A method of non-penetrating electromagnetic welding of roofing tpo waterproofing membranes

Abstract

The application provides a roof TPO waterproof coiled material non-perforated electromagnetic welding nail method, and belongs to the technical field of building construction. The roof TPO waterproof coiled material non-perforated electromagnetic welding nail method is characterized in that the method comprises the following steps: combining size data and design requirements of a roof structure to classify fixed points of a TPO coiled material; cleaning a roof base layer and installing a steel bottom plate on the roof base layer; laying a vapor barrier layer on the surface of the steel bottom plate; laying an insulation layer on the surface of the vapor barrier layer and arranging non-perforated welding gaskets and fixed screws on the insulation layer; laying a TPO coiled material on the surface of the insulation layer; performing electromagnetic welding fixation on the TPO coiled material; and processing detail nodes of the TPO coiled material. The application is beneficial to solving the problem that the adhesive bonding strength of the existing TPO coiled material is insufficient, and the surface of the coiled material is prone to opening, thereby affecting the waterproof effect.

Description

Technical Field

[0001] This invention belongs to the field of building construction technology, and specifically relates to a method for non-perforated electromagnetic welding of TPO waterproof roofing membranes. Background Technology

[0002] TPO waterproof membrane is a new type of waterproof material popular in the United States and Europe, holding an important position in the European and American waterproofing markets. Europeans first used it for roofing in 1991, and it entered the US market in the late 1990s, experiencing rapid growth. By 2008, TPO roofing systems had surpassed EPDM in market share, becoming the number one roofing system in North America. In 2003, some European and American brands entered the Chinese market, and domestic waterproofing material manufacturers also began producing this type of product. Today, it has become a new favorite in the Chinese polymer waterproof membrane market.

[0003] Chinese invention patent (application number: CN202111395819.9) with publication number CN113931389A proposes a construction method for large-area exposed TPO waterproof membrane. The method includes: preparing admixtures with different proportions and conducting pull-out tests on the adhesive strength of the TPO waterproof membrane; determining the control range of the admixture's construction mix ratio; inspecting the concrete surface and arranging the TPO waterproof membrane as a whole, marking lines for on-site construction; conducting collision analysis to adjust local construction; preparing the admixture and wet-laying the TPO waterproof membrane; checking the adhesion strength between the admixture and the TPO waterproof membrane; welding the TPO waterproof membrane; treating local joints of the completed TPO waterproof membrane; and inspecting and accepting the construction site. By using this construction method, the problems of low admixture adhesion strength, high concrete surface flatness requirements, high moisture content, and easy hollowing of the membrane during traditional construction are solved. Furthermore, the pre-arrangement and collision analysis of the construction site improve construction efficiency and enhance the aesthetics of the finished product.

[0004] The above invention uses adhesives to bond and fix TPO waterproof membranes, which can easily lead to insufficient bonding strength and openings on the membrane surface, affecting the waterproofing effect. Summary of the Invention

[0005] In view of this, the present invention proposes a non-perforated electromagnetic welding method for TPO waterproof membrane for roofing, which can solve the problems of insufficient bonding strength and openings on the surface of TPO membrane that affect the waterproofing effect.

[0006] This invention is implemented as follows:

[0007] This invention provides a method for non-perforated electromagnetic welding of TPO waterproof membrane for roofing, comprising the following steps:

[0008] S10: Based on the dimensional data and design requirements of the roof structure, the fixing points of the TPO rolls will be classified.

[0009] S20: Clean the roof base layer and install the steel base plate on the roof base layer;

[0010] S30: A vapor barrier layer is laid on the surface of the steel base plate;

[0011] S40: Lay an insulation layer on the surface of the vapor barrier and lay non-perforated welded gaskets and fixing screws on the insulation layer;

[0012] S50: Lay the TPO roll material on the surface of the insulation layer;

[0013] S60: Electromagnetically weld the TPO roll material to fix it;

[0014] S70: Detailed processing of the TPO roll material.

[0015] The technical effects of the non-perforated electromagnetic welding method for roof TPO waterproof membrane provided by this invention are as follows: This non-perforated electromagnetic welding method for roof TPO waterproof membrane can effectively solve the problem of water leakage caused by inadequate treatment of the weld joint due to perforated welding during roof waterproofing; and it can also solve the problem that the bonding strength of TPO membrane is insufficient when using adhesive in traditional construction methods, and the membrane surface is prone to opening, which affects the waterproofing effect.

[0016] Based on the above technical solution, the method for non-perforated electromagnetic welding nails for roof TPO waterproof membrane of the present invention can be further improved as follows:

[0017] Specifically, S10 includes the following steps:

[0018] Step 1: Based on the dimensions and design requirements of the roof structure, calculate the locations on the roof structure where the wind load value is ≥1, and use this as Data Set 1;

[0019] The second step is to install monitoring sensors at locations on the roof structure where the wind load value is ≥1, and record the data from the monitoring sensors as dataset two.

[0020] The third step is to extract data from dataset one and dataset two to build a neural network model, train the neural network model, and classify the locations on the roof structure with wind load values ​​> 2 as strong fixed points; and the locations on the roof structure with wind load values ​​in the range of 1 to 2 as weak fixed points.

[0021] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by using a neural network model to analyze the locations on the roof structure with wind load values ​​≥1, strong fixing points and weak fixing points are divided. The fixing strength of TPO rolls can be flexibly set according to the stress conditions on the roof structure, which can save construction materials, reduce construction costs, and improve the fixing effect of TPO rolls.

[0022] Furthermore, the specific steps of the third step are as follows:

[0023] (1) Extract data from the dataset 1 and the dataset 2 to build a neural network model, design the network architecture and initialize it, specifically: construct a convolutional neural network, which includes 1 input layer, 3 convolutional layers, 3 ReLU nonlinear activation layers, 3 pooling layers, 1 fully connected layer and 1 output layer;

[0024] (2) The frequency of change of monitoring sensor data corresponding to the location is obtained by training a convolutional neural network. Specifically, it includes two stages: forward propagation network training and backward propagation network training. The forward propagation network training is to extract feature images from the locations of the roof structure with large wind loads and the monitoring sensor data corresponding to each location, and convert the obtained feature images into one-dimensional vectors, input them into a fully connected layer, and obtain the recognition result, i.e., the output vector, by the analyzer. Each value of the output vector represents the frequency of change of monitoring sensor data corresponding to the location of the input data block. The backward propagation network training is to use a stochastic gradient descent optimization algorithm to perform backward network training and update the parameters of the convolutional layer when the output result of the forward propagation network training does not match the expected output.

[0025] (3) The location with a high frequency of change in the monitoring sensor data is designated as the strong fixed point, i.e. the location that requires special reinforcement; the location with a low frequency of change in the monitoring sensor data is designated as the weak fixed point, i.e. the location that requires ordinary reinforcement. The frequency of change in the monitoring sensor data corresponding to the location is determined by the neural network model.

[0026] Furthermore, S40 specifically includes the following steps:

[0027] Step 1: Lay two layers of insulation boards in a staggered pattern on the surface of the vapor barrier to form an insulation layer;

[0028] The second step is to equidistantly place the non-perforated welding gaskets on the surface of the insulation layer, and use the fixing screws to fix the non-perforated welding gaskets, the insulation board and the steel base plate together.

[0029] Third step: At the strong fixing point, evenly add multiple sets of the non-perforated welding gaskets and fix them together using the fixing screws;

[0030] Fourth step: At the weak fixing point, add a set of non-perforated welding gaskets and fix them in place using the fixing screws.

[0031] Specifically, S20 includes the following steps:

[0032] The first step is to remove debris, dust, and water from the roof base layer to make the roof base layer clean;

[0033] In the second step, the steel base plate is laid on the roof base layer with the large crest facing upwards, and fastening screws are installed at the troughs of the steel base plate to fix the steel base plate to the purlin.

[0034] The third step is to lay a 0.8mm thick flat steel plate at the splicing points and gaps between the steel base plates.

[0035] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by laying flat steel plates with a thickness of 0.8mm at the splicing parts and gaps between the steel base plates, the connection between the steel base plates is guaranteed to be smooth and continuous, without sharp protrusions, thus avoiding punctures and cuts to the vapor barrier and TPO rolls.

[0036] Specifically, S30 includes the following steps:

[0037] Step 1: Remove debris and foreign objects from the surface of the steel base plate;

[0038] The second step is to lay a vapor barrier membrane straight on the surface of the steel base plate.

[0039] The third step is to use butyl tape to bond the overlap seams of the vapor barrier membrane and then use a pressure roller to compact it, thus forming the vapor barrier layer.

[0040] Specifically, S50 includes the following steps:

[0041] Step 1: Lay out lines on the surface of the insulation layer;

[0042] The second step is to lay the TPO roll straight on the surface of the insulation layer, with the laying direction perpendicular to the corrugation direction of the steel base plate, based on the aforementioned laying situation.

[0043] The third step is to cut the joint of the TPO roll and overlap the short and long sides of the TPO roll.

[0044] Step 4: Let the laid-out TPO roll stand for 15-30 minutes to release the internal stress of the roll.

[0045] Step 5: Secure the TPO roll material at skylights, expansion joints, and roof pipes using gaskets or strips.

[0046] Specifically, S60 includes the following steps:

[0047] The first step is to adjust the temperature of the hot air welding machine based on the ambient temperature, wind force, and TPO roll temperature at the construction site, and to conduct a trial weld before welding to determine the welding temperature and welding machine operating speed.

[0048] The second step is to move the hot air welding machine along the TPO roll and use a silicone roller to roll and weld the TPO roll.

[0049] The third step is to use a cooler to press the weld pad onto the surface.

[0050] Specifically, S70 includes the following steps:

[0051] Step 1: Inspect all welds using a special probe or flathead screwdriver;

[0052] The second step is to repair the defect using a handheld welding machine.

[0053] The third step is to cut a circular TPO roll with a diameter of ≥15cm at the T-shaped joint formed by the overlap of the three layers of TPO rolls, weld it onto the T-shaped joint, first spot weld it in place, and then weld the surrounding area firmly.

[0054] Step 4: Protect the finished product.

[0055] The construction of the vapor barrier, the insulation layer and the TPO roll is carried out simultaneously. After each construction process is completed, the next process must be carried out in a timely manner.

[0056] Compared with existing technologies, the beneficial effects of the non-perforated electromagnetic welding method for TPO waterproof membranes provided by this invention are as follows: This method utilizes a neural network model to analyze locations on the roof structure with significant wind loads, classifying them into strong and weak fixing points. This allows for flexible adjustment of the TPO membrane's fixing strength based on the stress conditions of the roof structure, saving construction materials and costs while improving the fixing effect of the TPO membrane. It effectively solves the problem of leaks caused by inadequate weld joint treatment during roof waterproofing due to perforated welding. Furthermore, it addresses the issue of insufficient bonding strength of the TPO membrane in traditional adhesive methods, leading to openings on the membrane surface and affecting waterproofing performance. Attached Figure Description

[0057] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0058] Figure 1 This is a flowchart of a non-perforated electromagnetic welding method for TPO waterproof roofing membranes proposed in this invention; Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0060] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0061] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0062] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0063] Furthermore, 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0064] like Figure 1 The diagram shows a flowchart of a non-perforated electromagnetic welding method for TPO waterproof roofing membranes provided by this invention. The invention specifically includes the following steps:

[0065] S10: Based on the dimensional data and design requirements of the roof structure, the fixing points of the TPO rolls will be classified.

[0066] S20: Clean the roof subfloor and install a steel base plate on the roof subfloor;

[0067] S30: A vapor barrier is laid on the surface of the steel base plate;

[0068] S40: Lay an insulation layer on the surface of the vapor barrier and lay non-perforated welded gaskets and fixing screws on the insulation layer;

[0069] S50: TPO rolls are laid on the surface of the insulation layer;

[0070] S60: Electromagnetically weld and fix the TPO roll material;

[0071] S70: Detailed treatment of TPO roll materials.

[0072] It should be noted that TPO membrane, or thermoplastic polyolefin waterproof membrane, is a new type of waterproof membrane made from thermoplastic polyolefin (TPO) synthetic resin, which combines ethylene propylene rubber and polypropylene using advanced polymerization technology, with the addition of antioxidants, anti-aging agents, and softeners. It can be reinforced with polyester fiber mesh as internal reinforcing material to make reinforced waterproof membrane, and belongs to the category of synthetic polymer waterproof membrane products.

[0073] In the above technical solution, S10 specifically includes the following steps:

[0074] Step 1: Based on the dimensions and design requirements of the roof structure, calculate the locations on the roof structure where the wind load value is ≥1, and use this as Data Set 1;

[0075] The second step is to install monitoring sensors at locations on the roof structure where the wind load value is ≥1, and record the data from the monitoring sensors as Data Set Two.

[0076] The third step is to extract data from dataset one and dataset two to build a neural network model, train the neural network model, and classify the locations on the roof structure with wind load values ​​> 2 as strong fixed points; and the locations on the roof structure with wind load values ​​in the range of 1 to 2 as weak fixed points.

[0077] It should be noted that the dimensional data includes the span and width of the roof structure, and the length and width of the TPO roll material; the data from the monitoring sensors includes the magnitude and direction of the wind pressure at each monitoring location.

[0078] Wind load, also known as wind dynamic pressure, is the pressure exerted by airflow on an engineering structure. Wind load is related to factors such as basic wind pressure, topography, ground roughness, height above ground, and building shape. The formula for calculating wind load is: ,

[0079] In the formula, Standard value of wind load (kN / m) 2 ); Let z be the wind vibration coefficient at height z; This is the wind load shape coefficient; This is the wind pressure height variation coefficient; Basic wind pressure (kN / m) 2 ).

[0080] Furthermore, in the above technical solution, the specific steps of the third step are as follows:

[0081] (1) Extract data from dataset 1 and dataset 2 to build a neural network model, design the network architecture and initialize it, specifically: construct a convolutional neural network, which includes 1 input layer, 3 convolutional layers, 3 ReLU nonlinear activation layers, 3 pooling layers, 1 fully connected layer and 1 output layer;

[0082] (2) The frequency of change of monitoring sensor data corresponding to the location is obtained by training a convolutional neural network. Specifically, it includes two stages: forward propagation network training and backward propagation network training. Forward propagation network training is to extract feature images from the locations with large wind loads on the roof structure and the monitoring sensor data corresponding to each location, and convert the obtained feature images into one-dimensional vectors, input them into a fully connected layer, and obtain the recognition result by the analyzer, i.e., the output vector. Each value of the output vector represents the frequency of change of monitoring sensor data corresponding to the location of the input data block. Backward propagation network training is to use the stochastic gradient descent optimization algorithm to perform backward network training when the output result of forward propagation network training does not match the expected output, and update the parameters of the convolutional layer.

[0083] (3) Positions with high frequency of changes in monitoring sensor data are designated as strong fixed points, i.e., positions that require special reinforcement and fixation; positions with low frequency of changes in monitoring sensor data are designated as weak fixed points, i.e., positions that require ordinary reinforcement and fixation. The frequency of changes in monitoring sensor data corresponding to a position is determined by a neural network model.

[0084] The input layer consists of data from dataset one and dataset two.

[0085] The output layer consists of a single node, which comprises the frequency of change in monitoring sensor data corresponding to the sensor deployment location.

[0086] The convolutional layers consist of three layers with 4, 8, and 16 kernels respectively, each with a size of 3×3. To ensure that feature extraction exhibits a non-linear relationship, each convolutional layer is followed by an activation function, specifically the ReLU activation function, whose expression is as follows: ;

[0087] Pooling layer: Select max pooling, size 2×2, step size 1;

[0088] The fully connected layer takes the features extracted during training through the convolutional and pooling layers, writes them as a one-dimensional vector, and fully connects them with the four nodes of the output layer to achieve the purpose of classification.

[0089] The forward propagation network is trained by extracting feature images from the locations of large wind loads on the roof structure and the corresponding monitoring sensor data. The obtained feature images are then converted into one-dimensional vectors and input into a fully connected layer. The analyzer then produces the recognition result, i.e., the output vector. Each value of the output vector represents the frequency of change of the monitoring sensor data corresponding to the location of the input data block.

[0090] When the output of the current forward propagation network training does not match the expected output, a stochastic gradient descent optimization algorithm is used to train the network in reverse to update the parameters of the convolutional layers. The mean squared error loss function is used to calculate the error between the actual and expected outputs of the convolutional neural network. ;

[0091] in, and Let c be the output and expected output of the convolutional neural network, respectively, and c be the output category. Since there are two expected outputs, c = 2.

[0092] A model for selecting strong and weak fixed points of the roof structure is formed through training with forward and backward propagation networks.

[0093] In the above technical solution, S20 specifically includes the following steps:

[0094] The first step is to remove debris, dust, and water from the roof base layer to make the roof base layer clean;

[0095] In the second step, lay the steel base plate with the large crest facing upwards on the roof base layer, and install fastening screws at the troughs of the steel base plate to fix the steel base plate to the purlins.

[0096] The third step is to lay flat steel plates with a thickness of 0.8mm at the splicing points and gaps between the steel base plates.

[0097] It should be noted that the steel base plate is made of profiled steel sheet with a wavy cross-section, having crests and troughs; in this invention, the fastening screws at the troughs of the steel base plate are arranged along the purlin direction with a spacing of 200mm; the overlap length of the steel base plate is ≥80mm.

[0098] In the above technical solution, S30 specifically includes the following steps:

[0099] Step 1: Remove debris and foreign objects from the surface of the steel base plate;

[0100] The second step is to lay a vapor barrier membrane in a straight line on the surface of the steel base plate;

[0101] The third step is to use butyl tape to bond the overlap seams of the vapor barrier membrane and then use a pressure roller to compact it to form a vapor barrier layer.

[0102] It should be noted that the vapor barrier in this invention includes a self-adhesive SBS aluminum foil modified bitumen vapor barrier with a thickness of 0.6 mm and a composite polypropylene film with a thickness of 0.3 mm; a suitable vapor barrier is selected based on different locations on the roof; the overlap width of adjacent vapor barrier films is not less than 100 mm;

[0103] The vapor barrier membrane is turned up and laid tightly on the columns and walls, extending at least 150mm above the insulation layer. It is sealed with butyl tape to ensure that indoor air is isolated and to prevent indoor moisture from entering the insulation layer.

[0104] Furthermore, in the above technical solution, S40 specifically includes the following steps:

[0105] Step 1: Lay two layers of insulation boards in a staggered pattern on the surface of the vapor barrier to form an insulation layer;

[0106] The second step is to install non-perforated welding gaskets at equal intervals on the surface of the insulation layer, and then use fixing screws to fix the non-perforated welding gaskets, insulation board and steel base plate together.

[0107] The third step is to evenly add multiple sets of non-perforated welding gaskets at the strong fixing points and fix them with fixing screws.

[0108] Step 4: At the weak fixing point, add a set of non-perforated welding gaskets and fix the connection with fixing screws.

[0109] It should be noted that rock wool boards are used for insulation; the two layers of insulation boards are installed continuously with staggered joints, and are neatly cut, with tight and flat overlaps to avoid forming through seams that would affect the insulation effect; TPO rolls are installed simultaneously with the insulation boards to prevent them from getting wet; when using fixing screws to anchor the insulation boards, the fixing screws are perpendicular to the profiled steel sheet, and the tightness is appropriate to avoid over-tightening or under-tightening affecting the roof system's wind uplift resistance; when fixing a relatively soft insulation layer, it should be tightened until slight compression deformation is visible around the sleeve to prevent the sleeve from causing cracks on the surface of the insulation board; when setting fixing screws, the fixing screws should extend 20-25mm through the steel base plate.

[0110] Specifically, in the above technical solution, S50 includes the following steps:

[0111] Step 1: Lay out the lines on the surface of the insulation layer;

[0112] The second step is to lay the TPO rolls straight on the surface of the insulation layer, with the laying direction perpendicular to the corrugation direction of the steel base plate, based on the layout conditions.

[0113] The third step is to cut the joints of the TPO roll and overlap the short and long sides of the TPO roll.

[0114] Step 4: Let the laid-out TPO roll stand for 15-30 minutes to release the internal stress of the roll.

[0115] Step 5: Secure the TPO roll material at skylights, expansion joints, and pipes exiting the roof using gaskets or strips.

[0116] It should be noted that the long side overlap width of the TPO roll is 120mm, and the short side is staggered with an overlap width of 80mm. The short side overlap seams are staggered by no less than 300mm. The distance between the non-perforated welding gasket and the fixing screw and the edge of the TPO roll is 30mm.

[0117] When arranging TPO rolls, avoid cross joints. For T-shaped joints formed by overlapping three layers of TPO rolls, cut 15cm in the area and use a trimming knife to cut the front end of the weld into a bevel to eliminate the different heights caused by the overlap of the rolls and achieve the effect of cleaning the boundary of the joint line.

[0118] Specifically, in the above technical solution, S60 includes the following steps:

[0119] The first step is to adjust the temperature of the hot air welding machine based on the ambient temperature, wind force, and TPO roll temperature at the construction site, and to conduct a trial weld before welding to determine the welding temperature and the operating speed of the welding machine.

[0120] The second step is to move the hot air welding machine along the TPO roll and use silicone rollers to roll and weld the TPO roll.

[0121] The third step is to use a cooler to press onto the welding pad.

[0122] It should be noted that the welding principle of the hot air welding machine is to use electromagnetic induction to generate heat, heat the non-perforated welding pad, melt the coating on the non-perforated welding pad, and bond it to the base layer of the TPO roll.

[0123] If TPO rolls are contaminated or exposed to the external environment for 7 days or more, they must be cleaned before welding. Specifically, wipe away dust and other debris with a damp cloth, then clean the welding area with water. If heavily contaminated, use a neutral detergent to clean, then wipe dry with a clean cloth, or use a special roll cleaning agent for thorough cleaning. Wipe dry with a white cloth and wait for the roll cleaning agent to completely evaporate before welding. The welding speed should be about 20% slower than the normal welding speed.

[0124] When the roof slope is small, use an automatic hot air welding machine or a crawler welding machine to weld TPO rolls; when the roof slope is large and it is inconvenient to use an automatic welding machine, use a crawler welding machine or a handheld hot air welding machine to weld TPO rolls.

[0125] When using an automatic welding machine, position the machine before the seam, ensuring your fingers guide the machine in the same direction as the seam's movement. When lifting the overlapping roll, insert the air nozzle of the automatic hot air welding machine into the overlap area. During seam operation, ensure the small guide wheel at the front of the machine is aligned with the edge of the upper roll. Move the machine along the seam to prevent burning the roll. At all seam intersections, use a silicone roller to roll the seam to ensure the continuity of the hot air weld. Surface irregularities caused by multiple layers of TPO roll thickness may result in false welds. When using 1.5mm thick TPO roll, the surface overlap of the unreinforced flashing must be above all "T" joint overlaps. After completing the seam welding, immediately remove the nozzle of the automatic hot air welding machine from the seam to avoid burning the roll. Ensure the welded area is wrinkle-free; any wrinkles in the overlap area must be cut off. When welding in areas where the automatic hot air welding machine has stopped or restarted, a handheld welding machine must be used. The width of the hot air welding is at least 25mm.

[0126] Specifically, in the above technical solution, S70 includes the following steps:

[0127] Step 1: Inspect all welds using a special probe or flathead screwdriver;

[0128] The second step is to repair the defect using a handheld welding machine.

[0129] The third step is to cut a circular piece of TPO roll with a diameter of ≥15cm and weld it to the T-joint. First, spot weld it in place, and then weld the surrounding area firmly.

[0130] Step 4: Protect the finished product.

[0131] It should be noted that the distance between the working surfaces of the vapor barrier, insulation layer and TPO roll should not be too large, and the construction of the insulation board should not precede the construction of the roll by too much. When installing the fixing screws, the steel base plate should be clearly visible to ensure that the fixing screws can be easily tightened at the crest of the steel base plate. Before construction, drainage measures should be taken to ensure that rainwater can be drained away in time to avoid rainwater soaking the installed insulation layer.

[0132] In the above technical solution, the construction of the vapor barrier, the insulation layer and the TPO membrane are carried out simultaneously. After each construction process is completed, the next process must be carried out in a timely manner.

[0133] It should be noted that during the construction of each workday, avoid completing the insulation layer first and then installing the TPO roll material, to avoid not having enough time to cover the insulation layer when it rains; at the end of each workday, the completed roof should be sealed to prevent rainwater and moisture from entering the insulation layer.

[0134] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for non-perforated electromagnetic welding of TPO waterproof roofing membranes, characterized in that, Includes the following steps: S10: Based on the dimensional data and design requirements of the roof structure, the fixing points of the TPO rolls will be classified. S20: Clean the roof substrate and install a steel base plate on the roof substrate; S30: A vapor barrier layer is laid on the surface of the steel base plate; S40: Lay an insulation layer on the surface of the vapor barrier and lay non-perforated welded gaskets and fixing screws on the insulation layer; S50: Lay the TPO roll material on the surface of the insulation layer; S60: Electromagnetically weld the TPO roll material to fix it; S70: Detailed processing of the TPO roll material; S10 specifically includes the following steps: Step 1: Based on the dimensions and design requirements of the roof structure, calculate the locations on the roof structure where the wind load value is ≥1, and use this as Data Set 1; The second step is to install monitoring sensors at locations on the roof structure where the wind load value is ≥1, and record the data from the monitoring sensors as dataset two. The third step is to extract data from dataset one and dataset two to build a neural network model, train the neural network model, and classify the locations on the roof structure with wind load values ​​> 2 as strong fixed points; and classify the locations on the roof structure with wind load values ​​in the range of 1 to 2 as weak fixed points. S40 specifically includes the following steps: Step 1: Lay two layers of insulation boards in a staggered pattern on the surface of the vapor barrier to form an insulation layer; The second step is to equidistantly place the non-perforated welding gaskets on the surface of the insulation layer, and use the fixing screws to fix the non-perforated welding gaskets, the insulation board and the steel base plate together. Third step: At the strong fixing point, evenly add multiple sets of the non-perforated welding gaskets and fix them together using the fixing screws; Fourth step: At the weak fixing point, add a set of non-perforated welding gaskets and fix them in place using the fixing screws.

2. The method for non-perforated electromagnetic welding nails for TPO waterproof roofing membrane according to claim 1, characterized in that, The specific steps of the third step are as follows: (1) Extract data from the dataset 1 and the dataset 2 to build a neural network model, design the network architecture and initialize it, specifically: construct a convolutional neural network, which includes 1 input layer, 3 convolutional layers, 3 ReLU nonlinear activation layers, 3 pooling layers, 1 fully connected layer and 1 output layer; (2) The frequency of change of monitoring sensor data corresponding to the location is obtained by training a convolutional neural network. Specifically, it includes two stages: forward propagation network training and backward propagation network training. The forward propagation network training is to extract feature images from the locations of the roof structure with large wind loads and the monitoring sensor data corresponding to each location, and convert the obtained feature images into one-dimensional vectors, input them into a fully connected layer, and obtain the recognition result, i.e., the output vector, by the analyzer. Each value of the output vector represents the frequency of change of monitoring sensor data corresponding to the location of the input data block. The backward propagation network training is to use a stochastic gradient descent optimization algorithm to perform backward network training and update the parameters of the convolutional layer when the output result of the forward propagation network training does not match the expected output. (3) The location with a high frequency of change in the monitoring sensor data is designated as the strong fixed point, i.e. the location that requires special reinforcement; the location with a low frequency of change in the monitoring sensor data is designated as the weak fixed point, i.e. the location that requires ordinary reinforcement. The frequency of change in the monitoring sensor data corresponding to the location is determined by the neural network model.

3. The method for non-perforated electromagnetic welding nails for TPO waterproof roofing membrane according to claim 1, characterized in that, S20 specifically includes the following steps: The first step is to remove debris, dust, and water from the roof base layer to make the roof base layer clean; In the second step, the steel base plate is laid on the roof base layer with the large crest facing upwards, and fastening screws are installed at the troughs of the steel base plate to fix the steel base plate to the purlin. The third step is to lay a 0.8mm thick flat steel plate at the splicing points and gaps between the steel base plates.

4. The method for non-perforated electromagnetic welding nails for TPO waterproof roofing membrane according to claim 1, characterized in that, S30 specifically includes the following steps: Step 1: Remove debris and foreign objects from the surface of the steel base plate; The second step is to lay a vapor barrier membrane straight on the surface of the steel base plate. The third step is to use butyl tape to bond the overlap seams of the vapor barrier membrane and then use a pressure roller to compact it, thus forming the vapor barrier layer.

5. The method for non-perforated electromagnetic welding nails for TPO waterproof roofing membrane according to claim 1, characterized in that, S50 specifically includes the following steps: Step 1: Lay out lines on the surface of the insulation layer; The second step is to lay the TPO roll straight on the surface of the insulation layer, with the laying direction perpendicular to the corrugation direction of the steel base plate, based on the aforementioned laying situation. The third step is to cut the joint of the TPO roll and overlap the short and long sides of the TPO roll. Step 4: Let the laid-out TPO roll stand for 15-30 minutes to release the internal stress of the roll. Step 5: Secure the TPO roll material at skylights, expansion joints, and roof pipes using gaskets or strips.

6. The method for non-perforated electromagnetic welding nails for TPO waterproof roofing membrane according to claim 1, characterized in that, S60 specifically includes the following steps: The first step is to adjust the temperature of the hot air welding machine based on the ambient temperature, wind force, and TPO roll temperature at the construction site, and to conduct a trial weld before welding to determine the welding temperature and welding machine operating speed. The second step is to move the hot air welding machine along the TPO roll and use a silicone roller to roll and weld the TPO roll. The third step is to use a cooler to press the weld pad onto the surface.

7. The method for non-perforated electromagnetic welding nails for TPO waterproof roofing membrane according to claim 1, characterized in that, S70 specifically includes the following steps: Step 1: Inspect all welds using a special probe or flathead screwdriver; The second step is to repair the defect using a handheld welding machine. The third step is to cut a circular TPO roll with a diameter of ≥15cm at the T-shaped joint formed by the overlap of the three layers of TPO rolls, weld it onto the T-shaped joint, first spot weld it in place, and then weld the surrounding area firmly. Step 4: Protect the finished product.

8. The method for non-perforated electromagnetic welding nails for TPO waterproof roofing membrane according to claim 1, characterized in that, The construction of the vapor barrier, the insulation layer and the TPO membrane is carried out simultaneously. After each construction process is completed, the next process must be carried out in a timely manner.

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