CN112666073A - Full-scale pavement acceleration loading device with pavement lateral force coefficient testing function - Google Patents

Abstract

The invention discloses a full-scale pavement acceleration loading device with a pavement lateral force coefficient testing function. Axle of the acceleration loading device for the pavement, the lateral force coefficient testing equipment includes a lateral force coefficient testing device to connect the spherical hinge; the connecting component includes a first connecting piece, a second connecting piece and a third connecting piece; wherein, the first connecting piece and the full-scale connecting piece are The road acceleration loading device is connected with the axle, the second connecting piece is connected with the first connecting piece, the third connecting piece is connected with the second connecting piece, and the third connecting piece is arranged horizontally, and the lateral force coefficient testing equipment is connected with the spherical hinge and the third connecting piece piece connection. The invention can add a pavement lateral force coefficient test function to the existing full-scale pavement acceleration loading device, improve the design concept of the full-scale pavement acceleration loading device, and simplify the pavement acceleration loading test.

Description

Full-scale pavement acceleration loading device with pavement lateral force coefficient testing function

technical field

The invention relates to the technical field of mechanical engineering, in particular to a full-scale road surface acceleration loading device with the function of testing the lateral force coefficient of the road surface.

Background technique

With the continuous development of my country's economic construction, my country's highway mileage has also increased year by year. However, due to the limited investment of road maintenance funds by the road management department, it is of great significance and economic value to accurately detect and evaluate the road during the design and operation period.

The equipment for road detection and evaluation includes full-scale pavement acceleration loading device and lateral force coefficient testing equipment; among them, the full-scale pavement acceleration loading device can simulate vehicles on the road by repeatedly applying controllable loads on the paved test section. It can accelerate the overload effect on the road surface, shorten the damage process of the pavement material in the test section, and analyze the damage mechanism of the road, so as to provide a scientific basis for the design and selection of road structures and the research on the performance of new materials. The lateral force coefficient test equipment measures the lateral force coefficient of the pavement based on a certain principle, which can accurately measure and evaluate the anti-skid performance of the pavement in experiments and use.

However, the current full-scale pavement acceleration loading device and lateral force coefficient testing equipment only have a single function, resulting in cumbersome subsequent road test procedures, complicated equipment installation and debugging, and high test costs.

SUMMARY OF THE INVENTION

The invention provides a full-scale pavement acceleration loading device with a pavement lateral force coefficient testing function, so as to solve the problem that the existing full-scale pavement acceleration loading device and lateral force coefficient testing equipment only have a single function, resulting in cumbersome subsequent road test procedures and equipment. The installation and debugging are complicated, and the test cost is high.

In order to solve the above-mentioned technical problems, the present invention provides the following technical solutions:

A full-scale pavement acceleration loading device with a pavement lateral force coefficient testing function, comprising a full-scale pavement acceleration loading device body, lateral force coefficient testing equipment and connecting components; wherein,

The full-scale road surface acceleration loading device body includes a full-scale road surface acceleration loading device axle, and the lateral force coefficient testing device includes a lateral force coefficient testing device connecting spherical hinges;

The connecting assembly includes a first connecting piece, a second connecting piece and a third connecting piece; wherein the first connecting piece is connected with the axle of the full-scale road acceleration loading device, and the second connecting piece is connected with the The first connecting piece is connected, the third connecting piece is connected with the second connecting piece, and the third connecting piece is arranged horizontally, and the lateral force coefficient testing device is connected with the ball hinge and the third connecting piece.

Optionally, the body of the full-scale road surface acceleration loading device is an annular road surface acceleration loading device.

Optionally, the lateral force coefficient testing device is a CFT continuous road friction coefficient tester.

Optionally, the number of the first connecting pieces is multiple, and the multiple first connecting pieces are symmetrically distributed on both sides of the axle of the full-scale road acceleration loading device.

Optionally, the number of the second connecting pieces is plural, and the first connecting pieces on each side of the axle of the full-scale road acceleration loading device are respectively connected with one of the second connecting pieces.

Optionally, a plurality of mounting holes are provided on the third connecting piece along the length direction of the third connecting piece, and the lateral force coefficient testing device is connected to a ball hinge and any one of the mounting holes can be detachably connected.

Optionally, the connecting assembly is made of angle steel, section steel or steel pipe.

The beneficial effects brought by the technical solution provided by the present invention at least include:

1. The integrated transformation method of the present invention is convenient, the integrated device has a high sampling frequency, and has multiple data collection locations for road lateral force data, which can meet various working conditions and collection requirements, and has high research value of test data.

2. The integrated transformation of this method reduces the type and complexity of the equipment required for the test, simplifies the preparation work such as the installation and debugging of the test equipment, reduces possible interruptions in the test process, and optimizes the use of the test device and the test process. Improved test safety.

3. The integrated transformation of the present invention makes up for the deficiency of the testing capability of the full-scale road acceleration loading device.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

1 is a flow chart of the integrated transformation of a full-scale road acceleration loading device provided by an embodiment of the present invention;

2 is a front view of a full-scale road surface acceleration loading device with a road surface lateral force coefficient testing function provided by an embodiment of the present invention;

3 is a top view of a full-scale road surface acceleration loading device with a road surface lateral force coefficient testing function provided by an embodiment of the present invention;

4 is a front view of a lateral force coefficient testing device provided by an embodiment of the present invention;

5 is a right side view of a lateral force coefficient testing device provided by an embodiment of the present invention;

6 is a front view of a connection assembly provided by an embodiment of the present invention;

FIG. 7 is a top view of a connection assembly provided by an embodiment of the present invention.

Description of reference numbers:

1. The body of the full-scale road acceleration loading device;

11. Full-scale road acceleration loading device body axle;

2. Lateral force coefficient test equipment;

21. The lateral force coefficient test equipment is connected to the spherical hinge; 22. The test wheel; 23. The distance measuring wheel;

3. Connect components;

31. The first connector; 32, the second connector; 33, the third connector; 34, the mounting hole.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

Please refer to FIG. 1 to FIG. 7. This embodiment provides a full-scale road acceleration loading device with a function of testing the lateral force coefficient of the road surface. The purpose of this embodiment is to integrate and transform the existing full-scale road acceleration loading device. It has the function of testing the lateral force coefficient of the pavement, thereby simplifying the subsequent test process, reducing the installation and debugging steps of the test equipment, reducing the test cost, and realizing the multiple and multi-position collection of the lateral force coefficient of the pavement after loading. Provide scientific basis for new material performance research.

Among them, the full-scale pavement acceleration loading device is a device that simulates the real axle load on the full-scale test section by loading the vehicle to test the performance of pavement materials and pavement structures. Equipment for measuring the lateral force coefficient of the road surface with wheels and counterweights.

The process of the integrated transformation of the full-scale road acceleration loading device in this embodiment is shown in Figure 1, including:

S1, according to the test needs, determine the pavement area that needs to collect the lateral force coefficient, select the appropriate lateral force coefficient test equipment according to the actual road conditions and test conditions, and determine the operation area of the test equipment according to the area where the data needs to be collected;

S2, according to the selected lateral force test equipment, select an appropriate position on the full-scale road acceleration loading device to carry out the transformation required for integration;

S3, the transformation required for the integration of the selected pavement lateral force coefficient testing equipment;

S4, design and install the connecting components for the renovated full-scale road acceleration loading device and lateral force coefficient testing equipment;

S5, use the modified full-scale pavement acceleration loading device to carry out the pavement lateral force coefficient test test.

It should be noted that, in this embodiment, a ring road surface acceleration loading device is used for integrated transformation. , Side shift hydraulic cylinder, inner and outer guide arms of the vehicle, inner and outer guide wheels of the vehicle, guide springs, bearing wheels, power supply and receiving devices, limiters, various sensors and control systems. The selection of the retrofit position of the device should meet the following characteristics: it does not affect the stable operation of the full-scale road acceleration loading device; it does not affect the stable loading of the loading components; the retrofit will not interfere with the adjacent or adjacent components; the strength of the retrofitted components conforms to the Operation requirements; meet the needs of test equipment integration, without affecting the functions of the test equipment; beautiful transformation, simple operation, and can be quickly integrated and disassembled with subsequent connecting components. In this regard, in this embodiment, the axle frame area of the full-scale road acceleration loading device is selected for integrated transformation. This area has high structural strength, stable movement form during device operation, large transformation space, and proper transformation will not affect the device.

As for the integrated pavement lateral force coefficient testing equipment, it should have the following characteristics: the equipment is easy to transform and integrate; the equipment has sufficient sampling frequency; the equipment has high cost performance; the integrated and transformed operating area is convenient for data collection; Collecting data has high research value. In this regard, this embodiment uses a CFT continuous road friction coefficient tester that is small in size and easy to transform. Its structure is shown in Figures 4 and 5, including the main body of the test equipment in the form of a trailer, and the connection of the lateral force coefficient test equipment. Ball joint 21, test wheel 22, distance measuring wheel 23, various sensors, water storage and sprinkler system, control system and data acquisition and processing system. The following points should be paid attention to when transforming the pavement lateral force coefficient test equipment: it does not affect the various functions of the test equipment; the equipment is easy to operate and runs safely; the modification plan is simple and easy to disassemble. In this regard, the operating area selected in this embodiment is mainly the center area of the road surface and the left and right wheel track belts without tires; and for the location of the transformation of the CFT test vehicle, the connection ball joint and connection mainly reserved for the CFT test vehicle are selected. The position height is modified to match the mounting position of the loading device.

The connecting assembly designed in this embodiment has the following characteristics: beautiful and durable, and the structural strength meets the experimental requirements; there are multiple test equipment installation positions, which can meet the selected data acquisition area; the construction integration is high, and it is easy to disassemble. It can be transformed from angle steel parts, steel pipe parts, shaped steel parts and various organic and inorganic material parts. Of course, it can be understood that this embodiment does not limit the type and material of the connecting components.

Based on the above, as shown in FIGS. 2 to 7 , the full-scale pavement acceleration loading device with the pavement lateral force coefficient testing function provided in this embodiment includes a full-scale pavement acceleration loading device body 1 , lateral force coefficient testing equipment 2 and connecting components 3; wherein, the full-scale road surface acceleration loading device body 1 includes a full-scale road surface acceleration loading device axle 11 , and the lateral force coefficient testing device includes a lateral force coefficient testing device 2 is connected to the spherical joint 21 .

The connecting assembly 3 includes a first connecting member 31, a second connecting member 32 and a third connecting member 33; wherein, the first connecting member 31 is connected with the axle 11 of the full-scale road acceleration loading device, and the second connecting member 32 is connected with the first connecting member 31. The third connecting piece 33 is connected with the second connecting piece 32 , and the third connecting piece 33 is arranged horizontally.

As an example, as shown in FIG. 6 and FIG. 7 , the number of the first connecting members 31 is multiple, and the multiple first connecting members 31 are symmetrically distributed on both sides of the axle 11 of the full-scale road acceleration loading device. The number of the second connecting members 32 is plural, and a second connecting member 32 is respectively connected to the first connecting member 31 on each side of the axle 11 of the full-scale road acceleration loading device. The third connecting piece 33 is provided with a plurality of mounting holes 34 along the length direction of the third connecting piece 33. The lateral force coefficient testing device connects the ball hinge 21 and any one of the mounting holes 34 in a detachable connection. And select the bolts with the strength up to the standard for fixing, which can provide multiple installation positions for the detection equipment, so as to provide the multi-position detection capability of the road surface. Among them, the length of the part is determined by the size of the axle of the loading device, and the installation position of the test vehicle is reserved when opening the hole, and the installation position is determined by the wheel track area.

Compared with the single-function full-scale road acceleration loading device, the integration of the lateral force coefficient testing device into the loading device in this embodiment has certain practical significance and scientific research value: the integrated lateral force coefficient testing device can accelerate loading on the full-scale road surface. After the device is loaded for a certain number of times, the lateral force coefficient of the road surface can be detected at any time. Multiple installation positions of the detection equipment can provide multi-position detection capabilities of the road surface. Therefore, the integrated transformation of the pavement lateral force coefficient test function in this embodiment is of great help to improve the pavement performance detection capability of the overall device, and at the same time, it can solve the compatibility problem between the lateral force coefficient test equipment and the loading device, simplify the relevant experimental steps and Equipment use, reduce the installation, debugging and maintenance of test equipment in related tests, reduce test costs, improve test safety, and promote the study of the impact of pavement acceleration loading on pavement lateral force coefficients.

The pavement lateral force coefficient test test that can be performed by the full-scale pavement acceleration loading device with the pavement lateral force coefficient test function in this embodiment includes but is not limited to the influence of different axle loads on the pavement lateral force coefficient within a fixed number of loading times, the fixed axis The influence of different loading times on the lateral force coefficient of the pavement, the influence of different tire types on the lateral force coefficient of the pavement, the variation of the lateral force coefficient of the pavement under different working conditions with different pavement materials and structures, the lateral force coefficient of the pavement at different positions under each working condition Changes in the force coefficient.

To sum up, in this embodiment, by integrating and transforming the full-scale pavement acceleration loading device and the pavement lateral force coefficient testing equipment, the lateral force coefficient test in the pavement accelerated loading test can be conveniently obtained, which fills the gap between the full-scale pavement acceleration loading device and the road surface. blank in this area. At the same time, the invention also simplifies the follow-up test process, reduces equipment investment, installation, debugging and post-maintenance, and improves the test safety.

Furthermore, it should be noted that herein, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these entities or operations There is no such actual relationship or order between them. The terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or terminal that includes a list of elements includes not only those elements, but also not expressly listed Other elements, or elements that are inherent to such a process, method, article or end device. Without further limitation, an element defined by the phrase "comprises a..." does not preclude the presence of additional identical elements in the process, method, article or terminal device comprising said element.

Finally, it should be noted that the above are the preferred embodiments of the present invention. It should be pointed out that although the preferred embodiments of the present invention have been described, for those skilled in the art, once the basic inventive concept of the present invention is known , without departing from the principles of the present invention, several improvements and modifications can also be made, and these improvements and modifications should also be regarded as the protection scope of the present invention. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications that fall within the scope of the embodiments of the present invention.

Claims (7)

1. a full-scale pavement acceleration loading device with a pavement lateral force coefficient testing function, is characterized in that, comprises a full-scale pavement acceleration loading device body, lateral force coefficient testing equipment and connecting assembly; Wherein, The full-scale road surface acceleration loading device body includes a full-scale road surface acceleration loading device axle, and the lateral force coefficient testing device includes a lateral force coefficient testing device connecting spherical hinges; The connecting assembly includes a first connecting piece, a second connecting piece and a third connecting piece; wherein the first connecting piece is connected with the axle of the full-scale road acceleration loading device, and the second connecting piece is connected with the The first connecting piece is connected, the third connecting piece is connected with the second connecting piece, and the third connecting piece is arranged horizontally, and the lateral force coefficient testing device is connected with the ball hinge and the third connecting piece. 2 . The full-scale pavement acceleration loading device with a pavement lateral force coefficient testing function according to claim 1 , wherein the full-scale pavement acceleration loading device body is an annular pavement acceleration loading device. 3 . 3 . The full-scale pavement acceleration loading device with a pavement lateral force coefficient testing function as claimed in claim 2 , wherein the lateral force coefficient testing device is a CFT continuous pavement friction coefficient tester. 4 . 4 . The full-scale road surface acceleration loading device with the function of testing the lateral force coefficient of the road surface according to claim 1 , wherein the number of the first connecting parts is multiple, and the plurality of the first connecting parts are symmetrically distributed. 5 . Accelerate both sides of the axle of the loading device on the full-scale road surface. 5. The full-scale pavement acceleration loading device with a pavement lateral force coefficient testing function as claimed in claim 4, wherein the number of the second connecting members is multiple, and the full-scale pavement acceleration loading device axle The first connecting piece on each side is connected with the second connecting piece respectively. 6 . The full-scale road surface acceleration loading device with the function of testing the lateral force coefficient of the road surface according to claim 5 , wherein the third connecting member is provided with a plurality of An installation hole, and the lateral force coefficient testing device is detachably connected to any of the installation holes by connecting the ball hinge. 7 . The full-scale road surface acceleration loading device with the function of testing the lateral force coefficient of the road surface according to any one of claims 1 to 6 , wherein the connecting component is made of angle steel, section steel or steel pipe fittings. 8 .

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