Search

CN-224214186-U - Reinforced concrete lining structure with yielding displacement nodes

CN224214186UCN 224214186 UCN224214186 UCN 224214186UCN-224214186-U

Abstract

The utility model provides a reinforced concrete lining structure with yield displacement nodes, which comprises an artificial chamber surrounding rock and a lining arranged in the surrounding rock, wherein a circumferential lining main rib is connected to a plurality of yield displacement node prefabricated parts after being disconnected, each yield displacement node prefabricated part comprises a plurality of alternate prefabricated short steel bars and prefabricated steel plates used for inserting the prefabricated short steel bars, the prefabricated short steel bars on the same side are horizontally arranged in the same prefabricated steel plates in an array mode, the prefabricated steel plates are used for limiting the axial and radial displacement of the prefabricated short steel bars along the artificial chamber, the yield displacement node prefabricated parts and the lining main rib are integrally poured with concrete, the circumferential stretching deformation of the concrete along with the linear displacement of the lining main rib reaches the circumferential stretching deformation controllable range of the artificial chamber, the circumferential stretching deformation of the lining structure outside the displacement nodes is ensured to be reduced, the cracks of the lining concrete are controllable, the bearing capacity of the surrounding rock is fully exerted, and the engineering economy of the artificial gas storage chamber is improved.

Inventors

  • XIE XINBO
  • LI QIANG
  • XU HAONAN
  • LI XICHEN
  • XIA CAICHU
  • XU CHEN

Assignees

  • 升能能源(浙江)有限公司

Dates

Publication Date
20260508
Application Date
20250408

Claims (7)

  1. 1. A reinforced concrete lining structure with yielding displacement nodes comprises artificial chamber surrounding rocks and linings arranged in the surrounding rocks, and is characterized in that annular lining main ribs (13) are connected to a plurality of yielding displacement node prefabricated parts (12) after being disconnected, each yielding displacement node prefabricated part (12) comprises a plurality of alternate prefabricated short steel bars (5) and prefabricated steel plates (1) used for penetrating the prefabricated short steel bars (5), the prefabricated short steel bars (5) on the same side are horizontally arranged in the same prefabricated steel plates (1) in an array manner, the prefabricated steel plates (1) are used for limiting the prefabricated short steel bars (5) to displace axially and radially along the artificial chamber, the disconnected end of each lining main rib (13) is arranged in the yielding displacement node prefabricated part (12) and carries out relative linear displacement, concrete is integrally poured between the yielding displacement node prefabricated parts (12) and the lining main ribs (13), and the annular stretching deformation of the concrete along with the linear displacement of the lining main ribs (13) reaches the annular stretching deformation of the artificial chamber in a controllable range.
  2. 2. The reinforced concrete lining structure according to claim 1, wherein each prefabricated short steel bar (5) is a forward prefabricated short steel bar (5-1) and a reverse prefabricated short steel bar (5-2), a yielding displacement deformation section (6) is preset in the middle, each lining main steel bar (13) is a forward lining main steel bar (13-1) and a reverse lining main steel bar (13-2) after being disconnected respectively, two forward prefabricated short steel bars (5-1) are fixedly connected to the disconnected ends of the forward lining main steel bar (13-1), and two reverse prefabricated short steel bars (5-2) are fixedly connected to the disconnected ends of the reverse lining main steel bar (13-2).
  3. 3. The reinforced concrete lining structure according to claim 2, wherein one end of the forward prefabricated short steel bar (5-1) is connected with the forward lining main bar (13-1) through extension of the sleeve (4), the other end of the forward prefabricated short steel bar is connected with the sleeve (4) in a sealing mode, the sleeve (3) is sleeved on the outer wall of the sleeve (4), one end of the reverse prefabricated short steel bar (5-2) is connected with the reverse lining main bar (13-2) through extension of the sleeve (4), the sleeve (3) is sleeved on the outer wall of the other end of the reverse prefabricated short steel bar (5) in a sealing mode, and the yielding deformation section (6) of the prefabricated short steel bar (5) allows the lining main bar (13) to linearly displace and is limited by the contact surface of the sleeve (4) and the prefabricated steel plate (1).
  4. 4. The reinforced concrete lining structure according to claim 3, wherein the outer surfaces of the displacement node prefabricated members (12) and the lining main ribs (13) are coated with epoxy paint (8), and high-ductility concrete (9) is integrally poured.
  5. 5. The reinforced concrete lining structure according to claim 3, wherein each prefabricated short steel bar (5) is a forward prefabricated short steel bar (5-1) and a non-displacement locking prefabricated short steel bar (5-3), a displacement deformation section (6) is preset in the middle of the forward prefabricated short steel bar (5-1), each lining main steel bar (13) is respectively disconnected to form a forward lining main steel bar (13-1) and a non-displacement locking lining main steel bar (13-3), two disconnected ends of the forward lining main steel bar (13-1) are respectively and fixedly connected with two forward prefabricated short steel bars (5-1), and two disconnected ends of the locking lining main steel bar (13-3) are respectively and fixedly connected with two locking prefabricated short steel bars (5-3).
  6. 6. The reinforced concrete lining structure according to claim 5, wherein one end of the forward prefabricated short steel bar (5-1) is connected with the forward lining main bar (13-1) through extension of the sleeve (4), the other end of the forward prefabricated short steel bar is connected with the sleeve (4) in a sealing mode, the sleeve (3) is sleeved on the outer wall of the sleeve (4), one end of the locking prefabricated short steel bar (5-3) is connected with the locking lining main bar (13-3) through extension of the sleeve (4), the sleeve (3) is sleeved on the outer wall of the other end of the locking prefabricated short steel bar (4), the yielding deformation section (6) of the forward prefabricated short steel bar (5-1) allows the lining main bar (13) to linearly displace and is limited by the contact surface of the sleeve (4) and the prefabricated steel plate (1), the yielding joint prefabricated member (12) and the lining main bar (13) are integrally cast with the common concrete (10), and a structural joint (11) is arranged in the common concrete (10) and is fixedly perpendicular to the outer side of the locking prefabricated short steel bar (5-3) sleeve (3).
  7. 7. The reinforced concrete lining structure according to claim 3 or 6, wherein the prefabricated short steel bars (5), the prefabricated steel plates (1), the preset displacement deformation section (6), the gap between the sleeve (4) and the sleeve (3) are filled with an elastic foaming agent (7), the elastic foaming agent (7) covers the prefabricated short steel bars (5), and the outer diameter of the prefabricated short steel bars (5) is not smaller than the outer diameter of the lining main bars (13) to be connected.

Description

Reinforced concrete lining structure with yielding displacement nodes Technical Field The utility model relates to the technical field of compressed air energy storage, in particular to a reinforced concrete lining structure with yielding displacement nodes. Background The compressed air energy storage technology is a large-capacity long-time physical energy storage technology which is greatly developed and popularized in China at present, and has the advantages that no fossil fuel is combusted and harmful substances are discharged in the energy storage process, the large-capacity long-time storage can be realized, the power generation and the power consumption of a power grid can be greatly improved, the peak regulation capacity of the power grid is improved, and the intermittent problem of renewable energy power generation is solved. In order to better reduce the construction cost of an artificial chamber of the compressed air energy storage project, the technical field of compressed air energy storage is researched to adopt a flexible sealing layer as a compressed air sealing layer so as to solve the problems of high price, high construction difficulty, long construction period and the like of high-strength steel serving as the sealing layer. At present, a flexible sealing material is used as a high-pressure air sealing layer, and a reinforced concrete lining is required to be arranged in the artificial chamber. When the elastic modulus of surrounding rock is not high, the underground artificial chamber possibly generates larger circumferential deformation when bearing high-pressure air storage pressure, so that lining concrete is larger in cracks, and the flexible sealing material is subjected to crack collapse and damage, so that the reinforcement rate of a lining structure can be improved for controlling the cracks of the lining concrete and preventing the crack collapse and damage of the flexible sealing layer, but the problems of material waste, insufficient economy and the like exist. And the free stretching deformation of the reinforced concrete lining cannot be flexibly adjusted according to surrounding rock conditions and the fluctuation range of gas storage pressure, so that the structural redundancy is high under the working condition of low deformation requirement. Therefore, a reinforced concrete structure capable of guaranteeing the safety of the lining structure and reducing the cost is needed. Disclosure of Invention The utility model provides a reinforced concrete lining structure with a yielding displacement node, which is characterized in that a plurality of yielding displacement node prefabricated members are circumferentially arranged through the lining structure, so that the circumferential tensile deformation of the lining structure mainly occurs on the yielding displacement node, when the yielding displacement node is deformed to reach a set value, the tensile load is borne, the problems that the lining structure of an artificial chamber bears the excessive proportion of the internal pressure of gas storage and the deformation of the lining structure is too large to be beneficial to the control of concrete cracks are solved, the circumferential tensile deformation of the lining structure outside the yielding displacement node is ensured to be smaller, the cracks of lining concrete are controllable, the bearing capacity of surrounding rock is fully exerted, and the engineering economy of the artificial gas storage chamber is improved, and the utility model provides the following technical scheme: The utility model relates to a reinforced concrete lining structure with yield displacement nodes, which comprises an artificial chamber surrounding rock and a lining arranged in the surrounding rock, wherein a circumferential lining main bar is disconnected and then connected with a plurality of yield displacement node prefabricated parts, each yield displacement node prefabricated part comprises a plurality of alternate prefabricated short steel bars and prefabricated steel plates used for penetrating the prefabricated short steel bars, the prefabricated short steel bars on the same side are horizontally arranged in the same prefabricated steel plates in an array manner, and the prefabricated steel plates are used for limiting the axial and radial displacement of the prefabricated short steel bars along the artificial chamber. The breaking end of each lining main rib is arranged in the prefabricated member of the displacement node and carries out relative linear displacement, the prefabricated member of the displacement node and the lining main rib are integrally poured with concrete, and the annular stretching deformation of the concrete along with the linear displacement of the lining main rib reaches the annular stretching deformation of the artificial chamber within the controllable range. By adopting the technical scheme, the utility model can also adopt or combine the following tec