Lightweight foam soil compression testing device and construction method based on temperature-stress

Abstract

The present invention discloses a lightweight foam soil compression test device based on temperature-stress and a construction method thereof, comprising a vehicle base, a universal wheel connected to the bottom of the vehicle base, a control rod connected to the vehicle base and away from the road surface, a laser locator connected to the vehicle base and close to the road surface, a monitoring assembly connected to the vehicle body above the vehicle base, a slewing mechanism connected between the vehicle body and the monitoring assembly, and a combined rod connected to the monitoring assembly and close to the road surface. The present invention facilitates in-situ measurement of drilling and temperature through the design of the detection device, and converts temperature and stress through the monitoring assembly to obtain the strength of each detection point; through the setting of the telescopic rod, it is convenient to set multiple points in a row, and then can be processed in large quantities, saving construction time; through the joint setting of the telescopic rod connector, the operating rod and the conversion joint, the double operation of the drill bit and the temperature sensor can be performed, which is convenient for alternating construction.

Description

Technical Field

[0001] The invention belongs to the technical field of road construction, and in particular relates to a temperature-stress-based lightweight foam soil compression resistance detection device and a construction method. Background Art

[0002] For some areas on site where a large amount of lightweight foam soil is used, the construction period is tight and the volume is large, and the layered skipping method is often used for construction. There has been no clear limit on how long it takes for the next layer to be used as the working surface of the previous layer after pouring. It is simply operated according to the 8-hour specification. Therefore, it is very necessary to choose a suitable in-situ detection method to measure the compressive strength of lightweight foam soil.

[0003] There is no corresponding testing method in the current specification. On-site testing is usually carried out by drilling holes and then sending them to the test site; or the displacement caused by the weight of a small ball falling on the surface of lightweight foam soil is used for measurement. However, these two methods are mostly used for measurement at the edge of horizontal structures, and are not suitable for measuring the insulation layer of large areas and rooms. Summary of the invention

[0004] The present invention provides a temperature-stress based lightweight foam soil compression testing device and construction method, which are used to solve technical problems such as in-situ drilling and temperature testing of large-area lightweight foam soil, large-scale one-time testing, and testing device design.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A temperature-stress-based lightweight foam soil compression testing device comprises a vehicle base, a universal wheel connected to the bottom of the vehicle base, a control rod connected to the vehicle base and away from the road surface, a laser locator connected to the vehicle base and close to the road surface, a vehicle body disposed above the vehicle base and connected to a monitoring component above, a slewing mechanism connecting the vehicle body and the monitoring component, and a combined rod connected to the monitoring component and close to the road surface;

[0007] The combined rod comprises a telescopic rod, an operating rod connected to the telescopic rod at intervals, and a drill bit and / or a sensor detachably connected to the bottom end of the operating rod;

[0008] The telescopic rod is a hollow rod, and a line is passed through the hollow rod, and the line is correspondingly connected to the drill bit and / or the sensor.

[0009] Furthermore, a vehicle control screen is also arranged on the vehicle base, and the vehicle control screen is connected to one side of the control rod; the vehicle control screen is arranged corresponding to the universal wheel travel; and a level bubble is also arranged on the vehicle base.

[0010] Furthermore, the laser locator is detachably connected to the middle part of the vehicle base on the side close to the road surface, and the laser locator is connected to the vehicle control screen.

[0011] Furthermore, the vehicle body is columnar or box-shaped, a vehicle control screen is installed on the side of the vehicle body away from the road surface, and a slewing mechanism is rotatably connected to the top of the vehicle body.

[0012] Furthermore, the monitoring component is fixedly connected to the rotating mechanism, and the monitoring component includes a monitoring room and a sensor line connection end connected to the inside of the monitoring room; a control panel is installed on the monitoring room, and a vertical movable end is installed on the side of the monitoring room close to the road surface.

[0013] Furthermore, the vertical movable end includes a vertical sliding track and can be vertically slidably connected to a telescopic rod, the telescopic rod is an electric segmented telescopic rod, and a circuit is connected inside the telescopic rod, and the circuit includes a drill bit connection line and a sensor line connection line; one end of the drill bit connection line is connected to the drill bit, and the other end is connected to a monitoring component; one end of the sensor line connection line is connected to a temperature sensor, and the other end is connected to a monitoring component.

[0014] Furthermore, at least one operating rod is provided on each section of the telescopic rod, and the operating rod is connected to the telescopic rod through a telescopic rod connector; the telescopic rod connector is made integrally with the telescopic rod, and the telescopic rod adjacent to the monitoring component is connected to the vertical movable end through a segment connector.

[0015] Furthermore, the operating rod includes an operating main rod, a conversion joint connected between the operating main rod and the telescopic rod connector, and a drill bit or a sensor detachably connected to the bottom end of the operating main rod.

[0016] Furthermore, there are two operating main rods, one bottom end of which is connected to the drill bit and the other bottom end of which is connected to the sensor. The tops of the two operating main rods are detachably connected to the conversion joint, and the conversion joint is rotatably connected to the telescopic rod connector.

[0017] Furthermore, the construction method of the temperature-stress based lightweight foam soil compression testing device has the following specific steps:

[0018] Step 1: deepen the road surface to be tested, mark the drilling and temperature test points on the CAD drawing, and mark the temporary test point on one side of the road surface according to the test point translation, and use the temporary test point as a temporary test station; thereby leveling or hardening the ground at the test station;

[0019] Step 2: According to the number of the widest row of detection points on the road surface, a telescopic rod is made, and each detection point corresponds to a section of the telescopic rod; a telescopic rod connector is integrally made on each section of the telescopic rod; the telescopic rod connector is equipped with a single or double operating rod;

[0020] Step 3: Move the detection device to the temporary detection station by the control lever under the joint command of the vehicle control panel and the laser locator on the vehicle base, and then lock the universal wheels and level the vehicle base;

[0021] Step 4: Rotate the vertical moving end of the monitoring component to be parallel to the road surface through the slewing mechanism, and then install the line, end connector, telescopic rod and operating rod;

[0022] Step 5: When a single operating rod is used, the drill bit is installed for the first time. The drill bit is first rotated by the automatic slewing mechanism and the vertical moving end is aligned with the detection point to drill a hole. Then the operating rod is rotated parallel to the road surface to replace the operating rod. The replaced operating rod is connected to the temperature sensor and then the temperature is measured. The double operating rods are respectively equipped with a drill bit and a temperature sensor. The drilling is first performed by the self-rotation of the conversion joint, and then the temperature is measured in situ.

[0023] Step 6. The data sent back by the temperature sensor is combined with the corresponding pipeline of the relationship between hydration heat temperature-time and intensity-time in the monitoring component to obtain the intensity value of a row of detection points; this intensity value is directly displayed on the external display screen of the monitoring component.

[0024] The beneficial effects of the present invention are embodied in:

[0025] 1) The present invention facilitates in-situ measurement of drilling and temperature through the design of the detection device, and on the other hand, converts temperature and stress through the monitoring component to obtain the strength of each detection point, thereby ensuring in-situ measurement of strength;

[0026] 2) The present invention facilitates the arrangement of multiple points in rows through the arrangement of telescopic rods, thereby enabling large-scale processing and saving construction time;

[0027] 3) The present invention can perform dual operations of the drill bit and the temperature sensor through the joint arrangement of the telescopic rod connector, the operating rod and the conversion joint, which is convenient for alternate construction;

[0028] 4) In addition, the slewing mechanism, universal wheels and laser positioner are combined to achieve precise positioning and convenient movement.

[0029] Other features and advantages of the present invention will be set forth in the following description, and in part will become apparent from the description, or may be understood by practicing the present invention; the main purpose and other advantages of the present invention may be realized and obtained through the solutions particularly pointed out in the description. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the structure of a lightweight foam soil compression testing device based on temperature-stress;

[0031] Figure 2 It is a schematic diagram of the connection between the telescopic rod and the operating rod.

[0032] Figure markings: 1-vehicle base, 2-universal wheel, 3-control lever, 4-vehicle body, 5-vehicle control screen, 6-rotating mechanism, 7-monitoring component, 8-vertical moving end, 9-end connector, 10-circuit, 101-drill bit connection, 102-sensor line connection, 11-telescopic rod, 12-operating rod, 121-conversion joint, 122-operating main rod, 123-drill bit, 13-road surface, 14-telescopic rod connector, 15-laser locator. DETAILED DESCRIPTION

[0033] Taking a certain intelligent connected vehicle test site project as an example, the project is located on the banks of Dongjing River, with a planned land area of ​​approximately 1,313 mu. The main construction contents include high-speed and extreme performance test area, extreme environment test area, urban traffic scene test area, rural traffic scene test area, automatic parking test area, mountain road simulation test area, multi-functional test area (virtual test square), high-speed ramp scene test area, extreme racing test area, etc.

[0034] The test road meets the national closed test field standard and specification requirements, and combined with the actual needs of future operations, it has been built into a first-class domestic closed test site that can test passenger cars and commercial vehicles (including 20-ton trucks) at the same time. The test system meets the national closed test field standard and specification requirements, benchmarks the top domestic test sites, and makes full use of advanced technologies such as big data, artificial intelligence, 5G, edge computing, and parallel driving to build the most technologically advanced and functionally complete intelligent connected vehicle test system in China, with autonomous driving test functions, ADAS test functions, V2X test functions, and extreme test functions.

[0035] A large amount of lightweight foam soil was used in some areas of the project site, but due to the tight construction schedule and large volume, the construction was carried out using the layered skipping method. There was no clear limit on how long it would take for the next layer to be used as the working surface of the previous layer, and the operation was simply based on the 8-hour rule. Therefore, it was necessary to select a suitable in-situ testing method to measure the compressive strength of lightweight foam soil.

[0036] According to the mechanism that hydration heat is generated when cement is present in the mix of lightweight foam soil, the temperature-compressive strength curve is obtained by calculating the relationship between the hydration heat temperature-time and the strength-time at each point of the lightweight foam soil and inputting it into the test system. During the in-situ test, the temperature measured by the front-end probe directly displays the compressive strength value.

[0037] like Figure 1 and Figure 2As shown, a lightweight foam soil compression test device based on temperature-stress comprises a vehicle base 1, a universal wheel 2 connected to the bottom of the vehicle base 1, a control rod 3 connected to the vehicle base 1 and away from the road surface 13, a laser locator 15 connected to the vehicle base 1 and close to the road surface 13, a vehicle body 4 arranged above the vehicle base 1 and connected to the monitoring component 7 above, a slewing mechanism 6 connected between the vehicle body 4 and the monitoring component 7, and a combined rod connected to the monitoring component 7 and close to the road surface 13. The combined rod comprises a telescopic rod 11, an operating rod 12 connected to the telescopic rod 11 at intervals, and a drill bit 123 and / or a sensor detachably connected to the bottom end of the operating rod 12;

[0038] In this embodiment, the telescopic rod 11 is a hollow steel rod, and a line 10 is inserted into the hollow rod, and the line 10 is correspondingly connected to the drill bit 123 and / or the sensor. The telescopic rod 11 can be automatically extended and retracted.

[0039] In this embodiment, a vehicle control screen 5 is also provided on the vehicle base 1, and the vehicle control screen 5 is connected to one side of the control rod 3; the vehicle control screen 5 is arranged corresponding to the travel of the universal wheel 2; and a level bubble is also provided on the vehicle base 1. After the universal wheel 2 is braked in place, the level bubble temporarily supports and adjusts the vehicle base 1 to accurately position it in the horizontal direction.

[0040] In this embodiment, the laser locator 15 is threadedly connected to the middle of the vehicle base 1 near the road surface 13, and the laser locator 15 is connected to the vehicle control screen 5. When in use, the line connecting the detection points of the road surface 13 is extended to set up a reflector for accurate application of the laser locator 15 to ensure that the overall position of the device is accurate.

[0041] In this embodiment, the vehicle body 4 is a columnar or box-shaped steel member, a vehicle control screen 5 is installed on the side of the vehicle body 4 away from the road surface 13, and a slewing mechanism 6 is rotatably connected to the top of the vehicle. The slewing mechanism 6 is automatically controlled and controlled by the vehicle control screen 5.

[0042] In this embodiment, the monitoring assembly 7 is fixedly connected to the slewing mechanism 6, and the monitoring assembly 7 includes a monitoring room and a sensor line connection end connected to the inside of the monitoring room; a control panel is installed on the monitoring room, and a vertical movable end 8 is installed on the side of the monitoring room adjacent to the road surface 13. The vertical movable end 8 includes a vertical sliding track and can be vertically slidably connected to the telescopic rod 11, and the telescopic rod 11 is an electric segmented telescopic rod 11, and a line 10 is connected inside the telescopic rod 11, and the line 10 includes a drill bit 123 connection line 101 and a sensor line connection line 102; one end of the drill bit 123 connection line 101 is connected to the drill bit 123, and the other end is connected to the monitoring assembly 7; one end of the sensor line connection line 102 is connected to the temperature sensor, and the other end is connected to the monitoring assembly 7.

[0043] In this embodiment, at least one operating rod 12 is provided on each telescopic rod 11, and the operating rod 12 is connected to the telescopic rod 11 through a telescopic rod connector 14; the telescopic rod connector 14 is made integrally with the telescopic rod 11, and the telescopic rod 11 adjacent to the monitoring component 7 is connected to the vertical movable end 8 through a segment connector.

[0044] In this embodiment, the operating rod 12 includes a steel hollow operating main rod 122, a conversion joint 121 connected between the operating main rod 122 and the telescopic rod connector 14, and a drill bit 123 or a sensor detachably connected to the bottom end of the operating main rod 122. The conversion joint 121 corresponds to the docking of different lines 10 and / or ensures self-rotation.

[0045] In this embodiment, there are two operating main rods 122, one bottom end of which is connected to the drill bit 123 and the other bottom end is connected to the sensor. The tops of the two operating main rods 122 are detachably connected to the conversion joint 121, and the conversion joint 121 is rotatably connected to the telescopic rod connector 14.

[0046] Combination Figure 1 to Figure 2 , further illustrating the construction method of the lightweight foam soil compression testing device based on temperature-stress, the specific steps are as follows:

[0047] Step 1: deepen the road surface 13 to be tested, mark the drilling and temperature testing points on the CAD drawing, and mark the temporary testing points on one side of the road surface 13 according to the translation of the testing points, and use the temporary testing points as temporary testing stations; thereby leveling or hardening the ground at the testing stations.

[0048] Step 2: According to the number of the widest row of detection points on the road surface 13 , a telescopic rod 11 is manufactured, and each detection point corresponds to a section of the telescopic rod 11 ; a telescopic rod connector 14 is integrally manufactured on each section of the telescopic rod 11 ; and the telescopic rod connector 14 is equipped with a single or double operating rod 12 .

[0049] Step 3: Move the detection device to the temporary detection station by the control rod 3 under the joint command of the vehicle control panel 5 and the laser locator 15 on the vehicle base 1, and then lock the universal wheel 2 and level the vehicle base 1.

[0050] Step 4: Rotate the vertical movable end 8 on the monitoring assembly 7 to be parallel to the road surface 13 through the slewing mechanism 6, and then install the line 10, the end connector 9, the telescopic rod 11 and the operating rod 12.

[0051] Step 5, when a single operating rod 12 is used, the drill bit 123 is installed for the first time. The automatic rotating mechanism 6 is used to rotate and the vertical moving end 8 is used to align with the detection point for drilling. Then the parallel road surface 13 is rotated to replace the operating rod 12. The replaced operating rod 12 is connected to the temperature sensor and then the temperature is measured. The double operating rods 12 are respectively installed with the drill bit 123 and the temperature sensor. The drilling is first performed by the self-rotation of the conversion joint 121, and then the in-situ temperature measurement is performed.

[0052] Step 6. The data sent back by the temperature sensor is combined with the corresponding pipelines of the relationship between hydration heat temperature-time and intensity-time in the monitoring component 7 to obtain the intensity values ​​of a row of detection points; this intensity value is directly displayed on the external display screen of the monitoring component 7.

[0053] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that a technician familiar with the technical field can think of within the technical scope disclosed in the present invention should be covered within the protection scope of the present invention.

Claims

1. A lightweight foam soil compression test device based on temperature-stress, characterized in that: A chartered vehicle base (1), a universal wheel (2) connected to the bottom of the vehicle base (1), a control rod (3) connected to the vehicle base (1) and on a side away from a road surface (13), a laser locator (15) connected to the vehicle base (1) and on a side close to the road surface (13), a vehicle body (4) arranged above the vehicle base (1) and connected to a monitoring component (7) above, a slewing mechanism (6) connected between the vehicle body (4) and the monitoring component (7), and a combined rod connected to the monitoring component (7) and on a side close to the road surface (13); The combined rod member comprises a telescopic rod (11), an operating rod (12) connected to the telescopic rod (11) at intervals, and a drill bit (123) and / or a sensor detachably connected to the bottom end of the operating rod (12); The telescopic rod (11) is a hollow rod, a line (10) is passed through the hollow rod, and the line (10) is correspondingly connected to the drill bit (123) and / or the sensor; The vehicle base (1) is also provided with a vehicle control screen (5), which is connected to one side of the control rod (3); the vehicle control screen (5) is arranged corresponding to the travel of the universal wheel (2); and a level bubble is also provided on the vehicle base (1); The monitoring assembly (7) is fixedly connected to the rotary mechanism (6), and the monitoring assembly (7) comprises a monitoring room and a sensor line connection terminal connected to the inside of the monitoring room; a control panel is installed on the monitoring room, and a vertical moving end (8) is installed on the side of the monitoring room adjacent to the road surface (13); The vertical movable end (8) comprises a vertical sliding track and can be vertically slidably connected to a telescopic rod (11); the telescopic rod (11) is an electric segmented telescopic rod (11); a circuit (10) is connected inside the telescopic rod (11); the circuit (10) comprises a drill bit (123) connection line (101) and a sensor line connection line (102); one end of the drill bit (123) connection line (101) is connected to the drill bit (123), and the other end is connected to a monitoring component (7); one end of the sensor line connection line (102) is connected to a temperature sensor, and the other end is connected to the monitoring component (7); At least one operating rod (12) is provided on each section of the telescopic rod (11); the operating rod (12) is connected to the telescopic rod (11) via a telescopic rod connector (14); the telescopic rod connector (14) and the telescopic rod (11) are integrally manufactured, and the telescopic rod (11) adjacent to the monitoring component (7) is connected to the vertical movable end (8) via a segment connector; The operating rod (12) comprises an operating main rod (122), a conversion joint (121) connected between the operating main rod (122) and the telescopic rod connector (14), and a drill bit (123) or a sensor detachably connected to the bottom end of the operating main rod (122); There are two operating main rods (122), one bottom end of which is connected to the drill bit (123) and the other bottom end of which is connected to the sensor. The tops of the two operating main rods (122) are detachably connected to the conversion joint (121), and the conversion joint (121) is rotatably connected to the telescopic rod connector (14).

2. The temperature-stress based lightweight foam soil compression testing device according to claim 1, characterized in that: The laser locator (15) is detachably connected to the middle portion of a side of the vehicle base (1) close to the road surface (13), and the laser locator (15) is connected to the vehicle control screen (5).

3. The temperature-stress based lightweight foam soil compression testing device according to claim 1, characterized in that: The vehicle body (4) is columnar or box-shaped, a vehicle control screen (5) is installed on the side of the vehicle body (4) away from the road surface (13), and a slewing mechanism (6) is rotatably connected to the top of the vehicle body.

4. A construction method for a temperature-stress based lightweight foam soil compression testing device according to any one of claims 1 to 3, characterized in that: The specific steps are as follows: Step 1: deepen the road surface (13) to be tested, mark the drilling points and temperature test points on the CAD drawing, and mark the temporary test points on one side of the road surface (13) according to the translation of the test points, and use the temporary test points as temporary test stations; thereby leveling or hardening the ground at the test stations; Step 2: manufacturing a telescopic rod (11) according to the number of the widest row of detection points on the road surface (13), and each detection point corresponds to a section of the telescopic rod (11); manufacturing a corresponding telescopic rod connector (14) on each section of the telescopic rod (11); and the telescopic rod connector (14) is equipped with a single or double operating rod (12); Step 3: Move the detection device to a temporary detection station by the control lever (3) under the joint command of the vehicle control panel (5) and the laser locator (15) on the vehicle base (1), and then lock the universal wheel (2) and level the vehicle base (1); Step 4: Rotate the vertical movable end (8) of the monitoring assembly (7) to be parallel to the road surface (13) through the slewing mechanism (6), and then install the line (10), the end connector (9), the telescopic rod (11) and the operating rod (12); Step 5: When a single operating rod (12) is used, the drill bit (123) is installed for the first time, and the hole is first drilled by rotating the automatic rotating mechanism (6) and aligning the vertical moving end (8) with the detection point, and then rotating the parallel road surface (13) to replace the operating rod (12). The replaced operating rod (12) is connected to the temperature sensor and then the temperature is measured; the double operating rod (12) is respectively installed with the drill bit (123) and the temperature sensor, and the hole is first drilled by the self-rotation of the conversion joint (121), and then the temperature is measured in situ; Step 6: The data transmitted back by the temperature sensor is combined with the corresponding pipeline of the relationship between hydration heat temperature-time and intensity-time in the monitoring component (7) to obtain the intensity value of a row of detection points; this intensity value is directly displayed on the external display screen of the monitoring component (7).

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