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CN-121994607-A - High-strength reinforced concrete circular well wall structure loading device and method

CN121994607ACN 121994607 ACN121994607 ACN 121994607ACN-121994607-A

Abstract

The invention discloses a loading device and a loading method for a high-strength reinforced concrete circular well wall structure, which belong to the technical field of expansive soft rock construction and comprise a drawable frame, wherein a circular frame is arranged in the drawable frame, a radial loading mechanism is arranged in the circular frame, the radial loading mechanism is used for loading the round test piece, the radial loading mechanism is electrically connected with the control mechanism, the bottom in the drawable frame is slidably connected with the drawing bottom plate, the top surface of the drawing bottom plate is provided with the injection molding mechanism, and the top surface of the drawable frame is provided with the monitoring mechanism. The loading device is strong in practicability, simple in structure and low in cost, the round test piece is horizontally placed, so that the test piece does not need to be moved during pouring and loading, the operation is simple and convenient, the deformation monitoring range of the round test piece can be freely adjusted by arranging the monitoring mechanism, a concrete test piece is poured outside the loading device, and the concrete test piece is pushed into the loading device for testing by pulling the bottom plate, so that the testing efficiency is improved.

Inventors

  • BAI YAO
  • Han Jiazhuang
  • LIU NAN
  • LIU HAOYUAN
  • Lei Yihang
  • LUO YAN
  • YAN JIAXU
  • SUN DONGXU
  • TONG XIAO
  • HAN FENG
  • ZHAO YAN
  • XU ZHIBO
  • SHAN RENLIANG

Assignees

  • 中国矿业大学(北京)

Dates

Publication Date
20260508
Application Date
20260212

Claims (10)

  1. 1. The loading device for the high-strength reinforced concrete circular well wall structure is characterized by comprising a drawable frame (4), wherein a circular frame (1) is arranged in the drawable frame (4), a radial loading mechanism is arranged in the circular frame (1) and is used for loading a circular test piece (2), the radial loading mechanism is electrically connected with a control mechanism, a drawing bottom plate (11) is connected to the bottom in the drawable frame (4) in a sliding manner, an injection molding mechanism is arranged on the top surface of the drawing bottom plate (11), and a monitoring mechanism is arranged on the top surface of the drawable frame (4).
  2. 2. The high-strength reinforced concrete circular well wall structure loading device according to claim 1, wherein the monitoring mechanism comprises a vertical support column (5) fixedly connected to one side of the top surface of the drawable frame (4), a connecting plate is fixedly connected to the top of the vertical support column (5), a horizontal plane rotating rod (8) is rotatably connected to the connecting plate, a transverse support rod (6) is fixedly connected to the top surface of the horizontal plane rotating rod (8), a sliding groove (9) is formed in the transverse support rod (6), a sliding block is connected to the sliding groove (9) in a sliding mode, a vertical sliding plate (7) is fixedly connected to the sliding block, a camera box (10) is arranged on the vertical sliding plate (7), and a camera is arranged in the camera box (10).
  3. 3. The loading device for the high-strength reinforced concrete circular well wall structure according to claim 2, wherein the connecting plate is provided with a first chute, the horizontal plane rotating rod (8) comprises a rotating disc (801) arranged on the top surface of the connecting plate, the rotating disc (801) is provided with a disc groove (802), the disc groove (802) is communicated with the first chute, the disc groove (802) is slidably connected with a limit knob (803) in the first chute, the bottom of the limit knob (803) is fixedly connected with a limit bottom plate (804), and the limit bottom plate (804) is positioned below the first chute.
  4. 4. The high-strength reinforced concrete circular well wall structure loading device according to claim 2, wherein the vertical sliding plate (7) comprises a sliding sleeve (704) fixedly connected with the sliding block, a pull plate (702) is connected in a sliding manner in the sliding sleeve (704), a limiting plate (701) is fixedly connected to the top surface of the pull plate (702), a plurality of reserved holes (703) are formed in the pull plate (702) at equal intervals, a rotary rod (706) is fixedly connected to the bottom of the sliding sleeve (704), the rotary rod (706) is matched with the camera box (10), a limiting hole (705) is formed in the sliding sleeve (704), and a fixing piece is arranged in the limiting hole (705).
  5. 5. The loading device for the high-strength reinforced concrete circular well wall structure according to claim 4, wherein one end of the camera box (10) is provided with a rotary rod sleeve (102), the rotary rod (706) is arranged in the rotary rod sleeve (102), one end of the camera box (10) far away from the rotary rod sleeve (102) is provided with a closing strip (101), and the bottom surface of the camera box (10) is provided with a camera supporting plate (103).
  6. 6. The loading device for the high-strength reinforced concrete circular well wall structure according to claim 1, wherein the radial loading mechanism comprises a plurality of hydraulic cylinders (3) which are circumferentially and equally spaced in the circular frame (1), and the hydraulic cylinders (3) are electrically connected with the control mechanism.
  7. 7. The loading device for the high-strength reinforced concrete circular well wall structure according to claim 6, wherein the control mechanism comprises a control system (19) electrically connected with the hydraulic cylinder (3), the control system (19) is electrically connected with a computer and software system (20), and a stand (21) is arranged on one side of the control system (19).
  8. 8. The loading device for the high-strength reinforced concrete circular well wall structure according to claim 1, wherein the injection molding mechanism comprises a lifting oil cylinder (15) fixedly connected to the top surface of the drawing bottom plate (11), a pouring bearing platform (16) is fixedly connected to the top surface of the lifting oil cylinder (15), and a pouring baffle is arranged on the pouring bearing platform (16).
  9. 9. The loading device for the high-strength reinforced concrete circular well wall structure according to claim 8, wherein the pouring baffle plate comprises an external inserting baffle plate (18) arranged on the top surface of the pouring bearing platform (16), and an internal inserting baffle plate (17) is arranged in the external inserting baffle plate (18).
  10. 10. A method for loading a high-strength reinforced concrete circular well wall structure, based on the high-strength reinforced concrete circular well wall structure loading device as claimed in any one of claims 1 to 9, characterized by comprising the following steps: S1, fixing a template and pouring a test piece, namely selecting an external inserted baffle (18) and an internal inserted baffle (17) with proper inner diameters to be fixed on a pouring bearing platform (16), placing a reinforcement cage into the casting bearing platform, and pouring concrete to form a circular test piece (2); S2, maintaining and installing the test piece, namely pushing a lifting oil cylinder (15) for bearing the test piece into the drawable frame (4) after the test piece is maintained to a preset strength, performing centering locking by using a limiting device, operating the lifting oil cylinder (15) to lift the round test piece (2) to be consistent with the horizontal height of the hydraulic oil cylinder (3), and controlling a hydraulic rod of the hydraulic oil cylinder (3) to extend out to be in contact with the round test piece (2); S3, adjusting the horizontal and vertical positions of the monitoring mechanism to align the monitoring mechanism with the region to be observed of the round test piece (2), and installing and fixing a high-speed camera; S4, loading and data acquisition, namely setting a loading program through a computer and software system (20), starting a hydraulic cylinder (3) to load the round test piece (2), and recording deformation data of the round test piece (2) through a high-speed camera monitoring mechanism until the test piece is damaged; s5, after the test piece recovery is finished, controlling the hydraulic cylinder (3) to unload, lowering the lifting cylinder (15) and moving the round test piece (2) out of the device.

Description

High-strength reinforced concrete circular well wall structure loading device and method Technical Field The invention belongs to the technical field of expansive soft rock construction, and particularly relates to a device and a method for loading a high-strength reinforced concrete circular well wall structure. Background The high-strength round reinforced concrete round well wall structure is a common supporting structure of surrounding rocks of underground engineering, particularly when a shaft is supported in an extremely soft expandable rock stratum, the common supporting modes such as anchor rods, anchor ropes, section steel supports, steel tube concrete supports and the like cannot reach the design requirements, and only high-strength passive supporting is adopted to achieve good effects on the surrounding rock supporting of the stratum. The reinforced concrete well wall structure not only can meet the requirement of supporting strength, but also solves the problem of large deformation extrusion of the plugging mudstone, and is an optimal supporting mode of an expansive soft rock stratum. The supporting structure must be tested indoors before being applied on site, and only the reinforced concrete supporting member meeting the strength and deformation requirements can be used on site. The existing loading device can carry out loading tests on components such as reinforced concrete beams, columns and arcs, but the indoor tests on full-circular and large-volume reinforced concrete components are not realized, on one hand, the components poured in the chambers with larger volumes of the components are moved and installed in a complex manner, and on the other hand, the existing equipment is behind the deformation monitoring technology of the components, so that the structural deformation of the well wall cannot be tracked and monitored in an omnibearing and high-precision manner. Disclosure of Invention The invention aims to provide a device and a method for loading a high-strength reinforced concrete circular well wall structure, which are used for solving the problems in the prior art. The invention provides a high-strength reinforced concrete circular well wall structure loading device which comprises a drawable frame, wherein a circular frame is arranged in the drawable frame, a radial loading mechanism is arranged in the circular frame and is used for loading a circular test piece, the radial loading mechanism is electrically connected with a control mechanism, the bottom in the drawable frame is slidably connected with a drawing bottom plate, the top surface of the drawing bottom plate is provided with an injection molding mechanism, and the top surface of the drawable frame is provided with a monitoring mechanism. Optionally, the monitoring facilities is in including the rigid coupling vertical pillar of pull frame top surface one side, but the top rigid coupling of vertical pillar has the connecting plate, rotate on the connecting plate and be connected with horizontal plane dwang, the top surface rigid coupling of horizontal plane dwang has horizontal branch, be equipped with sliding groove on the horizontal branch, sliding connection has the slider in the sliding groove, the slider rigid coupling has vertical sliding plate, be equipped with the camera box on the vertical sliding plate, be equipped with the camera in the camera box. Optionally, be equipped with first spout on the connecting plate, the horizontal plane dwang is including setting up rotatory disc of connecting plate top surface, be equipped with the disc recess on the rotatory disc, the disc recess with first spout intercommunication, the disc recess with sliding connection has spacing knob in the first spout, spacing knob's bottom rigid coupling has spacing bottom plate, spacing bottom plate is located the below of first spout. Optionally, the vertical sliding plate include with the slip sleeve of slider rigid coupling, sliding connection has the pull board in the slip sleeve, the top surface rigid coupling of pull board has the limiting plate, equidistant a plurality of preformed holes that are equipped with on the pull board, the bottom rigid coupling of slip sleeve has the dwang, the dwang with camera box looks adaptation, be equipped with the limiting hole on the slip sleeve, be equipped with the mounting in the limiting hole. Optionally, the one end of camera box is equipped with the dwang sleeve, the dwang sets up in the dwang sleeve, the camera box is kept away from the telescopic one end of dwang is equipped with the closure strip, the bottom surface of camera box is equipped with the camera carrier plate. Optionally, the radial loading mechanism includes a plurality of hydraulic cylinders circumferentially equally spaced in the circular frame, and the hydraulic cylinders are electrically connected with the control mechanism. Optionally, the control mechanism includes with hydraulic cylinder electric connection's control