Glulam construction modular roofing structure construction method

Abstract

The application discloses a kind of glued wood structure building modularization roof structure construction method, unit block is directly hoisted after being pre-assembled on ground construction is completed, first wood structure roof panel is divided into different independent partitions, and unit block of each independent partition is assembled on ground, then directly hoisted as a whole is carried out, the glued wood structure building modularization roof structure construction method of the application avoids the erection of scaffold system, so that scaffold does not affect the synchronous performance of other construction procedures, and reduces labor cost.The application solves the problems of long construction period and high labor cost in the traditional construction method of wood structure building construction roof panel.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a construction method for a modular roof structure of glued laminated timber buildings. Background Technology

[0002] In traditional timber-frame construction, roofing is typically done by first erecting scaffolding and then installing the roof panels on the beams. This traditional method has several drawbacks:

[0003] First, the traditional method requires the erection of scaffolding on site, and the dismantling of the scaffolding after construction is completed. Furthermore, the scaffolding must be erected from the ground, and the panels of the intermediate layer cannot be constructed before the scaffolding is dismantled. Therefore, the traditional method has a long construction cycle and will increase labor costs significantly.

[0004] Secondly, all construction work involves working at heights, requiring extremely stringent safety measures, which significantly increases the cost of safety measures.

[0005] Third, carrying out construction work at heights is a test of the workers' skills, and if the construction quality is substandard and rectification is required, demolition and alteration work at heights is also quite difficult.

[0006] Fourth, construction using traditional methods increases the number of times materials need to be hoisted due to their dispersed nature, thus increasing the use of machinery.

[0007] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0008] To overcome the shortcomings of existing technologies, a construction method for modular roof structures of glued laminated timber buildings is provided to solve the problems of long construction cycles and high labor costs associated with traditional construction methods for roof panels of timber structures.

[0009] To achieve the above objectives, a construction method for a modular roof structure of a glued laminated timber (GLBT) building is provided. The GLBT structure includes a timber arch frame and roof panels. The timber arch frame includes a central beam and side beams. Reinforced concrete columns are supported at both ends of the central beam. Diagonal bracing is formed on opposite sides of the reinforced concrete columns. Side beams are respectively provided on opposite sides of the central beam. Diagonal bracing is installed at both ends of the side beams on one side of the two reinforced concrete columns. The roof panels are laid on the central beam and the side beams. The construction method for the modular roof structure of the GLBT building includes the following steps:

[0010] The roof panel is divided into multiple zones, and the multiple zones are arranged symmetrically about the central beam as the axis of symmetry.

[0011] Multiple wooden gratings are provided, and the wooden gratings are erected on the ground at the construction site;

[0012] A flame-retardant board is installed at the bottom of the wooden grating;

[0013] Fill the wooden grid with insulating rock wool;

[0014] A support plate is laid on top of the wooden grating to form a unit panel;

[0015] The unit panels are hoisted and laid in each section, such that both ends of the unit panels overlap the middle beam and the side beam, respectively.

[0016] Furthermore, the elevation of the side beam is higher than the elevation of the middle beam.

[0017] Furthermore, the middle beam and the side beam are both arc-shaped.

[0018] Furthermore, the flame-retardant plate includes a lower flame-retardant layer and an upper flame-retardant layer stacked together, wherein the thickness of the lower flame-retardant layer is greater than the thickness of the upper flame-retardant layer.

[0019] Furthermore, the support plate is an OSB board.

[0020] Furthermore, after the unit panels are laid, a waterproof membrane is laid on the support plate of the multiple unit panels.

[0021] The beneficial effects of this invention are as follows: The modular roof structure construction method for glued laminated timber (GLLT) buildings allows for the direct hoisting of pre-assembled unit panels on the ground. During construction, the timber roof panels are first divided into different independent zones. After assembling the unit panels for each independent zone on the ground, the entire structure is then hoisted directly. This method avoids the need for scaffolding, ensuring that scaffolding does not interfere with other construction processes and reducing labor costs. It also reduces the need for workers to perform high-altitude work, lowering the cost of safety measures for such work. Assembling unit panels on the ground allows for parallel construction while beams and columns are being hoisted; the roof units can be hoisted directly after the beams and columns are installed. This modular roof structure construction method for GLLT buildings, by dividing the roof system into different zones for overall hoisting, reduces the number of hoisting machines used, significantly shortens the construction period, saves costs, and makes construction quality more controllable. Attached Figure Description

[0022] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0023] Figure 1 This is a schematic diagram of a modular roof structure construction method for glued laminated timber buildings according to an embodiment of the present invention.

[0024] Figure 2 This is a schematic diagram of the partitioning of the roof panel according to an embodiment of the present invention.

[0025] Figure 3 This is a schematic diagram of the wooden arch frame according to an embodiment of the present invention.

[0026] Figure 4 This is a schematic diagram of the structure of a unit plate according to an embodiment of the present invention. Detailed Implementation

[0027] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] See Figure 1 and Figure 3 As shown, in this embodiment, the glued laminated timber structure includes a timber arch frame 1 and roof panels. The timber arch frame 1 includes a central beam 11 and side beams 12. Reinforced concrete columns 13 are supported at both ends of the central beam 11. Diagonal braces 14 are formed on opposite sides of the reinforced concrete columns 13. Side beams 12 are respectively provided on opposite sides of the central beam 11. The two ends of the side beams 12 are respectively installed on the diagonal braces 14 on one side of the two reinforced concrete columns 13. The roof panels are laid on the central beam 11 and the side beams 12.

[0030] The elevation of edge beam 12 is higher than that of middle beam 11. Both middle beam 11 and edge beam 12 are curved.

[0031] The roof panel includes a flame-retardant board 21, a wooden grid 22, thermal insulation rock wool 23, and a support board 24.

[0032] A flame-retardant board 21 is installed at the bottom of the wooden grating 22. The wooden grating 22 is filled with insulating rock wool 23. A support board 24 is laid on top of the wooden grating 22. A waterproof membrane 25 is laid on the support board 24.

[0033] The flame-retardant board 21 includes a lower flame-retardant layer and an upper flame-retardant layer stacked together. The thickness of the lower flame-retardant layer is greater than the thickness of the upper flame-retardant layer.

[0034] The lower flame-retardant layer is made of 15mm thick fire-resistant gypsum board. The upper flame-retardant layer is made of 12mm thick fire-resistant gypsum board.

[0035] The insulation rock wool is 130mm thick, of which 65mm thick is double-layered with staggered joints.

[0036] The support plate 24 is made of 12mm thick OSB board.

[0037] The waterproof membrane is a 1.5mm thick nail-resistant and puncture-resistant polymer waterproof membrane.

[0038] Reference Figures 1 to 4 As shown, the present invention provides a construction method for a modular roof structure of glued laminated timber buildings, comprising the following steps:

[0039] S1: Divide the roof panel into multiple zones a, and arrange the multiple zones a in an axially symmetrical manner with the central beam 11 as the axis of symmetry.

[0040] S2: Provide multiple wooden gratings 22, and install the wooden gratings 22 on the ground of the construction site.

[0041] Based on the designated zones, a materials list is compiled. Timber is then processed according to this list and assembled. Quality is monitored in real-time during assembly to ensure the wooden grating is stable, does not wobble, and does not detach after installation. The dimensions of the wooden grating must meet design requirements, and the spacing between grating sections must be consistent and conform to the drawings. The relative elevation of the wooden grating within each roof unit must be consistent, with no unevenness.

[0042] S3: Install flame-retardant plate 21 at the bottom of the wooden grating 22.

[0043] After the wooden grating is assembled, fire-retardant boards are laid on it. The fire-retardant boards are 15mm + 12mm thick. When installing the fire-retardant boards, appropriate gaps should be left at the joints, and the bevels must meet perfectly. After cleaning the loose soil from the joints, apply a coat of 50% concentration 108 glue solution. Use a small scraper to embed the joint putty into the board joints, ensuring the joints are fully and firmly filled, and smoothed to the bevel. After the putty dries completely, check for cracks in the filled joints. If cracks are found, analyze the cause and re-fill the joints. Apply a layer of putty about 1mm thick at the bevel of the joint, then attach fiberglass tape, press firmly, and smooth. When the putty begins to harden but is still damp, apply another layer of putty, embedding the fiberglass tape in the putty, and fill the board joints completely and smooth. During the laying process, ensure that the joints between the two layers of fire-retardant boards are staggered. After the fire-retardant boards are laid, ensure the surface is flat.

[0044] S4: Fill the wooden grid 22 with insulating rock wool 23.

[0045] Double-layered 65mm thick rock wool insulation boards are stacked in a staggered pattern between wooden purlins with embedded wooden grids. During filling, the rock wool insulation boards should be firmly against the base surface, laid flat and securely, and the joints of the upper and lower layers should be staggered. For roofs with a significant slope, metal or plastic fasteners should be used to secure the rock wool insulation to the base layer. After the rock wool insulation is filled, it should not be walked on. The base layer should be flat, dry, and clean during the insulation installation process. Furthermore, moisture-proof, waterproof, and fire-proof measures should be taken during the insulation filling process.

[0046] S5: A support plate 24 is laid on top of the wooden grating 22 to form a unit panel 2.

[0047] After the thermal insulation rock wool board is filled, lay a 12mm thick OSB board (i.e., OBS board) on top. When laying the OBS board, make sure to fix it firmly to the wooden grid frame so that it does not shake or fall off. After laying, ensure that the surface is flat, the edges of the OBS board are not raised, the surface is not uneven, and after cleaning the surface, seal it with plastic film.

[0048] After the roof panels are assembled, they are covered with plastic film to protect the fire-retardant boards from water and moisture. The assembled roof units are then neatly stacked in a dry place, with the bottom raised 200mm off the ground. The surface is covered with tarpaulin for waterproofing, and a warning perimeter is set up to prevent damage to the finished product from other overlapping processes.

[0049] S6: Hoist the unit panels and lay them in each section a, so that the two ends of the unit panel 2 overlap the middle beam 11 and the side beam 12 respectively.

[0050] Before hoisting the unit panels, mark the positioning dimensions of the roof units on the roof beams, and then hoist the unit panels to their corresponding positions for installation and fixation. During hoisting, avoid collisions that could damage the integrity of the unit panels. During installation, ensure that each unit panel is installed on the positioning dimensions to avoid quality problems caused by inaccurate installation.

[0051] After the unit panels are hoisted to their positions on the roof, their planar positions are precisely adjusted according to the marked lines on the wooden beams, and they are temporarily secured with self-tapping screws. The adjusted unit panels are then permanently fixed in place using self-tapping screws.

[0052] S7: After the unit panel 2 is laid, waterproof membrane 25 is laid on the support plate 24 of the multiple unit panels 2.

[0053] This invention discloses a modular roof structure construction method for glued laminated timber (GLBT) buildings. The method involves pre-assembling unit panels on the ground and then directly hoisting them into place. During construction, the timber roof structure is first divided into different independent zones. After assembling the unit panels for each independent zone on the ground, the entire structure is then hoisted into place. This method avoids the need for scaffolding, ensuring that scaffolding does not interfere with other construction processes. It also reduces the number of workers performing high-altitude work, lowering the cost of safety measures for such work. Assembling unit panels on the ground allows for parallel construction while beams and columns are being hoisted; the roof units can be hoisted directly after the beams and columns are installed. This modular roof structure construction method divides the roof system into different zones for overall hoisting, reducing the number of hoisting machines required, significantly shortening the construction period, saving costs, and ensuring more controllable construction quality.

[0054] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A construction method for a modular roof structure of glued laminated timber buildings, characterized in that, The glued laminated timber (GLLT) structure includes a timber arch frame and roof panels. The timber arch frame includes a central beam and side beams. Reinforced concrete columns are supported at both ends of the central beam, and diagonal bracing is formed on opposite sides of the reinforced concrete columns. Side beams are provided on opposite sides of the central beam, and diagonal bracing is installed at both ends of each side of the side beams on one side of the two reinforced concrete columns. The roof panels are laid on the central beam and the side beams. The construction method for the modular roof structure of the GLLT building includes the following steps: The roof panel is divided into multiple zones, and the multiple zones are arranged symmetrically about the central beam as the axis of symmetry. Multiple wooden gratings are provided, and the wooden gratings are erected on the ground at the construction site; A flame-retardant board is installed at the bottom of the wooden grating; Fill the wooden grid with insulating rock wool; A support plate is laid on top of the wooden grating to form a unit panel; The unit panels are hoisted and laid in each section, such that both ends of the unit panels overlap the middle beam and the side beam, respectively.

2. The construction method for modular roof structure of glued laminated timber building according to claim 1 is characterized in that, The elevation of the side beam is higher than that of the middle beam.

3. The construction method for modular roof structure of glued laminated timber building according to claim 1 is characterized in that, The middle beam and the side beams are both arc-shaped.

4. The construction method for modular roof structure of glued laminated timber building according to claim 1 is characterized in that, The flame-retardant plate includes a lower flame-retardant layer and an upper flame-retardant layer stacked together, wherein the thickness of the lower flame-retardant layer is greater than the thickness of the upper flame-retardant layer.

5. The construction method for modular roof structure of glued laminated timber building according to claim 1 is characterized in that, The support plate is OSB board.

6. The construction method for modular roof structure of glued laminated timber building according to claim 1 is characterized in that, It also includes laying a waterproof membrane on the support plate of multiple unit panels after the unit panels are laid.

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