Static load detection device and static load detection system

Abstract

The present invention discloses a static load detection device and a static load detection system, which belong to the field of building construction technology. The static load detection device of the present invention is used in pile foundation static load detection, and includes: a platform; a load component, the load component is connected to the platform; a loading assembly, the loading assembly is arranged on the platform, the loading assembly is connected to the load component; at least one pair of balancing components, a pair of balancing components are respectively arranged on both sides of the platform, one end of the balancing component is connected to the platform, and the other end is used to be installed on the bearing surface, and the balancing component is in surface contact with the bearing surface. The static load detection device of the present invention can avoid the problem of deflection or collapse caused by unbalanced load loading points during the detection process.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and in particular to a static load detection device and a static load detection system. Background Art

[0002] Pile foundation static load testing technology has developed as pile foundations are increasingly used in architectural design. Among them, the most commonly used static load test is the counterweight loading method, which gradually adds counterweights to the pile foundation to be tested and tests the displacement of the pile foundation under different pressures. The counterweight loading method is relatively simple and effective. However, the counterweight loading method is difficult to control the overall balance point and the loading center by gradually adding counterweights. When the counterweights are loaded too much, the overall eccentricity of the counterweight loading is large, which can easily cause a corner or side of the loading platform to be suspended. Therefore, the counterweight loading method often cannot load to the maximum load required by the test. Moreover, if the phenomenon of a corner or side of the loading platform being suspended is not discovered in time during operation, it will cause serious landslides when the counterweights are loaded too much. Summary of the Invention

[0003] In order to address the deficiencies of the prior art, an embodiment of the present invention provides a static load detection device that can ensure that the overall balance point remains unchanged when the pressure loaded on the pile increases.

[0004] In a first aspect, an embodiment of the present invention provides a static load detection device for use in pile foundation static load detection, comprising:

[0005] platform;

[0006] a load component connected to the platform;

[0007] A loading component, the loading component is disposed on the platform and connected to the load component;

[0008] At least one pair of balancing components, wherein the pair of balancing components are respectively arranged on both sides of the platform, one end of the balancing component is connected to the platform, and the other end is used to be installed on the bearing surface, and the balancing component is in surface contact with the bearing surface.

[0009] Optionally, the load component includes a reaction pile, and a through hole is provided on the platform, and the reaction pile passes through the through hole.

[0010] Optionally, the loading assembly includes a first driving component, the first driving component is connected to the reaction pile, and the first driving component provides a driving force for the reaction pile to move.

[0011] Optionally, the loading component further includes:

[0012] A clamping plate, the clamping plate being arranged around the reaction pile;

[0013] A second driving component is connected to the clamping plate, and the second driving component drives the clamping plate to clamp the reaction pile.

[0014] Optionally, the loading assembly further includes a weight block, one end of which is disposed on the platform, and the other end of which is connected to the first driving component, and the clamping plate is connected to the weight block.

[0015] Optionally, a pressure sensor is connected to the end of the load component.

[0016] Optionally, the balancing components include two pairs, one pair of the balancing components is arranged on the left and right sides of the platform, and the other pair of the balancing components is arranged on the front and back sides of the platform.

[0017] Optionally, a walking mechanism is further included, and the walking mechanism includes:

[0018] a third driving component, the third driving component being connected to the balancing component, and the third driving component driving the balancing component to move closer to or away from the platform;

[0019] A fourth driving component is connected to the balancing component, and the fourth driving component drives the balancing component to perform linear motion on a plane parallel to the platform.

[0020] In a second aspect, an embodiment of the present invention further provides a static load detection system, comprising the static load detection device as described above, and further comprising a pile foundation to be tested, wherein the load component is loaded on the pile foundation to be tested.

[0021] Optionally, a jack is provided between the load component and the pile foundation to be measured, a steel plate is provided between the jack and the pile foundation to be measured, and the surface area of ​​the steel plate is larger than the cross-sectional area of ​​the jack and the pile foundation to be measured.

[0022] Beneficial effects of the present invention:

[0023] An embodiment of the present invention provides a static load detection device, comprising: a platform; a load component, the load component being connected to the platform; a loading assembly, the loading assembly being arranged on the platform, the loading assembly being connected to the load component; and at least one pair of balancing components, a pair of balancing components being arranged on both sides of the platform, one end of the balancing component being connected to the platform, and the other end being used to be installed on a bearing surface, the balancing component being in surface contact with the bearing surface. The static load detection device of the embodiment of the present invention provides an initial load for the pile foundation to be tested through the load component, and increases or decreases the load acting on the pile foundation to be tested by the load component through the loading assembly. When the load acting on the pile foundation to be tested is eccentric, the unbalanced force is transmitted to the platform, causing the platform to deflect. The platform is supported by at least one pair of balancing components to resist the deflection of the platform, thereby ensuring the overall balance. The balancing components are in surface contact with the bearing surface. Therefore, only one pair of balancing components is needed to ensure the overall balance of the static load detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The advantages of the above and / or additional aspects of the present invention will become apparent and readily understood from the description of the embodiments with reference to the following drawings, in which:

[0025] Figure 1 1 is a schematic structural diagram of a pile foundation to be tested according to an embodiment of the present invention;

[0026] Figure 2 is a schematic structural diagram of a static load detection device according to an embodiment of the present invention;

[0027] Figure 3 2 is a schematic structural diagram of a static load detection system according to an embodiment of the present invention.

[0028] in Figures 1 to 3 The corresponding relationship between the reference numerals and component names is as follows:

[0029] 1. Pile foundation to be tested; 2. Load component; 3. Platform; 4. Balance component; 50. First drive component; 51. Clamping plate; 52. Second drive component; 53. Balancing block; 6. Pressure sensor; 7. Jack; 8. Steel plate; 9. Third drive component; 10. Displacement sensor; 11. Displacement meter; 12. Reference pile; 13. Reference beam; 30. Through hole. DETAILED DESCRIPTION

[0030] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0031] The static load detection device of the embodiment of the present invention is applied to pile foundation static load detection. Figure 1The pile foundation 1 is set in the foundation pit with the top of the pile foundation 1 exposed. During the static load test, a load is applied to the top of the pile foundation 1. Within a certain load range, the displacement of the pile foundation 1 in the foundation pit is tested to characterize the stability of the pile foundation 1. Currently, the load on the pile foundation 1 is generally applied by setting a loading platform on the pile foundation 1 and gradually adding counterweights on the loading platform to gradually increase the load. During the static load test, the balance point of the counterweights is difficult to control. When there are a large number of counterweights, the load eccentricity is amplified, and in severe cases, it may even cause serious landslides.

[0032] In order to solve the problem of difficult control of balance point during pile foundation static load detection, such as Figure 2 and Figure 3 An embodiment of the present invention provides a static load detection device, including a load component 2, a loading assembly, a platform 3 and at least one pair of balancing components 4.

[0033] The load component 2 itself has a certain load, and the load component 2 can act on the pile foundation 1 to be tested to generate an initial load.

[0034] The loading component is connected to the load component 2. During the static load test of the pile foundation 1 to be tested, the loading component is used to increase or decrease the load acting on the pile foundation 1 to be tested, so as to detect the displacement of the pile foundation 1 to be tested under different loads.

[0035] The platform 3, the loading assembly and the load component 2 act as a whole that moves together. The load component 2 acts on the pile foundation 1 to be measured. When the position of the load component 2 relative to the pile foundation 1 to be measured is eccentric, if the eccentricity is sufficient to cause the load component 2 to deflect relative to the pile foundation 1 to be measured, the loading assembly and the platform 3 connected to the load component 2 will also deflect. Therefore, in the embodiment of the present invention, the movement of the load component 2 caused by the instability of the balance point of the load component 2 relative to the pile foundation 1 to be measured is converted into the movement of the platform 3. By limiting the movement of the platform 3, the control of the balance point between the load component 2 and the pile foundation 1 to be measured can be achieved.

[0036] In this embodiment of the present invention, the balance of the platform 3 is controlled by at least one pair of balancing components 4, thereby controlling the balance point between the load component 2 and the pile foundation 1 to be tested. The pair of balancing components 4 are disposed on either side of the platform 3, with one end of each balancing component 4 connected to the platform 3 and the other end of each balancing component 4 mounted on a bearing surface, with the balancing components 4 in surface contact with the bearing surface. The bearing surface can be the ground or another supporting surface used for static load testing of the pile foundation 1 to be tested, such as an additional supporting platform.

[0037] In one embodiment, a pair of balancing components 4 are provided, one on each side of the platform 3. The pair of balancing components 4 acts on the platform 3 to maintain the platform 3 in a predetermined equilibrium state, regardless of any deviation from the equilibrium point between the load component 2 and the pile foundation 1 to be tested, thereby ensuring that the load component 2 and the pile foundation 1 to be tested always maintain a balanced state. For example, when the eccentricity between the load component 2 and the pile foundation 1 to be tested causes the load component 2 to deflect toward any side corresponding to the pair of balancing components 4, the platform 3 deflects toward that side accordingly. Obviously, under the action of the balancing components 4, the platform 3 maintains a balanced state, resists the occurrence of the deflection, and thereby maintains a balanced state between the load component 2 and the pile foundation 1 to be tested; in addition, if the eccentricity between the load component 2 and the pile foundation 1 to be tested causes the load component 2 to deflect toward a side staggered with the pair of balancing components 4, at this time, since the balancing component 4 is in surface contact with the bearing surface, it has the ability to resist the deflection of the platform 3 toward other directions. Therefore, only a pair of balancing components 4 is needed to ensure the balance of the platform 3, thereby ensuring that during the static load test, the load component 2 and the pile foundation 1 to be tested always maintain a balanced state.

[0038] In an alternative embodiment, the balancing components 4 may be selected to include two pairs, one pair of balancing components 4 being respectively arranged on the left and right sides of the platform 3 , and the other pair of balancing components 4 being respectively arranged on the front and rear sides of the platform 3 .

[0039] Of course, those skilled in the art may make some simple changes to the number and arrangement of the balancing components 4, for example, selecting the number of balancing components 4 to be 3, so that the 3 balancing components 4 are arranged in a triangular structure below the platform 3, or increasing the number of balancing components 4 to increase the support points. It should be understood that these changes can be obtained through simple and direct changes to the technical solutions of the embodiments of the present invention and should fall within the scope of protection of the present invention.

[0040] It should be noted that in the existing solution of stacking counterweights on a platform, the platform acts as a force transmission medium to transmit the load to the pile foundation 1 to be tested. In contrast, in the embodiment of the present invention, the platform 3 does not serve as a load transmission medium. The load acts on the pile foundation 1 to be tested through the load component 2. The function of the platform 3 is: when the load component 2 and the pile foundation 1 to be tested may deflect due to imbalance, the balance component 4 is used to maintain the balance of the platform 3, thereby maintaining the balance of the load component 2 and the pile foundation 1 to be tested.

[0041] In an optional embodiment, the load component 2 can be selected as a reaction pile, such as Figure 2 During the static load test of the pile foundation 1 to be tested, the reaction pile is set vertically, the lower end of the reaction pile is set at the top of the pile foundation 1 to be tested, and a through hole 30 is set on the platform 3, and the reaction pile passes through the through hole 30.

[0042] The loading assembly includes a first driving component 50, which is connected to the reaction pile. In this embodiment, the first driving component 50 provides a driving force for the reaction pile to move toward or away from the pile foundation 1 to be tested. The functions of the first driving component 50 include: driving the reaction pile to move to contact with the pile foundation 1 to be tested before the static load test of the pile foundation 1 to be tested, or driving the reaction pile to move to separate from the pile foundation 1 to be tested after the static load test of the pile foundation 1 to be tested; during the static load test of the pile foundation 1 to be tested, the driving force acts on the reaction pile to increase or decrease the load applied by the reaction pile to the pile foundation 1 to be tested, thereby realizing the detection of the pile foundation 1 to be tested under different loads. In this embodiment, the load applied to the pile foundation 1 to be tested can be continuously adjusted, so the test results are more accurate.

[0043] The loading assembly further includes a clamping plate 51 and a second driving component 52. The clamping plate 51 is disposed around the reaction pile, and the second driving component 52 is connected to the clamping plate 51. The second driving component 52 drives the clamping plate 51 so that the clamping plate 51 clamps the reaction pile.

[0044] In an optional embodiment, the first drive component 50 can be connected to the clamping plate 51. During the static load test, the second drive component 52 drives the clamping plate 51 to clamp and secure the reaction pile. The first drive component 50 drives the reaction pile toward or away from the pile foundation 1 to be tested. The clamping plate 51 can be configured to have a surface that fits the outer surface of the reaction pile, so that the clamping plate 51 and the reaction pile are in surface contact, thereby increasing the stability between the two. In addition, at the platform 3, the inner wall of the through hole 30 can be configured to fit the outer surface of the reaction pile. Therefore, the verticality of the reaction pile is ensured by the combined action of the clamping plate 51 and the through hole 30. If the reaction pile and the pile foundation 1 to be tested have been pre-adjusted for balance, the clamping plate 51 and the through hole 30 can further ensure the balance between the reaction pile and the pile foundation 1 to be tested during the test.

[0045] The loading assembly also includes a ballast 53, one end of which is mounted on the platform 3, the other end of which is connected to the first drive component 50, and the clamping plate 51 is connected to the ballast 53. After the second drive component 52 drives the clamping plate 51 to clamp the reaction pile, the reaction pile, the clamping plate 51, the ballast 52, and the platform 3 form a whole that moves together, wherein the load-bearing point of this whole is the pile foundation 1 to be tested. Therefore, the weight of the ballast 53, as well as the weight of the platform 3, the clamping plate 51, and other components, acts on the pile foundation 1 to be tested, serving as the load applied to the pile foundation 1 to be tested during testing. The first drive component 50 provides driving force, and during static load testing, it continuously increases or decreases the load acting on the pile foundation 1 to be tested.

[0046] The process of static load testing of pile foundation 1 includes:

[0047] Load the reaction pile onto the loading assembly, pass the reaction pile through the through hole 30, and clamp the reaction pile with the clamping plate 51;

[0048] The first driving component 50 works to make the reaction pile contact with the pile foundation 1 to be tested;

[0049] The first driving component 50 continues to work, so that the load applied by the reaction pile on the pile foundation 1 to be tested increases, and the displacement change of the pile foundation 1 to be tested is detected.

[0050] In the embodiment of the present invention, the first driving component 50 can be selected as a cylinder to provide a stable and continuous driving force. Similarly, the second driving component 51 can also be selected as a cylinder.

[0051] In an optional embodiment, a pressure sensor 6 is connected to the end of the load component 2 (reaction pile). The pressure sensor 6 is used to detect the pressure exerted by the load component 2 on the pile foundation 1 to be tested, thereby indicating the load at that time. During the static load test of the pile foundation 1 to be tested, the pressure value exerted by the load component 2 on the pile foundation 1 to be tested is measured in real time by the pressure sensor 6, thereby indicating the magnitude of the load acting on the pile foundation 1 to be tested in real time. The magnitude of the load is correlated with the change in the displacement of the pile foundation 1 to obtain the performance of the pile foundation 1 to be tested.

[0052] like Figure 3 In an optional embodiment, a jack 7 is provided between the load component 2 and the pile foundation 1 to be tested, that is, the load component 2 acts on the jack 7, and the jack 7 transfers the load and acts on the pile foundation 1 to be tested. In this embodiment, the pressure sensor 6 can also be selected to be connected to the jack 7 to obtain the load acting on the pile foundation 1 to be tested by the jack 7 in real time.

[0053] A steel plate 8 is provided between the jack 7 and the pile foundation 1 to be tested. The area of ​​the steel plate 8 is larger than the cross-sectional area of ​​the jack 7 and the pile foundation 1 to be tested. The provision of the steel plate 8 further improves the balance between the load component 2 and the pile foundation 1 to be tested.

[0054] The static load detection device of the embodiment of the present invention further includes a traveling mechanism, which can realize the overall movement of the static load detection device, so that the static load detection device can be conveniently moved to different detection positions, thereby realizing continuous and efficient detection.

[0055] In one embodiment, the walking mechanism includes: a third drive component 9, which is connected to the balancing component 4 and drives the balancing component 4 to move toward or away from the platform 3; and a fourth drive component (not shown), which is connected to the balancing component 4 and drives the balancing component to move linearly in a plane parallel to the platform 3. In this embodiment, the balancing components 4 include two pairs, one pair of balancing components 4 located on the left and right sides of the platform 3, and the other pair of balancing components 4 located on the front and rear sides of the platform 3. To this end, the walking mechanism includes two pairs, each of which acts on the two pairs of balancing components 4.

[0056] Specifically, a pair of balancing components 4 located on the left and right sides of the platform 3 can be selected to achieve vertical and front-to-back movement relative to the platform 3, and a pair of balancing components 4 located on the front and rear sides of the platform 3 can be selected to achieve vertical and left-to-right movement relative to the platform 3. During forward and backward movement, the pair of balancing components 4 located on the front and rear sides of the platform 3 are raised by the relative third driving components 9. At this time, the pair of balancing components 4 located on the left and right sides of the platform 3 contact the support surface, while the pair of balancing components 4 located on the front and rear sides of the platform 3 are suspended in the air. The pair of balancing components 4 located on the left and right sides of the platform 3 are driven by the fourth driving component to perform linear motion in a horizontal plane parallel to the platform 3. At this time, this linear motion is linear motion along the front-to-back direction of the platform 3. Similarly, during left and right movement, the left and right balancing components 4 are raised, and the front and rear balancing components 4 are driven by the fourth driving component to perform linear motion in a left-to-right direction along a plane parallel to the platform 3, thereby driving the static load detection device to move. In this embodiment, the two pairs of balancing components 4 are driven to move alternately by two pairs of walking mechanisms, thereby conveniently moving the static load detection device.

[0057] The third driving component 9 and the fourth driving component can be selected as oil cylinders.

[0058] On the basis of the above technical solution, Figure 3 An embodiment of the present invention further provides a static load detection system, comprising: the static load detection device as described above, and a pile foundation 1 to be tested, wherein a load component 2 is loaded on the pile foundation 1 to be tested.

[0059] Optionally, a jack 7 is further provided between the load component 2 and the pile foundation 1 to be tested.

[0060] Optionally, a steel plate 8 is provided between the jack 7 and the pile foundation 1 to be measured, and the surface area of ​​the steel plate 8 is larger than the cross-sectional area of ​​the jack 7 and the pile foundation 1 to be measured.

[0061] Reference Figure 1 and Figure 3In the embodiment of the present invention, the static load detection system further includes: a displacement sensor 10 for detecting the displacement of the pile foundation 1 to be tested, that is, detecting the displacement of the pile foundation 1 to be tested under the action of the load.

[0062] The displacement sensor 10 is connected to a displacement meter 11 , which is used to display the displacement data detected by the displacement sensor 10 , so as to display the displacement of the pile foundation 1 to be tested caused by the load in real time.

[0063] In this embodiment of the present invention, the pressure sensor 6 can detect the load acting on the pile foundation 1 under test in real time, and the displacement meter 11 connected to the displacement sensor 10 can display the displacement of the pile foundation 1 under test due to the load in real time. This allows the tester to obtain the load-displacement relationship of the pile foundation 1 under test in real time and quickly understand the performance of the device under test 1. In addition, in this embodiment of the present invention, the magnitude of the load acting on the pile foundation 1 under test can be continuously changed, which helps to understand the change in displacement of the pile foundation 1 under test at each load point.

[0064] Reference piles 12 are arranged around the pile foundation 1 to be measured, the displacement meter 11 is arranged on the reference piles 12 , a reference beam 13 is arranged on the reference piles 12 , and the displacement sensor 10 is arranged on the reference beam 13 .

[0065] In the description of the present invention, it should be noted that the terms "upper" and "lower" and other terms indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0066] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or they can refer to connections between the internal parts of two components. A person of ordinary skill in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A static load detection device, used in pile foundation static load detection, characterized in that: include: platform; A load component connected to the platform, the load component including a reaction pile, the platform is provided with a through hole, the reaction pile passes through the through hole; A loading component is disposed on the platform and connected to the load component. The loading component includes a first driving component connected to the reaction pile and providing a driving force for the reaction pile to move. The first driving component is an oil cylinder. At least one pair of balancing components, wherein the pair of balancing components are respectively arranged on both sides of the platform, one end of the balancing component is connected to the platform, and the other end is used to be installed on the bearing surface, and the balancing component is in surface contact with the bearing surface.

2. The static load detection device according to claim 1, characterized in that: The loading component also includes: A clamping plate, the clamping plate being arranged around the reaction pile; A second driving component is connected to the clamping plate, and the second driving component drives the clamping plate to clamp the reaction pile.

3. The static load detection device according to claim 2, characterized in that: The loading assembly further comprises a weight block, one end of which is arranged on the platform, and the other end of which is connected to the first driving component, and the clamping plate is connected to the weight block.

4. The static load detection device according to claim 1, characterized in that: The end of the load component is connected with a pressure sensor.

5. The static load detection device according to claim 1, characterized in that: The balancing components include two pairs, one pair of the balancing components is arranged on the left and right sides of the platform, and the other pair of the balancing components is arranged on the front and back sides of the platform.

6. The static load detection device according to claim 5, characterized in that: It also includes a walking mechanism, which includes: a third driving component, the third driving component being connected to the balancing component, and the third driving component driving the balancing component to move closer to or away from the platform; A fourth driving component is connected to the balancing component, and the fourth driving component drives the balancing component to perform linear motion on a plane parallel to the platform.

7. A static load detection system, characterized in that: The static load detection device comprises the static load detection device according to any one of claims 1 to 6, and further comprises a pile foundation to be tested, wherein the load component is loaded on the pile foundation to be tested.

8. The static load detection system according to claim 7, characterized in that: A jack is provided between the load component and the pile foundation to be measured, a steel plate is provided between the jack and the pile foundation to be measured, and an area of ​​the steel plate is larger than a cross-sectional area of ​​the jack and the pile foundation to be measured.

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