京市地质工程公司 | A kind of pattern foundation pit supporting structure soil nailing |
| CN208056071U (en) * | 2018-02-28 | 2018-11-06 | 中国五冶集团有限公司 | A kind of soil nailing device for deep foundation pit support |
-
2018
- 2018-02-28 CN CN201810168107.5A patent/CN108222021A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201588214U (en) * | 2009-12-18 | 2010-09-22 | 中冶交通工程技术有限公司 | Grouting concrete soil nail |
| US20120005970A1 (en) * | 2010-07-06 | 2012-01-12 | Jaime Reyes | Guy anchor reinforcement |
| CN106320346A (en) * | 2016-08-24 | 2017-01-11 | 陕西建工第六建设集团有限公司 | Construction method for supporting deep foundation pit through grouting after pile arrangement and anchor cable mounting |
| CN106522235A (en) * | 2016-11-01 | 2017-03-22 | 中化二建集团有限公司 | Narrow site deep foundation pit excavation supporting construction method |
| CN206368367U (en) * | 2016-11-22 | 2017-08-01 | 北京市地质工程公司 | A kind of pattern foundation pit supporting structure soil nailing |
| CN208056071U (en) * | 2018-02-28 | 2018-11-06 | 中国五冶集团有限公司 | A kind of soil nailing device for deep foundation pit support |
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Application publication date: 20180629 |
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