Embedded load box for pile foundation bearing capacity test
By adopting a clamp ring structure that can be reinforced in both directions in the pile foundation bearing capacity test, the problem of the jack pile foundation tilting when entering the load box is solved, and high-precision detection of the vertical bearing capacity of the pile foundation is achieved.
Patent Information
- Application Number
- CN202422682998.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-05
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-11-05
AI Technical Summary
In existing pile foundation bearing capacity tests, an impact force is generated when the jack pile foundation enters the load box, causing the load box to tilt and the steel bars to be non-perpendicular to the load box, resulting in large errors in the test data and affecting the detection accuracy.
A pre-buried load box is designed, which adopts a clamping ring structure with bidirectional reinforcement. The clamping ring is used to reinforce the jack pile foundation so that it remains vertical during the test. The combined structure of the mounting rod, support plate, rotating rod and bevel gear is used to achieve stable installation of the jack pile foundation.
The installation accuracy of the jack pile foundation is improved, the detection accuracy of the vertical bearing capacity of the pile foundation is enhanced, and the test error is reduced.
Smart Images
Figure CN223386695U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pile foundation bearing capacity testing, in particular to a pre-buried load box for pile foundation bearing capacity testing. Background Art
[0002] A pre-embedded load box is a device used during pile foundation construction. Pre-designed steel plates, formwork, rebar, and other materials are formed through a single concrete pour and then fixed into the concrete before other components are formed. Its primary function is to serve as a loading device for pile foundation bearing capacity testing. By applying equal upward and downward hydraulic forces, it simulates the stresses experienced in actual use, thereby testing the pile foundation's bearing capacity.
[0003] During the test, the jack pile foundation to be tested is usually placed into the load box first. However, when the jack pile foundation enters, it will generate an impact force on the load box, causing the load box to tilt, resulting in the steel bar and the load box not being perpendicular. This leads to large errors in the load box test data and affects the accuracy of the detection of the vertical bearing capacity of the pile foundation. Utility Model Content
[0004] The purpose of the utility model is to solve the problem in the prior art that it is inconvenient to reinforce steel bars, which causes errors in subsequent tests and reduces detection accuracy, and to propose a pre-buried load box for pile foundation bearing capacity testing.
[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:
[0006] A pre-embedded load box for pile foundation bearing capacity testing comprises a pre-embedded load box body, a mounting rod is installed on the top surface of the pre-embedded load box body, a pillar is fixed on the top of the mounting rod, and two groups of pillars are symmetrically provided, a first support plate is fixed on the top of one group of pillars, and a second support plate is fixed on the top of the other group of pillars, a support is fixedly connected between the second support plate and the pre-embedded load box body, a first rotating rod is rotatably connected to the middle of the first support plate, and a second rotating rod is rotatably connected to the middle of the second support plate, and a jack pile foundation is placed in the middle of the pre-embedded load box body.
[0007] Preferably, four mounting rods are provided, and the four mounting rods are symmetrically distributed on the top surface of the embedded load box body.
[0008] Preferably, two first support plates are symmetrically provided with respect to the embedded load box body, and the first rotating rod rotates between the two first support plates.
[0009] Preferably, a rocker is fixedly connected to the end of the first rotating rod, a first double-headed screw is sleeved on the first rotating rod, and a first clamping ring is sleeved on the outer symmetrical thread of the first double-headed screw.
[0010] Preferably, two second support plates are symmetrically provided with respect to the embedded load box body, and the second rotating rod rotates between the two second support plates.
[0011] Preferably, a first bevel gear is fixedly sleeved on the outside of the first rotating rod, a second bevel gear is fixedly sleeved on the second rotating rod, the first bevel gear and the second bevel gear are engaged with each other, a second double-headed screw is fixedly sleeved on the second rotating rod, an L-shaped bracket is symmetrically threaded on the second double-headed screw, an L-shaped mounting bracket is fixed on the top of the L-shaped bracket, and a second clamping ring is fixed on the side wall of the L-shaped mounting bracket.
[0012] Compared with the prior art, the present invention has the following advantages:
[0013] 1. The utility model is provided with a clamping ring that can be reinforced in both directions. The clamping ring is used to reinforce the jack pile foundation, so that the jack pile foundation is in a vertical state during the load box test, further improving the installation accuracy of the jack pile foundation and the detection accuracy of the vertical bearing capacity of the pile foundation. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a structural schematic diagram of a pre-buried load box for pile foundation bearing capacity testing proposed by the present invention;
[0015] Figure 2 This utility model proposes a pre-buried load box for pile foundation bearing capacity test Figure 1 Schematic diagram of the embedded load box and jack pile foundation installation structure;
[0016] Figure 3 This is a schematic diagram of the connection structure of the first clamping ring, the second clamping ring, the first rotating rod, the second rotating rod and other components of the embedded load box for pile foundation bearing capacity testing proposed by the utility model.
[0017] In the picture:
[0018] 1. Embed the load box body;
[0019] 2. Install the rod;
[0020] 3. Pillar;
[0021] 4. First support plate;
[0022] 5. Second support plate;
[0023] 6. Support;
[0024] 7. First rotating rod; 71. Rocker; 72. First double-start screw; 73. First clamping ring; 74. First bevel gear; 75. Second bevel gear;
[0025] 8. Second rotating rod; 81. Second double-ended screw; 82. L-shaped bracket; 83. L-shaped mounting bracket; 84. Second clamping ring;
[0026] 9. Jack pile foundation. DETAILED DESCRIPTION
[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0028] Reference Figure 1-Figure 3 A pre-buried load box for pile foundation bearing capacity test includes a pre-buried load box body 1, a mounting rod 2 is installed on the top surface of the pre-buried load box body 1, a pillar 3 is fixed on the top of the mounting rod 2, and two groups of pillars 3 are symmetrically provided. A first support plate 4 is fixed on the top of one group of pillars 3, and a second support plate 5 is fixed on the top of the other group of pillars 3. A support 6 is fixedly connected between the second support plate 5 and the pre-buried load box body 1, a first rotating rod 7 is rotatably connected to the middle of the first support plate 4, and a second rotating rod 8 is rotatably connected to the middle of the second support plate 5. A jack pile foundation 9 is placed in the middle of the pre-buried load box body 1.
[0029] In this embodiment, Figure 1 、 Figure 2 and Figure 3 As shown, four mounting rods 2 are provided, and the four mounting rods 2 are symmetrically distributed on the top surface of the embedded load box body 1. The mounting rods 2 serve as a medium for connecting and supporting the upper structure, mainly providing a stable support point to ensure that the remaining reinforcement components can be firmly installed on the embedded load box.
[0030] In this embodiment, Figure 1 、 Figure 2 and Figure 3 As shown, two first support plates 4 are symmetrically provided about the embedded load box body 1 , and the first rotating rod 7 rotates between the two first support plates 4 . The first rotating rod 7 and the second rotating rod 8 are used to adjust or control the positions of the first clamping ring 73 and the second clamping ring 84 .
[0031] In this embodiment, Figure 1 、 Figure 2 and Figure 3 As shown, a rocker 71 is fixedly connected to the end of the first rotating rod 7 , a first double-headed screw 72 is sleeved on the first rotating rod 7 , and a first clamping ring 73 is sleeved on the outer symmetrical thread of the first double-headed screw 72 .
[0032] In this embodiment, Figure 1 、 Figure 2 and Figure 3As shown, two second support plates 5 are symmetrically provided with respect to the embedded load box body 1 , and the second rotating rod 8 rotates between the two second support plates 5 .
[0033] In this embodiment, Figure 1 、 Figure 2 and Figure 3 As shown, the outside of the first rotating rod 7 is fixedly sleeved with a first bevel gear 74, the second rotating rod 8 is fixedly sleeved with a second bevel gear 75, the first bevel gear 74 and the second bevel gear 75 are engaged with each other, the second rotating rod 8 is fixedly sleeved with a second double-headed screw 81, the second double-headed screw 81 is symmetrically threaded with an L-shaped bracket 82, the top of the L-shaped bracket 82 is fixed with an L-shaped mounting bracket 83, and the side wall of the L-shaped mounting bracket 83 is fixed with a second clamping ring 84.
[0034] The functional principle of this utility model can be explained through the following operation modes:
[0035] When the embedded load box is used to test the pile foundation, the jack pile foundation 9 is sent into the embedded load box body 1 by an external crane, and the rocker 71 is manually rotated to drive the first rotating rod 7 to rotate in the first support plate 4. When the first rotating rod 7 rotates, the first double-headed screw 72 on its outside rotates accordingly, and the symmetrical first clamping ring 73 on its outside slides horizontally inward or outward at the same time, so that the first clamping ring 73 fits on both sides of the jack pile foundation 9 to tighten and clamp it.
[0036] As the first rotating rod 7 rotates, the first bevel gear 74 on its outside rotates and meshes with the second bevel gear 75. The second rotating rod 8 rotates at the same time through the meshing transmission of the bevel gears, and the second double-headed screw 81 on its outside also rotates, so that the L-shaped bracket 82 and the second clamping ring 84 on its outside simultaneously fit toward the other two ends of the jack pile foundation 9, thereby reinforcing the jack pile foundation 9 and making the jack pile foundation 9 in a vertical state during the load box test, further improving the installation accuracy of the jack pile foundation 9 and improving the detection accuracy of the vertical bearing capacity of the pile foundation.
[0037] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A pre-buried load box for pile foundation bearing capacity test, comprising a pre-buried load box body (1), characterized in that: The top surface of the embedded load box body (1) is installed with a mounting rod (2), and a pillar (3) is fixed on the top of the mounting rod (2). The pillars (3) are symmetrically provided with two groups, and a first support plate (4) is fixed on the top of one group of pillars (3), and a second support plate (5) is fixed on the top of the other group of pillars (3). A support (6) is fixedly connected between the second support plate (5) and the embedded load box body (1). The middle of the first support plate (4) is rotatably connected to a first rotating rod (7), and the middle of the second support plate (5) is rotatably connected to a second rotating rod (8). A jack pile foundation (9) is placed in the middle of the embedded load box body (1).
2. The embedded load box for pile foundation bearing capacity test according to claim 1, characterized in that: Four mounting rods (2) are provided, and the four mounting rods (2) are symmetrically distributed on the top surface of the embedded load box body (1).
3. The embedded load box for pile foundation bearing capacity test according to claim 1, characterized in that: Two first support plates (4) are symmetrically provided with respect to the embedded load box body (1), and the first rotating rod (7) rotates between the two first support plates (4).
4. The embedded load box for pile foundation bearing capacity test according to claim 1, characterized in that: The end of the first rotating rod (7) is fixedly connected to a rocker (71), a first double-headed screw (72) is sleeved on the first rotating rod (7), and a first clamping ring (73) is sleeved on the outer symmetrical thread of the first double-headed screw (72).
5. The embedded load box for pile foundation bearing capacity test according to claim 1, characterized in that: Two second support plates (5) are symmetrically provided with respect to the embedded load box body (1), and the second rotating rod (8) rotates between the two second support plates (5).
6. The embedded load box for pile foundation bearing capacity test according to claim 4, characterized in that: A first bevel gear (74) is fixedly sleeved on the outside of the first rotating rod (7), a second bevel gear (75) is fixedly sleeved on the second rotating rod (8), the first bevel gear (74) and the second bevel gear (75) are meshed with each other, a second double-headed screw (81) is fixedly sleeved on the second rotating rod (8), an L-shaped bracket (82) is symmetrically threadedly sleeved on the second double-headed screw (81), an L-shaped mounting bracket (83) is fixed on the top of the L-shaped bracket (82), and a second clamping ring (84) is fixed on the side wall of the L-shaped mounting bracket (83).