CN219175265U - Precast concrete waist beam for deep foundation pit support pile - Google Patents
Precast concrete waist beam for deep foundation pit support pile Download PDFInfo
- Publication number
- CN219175265U CN219175265U CN202320172309.3U CN202320172309U CN219175265U CN 219175265 U CN219175265 U CN 219175265U CN 202320172309 U CN202320172309 U CN 202320172309U CN 219175265 U CN219175265 U CN 219175265U
- Authority
- CN
- China
- Prior art keywords
- waist beam
- waist
- beam main
- main body
- anchor
- 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
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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
Landscapes
- Foundations (AREA)
Abstract
The application relates to a deep foundation pit support pile precast concrete waist rail relates to the technical field of constructional engineering. The multi-section waist beam comprises a plurality of sections of waist beam bodies, connecting assemblies for connecting the end parts of two adjacent waist beam bodies, a first fixing assembly for fixing the waist beam bodies with supporting piles and a second fixing assembly for fixing the waist beam bodies with anchor spraying surfaces; each waist beam main body is prefabricated, and the waist beam main bodies are horizontally arranged; the connecting assembly is arranged at the end parts of two adjacent waist beam main bodies, the first fixing assembly is arranged on the supporting piles, and the second fixing assembly is arranged on the anchor spraying surface. Compared with the cast-in-situ reinforced concrete waist beam, the prefabricated waist beam has the advantages that the formwork supporting and maintenance are not needed on the construction site, the supporting construction period of the deep foundation pit supporting pile is shortened, and the labor cost is saved.
Description
Technical Field
The application relates to the technical field of constructional engineering, in particular to a precast concrete waist beam for a deep foundation pit support pile.
Background
The building engineering refers to engineering entities formed by building various house buildings and auxiliary facilities thereof and installing and moving lines, pipelines and equipment matched with the building buildings. In the construction process of the constructional engineering, in order to prevent the collapse of the deep foundation pit, waist beams are required to be adopted for supporting the deep foundation pit supporting piles.
In the related art, cast-in-situ reinforced concrete waist beams are generally adopted to support the deep foundation pit supporting piles, and an anchor spraying surface is arranged between two adjacent deep foundation pit supporting piles. When the reinforced concrete waist beam is adopted, the formwork is firstly required to be supported on the deep foundation pit support pile, then a reinforcement cage is woven, concrete is used for casting and forming, and then the cast-in-situ reinforced concrete waist beam is maintained.
For the related technology, the cast-in-situ reinforced concrete waist beam needs to be supported by a formwork, and needs to be maintained after pouring, so that the whole process needs to take a long time, and the defect of long construction period exists.
Disclosure of Invention
In order to shorten the supporting construction period of the deep foundation pit supporting pile, the application provides a precast concrete waist beam for the deep foundation pit supporting pile.
The application provides a deep basal pit support stake precast concrete waist roof beam adopts following technical scheme:
a precast concrete waist beam for a deep foundation pit support pile comprises a plurality of sections of waist beam main bodies, connecting assemblies for connecting the end parts of two adjacent waist beam main bodies, a first fixing assembly for fixing the waist beam main bodies with the support pile and a second fixing assembly for fixing the waist beam main bodies with a spraying anchor surface;
each waist beam main body is prefabricated, and the waist beam main bodies are horizontally arranged;
the connecting assembly is arranged at the end parts of two adjacent waist beam main bodies, the first fixing assembly is arranged on the supporting piles, and the second fixing assembly is arranged on the anchor spraying surface.
By adopting the technical scheme, the waist beam is prefabricated and maintained in a prefabrication factory, the waist beam main body and the support piles are fixed through the first fixing component, the anchor spraying surface between the waist beam main body and the adjacent two support piles is fixed through the second fixing component, and then the adjacent two waist beams are connected through the connecting component, so that the waist beam is installed; compared with the cast-in-situ reinforced concrete waist beam, the prefabricated waist beam has the advantages that the formwork supporting and maintenance are not needed on the construction site, the supporting construction period of the deep foundation pit supporting pile is shortened, and the labor cost is saved.
Optionally, the connecting assembly comprises a connecting bolt and two connecting plates opposite to each other;
two the connecting plate is located adjacent two between the waist rail main part, one the connecting plate with one waist rail main part one end rigid coupling, another the connecting plate with another waist rail main part one end rigid coupling, connecting bolt runs through two the connecting plate sets up, set up in the waist rail main part be used for placing connecting bolt's standing groove.
Through adopting above-mentioned technical scheme, the coupling assembling of design is connected two connecting plates through connecting bolt, is convenient for connect two sections adjacent waist rail main parts, has improved the flexibility of waist rail main part installation.
Optionally, the first fixing component comprises an anchor bar, and the anchor bar penetrates through one end of the waist beam main body and is fixedly connected inside the support pile.
Through adopting above-mentioned technical scheme, the first fixed subassembly of design runs through waist rail main part one end rigid coupling in the support stake inside through the anchor bar, is convenient for fix waist rail main part and support stake, and then is convenient for improve the stability of whole section waist rail main part.
Optionally, the second fixing component comprises an anchor cable, an anchorage device and a pressing plate;
the clamp plate rigid coupling in waist rail main part is kept away from support stake one side, ground tackle one end with the clamp plate rigid coupling, the anchor rope runs through ground tackle, clamp plate and the waist rail main part, the anchor rope runs through waist rail main part one end rigid coupling in spouts the anchor face inside.
Through adopting above-mentioned technical scheme, the second fixed subassembly of design is through wearing the anchor rope to locate in ground tackle and the clamp plate to make the anchor rope run through waist rail main part one end rigid coupling in spout inside the anchor face, the waist rail main part of being convenient for spout anchor face department is fixed, has further improved the stability of whole section waist rail main part.
Optionally, the cross-sectional shape of waist rail main part is protruding quadrangle setting, waist rail main part roof with waist rail main part is close to support stake one side mutually perpendicular, waist rail main part diapire with the contained angle that waist rail main part is close to support stake one side is the acute angle.
By adopting the technical scheme, the top wall of the waist beam main body and one side of the waist beam main body, which is close to the supporting pile, are mutually perpendicular, and when the side wall of the waist beam main body is attached to the side wall of the supporting pile, the levelness of the top wall of the waist beam main body is ensured, so that other constructions can be conveniently carried out on the top wall of the waist beam main body in the follow-up process; the included angle between the bottom wall of the waist beam main body and one side of the waist beam main body, which is close to the support pile, is set to be an acute angle, so that the whole bottom wall of the waist beam is obliquely arranged, the bottom wall of the waist beam main body is enabled to have triangular stability, and the stability of the waist beam main body is further improved.
Optionally, be provided with the backing plate between waist rail main part and the support stake, backing plate one side and support stake lateral wall rigid coupling, opposite side and waist rail main part lateral wall laminating.
Through adopting above-mentioned technical scheme, the backing plate of design is through being fixed in the backing plate and prop up the stake lateral wall for waist rail main part lateral wall and backing plate laminating, because a lesson waist rail main part is to be laminated with many stake lateral walls that prop up, reduced because a plurality of stake lateral walls that prop up do not in same vertical plane and cause waist rail main part lateral wall unable simultaneously with many stake lateral walls that prop up the possibility of laminating, realized that waist rail main part and prop up stake lateral wall closely laminate, thereby further improved the stability of waist rail main part.
Optionally, a gasket is sleeved on the connecting bolt, and a nut of the connecting bolt is abutted to the gasket.
Through adopting above-mentioned technical scheme, the gasket of design, through connecting bolt's nut and gasket butt, prevented connecting bolt's not hard up, improved connecting bolt's fixed performance.
Optionally, a rubber pad is arranged between the two opposite connecting plates.
Through adopting above-mentioned technical scheme, the rubber pad of design, through setting up the rubber pad between two just to the connecting plate, reduced the impact between two connecting plates in the waist rail main part installation, also filled the space between just two connecting plates simultaneously.
In summary, the present application includes at least one of the following beneficial technical effects:
1. compared with the cast-in-situ reinforced concrete waist beam, the prefabricated concrete waist beam for the deep foundation pit support pile has the advantages that the formwork support and maintenance are not needed on the construction site, the support period of the deep foundation pit support pile is shortened, and the labor cost is saved;
2. according to the designed precast concrete waist beam for the deep foundation pit support pile, one end of the waist beam main body is penetrated through by anchor bars and fixedly connected to the inside of the support pile, so that the waist beam main body and the support pile are conveniently fixed, and the stability of the whole waist beam main body is conveniently improved;
3. according to the designed precast concrete waist beam for the deep foundation pit support pile, the anchor rope is arranged in the anchor device and the pressing plate in a penetrating mode, and one end of the anchor rope, penetrating through the waist beam main body, is fixedly connected to the inside of the anchor spraying face, so that the waist beam main body at the anchor spraying face is convenient to fix, and the stability of the whole waist beam main body is further improved;
4. according to the designed precast concrete waist beam for the deep foundation pit support pile, the backing plate is fixed on the support pile side wall, so that the waist beam main body side wall is attached to the backing plate, as one waist beam main body is attached to the plurality of support pile side walls, the possibility that the waist beam main body side wall cannot be attached to the plurality of support pile side walls at the same time due to the fact that the plurality of support pile side walls are not in the same vertical plane is reduced, the waist beam main body is tightly attached to the support pile side walls, and the stability of the waist beam main body is further improved.
Drawings
Fig. 1 is a schematic structural view of a precast concrete waist beam for a deep foundation pit support pile according to an embodiment of the present application;
fig. 2 is a cross-sectional view of a first view of a precast concrete wale for a deep foundation pit support pile according to an embodiment of the present application, intended to illustrate a first fixing assembly;
FIG. 3 is an enlarged view of portion A of FIG. 1;
fig. 4 is a cross-sectional view of a second view of a precast concrete wale for a deep foundation pit support pile according to an embodiment of the present application, intended to illustrate a second fixing assembly;
fig. 5 is an enlarged view of a portion B in fig. 4.
Reference numerals: 1. a wale main body; 11. a placement groove; 2. a connection assembly; 21. a connecting bolt; 22. a connecting plate; 23. a gasket; 24. a rubber pad; 3. a first fixing assembly; 31. anchor bars; 4. a second fixing assembly; 41. an anchor cable; 42. an anchor; 43. a pressing plate; 5. a backing plate; 6. supporting piles; 7. and (5) spraying an anchor surface.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-5.
The embodiment of the application discloses a deep foundation pit support pile precast concrete waist beam.
Referring to fig. 1 and 2, a precast concrete waist beam for deep foundation pit support pile comprises a plurality of sections of waist beam main bodies 1, a connecting component 2 for connecting the end parts of two adjacent sections of waist beam main bodies 1, a first fixing component 3 for fixing the waist beam main bodies 1 with the support pile 6, and a second fixing component 4 for fixing the waist beam main bodies 1 with the spray anchor surface 7, wherein each section of waist beam main bodies 1 is precast, the waist beam main bodies 1 are horizontally arranged, a backing plate 5 is arranged between the waist beam main bodies 1 and the support pile 6, one side of the backing plate 5 is fixedly connected with the side wall of the support pile 6 through bolts, the other side is attached to and abutted against the side wall of the waist beam main bodies 1, the connecting component 2 is arranged at the end parts of the two adjacent waist beam main bodies 1, the first fixing component 3 is arranged on the support pile 6, and the second fixing component 4 is arranged on the spray anchor surface 7.
Prefabricating and curing the waist beam in a prefabrication factory, fixing a backing plate 5 on the side wall of a support pile 6 through bolts, fixing the waist beam main body 1 and the support pile 6 through a first fixing component 3, fixing the waist beam main body 1 and the anchor spraying surfaces 7 between two adjacent support piles 6 through a second fixing component 4, and then connecting the two adjacent waist beams through a connecting component 2, so that the side wall of the waist beam main body 1 is attached to the backing plate 5, and the waist beam is convenient to install; compared with the cast-in-situ reinforced concrete waist beam, the waist beam is prefabricated, and the formwork supporting and maintenance are not needed on the construction site, so that the supporting period of the deep foundation pit supporting pile 6 is shortened, and the labor cost is saved.
Referring to fig. 2, the cross-sectional shape of the wale main body 1 is in a convex quadrilateral configuration, in this embodiment, the length of each section of wale main body 1 is 4-6 m, the top wall of the wale main body 1 is mutually perpendicular to one side of the wale main body 1, which is close to the support pile 6, the included angle between the bottom wall of the wale main body 1 and one side of the wale main body 1, which is close to the support pile 6, is an acute angle, one side of the wale main body 1, which is far from the support pile 6, is perpendicular to the bottom wall of the wale main body 1, a reinforcement cage is adapted in the wale main body 1, the reinforcement cage adopts non-prestressed screw reinforcement, and the grade of the wale main body 1 adopts concrete is C30-C45.
Referring to fig. 1 and 3, the connecting assembly 2 includes two connecting bolts 21 and two opposite connecting plates 22, the two connecting plates 22 are located between two adjacent wale main bodies 1, one connecting plate 22 is integrally connected with one end of one wale main body 1, the other connecting plate 22 is integrally connected with one end of the other wale main body 1, in the application, the number of the connecting bolts 21 can be one, two or three, if the two opposite connecting plates 22 are fixed, in the embodiment, the number of the connecting bolts 21 is two, the connecting bolts 21 are opposite-pulling type high-strength bolts, the two connecting bolts 21 are all arranged through the two connecting plates 22, and a placing groove 11 for placing the connecting bolts 21 is formed in one side, far away from the support pile 6, of the wale main body 1; in order to prevent the nuts of the connecting bolts 21 from loosening, in this embodiment, gaskets 23 are sleeved at two ends of the connecting bolts 21, and the nuts of the connecting bolts 21 are abutted against the gaskets 23; in order to reduce the impact between the two opposite connection plates 22, three rubber pads 24 with the thickness of 10mm are arranged between the two opposite connection plates 22 in the embodiment, and the connection mode is bonding.
Referring to fig. 2, the first fixing assembly 3 includes four or one anchor bar 31, in this application, the number of the anchor bars 31 may be four, but only the waist beam main body 1 and the support pile 6 are fixed, in this embodiment, the number of the anchor bars 31 is four, the four anchor bars 31 penetrate through one end of the waist beam main body 1 and are anchored in the support pile 6, the axial direction of the anchor bars 31 is perpendicular to one side of the waist beam main body 1 far away from the support pile 6, and the diameter of the anchor bars 31 is 20 mm-28 mm; in order to facilitate fixing the four anchor bars 31, in this embodiment, the holes of the four anchor bars 31 penetrating through the body 1 of the wale are filled with the bar planting glue.
Referring to fig. 4 and 5, the second fixing assembly 4 includes an anchor cable 41, an anchor 42 and a pressing plate 43, the pressing plate 43 is fixedly connected to the side of the wale main body 1 far away from the support pile 6 in a bolt connection manner, one end of the anchor 42 is welded with the pressing plate 43, the anchor cable 41 penetrates through the anchor 42, the pressing plate 43 and the wale main body 1, one end of the anchor cable 41 penetrates through the wale main body 1 to be anchored in the anchor spraying surface 7, and the axial direction of the anchor cable 41 is perpendicular to the side of the wale main body 1 far away from the anchor spraying surface 7; in order to fix the anchor cable 41 conveniently, in this embodiment, after the anchor cable 41 is tensioned, grouting treatment is performed on the hole penetrated by the anchor cable 41, and the strength grade of grouting concrete is in the range of C60-C80.
The implementation principle of the deep foundation pit support pile precast concrete waist beam is as follows: prefabricating and curing a waist beam in a prefabrication factory, fixing a backing plate 5 on the side wall of a support pile 6 through bolts, fixing a support component for supporting a waist beam main body 1 on the side wall of the support pile 6, hoisting a section of waist beam main body 1 to the installation position of the support pile 6 through a crane, enabling one side of the waist beam main body 1 close to the support pile 6 to be attached to the backing plate 5, enabling four anchor bars 31 to penetrate through the waist beam main body 1 and the backing plate 5 and be anchored in the support pile 6, filling a hole of the waist beam main body 1 with a tendon implanting glue in the hole of the four anchor bars 31, connecting a pressing plate 43 on the side, far away from an anchor spraying face 7, of the waist beam main body 1 through bolts, enabling anchor ropes 41 to penetrate through anchor devices 42, the pressing plate 43, the waist beam main body 1 and the backing plate 5, enabling one end, which penetrates through the backing plate 5, of the anchor ropes 41 to be anchored in the anchor spraying face 7, and grouting the hole, which the anchor ropes 41 penetrate after stretching the anchor ropes 41; when two adjacent sections of waist rail main bodies 1 are required to be connected, two connecting plates 22 close to one side of the two adjacent sections of waist rail main bodies 1 are opposite to each other, three rubber pads 24 are bonded between the two connecting plates 22, and then the two connecting plates 22 are fixedly connected through connecting bolts 21, so that the two adjacent sections of waist rail main bodies 1 are convenient to connect; compared with the cast-in-situ reinforced concrete waist beam, the waist beam is prefabricated, and the formwork supporting and maintenance are not needed on the construction site, so that the supporting period of the deep foundation pit supporting pile 6 is shortened, and the labor cost is saved.
The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (8)
1. A deep basal pit support stake precast concrete waist rail, its characterized in that: the multi-section waist beam comprises a plurality of sections of waist beam main bodies (1), connecting assemblies (2) used for connecting the end parts of two adjacent waist beam main bodies (1), a first fixing assembly (3) used for fixing the waist beam main bodies (1) and supporting piles (6) and a second fixing assembly (4) used for fixing the waist beam main bodies (1) and a spraying anchor surface (7);
each waist beam main body (1) is prefabricated, and the waist beam main bodies (1) are horizontally arranged;
the connecting components (2) are arranged at the end parts of two adjacent waist beam main bodies (1), the first fixing components (3) are arranged on the supporting piles (6), and the second fixing components (4) are arranged on the spraying anchor surfaces (7).
2. The deep foundation pit support pile precast concrete wale according to claim 1, wherein: the connecting assembly (2) comprises a connecting bolt (21) and two connecting plates (22) which are opposite to each other;
two connecting plates (22) are located between two adjacent waist beam main bodies (1), one connecting plate (22) is fixedly connected with one end of the waist beam main body (1), the other connecting plate (22) is fixedly connected with the other end of the waist beam main body (1), connecting bolts (21) penetrate through the two connecting plates (22) and are arranged, and a placing groove (11) for placing the connecting bolts (21) is formed in the waist beam main body (1).
3. The deep foundation pit support pile precast concrete wale according to claim 1, wherein: the first fixing assembly (3) comprises anchor bars (31), and the anchor bars (31) penetrate through one end of the waist beam main body (1) to be fixedly connected inside the support piles (6).
4. The deep foundation pit support pile precast concrete wale according to claim 2, wherein: the second fixing assembly (4) comprises an anchor rope (41), an anchor device (42) and a pressing plate (43);
the clamp plate (43) rigid coupling in waist rail main part (1) keep away from support stake (6) one side, ground tackle (42) one end with clamp plate (43) rigid coupling, anchor rope (41) run through ground tackle (42), clamp plate (43) and waist rail main part (1), anchor rope (41) run through waist rail main part (1) one end rigid coupling is in spouting anchor face (7) inside.
5. The deep foundation pit support pile precast concrete wale according to claim 1, wherein: the cross-sectional shape of the waist beam main body (1) is arranged in a convex quadrilateral mode, the top wall of the waist beam main body (1) is perpendicular to one side, close to the support pile (6), of the waist beam main body (1), and an included angle between the bottom wall of the waist beam main body (1) and one side, close to the support pile (6), of the waist beam main body (1) is an acute angle.
6. The deep foundation pit support pile precast concrete wale according to claim 1, wherein: backing plates (5) are arranged between the waist beam main body (1) and the support piles (6), one sides of the backing plates (5) are fixedly connected with the side walls of the support piles (6), and the other sides of the backing plates are attached to the side walls of the waist beam main body (1).
7. The deep foundation pit support pile precast concrete wale according to claim 2, wherein: a gasket (23) is sleeved on the connecting bolt (21), and a nut of the connecting bolt (21) is abutted to the gasket (23).
8. The deep foundation pit support pile precast concrete wale according to claim 2, wherein: a rubber pad (24) is arranged between the two opposite connecting plates (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320172309.3U CN219175265U (en) | 2023-02-09 | 2023-02-09 | Precast concrete waist beam for deep foundation pit support pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320172309.3U CN219175265U (en) | 2023-02-09 | 2023-02-09 | Precast concrete waist beam for deep foundation pit support pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219175265U true CN219175265U (en) | 2023-06-13 |
Family
ID=86675721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320172309.3U Active CN219175265U (en) | 2023-02-09 | 2023-02-09 | Precast concrete waist beam for deep foundation pit support pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219175265U (en) |
-
2023
- 2023-02-09 CN CN202320172309.3U patent/CN219175265U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101630235B1 (en) | Precast truss wall structure and construction method of underground structure using thereof | |
| US20200102751A1 (en) | Precast column base joint and construction method therefor | |
| CN203475598U (en) | Shock-proof prefabricated building of steel bar truss shearing wall composite structure | |
| KR102240257B1 (en) | Precast wall reinforced with built-in pressure resistance | |
| KR20060024850A (en) | Steel-concrete sandwitch type hybrid beam and high strength hybrid structure system using the same | |
| KR101025892B1 (en) | Concrete steel house | |
| CN110805144B (en) | Full-assembly type high-rise/super high-rise concrete frame support structure system and construction method thereof | |
| CN110396919B (en) | Assembled steel structure-concrete combined bridge and construction method thereof | |
| CN111877140A (en) | Connecting structure for segment prefabricated assembled pier combination and construction method | |
| CN103821289A (en) | Connection and installation construction method for earthquake collision and damage preventing on support of prefabricated stair | |
| CN105752864A (en) | Tower crane attachment joint and construction method thereof | |
| CN219175265U (en) | Precast concrete waist beam for deep foundation pit support pile | |
| CN112942945A (en) | Assembled tenon fourth of twelve earthly branches bracket type beam column node connecting device | |
| CN111364520A (en) | Prefabricated multi-way cable well and construction method thereof | |
| KR102004854B1 (en) | Aseismatic Reinforcement Steel Frame with Anchor Plate and Aseismatic Reinforcement Method using thereof | |
| CN211872631U (en) | Connecting device for bridge panels | |
| CN211446606U (en) | Segment beam temporary prestress tensioning platform and lifting point integrated structure | |
| KR102308853B1 (en) | Repair and rehabilitation system of structures using Seismic retrofit member and FRP formwork panels | |
| CN113047327A (en) | Multi-connected-cylinder rectangular assembled well wall structure and assembling method thereof | |
| CN110700274A (en) | Mechanically-connected assembled stand column and stand column pile | |
| JP5356010B2 (en) | Foundation reinforcement structure | |
| CN111155365A (en) | Assembled floating unit plate and assembling connection construction method | |
| CN111424847A (en) | Self-resetting connecting node of steel tube bundle combined shear wall and steel beam | |
| CN115030400B (en) | High-strength flexible rope connected combined wallboard structure system | |
| CN220226346U (en) | Foundation pit top inclined enclosing wall reinforcing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |