Fabricated flat plate load test system with length-adjustable force transfer columns

Abstract

The utility model discloses an assembly type flat plate load test system with length-adjustable force transmission columns. The test system comprises a rigid frame type steel beam ballasting platform, a plurality of column pieces, a pressure sensor, a jack and a bearing plate, the jack is placed on the surface of the bearing plate, a plurality of column pieces are connected end to end to form a force transmission column, one end of the force transmission column is connected with the top of the jack, and the other end of the force transmission column is connected to the bottom of the rigid frame type steel beam weight platform. The pressure sensor is arranged between one end of the force transmission column and the top of the jack.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of the flat plate load test in the long and narrow foundation pit and pit groove in pipe network engineering, and particularly relates to an assembled flat plate load test system with adjustable length force transmission column. BACKGROUND

[0002] The conventional heavy platform is formed by hoisting and erecting a plurality of independent steel beams at the test site, and has great randomness, uneven quality, cannot guarantee the erection quality, and has no connection between the steel beams, poor integrity and stability, and low safety and reliability.

[0003] The conventional force transmission column is made on site according to the test point depth, which wastes a large amount of manpower, material resources and time cost and cannot guarantee the quality, greatly increases the detection and installation time, and seriously affects the overall construction progress of the project. The conventional force transmission column cannot be reused in different detection projects, and the energy consumption and material consumption do not conform to the concept of energy conservation, environmental protection and sustainable development.

[0004] In addition, due to the limitations of factors such as site conditions, instruments and equipment, materials and manufacturing personnel skills, the project site can only hoist and erect the conventional heavy platform and make the conventional force transmission column, which not only has long hoisting and erection and manufacturing time, but also cannot meet the requirements of the test in terms of quality, precision, reliability (strength, stiffness), stability and safety, often resulting in instability and damage during the test, which not only affects the construction progress of the project, but also cannot guarantee the accuracy and reliability of the test data. In short, the heavy platform and the force transmission column are important components in the long and narrow foundation pit and pit groove flat plate load test, and play a crucial role in ensuring the accuracy and reliability of the test results. Defects that occur during use should be promptly addressed and necessary technical improvements should be made. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model aims to provide an assembled flat plate load test system with adjustable length force transmission column, which sets up a heavy platform by installing a rigid frame type steel beam on the center of the bearing capacity of the test point, piles up heavy concrete on the heavy platform, and relies on the jack, pressure sensor and assembled modular adjustable length force transmission column placed on the pressure plate to gradually lift the heavy platform according to the specification requirements, so as to gradually apply vertical pressure to the surface of the foundation soil, so as to simulate the stress state of the foundation soil in the actual project.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] An assembled flat plate load test system with adjustable length force transmission column, the test system comprises a rigid frame type steel beam weight platform, a plurality of column members, a pressure sensor, a jack and a pressure bearing plate; the jack is placed on the surface of the pressure bearing plate, a plurality of column members are connected at the head and tail to form a force transmission column, one end of the force transmission column is connected with the top of the jack, the other end of the force transmission column is connected to the bottom of the rigid frame type steel beam weight platform, and the pressure sensor is arranged between the one end of the force transmission column and the top of the jack.

[0008] It should be noted that the buttress is also provided, and the buttress is arranged on both sides of the bottom of the rigid frame type steel beam weight platform, and the force transmission column is located between the buttresses.

[0009] It should be noted that the weight concrete is also included, and a certain weight of the weight concrete is evenly distributed and placed on the surface of the rigid frame type steel beam weight platform during the test.

[0010] It should be noted that the plurality of column members are connected at the head and tail through high-strength outer hexagonal bolts for steel structures.

[0011] It should be noted that the center of the rigid frame type steel beam weight platform, the force transmission column, the pressure sensor, the jack and the center of the pressure bearing plate are coaxially arranged.

[0012] The assembled flat plate load test platform with adjustable length force transmission column has the advantages that the platform is designed by using advanced computer simulation technology and material mechanics analysis method, and is produced by professionalization and modularization, has high strength and rigidity, good integrity and stability, and adjustable length, each module can be repeatedly used in different detection projects, is energy-saving and environment-friendly, and meets the concept of sustainable development.

[0013] In conclusion, the assembled flat plate load test platform with adjustable length force transmission column can be quickly adjusted on site according to actual test bearing capacity, span and depth, has remarkable advantages in integrity, bearing capacity, application range, work efficiency, adaptability, flexibility, energy saving and environmental protection, safety, reliability, maintenance and replacement, and is suitable for flat plate load test in long and narrow foundation pits and pit grooves of pipe network engineering. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The figure is a structural schematic view of the utility model. DETAILED DESCRIPTION

[0015] The utility model will be further described below in combination with the drawings, it is to be explained that the following examples take the technical scheme as the premise, gives the detailed implementation and specific operation process, but the protection scope of the utility model is not limited to the present embodiment.

[0016] As Figure 1 shown, the utility model discloses a kind of assembly type flat plate load test system with adjustable length force transmission column, specifically speaking:

[0017] Ground 1 has a narrow foundation pit for test, foundation soil 10 in pit groove, further, the utility model includes rigid frame type steel beam weight platform 4, several column pieces, pressure sensor 7, jack 8 and pressure plate 9;The jack 8 is placed on the surface of the pressure plate 9, and several column pieces are connected head-to-tail to form a force transmission column 5, one end of the force transmission column 5 is connected with the top of the jack 8, the other end of the force transmission column 5 is connected to the bottom of the rigid frame type steel beam weight platform 4, and the pressure sensor 7 is arranged between one end of the force transmission column 5 and the top of the jack.

[0018] Further, as Figure 1 shown, the utility model further is equipped with buttress 2, the buttress 2 is respectively arranged at the bottom of the rigid frame type steel beam weight platform 4 both sides, and the force transmission column 5 is located between the buttress 2.

[0019] Further, as Figure 1 shown, the utility model further includes weight concrete 3, and during test, weight concrete 3 of certain weight is evenly distributed and placed on the surface of the rigid frame type steel beam weight platform 4.

[0020] Further, as Figure 1 shown, the column piece of the utility model is connected head-to-tail by high-strength outer hexagonal bolt 6 for steel structure.

[0021] Further, the center of the rigid frame type steel beam weight platform, the force transmission column, the pressure sensor, the jack and the center of the pressure plate of the utility model are coaxially arranged.

[0022] Embodiment

[0023] 1, the unit in station handles load test detection commission, test operator goes to project site according to commissioning sheet to determine test object position, elevation and the detection order of each test point and proposes specific test point site treatment requirement.

[0024] 2. After the test point and site meet the test requirements, the medium-coarse sand is leveled at the test point, the bearing plate, the jack, the pressure sensor, the platform support pier are installed in sequence, the "assembled modular adjustable length force transmission column" is assembled on site according to the height difference between the pressure sensor and the platform support pier, the assembled "assembled modular adjustable length force transmission column" and the "rigid frame type steel beam weight platform" are connected and assembled into the "assembled flat plate load test platform with adjustable length force transmission column" by bolts, the integrated "assembled flat plate load test platform with adjustable length force transmission column" is installed on the platform support pier (note: the geometric center of the bearing plate, the center of force of the jack and the axis center of the force transmission column should be on the same plumb line), the reference pile and the reference beam are installed, the displacement measuring device (displacement sensor) is installed, the hydraulic oil pipe connecting the jack and the oil pump is connected, the oil pump, the pressure sensor and the displacement sensor are connected through the load tester host.

[0025] 3. The technical parameters of the oil pump, the jack and the displacement sensor are set in the host, the test is carried out according to the load test standard in the acceptance specification, until the test is completed, the test devices are disassembled.

[0026] For those skilled in the art, various corresponding changes and modifications can be given according to the above technical solutions and concepts, and all these changes and modifications should be included in the protection scope of the utility model claim.

Claims

1. An assembled flat plate load test system with an adjustable length transfer column, characterized in that, The test system comprises a rigid frame type steel beam weight platform, a plurality of column members, a pressure sensor, a jack and a pressure bearing plate; the jack is placed on the surface of the pressure bearing plate, the plurality of column members are connected at the head and tail to form a force transmission column, one end of the force transmission column is connected with the top of the jack, the other end of the force transmission column is connected with the bottom of the rigid frame type steel beam weight platform, and the pressure sensor is arranged between one end of the force transmission column and the top of the jack.

2. The assembled plate load testing system with an adjustable length transfer column of claim 1, wherein, Support piers are further arranged, and the support piers are arranged on both sides of the bottom of the rigid frame type steel beam weight platform, and the force transmission column is located between the support piers.

3. The assembled plate load testing system with an adjustable length transfer column of claim 1, wherein, The test system further comprises weight concrete, and during the test, a certain weight of the weight concrete is evenly distributed and placed on the surface of the rigid frame type steel beam weight platform.

4. The assembled plate load testing system with an adjustable length transfer column of claim 1, wherein, The plurality of column members are connected at the head and tail through high-strength outer hexagonal bolts for steel structures.

5. The assembled flat plate load test system with an adjustable length transfer column according to claim 1, wherein, The center of the rigid frame type steel beam weight platform, the force transmission column, the pressure sensor, the center of the jack and the center of the pressure bearing plate are coaxially arranged.

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