CN219654703U - Reinforcing structure for tunnel lining penetrating crack - Google Patents
Reinforcing structure for tunnel lining penetrating crack Download PDFInfo
- Publication number
- CN219654703U CN219654703U CN202321209845.2U CN202321209845U CN219654703U CN 219654703 U CN219654703 U CN 219654703U CN 202321209845 U CN202321209845 U CN 202321209845U CN 219654703 U CN219654703 U CN 219654703U
- Authority
- CN
- China
- Prior art keywords
- anchoring
- crack
- lining
- anchor
- penetrating
- 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
- 230000000149 penetrating effect Effects 0.000 title claims abstract description 56
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 19
- 238000004873 anchoring Methods 0.000 claims abstract description 113
- 239000011435 rock Substances 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims description 12
- 230000002787 reinforcement Effects 0.000 claims description 8
- 230000035515 penetration Effects 0.000 claims description 7
- 239000000945 filler Substances 0.000 claims description 3
- 239000004567 concrete Substances 0.000 description 14
- 238000010276 construction Methods 0.000 description 7
- 101700004678 SLIT3 Proteins 0.000 description 3
- 102100027339 Slit homolog 3 protein Human genes 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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 discloses a reinforcing structure of a tunnel lining penetrating crack, which comprises M first anchoring pieces, M first anchoring plates and M first nuts, wherein the M first anchoring plates are arranged on the first anchoring plates; m first fixing blind holes are formed in the lining penetrating through two sides of the extending direction of the crack; the first fixing blind holes on each side are sequentially arranged along the extending direction of the penetrating crack; the first anchoring plate is arranged at the bottom of the first fixed blind hole; one end of the first anchoring piece sequentially penetrates through the first anchoring plate, the lining and surrounding rock connected with the lining; the first nut is arranged at the other end of the first anchoring piece and is connected with the first anchoring plate. According to the reinforcing structure for the tunnel lining penetrating crack, anchoring parts are used for fixing at the two sides and the outside of the end points of the penetrating crack, so that the lining, the penetrating crack and the anchoring parts of the tunnel form a closed hinged support structure, the stress state of lining structures at the two sides of the crack can be improved, the expansion of the crack is avoided, and the structural safety of the hydraulic tunnel is improved.
Description
Technical Field
The utility model discloses a reinforcing structure for a tunnel lining penetrating crack, and belongs to the technical field of intersection of hydraulic and hydroelectric engineering and underground engineering.
Background
The lining refers to a permanent supporting structure built with lining materials along the periphery of the tunnel in order to prevent surrounding rock from being deformed or collapsed. Wherein the lining material comprises a masonry lining, a rubble concrete lining, a reinforced concrete lining and an integrally poured concrete lining.
Reinforced concrete lining is largely adopted in the existing hydraulic tunnel. And the reinforced concrete lining of the hydraulic tunnel is often cracked due to the problems of internal pressure, surrounding rock softening, temperature shrinkage deformation and the like. Lining fracture will lead to the seepage problem, and penetration crack not only can seriously leak, and can endanger hydraulic tunnel's durability and structure safety even, influence the normal operating of power station, cause certain economic loss to the tunnel maintenance has brought the degree of difficulty.
In the prior art, the reinforcement method for the penetrability crack is to use a grouting pipe to inject concrete into the crack for reinforcement, the reinforcement mode has the problem of poor durability, and the crack can still be continuously expanded to influence the structural safety of the hydraulic tunnel.
Disclosure of Invention
The utility model aims to provide a reinforcing structure for a through crack of a tunnel lining, which aims to solve the technical problems that in the prior art, concrete is injected into the crack for reinforcement by using a grouting pipe, the durability is poor, the crack can be continuously expanded, and the safety of a hydraulic tunnel structure is affected.
The utility model provides a reinforcing structure for a tunnel lining penetrating crack, which comprises M first anchoring pieces, M first anchoring plates and M first nuts, wherein the M first anchoring plates are arranged on the first anchoring plates;
m first fixing blind holes are formed in the lining penetrating through two sides of the extending direction of the crack; the first fixing blind holes on each side are sequentially arranged along the extending direction of the penetrating crack;
the first anchor plate is arranged at the bottom of the first fixed blind hole;
one end of the first anchoring piece sequentially penetrates through the first anchoring plate, the lining and surrounding rock connected with the lining;
the first nut is arranged at the other end of the first anchoring piece and is connected with the first anchoring plate.
Preferably, the first filling layer is further included;
the first filling layer is filled in the penetrating crack, and the material strength of the first filling layer is greater than or equal to that of the lining.
Preferably, the device further comprises N second anchoring pieces, N second anchoring plates and N second nuts;
n second fixing blind holes are formed in two sides of an extension line of a tangent line at the end point of the penetrating crack; the second fixing blind holes on each side are sequentially arranged along the extending direction of the penetrating crack;
the second anchor plate is arranged at the bottom of the second fixed blind hole;
one end of the second anchoring piece sequentially penetrates through the second anchoring plate, the lining and surrounding rock connected with the lining;
the second nut is arranged at the other end of the second anchoring piece and is connected with the second anchoring plate.
Preferably, the first anchoring plate and the second anchoring plate are provided with an anchoring hole and a grouting hole;
the number of the grouting holes is multiple, and the grouting holes are arranged in a pair of two opposite way by taking the anchoring holes as the center.
Preferably, the first anchoring pieces are uniformly distributed on two sides of the penetrating crack, and are arranged in a pair of two opposite directions;
the second anchoring pieces are uniformly distributed on two sides of an extension line of a tangent line at the end point of the penetrating crack, and are arranged in a two-to-two opposite mode.
Preferably, two first anchoring parts which are arranged in a pairwise manner are obliquely arranged and converge towards the center of the tunnel;
and the two second anchoring parts which are arranged in a pairwise opposite way are obliquely arranged and converge towards the center of the tunnel.
Preferably, the included angle between the first anchoring piece and the surface of the lining where the penetrating crack is located is in the range of 90 degrees plus or minus 10 degrees;
the included angle between the second anchoring piece and the surface of the lining where the penetrating crack is located is 90 degrees plus or minus 10 degrees.
Preferably, the first anchoring member is an anchor rod or an anchor cable;
the second anchoring piece is an anchor rod or an anchor cable.
Preferably, the anchor rod is a prestressed anchor rod, a non-prestressed anchor rod or an anchor bar pile.
Preferably, a second filler layer is also included;
the second filling layer is filled in the first fixing blind hole provided with the first anchoring piece, the first anchoring plate and the first nut;
the second filling layer is also filled in the second fixing blind hole provided with the second anchoring piece, the second anchoring plate and the second nut;
the material strength of the second filling layer is greater than or equal to the material strength of the lining.
Compared with the prior art, the reinforcing structure for the tunnel lining penetrating crack has the following beneficial effects:
according to the reinforcing structure for the tunnel lining penetrating crack, anchoring parts are used for fixing at the two sides and the outside of the end points of the penetrating crack, so that the lining, the penetrating crack and the anchoring parts of the tunnel form a closed hinged support structure, the stress state of lining structures at the two sides of the crack can be improved, the expansion of the crack is avoided, and the structural safety of the hydraulic tunnel is improved.
According to the utility model, the anchoring piece is used for limiting the relative deformation of lining at two sides of the crack, so that the first filling layer penetrating through the crack can be better adhered to the original concrete structure, secondary falling and damage are not easy to occur, the structural safety of the hydraulic tunnel is further improved, and the service life of the hydraulic tunnel is prolonged.
Drawings
FIG. 1 is a schematic structural view of a reinforcing structure for a tunnel liner penetration crack according to an embodiment of the present utility model;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is a schematic view illustrating the use of a first anchor plate in a reinforcement structure for a tunnel liner through-crack according to an embodiment of the present utility model;
fig. 4 is a schematic diagram of the use of a first anchor in a reinforcement structure of a tunnel liner penetrating through a crack according to an embodiment of the present utility model.
The same reference numbers are used throughout the drawings to reference like elements or structures, wherein:
1 is a lining; 2 is a first anchor; 3 is a penetrating crack; 4 is a first fixed blind hole; 5 is a first filling layer; 6 is a second filling layer; 7 is a first anchor plate; 71 anchoring holes; 72 grouting holes; 8 is a first nut; 9 is an anchor plate leveling layer; 10 is an excavation line.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present utility model. It will be apparent, however, to one skilled in the art that the present utility model may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present utility model with unnecessary detail.
The utility model provides a reinforcing structure for a tunnel lining penetrating crack, which is shown in fig. 1 and 2, and comprises M first anchoring pieces 2, M first anchoring plates 7 and M first nuts 8;
m first fixing blind holes 4 are formed in the lining on two sides of the extending direction of the penetrating crack 3; the first fixing blind holes 4 on each side are sequentially distributed along the extending direction of the penetrating crack 3;
the first anchor plate 7 is arranged at the bottom of the first fixed blind hole 4 and is positioned on the anchor plate leveling layer 9;
one end of the first anchoring member 2 sequentially passes through the first anchoring plate 7, the lining 1 and surrounding rock connected with the lining 1; the excavation line 10 is arranged on one side of the surrounding rock, which is close to the lining 1;
the first nut 8 is arranged at the other end of the first anchor 2 and is connected to the side of the first anchor plate 7 facing away from the surrounding rock, see fig. 4.
In the embodiment of the utility model, the first anchoring parts 2 are used for fixing at the two sides of the penetrating crack 3, so that the lining 1 of the tunnel, the penetrating crack 3 and the first anchoring parts 2 form a closed hinged support structure, the stress state of the lining 1 at the two sides of the crack can be improved, the expansion of the crack is avoided, and the structural safety of the hydraulic tunnel is improved.
In order to further improve the structural safety of the hydraulic tunnel and prolong the service life of the hydraulic tunnel, the hydraulic tunnel further comprises a first filling layer 5;
the first filling layer 5 is filled in the penetrating crack 3, and the material strength of the first filling layer 5 is greater than or equal to that of the lining 1.
In the embodiment of the utility model, the first filling layer 5 is filled in the penetrating crack 3, so that the appearance and roughness of the lining 1 at the crack are equivalent to those of the original hydraulic tunnel, the concrete around the penetrating crack 3 can be removed firstly, then the concrete with the same or higher strength grade as the concrete of the lining 1 is used for filling, if the impact-resistant and wear-resistant material is used for filling, the surface is polished to be smooth according to the uneven requirement, and the construction requirement is the same as that of the concrete with the original structure.
According to the embodiment of the utility model, the first anchoring piece 2 is used for limiting the relative deformation of the lining 1 at the two sides of the crack, so that the first filling layer 5 penetrating through the crack 3 can be better adhered to the original concrete structure, secondary falling and damage are not easy to occur, and the structural safety and the service life of the hydraulic tunnel are improved.
In order to greatly improve the structural safety of the hydraulic tunnel, the embodiment of the utility model further comprises N second anchoring pieces, N second anchoring plates and N second nuts;
n second fixing blind holes are formed in two sides of an extension line penetrating through a tangent line at the end point of the crack 3; the second fixing blind holes on each side are sequentially distributed along the extending direction of the penetrating crack 3; in the embodiment of the utility model, the second fixed blind hole is set only in a set range from the end point of the penetrating crack 3, and the specific range is calculated and determined according to the compressive load capacity of the concrete.
The second anchor plate is arranged at the bottom of the second fixed blind hole;
one end of the second anchoring piece sequentially penetrates through the second anchoring plate, the lining 1 and surrounding rock connected with the lining 1;
the second nut is arranged at the other end of the second anchoring piece and is connected with the second anchoring plate.
In the embodiment of the utility model, the second anchoring parts are arranged at the two sides of the extension line of the tangent line at the end point of the penetrating slit 3, so that the stress state of the structure of the lining 1 at the outer side of the end point of the slit can be improved, and the further expansion of the penetrating slit 3 can be effectively avoided.
In order to facilitate subsequent grouting, the first anchoring plate 7 and the second anchoring plate in the embodiment of the utility model are also provided with anchoring holes 71 and grouting holes 72; wherein the first anchor 2 and the second anchor are anchored through respective corresponding anchor holes 71, respectively. The number of the grouting holes 72 is plural, and the plurality of grouting holes 72 are arranged in pairs centering on the anchor hole 71. The construction of the first anchorage plate 7 with 2 grouting holes 72 is shown in figure 3. In a specific embodiment, the hole depths and diameters of the first fixing blind hole 4 and the second fixing blind hole may be the same or different, wherein the hole depths range from 80 to 120mm; the diameter ranges from 180mm to 220mm. In fig. 3, the first anchoring plate 7 and the second anchoring plate are square in shape, and the sides of the square are 80mm-120mm long.
The embodiment of the utility model further improves the structural safety of the hydraulic tunnel, so that a plurality of first anchoring pieces 2 are uniformly distributed on two sides of the penetrating crack 3 and are arranged in a pairwise opposite way;
the second anchoring pieces are uniformly distributed on two sides of an extension line of a tangent line at the end point of the penetrating crack 3, and are arranged in a two-to-two opposite mode.
The first anchoring piece 2 and the second anchoring piece can be vertically inserted into the tunnel surface and also can be obliquely inserted, in the embodiment, in order to avoid the situation that the first anchoring piece 2 and the second anchoring piece are vertically inserted into surrounding rock and are directly inserted into surrounding rock, unexpected cracks are generated due to large change of stress state, and in the embodiment of the utility model, two first anchoring pieces 2 which are arranged in pairs are obliquely arranged and are converged towards the center of the tunnel; two second anchoring parts which are arranged in a pairwise opposite way are obliquely arranged and converge towards the center of the tunnel. As shown in fig. 2.
In the embodiment of the utility model, the included angle between the first anchoring piece 2 and the surface of the lining 1 where the penetrating crack 3 is positioned is 90 degrees+/-10 degrees; the angle between the second anchoring member and the surface of the lining 1 where the penetrating slit 3 is located is in the range of 90 DEG + -10 deg. Within the angle range, the stability of anchoring can be ensured, and the change of stress state can be reduced.
In the embodiment of the utility model, the first anchoring member 2 is an anchor rod or an anchor cable; the second anchoring piece is an anchor rod or an anchor cable. Wherein the anchor rod is a prestressed anchor rod, a non-prestressed anchor rod or an anchor bar pile.
In order to ensure the strength and the integrity of the surface of the lining 1, the embodiment of the utility model also comprises a second filling layer 6;
the second filling layer 6 is filled in the first fixing blind hole 4 provided with the first anchoring piece 2, the first anchoring plate 7 and the first nut 8;
the second filling layer 6 is also filled in a second fixed blind hole provided with a second anchoring piece, a second anchoring plate and a second nut;
the material strength of the second filling layer 6 is greater than or equal to the material strength of the lining 1.
According to the embodiment of the utility model, the number, the length, the anchoring force, the inclination angle and the like of the first anchoring piece 2 and the second anchoring piece are determined according to calculation; the size and thickness of the first anchoring plate 7 and the second anchoring plate and the diameter and depth of the first fixing blind hole 4 and the second fixing blind hole are calculated and determined according to the compressive bearing capacity of the concrete.
The construction steps of the embodiment of the utility model are as follows:
step 1: supporting the lining 1 penetrating the crack 3 part to ensure construction safety; drilling the concrete of the lining 1 where the first anchoring piece 2 and the second anchoring piece are installed;
step 2: the lining 1 is provided with a first fixed blind hole 4 and a second fixed blind hole for construction;
step 3: the first anchoring piece 2 and the second anchoring piece are installed and grouting is carried out, and the prestressed anchor rod (cable) is stretched;
step 4: and (3) after the construction of the step (2) and the step (3) is finished, filling concrete into the first fixed blind hole (4) and the second fixed blind hole.
Step 5: and 4, filling the penetrating crack 3 after the construction is completed.
In the embodiment of the utility model, the first anchoring piece 2 and the second anchoring piece are used for fixing outside the end parts of the two sides of the penetrating crack 3, so that the lining 1 of the tunnel, the penetrating crack 3, the first anchoring piece 2 and the second anchoring piece form a closed hinge supporting structure, the stress state of the lining 1 structures on the two sides of the crack can be improved, the expansion of the crack is avoided, and the structural safety of the hydraulic tunnel is improved.
While the utility model has been described in terms of preferred embodiments, it will be understood by those skilled in the art that various changes and modifications can be made without departing from the scope of the utility model, and it is intended that the utility model is not limited to the specific embodiments disclosed.
Claims (10)
1. The reinforcing structure of the tunnel lining penetrating crack is characterized by comprising M first anchoring pieces, M first anchoring plates and M first nuts;
m first fixing blind holes are formed in the lining penetrating through two sides of the extending direction of the crack; the first fixing blind holes on each side are sequentially arranged along the extending direction of the penetrating crack;
the first anchor plate is arranged at the bottom of the first fixed blind hole;
one end of the first anchoring piece sequentially penetrates through the first anchoring plate, the lining and surrounding rock connected with the lining;
the first nut is arranged at the other end of the first anchoring piece and is connected with the first anchoring plate.
2. The tunnel liner through crack reinforcing structure of claim 1, further comprising a first filler layer;
the first filling layer is filled in the penetrating crack, and the material strength of the first filling layer is greater than or equal to that of the lining.
3. The tunnel liner through crack reinforcement structure of claim 1 or 2, further comprising N second anchors, N second anchor plates, and N second nuts;
n second fixing blind holes are formed in two sides of an extension line of a tangent line at the end point of the penetrating crack; the second fixing blind holes on each side are sequentially arranged along the extending direction of the penetrating crack;
the second anchor plate is arranged at the bottom of the second fixed blind hole;
one end of the second anchoring piece sequentially penetrates through the second anchoring plate, the lining and surrounding rock connected with the lining;
the second nut is arranged at the other end of the second anchoring piece and is connected with the second anchoring plate.
4. The reinforcing structure of a tunnel liner through crack according to claim 3, wherein the first anchor plate and the second anchor plate are provided with anchor holes and grouting holes;
the number of the grouting holes is multiple, and the grouting holes are arranged in a pair of two opposite way by taking the anchoring holes as the center.
5. The tunnel liner penetration crack reinforcing structure of claim 3, wherein the first plurality of anchors are uniformly distributed on both sides of the penetration crack and are disposed two by two;
the second anchoring pieces are uniformly distributed on two sides of an extension line of a tangent line at the end point of the penetrating crack, and are arranged in a two-to-two opposite mode.
6. The reinforcement structure of a tunnel liner penetration crack according to claim 5, wherein two first anchors disposed two by two are each disposed obliquely and converge toward the center of the tunnel;
and the two second anchoring parts which are arranged in a pairwise opposite way are obliquely arranged and converge towards the center of the tunnel.
7. The tunnel liner penetration crack reinforcing structure of claim 6, wherein an included angle between the first anchor and a surface of the liner where the penetration crack is located ranges from 90 ° ± 10 °;
the included angle between the second anchoring piece and the surface of the lining where the penetrating crack is located is 90 degrees plus or minus 10 degrees.
8. The tunnel liner through crack reinforcing structure of claim 3, wherein the first anchor is an anchor rod or an anchor cable;
the second anchoring piece is an anchor rod or an anchor cable.
9. The tunnel liner through crack reinforcing structure of claim 8, wherein the anchor rod is a prestressed anchor rod, a non-prestressed anchor rod, or an anchor bar pile.
10. The tunnel liner through crack reinforcing structure of claim 3, further comprising a second filler layer;
the second filling layer is filled in the first fixing blind hole provided with the first anchoring piece, the first anchoring plate and the first nut;
the second filling layer is also filled in the second fixing blind hole provided with the second anchoring piece, the second anchoring plate and the second nut;
the material strength of the second filling layer is greater than or equal to the material strength of the lining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321209845.2U CN219654703U (en) | 2023-05-18 | 2023-05-18 | Reinforcing structure for tunnel lining penetrating crack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321209845.2U CN219654703U (en) | 2023-05-18 | 2023-05-18 | Reinforcing structure for tunnel lining penetrating crack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219654703U true CN219654703U (en) | 2023-09-08 |
Family
ID=87877324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321209845.2U Active CN219654703U (en) | 2023-05-18 | 2023-05-18 | Reinforcing structure for tunnel lining penetrating crack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219654703U (en) |
-
2023
- 2023-05-18 CN CN202321209845.2U patent/CN219654703U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11293183B2 (en) | Precast column base joint and construction method therefor | |
| CN110541354B (en) | Single-section prefabricated anti-seismic pier and construction method thereof | |
| CN110206560A (en) | A kind of adaptive composite lining structure suitable for large deformation soft rock tunnel | |
| CN110454206B (en) | Prestressed anchor cable, anchor rod and anchor cable combined support system and soft rock stratum support process | |
| CN110617067A (en) | Low-risk construction method for full-section boundary advanced pipe shed of extremely-soft surrounding rock tunnel | |
| CN110629671A (en) | Suspension bridge anchorage and construction method thereof | |
| CN111663444A (en) | Suspension bridge tunnel anchor and rock mass anchor combined type anchorage structure and construction method | |
| CN108119164B (en) | Prefabricated assembled composite support structure | |
| CN110513124B (en) | Embedded grouting pipe network supporting structure of high-stress layered unloading fractured rock mass roadway | |
| CN112483121A (en) | Anti-loosening support method for columnar joint surrounding rock of underground cavern | |
| CN219654703U (en) | Reinforcing structure for tunnel lining penetrating crack | |
| CN107476316B (en) | Building foundation pit internal and external support structure and construction method | |
| CN113668524A (en) | PSB finish rolling deformed steel bar-based expanded head anti-floating anchor rod prestress application method | |
| CN102444408B (en) | Secondary lining split mounting type blocking head device for metro underground excavation tunnel | |
| CN209855832U (en) | Self-rotating anchoring pipe | |
| CN217629964U (en) | Basement deep foundation pit replacement support | |
| CN214695645U (en) | Supporting structure capable of applying prestress | |
| CN214659062U (en) | Support-anchor composite reinforcement structure of rammed earth wall | |
| CN213062030U (en) | Combined concrete filled steel tube waist beam structure, prefabricated member and connecting node | |
| CN104818678A (en) | Simply supported hollow plate girder bending resistance reinforcement method | |
| CN219280687U (en) | Device for repairing broken damage of pile foundation of wharf and pile foundation structure of high-pile wharf | |
| CN221480875U (en) | Underground powerhouse side wall excavation reveals karst cave reinforcement structure | |
| CN115478548B (en) | Expansion soil cutting side slope expansion-reducing anti-seismic disaster-preventing combined retaining structure and construction method | |
| CN220768081U (en) | Combined inclined pile support foundation pit supporting structure | |
| CN216894434U (en) | Assembled steel pipe concrete inverted arch capable of adjusting tunnel bottom plate uplift |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |