CN218713059U - Double-row Larsen steel sheet pile retaining structure suitable for soft clay stratum construction - Google Patents
Double-row Larsen steel sheet pile retaining structure suitable for soft clay stratum construction Download PDFInfo
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- CN218713059U CN218713059U CN202222517255.8U CN202222517255U CN218713059U CN 218713059 U CN218713059 U CN 218713059U CN 202222517255 U CN202222517255 U CN 202222517255U CN 218713059 U CN218713059 U CN 218713059U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 142
- 239000010959 steel Substances 0.000 title claims abstract description 142
- 238000010276 construction Methods 0.000 title claims abstract description 39
- 239000004927 clay Substances 0.000 title claims abstract description 26
- 239000002689 soil Substances 0.000 claims abstract description 63
- 239000004568 cement Substances 0.000 claims abstract description 51
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 21
- 230000010485 coping Effects 0.000 claims abstract description 17
- 230000000712 assembly Effects 0.000 claims abstract description 14
- 238000000429 assembly Methods 0.000 claims abstract description 14
- 230000004888 barrier function Effects 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 230000002787 reinforcement Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
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Abstract
The application discloses double larsen steel sheet pile retaining structure suitable for construction of soft clay stratum includes: the Larsen steel plate assemblies, the cement soil grating and the coping assemblies are arranged in pairs; the Larsen steel plate assemblies are symmetrically accommodated at two sides of the cement soil grating; the top of the Larsen steel plate component extends out of the top surface of the cement soil grid; the jacking components are arranged at the tops of the Larsen steel plate components and are respectively connected with the tops of the Larsen steel plate components arranged in pairs; the coping subassembly includes: a plurality of inserted bars, reinforcing mesh sheets and concrete coping plates; the lower parts of the dowel bars are inserted into the top surface of the cement soil grid; the top of the dowel bar extends out of the top surface of the cement soil grid; the reinforcing mesh is sleeved at the top of the dowel; the concrete pressure top plate is covered on the reinforcing mesh sheet; the joint bar top is accommodated and is set up in the concrete coping. The structure connects two rows of Larsen steel sheet piles, a cement grid and an inserted reinforcing rib into a whole through a concrete pressure top plate and a reinforcing mesh. The engineering with higher requirements on foundation pit deformation and water stop is met.
Description
Technical Field
The application relates to foundation pit support technical field, especially a double larsen steel sheet pile retaining structure suitable for soft clay stratum construction.
Background
Larsen steel sheet pile is a hot rolling (or cold bending) shaped steel of taking the hasp, hits the interlock that leans on the hasp interconnect after throwing into, forms continuous steel sheet pile enclosure wall, and the main effect is for keeping off soil and stagnant water, and the construction is convenient, can pull out and retrieve steel sheet pile cyclic utilization after the foundation ditch construction, has the better advantage of economic nature.
However, the conventional Larsen steel sheet pile is convenient to hoist and assemble, and has low rigidity and large deformation due to hollow interior. In the soft clay area that requires the strictness to foundation pit deformation, single larsen steel sheet pile supporting construction can't provide reliable support, and the deflection exceeds the default easily, has restricted single larsen steel sheet pile supporting construction's use.
The utility model provides a double larsen steel sheet pile retaining structure in weak soil stratum, and
SUMMERY OF THE UTILITY MODEL
The application provides a double larsen steel sheet pile retaining structure suitable for construction of soft clay stratum for the technical problem that the larsen steel sheet pile supporting structure rigidity that exists is lower among the solution prior art, warp great, can't satisfy the soft clay area that requires strictly to foundation ditch deformation and use.
The application provides a double larsen steel sheet pile retaining structure suitable for construction of soft clay stratum includes: the Larsen steel plate assemblies, the cement soil grating and the coping assemblies are arranged in pairs;
the Larsen steel plate components are symmetrically accommodated at two sides of the cement soil grating; the top of the Larsen steel plate component extends out of the top surface of the cement soil grid; the jacking components are arranged at the tops of the Larsen steel plate components and are respectively connected with the tops of the Larsen steel plate components arranged in pairs;
the capping assembly comprises: a plurality of inserted bars, reinforcing mesh sheets and concrete coping plates; the lower parts of the dowel bars are inserted into the top surface of the cement soil grid; the top of the dowel bar extends out of the top surface of the cement soil grid; the reinforcing mesh is sleeved at the top of the dowel; the concrete pressure top plate is covered on the reinforcing mesh sheet; the top of the dowel bar is accommodated in the concrete pressure top plate.
Preferably, the cemented soil grid is accommodated and arranged in the foundation pit.
Preferably, the soil cement grid comprises: long piles arranged in pairs; the long pile is arranged at the bottom of the foundation pit and is close to the inner side wall of the foundation pit; the lower parts of the symmetrically arranged long piles enclose a cavity.
Preferably, the soil cement grid comprises: a plurality of grid bars; the grid barrier strips are arranged between the adjacent long piles at intervals and arranged at the upper part of the foundation pit.
Preferably, a plurality of dowel bars are inserted between adjacent grid barrier bars in the middle of the cement soil grid; and cement soil stirring layers are filled between adjacent inserted bars and between the inserted bars and the grid barrier strips.
Preferably, the larsen steel plate assembly comprises: a plurality of steel sheet piles of buckling each other and dismantling the connection.
Preferably, the larsen steel plate assembly comprises: a first steel sheet pile and a second steel sheet pile; the first steel sheet pile is arranged in the first side of the cement soil grid; the second steel sheet pile is arranged in the second side of the opposite cement soil grid.
Preferably, a plurality of meshes are formed on the reinforcing mesh; the top ends of the inserting bars are inserted into the mesh holes; the bottom surface of the reinforcing mesh is in compression joint with the top surface of the cement soil grid.
Preferably, the steel sheet pile includes: the device comprises a transverse plate, a first inclined plate, a second inclined plate, a first bent buckle and a second bent buckle; a first inclined plate is connected to one side edge of the transverse plate; the other side edge of the transverse plate is connected with a second inclined plate;
the first bent buckle is arranged on the extending end of the first inclined plate; the second bent buckle is arranged on the extending end of the second inclined plate; the included angle between the first inclined plate and the transverse plate is larger than 90 degrees and smaller than 100 degrees; the included angle between the second inclined plate and the transverse plate is larger than 90 degrees and smaller than 100 degrees.
Preferably, the adjacent steel sheet piles are buckled and connected with the second bent buckle through the first bent buckle; or, the adjacent steel sheet piles are buckled and connected through the first inclined plate and the second inclined plate.
The beneficial effects that this application can produce include:
1) The application provides a double larsen steel sheet pile retaining structure suitable for construction of soft clay stratum, this structure can be for adopting the cement soil grid to consolidate between the double larsen steel sheet pile soft soil region, and the strengthening rib is established in the interpolation of cement soil grid consolidation district, presses roof and reinforcing bar net piece through the concrete, connects into whole with two rows of larsen steel sheet piles, cement soil grid and interpolation strengthening rib. An effective solution is provided for the engineering with higher requirements on foundation pit deformation and water stop. The structure can be recycled after construction, is low-carbon and green, and improves economic benefits.
2) The utility model provides a double larsen steel sheet pile retaining structure suitable for soft clay stratum construction adopts double larsen steel sheet pile retaining structure in the excavation supporting engineering that weak soil area time limit for a project is short, the degree of depth is big, deformation control is strict, has a determining deviation between two rows of steel sheet piles, and presses the roof through the concrete and connect, soft soil area between two rows of larsen steel sheet piles adopts the cement soil grid to consolidate, can solve the soft clay area and warp the higher foundation ditch engineering project of foundation ditch deformation and stagnant water requirement.
3) The application provides a double larsen steel sheet pile retaining structure suitable for construction of soft clay stratum adopts the cement soil grid to consolidate, unite double larsen steel sheet pile and dowel bar in the weak soil area, presses the roof to connect into whole, common atress through the concrete. The overall supporting structure can well resist lateral deformation, the overall stability of the supporting structure is guaranteed, and the length adjustment of the double rows of Larsen steel sheet piles is used for guaranteeing the anti-sliding and anti-overturning stability of the supporting structure. The method has the advantages of simple operation, low cost, small deformation of the foundation pit, small occupied space and good recycling economy.
Drawings
Fig. 1 is a schematic top view of a double-row larsen steel sheet pile retaining structure suitable for soft clay stratum construction provided by the present application;
fig. 2 is a schematic front sectional view of a double-row larsen steel sheet pile retaining structure suitable for soft clay stratum construction provided by the present application;
fig. 3 is a schematic view of a three-dimensional structure of a reinforcing mesh provided in the present application;
fig. 4 is a schematic structural view of a larsen steel sheet pile small lock catch in a front view;
fig. 5 is a schematic view of a main structure of the larsen steel sheet pile large lock provided in the present application;
FIG. 6 is a schematic top view of a cement grid according to the present application;
illustration of the drawings:
1. a Larsen steel plate assembly; 2. concrete coping; 3. a cement soil grid; 4. inserting ribs; 5. reinforcing mesh sheets; 121. a first steel sheet pile; 122. a second steel sheet pile; 31. a grid barrier strip; 51. mesh openings; 111. a transverse plate; 112. a first sloping plate; 115. a second swash plate; 113. a first curved buckle; 114. a second curved buckle; 31. long piles; 32. a cavity.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Technical means which are not described in detail in the present application and are not used for solving the technical problems of the present application are all arranged according to common knowledge in the field, and various common knowledge arrangement modes can be realized.
Referring to fig. 1-5, the application provides a double larsen steel sheet pile retaining structure suitable for soft clay stratum construction includes: the Larsen steel plate assemblies 1, the cemented soil grating 3 and the coping assemblies are arranged in pairs;
the Larsen steel plate assemblies 1 are symmetrically accommodated at two sides of the cement soil grid 3; the top of the Larsen steel plate component 1 extends out of the top surface of the cement soil grid 3; the jacking components are arranged at the tops of the Larsen steel plate components 1 and are respectively connected with the tops of the Larsen steel plate components 1 which are arranged in pairs;
the coping subassembly includes: a plurality of inserted bars 4, a reinforcing mesh 5 and a concrete coping 2; the lower parts of the dowel bars 4 are inserted into the top surface of the cement soil grid 3; the top of the dowel bar 4 extends out of the top surface of the cement soil grid 3; the reinforcing mesh 5 is sleeved on the top of the dowel bar 4; the concrete coping plate 2 is covered on the reinforcing mesh 5; the top of the joint bar 4 is accommodated in the concrete coping plate 2.
The cement soil grating 3 is arranged between the Larsen steel plate assemblies 1 which are arranged in pairs, and the top of the Larsen steel plate assemblies 1 which are arranged in pairs is connected to enable the top to be connected into a whole through the jacking assembly arranged at the top of the Larsen steel plate assemblies 1, so that the purpose of enhancing the whole stress strength is achieved. This structure is because whole atress, and the deflection is less, can better satisfy the deformation requirement of soft clay stratum foundation ditch to provide reliable support.
Preferably, the soil cement grid 3 is accommodated in the foundation pit.
Preferably, the soil cement grid 3 comprises: long piles 31 arranged in pairs; the long pile 31 is arranged at the bottom of the foundation pit and is arranged close to the inner side wall of the foundation pit; the cavity 32 is surrounded by the lower part of the long piles 31 which are symmetrically arranged. The arrangement can reduce the manufacturing cost and simultaneously meet the requirement of mechanical property.
Preferably, the soil cement grid 3 comprises: a plurality of grid bars 31; the grid bars 31 are arranged between adjacent long piles 31 at intervals and arranged at the upper part of the foundation pit. The arrangement can reliably connect the Larsen steel plate assemblies 1 arranged in pairs to form a whole.
Preferably, a plurality of dowel bars 4 are inserted between the adjacent grid barrier strips 31 in the middle of the cement soil grid 3; and a cement soil stirring layer is filled between adjacent inserted bars 4 and in front of the inserted bars 4 and the grid barrier strips 31. The structure can be integrated according to the arrangement, and the stress strength and the reliability are enhanced.
Preferably, the larsen steel plate assembly 1 comprises: a plurality of steel sheet piles which are mutually buckled and disassembled for connection. Is convenient for being repeatedly used after being disassembled.
Preferably, the larsen steel plate assembly 1 comprises: a first steel sheet pile 121 and a second steel sheet pile 122; the first steel sheet pile 121 is arranged in the first side of the cement soil grid 3; a second steel sheet pile 122 is arranged in the opposite second side of the cemented soil grid 3.
Preferably, the reinforcing mesh 5 is provided with a plurality of meshes 51; the top ends of the inserting bars 4 are inserted into the meshes 51; the bottom surface of the steel bar net piece 5 is in compression joint with the top surface of the cement soil grid 3. Effectively improving the stress strength to form a whole.
Preferably, the steel sheet pile includes: a transverse plate 111, a first inclined plate 112, a second inclined plate 115, a first bent buckle 113 and a second bent buckle 114; a first inclined plate 112 is connected to one side of the transverse plate 111; the other side edge of the transverse plate 111 is connected with a second sloping plate 115;
the first bent buckle 113 is arranged on the extending end of the first sloping plate 112; the second bent buckle 114 is disposed on an extending end of the second sloping plate 115; the included angle between the first inclined plate 112 and the transverse plate 111 is greater than 90 degrees and less than 100 degrees; the included angle between the second inclined plate 115 and the transverse plate 111 is greater than 90 degrees and less than 100 degrees.
Preferably, the adjacent steel sheet piles are connected with the second bent buckle 114 through the first bent buckle 113 in a buckling manner; or, the adjacent steel sheet piles are buckled and connected through the first sloping plate 112 and the second sloping plate 115.
In one embodiment, the first bent buckle 113 of a steel sheet pile is connected with the second bent buckle 114 of another adjacent steel sheet pile in a snap-fit manner, as shown in fig. 5, which is a small snap-lock connection.
In one embodiment, the first sloping plate 112 of a steel sheet pile is inserted into another adjacent steel sheet pile and is connected with the second sloping plate 115 in a snap-fit manner, as shown in fig. 6, which is a large snap-lock connection.
In a specific embodiment, the method for using the structure comprises the following steps:
the construction process comprises the following steps: construction preparation, site leveling, measurement and positioning, reinforcement of soft soil areas among piles, insertion of steel sheet piles, construction of concrete connecting beams among piles and dismantling of the steel sheet piles.
The first step is as follows: preparation for construction
After the steel sheet piles are transported to the site, the steel sheet piles should be inspected, measured, classified and numbered in detail. The fore-and-aft section should pass the test and fail the test and should not be used. Before the steel sheet pile is used, soil on the steel sheet pile, especially in a lock opening, should be cleaned and smeared with lubricating oil, deformation conditions also need to be checked, and trimming is not suitable.
The second step is that: leveling field
Before the steel sheet pile construction, the operation platform is leveled, and a steel sheet pile connection test is carried out. And after the pile connection test is successful, the pile driver starts construction after reaching the design position of the steel sheet pile.
The third step: measuring and positioning
The steel sheet pile is accurately positioned before construction, firstly, the axis of the steel sheet pile is determined by a measurer, guide piles can be arranged at certain intervals, the steel sheet pile is directly used as the guide pile, then, a rope is hung to serve as a guide wire, and the axis of the steel sheet pile is controlled by the guide wire during piling.
The fourth step: pile soft soil region reinforcement
And (5) along with the forward propulsion of the double-row pile construction, taking reinforcement measures for the finished steel sheet piles. Example one of the engineering reinforcement measures: and a soft soil area in the middle of the double-row piles is reinforced by adopting a cement soil stirring layer, so that the overall rigidity of the double-row piles is increased.
The fifth step: inserted steel sheet pile
When the steel sheet pile is driven, a vibration hammer hung by a crawler crane arranged on a crane is adopted to clamp the steel sheet pile, the steel sheet pile is moved to a pile driving position, a male head of the steel sheet pile is firstly inserted into a female opening of the driven steel sheet pile, then the steel sheet pile is slowly pressed in by self weight until the steel sheet pile cannot sink, and then the vibration hammer is started to carry out vibration pile sinking.
The first steel sheet pile must ensure that the verticality meets the requirement, other steel sheet piles are sequentially and singly driven by the method, the most difficult is the sealing of the last steel sheet pile, namely the steel sheet pile in the construction of the steel sheet pile, when the last 3-6 steel sheet piles are constructed, the residual length is carefully measured, whether the whole number of steel sheet piles can be driven down is judged, and otherwise, the adjustment is carried out.
And a sixth step: construction of concrete coping 2 between piles
And (5) along with the forward propulsion of the double-row pile construction, taking reinforcement measures for the finished steel sheet piles. The second engineering reinforcement measure of the embodiment: and concrete is used for pressing the top plate 2 between the two rows of steel sheet piles to ensure the relative stability of the steel sheet piles.
The seventh step: steel sheet pile demolition
The steel sheet pile is dismantled, the concrete pressure top plate 2 between the double rows of piles is firstly dismantled, the steel sheet piles are removed one by one after the concrete pressure top plate 2 is dismantled, the steel sheet piles are separated from the lower soil body as much as possible during pile pulling, and then pile pulling is carried out. Firstly, the first steel sheet pile is slightly hammered and vibrated to be pulled out by 1-2 m in height, and then the first steel sheet pile is pulled out in sequence after being loosened, and the pile tip is rolled and the pile opening is locked to deform, so that the capacity of pile pulling equipment can be increased, and adjacent piles are pulled out together. The construction is not the best known technology.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (10)
1. The utility model provides a double larsen steel sheet pile retaining structure suitable for soft clay stratum construction which characterized in that includes: the Larsen steel plate assemblies, the cement soil grating and the coping assemblies are arranged in pairs;
the Larsen steel plate components are symmetrically accommodated at two sides of the cement soil grating; the top of the Larsen steel plate component extends out of the top surface of the cement soil grid; the jacking components are arranged at the tops of the Larsen steel plate components and are respectively connected with the tops of the Larsen steel plate components arranged in pairs;
the coping subassembly includes: a plurality of inserted bars, reinforcing mesh sheets and concrete coping plates; the lower parts of the dowel bars are inserted into the top surface of the cement soil grid; the top of the dowel bar extends out of the top surface of the cement soil grid; the reinforcing mesh is sleeved at the top of the dowel; the concrete pressure top plate is covered on the reinforcing mesh sheet; the joint bar top is accommodated and is set up in the concrete coping.
2. The double-row Larsen steel sheet pile retaining structure suitable for soft clay stratum construction as claimed in claim 1, wherein a soil cement grid is accommodated in the foundation pit.
3. The double-row Larsen steel sheet pile retaining structure suitable for soft clay stratum construction as claimed in claim 1, wherein the soil cement grid comprises: long piles arranged in pairs; the long pile is arranged at the bottom of the foundation pit and is close to the inner side wall of the foundation pit; the lower parts of the symmetrically arranged long piles enclose a cavity.
4. The double-row Larsen steel sheet pile retaining structure suitable for soft clay stratum construction as claimed in claim 3, wherein the soil cement grid comprises: a plurality of grid bars; the grid barrier strips are arranged between the adjacent long piles at intervals and arranged at the upper part of the foundation pit.
5. The double-row Larsen steel sheet pile retaining structure suitable for soft clay stratum construction according to claim 1, wherein a plurality of inserted bars are inserted between adjacent grid barrier bars in the middle of the cement soil grid; and cement soil stirring layers are filled between adjacent inserted bars and between the inserted bars and the grid barrier strips.
6. The double-row Larsen steel sheet pile retaining structure suitable for soft clay stratum construction as claimed in claim 1, wherein the Larsen steel sheet assembly comprises: a plurality of steel sheet piles which are mutually buckled and disassembled for connection.
7. The double-row Larsen steel sheet pile retaining structure suitable for soft clay stratum construction as claimed in claim 1, wherein the Larsen steel sheet assembly comprises: a first steel sheet pile and a second steel sheet pile; the first steel sheet pile is arranged in the first side of the cement soil grid; the second steel sheet pile is arranged in the second side of the opposite cement soil grid.
8. The double-row Larsen steel sheet pile retaining structure suitable for soft clay stratum construction as claimed in claim 1, wherein a plurality of meshes are arranged on the steel mesh sheet; the top ends of the inserting bars are inserted into the mesh holes; the bottom surface of the reinforcing mesh is in compression joint with the top surface of the cement soil grid.
9. The double-row Larsen steel sheet pile retaining structure suitable for soft clay stratum construction as claimed in claim 1, wherein the steel sheet pile comprises: the device comprises a transverse plate, a first inclined plate, a second inclined plate, a first bent buckle and a second bent buckle; a first inclined plate is connected to one side edge of the transverse plate; the other side edge of the transverse plate is connected with a second inclined plate;
the first bent buckle is arranged on the extending end of the first inclined plate; the second bent buckle is arranged on the extending end of the second inclined plate; the included angle between the first inclined plate and the transverse plate is larger than 90 degrees and smaller than 100 degrees; the included angle between the second inclined plate and the transverse plate is larger than 90 degrees and smaller than 100 degrees.
10. The double-row Larsen steel sheet pile retaining structure suitable for soft clay stratum construction according to claim 9, wherein adjacent steel sheet piles are buckled and connected with a second buckle through a first buckle; or, the adjacent steel sheet piles are buckled and connected through the first inclined plate and the second inclined plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222517255.8U CN218713059U (en) | 2022-09-22 | 2022-09-22 | Double-row Larsen steel sheet pile retaining structure suitable for soft clay stratum construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222517255.8U CN218713059U (en) | 2022-09-22 | 2022-09-22 | Double-row Larsen steel sheet pile retaining structure suitable for soft clay stratum construction |
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| Publication Number | Publication Date |
|---|---|
| CN218713059U true CN218713059U (en) | 2023-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222517255.8U Active CN218713059U (en) | 2022-09-22 | 2022-09-22 | Double-row Larsen steel sheet pile retaining structure suitable for soft clay stratum construction |
Country Status (1)
| Country | Link |
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| CN (1) | CN218713059U (en) |
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- 2022-09-22 CN CN202222517255.8U patent/CN218713059U/en active Active
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