Rapid static load test device and test method

Abstract

The present invention provides a rapid static load test device and test method, belonging to the field of engineering test technology. The rapid static load test device includes a chassis, a loading assembly, a reaction force system, and a detection assembly. The chassis includes a support assembly and multiple groups of anchor assemblies, the support assembly is used to support the chassis on the ground; the multiple groups of anchor assemblies are arrayed and connected below the support assembly; the loading assembly is located at the center of the chassis, and the output end is used to vertically press downward against the pile foundation; the reaction force system includes a water tank, which is detachably connected to the chassis and has its center of gravity vertically aligned with the loading assembly. The water tank is filled with water to generate gravity to offset at least part of the upward reaction force of the loading assembly; the detection assembly has multiple detection ends respectively located on the four side walls of the water tank, and the multiple detection ends are respectively used to detect the water level at their respective locations to determine the tilt angle of the water tank. The test method provided by the present invention uses the above-mentioned test device and has the advantages of convenient test operation, high efficiency, and good safety.

Description

Technical Field

[0001] The present invention belongs to the technical field of civil engineering testing, and more particularly, relates to a rapid static load testing device and a testing method. Background Art

[0002] Static load test refers to a test method in which vertical pressure is applied step by step to the top of the pile and the settlement of the pile top is observed over time to determine the corresponding vertical compressive bearing capacity of the single pile.

[0003] Static load tests utilize a slow, sustained load method, requiring step-by-step loading. Each load level reaches relative stability before the next level is added to meet experimental requirements. Prior art commonly used loads include sandbags and precast concrete blocks. The loading process is complex and time-consuming, resulting in low test efficiency. Furthermore, as the load increases, the load can easily tilt, compromising test accuracy and potentially leading to safety concerns such as tipping over. Summary of the Invention

[0004] The purpose of the present invention is to provide a rapid static load test device and test method, aiming to solve the technical problems of inconvenient loading, low efficiency and poor safety of existing static load test devices.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] In a first aspect, an embodiment of the present invention provides a rapid static load test device, comprising:

[0007] A chassis, comprising a support assembly and multiple groups of anchoring assemblies, wherein the support assembly is used to support the chassis horizontally on the ground; multiple groups of the anchoring assemblies are connected in an array below the support assembly and are used to be anchored into the ground to fix the chassis;

[0008] A loading assembly is provided at the center of the chassis, and an output end thereof is used to press the pile foundation vertically downward;

[0009] a reaction force system comprising a water tank detachably connected to the chassis, with its center of gravity vertically aligned with the loading assembly, the water tank being filled with water to generate gravity to offset at least part of the upward reaction force of the loading assembly; and

[0010] The detection component has a plurality of detection ends respectively arranged on the four side walls of the water tank, and the plurality of detection ends are respectively used to detect the water levels at the corresponding side walls of the water tank to determine the inclination angle of the water tank.

[0011] In one possible implementation, the support assembly includes:

[0012] A supporting beam frame, the top surface of which is connected to the water tank;

[0013] A plurality of groups of leveling support members are arranged in an array below the support beam, and are all telescopic in a vertical direction and supported on the ground; and

[0014] At least four groups of moving parts are arranged in an array at four corners of the support beam, and the moving parts are used for rolling and supporting on the ground after the leveling support parts are contracted.

[0015] By setting the leveling support, on the one hand, auxiliary support is provided for the chassis, and on the other hand, the device can be leveled by adjusting the leveling support; by setting the moving part, the device can be easily moved to the next test point, saving manpower operation time and improving test efficiency.

[0016] In one possible implementation, the anchoring assembly includes:

[0017] A through-hole jack is connected below the support assembly; a pressure plate is connected to the lower end of the through-hole jack;

[0018] a connector, disposed in the through hole of the through jack, with an upper end connected to the support assembly, the connector having a connector end for extending vertically downward out of the through hole; and

[0019] A recovery pile, the upper end of which is connected to the joint end, and the lower end of which is used to extend downward into the ground along the joint end; a groove suitable for the pressing plate to be embedded is provided radially on the pile body of the recovery pile;

[0020] The through-core jack is used to drive the recovery pile into the ground by squeezing the pressure plate, and the joint end extends into the ground along with the recovery pile.

[0021] Anchoring assemblies are provided to secure the base plate to the pile foundation to be tested.

[0022] In some embodiments, a plurality of installation holes arranged in a horizontal direction are arranged at intervals on the pile body of the recovery pile, and a group of thorn head assemblies are arranged in each installation hole, and the thorn head assemblies are used to penetrate into the ground in a horizontal direction.

[0023] Exemplarily, the mounting hole is further provided with:

[0024] A baffle is provided at the protruding end of the thorn head assembly and is connected to the tail end of the thorn head assembly via an elastic rope;

[0025] A limiting plate is provided on the hole wall of the mounting hole, and a plurality of leakage holes are provided on the limiting plate at intervals, and the leakage holes are used to install balls that roll and support the thorn head;

[0026] The baffle is used to intercept part of the external soil; the leakage hole is also used to leak part of the soil entering the installation hole into the pile head of the recovery pile.

[0027] In one possible implementation, the water tank includes:

[0028] a bottom plate, horizontally placed on the top surface of the support assembly;

[0029] Two sets of fixing plates are fixedly connected to the front and rear ends of the bottom plate in a vertical direction;

[0030] Two sets of movable plates are detachably connected to the two ends of the two sets of fixed plates in a vertical direction, and the movable plates have a closed state in which they are sealed and abutted against the same end of the two fixed plates to enclose a closed cavity, and an open state in which the lower ends are flipped outward to open the closed cavity;

[0031] at least one set of elastic members, both ends of which are respectively connected to the two sets of movable plates, and when the movable plates are in the closed state, the elastic members are in a compressed energy storage state; and

[0032] A locking member, used for locking the two sets of movable panels in the closed state;

[0033] Wherein, when the locking member is opened, the two groups of movable panels are flipped to the open state under the elastic force of at least one group of elastic members.

[0034] By arranging elastic parts in the water tank and making the fixed plate and the movable plate detachably connected, the water tank can be opened and closed, so that in an emergency, the water tank can be opened in time to avoid the entire device from tipping over.

[0035] In some embodiments, the locking member includes:

[0036] a fixing rope, wound around the outer circumference of the water tank, used to keep the movable panel in the closed state, and provided with a fastener;

[0037] a plurality of emergency switches, spaced apart on the fixing rope and electrically connected to the fastener; and

[0038] a tilt monitoring component, provided on the water tank and connected to the emergency switch, for monitoring the tilt angle of the water tank;

[0039] Wherein, when the tilt monitoring component detects that the tilt angle of the water tank exceeds a set value, at least one of the emergency switches is triggered to close, and when at least one of the emergency switches is closed, the fastener is automatically disconnected.

[0040] Exemplarily, the tilt monitoring component includes:

[0041] a support, fixed on the top of the fixed plate or the movable plate;

[0042] A connecting rod assembly having an active end extending vertically into the water tank, the active end being connected to a float; the connecting rod assembly also having a driven end for inserting into the emergency switch;

[0043] Wherein, after the float tilts along with the water surface in the water tank to a value exceeding a preset angle, the float drives the driven end to move to trigger the emergency switch.

[0044] In one possible implementation, the connecting rod assembly includes:

[0045] A rotating rod is rotatably connected to the support; and the axial direction of the rotating rod is parallel to the side wall surface of the water tank;

[0046] an active rod assembly, one end of which is fixedly connected to the rotating rod, and the other end of which extends downward into the water tank and is connected to the float; and

[0047] One end of the driven rod is rotatably connected to the rotating rod, and the other end can be inserted into the emergency switch downward along a vertical direction to trigger the emergency switch.

[0048] Compared with the prior art, the solution shown in the embodiment of the present application is that the counterweight in the reaction force system of the device is selected by filling water in the water tank, which can achieve a step-by-step increase in the counterweight. The loading operation process is simple and time-saving, which can improve the test efficiency. At the same time, a detection component is provided to detect the water surface condition in the water tank at any time, so that the device can be leveled in time when it tilts, which can avoid the occurrence of the device tipping over and ensure the safety and stability of the device.

[0049] In a second aspect, an embodiment of the present invention further provides a rapid static load test method, which uses the rapid static load test device described above and includes the following steps:

[0050] S1. Assemble the support assembly, the water tank and tilt monitoring member;

[0051] S2. The site where the pile foundation is located is leveled, and the assembled search book rapid static load test apparatus is moved above the pile foundation, and the leveling support member of the support assembly is extended;

[0052] S3. Fill the water tank to a preset water level;

[0053] S4. Observe the tilt state of the water surface in the water tank by tilting the monitoring member, check the installation of the insurance assembly; and level the chassis through the leveling support member;

[0054] S5. After the test device is level, install the loading assembly and connect the monitoring equipment;

[0055] S6. Perform a single pile test on the pile foundation;

[0056] S7. After the single pile test, the water in the water tank is drained into the storage barrel, the loading assembly and the anchor assembly are removed; the leveling support is retracted, the test apparatus is moved to the next test point, and step S2 is entered until all tests are completed;

[0057] S8. Dismantle the test device;

[0058] If the detection component detects that the water tank is tilted during step S6, the water tank is opened and emptied urgently.

[0059] The rapid static load test method provided by the embodiment of the present invention has all the beneficial effects of the above-mentioned rapid static load test device due to the use of the above-mentioned test device, making the operation process of the single pile test simple and convenient, improving the test efficiency, and the operation process is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0061] Figure 1 A schematic diagram of the main structure of the support assembly of the rapid static load test device provided by an embodiment of the present invention;

[0062] Figure 2 for Figure 1 A partial enlarged structural diagram of the support assembly A is shown;

[0063] Figure 3 for Figure 1 A side structural schematic diagram of the support assembly shown;

[0064] Figure 4 A schematic structural diagram of an anchor assembly of a rapid static load test device provided by an embodiment of the present invention;

[0065] Figure 5 A schematic diagram of the structure of a recovery pile provided in an embodiment of the present invention;

[0066] Figure 6 A schematic diagram of the cross-sectional structure of a recovery pile provided in an embodiment of the present invention;

[0067] Figure 7 A schematic top view of the water tank of the rapid static load test device provided by an embodiment of the present invention;

[0068] Figure 8 A schematic diagram of the main structure of a water tank of a rapid static load test device provided by an embodiment of the present invention;

[0069] Figure 9 A schematic structural diagram of a tilt monitoring component of a rapid static load test device provided by an embodiment of the present invention;

[0070] Figure 10 A schematic diagram of the connection structure between the tilt monitoring component and the emergency switch provided in an embodiment of the present invention;

[0071] Figure 11 A schematic diagram of the structure of a detection component provided in an embodiment of the present invention;

[0072] Figure 12 A schematic diagram of the monitoring circuit structure of a rapid static load test device provided by an embodiment of the present invention;

[0073] Figure 13 A schematic diagram of the flow structure of the rapid static load test method provided in an embodiment of the present invention.

[0074] In the figure: 1. chassis; 11. support assembly; 111. support beam; 1111. main beam; 1112. auxiliary beam; 112. leveling support; 113. moving part; 12. anchor assembly; 121. through-hole jack; 1211. pressure plate; 122. joint piece; 123. recovery pile; 1231. groove; 1232. mounting hole; 1233. baffle; 1234. elastic rope; 1235. limit plate; 1236. ball; 1237. fan-shaped damping strip; 13. spike assembly; 131. spike; 132. electromagnetic drive component; 2. pile foundation; 3. loading assembly; 31. loading jack; 32. force transmission column; 33. steel plate; 4. reaction system; 41. water tank; 411. bottom plate ; 412. Fixed plate; 413. Movable plate; 4131. Bending extension edge; 414. Elastic part; 415. Fixed rope; 416. Emergency switch; 417. Inner support rod; 42. Tilt monitoring component; 421. Support; 422. Connecting rod assembly; 4221. Rotating rod; 4222. Active rod group; 42221. Horizontal rod; 42222. Connecting rod; 4223. Driven rod; 423. Float; 5. Detection assembly; 51. Tilt monitoring scale; 52. Monitoring circuit component; 521. Power supply; 522. Circuit switch; 523. First indicator light; 524. Field effect transistor VT; 525. Alarm; 526. Second indicator light; 527. Resistor; 528. Capacitor; 6. Fuse assembly. DETAILED DESCRIPTION

[0075] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0076] It should be noted that when an element is referred to as being “disposed on” another element, it may be directly on the other element or indirectly on the other element. It should be understood that the terms “length”, “width”, “upper”, “lower”, “front”, “back”, “top”, “bottom”, “inside”, “outside”, etc., indicating positions or positional relationships, are based on the positions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0077] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "several" means two or more, unless otherwise specifically defined.

[0078] Please also refer to Figures 1 to 13 Now, the rapid static load test device and test method provided by the present invention are described.

[0079] A rapid static load test device provided by an embodiment of the present invention includes a chassis 1, a loading component 3, a reaction force system 4 and a detection component 5; the chassis 1 includes a support component 11 and multiple groups of anchor components 12, the support component 11 is used to support the chassis 1 horizontally on the ground; multiple groups of anchor components 12 are connected in an array below the support component 11, and are used to anchor into the ground to fix the chassis 1; the loading component 3 is arranged at the center of the chassis 1, and the output end is used to press the pile foundation 2 vertically downward; the reaction force system 4 includes a water tank 41, the water tank 41 is detachably connected to the chassis 1, and the center of gravity is vertically aligned with the loading component 3, and the water tank 41 is used to be filled with water to generate gravity to offset at least part of the upward reaction force of the loading component 3; the detection component 5 has multiple detection ends respectively arranged on the four side walls of the water tank 41, and the multiple detection ends are respectively used to detect the water levels at the corresponding side walls of the water tank 41 to determine the inclination angle of the water tank 41.

[0080] It should be noted that the support assembly 11 used in this application is used to stably support the chassis 1 on the ground. The reaction system 4 uses the gravity of water to provide reaction force, and the tilt state of the device can be determined by observing the tilt of the water surface; the loading assembly 3 is used to load the pile foundation 2 step by step after the chassis 1 is stabilized.

[0081] It should be understood that the detection end is specifically used to detect the water level in the water pipe installed at the corresponding side wall of the water tank 41 to determine the inclination angle of the water tank 41.

[0082] Compared with the prior art, the solution shown in the embodiment of the present application is that the counterweight in the reaction force system 4 of the present device is selected by filling water in the water tank 41, which can achieve a step-by-step increase in the counterweight. The loading operation process is simple and time-saving, which can improve the test efficiency. At the same time, a detection component 5 is provided, which can detect the water surface condition in the water tank 41 at any time, so that the device can be leveled in time when the device is tilted, which can avoid the occurrence of the device tipping over and ensure the safety and stability of the device.

[0083] See also Figure 1 and Figure 2 In one possible implementation, the support assembly 11 includes a support beam 111, multiple groups of leveling supports 112 and at least four groups of moving parts 113; the top surface of the support beam 111 is connected to the water tank 41; the multiple groups of leveling supports 112 are arranged in an array below the support beam 111, and all are retracted and supported on the ground in the vertical direction; the four groups of moving parts 113 are distributed in an array at the four corners of the support beam 111, and the moving parts 113 are used to roll and support on the ground after the leveling supports 112 are retracted.

[0084] By setting the leveling support 112, on the one hand, auxiliary support is provided for the chassis 1, and on the other hand, the device can be leveled by adjusting the leveling support 112; by setting the moving part 113, the device can be conveniently moved to the next test point, saving manpower operation time and improving test efficiency.

[0085] Optionally, the support beam frame 111 can be formed by fixing multiple support beams; specifically, the support beam frame 111 is provided with a main beam 1111 and an auxiliary beam 1112, wherein the center of the main beam 1111 is connected to the above-mentioned loading component 3, multiple groups of leveling support members 112 and moving members 113 are all installed on the auxiliary beam 1112, and the anchoring component 12 is also installed on the bottom surface of the auxiliary beam 1112.

[0086] It should be understood that the lower end of the main beam 1111 is provided with the above-mentioned limiting groove adapted to the upper end of the loading assembly 3.

[0087] It should be noted that the moving member 113 used in this application is a tire driven by a motor, which can drive the entire device to move; the tire is a universal wheel, which can facilitate movement in all directions. In addition, the moving member 113 can also be other structures that can achieve device movement.

[0088] See also Figure 4In one possible implementation, the anchor assembly 12 includes a through-hole jack 121, a connector 122 and a recovery pile 123; the through-hole jack 121 is connected to the bottom of the support assembly 11; the lower end of the through-hole jack 121 is connected to a pressure plate 1211; the connector 122 is arranged in the through-hole of the through-hole jack 121, and the upper end is connected to the support assembly 11, and the connector 122 has a connector end for extending downward from the through-hole in a vertical direction; the upper end of the recovery pile 123 is connected to the connector end, and the lower end is used to extend downward into the ground along the connector end; a groove 1231 suitable for embedding the pressure plate 1211 is radially provided on the pile body of the recovery pile 123; wherein, the through-hole jack 121 is used to drive the recovery pile 123 into the formation by squeezing the pressure plate 1211, and the connector end extends into the ground along the recovery pile 123.

[0089] Optionally, the recovery pile 123 includes a multi-section segmented pile and a pile head; the pile bodies of the multi-section segmented piles are all provided with grooves 1231 for sequentially driving into the ground; the pile head is detachably connected to the lower end of the segmented pile.

[0090] It should be understood that when the recovery pile 123 is driven into the ground, the through-hole jack 121 compresses the pressure plate 1211, which in turn drives the first segmented pile downward through the groove 1231, allowing the recovery pile 123 to enter the ground. After the first segmented pile is inserted into the ground, the through-hole jack 121 returns, and the pressure plate 1211 is removed. Another segmented pile is then installed, and the pressure plate 1211 is placed in the groove 1231 of the pile body. The through-hole jack 121 can continue to compress the pressure plate 1211, allowing the next segmented pile to enter the ground.

[0091] Furthermore, after the pile body is extruded, the through-hole jack 121 is disassembled, and then the pile body and the connector 122 on the auxiliary beam 1112 are connected by pile segments.

[0092] It should be noted that the upper end of the connector 122 is connected to the auxiliary beam 1112. The connector 122 can rotate and move up and down. When the connector 122 moves downward, it is connected to the segmented pile as a whole; when it moves upward, it separates from the segmented pile.

[0093] The anchoring assembly 12 is provided to fix the bottom plate 411 above the pile foundation 2 to be tested.

[0094] See also Figure 4 and Figure 5 In some embodiments, a plurality of horizontally arranged mounting holes 1232 are arranged on the pile body of the recovery pile 123 at intervals, and a group of thorn head assemblies 13 are arranged in each mounting hole 1232, and the thorn head assemblies 13 are used to penetrate into the ground in the horizontal direction.

[0095] Specifically, the piercing head assembly 13 includes an electromagnetic driving member 132 and a piercing head 131 ; the piercing head 131 is electromagnetically connected to the electromagnetic driving member 132 , and the piercing head 131 is used to penetrate into the ground in a horizontal direction or retract into the mounting hole 1232 under the drive of the electromagnetic driving member 132 .

[0096] It should be noted that during the process of inserting the recovery pile 123 into the ground or pulling it out of the ground, the thorn head 131 shrinks into the recovery pile 123 under the magnetic adsorption of the electromagnetic driving component 132. After the recovery pile 123 is inserted into the ground, the thorn head 131 is extended into the formation through the electromagnetic driving component 132.

[0097] In addition, the recovery pile 123 can be pulled out after completing one test and used in the next test, and can be reused.

[0098] See also Figure 6 , illustratively, a baffle 1233 and a limiting plate 1235 are also provided in the mounting hole 1232; the baffle 1233 is provided at the protruding end of the thorn head assembly 13, and is connected to the tail end of the thorn head assembly 13 by an elastic rope 1234; the limiting plate 1235 is provided on the hole wall of the mounting hole 1232, and a plurality of leakage holes are provided at intervals on the limiting plate 1235, and the leakage holes are used to install the ball 1236 that rolls and supports the thorn head 131; wherein, the baffle 1233 is used to intercept part of the external soil; the leakage holes are also used to leak part of the soil that enters the mounting hole 1232 into the pile head of the recovery pile 123.

[0099] It should be understood that when the spike head 131 is inserted horizontally into the ground, some soil will enter the pile body; therefore, in this device, a baffle 1233 is provided at the protruding end of the spike head assembly 13 to prevent the entry of soil; in addition, even if some soil enters, it can fall down into the pile head through the leakage hole on the above-mentioned limit plate 1235, thereby avoiding affecting the movement of the spike head 131.

[0100] In addition, a ball 1236 is installed on the limiting plate 1235 in the device, which can facilitate the movement of the thorn head 131 in the installation hole 1232.

[0101] Optionally, a fan-shaped damping strip 1237 is provided on the upper portion of the recovery pile 123 .

[0102] See also Figure 7 and Figure 8In a possible implementation, the water tank 41 includes a bottom plate 411, two groups of fixed plates 412, two groups of movable plates 413, at least one group of elastic members 414 and a locking member; the bottom plate 411 is horizontally placed on the top surface of the support assembly 11; the two groups of fixed plates 412 are fixedly connected to the front and rear ends of the bottom plate 411 in the vertical direction; the two groups of movable plates 413 are detachably connected to the two ends of the two groups of fixed plates 412 in the vertical direction, and the movable plates 413 have a closed state in which they are sealed and abutted with the same end of the two fixed plates 412 to form a closed cavity, and also have an open state in which the lower end is flipped outward to open the closed cavity; the two ends of the elastic member 414 are respectively connected to the two groups of movable plates 413, and when the movable plates 413 are in the closed state, the elastic member 414 is in a compressed energy storage state; the locking member is used to lock the two groups of movable plates 413 in the closed state; wherein, when the locking member is opened, the two groups of movable plates 413 flip to the open state under the elastic force of at least one group of elastic members 414.

[0103] It should be noted that the order of the numbers of the components in the reaction system 4 in this application is not related to the subordinate relationship between the components, and is only for the convenience of marking the components in the drawings.

[0104] In some embodiments, the locking member includes a fixed rope 415, multiple sets of emergency switches 416 and a tilt monitoring member 42; the fixed rope 415 is wrapped around the outer periphery of the water tank 41, used to keep the movable plate 413 in a closed state, and a fastener is provided on the fixed rope 415; multiple sets of emergency switches 416 are arranged at intervals on the fixed rope 415 and connected to the fastener; the tilt monitoring member 42 is provided on the water tank 41 and connected to the emergency switch 416, used to monitor the tilt angle of the water tank 41; wherein, when the tilt monitoring member 42 detects that the tilt angle of the water tank 41 exceeds the set value, at least one emergency switch 416 is triggered to close, and when at least one emergency switch 416 is closed, the fastener is automatically disconnected.

[0105] It should be noted that the structure and working principle of the fastener used in this application belong to the existing technology. The fastener can disconnect the fixing rope 415 under the control of the emergency switch 416. Its specific structure and working principle will not be repeated here.

[0106] By arranging an elastic member 414 in the water tank 41 and arranging a fixed plate 412 and a movable plate 413, the water tank 41 can be opened and closed, so that in an emergency, the water tank 41 can be opened in time to prevent the entire device from tipping over.

[0107] Optionally, a spring support rod is provided in the water tank 41 along the extension and contraction direction of the elastic member 414 , and a plurality of groups of mutually perpendicular inner support rods 417 are also provided in the water tank 41 for supporting the box body of the water tank 41 .

[0108] It should be noted that the structure and working principle of the emergency switch 416 set in this application are both existing technologies. When one group of emergency switches 416 is triggered, the fixing rope 415 at the corresponding fastener is disconnected; in addition, multiple emergency switches 416 are connected in series, and multiple emergency switches 416 can be controlled to be triggered at the same time.

[0109] Illustratively, both ends of the movable plate 413 are provided with bent extension edges 4131 , and the ends of the fixed plate 412 abut against the inside of the bent extension edges 4131 .

[0110] See also Figure 8 , exemplarily, a plurality of tilt monitoring components 42 corresponding one to one with the emergency switch 416 are provided on the top of the water tank 41, and the tilt monitoring components 42 include a support 421 and a connecting rod assembly 422; the support 421 is fixed on the top of the fixed plate 412 or the movable plate 413; the connecting rod assembly 422 has an active end extending into the water tank 41 in the vertical direction, and the active end is connected to a float 423; the connecting rod assembly 422 also has a driven end for being plugged into the emergency switch 416; wherein, after the float 423 tilts with the water surface in the water tank 41 to exceed a preset angle, the float 423 drives the driven end to move to trigger the emergency switch 416.

[0111] It should be understood that the structure and working principle of the float 423 belong to the existing technology, and the float 423 can move up and down with the inclination of the water surface in the water tank 41, thereby driving the active end of the connecting rod assembly 422 to move up and down, and causing the driven end of the connecting rod assembly 422 to trigger the emergency switch 416.

[0112] By setting the connecting rod assembly 422, the connecting rod assembly 422 can transmit the up and down movement of the float 423 to the emergency switch 416, so as to control the fixing rope 415 to release the fixation of the water tank 41.

[0113] See also Figure 8 In some embodiments, the connecting rod assembly 422 includes a rotating rod 4221, an active rod group 4222, and a driven rod 4223. The rotating rod 4221 is rotatably connected to the support 421; the axial direction of the rotating rod 4221 is parallel to the side wall of the water tank 41. The active rod group 4222 has one end fixedly connected to the rotating rod 4221, and the other end extends downward into the water tank 41 and is connected to the float 423. The driven rod 4223 has one end rotatably connected to the rotating rod 4221, and the other end can be inserted vertically downward into the emergency switch 416 to trigger the emergency switch 416.

[0114] Optionally, the active rod group 4222 includes a connecting rod 42222 and a horizontal rod 42221. The connecting rod 42222 extends vertically downward into the water tank 41. The lower end of the connecting rod 42222 is connected to a float 423, and the upper end is connected to the horizontal rod 42221; the other end of the horizontal rod 42221 is fixedly connected to the rotating rod 4221.

[0115] Specifically, when the float 423 moves upward, the upper end of the connecting rod 42222 drives the horizontal rod 42221 to rotate around the rotating rod 4221, and causes the driven rod 4223 connected to the rotating rod 4221 to move downward, so that the lower end of the driven rod 4223 is plugged into the emergency switch 416.

[0116] See also Figure 10 , illustratively, the lower end of the driven rod 4223 is provided with an insert block, and optionally, the insert block is hinged to the lower end of the driven rod 4223; the emergency switch 416 is provided with a corresponding slot, and when the lower end of the driven rod 4223 moves downward, the insert block is inserted into the corresponding slot.

[0117] Preferably, the plug block uses an I-shaped latch, and a connecting piece is provided on the emergency switch 416, and the connecting piece is provided with a slot adapted to the I-shaped latch; the emergency switch 416 is connected to the I-shaped latch through the connecting piece, and the thickness of the I-shaped latch can determine the degree of inclination of the water tank 41 when the emergency switch 416 is triggered.

[0118] In addition, a safety component 6 is inserted through the above-mentioned plug-in block and slot.

[0119] In some embodiments, the safety component 6 may be a limiting bolt or a limiting pin. The safety component 6 may be inserted into the slot in a direction perpendicular to the movement of the insert block and extend into the insert block to achieve limiting.

[0120] See also Figure 8 In one possible implementation, the detection assembly 5 includes a plurality of groups of tilt monitoring scales 51 spaced apart around the sides of the water tank 41 , and each group of tilt monitoring scales 51 is provided with a group of monitoring circuit components 52 .

[0121] By providing the tilt monitoring scale 51 , it is convenient to observe the tilt of the water surface in the water tank 41 .

[0122] It should be noted that the structure and working principle of the tilt monitoring scale 51 are prior art and will not be described in detail here.

[0123] It should be noted that the monitoring circuit component 52 is provided with a power supply device, which can alarm when the water tank 41 tilts; specifically, the monitoring circuit component 52 can be an attached Figure 11The circuit structure shown in the figure is to connect the circuit board between A-A' and BB'; when the water level reaches A-A', the power is turned on and the monitoring circuit component 52 alarms. When the water level is lower than the BB' scale, the power is also turned on and the monitoring circuit component 52 alarms. Under normal circumstances, the water level scale on the scale of each tilt monitoring scale 51 is between A-A' and BB'. When the water surface tilts, the water level of some tilt monitoring scales 51 is lower than BB', and the water level of some scales is higher than A-A'. At this time, the monitoring circuit component 52 alarms.

[0124] Optionally, the monitoring circuit 52 may be equipped with Figure 12 The connection method of each component in the monitoring circuit component 52 is shown. Specifically, the monitoring circuit component 52 includes a power supply 521, a circuit switch 522, a first indicator light 523, a field effect transistor VT524, an alarm 525, a second indicator light 526, a resistor 527 and a capacitor 528. When in operation, the A, A', B, B' at the circuit ports are correspondingly connected to the ports A, A', B, B' on the tilt monitoring scale 51, wherein ports A' and B' are connected together. The gate and source of the field effect transistor VT524 are connected to a short circuit state. At this time, the field effect transistor VT524 is in the cut-off state, and the alarm 525 is not powered and does not work. The monitoring circuit component 52 is connected through the resistor 527 and BB', but the resistor 527 is very large. At this time, the alarm 525 is in a micro-power "standby" state, and the operating current of the circuit in the entire monitoring circuit component 52 is very small. When the water level is lower than the BB' level, BB' is disconnected, and the field effect transistor VT524 receives gate bias and saturates and conducts. At this time, the monitoring circuit component 52 is connected through the alarm 525 and the field effect transistor VT524, and the alarm 525 operates. When the water level is higher than the AA' level, the monitoring circuit component 52 is connected through the alarm 525 and the port AA', and the alarm 525 operates.

[0125] Optionally, the present application may also select other circuit connection structures that can realize the above-mentioned alarm function.

[0126] See also Figure 3 In some possible embodiments, the loading assembly 3 includes a force transmission column 32 and a loading jack 31; the force transmission column 32 is limited to the lower end of the support assembly 11 along the vertical direction; the lower end of the loading jack 31 abuts on the pile foundation 2, and the upper end abuts on the lower end of the force transmission column 32.

[0127] Preferably, a steel plate 33 is provided at the lower end of the loading jack 31 , and the loading jack 31 abuts against the pile foundation 2 through the steel plate 33 ; and the upper end of the loading jack 31 also abuts against the force transmission column 32 through the steel plate 33 .

[0128] Exemplarily, a limiting groove is provided on the support assembly 11 at a location in contact with the force transmission column 32 so as to limit the force transmission column 32 in the limiting groove.

[0129] See also Figure 13 The embodiment of the present invention further provides a rapid static load test method, which uses the rapid static load test device described above and includes the following steps:

[0130] S1. Assemble the support assembly 11, the water tank 41 and the tilt monitoring member 42;

[0131] S2. The site where the pile foundation 2 is located is leveled, and the assembled rapid static load test apparatus is moved above the pile foundation 2, and the leveling support member 112 of the support assembly 11 is extended;

[0132] S3. Fill the water tank 41 to a preset water level;

[0133] S4. Observe the tilt state of the water surface in the water tank 41 by tilting the monitoring member 42, and level the test apparatus by leveling the support member 112;

[0134] S5. After the test device is level, install the loading component 3, connect the monitoring equipment, and remove the insurance component 6;

[0135] S6. Perform a single pile test on pile foundation 2;

[0136] S7. After the single pile test, the water in the water tank 41 is drained into the storage barrel, the loading assembly 3 and the anchor assembly 12 are removed; the leveling support 112 is retracted, the test apparatus is moved to the next test point, and the process proceeds to step S2 until all tests are completed;

[0137] S8. Dismantle the test device;

[0138] If the detection component 5 detects that the water tank 41 is tilted during step S6, the water tank 41 is opened and emptied urgently to lower the overall center of gravity of the test device by releasing water, thereby avoiding rollover.

[0139] It should be noted that in step S7 of the present application, the water discharged from the water tank 41 is recovered into the storage barrel for recycling.

[0140] In some embodiments, before leveling the test device through the leveling support 112, it is necessary to check the installation status of the safety component 6. When the installation status of the safety component 6 is normal assembly, the test device is leveled directly; when the safety component 6 is removed, the safety component 6 is installed first, and then the test device is leveled.

[0141] The rapid static load test method provided by the embodiment of the present invention has all the beneficial effects of the above-mentioned rapid static load test device due to the use of the above-mentioned test device, making the operation process of the single pile test simple and convenient, improving the test efficiency, and the operation process is safe and reliable.

[0142] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Rapid static load test device, characterized in that: include: A chassis, comprising a support assembly and multiple groups of anchoring assemblies, wherein the support assembly is used to support the chassis horizontally on the ground; multiple groups of the anchoring assemblies are connected in an array below the support assembly and are used to be anchored into the ground to fix the chassis; A loading assembly is provided at the center of the chassis, and an output end thereof is used to press the pile foundation vertically downward; a reaction force system comprising a water tank detachably connected to the chassis, with its center of gravity vertically aligned with the loading assembly, the water tank being filled with water to generate gravity to offset at least part of the upward reaction force of the loading assembly; as well as A detection component having a plurality of detection terminals respectively provided on the four side walls of the water tank, wherein the plurality of detection terminals are respectively used to detect the water level at the corresponding side walls of the water tank to determine the tilt angle of the water tank; The water tank comprises a bottom plate, two groups of fixed plates, two groups of movable plates, at least one group of elastic members and a locking member; the bottom plate is horizontally placed on the top surface of the support assembly; the two groups of fixed plates are fixedly connected to the front and rear ends of the bottom plate in the vertical direction; the two groups of movable plates are detachably connected to the two ends of the two groups of fixed plates in the vertical direction, the movable plate has a closed state in which it is sealed and abutted with the same end of the two fixed plates to form a closed cavity, and also has an open state in which the lower end is flipped outward to open the closed cavity; the two ends of the elastic member are respectively connected to the two groups of movable plates, and when the movable plate is in the closed state, the elastic member is in a compressed energy storage state; The locking member is used to lock the two groups of movable panels in the closed state; when the locking member is opened, the two groups of movable panels flip to the open state under the elastic force of at least one group of elastic members.

2. The rapid static load test device according to claim 1, characterized in that: The support assembly comprises: A supporting beam frame, the top surface of which is connected to the water tank; A plurality of groups of leveling support members are arranged in an array below the support beam, and are all telescopic in a vertical direction and supported on the ground; and At least four groups of moving parts are arranged in an array at four corners of the support beam, and the moving parts are used for rolling and supporting on the ground after the leveling support parts are contracted.

3. The rapid static load test device according to claim 1, characterized in that: The anchoring assembly comprises: A through-hole jack is connected below the support assembly; a pressure plate is connected to the lower end of the through-hole jack; a connector, disposed in the through-hole of the through-hole jack, with an upper end connected to the support assembly, the connector having a connector end extending vertically downward from the through-hole; and A recovery pile, the upper end of which is connected to the joint end, and the lower end of which is used to extend downward into the ground along the joint end; a groove suitable for the pressing plate to be embedded is provided radially on the pile body of the recovery pile; The through-core jack is used to drive the recovery pile into the ground by squeezing the pressure plate, and the joint end extends into the ground along with the recovery pile.

4. The rapid static load test device according to claim 3, characterized in that: The pile body of the recovery pile is provided with a plurality of mounting holes arranged in a horizontal direction at intervals, and a group of thorn head assemblies are provided in each mounting hole. The thorn head assembly includes a thorn head and an electromagnetic driving component. The thorn head is used to penetrate into the ground in a horizontal direction or retract into the mounting hole under the drive of the electromagnetic driving component.

5. The rapid static load test device according to claim 4, characterized in that: The mounting hole is further provided with: A baffle is provided at the protruding end of the thorn head assembly and is connected to the tail end of the thorn head assembly via an elastic rope; A limiting plate is provided on the hole wall of the mounting hole, and a plurality of leakage holes are provided on the limiting plate at intervals, and the leakage holes are used to install balls that roll and support the thorn head; The baffle is used to intercept part of the external soil; the leakage hole is also used to leak part of the soil entering the installation hole into the pile head of the recovery pile.

6. The rapid static load test device according to claim 1, characterized in that: The locking member comprises: a fixing rope, wound around the outer circumference of the water tank, used to keep the movable panel in the closed state, and provided with a fastener; a plurality of emergency switches, spaced apart on the fixing rope and connected to the fastener; and a tilt monitoring component, provided on the water tank and connected to the emergency switch, for monitoring the tilt angle of the water tank; Wherein, when the tilt monitoring component detects that the tilt angle of the water tank exceeds a set value, at least one of the emergency switches is triggered to close, and when at least one of the emergency switches is closed, the fastener is automatically disconnected.

7. The rapid static load test device according to claim 6, characterized in that: The tilt monitoring component includes: a support, fixed on the top of the fixed plate or the movable plate; A connecting rod assembly having an active end extending vertically into the water tank, the active end being connected to a float; the connecting rod assembly also having a driven end for inserting into the emergency switch; Wherein, after the float tilts along with the water surface in the water tank to a value exceeding a preset angle, the float drives the driven end to move to trigger the emergency switch.

8. The rapid static load test device according to claim 7, characterized in that: The connecting rod assembly comprises: A rotating rod is rotatably connected to the support; and the axial direction of the rotating rod is parallel to the side wall surface of the water tank; an active rod assembly, one end of which is fixedly connected to the rotating rod, and the other end of which extends downward into the water tank and is connected to the float; and One end of the driven rod is rotatably connected to the rotating rod, and the other end can be inserted into the emergency switch downward along a vertical direction to trigger the emergency switch.

9. Rapid static load test method, characterized in that: The rapid static load test device according to any one of claims 1 to 8 comprises the following steps: S1. Assemble the support assembly, the water tank and tilt monitoring member; S2. The site where the pile foundation is located is leveled, and the assembled rapid static load test apparatus is moved above the pile foundation, and the leveling support member of the support assembly is extended; S3. Fill the water tank to a preset water level; S4. Observe the tilt state of the water surface in the water tank through the tilt monitoring member, and level the chassis through the leveling support member; S5. After the test apparatus is level, install the anchor assembly to secure the chassis; install the loading assembly and connect the monitoring equipment; S6. Perform a single pile test on the pile foundation; S7. After the single pile test, the water in the water tank is drained into the storage barrel, the loading assembly and the anchor assembly are removed; the leveling support is retracted, the test apparatus is moved to the next test point, and step S2 is entered until all tests are completed; S8. Dismantle the test device; If the detection component detects that the water tank is tilted during step S6, the water tank is opened and emptied urgently.

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