A lifting-free static load reaction system and its operation method

Abstract

The present invention discloses a lifting-free static load reaction force system and its operation method. The system consists of a barn-type self-propelled static load vehicle, a magnetic transport pipeline, a transport vehicle and a portable displacement detection reference bracket. The two ends of the magnetic transport pipeline are movably connected to the transport vehicle and the barn-type self-propelled static load vehicle, and are driven by a motor to transport steel balls in a direction by electromagnetic force. The barn-type self-propelled static load vehicle is provided with a central sunken warehouse body. The bottom end of the warehouse body serves as the center of gravity of the counterweight and coincides with the coaxial line of the jack and the foundation pile. The warehouse body is stacked with steel balls or emptied according to the reaction force counterweight requirement. Its operation method mainly includes test pit pretreatment, static load vehicle positioning and centering, directional transportation of steel balls to fill the warehouse body or clear the warehouse, and exit. The application of this lifting-free static load reaction force system reduces the weight platform area and stacking height, improves the convenience of transportation, saves the use of large vehicles and equipment, enhances the adaptability to site conditions, and improves the reliability of static load test results.

Description

Technical Field

[0001] The present invention relates to a system for static load testing of foundation of infrastructure construction, and in particular to a small-tonnage static load reaction force system without hoisting and an operating method thereof, belonging to the field of testing equipment. Background Art

[0002] With the rapid development of the national economy, infrastructure construction is also being carried out in full swing. Whether it is road construction, various commercial and residential buildings, tower construction, airport and station construction, or other large-scale land use, traditional foundations require static load testing using multi-point sampling to assess their compaction level and ensure the structural strength of subsequent buildings.

[0003] However, when conducting the static load test, the traditional reaction force weight platform is complicated to set up and has poor stability. The process is accompanied by the risk of energy consumption, environmental pollution and many safety hazards. The specific manifestations and objective reasons are analyzed one by one as follows.

[0004] 1) The concrete blocks and steel beams used in the test were heavy, so transporting them from the warehouse to the test site required renting a heavy-duty flatbed truck. The hoisting of the concrete blocks and the erection of the steel beams required the cooperation of a crane, which also involved the full participation of a crane driver and a rigger, resulting in a high test cost.

[0005] 2) After completing the inspection work at one inspection point, it is necessary to use a flatbed truck to transport the concrete and steel beams to the next inspection point, or use a crane to transfer the steel beam counterweights piece by piece. If the site has insufficient endurance and is uneven, the transfer process of the truck and crane will be very difficult and time-consuming.

[0006] 3) Crane operations need to meet certain space requirements. When testing needs to be carried out in a small area or inside an existing building, it is difficult to use the traditional stacking method to provide reaction force for static load testing.

[0007] 4) The installation process of the counterweight platform is rather complicated and depends on the experience and sense of responsibility of the crane driver and the rigging worker, as well as the bending stiffness of the steel beam, the specifications of the concrete counterweight, the matching of the steel beam and the counterweight, the integrity of the platform, and the control of the center of gravity. These factors all have different degrees of impact on the static load test results.

[0008] 5) During the lifting operation, the coordination of time, place and people is required, which increases the susceptibility of safety accidents.

[0009] 6) Most large vehicles and equipment such as flatbed trucks and cranes use diesel during operation, which consumes a large amount of energy and produces a large amount of environmentally polluting gases, which is not in line with the environmental protection policy of promoting energy conservation and low-carbon emission reduction. Summary of the Invention

[0010] The purpose of the present invention is to propose a lifting-free static load reaction system and an operation method thereof, so as to solve the problems of complex static load reaction counterweight operation process, high energy consumption and pollution safety risks.

[0011] The technical solution of the present invention to achieve one of the above-mentioned purposes is a static load reaction force system that does not require lifting, which is characterized by being composed of a barn-type self-propelled static load vehicle, a magnetic transport pipeline, a transport vehicle and a portable displacement detection reference bracket, wherein the displacement monitoring reference bracket includes a pressure plate laid on the top of the foundation pile and a jack with the pushing surface facing upwards and mounted on the pressure plate, the transport vehicle is provided with a carriage for carrying steel balls, the two ends of the magnetic transport pipeline are movably docked with the transport vehicle and the barn-type self-propelled static load vehicle, and are driven by a motor to transport steel balls in a directional manner by electromagnetic force, the barn-type self-propelled static load vehicle is provided with a central sunken warehouse body, the bottom end of the warehouse body serves as the center of gravity of the counterweight and coincides with the coaxial line of the jack and the foundation pile, and the steel balls are accumulated or emptied in the warehouse body according to the reaction counterweight requirements.

[0012] The above-mentioned static load reaction force system that does not require lifting is further configured such that more than one transport vehicle is configured corresponding to its own load capacity, and the total weight of the steel balls carried by all transport vehicles meets the reaction force counterweight requirement.

[0013] The above-mentioned static load reaction system that does not require lifting, further, the upper part of the warehouse body of the barn-type self-propelled static load vehicle is set to be cylindrical, and the lower part is set to be an inverted frustum, the entire warehouse body is attached to the vehicle body bracket through a number of round tube legs evenly distributed around it, and the bottom end of the warehouse body passes through the bottom side of the vehicle body bracket and contacts the pushing surface of the jack; the side wall of the warehouse body is provided with an interface for docking the magnetic transport pipeline.

[0014] The above-mentioned lifting-free static load reaction system, further, the barn-type self-propelled static load vehicle is provided with a crawler unit or an off-road wheel assembly for walking and positioning.

[0015] The above-mentioned static load reaction system that does not require lifting, further, the magnetic transport pipeline is configured as a curved pipe with the main body laid flat on the ground and the two ends partially raised to dock with a transport vehicle or a barn-type self-propelled static load vehicle, and the docking direction of the pipe mouth is flexibly adjustable; and the magnetic transport pipeline is provided with a motor, a magnetic accelerator and a controller with corresponding output counterweight parameters, and the steel ball is accelerated by electromagnetic force to roll in a directional manner in the magnetic transport pipeline and overcome its own weight in some positions.

[0016] The technical solution of the present invention to achieve the above-mentioned another object is a method for operating a static load reaction force system without hoisting, which is implemented based on the aforementioned static load reaction force system and is characterized by comprising:

[0017] S1. Pre-treat the foundation pile embedding point by excavating and leveling a test pit, lay a pressure plate at the bottom of the pit and install a jack with the jack's pushing surface facing upwards;

[0018] S2. Drive the barn-type self-propelled static load vehicle to the upper side of the test pit and adjust the position so that the center of gravity of the bottom of the barn coincides with the coaxial line of the jack and the foundation pile;

[0019] S3. Drive the transport vehicle carrying the steel balls to the vicinity of the barn-type self-propelled static load vehicle, remove the magnetic transport pipe and connect the two ends to the transport vehicle and the barn-type self-propelled static load vehicle respectively, set the number of output steel balls according to the reaction force counterweight requirement and start the motor. Use electromagnetic force to accelerate the steel balls in the transport vehicle one by one and roll them into the warehouse body until the tonnage requirement of the reaction force counterweight is reached. Then turn off the motor, disconnect the connected magnetic transport pipe and close the interface to complete the reaction force counterweight of one static load test point;

[0020] S4. After the static load test is completed, the transport vehicle is driven close to the barn-type self-propelled static load vehicle, and the magnetic transport pipe is re-connected between the two vehicles. After setting the number of unloading steel balls, the motor is started, and the steel balls in the bin are accelerated one by one by electromagnetic force and rolled back into the carriage of the transport vehicle until the bin is empty. After that, the motor is turned off, the connected magnetic transport pipes are disconnected, and the two vehicles are allowed to exit the site separately.

[0021] The above-mentioned method for operating a static load reaction force system without lifting, further, the load capacity of the transport vehicle itself is less than the reaction force counterweight requirement, in S3, when all the steel balls carried by a transport vehicle are delivered to the warehouse body, the motor is paused, and then the magnetic transport pipeline is operated to switch and connect to another transport vehicle, the motor is restarted and the steel balls are continued to be transported to the warehouse body. If the second transport vehicle can meet the reaction force counterweight requirement, the motor is turned off after the tonnage requirement is reached. If the second transport vehicle cannot meet the reaction force matching requirement, the operation of pausing the motor, switching the transport vehicle, and restarting the motor is repeated until the total weight of the steel balls input into the warehouse body by all transport vehicles reaches the tonnage requirement and the motor is turned off.

[0022] The above-mentioned method for operating the static load reaction system without lifting is further characterized in that there are more than two static load test points, and a barn-type self-propelled static load vehicle and a set of displacement detection reference brackets are configured for each static load test point, and operations S1 to S4 are performed in sequence for each static load test point, and batch synchronous testing is performed.

[0023] The above-mentioned method for operating the hoist-free static load reaction system further comprises the following steps: the static load test points are two or more, and two barn-type self-propelled static load vehicles and two sets of displacement detection reference brackets are configured. For the first static load test point, the operations S1 to S3 are executed to conduct a separate test;

[0024] S5. During the execution of S1 to S3 or after the first static load test point is completed, pre-treat the pile embedding point at the second static load test point by excavating and leveling the test pit, and lay a pressure plate at the bottom of the pit and install a jack with the jack's pushing surface facing upwards;

[0025] S6. Refer to the operation in S2 and position another barn-type self-propelled static load vehicle at the second static load test point;

[0026] S7. After the first static load test point is completed, the magnetic transport pipe is docked with two barn-type self-propelled static load vehicles, and the motor is started to transfer all the steel balls in the bin corresponding to the first static load test point to the bin of the second static load test point through electromagnetic force, completing the reaction force counterweight of the second static load test point and starting the test;

[0027] S8. Refer to the operations of S5 to S7 and test the remaining static load test points separately in sequence until all static load test points have completed the test. Then refer to the operations of S4 to release the reaction weight and make the transport vehicle and barn-type self-propelled static load vehicle exit the site respectively.

[0028] The application of the hoist-free static load reaction system and its operation method of the present invention has the following significant improvements:

[0029] 1) Using steel balls with a higher stacking density as counterweights increases the static load per unit volume, thereby reducing the weight platform area and stacking height, and also reduces the bending stiffness requirements for the steel beam.

[0030] 2) Using steel balls as bulk materials improves the convenience of transportation. The magnetic transport pipe enables the steel balls to flow freely between the transport vehicle and the static load bin, and the steel ball counting function is used to obtain accurate reaction force counterweight tonnage, while eliminating the need for large vehicles and equipment such as flatbed transport vehicles and cranes.

[0031] 3) The design and use of a barn-type self-propelled static load vehicle improves the weight platform's ability to move and position in different site conditions. By aligning the bottom of the warehouse with the test object, the load of the upper reaction weight can be effectively transferred downward, improving the reliability of the static load test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a front view structural schematic diagram of a preferred embodiment of the hoisting-free static load reaction system of the present invention. DETAILED DESCRIPTION

[0033] The specific implementation methods of the present invention will be further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp, thereby making a clearer definition of the protection scope of the present invention.

[0034] In view of the objective reality that traditional static load tests on foundations are subject to many inconveniences, severe energy consumption, pollution and high safety risks when setting up the reaction platform, the designers of this invention have developed and innovatively proposed a lifting-free static load reaction system and its operation method based on the concept of resource conservation, energy conservation and emission reduction, environmental friendliness, ecological balance, high efficiency and innovation, and sustainable development. The system is suitable for vertical compressive static load tests and pressure plate load tests on single piles with a load weight of less than 100 tons.

[0035] like Figure 1 The system simulation structure diagram shown in the figure shows that the hoist-free static load reaction system is composed of a barn-type self-propelled static load vehicle 1, a magnetic transport pipe 2, a transport vehicle 3, and a portable displacement detection reference bracket. The displacement monitoring reference bracket includes a pressure plate 41 laid on the top of the foundation pile and a jack 42 with the push surface facing upward, which is attached to the pressure plate. It mainly serves as an auxiliary part for load transfer between the foundation pile 5 and the static load vehicle and for obtaining test result data. This part is usually easy to disassemble and transport, and the load requirement of the required vehicle is relatively low. The above-mentioned transport vehicle 3 is equipped with a carriage 31 for carrying steel balls, and the volume of the carriage and the number of standard steel balls loaded therein are proportional to the vehicle load. The two ends of the magnetic transport pipeline 2 are movably connected to the transport vehicle 3 and the barn-type self-propelled static load vehicle 1. In the disassembled state, it can be transported relative to the transport vehicle or the barn-type self-propelled static load vehicle, and is driven by the motor to transport the steel balls in a directional manner by electromagnetic force. The above-mentioned barn-type self-propelled static load vehicle 1 is provided with a central sunken warehouse body 11. The bottom end of the warehouse body serves as the center of gravity of the counterweight and coincides with the coaxial line of the jack 42 and the foundation pile 5. The steel balls are accumulated or emptied in the warehouse body according to the reaction counterweight requirements.

[0036] As can be seen from the above overview, the system uses stacked steel balls as counterweights, magnetic transport pipes as transmission paths, and barn-type self-propelled static loaders as reaction devices. It is equipped with a portable displacement detection reference bracket to realize the automation of counterweight transportation and stacking, eliminating the need for large, fuel-consuming machinery such as flatbed transport trucks and cranes, as well as the participation of rope operators, saving manpower and material resources; and is conducive to improving efficiency and ensuring detection quality.

[0037] From a more detailed perspective, static load tests usually require a large counterweight for reaction force. Taking into account the load of the transport vehicle and the convenience of road traffic, in order to meet the counterweight requirement of a single static load test point, the system can optionally configure an extra-large load transport vehicle or multiple lower-load transport vehicles to transport steel balls in a coordinated manner. For the latter, the total weight of the steel balls carried by all transport vehicles meets the counterweight requirement.

[0038] The barn-style self-propelled static vehicle 1 has a silo 11 with a cylindrical upper portion and an inverted truncated cone lower portion (the overall shape resembles a large funnel). The entire silo 11 is attached to a body frame 13 via a number of evenly distributed circular tubular legs 12. The structural strength of the body frame and the static vehicle's moving components meets the requirements for vehicle movement and positioning when the silo is unloaded. As shown in the diagram, the bottom end of the silo 11 protrudes from the underside of the body frame 13 and contacts the jack's thrust surface 421. Therefore, whether the silo is unloaded or fully loaded, the circular tubular legs only provide circumferential support and stabilize the silo. The weight of the entire steel balls in the silo is directly transferred downward to the jack and piles, while only a minimal portion of the counterweight is transferred to the body frame. This reduces the structural strength requirements of the static vehicle itself. Naturally, the warehouse body 11 corresponds to the operational requirements of filling and emptying the steel balls, and its side wall is provided with an interface 111 for docking with the magnetic transport pipeline.

[0039] And, this barn type self-propelled static load vehicle is provided with the crawler unit 14 for walking positioning. Certainly according to the specification size of static load vehicle, also can be complete set assembly, meet the off-road wheel assembly of load requirement.

[0040] Furthermore, the magnetic transport conduit 2 is designed as a curved tube with a flat surface on the ground and partially elevated at both ends to accommodate transport vehicles or barn-style self-propelled static loaders. The conduit's docking direction is flexible and adjustable, allowing for easy docking adjustments when the ports are not aligned when the vehicles are parked. The conduit 2 also integrates a motor, a magnetic accelerator, and a controller with corresponding output counterweight parameters. By setting operating parameters in the controller and driving the motor, the steel balls are accelerated by electromagnetic force, rolling in a directional manner within the conduit and, in some locations, overcoming their own weight.

[0041] Regarding the practicality of the aforementioned magnetic transport conduit, further description is required: it utilizes an energized solenoid, the diameter of which is slightly larger than that of the steel ball, and generates a magnetic field when energized. According to the right-hand rule, with four fingers bent and aligned with the direction of the current in the solenoid, the end pointed by the thumb is the north pole of the energized solenoid. The distribution of the coils gradually increases in accordance with the directional rolling direction of the steel ball, and the intensity of the magnetic field generated accordingly gradually increases. To achieve the directional rolling of a large number of steel balls, after the motor is energized, the magnetic transport conduit generates a gradually increasing magnetic field. After the ball outlet valve is opened, the steel balls sequentially enter the magnetic acceleration conduit and, due to the thrust generated by the magnetic acceleration, roll directionally into the ball inlet. A buffer component can be provided at the corresponding ball inlet where the steel balls roll down, ensuring a smooth drop into the bin.

[0042] Based on the above introduction to the structure of the static load reaction system without hoisting, the present invention also provides an operation method of the static load reaction system. For any static load test point, the operation process can be summarized as follows.

[0043] S1. Pre-treat the pile embedding point by excavating and leveling a test pit, lay a pressure plate at the bottom of the pit and install a jack with the jack's pushing surface facing upwards; this will help the reaction force counterweight of the static load test to be fully and directly transferred to the piles buried under the ground.

[0044] S2: First, drive the barn-style self-propelled static load vehicle to the upper side of the test pit and adjust its position so that the center of gravity at the bottom of the barn coincides with the coaxial line of the jack and foundation pile. Unlike traditional static load test systems that require crane operation, this static load vehicle can be freely moved and precisely positioned when unloaded, providing significant convenience.

[0045] S3. The transport vehicle carrying the steel balls is then driven to the vicinity of the barn-type self-propelled static loading vehicle. The magnetic transport pipe is removed and connected to the transport vehicle and the barn-type self-propelled static loading vehicle at both ends. The number of output steel balls is set according to the reaction force counterweight requirement and the motor is started. The steel balls in the transport vehicle are accelerated one by one by electromagnetic force and rolled into the warehouse body until the tonnage requirement for reaction force counterweight is reached. The motor is then turned off, the connected magnetic transport pipe is disconnected and the interface is closed, completing the reaction force counterweight of one static load test point. If the transport vehicle's own load capacity is less than the reaction force counterweight requirement, the motor is paused when all the steel balls carried by one transport vehicle are delivered into the warehouse body, and then the magnetic transport pipe is operated to switch to another transport vehicle, restart the motor and continue to deliver steel balls to the warehouse body. If the second transport vehicle can meet the reaction force counterweight requirement, the motor is turned off after the tonnage requirement is reached. If the second transport vehicle still cannot meet the reaction force counterweight requirement, the operation of pausing the motor, switching transport vehicles, and restarting the motor is repeated until the total weight of steel balls input into the warehouse body by all transport vehicles reaches the tonnage requirement and the motor is turned off.

[0046] S4. Finally, after the static load test is completed, the transport vehicle is driven close to the barn-type self-propelled static load vehicle, and the magnetic transport pipe is re-connected between the two vehicles. After setting the number of unloading steel balls, the motor is started, and the steel balls in the bin are accelerated one by one by electromagnetic force and rolled back into the carriage of the transport vehicle until the bin is empty. After that, the motor is turned off, the connected magnetic transport pipes are disconnected, and the two vehicles are allowed to exit the site separately.

[0047] Although the above is a relatively complete static load reaction system operation process for one static load test point, however, there are usually many more points on the construction site that require static load testing, and each static load test point needs to be statically tested one by one according to unified testing standards, and acceptance can only be achieved after passing the inspection.

[0048] This method further leads to two optional implementations. The first is relatively simple. If cost-effective, each static load test point is equipped with a barn-style self-propelled static load vehicle and a set of displacement detection reference brackets. Steps S1 through S4 are then performed sequentially for each static load test point, allowing for batch and simultaneous testing. This implementation requires a large number of steel balls, as the number of steel balls required will increase to a certain scale, necessitating the deployment of a larger number of transport vehicles for transport.

[0049] Secondly, when limited cost investment prevents simultaneous batch testing of multiple static load test points, a relatively complex method of performing multi-point polling static load testing is employed, using two barn-style self-propelled static load vehicles and two sets of displacement detection reference brackets, as a minimum. This involves the following process: First, perform operations S1 through S3 for the first static load test point, conducting a separate test.

[0050] Then, S5, during the execution of S1 to S3 or after the first static load test point test is completed, the foundation pile burial point is pre-treated by excavating and leveling the test pit at the second static load test point, and a pressure plate is laid at the bottom of the pit and a jack is installed so that the pushing surface of the jack faces upward.

[0051] Then, S6, referring to the operation of S2, another barn-type self-propelled static load vehicle is positioned at the second static load test point and aligned, waiting for the barn to be filled.

[0052] Next, in S7, after the first static load test point is completed, the magnetic transport pipe is docked with two barn-style self-propelled static load vehicles, and the motor is activated to electromagnetically transfer all the steel balls in the bin corresponding to the first static load test point to the bin of the second static load test point. This completes the reaction force counterweighting of the second static load test point and the test begins. This bypasses the need for transport vehicles and utilizes a direct point-to-point transfer method, improving efficiency and saving energy.

[0053] Finally, S8, refer to the operations of S5 to S7, and test the remaining static load test points one by one until all static load test points have completed the test. Then refer to the operations of S4 to release the reaction weight, and make the transport vehicle and the barn-type self-propelled static load vehicle exit the field respectively.

[0054] Comparing the current traditional static load rebate system and many innovative attempts: (1) It is proposed to use water as a counterweight material, that is, to set up a water tank on the steel beam and pier, and inject water into it through a water pump. However, this approach still has obvious disadvantages. That is, the steel beam and pier are both heavy, and flatbed transport vehicles and cranes are still needed to enter the site for operation; and the density of water is much smaller than that of steel balls. Therefore, under the same weight, the required water tank and steel beam are larger in size, and the bending stiffness requirements of the steel beam are also increased accordingly. (2) Use a crawler self-propelled static load vehicle and directly use the soil and stone on site as counterweight materials. However, this approach also has disadvantages. That is, the availability of soil and stone on site may not be reliable, and there is a possibility that it cannot be implemented. Loading soil and stone still requires a large excavator to enter the site for operation, which cannot avoid the generation of dust; and the density of this type of counterweight material is also smaller than that of steel balls, which also results in the required steel beam and box frame being larger in size, and the bending stiffness requirements of the steel beam are also increased accordingly.

[0055] From the horizontal comparison, it can be concluded that the system solution of the present invention has a high degree of automation, convenient operation, small operation restrictions, high efficiency and quality; and from the perspective of benefits, its costs, safety risks, energy consumption and environmental pollution levels can be reduced to varying degrees.

[0056] From the above introduction to the lifting-free static load reaction system and its operating method of the present invention and the detailed description of the embodiment shown in the drawings, it can be seen that this solution has outstanding substantial features and significant progress, which are described in detail as follows.

[0057] 1) Using stacked steel balls as counterweights has a higher density. Under the same weight requirement, a smaller volume can be used. The stacking density of steel balls of the same specifications is about 4.5t / m 3 For example, to compare the volume required for different materials with the same weight, assuming the total weight is 80 tons, when stacking steel balls, length × width × height = 3m × 3m × 2m = 18m 2 When using concrete weight blocks, length × width × height = 3.5m × 3.5m × 2.6m = 32m 2 When a water tank is used as the ballast, length × width × height = 5m × 5m × 3.2m = 80m 2 This demonstrates the significant practicality of using steel balls, reducing both the area of ​​the ballast platform and the height of the load, while also lowering the bending stiffness requirements for the steel beams. Furthermore, the natural accumulation of steel balls of the same specification within the silo creates a regular and relatively homogeneous pile, thus avoiding the existing situation where the ballast platform may not be properly constructed.

[0058] 2) Using steel balls as bulk material enhances the convenience of long-distance transportation; automatic transportation is achieved via a magnetic transport pipe from the transport vehicle to the static load compartment. The pipe's built-in magnetic accelerator accelerates the steel balls' rolling motion within the track and enables movement between different heights. Precisely controlled by a circuit system with a counting function, the system accurately delivers the required number of steel balls for the desired counterweight. Once the specified number is reached, the circuit automatically switches, dissipating the electromagnetic force and enabling automatic and accurate loading. This convenient operation eliminates the traditional reliance on heavy-duty flatbed trucks and cranes for on-site transport and installation of concrete ballast blocks, while also eliminating the safety hazards of manual lifting operations.

[0059] 3) A barn-style self-propelled static load carrier was designed and adopted. Its travel function utilizes a crawler unit, freeing it from site access restrictions. This improves the weight platform's ability to adapt to various site conditions, including travel and positioning. The reaction weights are steel balls stacked in the silo. Utilizing the barn-style silo structure and integrated support design, the bottom of the silo serves as the center of gravity for the counterweights. By aligning the silo with the test object, the load from the upper reaction weights is effectively transferred downward, enhancing the reliability of the static load test results.

[0060] 4) The shape of the static load vehicle's compartment can be retracted and matched due to the reduction in volume of the reaction weight material, making the system and operation method suitable for sites with limited space.

[0061] 5) Good environmental benefits make the foundation static load testing industry sustainable. With the withdrawal of large-scale machinery, static load reaction devices have become more automated and popularized, reducing energy consumption and the emission of atmospheric pollutants. For example, a platen load test consumes 50 kg of diesel. In a certain project, platen load tests at 120 static load test points can save 6,000 kg of diesel and reduce CO2 emissions by 1.92×10 4 kg. It can protect the environment very well and maintain ecological balance and sustainable development.

[0062] In addition to the above embodiments, the present invention may also have other implementation methods. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A method for operating a hoist-free static load reaction system, wherein the static load reaction system is composed of a barn-type self-propelled static load vehicle, a magnetic transport pipeline, a transport vehicle, and a portable displacement detection reference bracket, wherein the displacement detection reference bracket includes a pressure plate laid on the top of the foundation pile and a jack mounted on the pressure plate with the push surface facing upward, the transport vehicle is provided with a carriage for carrying steel balls, the magnetic transport pipeline is provided as a curved pipe with the main body laid flat on the ground and the two ends partially raised to dock with the transport vehicle and the barn-type self-propelled static load vehicle, and the pipe opening docking direction is flexibly adjustable; and the magnetic transport pipeline is provided with a motor, a magnetic accelerator, and a controller corresponding to the output counterweight parameter, the steel balls are subjected to electromagnetic The force accelerates the rolling in a directional and partial position against its own weight in the magnetic transport pipe. The barn-type self-propelled static load vehicle is provided with a crawler unit or off-road wheel assembly for walking and positioning, and is provided with a central sunken warehouse body. The upper part of the warehouse body is set as a cylinder and the lower part is set as an inverted frustum. The whole warehouse body is attached to the vehicle body bracket through a number of round tube legs evenly distributed around it, and the bottom end of the warehouse body passes through the bottom side of the vehicle body bracket and contacts the pushing surface of the jack. The center of gravity of the counterweight coincides with the coaxial line of the jack and the foundation pile. The side wall of the warehouse body is provided with an interface for docking the magnetic transport pipe. Steel balls are piled up or emptied in the warehouse body according to the requirements of the reaction counterweight. It is characterized in that include: S1. Pre-treat the foundation pile embedding point by excavating and leveling a test pit, lay a pressure plate at the bottom of the pit and install a jack with the jack's pushing surface facing upwards; S2. Drive the barn-type self-propelled static load vehicle to the upper side of the test pit and adjust the position so that the center of gravity of the bottom of the barn coincides with the coaxial line of the jack and the foundation pile; S3. Drive the transport vehicle carrying the steel balls to the vicinity of the barn-type self-propelled static load vehicle, remove the magnetic transport pipe and connect the two ends to the transport vehicle and the barn-type self-propelled static load vehicle respectively, set the number of output steel balls according to the reaction force counterweight requirement and start the motor. Use electromagnetic force to accelerate the steel balls in the transport vehicle one by one and roll them into the warehouse body until the tonnage requirement of the reaction force counterweight is reached. Then turn off the motor, disconnect the connected magnetic transport pipe and close the interface to complete the reaction force counterweight of one static load test point; S4. After the static load test is completed, the transport vehicle is driven close to the barn-type self-propelled static load vehicle, and the magnetic transport pipe is re-connected between the two vehicles. After setting the number of unloading steel balls, the motor is started, and the steel balls in the bin are accelerated one by one by electromagnetic force and rolled back into the carriage of the transport vehicle until the bin is empty. After that, the motor is turned off, the connected magnetic transport pipes are disconnected, and the two vehicles are allowed to exit the site separately.

2. The method for operating a hoist-free static load reaction system according to claim 1, characterized in that: The transport vehicle's own load capacity is less than the reaction force counterweight requirement. In S3, when all the steel balls carried by a transport vehicle are delivered to the warehouse, the motor is paused, and then the magnetic transport pipeline is operated to switch to another transport vehicle, the motor is restarted and the steel balls are continued to be transported to the warehouse. If the second transport vehicle can meet the reaction force counterweight requirement, the motor is turned off after the tonnage requirement is reached. If the second transport vehicle cannot meet the reaction force counterweight requirement, the operation of pausing the motor, switching the transport vehicle, and restarting the motor is repeated until the total weight of the steel balls input into the warehouse by all transport vehicles reaches the tonnage requirement and the motor is turned off.

3. The method for operating a static load reaction system without hoisting according to claim 1, characterized in that: There are more than two static load test points, and each static load test point is equipped with a barn-type self-propelled static load vehicle and a set of displacement detection reference brackets. The operations S1 to S4 are performed in sequence for each static load test point, and batch synchronous tests are performed.

4. The method for operating a static load reaction system without hoisting according to claim 1, characterized in that: There are more than two static load test points, and two barn-type self-propelled static load vehicles and two sets of displacement detection reference brackets are configured. For the first static load test point, perform S1 to S3 operations and conduct a separate test; S5. During the execution of S1 to S3 or after the first static load test point is completed, pre-treat the pile embedding point at the second static load test point by excavating and leveling the test pit, and lay a pressure plate at the bottom of the pit and install a jack with the jack's pushing surface facing upwards; S6. Refer to the operation in S2 and position another barn-type self-propelled static load vehicle at the second static load test point; S7. After the first static load test point is completed, the magnetic transport pipe is docked with two barn-type self-propelled static load vehicles, and the motor is started to transfer all the steel balls in the bin corresponding to the first static load test point to the bin of the second static load test point through electromagnetic force, completing the reaction force counterweight of the second static load test point and starting the test; S8. Refer to the operations of S5 to S7 and test the remaining static load test points separately in sequence until all static load test points have completed the test. Then refer to the operations of S4 to release the reaction weight and make the transport vehicle and barn-type self-propelled static load vehicle exit the site respectively.

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