CN214143735U - Composite supporting structure for foundation pit - Google Patents
Composite supporting structure for foundation pit Download PDFInfo
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- CN214143735U CN214143735U CN202023099439.4U CN202023099439U CN214143735U CN 214143735 U CN214143735 U CN 214143735U CN 202023099439 U CN202023099439 U CN 202023099439U CN 214143735 U CN214143735 U CN 214143735U
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Abstract
The utility model provides a composite supporting structure of a foundation pit, which is characterized in that a cell supporting pile is vertically drilled in the soil body of the wall back, and the bottom end of the cell supporting pile is grouted to form a wall back reinforcing area; the bottom end of the balance body arrangement groove is provided with a wall back balance plate connected with the concrete cast-in-place pile, and the upper surface of the wall back balance plate is provided with a weight balance body; the supporting transverse plate is firmly connected with the concrete cast-in-place pile through the pile side clamping plate and the top supporting plate connecting bolt, and a clamping plate supporting lacing wire is arranged between the pile side clamping plate and the wall back balance plate; the assembled block is fastened through a transverse tie bar, and a position control connecting bolt and post-cast concrete are arranged between the fixed end plate and the sliding end plate. The utility model discloses can improve the atress performance of bored concrete pile and prestressing force lacing wire, improve the efficiency of laying of assembled hat roof beam.
Description
Technical Field
The utility model relates to a excavation supporting field, in particular to can improve the atress performance of bored concrete pile and prestressing force lacing wire, improve the assembled hat roof beam and lay the foundation ditch combined type supporting construction of efficiency.
Background
With the rapid development of social economy, the process of urbanization construction is accelerated continuously, and many large buildings begin to build basements or other underground projects due to the restriction of urban space. Furthermore, the foundation pit supporting technology is widely applied and developed, but is limited by construction machinery and construction environment, and the problems of poor stress performance of the concrete cast-in-place pile and the prestressed lacing wire, low field construction efficiency and the like exist in the construction process.
In the prior art, a composite supporting structure of a foundation pit is provided, wherein a prefabricated reinforced concrete square pile is fixed in a side soil foundation of a deep foundation pit, then a jet grouting pile is fixed in the prefabricated reinforced concrete square pile, a fixing frame is fixed at the upper end of the jet grouting pile, the jet grouting pile is fixed through a fixing disc, and sectional type protective pillars with corresponding lengths are assembled according to the depth of the foundation pit; during the lower extreme of sectional type protection pillar inserted the foundation ditch, the upper end card realized the fixed of sectional type protection pillar in the slotted hole of mount, strutted through sectional type protection pillar, improved the steady safety of dimension of foundation ditch. The technology introduces the assembled supporting structure into the foundation pit supporting engineering, can improve the field construction efficiency to a certain extent, but is difficult to synchronously improve the stress performance of the concrete cast-in-place pile and the prestressed lacing wire.
In view of this, in order to improve the construction quality and efficiency of a deep foundation pit supporting system, the invention of a foundation pit composite supporting structure capable of improving the stress performance of a concrete cast-in-place pile and a prestressed lacing wire and improving the laying efficiency of an assembled type crown beam is urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to not only can improve the atress performance of bored concrete pile and prestressing tendons, can improve the excavation combined type supporting construction who lays efficiency of assembled hat roof beam moreover.
In order to achieve the above object, the present technical solution provides a composite supporting structure for foundation pit, including: vertical drilling is carried out on cell support piles arranged on the inner edge of the wall back soil body, grouting is carried out on the bottom ends of the cell support piles to form a wall back reinforcing area, vertical longitudinal ribs are arranged on the side sides of the wall back soil body at intervals, transverse tie bars are arranged at the top ends of the vertical longitudinal ribs on two sides, built-in connecting ribs are arranged among the transverse tie bars, and concrete filling piles are filled among the vertical longitudinal ribs; the bottom end of the balance body laying groove is provided with a wall back balance plate connected with a concrete cast-in-place pile; the support diaphragm is arranged on the cast-in-place concrete pile, the support diaphragm and the built-in connecting rib are connected through the jacking plate connecting bolt, and the pile side splint centre gripping of support diaphragm lower surface is in the cast-in-place concrete pile both sides, set up the assembled block between the crown beam guide slot of support diaphragm upper surface, it props the lacing wire to set up splint between the pile side splint and the wall back of the body balance board near wall back of the body balance board one side, set up the jacking plate lacing wire between wall back of the body balance board and the support diaphragm, the space in groove is laid to the balancing body of crown beam guide slot avris is filled with and is pressed heavy balancing body, prestressing force lacing wire one end inserts in the wall back of the body from the cast-in-place concrete pile, the other end is anchored on the pile side.
Compared with the prior art, the technical scheme has the following characteristics and beneficial effects:
(1) the utility model has the advantages that the lattice support piles are vertically drilled in the wall back soil body, so that the wall back soil body can be partitioned, and the wall back soil pressure is effectively reduced; meanwhile, a wall back reinforcing area is formed by grouting at the bottom end of the area grid support pile, so that the effect of reducing the pressure stress of the prestressed lacing wire can be achieved, and the pulling resistance of the prestressed lacing wire is improved.
(2) The utility model discloses the wall back of the body balance plate of being connected with the bored concrete pile has been set up to the bottom of laying the groove at the balancing body to set up the ballast balance body at the upper surface of wall back of the body balance plate, can play the effect that reduces wall back of the body soil pressure, improve the atress performance of bored concrete pile.
(3) The utility model has the advantages that the supporting diaphragm and the concrete filling pile are firmly connected through the pile side clamping plate and the top supporting plate connecting bolt, and the clamping plate supporting lacing wire is arranged between the pile side clamping plate and the wall back balance plate, so that the stability of the supporting diaphragm can be further improved; and simultaneously, the utility model discloses set up the assembled block between fixed end plate and the end plate that slides, through horizontal drawknot muscle fastening assembled block, set up accuse position connecting bolt and post-cast concrete between fixed end plate and the end plate that slides, can effectively promote the wholeness of assembled hat roof beam.
Drawings
FIG. 1 is a schematic view of the composite supporting structure of the foundation pit of the present invention;
FIG. 2 is a schematic view of the layout structure of the assembled crown beam of FIG. 1;
fig. 3 is a schematic view of a connection structure of the wall back balance plate and the cast-in-place concrete pile in fig. 1.
In the figure: 1-filling concrete into piles; 2-vertical longitudinal ribs; 3-wall back soil body; 4-area grid support piles; 5-wall back reinforcing area; 6-combined anchor bars; 7-reinforcing sleeve; 8-built-in connecting ribs; 12-supporting a transverse plate; 10-a balancing body arrangement groove; 11-wall back balance board; 9-transverse tie bars; (in the light of the description of the two, understand the name of the number 9 and the number 12 in the original manuscript is wrong, and the number of the figure 1 needs to be changed) 13-pile side clamping plate; 14-a crown beam channel; 15-top bracing plate connecting bolt; 16-splint bracing lacing wire; 17-a fabricated block; 18-a fixed end plate; 19-a slip end plate; 20-transverse tie bars; 21-the lacing wire penetrates through the hole; 22-position control connecting bolts; 23-tie bar anchor bolt; 24-post-pouring concrete; 25-balance plate ear plate; 26-ear plate anchor bars; 27-connecting falcon blocks; 28-connecting grooves; 29-top supporting plate lacing wire; 30-weight balancing body; 31-anchoring the tube ribs; 32-prestressed lacing wire; 33-pile side anchoring beam; 34-inserting anchor bars into the holes; 35-anchoring the grout.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purposes of limitation.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
On-spot hoist and mount construction technical requirement, shaped steel rolling and welding construction technical requirement, concrete placement construction technical requirement, mud jacking construction technical requirement etc. no longer give unnecessary details in this embodiment, the key explanation the utility model relates to an embodiment of structure.
Fig. 1 is the utility model discloses the combined type supporting construction of foundation ditch sketch map, fig. 2 is the structure sketch map is laid to fig. 1 combination assembled hat roof beam, and fig. 3 is fig. 1 wall back balance plate and concrete bored concrete pile connection structure sketch map.
Referring to fig. 1 to 3, the composite supporting structure for a foundation pit includes:
the concrete grouting pile comprises zone lattice support piles (4) vertically drilled at the inner edge of a wall back soil body (3), wherein the bottom ends of the zone lattice support piles (4) are grouted to form a wall back reinforcing area (5), vertical longitudinal ribs (2) are arranged at the side of the wall back soil body (3) at intervals, transverse tie bars (9) are arranged at the top ends of the vertical longitudinal ribs (2) on two sides, built-in connecting ribs (8) are arranged between the transverse tie bars (9), and concrete grouting piles (1) are grouted between the vertical longitudinal ribs (2); the balance body laying groove (10) is dug in the wall back soil body (3), and the bottom end of the balance body laying groove (10) is provided with a wall back balance plate (11) connected with the concrete cast-in-place pile (1); the supporting transverse plate (12) is arranged on the concrete filling pile (1), the supporting transverse plate (12) is connected with the built-in connecting rib (8) through a top supporting plate connecting bolt (15), and pile side clamping plates (13) supporting the lower surface of the transverse plate (12) are clamped at two sides of the cast-in-place concrete pile (1), an assembly type block (17) is arranged between the crown beam guide grooves (14) supporting the upper surface of the transverse plate (12), a clamping plate supporting pull rib (16) is arranged between the pile side clamping plate (13) close to one side of the wall back balance plate (11) and the wall back balance plate (11), a top supporting plate pull rib (29) is arranged between the wall back balance plate (11) and the supporting transverse plate (12), a pressing weight balance body (30) is filled in a gap of a balance body arrangement groove (10) at the side of the crown beam guide groove (14), one end of a prestress pull rib (32) is inserted into a wall back soil body (3) from the cast-in-place concrete pile (1), and the other end of the prestress pull rib is anchored on a pile side anchoring beam (33) at the side of the cast-in-place concrete pile (1).
Specifically, a built-in connecting rib (8) is arranged on the top end of the position where the cast-in-place concrete pile (1) is cast in, and a transverse tie bar (9) is arranged between the built-in connecting rib (8) and the vertical longitudinal rib (2) on the side of the cast-in-place concrete pile (1). The vertical setting in vertical muscle (2) interval of indulging, vertical muscle (2) inner wall of indulging is close to the perpendicular horizontal lacing bar (9) that sets up of top side, and the avris of horizontal lacing bar (9) is vertical to be set up built-in splice bar (8), and built-in splice bar (8) and vertical muscle (2) parallel arrangement of indulging, and the interval setting between the built-in splice bar (8) of both sides.
Two rows of parallel pile side clamping plates (13) are welded on the lower surface of the supporting transverse plate (12), two rows of parallel crown beam guide grooves (14) are welded on the upper surface of the supporting transverse plate, and the supporting transverse plate (12), the pile side clamping plates (13) and the crown beam guide grooves (14) are arranged at the top end of the cast-in-place concrete pile (1). The distance between the pile side clamping plates (13) on the two sides is matched with the width of the cast-in-place concrete pile (1), and the pile side clamping plates (13) on the two sides are clamped on the outer side of the cast-in-place concrete pile (1).
A hole is formed in the middle of the supporting transverse plate (12), the hole corresponds to the hole formed by the built-in connecting rib (8), and a thread is formed on the inner surface of the built-in connecting rib (8). One end of the top supporting plate connecting bolt (15) is connected with the built-in connecting rib (8) through threads, and the other end of the top supporting plate connecting bolt is connected with the supporting transverse plate (12) through a nut so as to connect the supporting transverse plate (12) with the built-in connecting rib (8).
The clamping plate bracing tie bar (16) which is obliquely arranged is arranged between the pile side clamping plate (13) and the wall back balance plate (11), and the top bracing plate tie bar (29) is connected between the bracing transverse plate (12) and the wall back balance plate (11).
As shown in fig. 2, a plurality of groups of fixed end plates (18) and sliding end plates (19) which are arranged at intervals are vertically arranged on a supporting transverse plate (12), a position control connecting bolt (22) is arranged between the sliding end plate (19) and the fixed end plate (18) at the other side, an assembly type block body (17) is arranged between the fixed end plate (18) and the sliding end plate (19) which are opposite, a transverse tie bar (20) sequentially penetrates through tie bar penetrating holes (21) of the assembly type block body (17) from the fixed end plate (18), transverse jacking force is applied to the fixed end plate (18) and the sliding end plate (19) through the position control connecting bolt (22), then the transverse tie bar (20) is firmly connected with the sliding end plate (19) through a tie bar anchor bolt (23), and then concrete (24) is poured into a gap between the fixed end plate (18) and the sliding end plate (19).
One end of each anchor bar inserting hole (34) is arranged on the anchor beam (33) on the side of the pile, the concrete cast-in-place pile (1), the wall back soil body (3) and the wall back reinforcing area (5) are arranged in a penetrating mode, the prestressed tie bars (32) are arranged in the anchor bar inserting holes (34), and grouting is conducted in gaps inside the anchor bar inserting holes (34) to form anchor grouting bodies (35).
The grid support piles (4) are poured by steel pipe piles or concrete and are uniformly arranged in parallel to the concrete pouring piles (1) at intervals; the anchoring pipe rib (31) is arranged on the outer side of the prestressed lacing wire (32), the wall back reinforcing area (5) is formed by adopting cement paste to fix a wall back soil body (3), and the outer edge of the anchoring pipe rib is close to the insertion end of the anchoring pipe rib (31).
The reinforcing sleeve (7) is formed by rolling a steel pipe, is arranged on the outer side of the vertical longitudinal rib (2), is connected with the vertical longitudinal rib (2) in a welding manner, is provided with a hole for the combined anchor rib (6) to penetrate through, and is arranged corresponding to the anchor rib inserting hole (34).
The built-in connecting rib (8) is formed by rolling a steel pipe, connecting threads are arranged in the built-in connecting rib, and the outside of the built-in connecting rib is vertically welded and connected with the transverse tie bar (9).
Wall back balance plate (11) adopt the steel sheet rolling to form, set up balance plate otic placode (25) that meet with bored concrete pile (1) at the upper surface of wall back balance plate (11) to through otic placode anchor bar (26) with balance plate otic placode (25) and bored concrete pile (1) firm in connection. The balance plate ear plates (25) are formed by rolling steel plates, are vertically welded with the wall back balance plate (11), are connected with the concrete cast-in-place pile (1) in an arc shape, and have the same inner diameter as the outer diameter of the concrete cast-in-place pile (1).
The pile side clamping plate (13) is formed by rolling a steel plate, is connected with the concrete cast-in-place pile (1) in a circular arc shape, is attached to the concrete cast-in-place pile (1) and is connected with the concrete cast-in-place pile (1), the inner diameter of the pile side clamping plate is the same as the outer diameter of the concrete cast-in-place pile (1), and the top end of the pile side clamping plate is vertically welded with the supporting transverse plate (12).
The position control connecting bolt (22) comprises a screw rod and a nut, the fastening directions of the screw rods on the two sides of the nut are opposite, and the two ends of the position control connecting bolt are respectively and vertically welded and connected with the fixed end plate (18) and the sliding end plate (19); the fixed end plate (18) and the sliding end plate (19) are both formed by rolling steel plates, and the bottom plate and two side edges of the fixed end plate (18) are respectively and vertically welded with the supporting transverse plate (12) and the crown beam guide groove (14) which are connected.
A connecting tenon block (27) connected with the assembly block body (17) is arranged on the fixed end plate (18), and a connecting groove (28) connected with the assembly block body (17) is arranged on the sliding end plate (19); assembled block (17) adopt reinforced concrete material, and the cross section is the rectangle, and both ends set up respectively that the cross section personally submits isosceles trapezoid's connection recess (28) and connection falcon piece (27), it forms to connect falcon piece (27) to adopt the steel sheet rolling.
The top supporting plate lacing wire (29) is formed by rolling a screw rod, one end of the top supporting plate lacing wire is welded with the wall back balance plate (11), and the other end of the top supporting plate lacing wire is connected with the supporting transverse plate (12) through a nut; the weight balancing body (30) is made of a wall back soil body (3) material or medium coarse sand or crushed gravel material.
The diameter of the concrete cast-in-place pile (1) is 800mm, and the strength grade of concrete is C35.
The vertical longitudinal bar (2) adopts a twisted steel bar with the diameter of 25 mm.
The wall back soil body (3) is cohesive soil in a hard plastic state.
The grid support piles (4) are made of steel pipes with the diameter of 300 mm.
The wall back reinforcing area (5) adopts silicate cement mortar to fix the wall back soil body (3). The anchoring pipe rib (31) is formed by rolling a steel pipe with the diameter of 48 mm.
The combined anchor bar (6) is formed by combining an anchoring pipe bar (31) and a prestressed lacing wire (32), the prestressed lacing wire (32) adopts a twisted steel bar with the diameter of 25mm, and a plastic pipe is sleeved on the outer wall of the prestressed lacing wire (32) positioned inside the anchoring pipe bar (31).
The reinforcing sleeve (7) is formed by rolling a steel plate with the thickness of 3 mm.
The built-in connecting rib (8) is formed by rolling a steel pipe with the diameter of 300mm, a connecting thread is arranged in the built-in connecting rib, and the outside of the built-in connecting rib is vertically welded and connected with the transverse tie bar (9).
The transverse tie bars (9) are made of steel pipes with the diameter of 60 mm.
The cross section of the balancing body distributing groove (10) is trapezoidal, the bottom width is 1000mm, and the top width is 2000 mm.
The wall back balance plate (11) is formed by rolling a steel plate with the thickness of 10mm, the balance plate ear plate (25) is formed by rolling a steel plate with the thickness of 10mm, and the inner diameter of the balance plate ear plate is the same as the outer diameter of the concrete cast-in-place pile (1); the ear plate anchor bars (26) adopt expansion bolts with the diameter of 20 mm.
The supporting transverse plate (12) is formed by rolling a steel plate with the thickness of 10mm, the pile side clamping plate (13) is formed by rolling a steel plate with the thickness of 10mm, and the crown beam guide groove (14) is formed by rolling a steel plate with the thickness of 3mm and is vertically welded with the supporting transverse plate (12).
The top supporting plate connecting bolt (15) is formed by rolling a steel pipe and is connected with the built-in connecting rib (8) through threads.
The splint bracing and stretching rib (16) adopts a prestressed screw rod with the diameter of 25 mm.
The assembly type block (17) is made of reinforced concrete material with the strength grade of C35; fixed end plate (18) all adopt thickness to form for 10 mm's steel sheet rolling with slide end plate (19), and horizontal lacing bar (20) adopt thickness to be 25 mm's twisted steel, and the aperture that the lacing bar wore to establish hole (21) is 50mm, connect falcon piece (27) and connecting groove (28) cross section and be trapezoidal, end width is 200mm, and the top is wide to be 100mm, highly is 50 mm.
The position control connecting bolt (22) comprises a screw rod and a nut with the diameter of 60 mm.
The tie bar anchor bolt (23) adopts a single-hole anchor bolt.
The post-cast concrete (24) is self-compacting concrete with a strength grade of C35.
The top supporting plate lacing wire (29) is formed by rolling a screw rod with the diameter of 30 mm.
The weight balancing body (30) is compacted and backfilled by a wall back soil body (3).
The pile side anchoring beam (33) is prefabricated by adopting reinforced concrete materials.
The diameter of the anchor bar inserting hole (34) is 130 mm.
The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by the teaching of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as the present invention, fall within the protection scope of the present invention.
Claims (9)
1. The utility model provides a combined type supporting construction of foundation ditch which characterized in that includes:
the concrete grouting pile comprises zone lattice support piles (4) vertically drilled at the inner edge of a wall back soil body (3), wherein the bottom ends of the zone lattice support piles (4) are grouted to form a wall back reinforcing area (5), vertical longitudinal ribs (2) are arranged at the side of the wall back soil body (3) at intervals, transverse tie bars (9) are arranged at the top ends of the vertical longitudinal ribs (2) on two sides, built-in connecting ribs (8) are arranged between the transverse tie bars (9), and concrete grouting piles (1) are grouted between the vertical longitudinal ribs (2); the balance body laying groove (10) is dug in the wall back soil body (3), and the bottom end of the balance body laying groove (10) is provided with a wall back balance plate (11) connected with the concrete cast-in-place pile (1); the supporting transverse plate (12) is arranged on the concrete filling pile (1), the supporting transverse plate (12) is connected with the built-in connecting rib (8) through a top supporting plate connecting bolt (15), and pile side clamping plates (13) supporting the lower surface of the transverse plate (12) are clamped at two sides of the cast-in-place concrete pile (1), an assembly type block (17) is arranged between the crown beam guide grooves (14) supporting the upper surface of the transverse plate (12), a clamping plate supporting pull rib (16) is arranged between the pile side clamping plate (13) close to one side of the wall back balance plate (11) and the wall back balance plate (11), a top supporting plate pull rib (29) is arranged between the wall back balance plate (11) and the supporting transverse plate (12), a pressing weight balance body (30) is filled in a gap of a balance body arrangement groove (10) at the side of the crown beam guide groove (14), one end of a prestress pull rib (32) is inserted into a wall back soil body (3) from the cast-in-place concrete pile (1), and the other end of the prestress pull rib is anchored on a pile side anchoring beam (33) at the side of the cast-in-place concrete pile (1).
2. The foundation pit composite supporting structure according to claim 1, wherein two rows of parallel pile side clamping plates (13) are welded to the lower surface of the supporting transverse plate (12), two rows of parallel crown beam guide grooves (14) are welded to the upper surface of the supporting transverse plate, and the supporting transverse plate (12) together with the pile side clamping plates (13) and the crown beam guide grooves (14) are placed at the top end of the cast-in-place concrete pile (1).
3. The foundation pit composite supporting structure according to claim 1, wherein one end of the top bracing plate connecting bolt (15) is connected with the built-in connecting rib (8) through a screw thread, and the other end is connected with the supporting transverse plate (12) through a nut.
4. The foundation pit composite supporting structure according to claim 1, wherein a clamping plate supporting tie bar (16) is obliquely arranged between the pile side clamping plate (13) and the wall back balance plate (11), and a top supporting plate tie bar (29) is connected between the supporting transverse plate (12) and the wall back balance plate (11).
5. The foundation pit composite supporting structure according to claim 1, wherein a plurality of groups of fixed end plates (18) and sliding end plates (19) are vertically arranged on the supporting transverse plate (12) at intervals, the position control connecting bolt (22) is arranged between the sliding end plate (19) and the fixed end plate (18) on the other side, and the assembly type block (17) is arranged between the opposite fixed end plate (18) and the sliding end plate (19).
6. The foundation pit composite supporting structure of claim 5, comprising transverse tie bars (20), wherein the transverse tie bars (20) sequentially penetrate through tie bar through holes (21) of the assembled block body (17) from the fixed end plate (18), transverse jacking force is applied to the fixed end plate (18) and the sliding end plate (19) through a position control connecting bolt (22), the transverse tie bars (20) are firmly connected with the sliding end plate (19) through tie bar anchor bolts (23), and after-pouring concrete (24) is poured into gaps between the fixed end plate (18) and the sliding end plate (19) through pressing.
7. The foundation pit composite supporting structure according to claim 1, comprising a reinforcing sleeve (7), wherein the reinforcing sleeve (7) is arranged outside the vertical longitudinal bar (2), and a hole for the combined anchor bar (6) to pass through is arranged on the reinforcing sleeve (7).
8. The foundation pit composite supporting structure according to claim 1, wherein the upper surface of the wall back balance plate (11) is provided with a balance plate ear plate (25) connected with the concrete cast-in-place pile (1), and the balance plate ear plate (25) is connected with the concrete cast-in-place pile (1) through an ear plate anchor bar (26).
9. The foundation pit composite supporting structure according to claim 5, wherein the fixed end plate (18) is provided with a connecting tenon block (27) connected with the assembled block (17), and the sliding end plate (19) is provided with a connecting groove (28) connected with the assembled block (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023099439.4U CN214143735U (en) | 2020-12-21 | 2020-12-21 | Composite supporting structure for foundation pit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023099439.4U CN214143735U (en) | 2020-12-21 | 2020-12-21 | Composite supporting structure for foundation pit |
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| CN214143735U true CN214143735U (en) | 2021-09-07 |
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| CN202023099439.4U Active CN214143735U (en) | 2020-12-21 | 2020-12-21 | Composite supporting structure for foundation pit |
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