Experimental device for detecting static load of pile foundation

Abstract

The utility model discloses an experimental device for detecting static load of a pile foundation, which comprises two truss girders, steel pipe piles fixedly connected to the bottoms of the two truss girders, a distribution beam arranged on the tops of the two truss girders, a supporting plate arranged on the top of the distribution beam, a pre-pressing block arranged on the top of the supporting plate, and a steel pipe pile arranged on the top of the pre-pressing block. A bearing beam is fixedly connected to the center of the bottom of the distribution beam, a test pile is arranged at the bottom of the bearing beam, and a jack is arranged between the top of the test pile and the bottom of the bearing beam. The truss girder, the distribution girder, the pre-pressing block, the bearing beam and the test pile are matched with one another, the steel pipe pile is driven underground, the steel cylinder platform is built on the top of the steel pipe pile through the truss girder and the distribution girder, loads are transmitted to the test pile through the jack, a counter-force system is formed, and when the ground bearing capacity is insufficient, the steel cylinder platform can disperse pressure, so that the test efficiency is improved. The influence of foundation settlement on the test is avoided, and the instability of the test pile caused by overlarge load in the test process can be prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to pile foundation static load detection experiment equipment technical field, concretely to a kind of experimental device of detecting pile foundation static load. BACKGROUND

[0002] Pile foundation static load experiment is a technique for detecting the bearing capacity of pile foundation in engineering. It is the most accurate and reliable test method for determining the ultimate bearing capacity of single pile. The comparison error of static load test results is used as the basis for determining whether a dynamic load test method is mature.

[0003] Pile foundation static load detection is a test that determines the bearing capacity and stability of pile foundation by applying static load to it and testing its settlement or deformation under load. It mainly includes vertical compression static load test and horizontal static load test, which respectively evaluate the performance of pile foundation in vertical and horizontal directions.

[0004] Currently, when conducting pile foundation static load experiments on landfilled land, traditional static load tests cannot be completed due to the thickness of the silt in the terrain being over 20 meters deep, and the land is prone to collapse, making it impossible to collect pipe pile data. Therefore, a steel cylinder platform is needed to implement static load tests.

[0005] To this end, we propose a kind of experimental device for detecting pile foundation static load. CONTENT OF THE UTILITY MODEL

[0006] The purpose of this section is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the utility model name to avoid obscuring the purpose of this section, the abstract of the specification and the utility model name. Such simplifications or omissions cannot be used to limit the scope of the utility model.

[0007] To solve the above technical problems, according to one aspect of the utility model, the utility model provides the following technical scheme:

[0008] An experimental device for detecting pile foundation static load includes two truss beams, two steel pipe piles are fixedly connected to the bottom of the two truss beams, a distribution beam is provided at the top of the two truss beams, a support plate is provided at the top of the distribution beam, and a pre-pressing block is provided at the top of the support plate.

[0009] A load-bearing beam is fixedly connected to the center of the bottom of the distribution beam, a test pile is provided at the bottom of the load-bearing beam, and a jack is provided between the top of the test pile and the bottom of the load-bearing beam.

[0010] As a preferred scheme of the experimental device for detecting static load of pile foundation, four steel pipe piles are arranged, the four steel pipe piles are evenly distributed at the bottom of the truss beam, the bottom of the steel pipe pile is arranged in a conical shape, the steel pipe pile is conveniently driven into the ground, and the stability of the steel cylinder static load test platform is improved.

[0011] As a preferred scheme of the experimental device for detecting static load of pile foundation, the distribution beam and the truss beam are arranged in a perpendicular manner, so as to provide a support platform for the top pre-pressing block.

[0012] As a preferred scheme of the experimental device for detecting static load of pile foundation, the support plate is internally fixedly connected with a grid net plate, the support plate is made of high-strength stainless steel, the support plate can support the top pre-pressing block, plays a role in uniform counterweight, and balances the test load applied to the top of the pile.

[0013] As a preferred scheme of the experimental device for detecting static load of pile foundation, the two truss beams are located above the ground, and the steel pipe pile is located below the ground, the steel pipe pile is driven into the ground below the ground, and serves as a basic support of the platform, so as to conveniently transmit the load to the ground.

[0014] Compared with the prior art, the experimental device for detecting static load of pile foundation has the beneficial effects that:

[0015] The truss beam, the distribution beam, the pre-pressing block, the bearing beam and the test pile are cooperated with each other, the steel pipe pile is driven into the ground below the ground, the steel cylinder platform is built at the top of the steel pipe pile by using the truss beam and the distribution beam, the load is transmitted to the test pile by the jack, a counterforce system is formed, when the ground bearing capacity is insufficient, the steel cylinder platform can disperse the pressure, the ground settlement does not affect the test, and the test pile is prevented from being unstable due to excessive load in the test process. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the utility model will be described in detail below in combination with the drawings and detailed embodiments. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor. Wherein:

[0017] Fig. 1 It is a perspective view of the experimental device for detecting static load of pile foundation of the utility model;

[0018] Fig. 2 It is a bearing beam structure schematic view of the experimental device for detecting static load of pile foundation of the utility model;

[0019] Fig. 3The utility model provides a kind of experimental device's test pile installation schematic diagram for detecting pile foundation static load.

[0020] Legend: 1, truss beam; 2, steel pipe pile; 3, distribution beam; 4, support plate; 5, pre-press block; 6, bearing beam; 7, test pile; 8, jack. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model will be described in detail below with reference to the drawings.

[0022] Secondly, the utility model is described in detail in combination with schematic diagram, in order to facilitate explanation, the sectional view of device structure will be partially enlarged without general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the utility model herein. In addition, three-dimensional spatial dimensions of length, width and depth should be included in actual manufacture.

[0023] In order to make the purpose, technical scheme and advantage of the utility model more clear, the embodiments of the utility model will be described in further detail below with reference to the drawings.

[0024] Please refer to Figs. 1-3 The utility model provides a kind of experimental device for detecting pile foundation static load, including two truss beams 1, two truss beams 1 bottom fixedly connected with steel pipe pile 2. Wherein, two truss beams 1 are located above ground, steel pipe pile 2 is located below ground, by being hit into steel pipe pile 2 below ground, as the basis support of platform, it is convenient to pass load to ground.

[0025] Steel pipe pile 2 is provided with four, four steel pipe piles 2 are evenly distributed in the bottom of truss beam 1, the bottom of steel pipe pile 2 is conical, it is convenient to hit steel pipe pile 2 into underground, improves the stability of steel cylinder static load test platform.

[0026] Two truss beams 1 top are provided with distribution beam 3, wherein, distribution beam 3 and truss beam 1 are perpendicular to each other and are provided, it is convenient to provide support platform for top pre-press block 5.

[0027] Distribution beam 3 top is provided with support plate 4, and support plate 4 top is provided with pre-press block 5. Support plate 4 is fixedly connected with grid net plate in the inside, and support plate 4 is high-strength stainless steel material, it is convenient to support top pre-press block 5, plays the role of uniform counterweight, balances the test load applied on pile top.

[0028] Distribution beam 3 bottom center is fixedly connected with bearing beam 6, and bearing beam 6 bottom is provided with test pile 7, and test pile 7 top and bearing beam 6 bottom are jointly provided with jack 8.

[0029] In use, first, according to the maximum load of the experiment, the specifications and arrangement of the truss beam 1, the distribution beam 3 and the support plate 4 are calculated, then the steel pipe pile 2 or the steel cylinder is punched into the ground as a support foundation, then the truss beam 1 and the distribution beam 3 are laid on the top of the steel pipe pile 2 to form a platform framework, then the grid support plate 4 is covered on the top of the platform framework to form a heap loading plane, then the counterweight preloading block 5 is stacked layer by layer according to the requirements of the experiment, and the jack 8 and the sensor are installed.

[0030] In the process of building, the platform deformation is checked in real time to ensure the safety of the structure.

[0031] Although the utility model has been described above with reference to the embodiments, various improvements can be made and equivalent parts can be replaced without departing from the scope of the utility model. In particular, as long as there is no structural conflict, the features in the embodiments disclosed by the utility model can be combined in any way, and the combinations are not exhaustively described in the specification only for the purpose of saving space and resources. Therefore, the utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An experimental device for detecting the static load of a pile foundation, comprising two truss beams (1), characterized in that, Two said truss beam (1) bottom fixed connection has steel pipe pile (2), two said truss beam (1) top is provided with distribution beam (3), distribution beam (3) top is provided with support plate (4), support plate (4) top is provided with preloading block (5); The bottom center of the distribution beam (3) is fixedly connected with the bearing beam (6), the bottom of the bearing beam (6) is provided with the test pile (7), and the top of the test pile (7) and the bottom of the bearing beam (6) are jointly provided with the jack (8).

2. The experimental device for detecting static load of pile foundation according to claim 1, characterized in that, The steel pipe pile (2) is provided with four, four said steel pipe pile (2) evenly distributed in the bottom of the truss beam (1), the bottom of the steel pipe pile (2) is conical.

3. The experimental device for detecting static load of pile foundation according to claim 1, characterized in that, The distribution beam (3) and the truss beam (1) are perpendicular to each other.

4. The experimental device for detecting static load of a pile foundation according to claim 1, characterized in that, The support plate (4) is fixedly connected with the grid net plate inside, and the support plate (4) is made of high-strength stainless steel.

5. The experimental device for detecting static load of pile foundation according to claim 1, characterized in that, Two said truss beam (1) are located above the ground, and the steel pipe pile (2) is located below the ground.

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