Fabricated building structure connection strength detection device and method based on BIM

Abstract

The invention discloses a BIM-based fabricated building structure connection strength detection device and method, and relates to the technical field of BIM application, the BIM-based fabricated building structure connection strength detection device comprises a base, a detection mechanism and a limiting mechanism are separately arranged above the base, the detection mechanism comprises a fixing plate and a prefabricated column main body, the bottom surface of the fixing plate is connected with two fixing columns, and the fixing columns are connected with the limiting mechanism; the bottom ends of the two fixing columns are connected with the upper surface of the base, the bottom face of the fixing plate is connected with a fixing frame and a hydraulic cylinder, and the telescopic end of the hydraulic cylinder is connected with a lower pressing plate. According to the BIM-based fabricated building structure connection strength detection device, a hydraulic cylinder, a first threaded rod, a lower pressing plate, a pressing plate, a prefabricated column main body, a strain gauge sensor, a pressure sensor, a data acquisition module and a BIM integration module are arranged to cooperate with one another; whether the strength of the connecting parts between the prefabricated parts in the fabricated building meets the design requirement or not can be detected, and then subsequent building quality evaluation and management are facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of BIM application, and in particular to a BIM-based prefabricated building structure connection strength detection device and method. Background Art

[0002] BIM is the building information model, which refers to the digital expression of the physical and functional characteristics of construction projects and facilities throughout their life cycle, and the general term for the process and results of design, construction and operation based on this. As an important part of the informatization of the construction industry, BIM can be applied to various stages of project planning, investigation, design, construction, operation and maintenance, and realize data sharing among all participants in the entire life cycle of the project based on the same multi-dimensional model.

[0003] At present, today's building information models can often only digitally express the information of the building, but cannot collect and record the test results of the connection strength of the building structure. In particular, it is impossible to test whether the strength of the connection parts between the prefabricated components in the prefabricated building meets the design requirements, and it is impossible to integrate the test data with the relevant information in the BIM model, which is not convenient for the subsequent building quality assessment and management.

[0004] The patent application with publication number CN118817486A discloses a strength testing device for assembled building structure components, including a base, a fixing mechanism is arranged on the top of the base, and reinforcement mechanisms are arranged on both sides of the top of the fixing mechanism, a moving mechanism is arranged on one side of the base, a positioning mechanism is arranged on the other side of the base, and a testing mechanism is arranged between the tops of the positioning mechanism and the moving mechanism, and the testing mechanism includes a fixing frame, a hydraulic rod and a testing plate, and the two ends of the fixing frame are respectively connected to the tops of the positioning mechanism and the moving mechanism, and the two ends of the hydraulic rod are respectively connected to the top of the testing plate and the bottom of the fixing frame by bolts. This application scheme cannot solve the above-mentioned technical problems of this application. Summary of the invention

[0005] The purpose of the present invention is to provide a BIM-based prefabricated building structure connection strength detection device to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a BIM-based prefabricated building structure connection strength detection device, comprising a base, and a detection mechanism and a limit mechanism are respectively arranged above the base;

[0007] The detection mechanism includes a fixed plate and a prefabricated column body, the bottom surface of the fixed plate is connected to two fixed columns, the bottom ends of the two fixed columns are connected to the upper surface of the base, the bottom surface of the fixed plate is connected to a fixed frame and a hydraulic cylinder, the telescopic end of the hydraulic cylinder is connected to a lower pressure plate, the inner wall of the fixed frame is threadedly connected to a first threaded rod, the outer surface of the first threaded rod is threadedly connected to the inner wall of the fixed plate, the outer surface of the first threaded rod is threadedly connected to a first bearing, the bottom end of the first bearing is connected to a pressing plate, the upper surface of the base is connected to a BIM integration module and a data acquisition module, and the outer surface of the data acquisition module is connected There are two connecting wires, and one end of the two connecting wires away from the data acquisition module is commonly connected to a strain gauge sensor, the inner wall of the strain gauge sensor is in contact with the outer surface of the prefabricated column body, a pressure sensor is arranged above the prefabricated column body, and two slide grooves are arranged on the upper surface of the base, each of which is slidably connected to a sliding block, and the inner wall of each slide groove is connected to a first electric telescopic rod, and the telescopic end of each of the first electric telescopic rods is connected to the right side of the sliding block, and the upper surface of each sliding block is connected to the bottom end of the fixed column, and the BIM integrated module is electrically connected to the data acquisition module through a wire;

[0008] The limiting mechanism includes two support plates, and the side surfaces of the two support plates close to each other are connected to the second electric telescopic rod, and the telescopic end of each second electric telescopic rod is connected to a clamping plate, the upper surface of the base is matched with a placing table, and the upper surface of the placing table is provided with a slot, and the inside of the slot is slidably connected to a sliding plate, and a second bearing is installed on the side of the sliding plate, and the side wall of the placing table is threadedly connected to a second threaded rod, and the outer surface of the second threaded rod is connected to the inner ring of the second bearing.

[0009] Preferably, the outer surface of each of the second electric telescopic rods is connected to a protection seat, and the side surfaces of the two protection seats that are away from each other are connected to the side surfaces of the two support plates that are close to each other.

[0010] Preferably, the outer surface of each of the first electric telescopic rods is connected to a dustproof shell, and the right side surface of each of the dustproof shells is connected to the inner wall of the slide groove.

[0011] Preferably, a protective shell is connected to the outer surface of the hydraulic cylinder, and the upper surface of the protective shell is connected to the bottom surface of the fixing plate.

[0012] Preferably, the outer surface of each of the fixing columns is connected to a fixing ring, and the top end of each of the fixing rings is connected to the bottom surface of the fixing plate.

[0013] Preferably, two support frames are connected to the outer surface of the fixing frame, and the upper surface of each of the support frames is connected to the bottom surface of the fixing plate.

[0014] Preferably, the outer surface of the telescopic end of the hydraulic cylinder is connected to a reinforcement plate, and the bottom surface of the reinforcement plate is connected to the upper surface of the lower pressure plate.

[0015] Preferably, the inner wall of the reinforcement plate is threadedly connected with a plurality of identical reinforcement bolts, and the outer surface of each group of the reinforcement bolts is threadedly connected with the inner wall of the lower pressure plate.

[0016] Preferably, the outer surface of the telescopic end of each of the second electric telescopic rods is connected to a limiting ring, and ends of the two limiting rings that are close to each other are connected to side surfaces of the two clamping plates that are away from each other.

[0017] Preferably, four supporting legs are connected to the bottom surface of the base, two reinforcement rings are connected to the outer surface of each group of the supporting legs, and the top of each group of the reinforcement rings is connected to the bottom surface of the base.

[0018] The present invention also discloses a detection method, including a BIM-based prefabricated building structure connection strength detection device,

[0019] First, the BIM model is imported into the software system of the detection device to determine the connection parts of the prefabricated building structure that need to be detected, and the location, type, design strength requirements and other information of these parts are marked in the BIM model;

[0020] At the same time, pressure sensors and strain gauge sensors are installed at the connection parts of the actual building structure prefabricated column body to ensure that the sensors fit tightly with the connection surface and can accurately sense stress and strain conditions;

[0021] Loading: Start the loading device and apply load to the connection parts according to the predetermined loading scheme. During the loading process, the telescopic end of the hydraulic cylinder is extended to drive the lower pressure plate to move downward, thereby generating a force to load the connection parts of the prefabricated column body, simulating various loads that the building may bear during actual use. When it is necessary to test the connection of small prefabricated components, the first threaded rod is rotated to drive the compression plate to descend to provide a stable loading force;

[0022] Data processing: The data acquired by the sensor, including strain values ​​and pressure values, are collected in real time through the data acquisition module, and the data are transmitted to the BIM integration module. The detection data is associated with the corresponding connection parts in the BIM model through the BIM integration module. By comparing the detection data with the design strength requirements, the strength status of the connection parts can be intuitively displayed in the BIM model.

[0023] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0024] The present invention can detect whether the strength of the connection parts between each prefabricated component in the assembled building meets the design requirements by providing a hydraulic cylinder, a first threaded rod, a lower pressure plate, a clamping plate, a prefabricated column body, a strain gauge sensor, a pressure sensor, a data acquisition module and a BIM integration module that cooperate with each other, which can greatly improve the accuracy and efficiency of the detection, and can integrate the detection data with the relevant information in the BIM model, so as to facilitate the subsequent building quality evaluation and management.

[0025] By providing a second electric telescopic rod, a clamping plate, a placement table, a card slot, a second threaded rod and a sliding plate that cooperate with each other, the position of assembled building components of different shapes such as round and rectangular shapes can be fixedly restricted, thereby achieving the purpose of fixed limiting and further improving the detection accuracy of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the BIM-based prefabricated building structure connection strength detection device of the present invention;

[0027] Figure 2 It is a structural schematic diagram of the data acquisition module of the present invention;

[0028] Figure 3 It is a structural schematic diagram of the strain gauge sensor of the present invention;

[0029] Figure 4 It is a structural schematic diagram of the sliding block of the present invention;

[0030] Figure 5 It is a structural schematic diagram of the lower pressing plate of the present invention;

[0031] Figure 6 It is a structural schematic diagram of the pressing plate of the present invention;

[0032] Figure 7 It is a schematic diagram of the structure of the splint of the present invention;

[0033] Figure 8 It is a structural schematic diagram of the sliding plate of the present invention;

[0034] Fig. 9 It is a structural schematic diagram of the base of the present invention.

[0035] Among them: 1. base; 2. detection mechanism; 201. fixed plate; 202. fixed column; 203. slide; 204. BIM integration module; 205. sliding block; 206. data acquisition module; 207. first electric telescopic rod; 208. prefabricated column body; 209. connecting line; 210. strain gauge sensor; 211. pressure sensor; 212. hydraulic cylinder; 213. lower pressure plate; 214. first threaded rod; 215. fixed frame; 21 6. First bearing; 217. Clamping plate; 3. Limiting mechanism; 301. Support plate; 302. Second electric telescopic rod; 303. Clamping plate; 304. Placement table; 305. Second threaded rod; 306. Slot; 307. Sliding plate; 308. Second bearing; 4. Protective seat; 5. Dustproof housing; 6. Protective shell; 7. Fixing ring; 8. Support frame; 9. Reinforcement plate; 10. Reinforcement bolt; 11. Support foot; 12. Reinforcement ring; 13. Limiting ring. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Example 1

[0038] See also Figure 1-9A BIM-based prefabricated building structure connection strength detection device comprises a base 1, a detection mechanism 2 and a limiting mechanism 3 are respectively arranged above the base 1, the detection mechanism 2 comprises a fixed plate 201 and a prefabricated column body 208, the bottom surface of the fixed plate 201 is connected with two fixed columns 202, the bottom ends of the two fixed columns 202 are connected to the upper surface of the base 1, the bottom surface of the fixed plate 201 is connected with a fixed frame 215 and a hydraulic cylinder 212, the telescopic end of the hydraulic cylinder 212 is connected with a lower pressure plate 213, the inner wall of the fixed frame 215 is threadedly connected with a first threaded rod 214, the outer surface of the first threaded rod 214 is threadedly connected with the inner wall of the hole on the fixed plate 201, the outer surface of the first threaded rod 214 is threadedly connected with a first bearing 216, the bottom end of the first bearing 216 is connected with a pressing plate 217, the upper surface of the base 1 is connected with a BIM integrated Module 204 and data acquisition module 206, the outer surface of the data acquisition module 206 is connected to two connecting wires 209, and one end of the two connecting wires 209 away from the data acquisition module 206 is commonly connected to a strain gauge sensor 210, the inner wall of the strain gauge sensor 210 is in contact with the outer surface of the prefabricated column body 208, and a pressure sensor 211 is arranged above the prefabricated column body 208. Two slide grooves 203 are provided on the upper surface of the base 1, and a sliding block 205 is slidably connected to the inside of each slide groove 203, and a first electric telescopic rod 207 is connected to the inner wall of each slide groove 203, and the telescopic end of each first electric telescopic rod 207 is connected to the right side of the sliding block 205, and the upper surface of each sliding block 205 is connected to the bottom end of the fixed column 202, and the BIM integration module 204 is electrically connected to the data acquisition module 206 through a wire;

[0039] The outer surface of each first electric telescopic rod 207 is connected to a dustproof housing 5, and the right side of each dustproof housing 5 is connected to the inner wall of the slide groove 203. The dustproof housing 5 can protect the first electric telescopic rod 207 from being disturbed by external dust and other impurities.

[0040] The outer surface of the hydraulic cylinder 212 is connected with a protective shell 6, and the upper surface of the protective shell 6 is connected to the bottom surface of the fixed plate 201. The protective shell 6 can protect the hydraulic cylinder 212, and has a strong protective effect to prevent it from being damaged by the outside during use;

[0041] The outer surface of each fixing column 202 is connected to a fixing ring 7, and the top of each fixing ring 7 is fixed to the bottom surface of the fixing plate 201. The fixing ring 7 can reinforce the fixing column 202 and the fixing plate 201 to enhance the stability of the device;

[0042] The outer surface of the fixing frame 215 is connected to two support frames 8 extending from both ends, and the upper surface of each support frame 8 is connected to the bottom surface of the fixing plate 201. The support frames 8 can fix the fixing frame 215 and the fixing plate 201 to play a role of fixed support and prevent them from moving during use;

[0043] The outer surface of the telescopic end of the hydraulic cylinder 212 is connected with a reinforcing plate 9, and the bottom surface of the reinforcing plate 9 is connected to the upper surface of the lower pressing plate 213. The reinforcing plate 9 can reinforce the hydraulic cylinder 212 and the lower pressing plate 213, effectively avoiding the problem of positional displacement and instability during use;

[0044] The inner wall of the hole in the reinforcement plate 9 is threadedly connected with a number of identical reinforcement bolts 10, and the outer surface of each group of reinforcement bolts 10 is threadedly connected to the inner wall of the lower pressure plate 213. The reinforcement bolts 10 can be used to reinforce the reinforcement plate 9 and the lower pressure plate 213 to prevent their positions from shaking and shifting.

[0045] The specific detection method of this embodiment is as follows: first, the BIM model is imported into the software system of the detection device, the connection parts of the prefabricated building structure that need to be detected are determined, and the location, type and design strength requirements of these parts are marked in the BIM model. At the same time, the pressure sensor 211 and the strain gauge sensor 210 are installed at the connection parts of the prefabricated column body 208 of the actual building structure to ensure that the sensor fits tightly with the connection surface and can accurately sense the stress and strain conditions. Then, the loading device is started to apply a load to the connection part according to a predetermined loading scheme. During the loading process, the telescopic end of the hydraulic cylinder 212 is extended to drive the lower pressure plate 213 to move downward, thereby generating a force to load the connection part of the prefabricated column body 208. This loading method can simulate various loads that the building may bear during actual use, such as gravity load and wind load, and when it is necessary to detect the connection of small prefabricated components, the first threaded rod 214 can be rotated to drive the compression The plate 217 is lowered to provide a stable loading force, and then the data acquired by the sensor, including strain values ​​and pressure values, is collected in real time through the data acquisition module 206, and the data is transmitted to the BIM integration module 204. The detection data is associated with the corresponding connection parts in the BIM model through the BIM integration module 204. By comparing the detection data with the design strength requirements, the strength status of the connection parts is intuitively displayed in the BIM model. If the measured stress of a connection part exceeds the design allowable stress, the part in the BIM model can be displayed with a red mark, and a detailed detection report can be generated. The report includes the location of the connection part, the measured strength data and the comparison with the design requirements. It can effectively avoid the problem that it is impossible to detect whether the strength of the connection parts between the prefabricated components in the prefabricated building meets the design requirements, and it is impossible to integrate the detection data with the relevant information in the BIM model, which makes it inconvenient for subsequent building quality evaluation and management.

[0046] Example 2

[0047] See also Figure 1-9 The limiting mechanism 3 includes two support plates 301, and the side surfaces of the two support plates 301 close to each other are connected to the second electric telescopic rod 302, and the telescopic end of each second electric telescopic rod 302 is connected to the clamping plate 303. The upper surface of the base 1 is matched with a placing table 304, and the upper surface of the placing table 304 is provided with a card slot 306, and the inside of the card slot 306 is slidably connected to a sliding plate 307, and the side surface of the sliding plate 307 is installed with a second bearing 308, and the side wall of the placing table 304 is threadedly connected to a second threaded rod 305, and the outer surface of the second threaded rod 305 is connected to the inner ring of the second bearing 308;

[0048] The outer surface of each second electric telescopic rod 302 is connected to a protective seat 4, and the side surfaces of the two protective seats 4 that are away from each other are connected to the side surfaces of the two support plates 301 that are close to each other. The protective seats 4 can protect the second electric telescopic rod 302 and effectively prevent it from being affected by the outside world during use;

[0049] The outer surface of the telescopic end of each second electric telescopic rod 302 is connected to a limit ring 13, and the ends of the two limit rings 13 that are close to each other are connected to the side surfaces of the two clamping plates 303 that are away from each other. The limit rings 13 can reinforce the second electric telescopic rod 302 and the clamping plates 303 to play a role in fixing and limiting, thereby preventing them from shaking during use;

[0050] Four supporting feet 11 are connected to the bottom surface of the base 1, and the outer surface of each group of supporting feet 11 is connected to two reinforcement rings 12. The top of each group of reinforcement rings 12 is connected to the bottom surface of the base 1. The base 1 can be stably supported by the supporting feet 11 and the reinforcement rings 12, and the supporting feet 11 are made of materials with anti-slip and buffering functions, which can effectively prevent the device from shifting during operation.

[0051] The specific implementation method of this embodiment is as follows: first, the assembled component to be inspected is placed in the slot 306 in the placement table 304, and then the telescopic end of the second electric telescopic rod 302 is extended to drive the clamping plate 303 to move, so that the position of the assembled component in the slot 306 can be fixed and limited, and the sliding plate 307 can be driven to slide in the slot 306 by rotating the second threaded rod 305, thereby facilitating the fixed limit of the position of assembled building components of different shapes such as round and rectangular shapes, and further improving the detection accuracy of the device.

[0052] Example 3

[0053] See also Figure 1-9The specific implementation method of this embodiment is as follows: first, the BIM model is imported into the software system of the detection device, the connection parts of the prefabricated building structure that need to be detected are determined, and the location, type and design strength requirements of these parts are marked in the BIM model. At the same time, the pressure sensor 211 and the strain gauge sensor 210 are installed at the connection parts of the prefabricated column body 208 of the actual building structure to ensure that the sensor fits tightly with the connection surface and can accurately sense the stress and strain conditions. Then, the loading device is started to apply a load to the connection part according to a predetermined loading scheme. During the loading process, the telescopic end of the hydraulic cylinder 212 is moved forward. The first threaded rod 214 is rotated to drive the pressing plate 217 to move downward, thereby generating a force to load the connection part of the prefabricated column body 208. This loading method can simulate various loads that the building may bear during actual use, such as gravity load and wind load. When it is necessary to detect the connection of small assembled components, the first threaded rod 214 can be rotated to drive the pressing plate 217 to move downward, which can provide a stable loading force. Then, the data acquired by the sensor, including strain value and pressure value, are collected in real time through the data acquisition module 206, and the data are transmitted to the BIM integration module 204. The test data is associated with the corresponding connection parts in the BIM model. By comparing the test data with the design strength requirements, the strength status of the connection parts can be intuitively displayed in the BIM model. If the measured stress of a connection part exceeds the design allowable stress, the part can be displayed with a red mark in the BIM model, and a detailed test report can be generated. The report includes the location of the connection part, the measured strength data and the comparison with the design requirements. This can effectively avoid the inability to test whether the strength of the connection parts between the prefabricated components in the prefabricated building meets the design requirements, and the inability to compare the test data with the BIM model. The relevant information is not integrated, which makes it inconvenient for subsequent building quality assessment and management. By placing the prefabricated component to be inspected in the slot 306 in the placement table 304, and then extending the telescopic end of the second electric telescopic rod 302 to drive the clamping plate 303 to move, the position of the prefabricated component in the slot 306 can be fixed and limited, and the sliding plate 307 can be driven to slide in the slot 306 by rotating the second threaded rod 305, thereby facilitating the fixed position of prefabricated building components of different shapes such as round and rectangular shapes, and further improving the detection accuracy of the device.

[0054] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0055] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0056] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A BIM-based prefabricated building structure connection strength detection device, comprising a base (1), characterized in that: A detection mechanism (2) and a limit mechanism (3) are respectively arranged above the base (1); The detection mechanism (2) comprises a fixing plate (201) and a prefabricated column body (208). The bottom surface of the fixed plate (201) is connected to two fixed columns (202), the bottom ends of the two fixed columns (202) are connected to the upper surface of the base (1), the bottom surface of the fixed plate (201) is connected to a fixed frame (215) and a hydraulic cylinder (212), the telescopic end of the hydraulic cylinder (212) is connected to a lower pressure plate (213), the inner wall of the fixed frame (215) is threadedly connected to a first threaded rod (214), the outer surface of the first threaded rod (214) is threadedly connected to the inner wall of a hole on the fixed plate (201), the outer surface of the first threaded rod (214) is connected to a first bearing (216), the bottom end of the first bearing (216) is connected to a pressing plate (217), and the upper surface of the base (1) is connected to a BIM integration module (204) and a data acquisition module (206).

2. The BIM-based prefabricated building structure connection strength detection device according to claim 1, characterized in that: The limiting mechanism (3) comprises two supporting plates (301), and the side surfaces of the two supporting plates (301) close to each other are connected to the second electric telescopic rod (302), and the telescopic end of each second electric telescopic rod (302) is connected to a clamping plate (303). The upper surface of the base (1) is matched with a placing table (304), and the upper surface of the placing table (304) is provided with a slot (306), and the interior of the slot (306) is slidably connected to a sliding plate (307), and the side surface of the sliding plate (307) is installed with a second bearing (308), and the side wall of the placing table (304) is threadedly connected to a second threaded rod (305), and the outer surface of the second threaded rod (305) is connected to the inner ring of the second bearing (308).

3. The BIM-based prefabricated building structure connection strength detection device according to claim 2, characterized in that: The outer surface of the data acquisition module (206) is connected to two connecting wires (209), and one end of the two connecting wires (209) away from the data acquisition module (206) is commonly connected to a strain gauge sensor (210), the inner wall of the strain gauge sensor (210) is in contact with the outer surface of the prefabricated column body (208), and a pressure sensor (211) is arranged above the prefabricated column body (208). The upper surface of the base (1) is provided with two slide grooves (203), and the interior of each of the slide grooves (203) is slidably connected to a sliding block (205), and the inner wall of each of the slide grooves (203) is connected to a first electric telescopic rod (207), and the telescopic end of each of the first electric telescopic rods (207) is connected to the side of the sliding block (205), and the upper surface of each of the sliding blocks (205) is connected to the bottom end of the fixed column (202), and the BIM integrated module (204) is electrically connected to the data acquisition module (206) through a wire.

4. The BIM-based prefabricated building structure connection strength detection device according to claim 3, characterized in that: The outer surface of each second electric telescopic rod (302) is connected to a protective seat (4), and the side surfaces of the two protective seats (4) that are away from each other are connected to the side surfaces of the two support plates (301) that are close to each other; the outer surface of each first electric telescopic rod (207) is connected to a dustproof outer shell (5), and the right side surface of each dustproof outer shell (5) is connected to the inner wall of the slide groove (203).

5. The BIM-based prefabricated building structure connection strength detection device according to claim 3, characterized in that: The outer surface of the hydraulic cylinder (212) is connected to a protective shell (6), and the upper surface of the protective shell (6) is connected to the bottom surface of the fixing plate (201).

6. The BIM-based prefabricated building structure connection strength detection device according to claim 3, characterized in that: The outer surface of each fixing column (202) is connected to a fixing ring (7), and the top end of each fixing ring (7) is connected to the bottom surface of the fixing plate (201).

7. The BIM-based prefabricated building structure connection strength detection device according to claim 3, characterized in that: Two support frames (8) are connected to the outer surface of the fixing frame (215), and the upper surface of each of the support frames (8) is connected to the bottom surface of the fixing plate (201).

8. The BIM-based prefabricated building structure connection strength detection device according to claim 3, characterized in that: The outer surface of the telescopic end of the hydraulic cylinder (212) is connected to a reinforcing plate (9), and the bottom surface of the reinforcing plate (9) is connected to the upper surface of the lower pressure plate (213); the inner wall of the reinforcing plate (9) is threadedly connected to a plurality of identical reinforcing bolts (10), and the outer surface of each group of the reinforcing bolts (10) is threadedly connected to the inner wall of the lower pressure plate (213).

9. The BIM-based prefabricated building structure connection strength detection device according to claim 3, characterized in that: The outer surface of the telescopic end of the second electric telescopic rod (302) is connected to a limiting ring (13), and the ends of the two limiting rings (13) that are close to each other are connected to the side surfaces of the two clamping plates (303) that are away from each other; the bottom surface of the base (1) is connected to four supporting feet (11), and the outer surface of each group of supporting feet (11) is connected to two reinforcement rings (12), and the top end of each group of reinforcement rings (12) is connected to the bottom surface of the base (1).

10. A detection method, comprising a BIM-based prefabricated building structure connection strength detection device according to any one of claims 1 to 9, characterized in that: First, the BIM model is imported into the software system of the detection device to determine the connection parts of the prefabricated building structure that need to be detected, and the location, type, design strength requirements and other information of these parts are marked in the BIM model; At the same time, pressure sensors and strain gauge sensors are installed at the connection parts of the actual building structure prefabricated column body to ensure that the sensors fit tightly with the connection surface and can accurately sense stress and strain conditions; Loading: Start the loading device and apply load to the connection parts according to the predetermined loading scheme. During the loading process, the telescopic end of the hydraulic cylinder is extended to drive the lower pressure plate to move downward, thereby generating a force to load the connection parts of the prefabricated column body, simulating various loads that the building may bear during actual use. When it is necessary to test the connection of small prefabricated components, the first threaded rod is rotated to drive the compression plate to descend to provide a stable loading force; Data processing: The data acquired by the sensor, including strain values ​​and pressure values, are collected in real time through the data acquisition module, and the data are transmitted to the BIM integration module. The detection data is associated with the corresponding connection parts in the BIM model through the BIM integration module. By comparing the detection data with the design strength requirements, the strength status of the connection parts can be intuitively displayed in the BIM model.

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