Pile pressing test platform

Abstract

The utility model relates to the field of single pile static load tests, in particular to a pile pressing test platform which comprises four anchor piles, two secondary beams, a main beam and a loading device, when the pile pressing test platform is used, the loading device provides loading force for the main beam, the main beam is fixedly connected with the secondary beams, and the secondary beams are fixedly connected with the anchor piles to form a counter-force structure; according to the pile pressing test platform, the secondary beams are directly erected and fixed to the anchor piles, the main beams are arranged on the secondary beams and are in partial sinking clamping connection with the secondary beams, and when the pile pressing test platform is used, the whole structure is good in stability, and the pile pressing test platform can be applied to vertical compression resistance static load tests of test piles embedded into hard rock stratums and other special geological conditions and is convenient to apply and popularize.

Description

Technical Field

[0001] This utility model relates to the field of static load testing of single piles, and specifically to a pile driving test platform. Background Technology

[0002] The static load test for vertical compression of a single pile is a common method for verifying the bearing capacity of pile foundations. It determines the ultimate bearing capacity and settlement characteristics of a single pile in the vertical direction by simulating the stress conditions of the pile under actual working conditions. Currently, the test mainly uses an anchor pile reaction structure, which involves driving anchor piles into the soil and using the friction between the anchor pile and the soil to provide the reaction force required for the test.

[0003] With the rapid development of national construction, especially in mountainous areas, coastal regions, and high-rise buildings in cities, the geological conditions for monopile embedding are becoming increasingly complex, leading to the widespread application of special pile types such as rock-socketed steel pipe piles. These unique geological conditions place higher demands on the structural stability of monopile vertical compressive static load tests. Rock-socketed piles and other special pile types are embedded in hard rock strata, resulting in complex geological conditions and high end resistance. If the reaction device structure lacks sufficient stability, it may lead to load instability, inaccurate test results, or even prevent the test from proceeding smoothly. Utility Model Content

[0004] The purpose of this invention is to address the problem of insufficient structural stability in existing single-pile vertical compressive static load test structures when applied to tests under special geological conditions, and to provide a pile driving test platform. This test platform has a simple structure, high stability, is applicable to special geological conditions, and is easy to promote and apply.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A pile driving test platform includes four anchor piles arranged around a test pile; two secondary beams erected on and fixedly connected to the anchor piles, with the two secondary beams positioned opposite each other on both sides of the test pile; a main beam erected on and fixedly connected to the two secondary beams, with the main beam located directly above the test pile; each secondary beam has a slot, and the main beam is adapted to the slot to form a partial engagement; and a loading device disposed at the top of the test pile, capable of contacting the main beam and providing a loading force.

[0007] The pile driving test platform provided by this utility model includes four anchor piles, two secondary beams, a main beam, and a loading device. In use, the loading device provides loading force to the main beam. The main beam is fixedly connected to the secondary beams, and the secondary beams are fixedly connected to the anchor piles to form a reaction structure. In the pile driving test platform provided by this application, the secondary beams are directly erected and fixed on the anchor piles, and the main beam is set on the secondary beams and partially sinks and engages with them. In use, the entire structure has good stability and can be applied to the vertical compressive static load test of test piles embedded in hard rock strata and other special geological conditions, which is convenient for promotion and application.

[0008] As a preferred embodiment of this utility model, the two secondary beams are located on both sides of the test pile and are arranged in parallel, while the main beam is arranged perpendicular to the secondary beams.

[0009] As a preferred embodiment of this utility model, it also includes a load, which is stacked on the plane formed by the secondary beam and symmetrically distributed on both sides of the main beam.

[0010] As a preferred embodiment of this utility model, it also includes a support frame, which is erected on the plane formed by the secondary beam, and the load is stacked on the support frame.

[0011] As a preferred embodiment of this utility model, each of the secondary beams and the anchor piles are fixed by a first connector;

[0012] The first connecting component includes a first spreader beam, two first tie rods, and a pin.

[0013] The pin is inserted through the side of the anchor pile, the first spreader beam is set on the top of the secondary beam, and the two ends of the first spreader beam are respectively fixed to one end of the two first tie rods, and the other ends of the two first tie rods are respectively fixed to the two ends of the pin.

[0014] As a preferred embodiment of this utility model, the main beam and each of the secondary beams are fixed by a second connector;

[0015] The second connector includes two second spreader beams, two third spreader beams, and four second tie rods;

[0016] Two second spreader beams are mounted on top of the main beam and positioned opposite each other on both sides of the secondary beam.

[0017] The two third spreader beams are located at the bottom of the secondary beam and are positioned opposite each other on both sides of the main beam.

[0018] The two ends of the second spreader beam are respectively fixed by one end of the two second tie rods, and the other ends of the two second tie rods are respectively fixed to one end of the two third spreader beams.

[0019] As a preferred embodiment of this utility model, the loading device includes a jack and an oil pump connected to the jack; a pressure gauge is installed on the oil pump for controlling loading and unloading.

[0020] As a preferred embodiment of this utility model, it also includes two reference piles, which are located on both sides of the test pile respectively. An observation beam is provided between the two reference piles, and the observation beam is located below the secondary beam. A dial gauge is provided on the observation beam for observing the displacement of the test pile and the anchor pile.

[0021] As a preferred embodiment of this utility model, it also includes a test platform, which is disposed below the secondary beam.

[0022] As a preferred embodiment of this utility model, the test platform includes,

[0023] Multiple pairs of brackets, each pair of brackets being symmetrically welded to the same horizontal line on each anchor pile;

[0024] Multiple first I-beams are symmetrically laid on the corbel with the anchor pile as the center, and welded to form the first I-beam layer;

[0025] Multiple second I-beams are erected at intervals in the direction perpendicular to the first I-beam layer and welded together to form the second I-beam layer.

[0026] Multiple third I-beams are erected at intervals in the direction perpendicular to the second I-beam layer and welded together to form the third I-beam layer.

[0027] A steel plate, which is disposed on the third I-beam layer.

[0028] As a preferred embodiment of this utility model, the distance between the steel plate, the first I-beam layer, the second I-beam layer and the third I-beam layer and the test pile is not less than 20cm.

[0029] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0030] The pile driving test platform provided by this utility model includes four anchor piles, two secondary beams, a main beam, and a loading device. In use, the loading device provides loading force to the main beam. The main beam is fixedly connected to the secondary beams, and the secondary beams are fixedly connected to the anchor piles to form a reaction structure. In the pile driving test platform provided by this application, the secondary beams are directly erected and fixed on the anchor piles, and the main beam is set on the secondary beams and partially sinks and engages with them. In use, the entire structure has good stability and can be applied to the vertical compressive static load test of test piles embedded in hard rock strata and other special geological conditions, which is convenient for promotion and application. Attached Figure Description

[0031] Figure 1This is a top view of the pile driving test platform in Example 1.

[0032] Figure 2 for Figure 1 A side view of the pile driving test platform.

[0033] Figure 3 for Figure 1 Another side view of the pile driving test platform.

[0034] Figure 4 This is a top view of part of the test platform in Example 1.

[0035] Figure 5 This is a side view of the test platform in Example 1.

[0036] icon:

[0037] 1-Test pile; 11-Anchor pile; 111-First spreader beam; 112-First tie rod; 113-Pin;

[0038] 12-Secondary beam; 121-Slot; 122-Support frame;

[0039] 13-Main beam; 131-Second spreader beam; 132-Third spreader beam; 133-Second tie rod;

[0040] 14-Loading device;

[0041] 15 - Loadings;

[0042] 2-Benchmark pile; 21-Observation beam; 211-Dial gauge;

[0043] 3-Test platform; 31-Bracket; 32-First I-beam layer; 33-Second I-beam layer; 34-Third I-beam layer; 35-Steel plate; 36-Guardrail. Detailed Implementation

[0044] The present invention will be further described in detail below with reference to experimental examples and specific embodiments. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0045] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of the present invention is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the product / equipment / device is usually placed during use. These terms are merely for the purpose of facilitating the description of the present invention or simplifying the description in specific embodiments, and for enabling those skilled in the art to quickly understand the solution. They do not indicate or imply that a particular device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship, and therefore should not be construed as limiting the present invention.

[0046] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but that it can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0047] Furthermore, the use of terms such as "first," "second," "third," etc. in terminology is merely for distinguishing identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0048] Furthermore, in the description of the embodiments of the present invention, "several", "more than", and "a number of" represent at least two. The number can be any number, such as 2, 3, 4, 5, 6, 7, 8, or 9, and can even exceed nine.

[0049] Furthermore, in the description of the technical solution of this invention, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "provided with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0050] Example 1

[0051] like Figure 1-3 As shown, Embodiment 1 provides a pile driving test platform, including four anchor piles 11, which are arranged around the test pile 1; two secondary beams 12, which are erected on the anchor piles 11 and fixedly connected, and are arranged opposite each other on both sides of the test pile 1; a main beam 13, which is erected on the two secondary beams 12 and fixedly connected, and is located directly above the test pile 1; the secondary beams 12 are provided with slots 121, and the main beam 13 is adapted to the slots 121 to form a partial engagement; and a loading device 14, which is arranged at the top of the test pile 1; the loading device 14 can abut against the main beam 13 and provide loading force.

[0052] In use, the loading device provides loading force to the main beam, which is fixedly connected to the secondary beam, and the secondary beam is fixedly connected to the anchor pile, forming a reaction structure. In the pile driving test platform provided in this application, the secondary beam is directly erected and fixed on the anchor pile, and the main beam is set on the secondary beam and partially sinks and snaps with the secondary beam. In use, the entire structure has good stability and can be applied to the vertical compressive static load test of test piles embedded in hard rock strata and other special geological conditions, which is convenient for promotion and application.

[0053] In some embodiments, the two secondary beams 12 are located on both sides of the test pile 1 and are arranged parallel to each other, while the main beam 13 is arranged perpendicular to the secondary beams 12. This technical solution ensures higher structural stability of the testing platform.

[0054] In some embodiments, a slab load 15 is also included, which is stacked on the plane formed by the secondary beams 12 and symmetrically distributed on both sides of the main beam 13. The arrangement of the slab load can provide a greater reaction force for the test platform to meet the requirements of different higher single pile bearing capacity values.

[0055] In some embodiments, a support frame 122 is also included, which is erected on the plane formed by the secondary beam 12, and the load 15 is stacked on the support frame 122. The erection of the support frame can better place the load and further improve the stability of the structure.

[0056] In some embodiments, each of the secondary beams 12 and the anchor piles 11 are fixed by a first connector;

[0057] The first connecting component includes a first spreader beam 111, two first tie rods 112, and a pin 113.

[0058] The pin 113 is disposed through the side of the anchor pile 11, the first flat beam 111 is disposed on the top of the secondary beam 12, and the two ends of the first flat beam 111 are respectively fixed to one end of the two first tie rods 112, and the other ends of the two first tie rods 112 are respectively fixed to the two ends of the pin 113.

[0059] The first connector is used for fixation, which is simple in structure, easy to disassemble, and has a good fixing effect, thus better meeting the stability requirements of the test platform.

[0060] In some embodiments, the main beam 13 and each of the secondary beams 12 are fixed by a second connector;

[0061] The second connector includes two second spreader beams 131, two third spreader beams 132, and four second tie rods 133;

[0062] Two second spreader beams 131 are mounted on top of the main beam 13 and are positioned opposite each other on both sides of the secondary beam 12.

[0063] The two third spreader beams 132 are located at the bottom of the secondary beam 12 and are positioned opposite each other on both sides of the main beam 13.

[0064] The two ends of the second flat beam 131 are respectively fixed by one end of the two second tie rods 133, and the other ends of the two second tie rods 133 are respectively fixed to one end of the two third flat beams 132.

[0065] The second connector is used for fixation, which is simple in structure, easy to disassemble, and has a good fixing effect, thus better meeting the stability requirements of the test platform.

[0066] In some embodiments, the loading device 14 includes a jack and an oil pump connected to the jack; the oil pump is equipped with a pressure gauge for controlling loading and unloading. Jacks are commonly used loading devices, convenient to use, and have high loading efficiency.

[0067] In some embodiments, two reference piles 2 are also included, which are located on both sides of the test pile 1 respectively. An observation beam 21 is provided between the two reference piles 2, and the observation beam 21 is located below the secondary beam 12. A dial gauge 211 is provided on the observation beam 21 for observing the displacement of the test pile 1 and the anchor pile 11.

[0068] The establishment of benchmark piles and observation points enables better monitoring of displacement of test piles, ensuring high safety and greater operability.

[0069] In some embodiments, a test platform 3 is also included, which is disposed below the secondary beam 12.

[0070] The setup of the testing platform ensures the convenience of the testing operators.

[0071] In some embodiments, such as Figures 4-5 As shown, the test platform 3 includes,

[0072] Multiple pairs of brackets 31 are symmetrically welded to the same horizontal line on each anchor pile 11;

[0073] Multiple first I-beams are symmetrically laid on the corbel 31 with the anchor pile 11 as the center, and welded to form the first I-beam layer 32;

[0074] Multiple second I-beams are erected at intervals in the direction perpendicular to the first I-beam, and welded together to form the second I-beam layer 33.

[0075] Multiple third I-beams are erected at intervals in the direction perpendicular to the second I-beam, and welded together to form the third I-beam layer 34.

[0076] Steel plate 35, which is disposed on the third I-beam layer 34.

[0077] The test platform has a simple structure, high stability, and is easy to construct.

[0078] In some embodiments, the steel plate, the first I-beam layer, the second I-beam layer, and the third I-beam layer are all spaced at least 20 cm from the test pile. This reduces interference with the test.

[0079] In some embodiments, the edge of the steel plate 35 is surrounded by a guardrail 36. The guardrail can better ensure the safety of the operator.

[0080] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pile driving test platform, characterized in that, include Four anchor piles (11) are installed around the test pile (1); Two secondary beams (12) are erected on the anchor piles (11) and fixedly connected. The two secondary beams (12) are arranged opposite each other on both sides of the test pile (1). The main beam (13) is erected on the two secondary beams (12) and fixedly connected. The main beam (13) is located directly above the test pile (1). The secondary beam (12) is provided with a slot (121), and the main beam (13) is adapted to the slot (121) to form a partial engagement; The loading device (14) is located at the top of the test pile (1); the loading device (14) can abut against the main beam (13) and provide loading force.

2. The pile driving test platform according to claim 1, characterized in that, The two secondary beams (12) are located on both sides of the test pile (1) and are set in parallel. The main beam (13) is set perpendicular to the secondary beams (12).

3. The pile driving test platform according to claim 1, characterized in that, It also includes a load (15), which is stacked on the plane formed by the secondary beam (12) and symmetrically distributed on both sides of the main beam (13).

4. The pile driving test platform according to claim 3, characterized in that, It also includes a support frame (122), which is erected on the plane formed by the secondary beam (12), and the load (15) is stacked on the support frame (122).

5. The pile driving test platform according to claim 1, characterized in that, Each of the secondary beams (12) and the anchor piles (11) is fixed by a first connector; The first connector includes a first flat beam (111), two first tie rods (112), and a pin (113). The pin (113) is disposed through the side of the anchor pile (11), the first flat beam (111) is disposed on the top of the secondary beam (12), the two ends of the first flat beam (111) are respectively fixed to one end of the two first tie rods (112), and the other ends of the two first tie rods (112) are respectively fixed to the two ends of the pin (113).

6. The pile driving test platform according to claim 1, characterized in that, The main beam (13) and each of the secondary beams (12) are fixed by a second connector; The second connector includes two second spreader beams (131), two third spreader beams (132), and four second tie rods (133). Two second spreader beams (131) are positioned on top of the main beam (13) and opposite each other on both sides of the secondary beam (12). The two third spreader beams (132) are located at the bottom of the secondary beam (12) and are positioned opposite each other on both sides of the main beam (13). The two ends of the second flat beam (131) are fixed by one end of the two second tie rods (133), and the other ends of the two second tie rods (133) are fixed to one end of the two third flat beams (132).

7. The pile driving test platform according to claim 1, characterized in that, The loading device (14) includes a jack and an oil pump connected to the jack; a pressure gauge is installed on the oil pump for controlling loading and unloading.

8. The pile driving test platform according to claim 1, characterized in that, It also includes two reference piles (2), which are located on both sides of the test pile (1). An observation beam (21) is set between the two reference piles (2), which is located below the secondary beam (12). A dial gauge (211) is set on the observation beam (21) to observe the displacement of the test pile (1) and the anchor pile (11).

9. The pile driving test platform according to any one of claims 1-8, characterized in that, It also includes a test platform (3), which is located below the secondary beam (12).

10. The pile driving test platform according to claim 9, characterized in that, The test platform (3) includes, Multiple pairs of corbels (31), each pair of corbels (31) are symmetrically welded on the same horizontal line on each anchor pile (11); Multiple first I-beams are symmetrically laid on the corbel (31) with the anchor pile (11) as the center, and welded to form the first I-beam layer (32). Multiple second I-beams are erected at intervals in the direction perpendicular to the first I-beam (32) and welded to form a second I-beam layer (33). Multiple third I-beams are erected at intervals in the direction perpendicular to the second I-beam (33) and welded to form the third I-beam layer (34). A steel plate (35) is disposed on the third I-beam layer (34).

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