Bearing force reaction frame for anchorage foundation pit and test system

Abstract

The utility model relates to a bearing capacity reaction frame for an anchorage foundation pit and a test system, and relates to the technical field of capital construction equipment. The device comprises a jack and two vertically-arranged supporting rods, the supporting rods are oppositely arranged, the supporting rods are sleeved with a beam plate, the beam plate can move on the supporting rods in the vertical direction, the jack is located between the two supporting rods, the top end of the jack abuts against the bottom wall of the beam plate, limiting blocks are fixed to the tops of the supporting rods, and the top wall of the beam plate abuts against the limiting blocks. A plurality of fixing blocks are fixed to the side wall of the supporting rod and located at the bottom of the supporting rod. The method and the device have the effect of relatively high accuracy of the test result.

Description

Technical Field

[0001] The present application relates to the field of infrastructure equipment, and in particular to a bearing capacity reaction frame and a testing system for an anchoring foundation pit. Background Art

[0002] The reaction frame is mainly composed of beams, columns, bases, lifting systems, hydraulic systems, adjustment pads, etc. It is mainly used for the calibration of jacks, and can also be used for compression testing of various materials such as large concrete components and large workpieces.

[0003] In the related technology, a Chinese patent with authorization announcement number CN215669419U discloses a bearing capacity reaction frame and test system for an anchoring foundation pit, including a beam-slab; a first jack is provided on one side of the beam-slab, one end of the first jack is used to cooperate with the position to be tested, and the other end of the first jack is connected to the side of the beam-slab; it also includes a supporting anchor rod, one end of the supporting anchor rod is used to penetrate into the ground to fix the reaction frame, and the other end of the supporting anchor rod is connected to one end of a connecting rod; a locking piece is provided on the other end of the connecting rod, the locking piece cooperates with the other side of the beam-slab, and the locking piece is used to limit the movement of the beam-slab away from the supporting anchor rod.

[0004] The locking piece can only limit the movement of the beam on the connecting rod, but the beam is pushed by the jack, so that the beam is easy to move up with the locking piece, so that the supporting anchor rod is pulled out of the ground, resulting in incorrect pressure changes of the jack, making the test results less accurate, so it needs to be improved. Utility Model Content

[0005] In order to improve the problem that beams and slabs are easily moved upwards along with supporting anchor rods, resulting in low accuracy of test results, the present application provides a bearing capacity reaction frame and a test system for an anchoring foundation pit.

[0006] The present application provides a bearing capacity reaction frame and a test system for an anchor foundation pit, which adopts the following technical solutions:

[0007] A bearing capacity reaction frame and test system for an anchor foundation pit, comprising a jack and two vertically arranged support rods, the support rods are arranged opposite to each other, a beam plate is sleeved on the support rods, the beam plate can move in a vertical direction on the support rods, the jack is located between the two support rods, the top end of the jack abuts against the bottom wall of the beam plate, a limiting block is fixed on the top of the support rod, the top wall of the beam plate abuts against the limiting block, a plurality of fixed blocks are fixed on the side walls of the support rod, and the fixed blocks are located at the bottom of the support rod.

[0008] By adopting the above technical solution, when in use, first insert the bottom ends of the two support rods into the ground until the fixed block is completely submerged in the ground, and then compact the ground. At this time, the soil and gravel in the ground fill the surroundings of the fixed block and the support rod, and then use the jack to push the beam upward, and the beam cannot move upward due to the restriction of the limit block, so that the jack is subjected to a downward reaction force, and then observe the pressure change of the jack, so as to achieve the bearing capacity test of the position to be tested of the beam. In the process of the jack pushing the beam, the soil and gravel on the top of the fixed block restricts the fixed block from moving upward, so that the support rod is not easy to move upward, that is, the beam is not easy to push the limit block to drive the entire support rod to move away from the jack, so that the jack can be subjected to the corresponding reaction force, thereby improving the accuracy of the test results.

[0009] Optionally, a guide surface is provided on the side wall of the fixing block, and the bottom end of the guide surface is inclined toward a direction close to the central axis of the support rod.

[0010] By adopting the above technical solution, when the support rod is inserted into the ground, it drives the fixed block to move, so that the bottom end of the fixed block pushes the soil first. In the process of the fixed block going deep into the ground, the guide surface contacts the soil, plays a guiding role, and drives the soil to gradually spread, which makes it easier for the fixed block to push the soil away. After the fixed block is completely buried in the ground, the soil is compacted to achieve the installation of the fixed block underground, which is convenient to operate.

[0011] Optionally, a plurality of mounting holes are provided on the side wall of the support rod, and the plurality of mounting holes are evenly distributed along the circumference of the support rod. A rotating rod is coaxially inserted in the support rod, and the rotating rod can rotate in the support rod. A plurality of mounting blocks are hinged on the side wall of the rotating rod, and the plurality of mounting blocks correspond to the mounting holes one by one, and the end of the mounting block away from the rotating rod can extend out of the mounting hole.

[0012] By adopting the above technical solution, in the initial state, the mounting block is stored in the support rod, and the end of the mounting block away from the rotating rod is located in the corresponding mounting hole. When the bottom of the support rod is inserted into the ground, the mounting rod is rotated to change the position of the connection between the mounting block and the rotating rod, and at the same time, the mounting block is also restricted by the mounting hole, so that the distance from the connection between the mounting block and the rotating rod to the corresponding mounting hole changes, so that the mounting block rotates on the rotating rod, and at the same time, the mounting block extends out of the mounting hole along the trajectory of the mounting hole and is inserted into the soil. The fixed block is inserted into the soil in a vertical direction, and the mounting block is inserted into the soil in a horizontal direction, so that the support rod can cooperate with the soil to obtain all-round restrictions, further increasing the stability of the support rod inserted into the ground.

[0013] Optionally, an adjusting rod is passed through the support rod, and the adjusting rod is rotatably connected to the support rod. A transmission bevel gear is coaxially fixed to one end of the adjusting rod located inside the support rod, and a rotating bevel gear is coaxially fixed to the top of the rotating rod, and the transmission bevel gear is meshed with the rotating bevel gear.

[0014] By adopting the above technical solution, when the bottom of the support rod is inserted into the ground, the adjusting rod is located above the ground, and then the adjusting rod is driven to rotate, so that the transmission bevel gear drives the rotating bevel gear to rotate, thereby causing the rotating rod to rotate, thereby facilitating driving the mounting block to extend out of the mounting hole.

[0015] Optionally, a handle is fixed on one end of the adjusting rod extending out of the supporting rod.

[0016] By adopting the above technical solution, the handle provides a force-bearing part for the hand, which is convenient for the operator to operate the rotating adjustment lever, and the operation is convenient, saving time and effort.

[0017] Optionally, a support plate is fixed on the side wall of the support rod, the support plate is located below the adjustment rod, and the support plate can abut against the ground.

[0018] By adopting the above technical solution, when the bottom of the support rod is inserted into the ground until the support plate abuts against the ground, the support plate plays a limiting role, and the beam plate is installed on the support rod, so that the support rod will not sink due to the gravity of the beam plate. At the same time, it also ensures that the adjusting rod is always above the ground to facilitate the rotation of the adjusting rod and control the contraction of the mounting block.

[0019] Optionally, a fixed gear is coaxially sleeved on the adjusting rod, the fixed gear is fixed to the adjusting rod, a fixed rack is slidably connected to the support rod, the fixed rack is located above the fixed gear, and the fixed rack can mesh with the fixed gear.

[0020] By adopting the above technical solution, when the state of the mounting block needs to be adjusted, the fixed rack is first moved upward to separate the fixed rack from the fixed gear, and then the adjusting rod is directly rotated to rotate the rotating rod through the meshing transmission of the transmission bevel gear and the rotating bevel gear, thereby driving the mounting block to be inserted into the soil, and then the force to lift the fixed rack is removed, so that the fixed rack naturally moves down to mesh with the fixed gear under the action of gravity. At this time, the side wall of the teeth on the fixed rack abuts against the side wall of the teeth on the fixed gear, limiting the rotation of the fixed gear, thereby preventing the adjusting rod from rotating, thereby increasing the stability of the mounting block inserted in the soil.

[0021] Optionally, a sliding block is fixed on the fixed rack, a sliding groove is provided on the support rod along the vertical direction, and the sliding block is inserted in the sliding groove and can move in the sliding groove.

[0022] By adopting the above technical solution, when the fixed rack is meshed with the fixed gear, the fixed gear will apply a thrust for horizontal movement to the fixed rack if it rotates, and the slider is in the slide groove, and the inner wall of the slide groove restricts the slider, making it impossible for the fixed rack to move horizontally, thereby increasing the stability of the fixed gear fixed to the support rod, thereby ensuring that the mounting block will not move.

[0023] In summary, the present application includes at least one of the following beneficial effects:

[0024] 1. When using, first insert the bottom ends of the two support rods into the ground until the fixed block is completely buried in the ground, then compact the ground. At this time, the soil and gravel in the ground fill the area around the fixed block and the support rods. Then use the jack to push the beam upward. The pressure of the jack changes, thereby achieving the bearing capacity test of the beam to be tested. While the jack is pushing the beam upward, the soil and gravel on the top of the fixed block restricts the fixed block from moving upward, making it difficult for the support rod to move upward, thereby improving the accuracy of the test results.

[0025] 2. When the support rod is inserted into the ground, it drives the fixed block to move, so that the bottom end of the fixed block pushes the soil first. In the process of the fixed block going deep into the ground, the guide surface contacts the soil, plays a guiding role, and drives the soil to gradually spread, which makes it easier for the fixed block to push the soil away. After the fixed block is completely underground, the soil is compacted to realize the installation of the fixed block underground, which is convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of a bearing capacity reaction frame and a testing system for an anchoring foundation pit according to an embodiment of the present application;

[0027] Figure 2 It is a structural cross-sectional view of the support rod;

[0028] Figure 3 It is a structural cross-sectional view of the connection relationship between the rotating rod and the supporting rod.

[0029] In the figure: 10, support rod; 11, limit block; 12, fixed block; 121, guide surface; 13, mounting hole; 14, slide groove; 20, jack; 30, beam plate; 40, rotating rod; 41, mounting block; 42, rotating bevel gear; 50, adjusting rod; 51, transmission bevel gear; 52, handle; 60, support plate; 70, fixed rack; 71, slider; 80, fixed gear. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-3 This application is described in further detail.

[0031] The present application embodiment discloses a bearing capacity reaction frame and a testing system for an anchoring foundation pit. Figure 1 and Figure 2 The bearing capacity reaction frame and test system for anchoring foundation pit includes a jack 20 and two vertically arranged support rods 10. The jack 20 is placed on the ground, and a beam plate 30 is placed on the jack 20. The support rods 10 are relatively arranged on both sides of the jack 20. Both support rods 10 penetrate the beam plate 30, and the bottom ends of the support rods 10 are embedded in the ground. A limit block 11 is sleeved on the top of the support rod 10, and the limit block 11 is fixed to the support rod 10, and the top wall of the beam plate 30 can abut against the limit block 11.

[0032] When in use, first pass the beam 30 through the bottom end of the support rod 10 and install it on the support rod 10, then insert the bottom ends of the two support rods 10 into the ground and fix them, and then use the jack 20 to push the beam 30 upwards, and the beam 30 is restricted by the limit block 11 and cannot move upwards, so that the jack 20 is subjected to a downward reaction force, and then observe the pressure change of the jack 20, so as to realize the bearing capacity test of the beam 30 at the tested position.

[0033] Reference Figure 1 and Figure 2 In order to increase the stability of the support rod 10 when installed on the ground, a plurality of fixing blocks 12 are fixed on the side wall of the support rod 10. The fixing blocks 12 are located at the bottom of the support rod 10 and are evenly distributed along the circumference of the support rod 10. A guide surface 121 is provided on the side of the fixing block 12 away from the support rod 10, and the bottom end of the guide surface 121 is inclined toward the direction close to the support rod 10.

[0034] When the bottom of the support rod 10 is inserted into the ground, the fixed block 12 is driven to move, so that the bottom end of the fixed block 12 first pushes the soil. In the process of the fixed block 12 penetrating into the ground, the guide surface 121 contacts the soil, plays a guiding role, and drives the soil to gradually spread, that is, the fixed block 12 pushes the soil away. After the fixed block 12 is completely submerged in the ground, the soil is compacted. At this time, the underground soil and gravel fill the area around the fixed block 12 and the support rod 10, so that in the process of the jack 20 pushing the beam 30, the soil and gravel on the top of the fixed block 12 restrict the fixed block 12 from moving up, thereby making it difficult for the support rod 10 to move up, that is, the beam 30 is not easy to push the limit block 11 to drive the entire support rod 10 to move in the direction away from the jack 20, so that the jack 20 can be subjected to the corresponding reaction force, thereby improving the accuracy of the test results.

[0035] Reference Figure 2 and Figure 3In order to further increase the stability of the support rod 10 when inserted into the ground, a plurality of mounting holes 13 are opened on the side wall of the support rod 10, and the plurality of mounting holes 13 are evenly distributed along the circumference of the support rod 10. A rotating rod 40 is coaxially inserted in the support rod 10, and the rotating rod 40 can rotate in the support rod 10. A plurality of mounting blocks 41 are hinged on the side wall of the rotating rod 40, and the plurality of mounting blocks 41 correspond to the mounting holes 13 one by one, wherein the mounting block 41 is in a serrated shape with a sharp tip, and the sharp tip of the mounting block 41 passes through the mounting hole 13, so as to facilitate the insertion of the mounting block 41 into the soil.

[0036] In the initial state, the mounting block 41 is received in the support rod 10, and the end of the mounting block 41 away from the rotating rod 40 is located in the corresponding mounting hole 13. When the bottom of the support rod 10 is inserted into the ground, the mounting rod is rotated to change the position of the connection between the mounting block 41 and the rotating rod 40. At the same time, the mounting block 41 is also restricted by the mounting hole 13, so that the distance from the connection between the mounting block 41 and the rotating rod 40 to the corresponding mounting hole 13 changes, so that the mounting block 41 rotates on the rotating rod 40, and at the same time, the mounting block 41 extends out of the mounting hole 13 along the trajectory of the mounting hole 13 and is inserted into the soil. The fixing block 12 is inserted into the soil in a vertical direction, and the mounting block 41 is inserted into the soil in a horizontal direction, so that the support rod 10 can cooperate with the soil to obtain all-round restrictions, further increasing the stability of the support rod 10 inserted into the ground.

[0037] Reference Figure 1 and Figure 2 In order to facilitate the driving of the adjusting rod 50 to rotate, a transmission bevel gear 51 is coaxially sleeved on the adjusting rod 50, and the transmission bevel gear 51 is fixed to the adjusting rod 50 and is located in the support rod 10. A handle 52 is coaxially sleeved on the end of the adjusting rod 50 extending out of the support rod 10, and the handle 52 is fixed to the adjusting rod 50. A rotating bevel gear 42 is coaxially fixed to the top of the rotating rod 40, and the transmission bevel gear 51 meshes with the rotating bevel gear 42.

[0038] A support plate 60 is provided below the adjustment rod 50 . The support plate 60 is fixed to the support rod 10 , and the support plate 60 can abut against the ground.

[0039] When the bottom of the support rod 10 is inserted into the ground until the support plate 60 abuts against the ground, the adjusting rod 50 is located above the ground. Then, force is directly applied to the handle 52 to drive the adjusting rod 50 to rotate, so that the transmission bevel gear 51 drives the rotating bevel gear 42 to rotate, thereby causing the rotating rod 40 to rotate, thereby driving the mounting block 41 to extend out of the mounting hole 13.

[0040] Reference Figure 1 and Figure 2In order to improve the stability of the mounting block 41, a fixed gear 80 is coaxially sleeved on the adjusting rod 50, and the fixed gear 80 is fixed to the adjusting rod 50. A slide groove 14 is opened on the support rod 10 in the vertical direction, and a slider 71 is inserted in the slide groove 14. The slider 71 can move in the slide groove 14. The slider 71 is fixed with a fixed rack 70. The fixed rack 70 is located above the fixed gear 80, and the fixed rack 70 can mesh with the fixed gear 80.

[0041] When the state of the mounting block 41 needs to be adjusted, the fixed rack 70 is first moved upward to separate the fixed rack 70 from the fixed gear 80, and then the adjusting rod 50 is directly rotated to mesh the transmission bevel gear 51 and the rotating bevel gear 42, so that the rotating rod 40 rotates, thereby driving the mounting block 41 to be inserted into the soil, and then the force to lift the fixed rack 70 is removed, so that the fixed rack 70 naturally moves down to mesh with the fixed gear 80 under the action of gravity. At this time, the side walls of the teeth on the fixed rack 70 abut against the side walls of the teeth on the fixed gear 80, and the slide groove 14 limits the slider 71, so that the fixed rack 70 cannot move horizontally, thereby limiting the rotation of the fixed gear 80, so that the adjusting rod 50 cannot rotate, thereby increasing the stability of the mounting block 41 inserted in the soil.

[0042] The implementation principle of the bearing capacity reaction frame and test system for anchoring foundation pits in the embodiment of the present application is as follows: when in use, first insert the bottom ends of the two support rods 10 into the ground until the fixed block 12 is completely submerged in the ground, and then compact the ground. At this time, the soil and gravel in the ground fill the surroundings of the fixed block 12 and the support rod 10, and then use the jack 20 to push the beam 30 upward, and the beam 30 is restricted by the limit block 11 and cannot move upward, so that the jack 20 is subjected to a downward reaction force, and then observe the pressure change of the jack 20, so as to realize the bearing capacity test of the position to be tested of the beam 30. In the process of the jack 20 pushing the beam 30, the soil and gravel on the top of the fixed block 12 restricts the fixed block 12 from moving upward, so that the support rod 10 is not easy to move upward, that is, the beam 30 is not easy to push the limit block 11 to drive the entire support rod 10 to move away from the jack 20, so that the jack 20 can be subjected to the corresponding reaction force, thereby improving the accuracy of the test results.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A bearing capacity reaction frame and test system for anchoring foundation pit, characterized in that: The invention comprises a jack (20) and two vertically arranged support rods (10), wherein the support rods (10) are arranged opposite to each other, a beam plate (30) is sleeved on the support rod (10), and the beam plate (30) can move on the support rod (10) in a vertical direction, the jack (20) is located between the two support rods (10), the top end of the jack (20) abuts against the bottom wall of the beam plate (30), a limiting block (11) is fixed on the top of the support rod (10), the top wall of the beam plate (30) abuts against the limiting block (11), and a plurality of fixing blocks (12) are fixed on the side wall of the support rod (10), and the fixing block (12) is located at the bottom of the support rod (10).

2. The bearing capacity reaction frame and testing system for anchoring foundation pit according to claim 1, characterized in that: A guide surface (121) is provided on the side wall of the fixing block (12), and the bottom end of the guide surface (121) is inclined in a direction close to the central axis of the support rod (10).

3. The bearing capacity reaction frame and testing system for anchoring foundation pit according to claim 1, characterized in that: A plurality of mounting holes (13) are provided on the side wall of the support rod (10), and the plurality of mounting holes (13) are evenly arranged along the circumference of the support rod (10). A rotating rod (40) is coaxially inserted in the support rod (10), and the rotating rod (40) can rotate in the support rod (10). A plurality of mounting blocks (41) are hinged on the side wall of the rotating rod (40), and the plurality of mounting blocks (41) correspond to the mounting holes (13) one by one, and one end of the mounting block (41) away from the rotating rod (40) can extend out of the mounting hole (13).

4. The bearing capacity reaction frame and testing system for anchoring foundation pit according to claim 3, characterized in that: An adjusting rod (50) is provided on the support rod (10), and the adjusting rod (50) is rotatably connected to the support rod (10); a transmission bevel gear (51) is coaxially fixed to one end of the adjusting rod (50) located inside the support rod (10); a rotating bevel gear (42) is coaxially fixed to the top end of the rotating rod (40); and the transmission bevel gear (51) is meshed with the rotating bevel gear (42).

5. The bearing capacity reaction frame and testing system for anchoring foundation pit according to claim 4, characterized in that: A handle (52) is fixed on one end of the adjusting rod (50) extending out of the supporting rod (10).

6. The bearing capacity reaction frame and testing system for anchoring foundation pit according to claim 3, characterized in that: A support plate (60) is fixed on the side wall of the support rod (10); the support plate (60) is located below the adjustment rod (50), and the support plate (60) can abut against the ground.

7. The bearing capacity reaction frame and testing system for anchoring foundation pit according to claim 4, characterized in that: A fixed gear (80) is coaxially sleeved on the adjusting rod (50), and the fixed gear (80) is fixed to the adjusting rod (50). A fixed rack (70) is slidably connected to the support rod (10), and the fixed rack (70) is located above the fixed gear (80), and the fixed rack (70) can mesh with the fixed gear (80).

8. The bearing capacity reaction frame and testing system for anchoring foundation pit according to claim 7, characterized in that: A sliding block (71) is fixed on the fixed rack (70), a sliding groove (14) is provided on the support rod (10) in a vertical direction, and the sliding block (71) is inserted in the sliding groove (14) and can move in the sliding groove (14).

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