Static load tester device
The static load testing device enables automatic loading for the bending test of prestressed concrete piles, solving the error problem of traditional manual loading and improving the accuracy of the test.
Patent Information
- Application Number
- CN202422795016.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-16
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-11-16
AI Technical Summary
In existing tests on the bending performance of prestressed concrete piles, manual loading makes it difficult to accurately control the load, resulting in large errors in the test results. Traditional devices cannot achieve automatic loading and precise control.
The static load testing device, including a distribution beam, dual-oil circuit jacks, pressure transmitters and hydraulic oil pipes, is used to automatically control loading and unloading through the main unit of the static load testing device, ensuring that the load is stable within the preset range.
It improves the accuracy of testing and detection, reduces human influence, and makes test results closer to the actual situation.
Smart Images
Figure CN223727572U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a static load testing instrument device relates to prefabricated component quality detection equipment technical field, concretely relates to a prestressed concrete pile bending resistance test device. BACKGROUND
[0002] With the development of urbanization, the height and weight of buildings are increasing, and the foundation engineering increasingly needs to use high-strength prestressed concrete piles as foundations. Prestressed concrete pile foundations have the characteristics of large bearing capacity, high stiffness, small deformation, and strong adaptability, and are widely used in high-rise buildings, large workshops, highways, wharfs, and other engineering. In the design and construction of prestressed concrete piles, bending resistance is a very important indicator.
[0003] The bending resistance test generally selects prestressed concrete piles, and the test bench is placed on a solid and flat site to ensure that the pile body is uniformly stressed during loading. During testing, the prestressed concrete pile is placed between two support points along the longitudinal direction, and two forces perpendicular to the longitudinal direction are applied to cause bending deformation. At the same time, the appearance and development of cracks in the pile body are observed by a crack observation instrument, and the test values are recorded.
[0004] During the bending test of the prestressed concrete pile, the load is increased from zero to 80% of the cracking moment of the corresponding standard pile at a level difference of 20%. Then, the load is continuously increased to 100% of the cracking moment at a level difference of 10% of the cracking moment. The duration of each load level is 3 minutes. Observe whether cracks appear. If cracks appear, measure and record the crack width.
[0005] If no cracks appear at 100% of the cracking moment, continue to load at a level difference of 5% of the cracking moment until cracks appear. The duration of each load level is 3 minutes, and the crack width is measured and recorded. Continue to load at a level difference of 5% of the corresponding standard limit moment until one of the following limit state test signs appears (the crack width of the tensile concrete reaches 1.5 mm; 2, the tensile reinforcement is pulled off; the compressive concrete is damaged). The duration of each load level is 3 minutes, and the readings are observed and recorded.
[0006] At present, most of the bending resistance tests of prestressed concrete piles use single-oil-way jacks with digital force value sensors to manually load the pile body. The digital force value sensor needs an external power supply, and the single-oil-way jack is generally suitable for manual loading. It cannot automatically load the jack through the instrument, and it is difficult to accurately control the load when manually loading with the jack. The load value of each level is difficult to maintain within the preset range, and the traditional method can affect the final test results. UTILITY MODEL CONTENTS
[0007] In order to overcome the above technical problems existing in the prior art, the utility model discloses a static load testing instrument device carries out prestressed concrete pile bending test, including distribution beam, double oil circuit jack, pressure transmitter, hydraulic oil pipe, static load testing instrument host computer and so on, and the double oil circuit jack forms a set of loading device directly with pressure transmitter through hydraulic oil pipe, and through static load testing instrument host computer automatic control loading device carries out step by step loading until the test ends.
[0008] Further, the double oil circuit jack is arranged on the upper part of the distribution beam.
[0009] Further, after inputting the load value of each stage in the static load testing instrument host computer and starting the test, the device can carry out step by step automatic loading according to the preset load value.
[0010] Further, after inputting the duration of each stage load value in the static load testing instrument host computer, the device can carry out automatic loading or unloading within the duration of each stage load, so that the load is stable within the preset range.
[0011] The utility model has achieved remarkable effect, through the device can be in static load testing instrument host computer input each stage's grading load value and the duration of each stage load, and static load testing instrument host computer carries out automatic step by step loading to double oil circuit jack according to the preset data through pressure transmitter, and carries out automatic loading or unloading within the duration of each stage load, effectively improves the accuracy of test detection, reduces the human influence factor, makes the test result closer to the actual situation. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 It is the front view of the utility model embodiment
[0013] Figure 2 It is the left view of the utility model embodiment DETAILED DESCRIPTION
[0014] Embodiment 1
[0015] Referring to Figure 1 , Figure 2The utility model provides test device includes counterforce frame 1, double oil path jack 2, distribution beam 3, distribution beam fixed hinge support 4, distribution beam rolling hinge support 5, U type backing plate 6, prestressed concrete pile 7, fixed hinge support 8, rolling hinge support 9, bottom buttress 10, hydraulic oil pipe 11, pressure transmitter 12, static load tester host 13, pressure transmitter 12 is connected with double oil path jack 2 through hydraulic oil pipe 11, and static load tester host 13 and pressure transmitter 12 can carry out wireless connection and communication, and detection personnel can very conveniently control pressure transmitter 12 through static load tester host 13, has realized the automatic step -by -step loading of prestressed concrete pile bending performance test, and effectively reduced the human influence factor produced in the manual loading process in traditional method.
[0016] Although the embodiments of the utility model have been shown and described, it will be appreciated by those of ordinary skill in the art that various changes, modifications, alternatives, and variations can be made thereto without departing from the principles and spirit of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A static load tester apparatus, characterized by: The utility model relates to a static load testing instrument, including counterforce frame (1), double oil path jack (2), distribution beam (3), distribution beam fixed hinge support (4), distribution beam rolling hinge support (5), U type backing plate (6), prestressed concrete pile (7), fixed hinge support (8), rolling hinge support (9), bottom buttress (10), hydraulic oil pipe (11), pressure transmitter (12), static load testing instrument host (13), pressure transmitter (12) is connected with double oil path jack (2) through hydraulic oil pipe (11), static load testing instrument host (13) and pressure transmitter (12) can carry out wireless connection and communication.
2. The static load tester apparatus of claim 1, wherein: The upper part of the distribution beam (3) is provided with the double oil path jack (2).
3. The static load tester apparatus of claim 1, wherein: The static load testing instrument host (13) can set the load value of each stage.
4. The static load tester apparatus of claim 1, wherein: The static load testing instrument host (13) can set the duration of each stage load.