CN113152478B - Deep foundation pit supporting structure - Google Patents
Deep foundation pit supporting structure Download PDFInfo
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- CN113152478B CN113152478B CN202110235648.7A CN202110235648A CN113152478B CN 113152478 B CN113152478 B CN 113152478B CN 202110235648 A CN202110235648 A CN 202110235648A CN 113152478 B CN113152478 B CN 113152478B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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Abstract
The invention relates to the technical field of building engineering, in particular to a deep foundation pit supporting structure which comprises a retaining plate, a limiting plate, a water guide plate and a fixing mechanism, wherein during construction, the limiting plate is placed at the edge of the bottom of a foundation pit, an anchor rod penetrates through the limiting plate, a gasket and a nut are used for fixing the anchor rod, the retaining plate penetrates through the limiting plate through a clamping groove and is attached to the side wall of the foundation pit, and the water guide plate is installed at the bottom of the foundation pit; after the installation is accomplished, the lateral wall when the foundation ditch produces pressure to the fender apron right, the vertical part of limiting plate produces the restraint effect to keeping off the apron, and the taut stock of limiting plate, the fixture block stretches out the third cavity and blocks into in the soil stone, increases the area of contact of fixed block and soil stone, and then increases fixed establishment's stable effect, and then increases the supporting effect of fender apron to the foundation ditch lateral wall.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a deep foundation pit supporting structure.
Background
The foundation pit is a soil pit excavated at the design position of the foundation according to the elevation of the foundation and the plane size of the foundation, and an excavation scheme is determined according to geological and hydrological data and the conditions of buildings nearby the site before excavation, and waterproof and drainage work is performed. The persons who do not dig deeply can use the method of putting side slope to stabilize the soil slope, and the size of the slope is determined according to the relevant construction regulations. When a building is excavated deeply and nearby, a foundation pit wall supporting method, a concrete-sprayed wall protection method and a large foundation pit can be used, and even an underground continuous wall and a columnar column type cast-in-situ bored pile are linked to prevent an outer soil layer from collapsing; for those who have no influence on nearby buildings, the underground water level can be reduced by a well point method, and slope releasing open cut is adopted; in cold regions, natural cold freezing method can be adopted for excavation and the like.
The method for supporting the deep foundation pit generally adopts a sprayed concrete wall protection method, but the method has high cost and long construction time, supporting materials cannot be reused, particularly, an anchor rod is used as a supporting structure, the design difficulty of stability under a complex annular shape is very high, and when the stability of soil and stones near the foundation pit is poor, a good supporting effect cannot be achieved.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a deep foundation pit supporting structure.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a deep basal pit supporting construction, is including keeping off native board, limiting plate, water guide plate and fixed establishment, the bottom that keeps off the native board is equipped with a plurality of stabilizer bars, the longitudinal section of limiting plate is "L" shape, the limiting plate sets up the edge at the foundation ditch top, the horizontal part top of limiting plate is equipped with the draw-in groove, it runs through the draw-in groove and sets up the side at the foundation ditch to keep off the native board, the stabilizer bar inserts the edge of foundation ditch bottom, fixed establishment includes gasket, nut, stock and anchor tail, the anchor tail is buried in the soil stone of foundation ditch side, the one end and the anchor tail of stock are connected, the other end of stock runs through limiting plate and gasket and through nut and gasket and limiting plate fixed connection. When being under construction, at the inside excavation gallery of one side of foundation ditch, and stretch into the gallery with fixed establishment's anchor tail and stock, open the logical groove that supplies the stock to stretch into on the limiting plate, place the edge at the foundation ditch bottom with the limiting plate, run through the limiting plate with the stock, use gasket and nut fixed stock, run through the limiting plate and laminate the lateral wall of placing at the foundation ditch through the draw-in groove with the fender apron, use heavy device to insert the stabilizer bar in the marginal soil stone of foundation ditch bottom, play stable effect, and install the water deflector in the foundation ditch bottom, this structure is easy to assemble and dismantlement, when can adapt to different topography condition, still have higher stability, when having reduced construction cost, economic benefits has been increased.
Specifically, the anchor tail comprises a fixed block, a pressing block, a first spring, a connecting rod, a stop block, a clamping block, a convex block and a second spring, a first cavity is arranged in the fixed block, the pressing block is arranged in the first cavity, one end of the anchor rod is fixedly connected with one side of the pressing block, the first spring is arranged on one side of the pressing block, two ends of the first spring are respectively connected with one side of the pressing block and the inner wall of the first cavity in an abutting mode, the connecting rod is symmetrically arranged in the second cavity of the fixed block along the length direction of the fixed block, the first cavity is communicated with the second cavity, one side of the pressing block is fixedly connected with one end of the connecting rod, the cross section of the clamping block is approximately L-shaped, a plurality of third cavities corresponding to the clamping block in size and shape are evenly arranged on the side wall of the fixed block, the third cavities are communicated with the second cavity, the clamping blocks are respectively arranged in the third cavities, the fixture block is towards the one end in the fixed block for a side edge takes bellied inclined plane, just the fixture block is located partial one side fixed mounting in the fixed block has the lug, one side of lug is equipped with the second spring, the both ends of second spring are contradicted with the lateral wall of lug and third cavity respectively and are connected, the even fixed mounting in side of connecting rod has a plurality of dogs, the one end of dog is contradicted with the one end of fixture block and is connected. After the installation is accomplished, the lateral wall when the foundation ditch produces right pressure to retaining the breast board, the vertical part of limiting plate produces the restraint effect to retaining the breast board, the horizontal part of limiting plate produces the trend of upset, the taut stock of limiting plate, the stock drives the briquetting rebound, the briquetting drives the connecting rod rebound, dog conflict extrusion fixture block on the connecting rod is equipped with the one end of lug, the lug plays limiting displacement for fixture block and dog chucking, fixture block stretch out the third cavity and block into in the soil stone, increase the area of contact of fixed block and soil stone, and then increase fixed establishment's stable effect, prevent that the limiting plate from further overturning, and then increase the supporting effect of retaining the breast board to the foundation ditch lateral wall.
The water guide plate is arranged at the bottom of the foundation pit and comprises a horizontal plate and an inclined plate, one end of the horizontal plate is abutted against one side of the soil retaining plate and is connected with the other end of the horizontal plate, the inclined plate is fixedly connected with the inclined plate and is inserted into soil stones at the bottom of the foundation pit, and a plurality of water guide grooves are formed in the top of the water guide plate. When the lateral wall of foundation ditch produces right pressure to retaining the breast board, the water deflector inserts the interior slope board of soil stone and has increased the frictional force with the foundation ditch bottom, and then increases and play the supporting role to retaining the breast board, and when the rainwater was more, the guiding gutter on the water deflector can the rainwater introduce the foundation ditch middle part, prevents that the rainwater from piling up the edge in the foundation ditch bottom, reduces the support intensity of foundation ditch bottom soil stone.
During construction, a tunnel is excavated in one side of a foundation pit, an anchor tail and an anchor rod of a fixing mechanism extend into the tunnel, a through groove for the anchor rod to extend into is formed in a limiting plate, the limiting plate is placed at the edge of the bottom of the foundation pit, the anchor rod penetrates through the limiting plate, the anchor rod is fixed by using a gasket and a nut, a retaining plate penetrates through the limiting plate through a clamping groove and is attached to the side wall of the foundation pit, a stabilizer bar is inserted into soil and stones at the edge of the bottom of the foundation pit by using a heavy device to play a stabilizing effect, and a water guide plate is installed at the bottom of the foundation pit; after the installation is finished, when the lateral wall of the foundation pit generates right pressure on the retaining plate, the vertical part of the limiting plate generates a constraint effect on the retaining plate, the horizontal part of the limiting plate generates a turning trend, the limiting plate tensions the anchor rod, the anchor rod drives the pressing block to move upwards, the pressing block drives the connecting rod to move upwards, the block on the connecting rod pushes against one end of the clamping block provided with the lug, the lug plays a limiting role so that the clamping block is clamped with the block, the clamping block extends out of the third cavity and is clamped into the soil stone, the contact area of the fixing block and the soil stone is increased, the stabilizing effect of the fixing mechanism is further increased, the limiting plate is prevented from further turning over, the supporting effect of the retaining plate on the lateral wall of the foundation pit is further increased, the water guide plate is inserted into the soil stone inclined plate to increase the friction force with the bottom of the foundation pit, the supporting effect on the retaining plate is further increased, when rainwater is more, the guiding gutter on the guiding board can lead rainwater into the middle part of the foundation pit, prevents the rainwater from accumulating at the edge of the bottom of the foundation pit, and reduces the supporting strength of soil and stones at the bottom of the foundation pit.
The invention has the beneficial effects that:
(1) according to the deep foundation pit supporting structure, the retaining plate, the limiting plate and the water guide plate are used in a matched mode, during construction, a tunnel is excavated inside one side of a foundation pit, the anchor tail and the anchor rod of the fixing mechanism extend into the tunnel, the limiting plate is provided with the through groove for the anchor rod to extend into, the limiting plate is placed on the edge of the bottom of the foundation pit, the anchor rod penetrates through the limiting plate, the anchor rod is fixed through the gasket and the nut, the retaining plate penetrates through the limiting plate through the clamping groove and is placed on the side wall of the foundation pit in a fit mode, the stabilizer rod is inserted into soil and stones on the edge of the bottom of the foundation pit through a heavy device, the stabilizing effect is achieved, and the water guide plate is installed at the bottom of the foundation pit.
(2) According to the deep foundation pit supporting structure, due to the use of the fixing mechanism, when the side wall of the foundation pit generates right pressure on the retaining plate, the vertical part of the limiting plate generates a restraining effect on the retaining plate, the horizontal part of the limiting plate generates a turning trend, the limiting plate tensions the anchor rod, the anchor rod drives the pressing block to move upwards, the pressing block drives the connecting rod to move upwards, the stop block on the connecting rod pushes one end of the clamping block provided with the protruding block in a butting mode, the protruding block plays a limiting role, the clamping block is tightly clamped with the stop block, the clamping block extends out of the third cavity and is clamped into the soil stone, the contact area between the fixing block and the soil stone is increased, the stabilizing effect of the fixing mechanism is further increased, the limiting plate is prevented from further turning, and the supporting effect of the retaining plate on the side wall of the foundation pit is further increased.
(3) According to the deep foundation pit supporting structure, due to the use of the water guide plate, when the side wall of the foundation pit generates right pressure on the soil retaining plate, the water guide plate is inserted into the inclined plate in the soil stone to increase the friction force with the bottom of the foundation pit, so that the supporting effect on the soil retaining plate is increased, when more rainwater is contained, rainwater can be introduced into the middle of the foundation pit through the water guide groove in the water guide plate, the rainwater is prevented from accumulating at the edge of the bottom of the foundation pit, and the supporting strength of the soil stone at the bottom of the foundation pit is reduced.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic overall structure diagram of a deep foundation pit supporting structure provided by the invention;
FIG. 2 is a cross-sectional view of the integrated mechanism shown in FIG. 1;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is a schematic structural view of the retaining plate shown in FIG. 1;
fig. 5 is a schematic structural diagram of a limiting plate shown in fig. 2;
FIG. 6 is an enlarged view of the portion B shown in FIG. 2;
FIG. 7 is an enlarged view of the portion C shown in FIG. 3;
fig. 8 is an enlarged view of a portion D shown in fig. 3.
In the figure: 1. a soil guard plate; 11. a stabilizer bar; 2. a limiting plate; 21. a card slot; 22. a through groove; 3. a water guide plate; 31. a horizontal plate; 32. an inclined plate; 33. a water chute; 4. a fixing mechanism; 41. a gasket; 42. a nut; 44. an anchor rod; 45. anchoring the tail; 451. a fixed block; 4511. a first cavity; 4512. a second cavity; 4513. a third cavity; 452. briquetting; 4521. a first spring; 4522. a connecting rod; 4523. a stopper; 453. a clamping block; 4531. a bump; 4532. a second spring; 5. and (6) foundation pit.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 8, the deep foundation pit supporting structure according to the present invention includes a soil blocking plate 1, a limiting plate 2, a water guide plate 3 and a fixing mechanism 4, the bottom of the soil retaining plate 1 is provided with a plurality of stabilizing bars 11, the longitudinal section of the limiting plate 2 is L-shaped, the limiting plate 2 is arranged at the edge of the top of the foundation pit 5, the top of the horizontal part of the limiting plate 2 is provided with a clamping groove 21, the soil guard plate 1 penetrates through the clamping groove 21 and is arranged on the side surface of the foundation pit 5, the stabilizing rod 11 is inserted into the edge of the bottom of the foundation pit 5, the fixing mechanism 4 comprises a gasket 41, a screw cap 42, an anchor rod 44 and an anchor tail 45, the anchor tail 45 is buried in soil and stones on the side surface of the foundation pit 5, one end of the anchor rod 44 is connected with the anchor tail 45, and the other end of the anchor rod 44 penetrates through the limiting plate 2 and the gasket 41 and is fixedly connected with the limiting plate 2 through the nut 42 and the gasket 41. When carrying out construction, at the inside excavation gallery of one side of foundation ditch 5, and stretch into the gallery with anchor tail 45 and stock 44 of fixed establishment 4, cut open logical groove 22 that supplies stock 44 to stretch into on limiting plate 2, place limiting plate 2 at the edge of foundation ditch 5 bottom, run through limiting plate 2 with stock 44, use gasket 41 and nut 42 fixed stock 44, run through limiting plate 2 and the laminating is placed on the lateral wall of foundation ditch 5 through draw-in groove 21 with retaining plate 1, use heavy device to insert stabilizer bar 11 in the soil stone at foundation ditch 5 bottom edge, play stable effect, and install division deflector 3 in foundation ditch 5 bottom, this structure is easy to assemble and dismantlement, when can adapt to different topography condition, still have higher stability, when having reduced construction cost, economic benefits has been increased.
Specifically, as shown in fig. 3, 7 and 8, the anchor tail 45 includes a fixing block 451, a pressing block 452, a first spring 4521, a connecting rod 4522, a stopper 4523, a clamping block 453, a protrusion 4531 and a second spring 4532, a first cavity 4511 is disposed in the fixing block 451, the pressing block 452 is disposed in the first cavity 4511, one end of the anchor rod 44 is fixedly connected to one side of the pressing block 452, the first spring 4521 is disposed on one side of the pressing block 452, two ends of the first spring 4521 are respectively connected to one side of the pressing block 452 and an inner wall of the first cavity 4511 in an abutting manner, the connecting rods 4522 are symmetrically disposed in the second cavity 4512 of the fixing block 451 along a length direction of the fixing block 451, the first cavity 4511 is communicated with the second cavity 4512, one side of the pressing block 452 is fixedly connected to one end of the connecting rod 4522, a cross section of the clamping block 453 is substantially L-shaped, a plurality of sizes are uniformly disposed on an upper side wall of the fixing block 451, The third cavity 4513 is corresponding to the fixture 453 in shape, the third cavity 4513 is communicated with the second cavity 4512, the plurality of fixtures 453 are respectively disposed in the third cavity 4513, one end of the fixture 453 facing the fixing block 451 is a slope with a protrusion 4533 at a side edge, one side of the fixture 453 located in the fixing block 451 is fixedly provided with a protrusion 4531, one side of the protrusion 4531 is provided with a second spring 4532, two ends of the second spring 4532 are respectively in interference connection with the protrusion 4531 and the side wall of the third cavity 4513, the side of the connecting rod 4522 is uniformly and fixedly provided with a plurality of stoppers 4523, and one end of each stopper 4523 is in interference connection with one end of the fixture 453. After the installation is accomplished, when the lateral wall of foundation ditch 5 produced right pressure to retaining plate 1, the vertical part of limiting plate 2 produced the restraint effect to retaining plate 1, the horizontal part of limiting plate 2 produces the trend of upset, the taut stock 44 of limiting plate 2, stock 44 drives briquetting 452 rebound, briquetting 452 drives connecting rod 4522 rebound, dog 4523 on the connecting rod 4522 contradicts the one end that extrudees fixture block 453 and be equipped with lug 4531, lug 4531 plays limiting displacement for fixture block 453 and dog 4523 chucking, fixture block 453 stretches out third cavity 4513 and blocks into in the stone, increases the area of contact of fixed block 451 and stone, and then increases the stable effect of fixed establishment 4, prevents that limiting plate 2 from further overturning, and then increases the supporting effect of retaining plate 1 to the lateral wall of foundation ditch 5.
Specifically, as shown in fig. 1, the water deflector 3 is arranged at the bottom of the foundation pit 5, the water deflector 3 comprises a horizontal plate 31 and an inclined plate 32, one end of the horizontal plate 31 is abutted against one side of the soil retaining plate 1, the other end of the horizontal plate 31 is fixedly connected with the inclined plate 32, the inclined plate 32 is inserted into the soil and stones at the bottom of the foundation pit 5, and the top of the water deflector 3 is provided with a plurality of water guide grooves 33. When the lateral wall of foundation ditch 5 produces pressure to keeping off native board 1 rightwards, water deflector 3 inserts interior slope board 32 of soil stone and has increased the frictional force with foundation ditch 5 bottom, and then increases and play the supporting role to keeping off native board 1, and when the rainwater was more, guiding gutter 33 on the water deflector 3 can the rainwater introduce foundation ditch 5 middle part, prevents that the rainwater from piling up at the edge of foundation ditch 5 bottom, reduces the support intensity of foundation ditch 5 bottom soil stone.
During construction, a tunnel is excavated inside one side of a foundation pit 5, an anchor tail 45 and an anchor rod 44 of a fixing mechanism 4 are inserted into the tunnel, a through groove 22 for the anchor rod 44 to extend into is excavated on a limiting plate 2, the limiting plate 2 is placed at the edge of the bottom of the foundation pit 5, the anchor rod 44 penetrates through the limiting plate 2, the anchor rod 44 is fixed by using a gasket 41 and a nut 42, a soil retaining plate 1 penetrates through the limiting plate 2 through a clamping groove 21 and is placed on the side wall of the foundation pit 5 in an attaching manner, a heavy device is used for inserting a stabilizer rod 11 into soil and stones at the edge of the bottom of the foundation pit 5, a stabilizing effect is achieved, and a water deflector 3 is installed at the bottom of the foundation pit 5; after the installation is completed, when the sidewall of the foundation pit 5 generates a pressure to the soil retaining plate 1 to the right, the vertical part of the limiting plate 2 generates a constraint effect to the soil retaining plate 1, the horizontal part of the limiting plate 2 tends to overturn, the limiting plate 2 tensions the anchor rod 44, the anchor rod 44 drives the pressing block 452 to move upwards, the pressing block 452 drives the connecting rod 4522 to move upwards, the stopper 4523 on the connecting rod 4522 pushes against one end of the fixture 453 provided with the projection 4531, the projection 4531 plays a limiting role so that the fixture 453 is tightly clamped with the stopper 4523, the fixture 453 extends out of the third cavity 4513 and is clamped into the soil stone, the contact area between the fixing block 451 and the soil stone is increased, the stabilizing effect of the fixing mechanism 4 is increased, the limiting plate 2 is prevented from further overturning, the supporting effect of the soil retaining plate 1 to the sidewall of the foundation pit 5 is increased, the water guide plate 3 is inserted into the soil stone inward-inclined plate 32 to increase the friction force with the bottom of the foundation pit 5, and then increase and play the supporting role to retaining plate 1, when the rainwater is more, guiding gutter 33 on the guiding plate 3 can the rainwater introduce foundation ditch 5 middle parts, prevents that the rainwater from piling up at the edge of foundation ditch 5 bottoms, reduces the support intensity of foundation ditch 5 bottom soil stone.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. The utility model provides a deep basal pit supporting construction which characterized in that: comprises a soil retaining plate (1), a limiting plate (2), a water guide plate (3) and a fixing mechanism (4), the bottom of the soil retaining plate (1) is provided with a plurality of stabilizing bars (11), the longitudinal section of the limiting plate (2) is L-shaped, the limit plate (2) is arranged at the edge of the top of the foundation pit (5), the top of the limit plate (2) is provided with a clamping groove (21), the soil retaining plate (1) penetrates through the clamping groove (21) and is arranged on the side surface of the foundation pit (5), the stabilizer bar (11) is inserted into the edge of the bottom of the foundation pit (5), the fixing mechanism (4) comprises a gasket (41), a screw cap (42), an anchor rod (44) and an anchor tail (45), the anchor tail (45) is embedded in soil and stones on the side surface of the foundation pit (5), one end of the anchor rod (44) is connected with the anchor tail (45), the other end of the anchor rod (44) penetrates through the limiting plate (2) and the gasket (41) and is fixedly connected with the limiting plate (2) through the nut (42) and the gasket (41);
the anchor tail (45) comprises a fixing block (451), a pressing block (452), a first spring (4521), a connecting rod (4522), a check block (4523), a check block (453), a bump (4531) and a second spring (4532), a first cavity (4511) is arranged in the fixing block (451), the pressing block (452) is arranged in the first cavity (4511), one end of the anchor rod (44) is fixedly connected with one side of the pressing block (452), the first spring (4521) is arranged on one side of the pressing block (452), two ends of the first spring (4521) are respectively connected with the inner wall of the first cavity (4511) in an abutting mode on one side of the pressing block (452), the connecting rod (4522) is symmetrically arranged in the second cavity (4512) of the fixing block (451) along the length direction of the fixing block (451), the first cavity (4511) is communicated with the second cavity (4512), one side of the pressing block (452) is fixedly connected with one end of the connecting rod (4522), the cross section of the fixture block (453) is approximately L-shaped, the upper side wall of the fixed block (451) is uniformly provided with a plurality of third cavities (4513) with the size and the shape corresponding to the fixture block (453), the third cavity (4513) is communicated with the second cavity (4512), the clamping blocks (453) are respectively arranged in the third cavity (4513), one end of the fixture block (453) facing the inside of the fixed block (451) is an inclined surface with a bulge (4533) at one side edge, and one side of the part of the clamping block (453) positioned in the fixing block (451) is fixedly provided with a convex block (4531), a second spring (4532) is arranged on one side of the bump (4531), two ends of the second spring (4532) are respectively connected with the bump (4531) and the side wall of the third cavity (4513) in an abutting mode, a plurality of stoppers (4523) are uniformly and fixedly arranged on the side surface of the connecting rod (4522), one end of the stopper (4523) is in interference connection with one end of the clamping block (453).
2. A deep foundation pit supporting construction according to claim 1, wherein: water guide plate (3) set up in foundation ditch (5) bottom, water guide plate (3) are including horizontal plate (31) and hang plate (32), the one end of horizontal plate (31) is contradicted with one side of retaining soil board (1) and is connected, hang plate (32) insert in the soil stone of foundation ditch (5) bottom, water guide plate (3) top is equipped with a plurality of guiding gutters (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110235648.7A CN113152478B (en) | 2021-03-03 | 2021-03-03 | Deep foundation pit supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110235648.7A CN113152478B (en) | 2021-03-03 | 2021-03-03 | Deep foundation pit supporting structure |
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| CN113152478A CN113152478A (en) | 2021-07-23 |
| CN113152478B true CN113152478B (en) | 2022-07-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3971504B2 (en) * | 1998-03-05 | 2007-09-05 | ナブコシステム株式会社 | Temporary earth retaining structure and temporary earth retaining method |
| CN209923941U (en) * | 2019-04-29 | 2020-01-10 | 江啸 | Building foundation pit supporting device |
| CN211200397U (en) * | 2019-11-05 | 2020-08-07 | 张伟 | Hydraulic engineering foundation pit protection structure |
| CN211368740U (en) * | 2019-12-06 | 2020-08-28 | 青岛福瀛建设集团有限公司 | A foundation ditch supporting construction for construction |
| CN111827299B (en) * | 2020-06-23 | 2021-07-13 | 北京住总第一开发建设有限公司 | Foundation pit supporting structure and construction method thereof |
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