A concrete support system for foundation pit enclosure and lateral deformation resistance

Abstract

The present invention discloses a concrete support system for foundation pit enclosure that resists lateral deformation, which belongs to the field of building construction technology and includes a enclosure structure arranged around the foundation pit; a plurality of layers of concrete supports are arranged in the foundation pit, support piles are arranged between adjacent concrete supports, a plurality of openings are opened on the concrete supports, and hydraulic jacks facing the enclosure structure are arranged at the openings; a plurality of inner anchor plates are arranged on the concrete supports, and a plurality of outer anchor plates corresponding to the inner anchor plates are arranged on the enclosure structure; auxiliary support structures with adjustable lengths are arranged between the inner anchor plates and the outer anchor plates, and the auxiliary support structures are spaced apart from the hydraulic jacks; a deformation monitoring device is provided on the enclosure structure; the purpose is to solve the problem that, during actual construction, the enclosure structure undergoes large lateral deformation due to external factors, and cannot provide effective protection, resulting in the inability to continue implementing the project.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and in particular relates to a concrete support system for foundation pit enclosure and anti-lateral deformation. Background Art

[0002] With the rapid development of urbanization, urban construction is becoming increasingly diversified and complex, and the construction environment is becoming increasingly complex, with increasingly demanding standards. Especially during underground construction, the construction of the foundation pit can cause disturbances to nearby existing buildings. Therefore, to minimize the impact of construction on the safety of existing buildings, it is necessary to install enclosure structures during the foundation pit construction process to protect the surrounding environment.

[0003] However, during the actual construction process, due to factors such as deep foundation pits, large plane scales, complex sites, and climate changes, large lateral deformations of the retaining structures will occur during the construction project. The retaining structures cannot effectively protect the surrounding environment, resulting in the inability to continue the project implementation. Summary of the Invention

[0004] In view of this, the present invention discloses a concrete support system for foundation pit retaining wall that is resistant to lateral deformation. Its purpose is to solve the problem that during the actual construction process, the retaining structure undergoes large lateral deformation due to external factors, which makes it impossible to provide effective protection and causes the project to be unable to continue.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A concrete support system for foundation pit retaining wall and resisting lateral deformation includes a retaining structure arranged around the foundation pit; several layers of concrete supports are arranged in the foundation pit, support piles are arranged between adjacent concrete supports, several openings are opened on the concrete supports, and hydraulic jacks facing the retaining structure are arranged at the openings; several inner anchor plates are arranged on the concrete supports, and several outer anchor plates corresponding to the inner anchor plates are arranged on the retaining structure; auxiliary support structures with adjustable lengths are arranged between the inner anchor plates and the outer anchor plates, and the auxiliary support structures are spaced apart from the hydraulic jacks; a deformation monitoring device is provided on the retaining structure.

[0007] In this solution, when the deformation monitoring device detects that the deformation of the retaining structure exceeds the set value, the retaining structure in the deformed area is pushed back outward through the corresponding hydraulic jack; after the retaining structure is pushed back by the hydraulic jack, a gap appears between the retaining structure and the concrete support. At this time, the length of the auxiliary support structure is adjusted to ensure that the two ends of the auxiliary support structure remain connected to the inner anchor plate and the outer anchor plate, ensuring that the concrete support continues to provide support force to the retaining structure and reducing the deformation of the retaining structure.

[0008] Furthermore, the auxiliary support structure includes a support rod connected to the inner anchor plate by a ball joint and a fixed rod connected to the outer anchor plate by a ball joint, a coaxial slide groove is provided at the end of the fixed rod, and an adjustment rod extending into the corresponding slide groove is coaxially connected to the end of the support rod, a plurality of adjustment grooves parallel to the adjustment rod are provided on the circumference of the adjustment rod, a plurality of limit grooves are provided on one side of the adjustment groove, a plurality of limit blocks are fixed on the inner wall of the slide groove, the limit blocks are slidably connected to the corresponding adjustment groove, and the width of the limit blocks is equal to that of the limit groove.

[0009] When the hydraulic jack needs to restore the deformation of the retaining structure, the adjusting rod is rotated forward so that the limit block on the inner wall of the fixed rod slides from the limit groove into the adjusting groove, so that the adjusting rod can slide relative to the fixed rod. At this time, the hydraulic jack applies axial force to the retaining structure to promote the retaining structure to restore its deformation; when the deformation of the retaining structure is completed, the adjusting rod is rotated in the opposite direction to drive the limit block to slide from the adjusting groove into the limit groove, so that the adjusting rod is fixed relative to the fixed rod, and the supporting effect of the concrete support on the retaining structure is restored; the whole process is simple and quick.

[0010] Furthermore, the auxiliary support structure also includes a support body, both ends of which are detachably connected to the corresponding side walls of the outer anchor plates, and a plurality of suction cups are provided on one end of the support body facing the enclosure structure.

[0011] When the corresponding area of ​​the retaining structure needs to restore its deformation, the multiple outer anchor plates on the side of the corresponding hydraulic jack are connected through the supporting body to surround the hydraulic jack in the area, and then the supporting body and the retaining structure are adsorbed and fixed by the suction cup; when the hydraulic jack in the area changes the axial force applied to the retaining structure to promote its deformation, the auxiliary supporting structure at the edge of the deformation area maintains the supporting force on the outer anchor plate, and then cooperates with the supporting body to restrict the retaining structure at the edge of the deformation area, preventing the deformation of the retaining structure in the area from affecting the retaining structure in other areas, affecting the axial force applied by the remaining hydraulic jacks to the undeformed retaining structure, resulting in the inability to maintain appropriate support for the retaining structure, thereby increasing the probability of deformation of the retaining structure.

[0012] Furthermore, a cavity is provided inside the outer anchor plate, and a plurality of through holes communicating with the outside are provided on the peripheral side of the cavity, and a sealing plate is detachably connected to the through holes; the supporting body includes a plurality of shell sections, and a plurality of hollow connecting rods are provided between adjacent shells, and both ends of the connecting rods respectively pass through the corresponding connecting shell ends and are slidably connected thereto, and the suction cup is provided on the shell and communicated therewith, wherein the shell located at the end is detachably connected to the corresponding outer anchor plate side wall, and the shell is communicated with the adjacent through holes.

[0013] In this solution, the shell is slid relative to the connecting rod according to the spacing between the outer anchor plates, and the length of the support body is adjusted, which greatly improves the use range of the auxiliary support structure; after the length of the support body is adjusted, the sealing plate at the corresponding through hole on the corresponding outer anchor plate is removed, and the support body is installed on the outer anchor plate; at this time, multiple support bodies connect the outer anchor plates at the edge of the deformation area, and it is only necessary to remove the sealing plate on one of the outer anchor plates, and use the pump and the through hole to evacuate the cavity, so that the suction cup on the shell can form a negative pressure, and then adsorb it on the enclosing structure.

[0014] Furthermore, a latch for locking the connecting rod is provided on the housing.

[0015] Furthermore, a rubber sealing ring is provided on the housing.

[0016] Furthermore, a mounting seat is hinged on the shell at the end, and the mounting seat and the shell are locked by bolts; the mounting seat is detachably connected to the corresponding outer anchor plate side wall, and the mounting seat is connected to the adjacent through hole, and a hose is connected between the mounting seat and the adjacent shell.

[0017] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the purpose, technical solutions and beneficial effects of the present invention more clear, the present invention provides the following drawings for illustration:

[0019] Figure 1 Schematic diagram of the structure of an embodiment of the present invention;

[0020] Figure 2 for Figure 1 A magnified schematic diagram of point A in the middle;

[0021] Figure 3 is a longitudinal cross-sectional view of the support body in the installed state according to an embodiment of the present invention;

[0022] Figure 4 for Figure 3 Enlarged schematic diagram of point B in the middle.

[0023] The markings in the accompanying drawings are as follows: enclosure structure 1, concrete support 2, hydraulic jack 3, inner anchor plate 4, outer anchor plate 5, support rod 6, fixing rod 7, adjusting rod 8, adjusting groove 9, limit groove 10, limit block 11, sealing plate 12, shell 13, connecting pipe 14, mounting seat 15, suction cup 16, support pile 17. DETAILED DESCRIPTION

[0024] like Figures 1 to 4 As shown:

[0025] A concrete support 2 system for foundation pit retaining and resisting lateral deformation includes a retaining structure 1 arranged around the foundation pit; several layers of concrete supports 2 are arranged in the foundation pit, and support piles 17 are arranged between adjacent concrete supports 2; several openings are opened on the concrete supports 2, and hydraulic jacks 3 facing the retaining structure 1 are arranged at the openings; several inner anchor plates 4 are arranged on the concrete supports 2, and several outer anchor plates 5 corresponding to the inner anchor plates 4 are arranged on the retaining structure 1; auxiliary support structures with adjustable lengths are arranged between the inner anchor plates 4 and the outer anchor plates 5, and the auxiliary support structures are spaced apart from the hydraulic jacks 3; a deformation monitoring device is provided on the retaining structure 1.

[0026] In this solution, when the deformation monitoring device detects that the deformation of the retaining structure 1 exceeds the set value, the retaining structure 1 in the deformed area is pushed back outward through the corresponding hydraulic jack 3; after the retaining structure 1 is pushed back by the hydraulic jack 3, a gap appears between the retaining structure 1 and the concrete support 2. At this time, the length of the auxiliary support structure is adjusted to ensure that the two ends of the auxiliary support structure remain connected to the inner anchor plate 4 and the outer anchor plate 5, to ensure that the concrete support 2 continues to provide support force to the retaining structure 1, and reduce the deformation of the retaining structure 1.

[0027] In this embodiment, the auxiliary support structure includes a support rod 6 connected to the inner anchor plate 4 by a ball joint and a fixed rod 7 connected to the outer anchor plate 5 by a ball joint. A coaxial slide groove is provided at the end of the fixed rod 7. The end of the support rod 6 is coaxially rotatably connected to an adjustment rod 8 that extends into the corresponding slide groove. A plurality of adjustment grooves 9 parallel to the adjustment rod 8 are provided on the circumference of the adjustment rod 8. A plurality of limit grooves 10 are provided on one side of the adjustment groove. A plurality of limit blocks 11 are fixed on the inner wall of the slide groove. The limit blocks 11 are slidably connected to the corresponding adjustment groove 9, and the width of the limit blocks 11 is equal to that of the limit groove 10.

[0028] When the hydraulic jack 3 needs to restore the deformation of the enclosure structure 1, the lock at the hinge between the outer anchor plate 5 and the fixing rod 7, and the inner anchor plate 4 and the support rod 6 is released, so that the auxiliary support structure can adapt its angle as the enclosure structure 1 deforms; at this time, by rotating the adjusting rod 8 forward, the limit block 11 on the inner wall of the fixing rod 7 slides from the limit groove 10 into the adjusting groove 9, so that the adjusting rod 8 can slide relative to the fixing rod 7. At this time, the hydraulic jack 3 applies axial force to the enclosure structure 1, prompting the enclosure structure 1 to restore its deformation; when the deformation of the enclosure structure 1 is completed, the adjusting rod 8 is rotated in the opposite direction, thereby driving the limit block 11 to slide from the adjusting groove 9 into the limit groove 10, so that the adjusting rod 8 is fixed relative to the fixing rod 7, restoring the supporting effect of the concrete support 2 on the enclosure structure 1, and locking the hinge between the outer anchor plate 5 and the fixing rod 7, and the inner anchor plate 4 and the support rod 6. The locking of the hinged structure is a conventional technical means in this field, so it is not described in detail; the whole process is simple and fast.

[0029] In this embodiment, the auxiliary support structure further comprises a support body, both ends of which are detachably connected to the side walls of the corresponding outer anchor plates 5 , and a plurality of suction cups 16 are provided on one end of the support body facing the enclosure structure 1 .

[0030] When the corresponding area of ​​the retaining structure 1 needs to restore its deformation, the multiple external anchor plates 5 on the sides of the corresponding hydraulic jacks 3 are connected through the supporting body to surround the hydraulic jacks 3 in the area, and then the supporting body and the retaining structure 1 are adsorbed and fixed by the suction cups 16; when the hydraulic jacks 3 in the area change the axial force applied to the retaining structure 1 to promote its deformation, the auxiliary supporting structure at the edge of its deformation area maintains the supporting force on the external anchor plates 5, and then cooperates with the supporting body to limit the retaining structure 1 at the edge of the deformation area to prevent the deformation of the retaining structure 1 in the area from affecting the retaining structures 1 in other areas, affecting the axial force applied by the remaining hydraulic jacks 3 to the undeformed retaining structures 1, resulting in the inability to maintain appropriate support for the retaining structure 1, thereby increasing the probability of deformation of the retaining structure 1.

[0031] In this embodiment, a cavity is provided inside the outer anchor plate 5, and a plurality of through holes communicating with the outside are provided on the periphery of the cavity, and a sealing plate 12 is detachably connected to the through hole; the supporting body includes a plurality of segmented shells 13, and a plurality of hollow connecting rods are provided between adjacent shells 13, and both ends of the connecting rods respectively pass through the corresponding ends of the connecting shells 13 and are slidably connected thereto, and the suction cup 16 is provided on the shell 13 and communicated therewith, wherein the shell 13 located at the end is detachably connected to the side wall of the corresponding outer anchor plate 5, and the shell 13 is communicated with the adjacent through holes.

[0032] In this solution, the shell 13 is slid relative to the connecting rod according to the spacing between the outer anchor plates 5, and the length of the support body is adjusted, which greatly improves the use range of the auxiliary support structure; after the length of the support body is adjusted, the sealing plate 12 at the corresponding through hole on the corresponding outer anchor plate 5 is removed, and the support body is installed on the outer anchor plate 5; at this time, multiple support bodies connect the outer anchor plates 5 at the edge of the deformation area, and only the sealing plate 12 on one of the outer anchor plates 5 needs to be removed, and the cavity needs to be evacuated using a pump and a through hole, so that the suction cup 16 on the shell 13 can form a negative pressure, and then be adsorbed on the enclosure structure 1.

[0033] In this embodiment, the housing 13 is provided with a latch for locking the connecting rod, which is a conventional technical means in the art and is therefore not shown in the figure.

[0034] In this embodiment, a rubber sealing ring is bonded to the housing 13 to improve the sealing performance of the connection between the housing 13 and the connecting rod and prevent air leakage at the connection.

[0035] In this embodiment, a mounting seat 15 is hinged on the shell 13 at the end, and the mounting seat 15 and the shell 13 are locked by bolts; the mounting seat 15 is detachably connected to the side wall of the corresponding outer anchor plate 5, and the mounting seat 15 is connected to the adjacent through hole, and a hose is connected between the mounting seat 15 and the adjacent shell 13.

[0036] By means of the mounting seat 15 , the end of the supporting body can be connected to the corresponding outer anchor plate 5 at any angle, thereby further improving the applicability of the auxiliary structure.

[0037] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A concrete support system for foundation pit enclosure and lateral deformation resistance, characterized by: The support structure comprises a plurality of layers of concrete supports, support piles are provided between adjacent concrete supports, a plurality of openings are provided on the concrete supports, and hydraulic jacks or auxiliary support structures facing the support structure are provided at the openings, a plurality of inner anchor plates are provided on the concrete supports, a plurality of outer anchor plates corresponding to the inner anchor plates are provided on the support structure, and auxiliary support structures with adjustable lengths are provided between the inner anchor plates and the outer anchor plates, and the auxiliary support structures are spaced apart from the hydraulic jacks; a deformation monitoring device is provided on the support structure; the auxiliary support structure comprises a support rod connected to the inner anchor plate by a ball joint and a fixing rod connected to the outer anchor plate by a ball joint, a coaxial slide groove is provided at the end of the fixing rod, an adjusting rod extending into the corresponding slide groove is coaxially connected to the end of the support rod, and a plurality of adjusting rods are provided on the circumference of the adjusting rod. and a plurality of parallel adjustment slots, each of which is provided with a plurality of limit slots, and a plurality of limit blocks are fixed on the inner wall of the slide slot, the limit blocks are slidably connected to the corresponding adjustment slots, and the width of the limit blocks is equal to that of the limit slots; the auxiliary support structure also includes a support body, two ends of the support body are detachably connected to the corresponding outer anchor plate side walls, and a plurality of suction cups are provided on the end of the support body facing the enclosing structure; a cavity is provided inside the outer anchor plate, and a plurality of through holes communicating with the outside world are provided on the periphery of the cavity, and a sealing plate is detachably connected to the through holes; the support body includes a plurality of section shells, and a plurality of hollow connecting rods are provided between adjacent shells, and two ends of the connecting rods respectively pass through the corresponding connecting shell ends and are slidably connected thereto, and the suction cup is provided on the shell and communicated with it, wherein the shell located at the end is detachably connected to the corresponding outer anchor plate side wall, and the shell is communicated with the adjacent through holes.

2. The concrete support system for foundation pit enclosure and lateral deformation resistance according to claim 1, characterized in that: The housing is provided with a latch for locking the connecting rod.

3. The concrete support system for foundation pit enclosure and lateral deformation resistance according to claim 2, characterized in that: A rubber sealing ring is provided on the housing.

4. The concrete support system for foundation pit enclosure and lateral deformation resistance according to claim 3 is characterized in that: A mounting seat is hinged on the shell at the end, and the mounting seat and the shell are locked by bolts; the mounting seat is detachably connected to the corresponding outer anchor plate side wall, and the mounting seat is connected to the adjacent through hole, and a hose is connected between the mounting seat and the adjacent shell.

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