CN216894416U - Shallow section miniature steel-pipe pile lattice beam device that buries in tunnel - Google Patents
Shallow section miniature steel-pipe pile lattice beam device that buries in tunnel Download PDFInfo
- Publication number
- CN216894416U CN216894416U CN202123042400.3U CN202123042400U CN216894416U CN 216894416 U CN216894416 U CN 216894416U CN 202123042400 U CN202123042400 U CN 202123042400U CN 216894416 U CN216894416 U CN 216894416U
- Authority
- CN
- China
- Prior art keywords
- tunnel
- lattice beam
- shallow
- micro
- hidden
- 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.)
- Active
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 29
- 239000010959 steel Substances 0.000 claims abstract description 29
- 230000002787 reinforcement Effects 0.000 claims description 23
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 239000011440 grout Substances 0.000 claims description 5
- 238000010276 construction Methods 0.000 abstract description 17
- 238000009825 accumulation Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 206010040007 Sense of oppression Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
The utility model provides a micro steel pipe pile lattice beam device for a shallow-buried section of a tunnel, which belongs to the field of tunnel supporting devices and comprises a concrete lattice beam, a plurality of micro piles and a primary supporting arch frame in a hidden hole, wherein the concrete lattice beam is arranged at the top end of a covering layer of a tunnel body of the shallow-buried section of the tunnel, the primary supporting arch frame in the hidden hole is arranged at the top end of the tunnel body of the shallow-buried section, one end of each of the plurality of micro piles is connected with the concrete lattice beam and penetrates through the covering layer of the tunnel body of the shallow-buried section of the tunnel to be connected with the primary supporting arch frame in the hidden hole. The earth surface protection micro-piles, the concrete lattice beams and the arch center in the hidden tunnel are connected to form a three-dimensional supporting system, and the pressure of primary support in the hidden tunnel is dispersed to bedrocks on two sides to form a stable stress system. The pressure of the primary support of the hidden tunnel is reduced, and the purpose of reducing the construction risk of the hidden tunnel is achieved. The micro pile lattice beam construction technical achievement is adopted to solve the geological hole digging problem of a shallow buried section accumulation body, a side slope and a heading slope do not need to be excavated to a large extent, original appearance can be protected, and task disturbance is not caused to nearby buildings.
Description
Technical Field
The utility model relates to the field of tunnel supporting devices, in particular to a micro steel pipe pile lattice beam device for a tunnel shallow buried section.
Background
The tunnel often can meet the shallow section construction of hole body when being under construction, and the shallow section geological conditions of burying of hole body is relatively poor, overburden thickness is minimum, and in the tunnel undercut work progress, very easily cause the shallow section of burying to cave in because of soil layer vibrations, consequently need secretly dig the earth's surface to the shallow section of burying of hole body before the shallow section of burying in the tunnel and consolidate to improve the stability of hole body overburden thickness and country rock structure, ensure construction safety. The common ground surface treatment methods are mainly divided into open cut methods and cover cut methods, which are all treatment methods outside the hole, but the construction method has a serious problem that various construction equipment and filling materials required by ground surface reinforcement need to be transported from the ground surface to a shallow buried section. Therefore, a better supporting device for the shallow-buried section of the tunnel needs to be designed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a micro steel pipe pile lattice beam device for a shallow-buried section of a tunnel, which solves the technical problems in the background technology.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
the miniature steel-pipe pile lattice beam device of the shallow section of burying in tunnel, including concrete lattice beam, a plurality of miniature piles and preliminary bracing bow member in the hidden hole, concrete lattice beam sets up the top at the shallow section of burying in tunnel body overburden, and preliminary bracing bow member setting is on the top in the shallow section of burying in tunnel in the hidden hole, and a plurality of miniature pile one end settings are connected at concrete lattice beam to pass the shallow section of burying in tunnel body overburden and be connected with the preliminary bracing bow member in the hidden hole.
Further, the micropile includes steel pipe, steel reinforcement cage and thick liquid, and the steel pipe setting is in vertical hole, and the steel reinforcement cage setting is in the steel pipe, and the thick liquid is filled in the steel pipe.
Furthermore, the steel reinforcement cage comprises three reinforcing bars, the three reinforcing bars are arranged at intervals, the three reinforcing bars are arranged into a tripod structure, and fixing bars are welded at intervals outside the tripod structure.
Further, the concrete lattice girder comprises vertical bars and horizontal bars, wherein the two vertical bars are arranged on a covering layer of the tunnel shallow-buried section, the directions of the two vertical bars are the same as the direction of the tunnel, the width of the two vertical bars is larger than that of the tunnel, the horizontal bars are arranged between the two vertical bars, and the miniature piles are connected to the horizontal bars and are integrally arranged with the horizontal bars.
Furthermore, the vertical bars and the transverse bars are both composed of concrete and lattice beam reinforcement cages, and the lattice beam reinforcement cages are welded with the reinforcement cages.
Due to the adoption of the technical scheme, the utility model has the following beneficial effects:
the utility model connects the earth surface protection micro-pile, the concrete lattice beam and the arch center in the hidden tunnel to form a three-dimensional supporting system, and disperses the pressure of primary support in the hidden tunnel to bedrocks on two sides to form a stable stress system. The pressure of the preliminary bracing of the hidden tunnel is reduced, and therefore the purpose of reducing the construction risk of the hidden tunnel is achieved. The project eight-hole tunnel adopts the micro pile lattice beam construction technical result to solve the problem of geological hole digging of a shallow buried section accumulation body, a side slope and a top slope do not need to be excavated by a large margin, original appearance can be protected, and task disturbance is not caused to nearby buildings.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a transverse cross-sectional view of a micropile of the present invention;
FIG. 3 is a schematic view of a vertical cross-section of a concrete grid and a micro-pile according to the present invention;
figure 4 is a plan view of a concrete grid according to the utility model.
In the attached figure, 1-concrete lattice beam, 1.1-lattice beam reinforcement cage, 1.2-welding spot, 1.3-vertical bar, 1.4-horizontal bar, 2-micro pile, 3-preliminary bracing arch centering in the hidden tunnel, 2.1-hole, 2.2-steel pipe, 2.3-reinforcement cage, 2.4-grout.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings by way of examples of preferred embodiments. It should be noted, however, that the numerous details set forth in the description are merely for the purpose of providing the reader with a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.
As shown in fig. 1-4, the micro steel pipe pile lattice beam device for the shallow-buried section of the tunnel comprises a concrete lattice beam 1, a plurality of micro piles 2 and a preliminary bracing arch 3 in a hidden tunnel, wherein the concrete lattice beam 1 is arranged at the top end of a covering layer of a tunnel body of the shallow-buried section of the tunnel, the preliminary bracing arch 3 in the hidden tunnel is arranged at the top end of the tunnel body of the shallow-buried section, one ends of the plurality of micro piles 2 are arranged on the concrete lattice beam 1 and connected with the preliminary bracing arch 3 in the hidden tunnel through the covering layer of the tunnel body of the shallow-buried section of the tunnel. The micro-piles 2 penetrate through the preliminary bracing arch 3 in the hidden tunnel by about 30 cm and are fixedly arranged by welding.
In the embodiment of the utility model, as shown in fig. 2, the micro pile 2 comprises a steel pipe 2.2, a reinforcement cage 2.3 and grout 2.4, the steel pipe 2.2 is arranged in the vertical hole 2.1, the reinforcement cage 2.3 is arranged in the steel pipe 2.2, and the grout 2.4 is filled in the steel pipe 2.2. The reinforcement cage 2.3 is composed of three reinforcements, the three reinforcements are arranged at intervals, the three reinforcements are arranged to be a tripod structure, and the fixing strips are welded at intervals outside the tripod structure. The micro-pile grouting is one of the most important processes of the construction method, and plays a decisive role in the treatment effect. The on-site slurry mixing ratio needs to be adjusted before grouting, and the water-cement ratio is determined by combining the porosity of loose bodies, grouting pressure and other comprehensive factors without uniform regulation. The grouting pressure is controlled to be 1.0-1.5 MPa, and the judgment of the grouting return of the hole wall at the orifice can be judged according to the condition that the grouting is finished by naked eyes. The grouting quality detection can adopt a core drilling method to core in the middle of two holes and check the slurry diffusion condition. The core drilling detection frequency is 100% of the total number of the micro-piles and is not less than 3 holes.
In the embodiment of the utility model, as shown in fig. 3-4, the concrete lattice beam 1 comprises vertical bars 1.3 and transverse bars 1.4, two vertical bars 1.3 are arranged on a covering layer of a shallow buried section of a tunnel, the direction of the two vertical bars 1.3 is the same as that of the tunnel, the width of the two vertical bars 1.3 is larger than that of the tunnel, a plurality of transverse bars 1.4 are arranged between the two vertical bars 1.3, and a plurality of micro-piles 2 are connected to the transverse bars 1.4 and are integrally arranged with the transverse bars 1.4. Vertical bar 1.3 and horizontal bar 1.4 all comprise concrete and lattice beam steel reinforcement cage 1.1, and lattice beam steel reinforcement cage 1.1 and steel reinforcement cage 2.3 welded connection. Lattice beam construction, the sash roof beam is if use the slope lattice beam size of roadbed to use the stock point to lead to the fact the construction inconvenience because of the interval undersize according to arranging, and the interval is too big to reach the coincidence of diagonal angle steel pipe thick liquid diffusion scope, and sash roof beam net size sets up and is distinguished from the slope lattice beam of roadbed and uses the stock interval to arrange as the standard. The construction method has the advantages that the section size of the lattice beam is large, multiple micro piles can be arranged, and the construction method is not limited by the space between the micro piles. The section of the vertical upright post of the lattice beam is set to be 2.2 multiplied by 0.4m and can contain 3 micro-piles, the distance between the cross beams is 3.2cm, and the section is set to be 1.8 multiplied by 0.4m and can contain 3 micro-piles.
The method has the advantages of rapidness, safety, environmental protection and the like, is innovative, combines the conventional earth surface grouting and the conventional earth surface grouting to form advantage complementation by introducing the theoretical basis of protecting the roadbed slope anchor rod frame beam, has good reference significance for similar projects, has a positive effect on promoting the innovation of construction technology, and has obvious benefits on improving the competitiveness of enterprise industry and promoting the high-quality development of companies. And secondly, the later-stage risk can be basically ignored, the side and elevation slope is difficult to avoid by adopting other modes, and potential safety hazards are brought to adjacent buildings. After construction, the vegetation on the surface of the ground can be recovered, so that the phenomenon that a large-area ground surface wound brings oppression to a traveling crane is avoided. Has obvious popularization and application values in the construction of the same type of tunnels.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.
Claims (5)
1. Shallow section miniature steel-pipe pile lattice beam device that buries in tunnel, its characterized in that: including concrete lattice beam (1), a plurality of miniature stake (2) and preliminary bracing bow member (3) in the hidden hole, concrete lattice beam (1) sets up on the top of the shallow section of burying hole body overburden in tunnel, preliminary bracing bow member (3) set up on the top of the shallow section of burying hole in way in the hidden hole, a plurality of miniature stake (2) one end sets up and connects in concrete lattice beam (1) to pass the shallow section of burying hole body overburden in tunnel and be connected with preliminary bracing bow member (3) in the hidden hole.
2. The micro steel pipe pile lattice beam device for the shallow buried section of the tunnel according to claim 1, which is characterized in that: the micro pile (2) comprises a steel pipe (2.2), a reinforcement cage (2.3) and grout (2.4), the steel pipe (2.2) is arranged in the vertical hole (2.1), the reinforcement cage (2.3) is arranged in the steel pipe (2.2), and the grout (2.4) is filled in the steel pipe (2.2).
3. The micro steel pipe pile lattice beam device for the shallow buried section of the tunnel according to claim 2, wherein: the steel reinforcement cage (2.3) comprises three reinforcing bars, the three reinforcing bars are arranged at intervals, the three reinforcing bars are arranged into a tripod structure, and the fixing bars are welded at intervals outside the tripod structure.
4. The micro steel pipe pile lattice beam device for the shallow buried section of the tunnel according to claim 3, wherein: concrete lattice beam (1) includes vertical bar (1.3) and horizontal bar (1.4), and two vertical bar (1.3) set up on the shallow section of burying in tunnel body overburden, and the direction of two vertical bar (1.3) is the same with the direction in tunnel, and the width ratio tunnel of the width of two vertical bar (1.3) is big, and a plurality of horizontal bar (1.4) set up between two vertical bar (1.3), and a plurality of miniature stake (2) are connected on horizontal bar (1.4) to set up with horizontal bar (1.4) an organic whole.
5. The micro steel pipe pile lattice beam device for the shallow buried section of the tunnel according to claim 4, wherein: the vertical bars (1.3) and the transverse bars (1.4) are both composed of concrete and lattice beam reinforcement cages (1.1), and the lattice beam reinforcement cages (1.1) are welded with the reinforcement cages (2.3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123042400.3U CN216894416U (en) | 2021-12-06 | 2021-12-06 | Shallow section miniature steel-pipe pile lattice beam device that buries in tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123042400.3U CN216894416U (en) | 2021-12-06 | 2021-12-06 | Shallow section miniature steel-pipe pile lattice beam device that buries in tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216894416U true CN216894416U (en) | 2022-07-05 |
Family
ID=82204511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123042400.3U Active CN216894416U (en) | 2021-12-06 | 2021-12-06 | Shallow section miniature steel-pipe pile lattice beam device that buries in tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216894416U (en) |
-
2021
- 2021-12-06 CN CN202123042400.3U patent/CN216894416U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101864773B (en) | Deep foundation pit support process | |
| CN100564700C (en) | The job practices of lattice type steel column tower crane pedestal | |
| CN103452147B (en) | Self-balancing anchor counterweight broken pile forced-landing tilt correcting method | |
| CN102605792B (en) | Multi-row mini-pile enclosing structure for blocking soil and construction process | |
| CN102518135A (en) | Foundation pit support construction method combining horizontal rotary jet-grouting soil bolting and bore concrete piles | |
| CN212641473U (en) | Foundation pit supporting structure adjacent to existing building | |
| CN114278310B (en) | Construction method of micro steel pipe pile lattice beam at shallow buried section of tunnel | |
| CN106930271A (en) | It is a kind of to excavate the continuous side wall supporting and retaining system protective construction in underground and its construction method without fertile groove | |
| CN109914422A (en) | A kind of steel pipe and soil nailing combined type foundation pit supporting construction and construction method | |
| CN103114595A (en) | Support method and device of support pile preformed core-soil double-buttress inclined inner-strut foundation ditch | |
| CN209923935U (en) | Co-location combined pile wall supporting structure in upper-soft and lower-hard stratum | |
| CN108035360B (en) | A method of for pattern foundation pit supporting structure | |
| CN220266568U (en) | Be applied to combination supporting construction of subway foundation ditch | |
| CN108330963A (en) | A kind of constructing device for inside soil body existing pile foundation pile extension | |
| CN218813764U (en) | Stress-maintaining type faces combination continuous pile wall supporting construction forever | |
| CN216894416U (en) | Shallow section miniature steel-pipe pile lattice beam device that buries in tunnel | |
| CN208981337U (en) | Tunnel immediately adjacent to bridge section deep foundation pit supporting structure | |
| CN1027387C (en) | Method for supporting deep-foundation side wall by use of channel-section steel and anchor bar concrete pile | |
| CN206800370U (en) | It is a kind of to excavate the continuous side wall supporting and retaining system protective construction in underground without fertile groove | |
| CN108005086B (en) | A kind of high buttress counter pull type inclined support structure for pattern foundation pit supporting structure | |
| CN207092103U (en) | A kind of deep foundation pit supporting structure | |
| CN206337566U (en) | Foundation ditch vertical prestressing anchor pole supporting construction | |
| CN215292504U (en) | Tunnel structure penetrating through large karst cavity top plate | |
| CN214497537U (en) | Double-row pile supporting system | |
| CN201232189Y (en) | Composite soil nail wall supporting construction for adding piers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |