CN219410893U - Foundation pit supporting structure for foundation pit excavation - Google Patents
Foundation pit supporting structure for foundation pit excavation Download PDFInfo
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- CN219410893U CN219410893U CN202320747460.5U CN202320747460U CN219410893U CN 219410893 U CN219410893 U CN 219410893U CN 202320747460 U CN202320747460 U CN 202320747460U CN 219410893 U CN219410893 U CN 219410893U
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- foundation pit
- supporting
- excavation
- plugboards
- foundation
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- 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
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Abstract
The application relates to a foundation pit supporting structure for foundation pit excavation, which relates to the field of constructional engineering technology, and comprises a plurality of supporting baffles, wherein the supporting baffles are spliced into a rectangular frame; the supporting baffle comprises a plurality of plugboards and four connecting seats, wherein the plugboards are attached to one inner side wall of a foundation pit, a plug groove is formed in one side of each plugboard, plug bars are fixed on the other side of each plugboard, the plug bars of one plugboard are plugged into the plug grooves of the other plugboard, the four connecting seats are respectively located at corners of two adjacent side walls of the foundation pit, and the connecting seats can fix two adjacent plugboards at the corners of the two adjacent side walls of the foundation pit. The application has the effect of improving and can cause the damage to the foundation ditch.
Description
Technical Field
The application relates to the field of constructional engineering technology, in particular to a foundation pit supporting structure for foundation pit excavation.
Background
In building construction, in order to ensure the construction safety of foundation pit excavation and foundation structure, can set up foundation pit supporting construction in the foundation pit excavation construction, make the foundation pit lateral wall can obtain reinforcement and protection.
In the related art, application number 201520617626.7 discloses a foundation pit support, the hole is put slope foundation ditch, lower part perpendicular foundation ditch by upper portion and is put the slope of putting that slope foundation ditch is formed with the slope that sets for from the foundation ditch surface, lower part perpendicular foundation ditch is with the cement mixing pile that is located peripheral a plurality of according to certain interval arrangement of foundation ditch as supporting, be equipped with the I-steel in the cement mixing pile, the surface of upper portion is put slope foundation ditch and lower part perpendicular foundation ditch all is equipped with and hangs the net region, when supporting the foundation ditch, in just processing cement mixing pile has not solidified and is put into the cement mixing pile, lay the reinforcing bar net on the side slope surface of lower part perpendicular foundation ditch, support at spraying one deck concrete.
According to the related technology, I-steel is placed in the cement mixing pile, then, a reinforcing steel bar net is paved on the side slope surface of the lower vertical foundation pit, and a layer of concrete is sprayed to support, but when the supporting structure is required to be taken out after the foundation pit is supported, the supporting structure is not easy to take out, and damage to the foundation pit can be caused.
Disclosure of Invention
In order to improve the problem that can cause the damage to the foundation ditch, this application provides a foundation ditch supporting construction that foundation ditch excavation was used.
The application provides a foundation ditch supporting structure that foundation ditch excavation was used adopts following technical scheme:
the foundation pit supporting structure for foundation pit excavation comprises a plurality of supporting baffles, wherein the supporting baffles are spliced into a rectangular frame;
the supporting baffle comprises a plurality of plugboards and four connecting seats, wherein the plugboards are attached to one inner side wall of a foundation pit, a plug groove is formed in one side of each plugboard, plug bars are fixed on the other side of each plugboard, the plug bars of one plugboard are plugged into the plug grooves of the other plugboard, the four connecting seats are respectively located at corners of two adjacent side walls of the foundation pit, and the connecting seats can fix two adjacent plugboards at the corners of the two adjacent side walls of the foundation pit.
Through adopting the technical scheme, when the foundation pit is required to be supported, firstly, personnel take out a plurality of plugboards, then, the plugboards are respectively inserted into the foundation pit, each plugboard is attached to one inner side wall of the foundation pit, at the moment, the plug strip of one plugboard can be inserted into the plug groove of the other plugboard, the plugboards positioned on one inner side wall of the foundation pit are plugged through two adjacent plugboards, then, the connecting seats are taken out, the connecting seats are placed at the corners of the two adjacent side walls of the foundation pit, and the supporting baffle plates are formed by the connecting seats and the plugboards, so that the foundation pit can be spliced into a rectangular frame, and the foundation pit can be supported; when need demolish to a retaining plate, take out the foundation ditch in proper order with picture peg and connecting seat can, compare with the correlation technique, this application takes out the foundation ditch in proper order picture peg and connecting seat, can demolish a retaining plate, is favorable to reducing the condition to the foundation ditch damage.
Optionally, the bottom wall of the plugboard is fixed with at least one insertion pile, and one side of the insertion pile, which is far away from the plugboard, is provided with a pointed end.
Through adopting above-mentioned technical scheme, the picture peg diapire is equipped with sharp-shaped insertion stake, after the picture peg inserts the foundation ditch, inserts the stake and can insert the foundation ditch lateral wall, through setting up the insertion stake, is convenient for insert the picture peg in the foundation ditch on the one hand, on the other hand also can support the picture peg.
Optionally, a sliding groove is formed in one side, close to each other, of the two opposite inserting plates, the setting direction of the sliding groove is from the opening of the foundation pit to the bottom wall of the foundation pit, a sliding block is arranged in the sliding groove, and the sliding block can slide in the sliding groove along the length direction of the sliding groove;
the foundation ditch supporting structure that foundation ditch excavation was used still includes inserts the subassembly, it includes extensible member and unable adjustment base to insert the subassembly, extensible member slope sets up, the extensible member is located the rectangle frame, the higher one end of extensible member articulate in the slider, the lower one end of extensible member with unable adjustment base articulates, unable adjustment base level sets up, unable adjustment base installs in the foundation ditch diapire, the extensible member can support the picture peg.
Through adopting above-mentioned technical scheme, after the picture peg inserts the foundation ditch, at first with the extensible member according to personnel's needs adjustment to suitable position, at the in-process of extensible member adjustment, the slider can follow the spout and slide, later, installs unable adjustment base in the foundation ditch diapire, inserts the subassembly through setting up, is favorable to fixing the picture peg.
Optionally, the insert assembly still includes the bolt, the bolt is located unable adjustment base is kept away from extensible member one side, the setting direction of bolt with insert the setting direction of stake unanimous, the bolt is fixed in unable adjustment base, the bolt is kept away from unable adjustment base one end is the tip, the bolt can insert the foundation ditch diapire.
Through adopting above-mentioned technical scheme, adjust to suitable position when the extensible member, insert the foundation ditch lateral wall with the bolt this moment, can install unable adjustment base in the foundation ditch diapire, through setting up the bolt, be favorable to fixed to unable adjustment base.
Optionally, the device further comprises a plurality of supporting devices, wherein the supporting devices are used for supporting the two opposite supporting baffles, and the supporting devices are detachably connected with the supporting baffles.
Through adopting above-mentioned technical scheme, through setting up strutting arrangement, can support two supporting baffles just right on the one hand, strengthen the steadiness of supporting, can dismantle with supporting baffle through strutting arrangement and be connected, be convenient for take out strutting arrangement from between the supporting baffle.
Optionally, the supporting device comprises a connecting assembly and a supporting assembly, the connecting assembly comprises connecting plates and connecting rods, the connecting plates are respectively positioned opposite to one side, close to each other, of the two plugboards, the connecting plates are detachably connected with the plugboards, the connecting rods are positioned on one side, far away from the plugboards, of the connecting plates, and the connecting rods are mounted on the connecting plates;
the support assembly comprises a plurality of support rods, the support rods are horizontally arranged, the connecting rods are inserted into one ends of the support rods, and the connecting rods are in threaded connection with the connecting rods.
Through adopting above-mentioned technical scheme, when needing installation strutting arrangement, firstly, install connecting plate and connecting rod, afterwards, can dismantle the connecting plate with the picture peg and be connected, afterwards, be close to the connecting rod that is located just on two picture peg with the bracing piece, make the connecting rod insert the bracing piece, twist the bracing piece soon, can fix bracing piece and connecting rod, through setting up bracing piece and connecting rod, can support supporting baffle, bracing piece and connecting rod threaded connection, the dismantlement and the installation of bracing piece and connecting rod of being convenient for.
Optionally, the supporting device further comprises an adjusting component, the adjusting component comprises an adjusting piece, the adjusting piece is located between the two supporting rods, and the adjusting piece is detachably connected with the supporting rods.
Through adopting above-mentioned technical scheme, when needs increase bracing piece length, be connected bracing piece one end with the connecting rod, the other end is connected with the regulating part, later, take out another bracing piece to it is fixed with the regulating part other end, through setting up the regulating part, be convenient for increase bracing piece length.
Optionally, the connecting rod is hinged to the connecting plate.
Through adopting above-mentioned technical scheme, through connecting rod and connecting plate articulated, when needs with bracing piece and connecting rod threaded connection, can rotate different angles with the connecting rod, be favorable to bracing piece and connecting rod to be connected.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when the supporting baffle needs to be dismantled, the inserting plate and the connecting seat are sequentially taken out of the foundation pit, and compared with the related art, the foundation pit is sequentially taken out of the inserting plate and the connecting seat, so that the supporting baffle can be dismantled, and the damage to the foundation pit is reduced;
2. by arranging the insertion piles, the insertion plate is convenient to insert into the foundation pit on one hand, and can be supported on the other hand;
3. through setting up bracing piece and connecting rod, can support the fender baffle, bracing piece and connecting rod threaded connection, the dismantlement and the installation of bracing piece and connecting rod of being convenient for.
Drawings
Fig. 1 is a schematic view of the overall structure in the present embodiment;
FIG. 2 is a schematic view of the structure of the insert assembly in this embodiment;
FIG. 3 is an enlarged view of A in FIG. 2;
FIG. 4 is an enlarged view of B in FIG. 2;
fig. 5 is a schematic view of the structure of the supporting baffle and the supporting device in the present embodiment;
FIG. 6 is an enlarged view of C in FIG. 5;
fig. 7 is an enlarged view of D in fig. 5.
Reference numerals illustrate: 1. a supporting baffle; 11. inserting plate; 111. a plug-in groove; 112. a plug strip; 113. inserting piles; 114. an insertion hole; 115. a chute; 116. a slide block; 12. a connecting seat; 121. a slot; 122. cutting; 2. an insert assembly; 21. a telescoping member; 211. a first plunger; 2111. a connection hole; 212. a second plunger; 2121. a screw; 22. a fixed base; 23. a plug pin; 3. a support device; 31. a connection assembly; 311. a connecting plate; 3111. a first fastener; 312. a connecting rod; 32. a support assembly; 321. a support rod; 3211. a plug hole; 33. an adjustment assembly; 331. an adjusting member; 3311. a jack; 3312. and a second fastener.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-7.
The embodiment of the application discloses foundation pit supporting structure for foundation pit excavation. Referring to fig. 1 and 2, a foundation pit supporting structure for excavation of a foundation pit includes a plurality of supporting baffles 1, a plurality of insertion assemblies 2 and a plurality of supporting devices 3, in this embodiment, the number of the supporting baffles 1 is eight, the eight supporting baffles 1 are divided into two groups, four supporting baffles 1 in the two groups are respectively spliced into a rectangular frame structure, one rectangular frame is located above the other rectangular frame, the opposite supporting baffles 1 are supported by at least one supporting device 3, and in this embodiment, the opposite supporting baffles 1 are supported by one supporting device 3.
Referring to fig. 1 and 2, the supporting baffle 1 includes a plurality of plugboards 11 and four connecting seats 12, the plugboards 11 are attached to one inner side wall of the foundation pit, in this embodiment, one supporting baffle 1 is formed by splicing three plugboards 11, the plugboards 11 are rectangular plates which are vertically placed, a plugboard groove 111 is formed in one side of each plugboard 11, a plugboard strip 112 is formed in the other side of each plugboard 11, the plugboards 112 are welded to the plugboards 11, when two adjacent plugboards 11 are spliced, the plugboard strips 112 on one plugboard 11 are inserted into the plugboard groove 111 on the other plugboard 11, the four connecting seats 12 are located at corners of two adjacent side walls of the foundation pit, in this embodiment, the connecting seats 12 are L-shaped, a slot 121 for plugging the plugboard strips 112 on the plugboard 11 is formed in one end of each connecting seat 12, a plugboard 122 is formed in the other end, the plugboard 122 can be inserted into the plugboard groove 111 on the plugboard 11, and the plugboard 122 is welded to the connecting seats 12; at least one insertion pile 113 is welded to the bottom wall of each insertion plate 11, in this embodiment, one insertion pile 113 is welded to the bottom wall of each insertion plate 11, the bottom end of each insertion pile 113 is pointed, and an insertion hole 114 for inserting the insertion pile 113 of the other insertion plate 11 is formed in the side of the insertion plate 11 away from the insertion pile 113.
Referring to fig. 1, 2 and 3, two opposite insertion plates 11 are provided with a sliding groove 115 at one side close to each other, the arrangement direction of the sliding groove 115 is from the opening of the foundation pit to the bottom wall of the foundation pit, the sliding groove 115 of the upper insertion plate 11 is communicated with the sliding groove 115 of the lower insertion plate 11, in this embodiment, the longitudinal section of the sliding groove 115 is in a T shape, the insertion plate 11 is provided with a sliding block 116 in the sliding groove 115, in this embodiment, the longitudinal section of the sliding block 116 is in a T shape, the sliding block 116 can be attached to the wall of the sliding groove 115, the sliding block 116 can slide in the sliding groove 115 along the length direction of the sliding groove 115, when the sliding block 116 slides to a proper position, the sliding block 116 is connected to the insertion plate 11 through a screw, the insertion assembly 2 comprises a telescopic piece 21, a fixed base 22 and a plug pin 23, the telescopic piece 21 is obliquely arranged, the telescopic piece 21 is positioned in a rectangular frame, the higher end of the telescopic piece 21 is hinged to the sliding block 116, the lower end of the telescopic member 21 is hinged to the fixing base 22, in this embodiment, the telescopic member 21 includes a first inserting rod 211 and a second inserting rod 212, one end of the first inserting rod 211 is hinged to the sliding block 116, the other end of the first inserting rod 211 is inserted into the second inserting rod 212, a connecting hole 2111 is formed in one end of the first inserting rod 211, which is close to the second inserting rod 212, a plurality of connecting holes 2111 are arranged along the length direction of the first inserting rod 211, a screw 2121 is arranged on the second inserting rod 212, the screw 2121 penetrates through the second inserting rod 212 and then stretches into the connecting hole 2111, the screw 2121 can fix the second inserting rod 212 and the first inserting rod 211, the fixing base 22 is horizontally arranged, a bolt 23 is located on one side of the fixing base 22, the setting direction of the bolt 23 is consistent with the setting direction of the inserting pile 113, the bolt 23 is welded to the fixing base 22, and one end of the bolt 23, which is far away from the fixing base 22, is a pointed end.
Referring to fig. 4, the supporting device 3 includes a connection assembly 31, a supporting assembly 32, and an adjusting assembly 33, and the adjusting assembly 33 is disposed on the supporting assembly 32.
Referring to fig. 5 and 6, in this embodiment, two opposite insert plates 11 are connected to a connecting assembly 31 on the side close to each other, the connecting assembly 31 includes a connecting plate 311 and a connecting rod 312, a first fastening member 3111 is disposed on the connecting plate 311, the first fastening member 3111 is threaded to the insert plate 11 after penetrating through the connecting plate 311, the first fastening member 3111 is threaded to the connecting plate 311, the connecting rod 312 is located on the side of the connecting plate 311 away from the insert plate 11, the connecting rod 312 is hinged to the connecting plate 311, and the connecting rod 312 is fixed to the support assembly 32 on the side away from the hinged end.
Referring to fig. 5 and 7, the supporting component 32 includes a plurality of supporting rods 321, the supporting rods 321 are located between two opposite plugboards 11, the supporting rods 321 are horizontally arranged, one end of the connecting rod 312, which is far away from the hinged end, is inserted into one end of the supporting rods 321, the connecting rod 312 is connected with the supporting rods 321 in a threaded manner, one end of the supporting rods 321, which is far away from the connecting seat 12, is detachably connected with the adjusting component 33, a plurality of plug holes 3211 are formed in one end of the supporting rods 321, which is close to the adjusting component 33, and the plurality of plug holes 3211 are arranged in the length direction of the supporting rods 321.
Referring to fig. 5 and 7, the adjusting component 33 includes an adjusting member 331, in this embodiment, a longitudinal section of the adjusting member 331 is rectangular, two ends of the adjusting member 331 are provided with insertion holes 3311 into which the supporting rods 321 are inserted, the adjusting member 331 is provided with second fastening members 3312 at the insertion holes 3311, the second fastening members 3312 sequentially penetrate through the adjusting member 331 and the supporting rods 321, the second fastening members 3312 can extend into the insertion holes 3211, in this embodiment, the second fastening members 3312 are bolts, and the second fastening members 3312 can fix the adjusting member 331 and the supporting rods 321.
The implementation principle of the foundation pit supporting structure for foundation pit excavation is as follows: when the foundation pit is required to be supported, firstly, the plugboards 11 are spliced and fixed to form the supporting baffle 1, then, the supporting baffle 1 is inserted into the foundation pit, the supporting baffle 1 is attached to the side wall of the foundation pit, the inserting piles 113 can be inserted into the bottom of the foundation pit, two adjacent plugboards 11 positioned at the corners of the foundation pit are connected through the connecting seat 12, and the supporting assembly 32 is fixed between the two plugboards 11 which are opposite according to the size of the foundation pit.
When the supporting device 3 needs to be installed, the two connecting plates 311 are taken out, the two connecting plates 311 are respectively fixed on the two plugboards 11 which are opposite to each other and are close to one side, the first fastening piece 3111 is screwed, the first fastening piece 3111 can fix the connecting plates 311 and the plugboards 11, then the supporting rod 321 is taken out, the connecting rod 312 is inserted into one end of the supporting rod 321, the supporting rod 321 and the connecting rod 312 can be fixed by screwing the supporting rod 321, one end of the supporting rod 321 far away from the connecting rod 312 is close to one side of the adjusting piece 331, the supporting rod 321 is inserted into the jack 3311, the second fastening piece 3312 sequentially penetrates through the adjusting piece 331 and the supporting rod 321, and the second fastening piece 3312 fixes the adjusting piece 331 and the supporting rod 321; after that, according to the above steps, the other support bar 321 is fixed to the other side of the adjuster 331, and according to the above operations, the remaining support bar 321 is fixed between the two insert plates 11 facing each other.
When the height of the supporting baffle plate 1 needs to be increased, the rest supporting baffle plates 1 are taken out, and a worker uses a crane to hoist the supporting baffle plate 1 to the upper part of the foundation pit, so that the inserting piles 113 of the supporting baffle plate 1 positioned above can be inserted into the corresponding inserting holes 114 of the supporting baffle plate 1 positioned below.
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. The utility model provides a foundation ditch supporting construction that foundation ditch excavation was used which characterized in that: the device comprises a plurality of supporting baffles (1), wherein the supporting baffles (1) are spliced into a rectangular frame;
the supporting baffle plate (1) comprises a plurality of inserting plates (11) and four connecting seats (12), the inserting plates (11) are attached to one inner side wall of a foundation pit, inserting grooves (111) are formed in one side of each inserting plate (11), inserting strips (112) are fixed to the other side of each inserting plate, the inserting strips (112) of one inserting plate (11) are inserted into the inserting grooves (111) of the other inserting plate (11), the four connecting seats (12) are respectively located at the corner of two adjacent side walls of the foundation pit, and the connecting seats (12) can fix two adjacent inserting plates (11) at the corner of two adjacent side walls of the foundation pit.
2. The foundation pit supporting structure for excavation of a foundation pit according to claim 1, wherein: the bottom wall of the plugboard (11) is fixedly provided with at least one insertion pile (113), and one side, far away from the plugboard (11), of the insertion pile (113) is provided with a pointed end.
3. The foundation pit supporting structure for excavation of a foundation pit according to claim 2, wherein: a sliding groove (115) is formed in one side, close to each other, of the two opposite plugboards (11), the arrangement direction of the sliding groove (115) is from the opening of the foundation pit to the bottom wall of the foundation pit, a sliding block (116) is arranged in the sliding groove (115) of the plugboards (11), and the sliding block (116) can slide in the sliding groove (115) along the length direction of the sliding groove (115);
the foundation pit supporting structure for foundation pit excavation further comprises an inserting assembly (2), the inserting assembly (2) comprises a telescopic piece (21) and a fixing base (22), the telescopic piece (21) is obliquely arranged, the telescopic piece (21) is located in a rectangular frame, the higher end of the telescopic piece (21) is hinged to the sliding block (116), the lower end of the telescopic piece (21) is hinged to the fixing base (22), the fixing base (22) is horizontally arranged, the fixing base (22) is mounted on the bottom wall of the foundation pit, and the telescopic piece (21) can support the inserting plate (11).
4. A pit supporting structure for pit excavation according to claim 3, wherein: the inserting assembly (2) further comprises a bolt (23), the bolt (23) is located on one side, away from the telescopic piece (21), of the fixing base (22), the setting direction of the bolt (23) is consistent with the setting direction of the inserting piles (113), the bolt (23) is fixed on the fixing base (22), one end, away from the fixing base (22), of the bolt (23) is a pointed end, and the bolt (23) can be inserted into the bottom wall of a foundation pit.
5. A pit supporting structure for pit excavation according to claim 3, wherein: the device further comprises a plurality of supporting devices (3), wherein the supporting devices (3) are used for supporting the two opposite supporting baffles (1), and the supporting devices (3) are detachably connected with the supporting baffles (1).
6. The foundation pit supporting structure for excavation of a foundation pit according to claim 5, wherein: the supporting device (3) comprises a connecting assembly (31) and a supporting assembly (32), the connecting assembly (31) comprises connecting plates (311) and connecting rods (312), the connecting plates (311) are respectively positioned opposite to the two plugboards (11) and close to each other, the connecting plates (311) are detachably connected to the plugboards (11), the connecting rods (312) are positioned on one side, away from the plugboards (11), of the connecting plates (311), and the connecting rods (312) are arranged on the connecting plates (311);
the support assembly (32) comprises a plurality of support rods (321), the support rods (321) are horizontally arranged, the connecting rods (312) are inserted into one ends of the support rods (321), and the connecting rods (312) are in threaded connection with the connecting rods (312).
7. The foundation pit supporting structure for excavation of a foundation pit of claim 6, wherein: the supporting device (3) further comprises an adjusting component (33), the adjusting component (33) comprises an adjusting piece (331), the adjusting piece (331) is located between the two supporting rods (321), and the adjusting piece (331) is detachably connected with the supporting rods (321).
8. The foundation pit supporting structure for excavation of a foundation pit of claim 6, wherein: the connecting rod (312) is hinged to the connecting plate (311).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320747460.5U CN219410893U (en) | 2023-04-06 | 2023-04-06 | Foundation pit supporting structure for foundation pit excavation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320747460.5U CN219410893U (en) | 2023-04-06 | 2023-04-06 | Foundation pit supporting structure for foundation pit excavation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219410893U true CN219410893U (en) | 2023-07-25 |
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ID=87241657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320747460.5U Active CN219410893U (en) | 2023-04-06 | 2023-04-06 | Foundation pit supporting structure for foundation pit excavation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219410893U (en) |
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2023
- 2023-04-06 CN CN202320747460.5U patent/CN219410893U/en active Active
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