Support device to suppress foundation pit deformation and building settlement

Abstract

The present invention provides a support device for suppressing foundation pit deformation and building settlement, which belongs to the technical field of foundation pit excavation. The support device includes: a plurality of first support assemblies, the first end of each first support assembly is arranged on the structural floor, the second end of each first support assembly is arranged on the supporting structure, and the first support assembly is retractable; at least one second support assembly, the second support assembly connects two adjacent first support assemblies, and the second support assembly is retractable; each first support assembly includes: the first end of the first support rod is connected to one of the structural floor and the supporting structure; the first end of the second support rod is connected to the other of the structural floor and the supporting structure, and the second end of the second support rod is threadedly connected to the second end of the first support rod; the braking part includes: a shell is connected to one of the first support rod and the second support rod, and an accommodating space is formed in the shell; a jack is arranged in the accommodating space, and the jack is threadedly connected to the other of the first support rod and the second support rod.

Description

Technical Field

[0001] The present invention relates to the technical field of foundation pit excavation, and in particular to a supporting device for suppressing foundation pit deformation and building settlement. Background Art

[0002] During top-down excavation, excessive horizontal displacement of the supporting structure causes the surrounding area to be disturbed by the excavation, generating a displacement field. This displacement field affects the environment around the pit, causing horizontal displacement toward the pit and downward ground settlement.

[0003] Current methods for suppressing foundation pit deformation and building settlement generally involve reinforcement operations such as densifying structural floor slabs or increasing the rigidity of ground-connected wall support systems. However, these methods suffer from limitations such as high construction difficulty, complex construction processes, extended construction periods, low utilization rates, and difficulty in recycling. Summary of the Invention

[0004] In view of this, the present invention provides a support device for suppressing foundation pit deformation and building settlement, comprising multiple first support assemblies and at least one second support assembly. Each of the multiple first support assemblies has a first end attached to the structural floor, and a second end attached to the support structure. The first support assembly is retractable to apply prestress to the structural floor and the support structure to prevent deformation. The second support assembly connects two adjacent first support assemblies and is retractable to apply a supporting force to the first support assembly. Each first support assembly includes a first support rod and a second support rod. The first end of the first support rod is connected to one of the structural floor and the support structure. The first end of the second support rod is connected to the other of the structural floor and the support structure, and the second end of the second support rod is threadedly connected to the second end of the first support rod. Each first support assembly also includes a brake portion, which includes a housing and a jack. The housing is connected to one of the first and second support rods, and a storage space is formed within the housing. The jack is arranged in the accommodating space and is threadedly connected to the other of the first support rod and the second support rod. By operating the jack, the first support rod and the second support rod are rotated relative to each other to extend or contract the first support assembly.

[0005] Optionally, the support device for suppressing foundation pit deformation and building settlement includes three first support assemblies, and the three first support assemblies form the same angle with the structural floor.

[0006] Optionally, one of the three first support assemblies is located in the middle of the structural floor, the other two first support assemblies are symmetrically arranged relative to one of the first support assemblies, and the distance between the first ends of two adjacent first support assemblies is smaller than the distance between the second ends of two adjacent first support assemblies.

[0007] Optionally, a braking opening is formed on the side wall of the shell, and the handle of the jack extends out of the accommodating space from the braking opening. By operating the handle, the first support rod and the second support rod are rotated relative to each other to extend or contract the first support assembly.

[0008] Optionally, each first support assembly further includes a connecting piece, wherein a jack is threadedly connected to the other of the first support rod and the second support rod via the connecting piece, and the jack drives the connecting piece to rotate so as to cause the first support rod and the second support rod to rotate relative to each other.

[0009] Optionally, each first support assembly further includes a plurality of fixing members, wherein a plurality of mounting holes are formed on a side of the shell away from the connecting member, and each fixing member is connected to the connecting member through a mounting hole to maintain the extension or contraction of the first support assembly.

[0010] Optionally, each second support assembly includes a third support rod and a fourth support rod. The first end of the third support rod is connected to one of the two adjacent first support assemblies. The first end of the fourth support rod is connected to the other of the two adjacent first support assemblies, and the second end of the fourth support rod is threadedly connected to the second end of the third support rod.

[0011] Optionally, the support structure is at least one of a ground-connected wall and a pile support.

[0012] According to the support device for suppressing foundation pit deformation and building settlement provided by the present invention, prestress can be applied between the supporting structure and the structural floor by setting a first support assembly. For example, the first support assembly can be extended. In this way, during the foundation pit excavation process, the first support assembly can prevent the structural floor and the supporting structure from being deformed due to the increase of soil pressure or water pressure outside the foundation pit, thereby ensuring the stability of the foundation pit structure and suppressing the settlement and deformation of the building. The first support assembly can be supported by setting a second support assembly, thereby ensuring the overall stability of the first support assembly. Furthermore, since the first support assembly and the second support assembly can be extended and retracted, they can adapt to different working conditions, reduce on-site processing time and material waste, and make the support device have a higher effective utilization rate and can be recycled. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The above and other objects, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0014] Figure 1 It shows a first arrangement diagram of a support device in a foundation pit according to an embodiment of the present invention;

[0015] Figure 2 shows a perspective view of a support device according to an embodiment of the present invention;

[0016] Figure 3 shows a perspective view of a supporting device according to an embodiment of the present invention from another angle;

[0017] Figure 4 A perspective view of a braking portion and an end fixing member thereof according to an embodiment of the present invention is shown;

[0018] Figure 5 Shows a perspective view of a braking portion from another angle according to an embodiment of the present invention;

[0019] Figure 6 A second arrangement diagram of a support device in a foundation pit according to an embodiment of the present invention is shown;

[0020] Figure 7 A third arrangement diagram of the support device in the foundation pit according to an embodiment of the present invention is shown.

[0021] Reference numerals

[0022] 1. First support assembly; 11. First support rod; 12. Second support rod; 13. Braking part; 131. Housing; 132. Jack; 133. Braking opening; 14. Connector; 15. Fixing part; 2. Second support assembly; 21. Third support rod; 22. Fourth support rod; 3. Structural floor; 4. Support structure; 5. Foundation pit excavation surface; 6. Underground structure. DETAILED DESCRIPTION

[0023] In order to make the objectives, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0024] The terms used herein are only for describing specific embodiments and are not intended to limit the present disclosure. The terms "comprise," "include," etc. used herein indicate the presence of the features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0025] All terms used herein, including technical and scientific terms, have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification and should not be interpreted in an idealized or overly rigid manner.

[0026] When expressions such as “at least one of A, B, and C, etc.” are used, they should generally be interpreted in accordance with the meaning commonly understood by those skilled in the art. For example, “a system having at least one of A, B, and C” should include but is not limited to systems having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, and C, etc. When expressions such as “at least one of A, B, or C, etc.” are used, they should generally be interpreted in accordance with the meaning commonly understood by those skilled in the art. For example, “a system having at least one of A, B, or C” should include but is not limited to systems having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, and C, etc.

[0027] It should also be noted that directional terms such as "upper," "lower," "front," "back," "left," and "right" mentioned in the embodiments are merely references to the directions in the accompanying drawings and are not intended to limit the scope of protection of this disclosure. Throughout the drawings, identical elements are represented by identical or similar reference numerals. Conventional structures or configurations will be omitted where they may cause confusion in understanding this disclosure.

[0028] During the implementation of the present invention, it was discovered that during the reverse excavation process, due to the excessive horizontal displacement of the support structure, the surrounding area of ​​the foundation pit is disturbed by the excavation of the soil, resulting in a displacement field. Because this displacement field affects the foundation pit and the surrounding environment, causing horizontal displacement toward the foundation pit and downward ground settlement, when there are buildings around the foundation pit, it is necessary to strictly control the disturbance of the surrounding environment caused by the foundation pit excavation to ensure that the disturbance is within the specified range in order to ensure the safety and applicability of the building. Therefore, an embodiment of the present invention provides a support device that suppresses foundation pit deformation and building settlement.

[0029] Figure 1 A first arrangement diagram of a support device in a foundation pit according to an embodiment of the present invention is shown. Figure 2 A perspective view of a supporting device according to an embodiment of the present invention is shown. Figure 3 A three-dimensional view of a supporting device according to an embodiment of the present invention is shown from another angle.

[0030] like Figure 1-Figure 3 As shown, the support device may include a plurality of first support components 1 and at least one second support component 2. The first end (e.g. Figure 2 The upper end of the first support assembly 1 shown in FIG. 1 is connected to the structural support on the structural floor 3. The second end of each first support assembly 1 (as shown in FIG. Figure 2The lower end of the first support assembly 1 shown in the figure is connected to the structural support on the supporting structure 4. Furthermore, the first support assembly 1 is retractable to apply prestress to the structural floor 3 and the supporting structure 4 to prevent the structural floor 3 and the supporting structure 4 from deforming, that is, the first support assembly 1 can support the structural floor 3 based on the supporting structure 4, and can prevent the supporting structure 4 from deforming while supporting the structural floor 3. The direction of the prestress can be the same as the extension direction of the first support assembly 1. The second support assembly 2 connects two adjacent first support assemblies 1. The second support assembly 2 is retractable to apply a supporting force to the first support assembly 1 to support the first support assembly 1. The direction of the supporting force can be the same as the extension direction of the second support assembly 2. The first end of the first support assembly 1 can be any end of the first support assembly 1. The second end of the first support assembly 1 can be the other end of the first support assembly 1.

[0031] In some embodiments, the number of first support assemblies 1 can be adjusted according to the complexity of the environment and engineering requirements to meet the needs of different working environments and different working conditions.

[0032] In some embodiments, the structural support can be a concrete or steel support. The concrete or steel support can be a wedge-shaped structure. A groove is defined on the side of the concrete or steel support facing the first support assembly 1. The groove matches the shape of the end face of the first support assembly 1, so that the matching surface forms a support surface, improving the stability of the support device and facilitating the application of prestress.

[0033] According to an embodiment of the present invention, by providing a first support assembly 1, prestress can be applied between the support structure 4 and the structural floor 3. For example, the first support assembly 1 can be extended. In this way, during the excavation of the foundation pit, the first support assembly 1 can prevent the structural floor 3 and the support structure 4 from being deformed due to the increase in soil pressure or water pressure outside the foundation pit, thereby ensuring the stability of the foundation pit structure and suppressing the settlement and deformation of the building. By providing a second support assembly 2, the first support assembly 1 can be supported, thereby ensuring the overall stability of the first support assembly 1. Furthermore, since the first support assembly 1 and the second support assembly 2 can be extended and retracted, they can adapt to different working conditions, reduce on-site processing time and material waste, and make the support device have a higher effective utilization rate and can be recycled.

[0034] like Figure 2 and Figure 3 As shown, in some embodiments, the support device includes three first support components 1. Further, as Figure 1 As shown, the three first support assemblies 1 and the structural floor 3 form the same angle. Figure 1As shown, the support structure formed by the support device and the structural floor 3 is Y-shaped, with the structural floor 3, support device, and retaining structure 4 forming a triangular support structure. Furthermore, because the three first support assemblies 1 form the same angle with the structural floor 3, i.e., the three first support assemblies 1 are coplanar, there is no need to account for three-dimensional angular deviations when adjusting the length of the first support assemblies 1, thus enabling relatively rapid adjustment. Furthermore, because the three first support assemblies 1 are coplanar, they form a planar structure, thereby enhancing the stability of the support device.

[0035] like Figure 2 As shown, in some embodiments, one of the three first support assemblies 1 (such as Figure 2 The middle first support assembly 1 shown in FIG. 1 is located in the middle of the structural floor 3, and the other two first support assemblies 1 (as shown in FIG. Figure 2 The first support components 1 on both sides shown are relative to one of the first support components 1 (such as Figure 2 The middle first support assembly 1 shown in FIG is symmetrically arranged, and the first ends of the two adjacent first support assemblies 1 (such as Figure 2 The distance between the upper ends of the first support components 1 shown in FIG1 is smaller than the second ends of the two adjacent first support components 1 (as shown in FIG1 ). Figure 2 The distance between the lower ends of the first support assemblies 1 shown in the figure is 1 / 2 (the distance between the lower ends of the first support assemblies 1 shown in the figure). That is, the three first support assemblies 1 can form an isosceles triangle structure, so that the force acting on the structural floor slab 3 can be relatively evenly transmitted to the three first support assemblies 1, and the three first support assemblies 1 can also evenly transmit the force to the supporting structure 4, thereby avoiding the risk of brittle fracture of the first support assemblies 1 due to local stress concentration, improving the safety of foundation pit excavation operations, achieving a relatively stable support for the structural floor slab 3, and relatively evenly preventing the displacement of the supporting structure 4.

[0036] Furthermore, when an emergency situation occurs during the construction process and temporary support is required for the foundation pit, multiple support devices can be set up, that is, by forming multiple "Y-shaped" support structures to jointly support one or more structural floor slabs 3 and one or more supporting structures 4 in the foundation pit, the development of deformation or displacement of the structural floor slabs 3 and supporting structures 4 in the foundation pit can be effectively controlled, thereby reducing the impact on the surrounding environment.

[0037] In some embodiments, each first support assembly 1 includes a first support rod 11 and a second support rod 12. The first end of the first support rod 11 is connected to one of the structural floor 3 and the support structure 4. The first end of the second support rod 12 is connected to the other of the structural floor 3 and the support structure 4. For example, Figure 2As shown, the upper end of the first support rod 11 is connected to the structural floor 3, the lower end of the first support rod 11 is connected to the upper end of the second support rod 12, and the lower end of the second support rod 12 is connected to the support structure 4. Furthermore, the positions of the first support rod 11 and the second support rod 12 can be interchanged, that is, the upper end of the second support rod 12 is connected to the structural floor 3, the lower end of the second support rod 12 is connected to the upper end of the first support rod 11, and the lower end of the first support rod 11 is connected to the support structure 4.

[0038] Furthermore, the diameters of the first support rod 11 and the second support rod 12 can be set to 0.2m to 1m. The first support rod 11 and the second support rod 12 have the same inclination angle relative to the structural floor 3, which can be 50 degrees to 70 degrees. In addition, the first support assembly 1 can be provided with a lifting ring (not shown in the figure). The lifting ring is connected to the first end of the first support rod 11 and the second support rod 12 by welding, that is, the lifting ring can be provided at both ends of the first support assembly 1. By providing the lifting ring, the first support assembly 1 can be hoisted and constructed using lifting equipment, thereby improving construction efficiency.

[0039] Furthermore, the second end of the second support rod 12 is threadedly connected to the second end of the first support rod 11. This allows the first support assembly 1 to be extended or retracted by changing the length of the thread. The first support assembly 1 can be extended to a maximum of 20 meters and retracted to a minimum of 6 meters. The threaded connection between the second support rod 12 and the first support rod 11 allows for relatively quick assembly and disassembly of the first support assembly 1, improving construction convenience and making it suitable for reuse.

[0040] Furthermore, the second support rod 12 and the first support rod 11 can also achieve extension or contraction of the first support assembly 1 through other connection methods. For example, the second support rod 12 and the first support rod 11 can form the first support assembly 1 into a hydraulic support rod based on the hydraulic principle.

[0041] Figure 4 A perspective view of a braking portion and an end fixing member thereof according to an embodiment of the present invention is shown. Figure 5 FIG. 1 is a perspective view showing a braking portion from another angle according to an embodiment of the present invention.

[0042] like Figure 4 and Figure 5As shown, in some embodiments, each first support assembly 1 may further include a braking portion 13. The braking portion 13 may include a housing 131 and a jack 132. The housing 131 is connected to one of the first support rod 11 and the second support rod 12. A storage space may be formed in the housing 131. The housing 131 may be formed as a cylinder having an opening on one side and a hollow interior. The jack 132 may be provided in the storage space. The jack 132 is threadedly connected to the other of the first support rod 11 and the second support rod 12. For example, the housing 131 may be connected to the second support rod 12, and the jack 132 may be threadedly connected to the first support rod 11. By operating the jack 132, the first support rod 11 and the second support rod 12 can be rotated relative to each other to extend or contract the first support assembly 1.

[0043] In some embodiments, the jack 132 may be an oil hydraulic jack or other automatically operated hydraulic device.

[0044] In some embodiments, a brake opening 133 is formed on a sidewall of the housing 131. The handle of the jack 132 (not shown) extends out of the accommodation space through the brake opening 133. The area of ​​the brake opening 133 can be larger than the cross-sectional area of ​​the handle to allow the handle to rotate and / or move within the brake opening 133.

[0045] In some embodiments, each first support assembly 1 may further include a connector 14. The jack 132 is threadedly connected to the other of the first support rod 11 and the second support rod 12 via the connector 14. For example, Figure 2 As shown, the connecting member 14 is threadedly connected to the first support rod 11. The jack 132 drives the connecting member 14 to rotate, so that the first support rod 11 and the second support rod 12 rotate relative to each other.

[0046] Furthermore, the jack 132 may include a handle and a main body. The main body can be controlled to rotate by operating the handle, and the main body drives the connector 14 to rotate, thereby causing the threaded connection between the connector 14 and the other of the first support rod 11 and the second support rod 12 to rotate relative to each other, thereby extending or contracting the first support assembly 1. By providing the connector 14 and utilizing the connector 14 to connect to the jack 132 rather than directly connecting the jack 132 to the first support rod 11 or the second support rod 12, the structural requirements for the first support rod 11 or the second support rod 12 can be reduced, thereby reducing the difficulty of processing the first support rod 11 or the second support rod 12, and the first support rod 11 or the second support rod 12 can be configured as a hollow structure to reduce costs.

[0047] In some embodiments, each first support assembly 1 may further include a plurality of fixing members 15. A plurality of mounting holes are formed on a side of the housing 131 away from the connector 14. Each fixing member 15 is connected to the connector 14 through one of the mounting holes. For example, if the housing 131 is connected to the second support rod 12 and the connector 14 is threadedly connected to the first support rod 11, the mounting holes may be provided between the housing 131 and the second support rod 12.

[0048] Furthermore, the fixing member 15 may include a locking screw and a locking nut mounted thereon. Furthermore, an access hole (not shown) may be provided on the sidewall of the first support rod 11 or the second support rod 12 connected to the housing 131, and a through hole (not shown) may be formed on the bottom plate facing the housing 131, corresponding to the mounting hole of the housing 131. The provision of the access hole facilitates installation of the fixing member 15.

[0049] After inserting the locking screw through the mounting hole and through-hole, the operator rotates it to connect it to the connector 14. The locking screw is then secured to the inner wall of the first support rod 11 or the second support rod 12 using a locking nut. After operating the jack 132 to extend or retract the first support assembly 1, the fixed member 15 can be used to lock the extended or retracted state of the first support assembly 1, maintaining the extended or retracted state.

[0050] Furthermore, the braking portion 13, the connecting member 14, and the fixing member 15 can simultaneously serve as a prestressing device within the first support assembly 1. Specifically, after the first support assembly 1 is installed, the handle of the operating jack 132 can apply prestress between the structural floor 3 and the supporting structure 4. In addition, after the prestress is applied to the first support assembly 1 using the jack 132, the operator can lock the position of the first support rod 11 and the second support rod 12 by tightening the locking nut on the inner wall of the first support rod 11 or the second support rod 12, thereby maintaining the prestress on the first support assembly 1, thereby avoiding the problem of prestress disappearing due to the loss of force of the jack 132 and improving the safety and stability of the project.

[0051] In some embodiments, the second support assembly 2 is arranged closer to the support structure 4 than the structural floor 3. Each second support assembly 2 may include a third support rod 21 and a fourth support rod 22. The first end of the third support rod 21 is connected to one of the two adjacent first support assemblies 1. The first end of the fourth support rod 22 is connected to the other of the two adjacent first support assemblies 1. The second end of the fourth support rod 22 is threadedly connected to the second end of the third support rod 21. Figure 2As shown, in the left second support assembly 2, the third support rod 21 is connected to the left first support assembly 1, and the fourth support rod 22 is connected to the center first support assembly 1. When temporarily supporting a foundation pit, the second support assembly 2 provides support force, improving the overall stability of the support device. Furthermore, because the fourth support rod 22 and the third support rod 21 are threaded together, the thread length can be adjusted to accommodate different pit sizes, facilitating assembly and disassembly and facilitating reuse of the support device.

[0052] In some embodiments, the support structure 4 is at least one of a ground-connected wall and a pile support. Furthermore, the support structure 4 and the structural floor 3 can be connected by pre-reserved embedded parts or by planting reinforcement in the later construction to set up structural supports.

[0053] Furthermore, the support device can be applied to different scenarios and stages of foundation pit excavation, as illustrated below with examples.

[0054] For example, the support device can be designed and installed in advance. During the excavation of the foundation pit, embedded parts can be reserved and structural supports can be installed when the supporting structure 4 and the structural floor 3 are cast. After the supporting structure 4, the structural floor 3 and the structural supports reach the working strength, the first support assembly 1 is installed. The length of the first support assembly 1 is adjusted by operating the handle of the jack 132 to apply prestress between the supporting structure 4 and the structural floor 3. The second support assembly 2 is installed and a supporting force is applied to the first support assembly 1, thereby completing the installation of the support device during the foundation pit excavation process to ensure the stability of the foundation pit structure.

[0055] Figure 6 A second arrangement diagram of the support device in the foundation pit according to an embodiment of the present invention is shown.

[0056] For example, if the support device is not designed and installed in advance, if an emergency occurs during the excavation of the foundation pit, resulting in excessive deformation of the support structure 4, you can refer to Figure 2-Figure 6As shown, a temporary support device can be quickly constructed to ensure the stability of the foundation pit structure. Furthermore, after the construction of the supporting structure 4 and the structural floor 3 is completed, when the foundation pit is excavated, the structural support can be directly constructed on the supporting structure 4 and the structural floor 3 by planting reinforcement; then, a prestressing device is placed inside the first support assembly 1. After the construction of the structural support on the supporting structure 4 and the structural floor 3 is completed, the first support assembly 1 is installed, and the length of the first support assembly 1 is adjusted by the jack 132. The jack 132 is used to apply prestress between the supporting structure 4 and the structural floor 3, the second support assembly 2 is installed and a supporting force is applied to the first support assembly 1, thereby realizing the temporary construction of the support device. In the subsequent foundation pit excavation construction, as the depth of the foundation pit excavation surface 5 increases, the soil pressure or water pressure outside the foundation pit gradually increases. The size of the prestress can be adjusted by the jack 132 to control the deformation of the structural floor 3 and the supporting structure 4, thereby reducing the impact of the foundation pit excavation on the surrounding environment.

[0057] Figure 7 A third arrangement diagram of the support device in the foundation pit according to an embodiment of the present invention is shown.

[0058] For example, when the foundation pit excavation surface 5 is adjacent to an existing underground structure 6 (such as a tunnel, pipeline, etc.), Figure 2-Figure 5 and Figure 7 As shown, a temporary support device can be quickly constructed to protect the foundation pit excavation surface 5 adjacent to the existing underground structure 6. Furthermore, the structural support can be constructed directly on the supporting structure 4 and the structural floor 3 by planting reinforcement; then, a prestressing device is placed inside the first support assembly 1. After the construction of the structural support on the supporting structure 4 and the structural floor 3 is completed, the first support assembly 1 is installed, and the length of the first support assembly 1 is adjusted by the jack 132. The jack 132 is used to apply prestress between the supporting structure 4 and the structural floor 3, the second support assembly 2 is installed and a supporting force is applied to the first support assembly 1, thereby realizing the temporary construction of the support device. In this way, the disturbance of the foundation pit excavation to the adjacent existing underground structure 6 can be reduced.

[0059] In addition, refer to Figure 1-Figure 7As shown, after the excavation of the foundation pit is completed, when the deformation of the supporting structure 4 is close to the standard control value, a temporary support device can be built, that is, the supporting structure 4, the structural floor 3, and the first support assembly 1 can all be used to support the position where the deformation of the supporting structure 4 is too large after the excavation of the foundation pit is completed, thereby playing a control role. The standard control value can be set according to demand. Furthermore, after the excavation of the foundation pit is completed, the structural support can be directly constructed at the depth of the position where the deformation of the supporting structure 4 is too large and on the structural floor 3 by planting reinforcement; then, a prestressing device is placed inside the first support assembly 1, and after the construction of the structural support on the supporting structure 4 and the structural floor 3 is completed, the first support assembly 1 is installed, and the length of the first support assembly 1 is adjusted by the jack 132. Prestress is applied between the supporting structure 4 and the structural floor 3 by the jack 132, the second support assembly 2 is installed and a supporting force is applied to the first support assembly 1, thereby realizing the temporary construction of the support device after the excavation of the foundation pit is completed. In this way, the horizontal displacement of the supporting structure 4 can be prevented from continuing to develop under the action of creep, and the deformation of the structural floor 3 and the supporting structure 4 can be effectively controlled.

[0060] The embodiments of the present disclosure are described above. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of the present disclosure. Although each embodiment has been described separately above, this does not mean that the measures in each embodiment cannot be used in combination to advantage. The scope of the present disclosure is defined by the appended claims and their equivalents. Without departing from the scope of the present disclosure, those skilled in the art may make various substitutions and modifications, which should all fall within the scope of the present disclosure.

Claims

1. A supporting device for suppressing foundation pit deformation and building settlement, characterized in that: include: a plurality of first support assemblies, wherein a first end of each first support assembly is disposed on a structural floor, and a second end of each first support assembly is disposed on a supporting structure, wherein the first support assemblies are retractable to apply prestress to the structural floor and the supporting structure to prevent deformation of the structural floor and the supporting structure, wherein the number of the first support assemblies is adjusted according to the complexity of the environment and the engineering requirements to meet the requirements of different working environments and different working conditions; at least one second support assembly, the second support assembly connecting two adjacent first support assemblies, the second support assembly being retractable and applying a supporting force to the first support assemblies; Wherein, each of the first support components includes: a first support rod, a first end of the first support rod being connected to one of the structural floor and the support structure; a second support rod, a first end of the second support rod being connected to the other of the structural floor and the supporting structure, and a second end of the second support rod being threadedly connected to the second end of the first support rod; A braking portion, comprising: a housing connected to one of the first support rod and the second support rod, wherein a receiving space is formed in the housing; a jack disposed in the accommodation space, the jack being threadedly connected to the other of the first support rod and the second support rod, and operating the jack to cause the first support rod and the second support rod to rotate relative to each other, thereby extending or contracting the first support assembly; Wherein, the other of the first support rod and the second support rod is a hollow structure, and each of the first support assemblies further comprises: A connecting member is threadedly connected to the other of the first support rod and the second support rod, and the jack is connected to the connecting member. The jack drives the connecting member to rotate so as to enable the first support rod and the second support rod to rotate relative to each other.

2. The supporting device for suppressing foundation pit deformation and building settlement according to claim 1 is characterized in that: The three first supporting assemblies are included, and the angles formed by the three first supporting assemblies and the structural floor are the same.

3. The supporting device for suppressing foundation pit deformation and building settlement according to claim 2 is characterized in that: One of the three first support assemblies is located in the middle of the structural floor, and the other two first support assemblies are symmetrically arranged relative to the one first support assembly, and the distance between the first ends of two adjacent first support assemblies is smaller than the distance between the second ends of two adjacent first support assemblies.

4. The supporting device for suppressing foundation pit deformation and building settlement according to any one of claims 1 to 3, characterized in that: A braking opening is formed on the side wall of the shell, and the handle of the jack extends out of the accommodating space from the braking opening. By operating the handle, the first support rod and the second support rod are rotated relative to each other to extend or contract the first support assembly.

5. The supporting device for suppressing foundation pit deformation and building settlement according to claim 1 is characterized in that: Each of the first support components further includes a plurality of fixing members, wherein a plurality of mounting holes are formed on a side of the shell away from the connecting member, and each of the fixing members passes through one of the mounting holes and is connected to the connecting member to maintain the extension or contraction of the first support component.

6. The supporting device for suppressing foundation pit deformation and building settlement according to any one of claims 1 to 3, characterized in that: Each of the second support assemblies comprises: a third support rod, wherein a first end of the third support rod is connected to one of two adjacent first support assemblies; A fourth support rod, wherein a first end of the fourth support rod is connected to the other of the two adjacent first support assemblies, and a second end of the fourth support rod is threadedly connected to the second end of the third support rod.

7. The supporting device for suppressing foundation pit deformation and building settlement according to claim 1 is characterized in that: The support structure is at least one of a ground-connected wall and a pile support.

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