Visual intelligent monitoring post-cast strip prefabricated splice plate construction method

Abstract

The invention belongs to the technical field of building construction, and particularly relates to a visual intelligent monitoring post-cast strip prefabricated splice plate construction method which comprises the steps that a prefabricated splice plate is designed, the size of the prefabricated splice plate is suitable for covering an outer wall post-cast strip, and the prefabricated splice plate comprises a preset structure and a fixing structure; prefabricated splice plates are produced according to design requirements, and film covering maintenance is carried out; a prefabricated splice plate is installed at the position of the outer wall post-cast strip, so that the outer wall post-cast strip is covered with the prefabricated splice plate, and the prefabricated splice plate is fixed through a fixing structure; according to the deformation monitoring requirement, the monitoring point positions and the number are determined, monitoring equipment is installed at the preset structure of the prefabricated splice plate, and data connection between the monitoring equipment and the visual monitoring platform is established; and the visual monitoring platform is used for receiving and processing the structural deformation data acquired by the monitoring equipment so as to monitor the deformation of the building structure. According to the method, safe, rapid and temporary sealing of the post-cast strip area is achieved, and meanwhile real-time, dynamic, visual and automatic monitoring and early warning of deformation of the main body structure are achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of building construction, and particularly relates to a construction method for visual intelligent monitoring of post-cast strip prefabricated splicing plates. Background Art

[0002] In modern building projects, especially large or complex concrete structures, in order to reduce structural cracking caused by temperature stress and uneven settlement, it is usually necessary to set post-cast strips in beams, slabs, walls, etc., including temperature post-cast strips and settlement post-cast strips. According to conventional construction specifications, the temperature post-cast strip can generally be closed about 60 days after the concrete pouring is completed, and the settlement post-cast strip usually needs to be closed after a period of time (such as 60 days) after the main structure is capped.

[0003] However, during the construction stage of the underground structure, the safety and stability of the foundation pit are of crucial importance. In order to eliminate the potential safety hazards of the foundation pit slope or retaining structure as early as possible and provide a working surface for subsequent construction, it is often necessary to backfill the fat pocket formed during the foundation pit excavation as early as possible. This creates a contradiction: on the one hand, the post-cast strip needs to remain open until the closing conditions are met, and on the other hand, the fat pocket needs to be backfilled in advance. Especially for the post-cast strip located at the exterior wall of the basement, its long-term non-closure directly hinders the backfilling operation of the fat pocket on the outer side of the exterior wall.

[0004] In the prior art, to solve this problem, sometimes temporary brick walls are used to block the opening of the post-cast strip for fat pocket backfilling. However, this temporary masonry method has obvious defects: firstly, the masonry work consumes a large amount of labor, with low construction efficiency and prolonged construction period; secondly, the strength and stability of the temporary masonry are limited, and there are certain safety risks when bearing the lateral pressure of the backfill soil, and collapse may occur; thirdly, the temporary masonry needs to be demolished when closing the post-cast strip later, increasing the additional workload and construction waste.

[0005] In addition, during the construction process of the main structure, deformation monitoring of the settlement and horizontal displacement of the structure is an important link to ensure construction safety. Traditional deformation monitoring methods mostly rely on manual regular use of measuring instruments (such as level gauges, total stations) for observation, or monitoring points are arranged around the foundation pit. Manual monitoring not only has limited frequency and high labor intensity, but also has lags in data collection, processing, and feedback, making it difficult to achieve real-time dynamic monitoring; at the same time, manual reading and external observation points may introduce certain measurement errors, affecting the accuracy of the monitoring results. When the structural deformation approaches or exceeds the warning value, the early warning is often not timely enough, and the best opportunity to take countermeasures may be missed.

[0006] Therefore, how to safely and efficiently achieve early backfilling of the fat pocket while ensuring that the post-cast strip is closed as required with a delay, and at the same time improve the real-time, accuracy, and intelligent level of the deformation monitoring of the main structure is a technical problem urgently to be solved in the current building construction field. Summary of the Invention

[0007] Object of the Invention: The object of the present invention is to provide a construction method for a precast splicing plate for a visual intelligent monitoring post-cast strip, aiming at the deficiencies of the existing technology, to overcome the contradiction between the treatment of the post-cast strip and the backfilling of the fat groove in the existing technology, and the deficiencies of traditional structural deformation monitoring.

[0008] Technical Solution: The construction method for a precast splicing plate for a visual intelligent monitoring post-cast strip of the present invention is applied to the treatment of the external wall post-cast strip of a building structure, and includes the following steps: S1: Design a precast splicing plate, the size of the precast splicing plate is suitable for covering the external wall post-cast strip, and includes a preset structure for installing monitoring equipment and a fixing structure for fixing to the building structure; S2: Produce the precast splicing plate according to the design requirements and carry out film curing; S3: Install the precast splicing plate at the external wall post-cast strip, so that it covers the external wall post-cast strip, and fix the precast splicing plate by using the fixing structure; S4: According to the needs of deformation monitoring, determine the monitoring points and quantities, install monitoring equipment at the preset structure of the precast splicing plate, and establish a data connection between the monitoring equipment and the visual monitoring platform; S5: Use the visual monitoring platform to receive and process the structural deformation data collected by the monitoring equipment to realize the monitoring of the deformation of the building structure.

[0009] To further improve the above technical solution, in the step of designing the precast splicing plate: According to the construction drawings of the building structure, analyze and determine the specific position, width, and length (or height) of the external wall post-cast strip; Based on the size and position information of the post-cast strip, deepen the design of the precast splicing plate. The key design parameters include: Width: The width of the precast splicing plate is designed to be greater than the width of the external wall post-cast strip, preferably the width of the post-cast strip plus 20 cm (that is, covering 10 cm of the edge of the post-cast strip on each side) to ensure complete coverage and provide a lapping allowance; Length / Height: According to the total length or height of the post-cast strip, determine the number of precast splicing plates required. The length (or height) of a single precast splicing plate is preferably set between 2 m and 2.5 m to facilitate production, transportation, and hoisting, and ensure an appropriate aspect ratio (such as not greater than 3:1) to prevent fracture. Thickness: Considering the requirement of bearing the lateral pressure of the backfill soil and its own strength, the thickness of the precast splicing plate is preferably 8 cm to 10 cm. Material and Strength: The precast splicing plate is preferably cast with C30 concrete and internally configured with a steel mesh or a steel skeleton to ensure its overall strength and crack resistance performance.

[0010] A preset structure for installing monitoring equipment is set on the precast splicing plate. For example, a lifting hole with a diameter of about 4 cm is reserved in the middle of the plate width direction and at the upper part in the vertical direction (such as 60 - 80 cm from the top). This hole can also serve as the installation hole for the monitoring equipment. A fixing structure for fixing the precast splicing plate to the main structure is set on the precast splicing plate. For example, embedded fixing steel bars, such as steel bars with a diameter of 6 mm and a total length of 20 cm, of which 5 cm is embedded into the plate and 15 cm is exposed, for subsequent connection with the reserved steel bars in the post-cast strip.

[0011] For the case of multiple pieces to be spliced, interlocking rabbet structures are preset at the upper and lower splicing edges of the precast splicing plate. For example, rabbets with a width of 5 cm are used to improve the tightness and stability of the splicing. The bottommost and topmost plates are correspondingly provided with rabbets only on one side.

[0012] Furthermore, according to the requirements of the detailed design, the required number of precast splicing plates is produced in the factory or on-site precast site. During the production process, attention is paid to the formation of the rabbet structure and the accurate embedding of the fixing steel bars. After the concrete is poured, it is cured by covering with a film. When the strength reaches 70%, it can be lifted to the stacking area (the stacking layer number does not exceed 6 layers). When it reaches 75%, it can be transported. When it reaches 100%, it can be used for installation.

[0013] Furthermore, after the precast splicing plate reaches 100% design strength, it is installed in the pre-determined serial number order, including the following sub-steps: Base treatment: Before installation, clean the bottom of the fat groove, remove garbage, sundries, accumulated water, and silt to ensure that the base is firm and dry. At the same time, treat the base where the basement exterior wall contacts the precast plate to ensure that it is firm, flat, without burrs, without sanding, without honeycomb holes, and make a circular chamfer (such as with a diameter of 5 cm) at the internal corner; Lifting and positioning: Use a lifting device to hoist the precast splicing plate to the installation position. Install it in the order from bottom to top. Place the precast splicing plate accurately at the post-cast strip of the exterior wall, making it centered to cover the post-cast strip, and covering 10 cm of the wall on both sides. Pay attention to the splicing surface facing upwards when installing the bottom plate; Fixing: Utilize the reserved fixing steel bars on the precast splicing plate to connect and fix with the reserved steel bars in the post-cast strip (or in the exterior wall main structure). The connection method can be binding or welding. After ensuring that each plate is firmly fixed, then install the upper plate; Splicing: When installing the upper plate, utilize the preset rabbet structure to overlap with the lower plate that has been installed and fixed, and finally fix it through the fixing steel bars of the upper plate to form a continuous covering surface; Waterproof treatment: After the installation of precast splicing plates is completed and the monitoring equipment is installed (or the installation conditions are reserved), and before the backfilling of the fat groove, the outer surface of the precast splicing plates is subjected to waterproof treatment, including two processes of applying waterproof coating and laying waterproof coiled material. The specific construction method follows the standard waterproof construction specification. For example, the coating is evenly scraped from bottom to top, the coiled material is fully pasted, and the lap joint meets the requirements. Special attention is paid to the treatment of detailed nodes. This step ensures the waterproof effect of the underground structure after backfilling; Backfilling of the fat groove: After the installation and fixation of the precast splicing plates are completed (and the waterproof treatment is completed), the backfilling operation of the fat groove can be carried out without waiting for the post-cast strip to reach the closed condition, thus accelerating the construction progress and ensuring the safety of the foundation pit.

[0014] Furthermore, after the installation and fixation of the precast splicing plates are completed, the monitoring equipment is installed at the preset structure of the precast splicing plates. For example, a GPS positioning instrument or other types of deformation monitoring sensors (such as the sensor end of a static level, a specific component of an inclinometer, etc.) are placed and fixed in the reserved holes. The selection and quantity of the monitoring points are determined according to the engineering deformation monitoring plan.

[0015] Furthermore, the installed monitoring equipment is established with a data communication connection with the visual monitoring platform, which can be realized by wireless (such as GPRS / 4G / 5G / NB-IoT) or wired means, ensuring that the monitoring data can be transmitted to the specified platform in real time or near real time.

[0016] Furthermore, the visual monitoring platform (preferably a platform integrated with a BIM model) is used to receive, process, store and display the structural deformation data transmitted from the monitoring equipment. The platform can display the position (three-dimensional coordinates) or deformation amount (settlement value, horizontal displacement value) of the monitoring points in real time. By comparing and analyzing the real-time data with the initial data or historical data, the deformation trend of the main structure during the construction process is dynamically monitored. The platform should have an early warning function. When the monitored deformation amount reaches or exceeds the preset alarm threshold, it can automatically send an alarm to notify the relevant management personnel so as to take corresponding measures in time.

[0017] Beneficial effects: Compared with the prior art, the advantages of the present invention are as follows: (1) Improving construction efficiency and shortening the construction period: Using precast splicing plates to replace on-site masonry, the installation speed is fast, the standardization degree is high, significantly reducing the manual workload and time for temporary plugging of the post-cast strip, enabling the fat groove to be backfilled in advance, and possibly shortening the basement and even the overall construction period.

[0018] (2) Enhancing construction safety: The precast concrete plates have high strength and good stability, can reliably bear the lateral pressure of the backfill soil, and avoid the risk of collapse of temporary masonry. At the same time, real-time deformation monitoring and timely early warning greatly enhance the safety during the construction process of the main structure.

[0019] (3) Cost reduction: It reduces the labor and material costs required for temporary masonry, as well as the costs for later demolition.

[0020] (4) Achieving intelligent and visual monitoring: By integrating monitoring devices into precast slabs and combining with visualization platforms such as BIM, it realizes automated, real-time, continuous, and dynamic monitoring of structural deformation. The data is intuitive and accurate, facilitating managers to grasp the structural status.

[0021] (5) Improving monitoring accuracy and early warning timeliness: The monitoring points are directly arranged at the key parts of the structure (fixed through precast slabs), and the data is automatically collected and transmitted, avoiding manual errors and data lags, and improving the monitoring accuracy and early warning timeliness.

[0022] (6) Function integration with multiple benefits: It simultaneously meets the two requirements of temporary closure of post-cast strips and intelligent structural monitoring through an integrated solution, simplifying the construction deployment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a construction method diagram of the precast splicing plate for visual intelligent monitoring of the post-cast strip of the present invention; Figure 2 is a detail drawing of the precast splicing plate; Figure 3 is an elevation view of the precast splicing plate Figure 4 is a plan view of the precast splicing plate; Figure 5 is a lifting hole diagram of the precast splicing plate; Figure 6 is a schematic diagram of the fixation of the precast splicing plate; Figure 7 is an installation flow chart of the precast splicing plate; Figure 8 is a splicing schematic diagram of the precast splicing plate; Figure 9 is a waterproof detail node diagram of the precast splicing plate; Figure 10 is a visual dynamic intelligent monitoring diagram; Figure 11 is a visual intelligent monitoring model diagram.

[0024] In the figures, the reference numerals are: 1, precast assembled plate; 2, exterior wall post-cast strip; 3, tying; 101, steel mesh; 102, exposed steel bars; 103, lifting hole; 4, arc chamfer; 5, waterproof additional layer; DETAILED DESCRIPTION OF THE INVENTION

[0025] The technical solution of the present invention will be described in detail below with reference to the drawings, but the protection scope of the present invention is not limited to the described embodiments.

[0026] Embodiment 1: This embodiment provides a construction method for visual intelligent monitoring of post-cast strip precast splicing plates, which is specifically carried out according to the Figure 1 shown process: Step S1: Intelligent monitoring of the deepening design of precast splicing plates For the on-site structural construction drawings, analyze the post-cast strips on site to determine information such as the width, length, and position of the external wall post-cast strips. According to the size and position of the post-cast strips, deepen the precast splicing plates for the external wall post-cast strips. Determine the width of the precast splicing plates through the width of the external wall post-cast strips. The width of the precast splicing plates = the width of the external wall post-cast strips + 20 cm (10 cm more on one side); determine the number of precast splicing plates through the length of the external wall post-cast strips. The length of each precast splicing plate is between 2 m and 2.5 m to ensure that the post-cast strips of external walls at different heights can be closed; considering the strength of the precast splicing plates, the thickness of the precast splicing plates is 8 - 10 cm; determine the position of the intelligent monitoring settlement observation points through the position of the external wall post-cast strips. Reserve a through-hole 103 with a diameter of 4 cm at the center line of the plate width and 70 cm from the top of the plate as the hoisting and GPS equipment installation hole. Configure a double-layer and double-direction steel bar mesh 102 inside, and embed fixed steel bars 101 with a diameter of Ø6 and a total length of 20 cm near the edges on both sides of the plate, with 15 cm exposed. Design a 5-cm-wide cove joint at the top and bottom of the plate (only the top of the bottom plate has a cove, and only the bottom of the top plate has a cove). According to the structural monitoring plan, determine to use a GPS positioning instrument as the monitoring device, and use the reserved hole as the installation point for the GPS antenna or receiver. The structure of the precast splicing plate after deepening design is as Figures 2 to 5 shown.

[0027] Step S2: Intelligent monitoring of the production of precast splicing plates At the precast site near the site, make templates according to the deepening design drawings, bind the steel bar cages, place the embedded fixed steel bars, pour C30 fine aggregate concrete, and make cove joints. After pouring, cover with a film for curing. When the strength of the precast splicing plates reaches 70%, they can be lifted. When the strength reaches 75%, the precast splicing plates can be transported to the site for stacking and storage, and the stacking layers do not exceed 6 layers.

[0028] Step S3: Intelligent monitoring of the installation of precast plates Start the installation after the strength of the precast splicing plates reaches 100%. Install the precast splicing plates at the external wall post-cast strip 2 to cover the external wall post-cast strip, and connect and fix the fixed steel bars of the precast splicing plates with the reserved steel bars in the external wall post-cast strip by binding 3 or welding, as Figure 6 shown. Before the installation of the precast splicing plates, classify and number the splicing plates, and install them in the order of the numbers. The specific construction process is as Figure 7 shown, including: S301. Cleaning of fertilizer trough base: Before the construction of intelligent monitoring prefabricated panels, clean the fertilizer trough base, clean up the garbage and debris in the fertilizer trough, drain the water from the fertilizer trough base, and ensure that there is no stagnant water or debris in the base. If there is silt or stagnant water, it should be removed and dried. If there is a weak soil layer or holes in some parts, they should be dug out in time.

[0029] S302, External wall base treatment: After the fertilizer trough base is treated, the external wall base is treated. Use a shovel and a broom to treat the basement exterior wall to ensure that the base is solid, flat, burr-free, sand-free, and free of honeycomb holes. Make a 5cm diameter arc chamfer at the inner corner of the base.

[0030] S303, splicing board hoisting: after the base treatment is completed, the splicing board hoisting is carried out. The splicing board hoisting is divided into five steps: splicing board lifting, splicing board transportation, splicing board installation, splicing board fixing, and splicing of splicing boards.

[0031] ① Lifting of spliced ​​panels: After the spliced ​​panels are poured on site, they can be lifted only when they reach 70% of their strength. Considering the number of spliced ​​panels and the construction period requirements, after the spliced ​​panels reach 70% of their strength, they are lifted to the stacking site for storage to facilitate the continued production of spliced ​​panels. The number of stacking layers shall not exceed 6. When lifting the spliced ​​panels, the spliced ​​panels must reach 100% of their strength before lifting. The prefabricated spliced ​​panels are lifted onto the transport vehicle, and the number of stacking layers shall not exceed 6. At the same time, ensure that the prefabricated panels have no cracks, deformations, and other problems before lifting.

[0032] ② Transportation of spliced ​​panels: Prefabricated spliced ​​panels are transported on flatbed trucks to ensure that the prefabricated panels are firmly fixed on the transportation vehicle during transportation.

[0033] ③ Installation of splicing panels: After the prefabricated splicing panels are transported to the installation site, they are hoisted to the installation site and hoisted in sequence according to the number of the prefabricated panels. First, install the bottom plate. The bottom plate should be installed with the splicing surface facing up and the bottom surface facing down. When installing the prefabricated panels, the covering post-casting strip should be installed in the middle, leaving 10CM on each side.

[0034] ④Fixing of splicing plates: The prefabricated splicing plates are fixed by binding or welding the reserved steel bars on the splicing plates and the reserved steel bars in the post-casting zone to ensure that the subsequent installation of the splicing plates can be carried out after the prefabricated splicing plates are fixed.

[0035] ⑤ Splicing of splicing plates: After the installation and fixation of the splicing plate bottom plate is completed, the upper splicing plate is hoisted and installed in sequence according to the number. When the upper plate is connected to the lower plate, the interface is spliced ​​with the eagle mouth according to the design and fixed with the steel bars on the splicing plate, such as Figure 8 shown.

[0036] S304, Construction of waterproof coating: After the splicing board is hoisted, the waterproof coating is constructed. The waterproof coating should be stirred evenly, without solids, without segregation, and the heating temperature should not exceed the specified temperature to avoid scalding. The coating is applied by scraping from bottom to top, with uniform thickness and meeting the design requirements, without bubbles and without the phenomenon of the coating not covering the wall completely.

[0037] S305, Construction of waterproof coiled material: After the construction of the waterproof coating is completed, the construction of the waterproof coiled material is carried out. First, the detailed parts, such as the corners, pipe wells, etc., are processed in detail and the additional layer is constructed, including setting the arc chamfer 4, and then the large-area waterproof coiled material is constructed. The coiled material is constructed by the full-pasting method from bottom to top. The upper coiled material should press the lower coiled material, and the short-side lap joint stagger distance between adjacent two coiled materials in the same layer should not be less than 500 mm. The structure of the waterproof additional layer 5 is as Figure 9 shown.

[0038] After the waterproof construction is completed, the backfilling operation of the fat pocket can be organized. Through the above method, the conflict between the post-cast strip treatment of the basement exterior wall and the early backfilling of the fat pocket of this project is successfully solved. At the same time, the high-precision and automated deformation monitoring during the main structure construction is realized, ensuring the safety and progress of the project.

[0039] Step S4: Creation of intelligent monitoring visualization model and equipment installation Equipment installation: After the waterproof construction is completed (or the installation channel is reserved), according to the needs of deformation monitoring, determine the monitoring points and quantities. Fix the antenna or receiving unit of the GPS positioning instrument in the Ø4 cm holes reserved in the precast slab through brackets and do a good job of protection.

[0040] Model and data connection: Enter the information (ID, initial coordinates) of each GPS device into the corresponding virtual monitoring points in the project BIM model. Configure the data transmission module to ensure that the real-time coordinate data collected by the GPS can be transmitted to the BIM monitoring cloud platform through the 4G network, and calibrate the initial data in the platform, as Figure 10 shown.

[0041] Step S5: Intelligent monitoring of main structure deformation After the system is deployed, the real-time monitoring starts. The BIM platform receives the real-time three-dimensional coordinate data transmitted back by each GPS monitoring point, compares it with the initial coordinates, calculates the settlement amount and horizontal displacement amount of each monitoring point, and dynamically visualizes and displays them in different colors or numerical labels in the BIM model, as Figure 11 shown. The platform sets the warning threshold. When the cumulative settlement amount or the single-day settlement rate of a certain point exceeds the warning threshold, the system automatically sends a warning text message and email to the mobile phone of the project person in charge to prompt attention and take measures.

[0042] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention. For example, the specific dimensions, materials, internal reinforcement, fixing methods of the prefabricated splicing plates, the types of monitoring devices (such as using static level gauges, inclination sensors, etc. to replace or cooperate with GPS), the specific forms of the visualization platform, etc. can all be adjusted according to the actual engineering requirements. As long as it adopts the core concept of the present invention, that is, using prefabricated splicing plates with monitoring device installation structures to cover the post-cast strip and conduct intelligent monitoring, it falls within the protection scope of the present invention. The conventional construction processes and technical details not detailed in this specification can all be implemented with reference to existing mature technologies.

Claims

1. A construction method for visual intelligent monitoring of post-cast strip prefabricated splicing plates, which is applied to the treatment of the external wall post-cast strip of a building structure, and is characterized in that, It includes the following steps: S1: Design precast splicing plates, the size of the precast splicing plates is suitable for covering the post-cast strip of the exterior wall, and includes a preset structure for installing monitoring equipment and a fixing structure for fixing to the building structure; S2: Produce the precast splicing plates according to the design requirements and carry out film curing; S3: Install the precast splicing plates at the post-cast strip of the exterior wall so that they cover the post-cast strip of the exterior wall, and fix the precast splicing plates using the fixing structure; S4: According to the needs of deformation monitoring, determine the monitoring points and quantities, install monitoring equipment at the preset structure of the precast splicing plates, and establish a data connection between the monitoring equipment and the visual monitoring platform; S5: Use the visual monitoring platform to receive and process the structural deformation data collected by the monitoring equipment to achieve the monitoring of the deformation of the building structure.

2. The construction method of the prefabricated spliced panel for the post-cast strip of the exterior wall with visual intelligent monitoring according to claim 1, wherein, The width of the precast splicing plates is designed to be at least 20 cm greater than the width of the post-cast strip of the exterior wall, so as to cover at least 10 cm of the edge of the post-cast strip of the exterior wall on each side during installation.

3. The construction method of the prefabricated spliced plate for the post-cast strip of the exterior wall with visual intelligent monitoring according to claim 1, wherein, The fixing structure of the precast splicing plates includes embedded fixing steel bars, and step S3 includes connecting and fixing the fixing steel bars of the precast splicing plates with the reserved steel bars in the post-cast strip of the exterior wall by binding or welding.

4. The construction method of the prefabricated spliced panel for the post-cast strip of the exterior wall with visual intelligent monitoring according to claim 1, characterized in that, The process of installing the precast splicing plates in step S3 includes: S301: Before installation, clean the fat groove base adjacent to the post-cast strip of the exterior wall and process the exterior wall base where the post-cast strip of the exterior wall is located to ensure that it meets the installation requirements; S302: Classify and number the precast assembled plates, and hoist the precast splicing plates with a strength of 100% from bottom to top in the determined number sequence to the installation position; S303: Place each precast splicing plate in the middle to cover the post-cast strip of the exterior wall, and ensure that it covers at least 10 cm on both sides of the post-cast strip of the exterior wall; S304: Fix each in-place precast splicing plate firmly by binding or welding the preset fixing structure on the precast splicing plate with the reserved steel bars in the post-cast strip of the exterior wall, and install the previous one only after one is fixed; S305: When installing the upper precast splicing plates, use the dove-tail structures preset at the upper and lower edges of the precast splicing plates to dock and splice with the lower fixed precast splicing plates; S306: After all the precast splicing plates are installed, fixed and spliced, apply waterproof coating construction and waterproof coiled material construction to the outer surface of the precast splicing plates in sequence.

5. The construction method of the prefabricated spliced panel for the post-cast strip of the exterior wall with visual intelligent monitoring according to claim 1, wherein, The preset structure of the precast splicing plates is a preset hole, and step S4 includes placing and fixing the monitoring equipment in the hole.

6. The construction method of the prefabricated spliced plate for the post-cast strip of the exterior wall with visual intelligent monitoring according to any one of claims 1 to 5, characterized in that, When multiple precast splicing plates need to be installed to cover the entire length or height of the post-cast strip of the exterior wall, the method further includes: splicing adjacent precast splicing plates through the preset dove-tail structures.

7. The construction method of the precast spliced panel for the exterior wall post-cast strip with visual intelligent monitoring according to claim 1, characterized in that, The monitoring equipment is a GPS positioning instrument, the visual monitoring platform is a building information model platform, and step S5 includes transmitting the position data collected by the GPS positioning instrument to the building information model platform in real time, and performing visual monitoring and early warning analysis of structural settlement and / or horizontal displacement in the building information model platform.

8. The construction method of the precast splicing board for the post-cast strip of the exterior wall with visual intelligent monitoring according to claim 1, characterized in that, The precast splicing plate is cast with C30 concrete and is equipped with internal steel bars to improve strength.

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