CN215565961U - Construction structure for underground, water conservancy and tunnel engineering construction and disease remediation - Google Patents
Construction structure for underground, water conservancy and tunnel engineering construction and disease remediation Download PDFInfo
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- CN215565961U CN215565961U CN202120926684.3U CN202120926684U CN215565961U CN 215565961 U CN215565961 U CN 215565961U CN 202120926684 U CN202120926684 U CN 202120926684U CN 215565961 U CN215565961 U CN 215565961U
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Abstract
The utility model discloses a construction structure for underground, water conservancy and tunnel engineering construction and disease remediation thereof, which comprises a high-strength concrete fast-assembling member, an anchoring device and early-strength high-performance grouting material, wherein the high-strength concrete fast-assembling member is in an assembling connection mode, the high-strength concrete fast-assembling member is installed on the inner side of a tunnel, the anchoring device anchors the high-strength concrete fast-assembling member on surrounding rocks of the tunnel, and the early-strength high-performance grouting material is injected between the high-strength concrete fast-assembling member and the inner side of the tunnel. The high-strength concrete fast-assembling member forms a lining of the tunnel surrounding rock, and the periphery of the lining is hermetically connected to the tunnel surrounding rock by sealant. The utility model adopts the high-strength concrete lining fast-assembling member to replace the traditional corrugated plate, has simpler construction process, higher efficiency, reduced construction difficulty, saved construction cost and strong designability.
Description
Technical Field
The utility model belongs to the technical field of tunnel construction, and particularly relates to a construction structure for underground, water conservancy and tunnel engineering construction and disease remediation.
Background
The tunnel is used as the most important infrastructure in China, and has very important functions in the fields of railway track traffic, highways and the like.
With the extension of the operation time of the tunnel, the defects of cracks, block dropping, water leakage, local peeling of the lining, corrosion of honeycombs and reinforcing steel bars and the like can be inevitably generated, so that serious potential safety hazards are caused, and the tunnel maintenance and reinforcement technology is required to ensure the safe operation of the tunnel.
At present, a corrugated plate structure is mainly adopted to reinforce a tunnel, and after the corrugated plate structure is built, a combined structure is formed by filling a pouring material behind the plate and an existing structure, and the combined structure is stressed together, so that the stress characteristic of the structure is improved, and the existing structure is reinforced.
But because the monolithic of buckled plate is great and weight is heavier to lead to the installation degree of difficulty great, the construction progress is slow to appear, the higher grade of construction cost is outstanding problem day by day, and then can't be safe, quick, the disease of high-quality completion tunnel and culvert is renovated. These problems not only affect the construction, but also directly concern the normal service of railway tunnels and culverts and the safe operation of railway lines. Therefore, a construction process with low cost, quick and convenient construction and high quality is needed, the disease treatment process can be smoothly completed in the skylight period, and the safe operation of the railway route is ensured.
In tunnel construction, shotcrete is generally adopted to primarily support a tunnel, but when surrounding rock with high grade, soft rock, large deformation, rock burst or water leakage section is encountered, the shotcrete has the phenomena of high rebound rate, poor supporting effect, even loss of supporting effect and the like, and the accidents of collapse and the like of the excavated tunnel occur in untimely supporting, so that a novel construction structure with high speed and high efficiency and good supporting effect needs to be developed to break through the inherent mode.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide a construction structure which is simple in structure and convenient to use and is used for underground, water conservancy and tunnel engineering construction and disease remediation, and is applied to underground, water conservancy and tunnel engineering construction and disease remediation.
In order to achieve the purpose, the technical scheme of the utility model is as follows: the utility model provides a construction structures for underground, water conservancy, tunnel engineering construction and disease renovation, includes high-strength concrete ready-packaged component, anchor device and early strength high performance grout material, high-strength concrete ready-packaged component is for assembling the connected mode, and high-strength concrete ready-packaged component installs in the tunnel inboard, and anchor device will be high-strength concrete ready-packaged component anchor on tunnel country rock, pours into early strength high performance grout material into between high-strength concrete ready-packaged component and tunnel inboard.
Furthermore, the high-strength concrete fast-assembling component forms a lining of the tunnel surrounding rock, and the periphery of the lining is hermetically connected to the tunnel surrounding rock by adopting sealant.
Furthermore, the high-strength concrete fast-assembling member is composed of a plurality of high-strength concrete module units with the same size, and the high-strength concrete module units are sequentially arranged along the inner side direction of the tunnel and are mutually connected.
Furthermore, a seamless steel pipe or a sleeve is pre-embedded in the high-strength concrete modular units, reinforcing steel bars are inserted into the seamless steel pipe or the sleeve, the two adjacent high-strength concrete modular units are connected, and a grouting/overflowing opening is formed in the seamless steel pipe or the sleeve.
Furthermore, a groove is formed in the connecting end of the seamless steel pipe or the sleeve on the high-strength concrete module unit, a grouting/overflowing opening is also formed in the position, corresponding to the grouting/overflowing opening of the seamless steel pipe or the sleeve, of the groove, and after the high-strength concrete module units are connected, grouting materials are poured into the groove and the seamless steel pipe or the sleeve at one time, so that the high-strength concrete module units are connected to form an integral structure.
Furthermore, a seamless steel pipe is pre-embedded in the high-strength concrete module unit, the seamless steel pipe longitudinally penetrates through the high-strength concrete module unit, bosses are arranged at positions, 10-20cm away from the two ports, of the inner side of the seamless steel pipe, the end portions of the reinforcing steel bars are in contact with the bosses, and the insertion positions of the reinforcing steel bars are limited.
Furthermore, the high-strength concrete modular unit is provided with an anchor hole and a grouting/overflowing opening, the high-strength concrete fast-assembling member is anchored on the surrounding rock of the tunnel by matching with the anchor hole through an anchoring device, and early-strength high-performance grouting material is injected into the inner side of the lining through the grouting/overflowing opening until the grouting material flows out of the overflowing opening.
Further, adopt mortise-tenon joint between the adjacent high-strength concrete modular unit, the one end of high-strength concrete modular unit is equipped with the concatenation tooth, and the opposite one end of high-strength concrete modular unit is equipped with the splice groove, and through concatenation tooth and the interlock of concatenation groove tenon fourth of the twelve earthly branches between adjacent high-strength concrete modular unit, the overlap joint adopts sealed glue or grout material to seal.
Furthermore, one side of the high-strength concrete module unit, which is close to the tunnel, is set to be a rough surface, a reinforcing steel bar and a fiber net are arranged in the high-strength concrete module unit to serve as reinforcing ribs, and the high-strength concrete module unit is made of chopped fiber reinforced concrete or UHPC or chopped fiber reinforced UHPC.
Furthermore, the length and the width of the high-strength concrete modular unit are designed according to the section size of the tunnel, the thickness of the high-strength concrete modular unit is designed according to the disease degree, the grade of surrounding rocks and geological conditions, and a reinforcing mesh or a fiber mesh is laid on the surface of the damaged lining of the tunnel.
The technical scheme adopted by the utility model has the advantages that:
the construction structure provided by the utility model adopts the high-strength concrete lining quick-assembly member to replace the traditional corrugated plate, the construction operation is simpler and more convenient, the efficiency is higher, the construction difficulty is reduced, the construction cost is saved, the designability is strong, the strength grade and the thickness of the high-strength concrete quick-assembly member can be designed according to the existing tunnel lining damage condition so as to achieve different bearing capacities, and the size of the quick-assembly member is freely designed according to the section size and the construction condition of the tunnel so as to meet the construction requirement. Meanwhile, the construction structure provided by the utility model can be applied to tunnel maintenance and reinforcement engineering, is convenient and fast to construct, can be applied to tunnel construction of soft rock, large deformation and rock burst zones when early-strength grouting materials are adopted, can freely design the support strength according to the grade of surrounding rock and geological conditions, can reach 20-30MPa within 2-3h, and has only 5.0MPa within 8h even if early-strength alkali-free liquid accelerating agents are adopted for sprayed concrete.
Drawings
The utility model is described in further detail below with reference to the following figures and detailed description:
FIG. 1 is a schematic view of the construction structure of the present invention attached to a surrounding rock of a tunnel;
FIG. 2 is a schematic view of the high strength concrete quick-assembling member of the present invention;
FIG. 3 is a schematic structural diagram of a high strength concrete module unit according to the present invention;
fig. 4 is a schematic view of the grooves of the high strength concrete modular unit of the present invention.
The labels in the above figures are respectively: 1-high strength concrete fast-assembling member; 11-high strength concrete modular unit; 12-seamless steel tube; 13-a groove; 14-a boss; 15-anchor hole; 16-slurry injection/overflow port; 2-anchoring means; 3-early strength high-performance grouting material; and 4, tunnel surrounding rock.
Detailed Description
In the present invention, it is to be understood that the term "length"; "Width"; "Up"; "Down"; "front"; "Back"; "left"; "Right"; "vertical"; "horizontal"; "Top"; "bottom" "inner"; "outer"; "clockwise"; "counterclockwise"; "axial"; "planar direction"; "circumferential" and the like indicate orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the indicated device or element must have a particular orientation; constructed and operative in a particular orientation and therefore should not be construed as limiting the utility model.
As shown in fig. 1 to 4, a construction structure for underground, water conservancy, tunnel engineering construction and disease control thereof comprises a high-strength concrete fast-assembling member 1, an anchoring device 2 and an early-strength high-performance grouting material 3, wherein the high-strength concrete fast-assembling member 1 is in an assembling connection mode, the high-strength concrete fast-assembling member 1 is installed on the inner side of a tunnel, the anchoring device 2 anchors the high-strength concrete fast-assembling member 1 on a surrounding rock 4 of the tunnel, and the early-strength high-performance grouting material 3 is injected between the high-strength concrete fast-assembling member 1 and the inner side of the tunnel. The high-strength concrete fast-assembling member 1 forms a lining of the tunnel surrounding rock 4, and the periphery of the lining is hermetically connected to the tunnel surrounding rock 4 by sealant.
In particular use: firstly, preparing a proper high-strength concrete fast-assembling member according to the type of a tunnel, cleaning and roughening the damaged lining surface of the tunnel, and paving a reinforcing steel bar or a fiber net; the prefabricated high-strength concrete fast-assembling components are installed on the inner side of a tunnel, a lining is spaced from the inner side of the tunnel by a certain distance, a plug-in type fast assembling mode is adopted among the prefabricated components, and one or more of a pre-buried seamless steel pipe, a steel bar sleeve connection mode, a grout anchor steel bar connection mode and a mortise-tenon type connection mode can be selected; then anchoring the high-strength concrete fast-assembling member to the tunnel surrounding rock by using an anchoring device, wherein the preferred anchoring device is one or a combination of anchor rods, anchor bolts and anchoring bolts; the high-strength concrete fast-assembled components are connected into a whole by grouting in sleeves or anchor holes of the high-strength concrete fast-assembled components, and the periphery of the lining is sealed by sealant; and finally, injecting the early-strength high-performance grouting material into the inner side of the lining through the grouting hole until the grouting material flows out of the grout outlet.
The high-strength concrete fast-assembling member 1 is composed of a plurality of high-strength concrete module units 11 with the same size, the high-strength concrete module units 11 are sequentially arranged along the inner side direction of the tunnel and are mutually connected, and the arrangement mode can be one of alignment arrangement and staggered arrangement. The length and the width of the high-strength concrete module unit 11 are designed according to the size of the section of the tunnel, the thickness of the high-strength concrete module unit 11 is designed according to the disease degree, the grade of surrounding rocks and geological conditions, and the preferable thickness is more than or equal to 3.0 cm.
Seamless steel pipes or sleeves are pre-embedded in the high-strength concrete modular units 11, reinforcing steel bars are inserted into the seamless steel pipes or sleeves, two adjacent high-strength concrete modular units 11 are connected, and grouting/overflowing openings are formed in the seamless steel pipes or sleeves. 2-4 seamless steel pipes or sleeves are generally embedded, the outer diameter of each seamless steel pipe or sleeve is larger than 20mm, and the wall thickness of each seamless steel pipe or sleeve is larger than 1.5 mm.
The high-strength concrete module units 11 are provided with grooves 13 at the connecting ends of the seamless steel pipes or the sleeves, the grooves 13 are also provided with grouting/overflowing openings corresponding to the positions of the grouting/overflowing openings of the seamless steel pipes or the sleeves, and after the high-strength concrete module units 11 are connected, grouting materials are poured into the grooves and the seamless steel pipes or the sleeves at one time, so that the high-strength concrete module units 11 are connected into an integral structure. Like this the recess 13 on the adjacent high-strength concrete modular unit 11 is corresponding, and two relative recesses after the slip casting are passed through the thick liquid and are linked into a whole, have also poured into the thick liquid in seamless steel pipe or the sleeve simultaneously, have also linked into a whole, have formed twice between adjacent high-strength concrete modular unit 11 in other words and have connected, increase the stability and the fastness of structure. The size of the groove is preferably more than or equal to 2.0mm in width and more than or equal to 5.0cm in depth.
The high-strength concrete modular unit 11 is provided with an anchor hole 15 and a grouting/overflowing opening 16, the high-strength concrete fast-assembling member 1 is anchored on the tunnel surrounding rock 4 through the matching of the anchoring device 2 and the anchor hole 15, and the early-strength high-performance grouting material 3 is injected into the inner side of the lining through the grouting/overflowing opening 16 until the grouting material flows out of the overflowing opening.
When the high-strength concrete modular units 11 are connected by seamless steel pipes: a seamless steel pipe 12 is pre-buried in the high-strength concrete module unit 11, the seamless steel pipe 12 longitudinally penetrates through the high-strength concrete module unit 11, bosses 14 are arranged on the inner side of the seamless steel pipe 12, which are 10-20cm away from two ports, the end portions of the steel bars are in contact with the bosses 14, and the insertion positions of the steel bars are limited. The steel bar can also penetrate through the seamless steel pipe, and the lug boss 14 is not needed.
If adopt mortise-tenon joint between the adjacent high-strength concrete modular unit 11, the one end of high-strength concrete modular unit 11 is equipped with the concatenation tooth, and the opposite one end of high-strength concrete modular unit 11 is equipped with the splice groove, and through concatenation tooth and the interlock of splice groove tenon fourth of the twelve earthly branches between adjacent high-strength concrete modular unit 11, the overlap joint adopts sealed glue or grout material to seal. The connecting edges of the high-strength concrete module units 11 can be provided with a certain occlusion angle so as to splice a certain radian at the arch waist and the arch crown.
One side of the high-strength concrete module unit 11 close to the tunnel is set to be a rough surface so as to increase the bonding performance of the prefabricated part and the grouting material, reinforcing steel bars and fiber nets are arranged in the high-strength concrete module unit 11 to serve as reinforcing ribs, and the high-strength concrete module unit 11 is made of chopped fiber reinforced concrete or UHPC or chopped fiber reinforced UHPC. And paving a steel bar mesh or a fiber mesh on the surface of the damaged tunnel lining, wherein one of the steel bar mesh, the polypropylene fiber mesh, the carbon fiber mesh and the basalt fiber mesh is preferably selected.
The preferable parameters of the high-strength concrete are as follows: the compressive strength is more than or equal to 60MPa, the tensile strength is more than or equal to 5.0MPa, and the flexural strength is more than or equal to 13 MPa. The optimal parameters of the early strength high-performance grouting material are as follows: the initial expansion degree is 380 plus 410mm, the 60min expansion degree is more than or equal to 320mm, the 3h compressive strength is more than or equal to 30MPa, the 1d compressive strength is more than or equal to 40MPa, and the 28d compressive strength is more than or equal to 60 MPa.
The construction structure provided by the utility model adopts the high-strength concrete lining quick-assembly member to replace the traditional corrugated plate, the construction operation is simpler and more convenient, the efficiency is higher, the construction difficulty is reduced, the construction cost is saved, the designability is strong, the strength grade and the thickness of the high-strength concrete quick-assembly member can be designed according to the existing tunnel lining damage condition so as to achieve different bearing capacities, and the size of the quick-assembly member is freely designed according to the section size and the construction condition of the tunnel so as to meet the construction requirement. Meanwhile, the construction structure provided by the utility model can be applied to tunnel maintenance and reinforcement engineering, is convenient and fast to construct, can be applied to tunnel construction of soft rock, large deformation and rock burst zones when early-strength grouting materials are adopted, can freely design the support strength according to the grade of surrounding rock and geological conditions, can reach 20-30MPa within 2-3h, and has only 5.0MPa within 8h even if early-strength alkali-free liquid accelerating agents are adopted for sprayed concrete.
The utility model is described above with reference to the accompanying drawings, it is obvious that the specific implementation of the utility model is not limited by the above-mentioned manner, and it is within the scope of the utility model to adopt various insubstantial modifications of the technical solution of the utility model or to apply the concept and technical solution of the utility model directly to other occasions without modification.
Claims (8)
1. A construction structure for underground, water conservancy, tunnel engineering construction and disease renovation thereof, its characterized in that: the high-strength concrete fast-assembling member comprises a high-strength concrete fast-assembling member (1), an anchoring device and early-strength high-performance grouting material (3), wherein the high-strength concrete fast-assembling member (1) is in an assembling connection mode, the high-strength concrete fast-assembling member (1) is installed on the inner side of a tunnel, the anchoring device anchors the high-strength concrete fast-assembling member (1) on tunnel surrounding rock (4), and the early-strength high-performance grouting material (3) is injected between the high-strength concrete fast-assembling member (1) and the inner side of the tunnel; the high-strength concrete fast-assembling member (1) is composed of a plurality of high-strength concrete module units (11) with the same size, and the high-strength concrete module units (11) are sequentially arranged along the inner side direction of the tunnel and are mutually connected; seamless steel pipes or sleeves are pre-buried in the high-strength concrete modular units (11), reinforcing steel bars are inserted into the seamless steel pipes or sleeves, two adjacent high-strength concrete modular units (11) are connected, and grouting/overflowing openings are formed in the seamless steel pipes or sleeves.
2. The construction structure for underground, water conservancy and tunnel engineering construction and disease remediation thereof according to claim 1, wherein: the high-strength concrete fast-assembling member (1) forms a lining of the tunnel surrounding rock (4), and the periphery of the lining is hermetically connected to the tunnel surrounding rock (4) by adopting sealant.
3. The construction structure for underground, water conservancy and tunnel engineering construction and disease remediation thereof according to claim 2, wherein: the concrete casting device is characterized in that a groove (13) is formed in the connecting end of the seamless steel pipe or the sleeve on each high-strength concrete module unit (11), a grouting/overflowing opening is also formed in the position, corresponding to the grouting/overflowing opening of the seamless steel pipe or the sleeve, on each groove (13), grouting materials are poured into the grooves and the seamless steel pipe or the sleeve at one time after the high-strength concrete module units (11) are connected, and the high-strength concrete module units (11) are connected into an integral structure.
4. A construction structure for underground, water conservancy and tunnel engineering construction and disease remediation thereof as claimed in claim 3, wherein: seamless steel pipes (12) are pre-buried in the high-strength concrete module units (11), the seamless steel pipes (12) longitudinally penetrate through the high-strength concrete module units (11), bosses (14) are arranged at positions, 10-20cm away from two ports, of the inner sides of the seamless steel pipes (12), the end portions of reinforcing steel bars are in contact with the bosses (14), and the positions of the reinforcing steel bars inserted are limited.
5. The construction structure for underground, water conservancy and tunnel engineering construction and disease remediation thereof according to claim 4, wherein: the high-strength concrete fast-assembling member (1) is anchored on a tunnel surrounding rock (4) in a matched mode through an anchoring device and the anchor holes (15), and early-strength high-performance grouting material (3) is injected into the inner side of the lining through the grouting/overflowing openings (16) until grouting material flows out of the overflowing openings.
6. A construction structure for underground, water conservancy and tunnel engineering construction and disease remediation thereof as claimed in claim 3, wherein: adopt mortise-tenon joint between adjacent high-strength concrete modular unit (11), the one end of high-strength concrete modular unit (11) is equipped with the concatenation tooth, and the opposite one end of high-strength concrete modular unit (11) is equipped with the splice groove, through concatenation tooth and splice groove mortise-tenon joint between adjacent high-strength concrete modular unit (11), the overlap joint adopts sealed glue or grout material to seal.
7. A construction structure for underground, water conservancy and tunnel engineering construction and disease remediation thereof as claimed in claim 3, wherein: one side of the high-strength concrete module unit (11) close to the tunnel is set to be a rough surface, reinforcing steel bars and fiber nets are arranged in the high-strength concrete module unit (11) to serve as reinforcing ribs, and the high-strength concrete module unit (11) is made of chopped fiber reinforced concrete or UHPC or chopped fiber reinforced UHPC.
8. A construction structure for underground, water conservancy and tunnel engineering construction and disease remediation thereof as claimed in claim 3, wherein: the length and the width of the high-strength concrete modular unit (11) are designed according to the size of the section of the tunnel, the thickness of the high-strength concrete modular unit (11) is designed according to the disease degree, the grade of surrounding rocks and geological conditions, and a reinforcing mesh or a fiber mesh is laid on the damaged lining surface of the tunnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120926684.3U CN215565961U (en) | 2021-04-30 | 2021-04-30 | Construction structure for underground, water conservancy and tunnel engineering construction and disease remediation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120926684.3U CN215565961U (en) | 2021-04-30 | 2021-04-30 | Construction structure for underground, water conservancy and tunnel engineering construction and disease remediation |
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| CN215565961U true CN215565961U (en) | 2022-01-18 |
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| CN202120926684.3U Active CN215565961U (en) | 2021-04-30 | 2021-04-30 | Construction structure for underground, water conservancy and tunnel engineering construction and disease remediation |
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