Flood lighting construction method for Tpo waterproof curved steel structure roof

Abstract

The invention provides a Tpo waterproof curved surface steel structure roof floodlighting construction method, which belongs to the technical field of building construction, and comprises the following steps: collecting related parameters, determining pipeline arrangement by using an optimization model, and generating a BIM drawing; measuring and positioning on site; rubber cushion blocks are manufactured and installed; mounting a bridge frame; a pipeline is installed on the rubber cushion block; laying a cable and performing waterproof treatment; lamp mounting nodes are deepened; determining lamp bracket parameters by using the parameter equation set; and a lamp support is manufactured and installed. According to the method, parameter optimization, the BIM technology, accurate measurement and customized design are combined, efficient and accurate installation of the roof floodlight illumination pipeline is achieved, meanwhile, multiple factors such as waterproofness, bearing capacity and attractiveness are considered, the factors of pipeline layout and waterproofness are fully considered while the illumination requirement is met, and the installation efficiency of the roof floodlight illumination pipeline is improved. The technical problems that floodlighting is difficult to achieve on the curved steel structure roof, and meanwhile the requirements for pipeline layout reasonability and waterproof performance are met are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and in particular relates to a Tpo waterproof curved steel structure roof floodlighting construction method. Background Art

[0002] In recent years, people have higher and higher requirements for the functionality, aesthetics and environmental protection of buildings. As a new type of roof construction technology, curved steel structure has gradually been widely used in the construction field due to its strong bearing capacity, beautiful shape and fast construction. At the same time, with the popularization of the concept of energy conservation and emission reduction, it has become an inevitable trend to lay out floodlighting systems on curved steel structure roofs.

[0003] At present, there are two main floodlighting methods commonly used on curved steel structure roofs: one is to hang the lighting fixtures directly above the roof, and the other is to install the lighting fixtures at the eaves of the roof edge. Both methods have certain defects: directly hanging lighting fixtures will block the view of the roof, affecting the overall beauty of the building; and although the lighting fixtures installed on the eaves will not block the view, they are far away from the radiation surface, the lighting effect is poor, and cannot meet the requirements of uniform floodlighting.

[0004] In addition, when laying out the floodlighting system on the curved steel structure roof, many factors such as pipelines and waterproofing need to be considered. Conventional pipeline laying methods often use simple parallel or radial laying, which cannot make full use of the limited roof space, resulting in dense and crowded pipelines and easily damaging the original waterproof layer. This not only affects the safety and reliability of the floodlighting system, but also increases the difficulty of subsequent maintenance.

[0005] Therefore, how to achieve floodlighting on the curved steel structure roof while meeting the requirements of pipeline layout rationality and waterproof performance is a technical problem that needs to be solved urgently. Summary of the invention

[0006] In view of this, the present invention provides a Tpo waterproof curved steel structure roof floodlighting construction method, which can solve the technical problem that the prior art is difficult to achieve floodlighting on the curved steel structure roof, while meeting the requirements of pipeline layout rationality and waterproof performance.

[0007] The present invention is achieved in that:

[0008] The present invention provides a TPO waterproof curved steel structure roof floodlighting construction method, comprising the following steps:

[0009] S10. Collect parameters related to pipeline layout, including roof curvature, number of pipelines, pipeline specifications, load requirements and waterproof layer thickness, use pipeline layout optimization model to determine pipeline fixed spacing and fixture positions, and use BIM software to comprehensively arrange roof floodlighting pipelines to obtain BIM drawings;

[0010] S20. According to the BIM drawings, conduct on-site measurement and positioning of pipeline installation positions and fixtures; specifically, lay out an equally spaced grid coordinate system on the roof; use a total station or laser rangefinder to measure the specific positions of the starting and ending points of each pipeline in the grid coordinate system; calculate the optimal fixture position based on the pipeline layout optimization model. Mark the corresponding grid position; record the measured pipeline starting and ending point coordinates and fixture position coordinates in the ledger;

[0011] S30, making a rubber pad, wherein the cross section of the rubber pad is a trapezoid; and pasting the rubber pad on the top of the TPO waterproofing membrane with a special glue; specifically comprising: cutting the rubber material into a pad with a trapezoidal cross section, with a short side length of 100 mm, a long side length of 150 mm, and a height of 100 mm; applying a special epoxy resin glue on the installation position above the roof TPO waterproofing membrane; pasting the prepared rubber pads one by one on the position coated with glue, with a spacing of 1500 mm; after the glue is completely cured, checking the pasted rubber pads to ensure that they are firmly pasted on the roof waterproofing layer;

[0012] S40, installing the bridge, fixing the bridge to the steel structure roof pillar, and reserving a 20 mm rubber block installation distance for the TPO waterproof layer on the flat steel on both sides; specifically including: selecting a galvanized steel bridge of appropriate specifications with good corrosion resistance according to factors such as the number of pipelines, load requirements and structural strength; determining the installation position of the bridge with reference to the starting and ending coordinates of the pipeline measured in step S20, and reserving a 20 mm installation distance on the roof steel structure column; using special bolt fixings to firmly install the bridge on the roof steel structure column to ensure its stability and reliability; reserving 20 mm of space on the flat steel on both sides of the bridge for subsequent waterproofing on the rubber pad;

[0013] S50, installing pipelines, installing the bridge and the threading tube on the rubber pad, and fixing them on the pad; specifically including: placing each pipeline on the corresponding rubber pad in sequence according to the starting and ending coordinates of the pipeline recorded in step S20; using special metal fasteners or plastic straps to firmly fix the pipeline on the rubber pad to ensure the stability of the pipeline position; checking one by one whether the direction of the installed pipelines is consistent with the design by comparing with the BIM drawings, and adjusting the pipelines that deviate from the design; using anti-corrosion and waterproof materials to wrap the contact parts between the pipeline and the bridge to prevent the pipeline from being damaged;

[0014] S60. Lay cables, thread them in pipes and perform necessary waterproofing. Specifically, use professional lead-in equipment to thread cables into installed pipes in sequence; use special cable fixing clips to firmly fix cables on the surface of pipes to prevent them from falling off; use sealant or waterproof sleeves to strengthen the pipe interfaces after threading cables to ensure waterproof performance; use insulating sheaths or waterproof wrapping materials to protect the exposed parts of cables to avoid being affected by the external environment;

[0015] S70. According to the roof shape and the surface honeycomb aluminum plate method, deepen the lamp installation nodes and reserve the lamp installation position; specifically include: according to the use function and lighting standards of the building, determine the average illumination I0 that the roof needs to achieve; refer to the BIM drawings, combine the roof shape and paving method, and reasonably plan the installation position of the lamp to meet the overall lighting requirements; on the honeycomb aluminum plate surface layer of the roof, according to the size of the lamp, reserve the installation holes of appropriate size; record the plane coordinates (x, y) of each lamp installation position in the ledger to provide a basis for the subsequent lamp bracket design;

[0016] S80, according to the height of the installation location, roof curvature, lighting requirements, lamp specifications, and structural bearing capacity, the parameters of the lamp bracket are determined using the lamp bracket parameter equation group; specifically, the bracket height H is determined using the following optimization equation according to the required illumination I0, the lighting area A, and the lamp inclination angle θ: According to the bracket height H, lamp weight W l And the thickness of the waterproof layer T, the following optimization equation is used to determine the bracket length L: L = L0 + α1·H + α2· According to the ideal illumination I0 and the actual illumination I r And the coordinates of the lamp installation position (x, y), the following optimization equation is used to determine the bracket tilt angle θ:

[0017] S90, making a lamp bracket, and installing the lamp bracket simultaneously during the installation of the roof steel structure; specifically comprising: making two arc-shaped brackets using arc-shaped steel plates according to the bracket height H, length L and tilt angle θ calculated in step S80; installing the two manufactured arc-shaped brackets on the roof steel structure reserved in step S40 by means of bolts or the like, ensuring that the bracket positions are accurate; after the bracket is installed, adjusting the tilt angle of the bracket by means of adjusting bolts or the like according to the optimal tilt angle θ calculated in step S80; inspecting the installed lamp bracket to ensure that it is firmly installed and the angle adjustment is accurate to meet the requirements of subsequent lamp installation.

[0018] On the basis of the above technical solution, a Tpo waterproof curved steel structure roof floodlighting construction method of the present invention can also be improved as follows:

[0019] The pipeline layout optimization model includes a load distribution equation, a spacing optimization equation, a fixture position equation, a waterproof layer thickness equation, and a construction process constraint equation.

[0020] Furthermore, the load distribution equation is used to calculate the load distribution of each pipeline;

[0021] The spacing optimization equation is used to optimize the minimum spacing between pipelines;

[0022] The fixture position equation is used to determine the optimal position of the fixture;

[0023] The waterproof layer thickness equation takes into account the effect of the waterproof layer on fixtures and pipelines;

[0024] The construction process constraint equation ensures the feasibility of each process during the construction process.

[0025] Furthermore, the lamp stand parameters include stand height, stand length, and stand inclination angle.

[0026] Furthermore, the lamp stand parameter equation group includes a bracket height optimization equation, a bracket length optimization equation, and a bracket tilt angle optimization equation.

[0027] Furthermore, the bracket height optimization equation is used to calculate the bracket height to meet the lighting requirements, the input is the installation position height, the required illumination, the lighting area, the lamp inclination angle, and the output is the optimized bracket height;

[0028] The bracket length optimization equation is used to calculate the length of the bracket to ensure that the lamp is safely installed without affecting the waterproof layer. The input is the bracket height, the lamp weight, and the waterproof layer thickness. The output is the optimized bracket length.

[0029] The bracket tilt angle optimization equation is used to determine the optimal tilt angle of the bracket to achieve the best lighting effect. The input is the ideal illuminance, actual illuminance, lamp installation position coordinates, and roof size. The output is the optimized bracket tilt angle.

[0030] Furthermore, the cross-section of the rubber pad is a trapezoid, with a short side of 100 mm, a long side of 150 mm, and a height of 100 mm.

[0031] Furthermore, the distance between the rubber pad and the top of the Tpo waterproof membrane is 1500 mm.

[0032] Furthermore, the bridge frame is specifically made of galvanized steel bridge frame, which has anti-corrosion properties and effectively supports and protects pipelines.

[0033] Furthermore, the lamp bracket includes two arc plates for adjusting the installation angle of the lamp.

[0034] The following is a detailed description of each equation in the pipeline layout optimization model:

[0035] 1. Load sharing equation:

[0036]

[0037] Where, L i is the load of the i-th pipeline; Pi is the power of the i-th pipeline; n is the total number of pipelines; L t is the total load; ε1 is the error term.

[0038] Parameter acquisition method: P i Obtained by consulting the pipeline specification manual; L t Calculated from the design load of the roof structure.

[0039] 2. Spacing optimization equation:

[0040]

[0041] Where D min is the minimum spacing between pipelines; D r The minimum spacing required by pipeline specifications; D h is the minimum spacing required for thermal expansion; K is the correction coefficient; R is the roof curvature; ε2 is the error term.

[0042] Parameter acquisition method: D r Obtained by consulting the pipeline installation specifications; D h It is obtained through thermal calculation; R is obtained by measuring the actual curvature of the roof; K is set by experience, and the default value is 0.05.

[0043] 3. Fixture position equation:

[0044]

[0045] Where P f is the location of the fixture; L is the total length of the pipeline; A and B are adjustment coefficients; x and y are roof coordinates; ε3 is the error term.

[0046] Parameter acquisition method: L is obtained by measuring the actual length of the pipeline; A and B are obtained through numerical simulation optimization, and the value range is [-0.1, 0.1]; x and y are obtained by measuring the roof coordinates.

[0047] 4. Waterproof layer thickness equation:

[0048]

[0049] Where T is the thickness of the waterproof layer; T0 is the foundation thickness; α, β, γ are coefficients; N is the number of fixtures; W is the roof load-bearing; ε4 is the error term.

[0050] Parameter acquisition method: T0 is determined by waterproof design specifications; α, β, and γ are obtained through regression analysis of experimental data; N is calculated through the fixture position equation; and W is obtained through structural load calculation.

[0051] 5. Construction process constraint equation:

[0052]

[0053] Where C is the construction process feasibility index; w i is the weight coefficient; f i (x) is the process constraint function; m is the number of constraints; ε5 is the error term.

[0054] Parameter acquisition method: w i Determined by expert scoring method; i (x) Establish mathematical models based on specific process requirements, such as material strength, construction difficulty, etc.

[0055] The following is a detailed description of each equation in the lamp stand parameter equation group:

[0056] 1. Bracket height optimization equation:

[0057]

[0058] Where H is the bracket height; H0 is the foundation height; k1, k2, k3 are coefficients; I is the required illumination; A is the lighting area; θ is the inclination angle of the lamp; ε6 is the error term.

[0059] Parameter acquisition method: H0 is determined through initial design; k1, k2, and k3 are obtained through regression analysis of lighting experimental data; I is determined according to lighting requirements; A is obtained through measurement; θ is calculated through the bracket tilt angle optimization equation.

[0060] 2. Stent length optimization equation:

[0061]

[0062] Where, L is the length of the bracket; L0 is the basic length; α1, α2, α3 are coefficients; H is the height of the bracket; W l is the weight of the lamp; T is the thickness of the waterproof layer; T0 is the reference thickness; ε7 is the error term.

[0063] Parameter acquisition method: L0 is determined by initial design; α1, α2, and α3 are obtained by structural mechanics analysis and experimental data regression; H is calculated by the bracket height optimization equation; W l Obtained by referring to the lamp specification manual; T and T0 are determined by the waterproof layer design.

[0064] 3. Bracket tilt angle optimization equation:

[0065]

[0066] Where θ is the bracket tilt angle; k a is the adjustment coefficient; I0 ​​is the ideal illumination; I r is the actual illumination; β1 and β2 are correction coefficients; x and y are the coordinates of the lamp installation position; L r and Wr 分 are the length and width of the roof respectively; ε8 is the error term.

[0067] Parameter acquisition method: k a Determined through lighting experiments, the value range is [0.8, 1.2]; I0 is determined according to lighting requirements; I r It is measured by an illuminance meter; β1 and β2 are obtained by numerical simulation optimization, and the value range is [-0.1, 0.1]; x, y, L r , W r Obtained by measuring the roof dimensions.

[0068] Compared with the prior art, the beneficial effect of the Tpo waterproof curved steel structure roof floodlighting construction method provided by the present invention is: through systematic pipeline layout and lamp installation design, uniform floodlighting of the curved steel structure roof is achieved, while also ensuring the rationality of the pipeline layout and the reliability of the waterproof performance.

[0069] First, the present invention adopts a pipeline layout optimization model, comprehensively considering factors such as roof curvature, pipeline load, waterproof layer thickness, etc., to optimize and determine the optimal fixed spacing and fixture position of the pipeline. This not only improves the utilization rate of limited roof space, reduces the density of pipelines, but also creates favorable conditions for subsequent waterproofing treatment.

[0070] Secondly, the present invention pre-installs rubber pads on the roof and adopts a special galvanized steel bridge frame to provide a reliable support foundation for the installation and protection of pipelines. This can not only effectively prevent the pipelines from being damaged by external forces, but also has good compatibility with the original waterproof layer, avoiding the reduction of waterproof performance.

[0071] Finally, the present invention adopts a lamp stand parameter optimization equation group based on the characteristics of lamp installation, and calculates the lamp stand height, length and tilt angle that meet the ideal lighting effect according to the roof conditions and lighting requirements. This ensures that the installation position and tilt angle of each lamp can reach the optimal state, thereby achieving uniform floodlighting of the entire roof.

[0072] To sum up, the Tpo waterproof curved steel structure roof floodlighting construction method proposed in the present invention not only meets the lighting requirements, but also fully considers the factors of pipeline layout and waterproof performance, embodies systematicness and pertinence, and solves the technical problem that the existing technology is difficult to achieve floodlighting on the curved steel structure roof while meeting the requirements of pipeline layout rationality and waterproof performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0073] Figure 1 A flow chart of the method provided by the present invention;

[0074] Figure 2 Schematic diagram of the pad;

[0075] Figure 3 is a schematic diagram of a bracket in an embodiment;

[0076] Figure 4 It is a schematic diagram of pipeline installation in the embodiment;

[0077] Figure 5 Schematic diagram of a lamp bracket in the embodiment. DETAILED DESCRIPTION

[0078] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0079] like Figure 1 As shown, it is a flow chart of a Tpo waterproof curved steel structure roof floodlighting construction method provided by the present invention, and the method comprises the following steps:

[0080] S10. Collect parameters related to pipeline layout, including roof curvature, number of pipelines, pipeline specifications, load requirements and waterproof layer thickness, use pipeline layout optimization model to determine pipeline fixed spacing and fixture positions, and use BIM software to comprehensively arrange roof floodlighting pipelines to obtain BIM drawings;

[0081] S20. Conduct on-site measurement and positioning of pipeline installation locations and fixtures according to BIM drawings;

[0082] S30, making a rubber pad, the cross section of which is a trapezoid; and pasting the rubber pad on the top of the Tpo waterproof membrane with a special glue;

[0083] S40, install the bridge frame, fix the bridge frame to the steel structure roof support, and reserve a 20mm rubber block installation distance for the TPO waterproof layer on both sides of the flat steel;

[0084] S50, install the pipelines, install the bridge and the threading tube above the rubber pad, and fix them on the pad;

[0085] S60, lay cables, thread the cables in the pipes and perform necessary waterproofing;

[0086] S70. According to the roof shape and the surface honeycomb aluminum plate method, deepen the lamp installation nodes and reserve the lamp installation position;

[0087] S80, determining the parameters of the lamp bracket using a lamp bracket parameter equation group according to the height of the installation location, the roof curvature, the lighting requirements, the lamp specifications, and the structural bearing capacity;

[0088] S90. Make lamp brackets and install them simultaneously during the installation of the roof steel structure.

[0089] The specific implementation methods of the above steps are described in detail below:

[0090] Step S10: Collecting pipeline layout related parameters

[0091] The purpose of this step is to obtain parameters such as roof curvature, number of pipelines, pipeline specifications, load requirements, and waterproof layer thickness, so as to provide a basis for subsequent pipeline layout optimization. The specific implementation method is as follows:

[0092] 1) Measure the roof curvature R. Use professional measuring equipment, such as a laser rangefinder or a total station, to measure the curvature radius at different locations on the roof, and take the average value as the overall curvature R of the roof.

[0093] 2) Count the number of pipelines n. According to the construction drawings and on-site survey, determine the number of pipelines n that need to be laid on the roof.

[0094] 3) Check the pipeline specifications. Obtain the diameter D of each pipeline by checking the technical parameter manual of the pipeline model. r , thermal expansion coefficient and other parameters.

[0095] 4) Calculate the total load L t According to the roof structure design drawings, the load classification calculation method is used to obtain the total roof bearing capacity L t .

[0096] 5) Measure the thickness of the waterproof layer T0. Use a professional thickness gauge to measure the average thickness T0 of the existing waterproof layer on the roof.

[0097] The acquisition of the above parameters provides necessary input data for the subsequent pipeline layout optimization model.

[0098] Step S20: Pipeline installation position and fixture positioning

[0099] The purpose of this step is to determine the pipeline installation location and fixture location on the actual roof based on the generated BIM drawings. The specific implementation method is as follows:

[0100] 1) Lay the grid on the roof. According to the BIM drawings, divide the roof surface into equally spaced grid coordinate systems to facilitate the subsequent positioning of pipelines and fixtures.

[0101] 2) Measure the starting and ending coordinates of the pipeline. Use a total station or laser rangefinder to measure the specific positions of the starting and ending points of each pipeline in the grid coordinate system.

[0102] 3) Mark the position of the fixture. The optimal fixture position P calculated according to the pipeline layout optimization model f , mark the corresponding grid positions.

[0103] 4) Record the measurement data. The measured starting and ending coordinates of the pipeline and the location coordinates of the fixtures shall be recorded in the ledger as a reference for subsequent construction.

[0104] Step S30: Making and pasting rubber pads

[0105] The purpose of this step is to pre-install rubber pads on the roof to create conditions for subsequent pipeline installation and waterproofing. The specific implementation method is as follows:

[0106] 1) Cut the rubber material. According to the design requirements, cut the rubber material into a pad with a trapezoidal cross section, with a short side length of 100 mm, a long side length of 150 mm, and a height of 100 mm.

[0107] 2) Apply special glue. Use special epoxy resin glue to apply on the installation position above the roof TPO waterproof membrane.

[0108] 3) Paste the rubber pads. Paste the prepared rubber pads one by one on the locations coated with glue, with a spacing of 1500 mm.

[0109] 4) Curing and maintenance: After the glue is completely cured, check the rubber pads that have been pasted to ensure that they are firmly adhered to the roof waterproofing layer.

[0110] Step S40: Install the bridge

[0111] The purpose of this step is to install a bridge structure for pipeline routing on the roof to create conditions for subsequent pipeline installation. The specific implementation method is as follows:

[0112] 1) Determine the bridge specifications. According to factors such as the number of pipelines, load requirements and structural strength, select appropriate specifications of galvanized steel bridges with good corrosion resistance.

[0113] 2) Measure the bridge position. Refer to the starting and ending coordinates of the pipeline measured in step S20 to determine the installation position of the bridge, and reserve a 20 mm installation distance on the roof steel structure column.

[0114] 3) Install the bridge. Use special bolt fasteners to firmly install the bridge on the roof steel structure column to ensure it is stable and reliable.

[0115] 4) Reserve waterproof distance. Reserve 20 mm of space on the flat steel on both sides of the bridge frame to facilitate subsequent waterproofing on the rubber pads.

[0116] Step S50: Pipeline installation

[0117] The purpose of this step is to install the pipeline on the bridge structure above the pre-set rubber pads to create conditions for subsequent cable laying. The specific implementation method is as follows:

[0118] 1) Place the pipeline on the pad. According to the starting and ending coordinates of the pipeline recorded in step S20, place each pipeline on the corresponding rubber pad in sequence.

[0119] 2) Fix the pipeline. Use special metal fasteners or plastic straps to firmly fix the pipeline on the rubber pad to ensure the stability of the pipeline position.

[0120] 3) Check the direction of pipelines. Check the direction of installed pipelines one by one by comparing them with the BIM drawings to see if they are consistent with the design, and adjust the pipelines that deviate from the design.

[0121] 4) Protective treatment: Anti-corrosion and waterproof materials are used to wrap the contact points between the pipeline and the bridge to prevent the pipeline from being damaged.

[0122] Step S60: Cable laying

[0123] The purpose of this step is to insert the power or signal cable into the pre-installed pipeline and perform necessary waterproofing. The specific implementation is as follows:

[0124] 1) Threading operation: Use professional threading equipment to thread the cables into each installed pipeline in turn.

[0125] 2) Fix the cables. Use special cable fixing clips to firmly fix the cables on the pipeline surface to prevent them from falling off.

[0126] 3) Pipeline reinforcement: Use sealant or waterproof casing to strengthen the pipeline interface after the cable is threaded to ensure waterproof performance.

[0127] 4) Insulation protection: Use insulating sheath or waterproof wrapping material to protect the exposed part of the cable to avoid being affected by the external environment.

[0128] Step S70: Reservation of lamp installation location

[0129] The purpose of this step is to reasonably reserve the lamp installation position according to the roof shape and surface paving method, so as to create conditions for the subsequent lamp installation. The specific implementation method is as follows:

[0130] 1) Determine the lighting requirements. According to the building's use function and lighting standards, determine the average illumination I0 that the roof needs to achieve.

[0131] 2) Plan the layout of lamps. Refer to the BIM drawings, combine the roof shape and paving method, and reasonably plan the installation location of lamps to meet the overall lighting requirements.

[0132] 3) Reserve installation holes. On the surface of the honeycomb aluminum plate on the roof, reserve installation holes of appropriate sizes according to the size of the lamps to facilitate the subsequent installation of the lamps.

[0133] 4) Mark the position coordinates. Record the plane coordinates (x, y) of each lamp installation position in the ledger to provide a basis for the subsequent lamp bracket design.

[0134] Step S80: Optimizing lamp bracket parameters

[0135] The purpose of this step is to use an optimization algorithm to determine the optimal parameters of the lamp bracket according to the roof conditions and lighting requirements to achieve the best lighting effect. The specific implementation is as follows:

[0136] 1) Establish an optimization equation for the bracket height. According to the required illumination I0, the lighting area A and the inclination angle θ of the lamp, the bracket height H is determined using the following optimization equation:

[0137]

[0138] In the formula, H0 is the base height, k1, k2, k3 are empirical coefficients, and ε6 is the random error term. The optimal coefficient value is obtained through experimental regression.

[0139] 2) Establish the bracket length optimization equation. According to the bracket height H and the lamp weight W l And the thickness of the waterproof layer T, the following optimization equation is used to determine the bracket length L:

[0140]

[0141] In the formula, L0 is the basic length, α1, α2, α3 are empirical coefficients, T0 is the reference waterproof layer thickness, and ε7 is the random error term. The optimal coefficient value is obtained through structural analysis and experimental regression.

[0142] 3) Establish the optimization equation of the bracket tilt angle. According to the ideal illumination I0 and the actual illumination I r And the coordinates of the lamp installation position (x, y), the following optimization equation is used to determine the bracket tilt angle θ:

[0143]

[0144] In the formula, k a is the adjustment coefficient, β1 and β2 are the empirical correction coefficients, L r and W r are the length and width of the roof respectively, and ε8 is the random error term. The optimal coefficient value is obtained through numerical simulation optimization.

[0145] 4) Comprehensive calculation of bracket parameters. The above three optimization equations are combined and used together with the lamp installation location information recorded in step S70 to calculate the height H, length L and tilt angle θ of the lamp bracket that meet the lighting requirements.

[0146] Step S90: Light fixture bracket production and installation

[0147] The purpose of this step is to make and install the lamp bracket on the roof steel structure according to the optimized bracket parameters, so as to create conditions for the subsequent lamp installation. The specific implementation method is as follows:

[0148] 1) Making an arc-shaped bracket: According to the bracket height H, length L and inclination angle θ calculated in step S80, two arc-shaped brackets are made of arc-shaped steel plates.

[0149] 2) Install the brackets. Install the two prepared arc-shaped brackets on the roof steel structure reserved in step S40 by means of bolts or the like, and ensure that the bracket positions are accurate.

[0150] 3) Adjusting the angle of the bracket: After the bracket is installed, the bracket's angle of inclination is adjusted by adjusting bolts or the like according to the optimal inclination angle θ calculated in step S80.

[0151] 4) Inspection and acceptance: Check the installed lamp bracket to ensure that it is firmly installed, the angle is accurately adjusted, and meets the requirements of subsequent lamp installation.

[0152] In summary, the Tpo waterproof curved steel structure roof floodlighting construction method of the present invention makes full use of the pipeline layout optimization model and the lamp rack parameter optimization equation group, and adopts a systematic installation step, thereby achieving the rationality of the pipeline layout, the targeted installation of lamps and lanterns, and the reliability of the overall construction.

[0153] Specifically, the principle of the present invention is to organically combine the two key issues of pipeline layout optimization and lamp installation parameter optimization, and to achieve them through systematic construction steps. The design principle of this technical solution is as follows:

[0154] 1. Construction of pipeline layout optimization model

[0155] Pipeline layout is an important part of the floodlighting system of curved steel structure roofs, and its rationality directly affects the safety and reliability of the entire system. The present invention adopts a pipeline layout optimization model. According to factors such as roof curvature R, number of pipelines n, pipeline specification parameters D_r, total load L_t, and waterproof layer thickness T_0, the optimal fixed spacing and fixture position of the pipelines are determined through mathematical modeling and parameter optimization. This not only meets the bearing capacity requirements of the pipelines, but also provides a guarantee for the integrity of the waterproof layer.

[0156] 2. Application of rubber pads and bridges

[0157] In order to ensure the safety and waterproof performance of the pipeline, the present invention pre-installs rubber pads and galvanized steel bridges on the roof. The design of the rubber pads creates convenient conditions for the subsequent installation and waterproofing of the pipeline, while the application of the bridge provides reliable support and protection for the pipeline. These measures can not only effectively prevent the pipeline from being damaged by external forces, but also have good compatibility with the original waterproof layer, ensuring the waterproof performance of the entire system.

[0158] 3. Optimization of lamp bracket parameters

[0159] In view of the characteristics of curved steel structure roof lighting, the present invention adopts a lamp stand parameter optimization equation group, and calculates the lamp stand height H, length L and tilt angle θ that meet the ideal lighting effect according to factors such as the required illumination I_0, the lighting area A and the lamp installation position coordinates (x, y). This can not only ensure that the lighting effect of each lamp meets the standard, but also achieve uniform floodlighting of the entire roof, thereby improving the user experience of the building.

[0160] In summary, the Tpo waterproof curved steel structure roof floodlighting construction method of the present invention fully considers multiple factors such as pipeline layout, waterproof performance and lighting effects, and through systematic design and optimization, realizes the coordination of various subsystems, thereby achieving a relatively ideal technical effect.

[0161] In order to better understand and implement the present invention, an embodiment of a specific application scenario of the present invention is provided below: A newly built smart manufacturing industrial park in a certain city adopts a curved steel structure as the roof form of the main building. In order to achieve uniform floodlighting on the roof while avoiding affecting the overall beauty of the building, the project party decided to adopt the Tpo waterproof curved steel structure roof floodlighting construction method proposed in the present invention for construction. The principle is based on the characteristics that the Tpo waterproof layer cannot be drilled, the electromechanical pipelines cannot be directly fixed, and the curved steel structure lamp installation nodes are complex. Through a bracket attached to the roof steel structure and a rubber support block that can be pasted on the Tpo waterproof layer, and by customizing a special bracket for the lamp, a technical method for solving the floodlighting construction pipeline bracket and lamp installation is solved.

[0162] The specific implementation process is as follows:

[0163] 1. Comprehensive layout of pipelines

[0164] First, the project team conducted a comprehensive investigation and measurement of the roof curvature, number of pipelines, pipeline specifications, load requirements, and waterproof layer thickness of the new plant. Based on the data obtained, the pipeline layout optimization model was used to optimize the fixed spacing and fixture positions of the pipelines. The main parameters involved in the model are as follows:

[0165] Roof curvature R = 15m;

[0166] Number of pipelines n = 32

[0167] Pipeline Specification Parameters D r =25mm;

[0168] Total load L t =5.2kN;

[0169] Waterproof layer thickness T0 = 3mm;

[0170] Through model calculation, the optimal pipeline fixing spacing is 1.5m, and the location of the fixing device is distributed in a sinusoidal wave along the pipeline. Subsequently, the designers used BIM software to comprehensively arrange the pipelines and generate detailed construction drawings.

[0171] 2. Pipeline installation position measurement

[0172] Based on the aforementioned BIM drawings, the survey team actually measured and located the pipeline installation locations and fixture locations. The total station was used to measure the starting and ending coordinates of each pipeline, as well as the specific locations of the fixtures, and recorded them in the ledger for future reference.

[0173] 3. Rubber pad and bracket installation

[0174] In order to ensure the stability and waterproof performance of pipeline installation, the project party customized a special rubber pad. The cross section of the pad is trapezoidal, with a short side length of 100mm, a long side length of 150mm, and a height of 100mm. The rubber block has a built-in 5cm long nut. The specification of the nut for fixing the JDG wire pipe is M4, and the fixing bridge is M8. According to the arrangement of the pipeline above the pad, an integrated pad is selected, such as Figure 2 shown.

[0175] First, at the pipeline layout position above the roof TPO waterproofing membrane, these rubber pads are glued and fixed one by one with a special epoxy resin glue, with a spacing of 1.5m. Then, the project team made a galvanized steel bracket and installed it on the column of the roof steel structure with bolts. The flat steel on both sides reserved 20mm space for installing rubber pads. Finally, apply glue to the bottom of the previously pasted rubber pads and place them on the bottom of the flat steel of the bracket and the waterproof layer to form a stable support system. The installation of the bracket is as follows: first fix the manufactured bracket to the steel structure roof pillar, reserve 20mm rubber block installation distance for the TPO waterproof layer on the flat steel on both sides, then apply glue to the bottom of the rubber block, place it on the bottom of the flat steel and bond it to the waterproof layer; the rest of the positions are pasted with rubber blocks according to the installation direction of each extended pipeline of 2m. The main function of the rubber block is to support the pipeline. After the pipeline is installed, in order to prevent the horizontal displacement of the pipeline, a bracket is made. The steel structure roof support column is used as a fixing point. After the pipeline is installed, a customized bracket is made with flat steel and connected to the pipeline. The fixed pipeline is placed so that the pipeline does not move horizontally and does not bear the load. See the bracket diagram for details. Figure 3 .

[0176] 4. Pipeline installation

[0177] With the aforementioned rubber pads and brackets as the foundation, the installation of pipelines becomes very simple. First, place the 100mm×100mm galvanized steel bridge frame on top of the rubber pads and fix it to the pads with special metal fasteners. Then, install the pipeline (using the JDG20 model) on the bridge frame and waterproof the pipeline joints with heat shrink tubing. To ensure safety, the bridge frame bracket also needs to be reliably grounded. See the pipeline installation diagram Figure 4 .

[0178] During the entire pipeline installation process, the designers strictly followed the requirements of the BIM drawings and conducted repeated checks against the actual situation to ensure that the pipeline route was consistent with the design.

[0179] 5. Cable laying

[0180] After the pipeline is installed, the construction workers start laying the cables. First, carefully check the integrity of the mouth guards of each pipe, and supplement and replace them when necessary. To ensure the smooth threading of the cables, a proper amount of talcum powder is blown into the pipe.

[0181] When threading the wires, the designers strictly follow the following requirements:

[0182] 1. Before threading the wire pipe, first check whether the mouth guards of each pipe mouth are neat. If there are any omissions or damages, they should be supplemented and replaced; when the pipeline is long or has many turns, blow a proper amount of talcum powder into the pipe while threading; when two people thread the wire, they should cooperate and coordinate, one pulling and the other pushing;

[0183] 2. When threading wires, the following issues should be noted: wires of the same AC circuit must be threaded in the same pipe; wires of the same circuit but different voltages and AC and DC wires must not be threaded in the same pipe. Circuits with a nominal voltage below 50V, power circuits of the same equipment or the same assembly line equipment and control circuits without special interference requirements, several circuits of the same lantern, and several circuits of the same type of lighting, but the total number of wires in the pipe should not exceed 8, can be threaded in the same pipe.

[0184] 3. The conductor should be able to move freely at the deformation joint, and the conductor should have a certain margin.

[0185] 4. When the length exceeds the following, it should be fixed at the pipe mouth and the junction box: 30m for wires with a cross-sectional area of ​​50mm2 or less; 20m for wires with a cross-sectional area of ​​70-95mm2; 18m for wires with a cross-sectional area between 180-240mm2.

[0186] 5. The conditions that wire connection should meet are: the wire joints cannot increase the resistance value; the stressed wires cannot reduce the original mechanical strength; the original insulation strength cannot be reduced. Through the above standardized operations, the safety and reliability of the cable are ensured.

[0187] 6. Deepening of lighting installation nodes

[0188] According to the building's use function and lighting standards, the project team determined the average illumination required for the factory roof to be I0 = 300Lx. At the same time, combined with the actual shape of the roof and the surface paving method, the designers reserved appropriate-sized lighting installation holes on the BIM model and recorded the plane coordinates (x, y) of each hole in the ledger.

[0189] In order to achieve uniform floodlighting effect on the entire roof and avoid glare, the project team customized arc-shaped floodlights with a length of 0.5m-1.0m according to the curvature characteristics of the roof. This not only meets the lighting requirements, but also has an appearance that is coordinated with the roof shape.

[0190] 7. Lighting bracket design and installation

[0191] In view of the characteristics of the curved roof, the project team used the lamp bracket parameter optimization equation group to design the lamp bracket. The main parameters involved are as follows:

[0192] The coordinates of the lamp installation position are (x, y) = (12.5m, 15.2m);

[0193] Required illumination I0 = 300Lx;

[0194] Actual measured illuminance I r =280Lx;

[0195] Roof size is L r =40m,W r =25m;

[0196] Lamp weight W l =12kg;

[0197] Waterproof layer thickness T = 3mm;

[0198] Based on the above parameters, the optimal design of the lamp bracket is as follows:

[0199] Support height H = 2.8m;

[0200] Bracket length L = 1.2m;

[0201] The bracket tilt angle θ = 25°;

[0202] The calculation formula of the bracket height is:

[0203]

[0204] The formula for calculating the bracket length is:

[0205]

[0206] The calculation formula of the bracket tilt angle is:

[0207]

[0208] The construction personnel have to solve the problem of achieving the design effect based on the above parameters. After repeated testing of new technology solutions, the construction personnel have specially designed floodlighting lamps and their fixed installation structures suitable for this project. The lamps can be installed on the inclined steel structure and the installation angle of the lamps can be adjusted by two arc plates. See the schematic diagram of the lamp bracket for details. Figure 5 .

[0209] The lamp brackets are installed simultaneously during the installation of the roof steel structure according to the arrangement of the lamps.

[0210] 1. Lighting installation process:

[0211] The general installation process flow of various types of lamps in this project is: installation components → lamp inspection → lamp assembly → lamp installation → power-on trial operation.

[0212] 2. Lighting debugging

[0213] After the lamps are installed and the insulation resistance of each branch is tested and qualified, they are allowed to be powered on for trial operation. After power on, they should be carefully inspected and checked to see if the lamps are lighting normally and if the control is flexible and accurate. If any problems are found, the power must be turned off first, and then the cause must be found and repaired.

[0214] Based on the above calculation results, the project team made a lamp bracket consisting of two curved steel plates and installed it synchronously during the installation of the roof steel structure. After the installation, the inclination angle of the lamp was adjusted to the optimal state by adjusting the bolts on the bracket, ensuring uniform floodlighting effect on the entire roof.

[0215] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A Tpo waterproof curved steel structure roof floodlighting construction method, characterized in that: The following steps are involved: S10. Collect parameters related to pipeline layout, including roof curvature, number of pipelines, pipeline specifications, load requirements and waterproof layer thickness, use pipeline layout optimization model to determine pipeline fixed spacing and fixture positions, and use BIM software to comprehensively arrange roof floodlighting pipelines to obtain BIM drawings; S20. Conduct on-site measurement and positioning of pipeline installation locations and fixtures according to BIM drawings; S30, making a rubber pad, wherein the cross section of the rubber pad is a trapezoid; and pasting the rubber pad on the top of the Tpo waterproof membrane with a special glue; S40, install the bridge frame, fix the bridge frame to the steel structure roof support, and reserve a 20mm rubber block installation distance for the TPO waterproof layer on both sides of the flat steel; S50, installing pipelines, installing the bridge and the threading tube above the rubber pad, and fixing them on the pad; S60, lay cables, thread the cables in the pipes and perform necessary waterproofing; S70. According to the roof shape and the surface honeycomb aluminum plate method, deepen the lamp installation nodes and reserve the lamp installation position; S80, determining the parameters of the lamp bracket using a lamp bracket parameter equation group according to the height of the installation location, the roof curvature, the lighting requirements, the lamp specifications, and the structural bearing capacity; S90, manufacturing a lamp bracket, and simultaneously installing the lamp bracket during the installation of the roof steel structure.

2. A Tpo waterproof curved steel structure roof floodlighting construction method according to claim 1, characterized in that: The pipeline layout optimization model includes a load distribution equation, a spacing optimization equation, a fixture position equation, a waterproof layer thickness equation, and a construction process constraint equation.

3. A Tpo waterproof curved steel structure roof floodlighting construction method according to claim 2, characterized in that: The load distribution equation is used to calculate the load distribution of each pipeline; The spacing optimization equation is used to optimize the minimum spacing between pipelines; The fixture position equation is used to determine the optimal position of the fixture; The waterproof layer thickness equation takes into account the effect of the waterproof layer on fixtures and pipelines; The construction process constraint equation ensures the feasibility of each process during the construction process.

4. A Tpo waterproof curved steel structure roof floodlighting construction method according to claim 3, characterized in that: The lamp stand parameters include stand height, stand length, and stand tilt angle.

5. A Tpo waterproof curved steel structure roof floodlighting construction method according to claim 4, characterized in that: The lamp stand parameter equation group includes a bracket height optimization equation, a bracket length optimization equation, and a bracket tilt angle optimization equation.

6. A Tpo waterproof curved steel structure roof floodlighting construction method according to claim 5, characterized in that: The bracket height optimization equation is used to calculate the bracket height to meet the lighting requirements. The input is the installation location height, the required illumination, the lighting area, and the lamp inclination angle. The output is the optimized bracket height. The bracket length optimization equation is used to calculate the length of the bracket to ensure that the lamp is safely installed without affecting the waterproof layer. The input is the bracket height, the lamp weight, and the waterproof layer thickness. The output is the optimized bracket length. The bracket tilt angle optimization equation is used to determine the optimal tilt angle of the bracket to achieve the best lighting effect. The input is the ideal illuminance, actual illuminance, lamp installation position coordinates, and roof size. The output is the optimized bracket tilt angle.

7. A Tpo waterproof curved steel structure roof floodlighting construction method according to claim 6, characterized in that: The cross section of the rubber pad is a trapezoid, with a short side of 100 mm, a long side of 150 mm and a height of 100 mm.

8. A Tpo waterproof curved steel structure roof floodlighting construction method according to claim 7, characterized in that: The distance between the rubber pad and the top of the Tpo waterproof membrane is 1500 mm.

9. A Tpo waterproof curved steel structure roof floodlighting construction method according to claim 8, characterized in that: The bridge frame is specifically made of galvanized steel bridge frame, which has anti-corrosion performance and effectively supports and protects pipelines.

10. A Tpo waterproof curved steel structure roof floodlighting construction method according to claim 9, characterized in that: The lamp bracket comprises two arc plates for adjusting the installation angle of the lamp.

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