An anti-floating anchoring device for underground structures

Abstract

The present invention relates to an anti-floating anchoring device for underground structures, comprising: an anchor rod for connecting building components and providing anchoring tension; an anchoring bottom rod with several positioning plates hinged to the outer surface of its lower part and sleeved with the anchor rod at its upper part; there are 2 groups of pipes inside the positioning plates, one group is used to inject pressure fluid to deploy the positioning plates; the other group is used to pour concrete to enhance the anchoring capacity of the positioning plates; an adjustable tension device is a power mechanism for providing adjustable tension magnitude, several liquid bags are arranged axially stacked inside the anchor rod, each liquid bag is provided with a connecting pipe passing through the inside of the anchor rod and leading out to the top of the anchor rod; a connecting seat is installed on the underground building structure as a force-transmitting component for anti-buoyancy and is hingedly connected to the anchor rod through a fixing pin. The anti-floating anchoring tension of the present invention can be adjusted in magnitude, which can cope with the change of anti-floating tension caused by the change of the content in the underground building pool body, and can maintain the stability of the spatial position of the underground building structure.

Description

Technical Field

[0001] The invention relates to an anchoring device, in particular to an anti-floating anchoring device for underground structures. Background Art

[0002] At present, underground structures used as water storage tanks, sewage tanks and even low-temperature tanks (liquid nitrogen, etc.) have a tendency to float, which puts forward the need for anti-floating for structural integrity and crack resistance and impermeability. When the above-mentioned structure is applied to soft soil foundation, the anti-floating property is particularly prominent, and considering that the contents of the tank are in a changing state, the required anti-floating force is also in a changing state, which is not conducive to its impermeability.

[0003] How to maintain the structural integrity and crack resistance and impermeability of the underground pool structure in a soft soil foundation by maintaining the anti-floating performance of the main body is a technical problem that needs to be solved. Summary of the invention

[0004] In order to solve the above technical problems, the purpose of the present invention is to provide an anti-floating anchoring device for underground structures, which can maintain the anti-floating performance of underground pool structures in soft soil foundations to maintain structural integrity and crack resistance and impermeability.

[0005] To achieve the above object, the technical solution of the present invention is: an anti-floating anchoring device for underground structures, comprising:

[0006] Anchor rods are components used to connect building components and provide anchoring tension;

[0007] An anchoring bottom rod, the lower outer surface of which is hinged with a plurality of positioning plates, and the upper part is sleeved with the anchor rod;

[0008] The positioning plate has two sets of pipes inside, one set is used to inject pressure fluid to unfold the positioning plate; the other set is used to pour concrete to strengthen the anchoring ability of the positioning plate and provide a stable anchoring foundation;

[0009] The adjustable tension device is a power mechanism for providing adjustable tension. Several liquid capsules are stacked and arranged in the anchor rod along the axial direction. Each liquid capsule is provided with a connecting pipe passing through the inside of the anchor rod and leading outward to the top of the anchor rod.

[0010] The connecting seat is installed on the underground building structure as a force transmission component to resist buoyancy and is hingedly connected to the anchor rod through a fixing pin.

[0011] Furthermore, the anchor rod is a cylindrical hollow rod made of metal, and the top of the anchor rod is hingedly connected to the connecting seat by a fixing pin.

[0012] Furthermore, the cross-section of the anchoring bottom rod is a hollow cylinder and is made of metal.

[0013] Furthermore, a seal and a lubricant are installed at the joint between the upper part of the anchor bottom rod and the anchor rod sleeve.

[0014] Furthermore, for the adjustable tension device, when pressure fluid is injected, the liquid bladder expands, generating a downward pushing force on the anchor rod, pulling the anchor rod towards the anchoring bottom rod direction to increase the anti-floating tension; when the high-pressure fluid is extracted, the liquid bladder shrinks, relaxing the anchor rod and reducing the anti-floating tension, which is used to maintain the stability of the spatial position of the underground structure, thereby improving the structural stability and impermeability of the main body.

[0015] The beneficial effects of the present invention are as follows:

[0016] (1) The anchoring anti-floating tension can be adjusted in size to cope with the change of anti-floating tension caused by the change of the content in the underground building pool.

[0017] (2) It can maintain the stability of the spatial position of the underground building structure, reduce the non-uniformity of the force on the main body structure caused by the non-uniform settlement of the soil body, and improve the stability and impermeability of the main body structure. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of the anti-floating anchoring device for underground structures of the present invention;

[0019] Figure 2 is a schematic working diagram of the anti-floating anchoring device for underground structures of the present invention. Detailed Embodiments

[0020] The following specifically describes the embodiments of the present invention in conjunction with the drawings and embodiments.

[0021] As Figure 1 shown, the anti-floating anchoring device for underground structures of the present invention includes an anchoring bottom rod 1, a positioning plate 2, an adjustable tension device 3, an anchor rod 4, a connecting seat 5, and a fixing pin 6.

[0022] The anchor rod 4 is a member for connecting building components and providing anchoring tension. It is a cylindrical hollow rod made of metal. The top of the anchor rod 4 is hinged to the connecting seat 5 by a fixing pin 6.

[0023] The connecting seat 5 is installed on the underground building structure and serves as a force-transmitting member for anti-buoyancy. It is hinged to the anchor rod 4 by a fixing pin 6.

[0024] The cross-section of the anchoring bottom rod 1 is integrally a hollow cone and is made of metal. A plurality of positioning plates 2 are installed on its lower outer surface and are hinged. The upper part of the anchoring bottom rod 1 is sleeved with the anchor rod 4, and a seal and a lubricant are installed between the two.

[0025] The positioning plate 2 is made of metal and is internally provided with 2 groups of pipelines. One group is used for injecting pressure fluid to unfold the positioning plate; the other group is used for pouring concrete to enhance the anchoring ability of the positioning plate and provide a stable anchoring foundation.

[0026] The function of the adjustable tension device 3 is to provide a power mechanism for adjusting the magnitude of the tension. Its structure is that several liquid sacs (such as 2) are arranged axially in a stacked manner. Each liquid sac is provided with a connecting pipe passing through the interior of the anchor rod 4 and leading out to the top of the anchor rod 4. When pressure fluid is injected, the liquid sac expands, generating a downward pushing force on the anchor rod 4, pulling the anchor rod 4 towards the anchoring bottom rod 1 to increase the anti-floating tension; when the high-pressure fluid is drawn out, the liquid sac shrinks, relaxing the anchor rod 4 to reduce the anti-floating tension. It can maintain the stability of the spatial position of the underground structure, thereby improving the structural stability and impermeability of the main body.

[0027] As Figure 2 As shown, insert the anti-floating anchoring device for underground structures of the present invention into the pilot hole at the anchoring position of the underground structure, and apply an axial force to press it to a predetermined depth A. Then rotate the anti-floating anchoring device for underground structures of the present invention and continue to apply an axial force. At the same time, inject pressure fluid (such as water-ethylene glycol, etc.) into the expansion cylinder of the positioning plate 2. The expansion cylinder extends to push the positioning plate 2 to open until the positioning plate 2 is fully opened. During this process, inject a certain amount of pressure fluid into the liquid sac of the adjustable tension device 3 to maintain a certain length ratio between the anchoring bottom rod 1 and the anchor rod 4. When the device of the present invention is pressed to a predetermined depth B, stop rotating and applying pressure, and then pour concrete into another pipe of the positioning plate 2 to increase the soil bearing capacity of the anchoring area. Finally, install the connecting seat 5 on the underground framework and connect it to the anchor rod 4 with the fixing pin 6.

[0028] When the required anti-floating force of the underground structure increases, inject a small amount of pressure fluid into the upper liquid sac of the adjustable tension device 3, and the pressure is higher than the initial pressure value. When the required anti-floating force of the underground structure decreases, draw out a small amount of pressure fluid from the upper liquid sac of the adjustable tension device 3, and the pressure is lower than the initial pressure value.

[0029] When uneven settlement occurs in the soil area of the underground structure and the length of the anchor rod needs to be increased, inject a certain amount of pressure fluid into the lower liquid sac of the adjustable tension device 3, and the pressure is adjusted according to the demand; draw out the pressure fluid in the upper liquid sac of the adjustable tension device 3 with equal volume, and stop injecting after extending to the predetermined length. When the length of the anchor rod needs to be reduced, draw out a certain amount of pressure fluid from the lower liquid sac of the adjustable tension device 3, and the pressure is adjusted according to the demand. Inject the pressure fluid in the upper liquid sac of the adjustable tension device 3 with equal volume, and stop after retracting to the predetermined length.

Claims

1. An anti-floating anchoring device for underground structures, characterized in that, Comprising: An anchor rod, which is a component for connecting building components and providing anchoring tension; An anchoring bottom rod, with several positioning plates hinged on its lower outer surface and sleeved with the anchor rod at the upper part; The positioning plate has 2 groups of pipes inside. One group is used to inject pressure fluid to expand the positioning plate; the other group is used to pour concrete to enhance the anchoring ability of the positioning plate and provide a stable anchoring foundation; An adjustable tension device, which is a power mechanism for providing adjustable tension. Several liquid sacs are arranged axially stacked inside the anchor rod. Each liquid sac has 1 connecting pipe passing through the inside of the anchor rod and leading out to the top of the anchor rod; A connecting seat, which is installed on the underground building structure, serves as a force-transferring component for anti-buoyancy, and is hinged to the anchor rod through a fixing pin.

2. The anti-floating anchoring device for underground structures according to claim 1, wherein: The anchor rod is a cylindrical hollow rod made of metal, and is hinged to the connecting seat at the top of the anchor rod through a fixing pin.

3. The anti-floating anchoring device for underground structures according to claim 1, wherein: The cross-section of the anchoring bottom rod is a hollow cylinder and is made of metal.

4. The anti-floating anchoring device for underground structures according to claim 1, characterized in that: Seals and lubricants are installed at the sleeve joint between the upper part of the anchoring bottom rod and the anchor rod.

5. The anti-floating anchoring device for underground structures according to claim 1, characterized in that: For the adjustable tension device, when pressure fluid is injected, the liquid sac expands, generating a downward pushing force on the anchor rod, pulling the anchor rod towards the anchoring bottom rod direction to increase the anti-buoyancy tension; when the high-pressure fluid is drawn out, the liquid sac shrinks, relaxing the anchor rod and reducing the anti-buoyancy tension, which is used to maintain the stability of the spatial position of the underground structure, thereby improving the structural stability and impermeability of the main body.

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