CN217679132U - Horizontal supporting structure for deep foundation pit protection - Google Patents
Horizontal supporting structure for deep foundation pit protection Download PDFInfo
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- CN217679132U CN217679132U CN202221206282.7U CN202221206282U CN217679132U CN 217679132 U CN217679132 U CN 217679132U CN 202221206282 U CN202221206282 U CN 202221206282U CN 217679132 U CN217679132 U CN 217679132U
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Abstract
The utility model relates to a deep basal pit construction technical field, concretely relates to horizontal supporting structure for deep basal pit protection. The horizontal supporting structure comprises a crown beam, a ring beam, a force transmission assembly, stand columns and row piles. The stand is circular in the foundation ditch and arranges and form the inboard retaining structure of foundation ditch. The row piles are arranged along the edge of the foundation pit to form a foundation pit side wall protection structure. The crown beam is connected with the row piles. The ring beam is connected with the upright post. The crown beam is connected with the ring beam through the force transmission assembly. The first transfer case in the transfer assembly is connected to the crown beam. A channel for placing a jack is arranged between the first force transmission box and the second force transmission box. The base of the jack is connected with the first transmission case. The telescopic end of the jack is connected with the second force transmission box. One end of the supporting beam is connected with the second force transmission box. The other end of the supporting beam is connected with the ring beam. This horizontal support structure has improved the stability of foundation ditch, has ensured construction safety, has further optimized the operation space of digging quick-witted equipment, has improved the efficiency of construction for whole construction process.
Description
Technical Field
The utility model relates to a deep basal pit construction technical field, concretely relates to horizontal support structure for deep basal pit protection.
Background
The deep foundation pit refers to excavation engineering with excavation depth of 5m and more than 5m, or 3 layers and more than 3 layers of the basement. In addition, when the geological conditions and the surrounding environment are complicated, the excavation work may be called a deep foundation pit. With the rapid development of the building industry, the requirements for underground space development and application are continuously expanded, and deep foundation pit engineering is more and more. Meanwhile, the construction surrounding environment of the deep foundation pit engineering is more and more complicated due to the limitation of development land. For example, the perimeter of a deep foundation pit project is often accompanied by existing high-rise building structures and a densely-spaced underground piping structure. Therefore, in the engineering construction process, a stable supporting structure needs to be constructed to form a stable deep foundation pit supporting system, so that construction safety accidents are avoided.
In order to ensure the safety in the construction process of the deep foundation pit, in the prior art, a deep foundation pit supporting structure generally adopts dense rows of cast-in-situ bored piles or underground continuous walls as enclosures, and is additionally provided with one or more inner supports, and the inner supports adopt steel pipes or cast-in-place reinforced concrete rods. For example, underground continuous walls are constructed around a deep foundation pit, and internal support structures connected in a vertical and horizontal manner are formed between the underground continuous walls by using a concrete structure. Therefore, the inner support occupies a large space at the top of the deep foundation pit, and the excavator equipment is difficult to expand in a large scale, so that the overall construction progress is influenced.
To sum up, how to design a supporting structure at the in-process of deep basal pit construction for improve the stability of foundation ditch, guarantee construction safety further optimizes the operating space of digging quick-witted equipment, improves the efficiency of construction, just becomes the technical problem that the skilled person needs a diligent solution.
Disclosure of Invention
An object of the utility model is to provide a supporting construction for the in-process of deep basal pit construction for improve the stability of foundation ditch, guarantee construction safety further optimizes the operation space of digging quick-witted equipment, improves the efficiency of construction.
In order to achieve the above purpose, the utility model adopts the following scheme: the horizontal supporting structure comprises a top beam, a ring beam, a force transmission assembly, stand columns and row piles, wherein the stand columns are circularly arranged in a foundation pit to form a supporting and blocking structure on the inner side of the foundation pit, and the row piles are arranged along the edge of the foundation pit to form a protective structure on the side wall of the foundation pit;
the top beam is connected with the row piles, the ring beam is connected with the upright posts, and the top beam is connected with the ring beam through the force transmission assembly;
the force transfer assembly comprises a first force transfer box, a second force transfer box, a supporting beam and a jack, wherein the first force transfer box is connected with the top beam, a channel for placing the jack is arranged between the first force transfer box and the second force transfer box, the base of the jack is connected with the first force transfer box, the telescopic end of the jack is connected with the second force transfer box, one end of the supporting beam is connected with the second force transfer box, and the other end of the supporting beam is connected with the ring beam.
Preferably, the first force transfer box is connected with the crown beam through a connecting bolt, one end of the supporting beam is connected with the second force transfer box through a first fastening assembly, and the other end of the supporting beam is connected with the ring beam through a second fastening assembly. So set up, be convenient for pass power subassembly respectively with crown beam and ring beam assembly, further improved horizontal support structure's in the foundation ditch arrangement efficiency, and then accelerated whole construction process.
Preferably, an embedded plate is embedded into the side wall of the ring beam, a first threaded hole matched with the second fastening assembly is formed in the embedded plate, and a first anchor bar is arranged at the bottom of the embedded plate. So set up, the tip and the ring beam of being convenient for supporting the roof beam are connected, and first anchor bar is favorable to strengthening the joint strength between pre-buried board and the ring beam, and then has improved horizontal support structure's bearing strength, has promoted the steadiness of foundation ditch in the work progress, has further ensured construction safety.
Preferably, a bearing platform is arranged at the joint of the crown beam and the first transmission case, a connecting piece is embedded in the bearing platform, a second threaded hole matched with the connecting bolt is formed in the connecting piece, the connecting bolt is connected with the connecting piece through threads, and a second anchor bar is connected to the bottom of the connecting piece. So set up, the cushion cap is used for increasing the mounting area who crowns roof beam and first transfer case junction, and the hat roof beam of being convenient for links to each other with the first transfer case that extends to the equidirectional not simultaneously at same junction, has reduced the assembly degree of difficulty between hat roof beam and the first transfer case, and the second anchor bar is used for strengthening the joint strength between connecting piece and the hat roof beam.
Preferably, a bracket is arranged below the first force transfer box, is connected with the side wall of the row pile and supports the bottom of the first force transfer box. So set up, the bracket is used for providing auxiliary stay to the bottom of first biography power case, and then is favorable to first biography power case to form the outrigger to the jack, and the jack of being convenient for is to second biography power case application prestressing force to horizontal supporting structure's support intensity has further been promoted.
Preferably, a force retention box is arranged between the first force transmission box and the second force transmission box, one end of the force retention box is connected with the first force transmission box, and the other end of the force retention box is connected with the second force transmission box. So set up, the guarantor box is used for bearing the weight of the prestressing force between foundation ditch lateral wall protective structure and the inboard retaining structure of foundation ditch, and after the prestressing force loading was accomplished, be convenient for tear the jack off from the passageway.
Preferably, the outer side of the foundation pit side wall protection structure is provided with an underground continuous wall, and the underground continuous wall is arranged along the edge of the foundation pit. So set up, underground continuous wall is used for forming a fender effect to the soil body structure in the foundation ditch border outside, is favorable to with horizontal support structure synergism, has further improved the steadiness of foundation ditch.
The utility model provides a pair of a horizontal support structure for deep basal pit protection compares with prior art, has following substantive characteristics and progress:
1. the horizontal supporting structure for protecting the deep foundation pit forms a foundation pit side wall protecting structure by constructing row piles at the edge of the foundation pit, constructing circularly arranged stand columns in the middle of the foundation pit to form a foundation pit inner side retaining structure, constructing a top beam at the top of the foundation pit side wall protecting structure, constructing a ring beam at the top of the foundation pit inner side retaining structure, and sequentially connecting a first force transmission box, a jack, a second force transmission box and a supporting beam between the top beam and the ring beam, thereby optimizing the supporting structure in the prior art, avoiding the interference on excavator equipment for carrying out earthwork operation, improving the excavation efficiency of the foundation pit and accelerating the whole construction process;
2. this a horizontal support structure for deep basal pit protection forms horizontal brace between lateral wall protective structure of foundation ditch and the inboard retaining structure of foundation ditch, and in the work progress, horizontal support structure forms to strut the border of foundation ditch on the one hand, and the soil body structure of treating in the on the other hand foundation ditch to excavate also plays the effect of stabilizing the foundation ditch structure, has improved the steadiness of deep basal pit greatly, and then has ensured the security in the deep basal pit work progress.
Drawings
Fig. 1 is a schematic plan view of a horizontal supporting structure for protecting a deep foundation pit according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of the structure for protecting a deep foundation pit in fig. 1;
fig. 3 is a schematic assembly structure diagram of a horizontal supporting structure for protecting a deep foundation pit according to an embodiment of the present invention;
FIG. 4 is a schematic view showing an assembling structure of the support beam;
figure 5 is a schematic view of the connection of the first transfer box;
fig. 6 is a partially enlarged schematic view at a in fig. 3.
Reference numerals: 1. an underground diaphragm wall; 2. a crown beam; 3. a ring beam; 4. a force transfer assembly; 5. a foundation pit soil body structure; 6. a column; 7. pile arrangement; 8. pre-burying a plate; 9. a bearing platform; 10. a first anchor bar; 11. a connecting member; 12. a second anchor bar; 41. a first transfer case; 42. a second transfer case; 43. a support beam; 44. a jack; 45. a bracket; 46. a first fastening component; 47. a connecting bolt; 48. a second fastening component; 49. and (4) a force-keeping box.
Detailed Description
The following detailed description of embodiments of the present invention will be made with reference to the accompanying drawings.
The horizontal supporting structure for protecting the deep foundation pit, as shown in fig. 1-6, is used for improving the stability of the foundation pit, ensuring the construction safety, further optimizing the operation space of the excavator equipment and improving the construction efficiency. This horizontal support structure forms foundation ditch lateral wall protective structure at the border of foundation ditch through constructing the campshed, builds the stand of circular arrangement at the middle part of foundation ditch and forms the inboard retaining structure of foundation ditch. And constructing a crown beam at the top of the side wall protection structure of the foundation pit, and constructing a ring beam at the top of the retaining structure at the inner side of the foundation pit. The first force transmission box, the jack, the second force transmission box and the supporting beam are sequentially connected between the crown beam and the ring beam, so that a supporting structure in the prior art is optimized, the interference of excavation equipment for earthwork operation is avoided, the efficiency of foundation pit excavation is improved, and the whole construction process is accelerated.
As shown in fig. 1 and fig. 2, a horizontal supporting structure for protecting a deep foundation pit comprises a crown beam 2, a ring beam 3, a force transmission assembly 4, a stand column 6 and row piles 7. The upright posts 6 are circularly arranged in the foundation pit to form a foundation pit inner side retaining structure. And arranging the row piles 7 along the edge of the foundation pit to form a foundation pit side wall protection structure. The crown beam 2 is connected with the row piles 7. The ring beam 3 is connected with the upright 6. The crown beam 2 is connected to the ring beam 3 by a force transfer assembly 4.
As shown in fig. 3, the force transfer assembly 4 comprises a first force transfer box 41, a second force transfer box 42, support beams 43 and jacks 44. The first transfer box 41 is connected to the crown beam 2. Between the first transfer case 41 and the second transfer case 42 there is a passage for a jack 44. The base of the jack 44 is connected to the first transfer case 41. The telescopic end of jack 44 is connected to second transfer box 42. One end of the support beam 43 is connected to the second transfer box 42. The other end of the support beam 43 is connected to the ring beam 3.
Wherein a bracket 45 is arranged below the first transfer box 41. The bracket 45 is connected to the side wall of the campshed 7 and forms a support for the bottom of the first transfer case 41. So set up, bracket 45 is used for providing auxiliary stay to the bottom of first biography power case 41, and then is favorable to first biography power case 41 to form stable support to jack 44, and the jack 44 of being convenient for applys prestressing force to second biography power case 42 to the support intensity of horizontal support structure has further been promoted.
As shown in fig. 1, an underground continuous wall 1 is arranged on the outer side of the foundation pit side wall protective structure. The underground diaphragm walls 1 are arranged along the edge of the foundation pit. So set up, underground continuous wall 1 is used for forming a fender effect to the soil body structure in the foundation ditch border outside, is favorable to with horizontal support structure synergism, has further improved the steadiness of foundation ditch.
As shown in fig. 4, the first transfer case 41 is connected to the crown beam 2 by means of connecting bolts 47. One end of the support beam 43 is connected to the second transfer box 42 by a first fastening assembly 46. The other end of the support beam 43 is connected to the ring beam 3 by a second fastening assembly 48. So set up, be convenient for pass power subassembly 4 and crown beam 2 and ring beam 3 assembly respectively, further improved horizontal support structure's in the foundation ditch efficiency of arranging, and then accelerated whole construction process.
Wherein, the side wall of the ring beam 3 is embedded with an embedded plate 8. The embedded plate 8 is provided with a first threaded hole matched with the second fastening assembly 48. The bottom of the embedded plate 8 is provided with a first anchor bar 10. So set up, the tip and the ring beam 3 of being convenient for a supporting beam 43 are connected, and first anchor bar 10 is favorable to strengthening the joint strength between pre-buried plate 8 and the ring beam 3, and then has improved horizontal support structure's bearing strength, has promoted the steadiness of foundation ditch in the work progress, has further ensured construction safety.
As shown in fig. 5, a bearing platform 9 is provided at the joint of the crown beam 2 and the first power transmission case 41. The bearing platform 9 is embedded with a connecting piece 11. The connecting piece 11 is provided with a second threaded hole matched with the connecting bolt 47. The coupling bolt 47 is threadedly coupled to the coupling member 11. The bottom of the connecting piece 11 is connected with a second anchor bar 12. So set up, cushion cap 9 is used for increasing the installation area of crown beam 2 and first biography power case 41 junction, and the crown beam 2 of being convenient for links to each other with the first biography power case 41 that extends to different directions simultaneously at same junction, has reduced the assembly degree of difficulty between crown beam 2 and the first biography power case 41. The second anchor bars 12 serve to reinforce the coupling strength between the coupling member 11 and the crown beam 2.
As shown in fig. 6, a force retention pocket 49 is provided between the first force transfer pocket 41 and the second force transfer pocket 42. One end of the force retaining box 49 is connected to the first force transmission case 41. The other end of the force retention box 49 is connected to the second force transfer box 42. With such an arrangement, the force-retaining box 49 is used for bearing the prestress between the foundation pit side wall protective structure and the foundation pit inner side retaining structure, and after the prestress loading is completed, the jack 44 is conveniently detached from the channel.
The embodiment of the utility model provides a horizontal supporting construction for deep basal pit protection, during the construction, including following step:
step one, determining the construction site range of a foundation pit project according to a main building area, leveling the soil body structure of the foundation pit, laying an underground continuous wall along the edge of the foundation pit, laying row piles along the edge of the foundation pit on the inner side of the underground continuous wall to form a side wall protection structure of the foundation pit, and laying upright columns in circular arrangement in the middle of the foundation pit to form an inner side retaining structure of the foundation pit;
secondly, a crown beam is poured at the top of the protective structure on the side wall of the foundation pit, a ring beam is poured at the top of the retaining structure on the inner side of the foundation pit, and a first force transmission box, a jack, a second force transmission box and a support beam are sequentially connected between the crown beam and the ring beam so as to complete the installation of the horizontal supporting structure;
and step three, pouring a first top plate above the horizontal supporting structure, reserving an operation channel for the excavator equipment to enter on the first top plate, and excavating the first-layer soil body structure when the excavator equipment enters the construction site.
As shown in fig. 3, in the process of foundation pit construction, the construction process of firstly arranging the horizontal supporting structure and then excavating the soil body is followed, so that the supporting structure in the prior art is optimized, the interference on the excavator equipment for earthwork operation is avoided, and the efficiency of foundation pit excavation is improved. The horizontal supporting structure forms a horizontal support between the protective structure on the side wall of the foundation pit and the supporting and blocking structure on the inner side of the foundation pit, and in the construction process, on one hand, the horizontal supporting structure forms a support for the edge of the foundation pit; on the other hand, the foundation pit soil structure 5 to be excavated in the foundation pit also plays a role in stabilizing the foundation pit structure, so that the stability of the deep foundation pit is greatly improved, and the safety in the construction process of the deep foundation pit is further ensured.
The present invention is not limited to the specific technical solutions described in the above embodiments, and other embodiments can be provided in addition to the above embodiments. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention.
Claims (7)
1. The horizontal supporting structure for protecting the deep foundation pit is characterized by comprising a top beam (2), a ring beam (3), a force transmission assembly (4), stand columns (6) and row piles (7), wherein the stand columns (6) are circularly arranged in the foundation pit to form a supporting and blocking structure on the inner side of the foundation pit, and the row piles (7) are arranged along the edge of the foundation pit to form a protective structure on the side wall of the foundation pit;
the top beam (2) is connected with the row piles (7), the ring beam (3) is connected with the upright posts (6), and the top beam (2) is connected with the ring beam (3) through the force transmission assembly (4);
the force transfer assembly (4) comprises a first force transfer box (41), a second force transfer box (42), a supporting beam (43) and a jack (44), wherein the first force transfer box (41) is connected with the crown beam (2), a channel for placing the jack (44) is arranged between the first force transfer box (41) and the second force transfer box (42), the base of the jack (44) is connected with the first force transfer box (41), the telescopic end of the jack (44) is connected with the second force transfer box (42), one end of the supporting beam (43) is connected with the second force transfer box (42), and the other end of the supporting beam (43) is connected with the ring beam (3).
2. The horizontal support structure for deep foundation pit protection according to claim 1, wherein the first force transfer box (41) is connected to the crown beam (2) by a connecting bolt (47), one end of the supporting beam (43) is connected to the second force transfer box (42) by a first fastening assembly (46), and the other end of the supporting beam (43) is connected to the ring beam (3) by a second fastening assembly (48).
3. The horizontal supporting structure for deep foundation pit protection according to claim 2, wherein a pre-buried plate (8) is embedded in the side wall of the ring beam (3), a first threaded hole matched with the second fastening assembly (48) is formed in the pre-buried plate (8), and a first anchor bar (10) is arranged at the bottom of the pre-buried plate (8).
4. The horizontal supporting structure for the deep foundation pit protection according to claim 2, wherein a bearing platform (9) is arranged at the joint of the crown beam (2) and the first transmission box (41), a connecting piece (11) is embedded in the bearing platform (9), a second threaded hole matched with the connecting bolt (47) is formed in the connecting piece (11), the connecting bolt (47) is connected with the connecting piece (11) through threads, and a second anchor bar (12) is connected to the bottom of the connecting piece (11).
5. The horizontal supporting structure for deep foundation pit protection according to claim 1, wherein a bracket (45) is arranged below the first force transfer box (41), and the bracket (45) is connected with the side wall of the row pile (7) and supports the bottom of the first force transfer box (41).
6. The horizontal supporting structure for deep foundation pit protection according to claim 1, wherein a force retention box (49) is arranged between the first force transmission box (41) and the second force transmission box (42), one end of the force retention box (49) is connected with the first force transmission box (41), and the other end of the force retention box (49) is connected with the second force transmission box (42).
7. The horizontal supporting structure for the deep foundation pit protection according to claim 1, wherein an underground continuous wall (1) is arranged on the outer side of the foundation pit side wall protection structure, and the underground continuous wall (1) is arranged along the edge of the foundation pit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221206282.7U CN217679132U (en) | 2022-05-20 | 2022-05-20 | Horizontal supporting structure for deep foundation pit protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221206282.7U CN217679132U (en) | 2022-05-20 | 2022-05-20 | Horizontal supporting structure for deep foundation pit protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217679132U true CN217679132U (en) | 2022-10-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221206282.7U Active CN217679132U (en) | 2022-05-20 | 2022-05-20 | Horizontal supporting structure for deep foundation pit protection |
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|---|---|
| CN (1) | CN217679132U (en) |
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- 2022-05-20 CN CN202221206282.7U patent/CN217679132U/en active Active
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