Roof decoration grating curtain wall and construction method

Abstract

The invention relates to a roof decoration grating curtain wall and a construction method, and relates to the technical field of decoration curtain walls, the system comprises concrete piers, pre-buried plates, steel stand columns, stiffening ribs, transverse steel beams, longitudinal steel beams, T-shaped supports, top gratings, side gratings, steel insertion cores and split bolts; wherein the concrete pier is arranged on the upper portion of a roof structure, the embedded plate is embedded in the top of the concrete pier, the steel stand column is fixed to the embedded plate in a full-length welding mode, and the stiffening ribs are arranged between the steel stand column and the embedded plate; the transverse steel beams and the longitudinal steel beams are connected to form a frame structure, the top grids and the side grids are installed on the steel beams through T-shaped supports, the top grids are connected through split bolts, aluminum alloy insertion cores are arranged in the top grids to achieve flexible connection, and steel insertion cores are arranged at joints of the steel beams to relieve temperature deformation. The system is stable in structure, high in installation precision, high in modularization degree and suitable for rapid deployment and high-quality implementation of large-span roof grating decoration engineering.

Description

Technical Field

[0001] The present invention relates to the technical field of decorative curtain walls, in particular to a roof decorative grille curtain wall and a construction method thereof. Background Art

[0002] In modern buildings, roof decorative grille curtain walls are widely used due to their aesthetics and functionality. However, the existing technology has the following major problems: 1. Deformation of the steel structure due to thermal expansion and contraction: The rigid connection between the traditional steel structure and the grille is prone to thermal expansion and contraction stress when the temperature changes, causing the grille to deform and affecting the decorative effect.

[0003] 2. Construction errors affect the decorative effect: Due to the lack of precise adjustment methods during the construction process, the installation elevation and levelness of the grille are difficult to ensure, resulting in unsatisfactory decorative effects.

[0004] 3. High maintenance and replacement costs: In existing structures, the connection between the grille and the support is complex, requiring a lot of disassembly work for maintenance and replacement, which increases costs and time.

[0005] At the same time, in order to create a better roof decoration effect and make the roof more varied and beautiful, a horizontal or vertical decorative grille is usually set up on the roof to change the problems of traditional roofs that are not single, not beautiful, and have a poor user experience. If the roof decoration design is done well, the roof decoration effect is guaranteed, and the impact of equipment on the overall aesthetics of the roof is reduced, it has become an issue that needs to be solved urgently. Summary of the Invention

[0006] The purpose of the present invention is to provide a roof decorative grille curtain wall and a construction method to solve the problems of grille deformation caused by rigid connection in the prior art and the problems of difficulty in grille installation and maintenance.

[0007] The present invention is realized by adopting the following technical scheme: a roof decorative grille curtain wall, characterized in that it comprises a concrete pier, an embedded plate, a steel column, a stiffening rib, a transverse steel beam, a longitudinal steel beam, a T-shaped support, a top grille, a side grille, a steel insert and a tension bolt; wherein the concrete pier is arranged on the upper part of the roof structure layer, is a rectangular solid structure, and is cast by C25 fine stone concrete; the embedded plate is embedded in the top surface of the concrete pier and cast integrally with the concrete, the embedded plate is a Q235 steel plate, and a bent steel bar is welded at the bottom; the lower end of the steel column is connected to the The embedded plates are fully welded, and the steel columns are surrounded by multiple stiffening ribs welded between the columns and the embedded plates. The transverse and longitudinal steel beams are installed on top of the steel columns and connected by welding to form a frame structure. The top and side grilles are installed above the steel beams and mounted using T-shaped brackets with vertical strip holes for elevation adjustment. The top grilles are connected by tension bolts, and a buckle cover is installed at the bottom to conceal the tension bolts. A steel insert is installed between the transverse and longitudinal steel beams to form a flexible connection structure. This steel insert structure solves the problem of weld stress concentration caused by thermal expansion and contraction, and enhances the steel structure's resistance to deformation.

[0008] Furthermore, the embedded plate is 10mm thick and has a hot-dip galvanized surface for corrosion protection. Four Φ12 steel bars are welded to the bottom, spaced 150mm apart, with a 135° bend angle and a 50mm bend height. This bend provides effective anchoring, and the hot-dip galvanizing treatment ensures the structural corrosion life and connection stability.

[0009] Furthermore, the steel columns are H-shaped steel members with cross-sectional dimensions of H150×150×6×9, and their bases are fully welded to the embedded plates using CO2 gas shielded welding. The use of standard steel members enhances their versatility and mechanical properties, while CO2 gas shielded welding improves weld strength and weld density.

[0010] Furthermore, the steel column is equipped with four 8mm thick, trapezoidal stiffening ribs made of Q235 steel. These ribs are located in the middle of the four sides of the steel column. The four-sided stiffening ribs effectively limit local deformation at the bottom of the steel column and enhance the three-dimensional constraint stiffness of the load-bearing node.

[0011] Furthermore, the steel inserts are installed at the junctions between the transverse and longitudinal steel beams. These inserts are fixed at one end and slide at the other, mitigating stress caused by thermal expansion and contraction. This insert structure provides micro-displacement space, releasing structural self-stress and preventing problems such as grid misalignment and cracking.

[0012] Furthermore, the top grille is constructed from an aluminum alloy profile, internally fitted with an aluminum alloy insert. This insert is a hollow rectangular tube with an insertion length of at least 80mm, providing a flexible connection between the grilles. This insert connection enhances the installation stability and bending resistance of the grille joints, improving the integration of the curtain wall system.

[0013] Furthermore, the aluminum alloy insert is slightly smaller than the internal cavity of the top grille, with an insertion clearance of no more than 0.5 mm, and is provided with a limiting rib to prevent it from slipping out. The limiting rib structure enhances the insert's anti-slip ability and improves connection security.

[0014] Furthermore, the contact area between the bottom of the top grille and the T-shaped support is provided with longitudinal anti-slip grooves with a depth of 0.5 to 1.0 mm and a spacing of 3 mm to improve friction. This detailed structure improves the contact friction between the grille and the support, effectively preventing the grille from slipping due to vibration or wind loads.

[0015] Furthermore, the T-shaped support includes a base plate and two vertical support plates. The base plate is equipped with self-tapping screw mounting holes, and the vertical support plates are equipped with vertical strip holes for adjusting the installation elevation of the top grille. The support structure has a height adjustment function, which facilitates on-site error correction and ensures installation accuracy.

[0016] A construction method for a roof decorative grille curtain wall comprises the following steps: Step 1: Deepen the design. Based on the building roof structure and functional requirements, use BIM modeling technology to simulate the layout of concrete piers, steel columns, transverse steel beams, longitudinal steel beams, T-shaped supports, top grilles, and side grilles. Complete component numbering, processing parameter extraction, and layout diagram output; Step 2: Material processing and component prefabrication: Steel components and aluminum alloy grilles are processed according to the detailed design drawings, including steel columns, stiffeners, steel inserts, embedded plates, T-shaped supports and aluminum alloy inserts. The surface of the components is treated with anti-corrosion and numbered. Step 3: Measure and lay out the roof structure using a total station and laser level to lay out the vertical and horizontal control lines, establish a construction positioning grid, and determine the specific positioning points of the concrete piers, steel columns, and steel beam nodes with a control accuracy of ±1mm. Step 4: Concrete pier and embedded plate construction: Set up formwork at the layout location, install bent steel bars and embedded plates, pour C25 fine stone concrete to form the concrete pier, set 4 Φ12 steel bars at the bottom of the embedded plate for anchoring, and maintain for no less than 7 days after pouring; Step 5: Install the steel columns and stiffening ribs. When the concrete pier strength reaches the design requirements, the steel columns are positioned and installed on the embedded plates by hoisting. They are connected to the embedded plates by full welding. Stiffening ribs are installed on the four sides of the steel columns, one on each side, and welded to the columns and embedded plates. Step 6: Install the steel beams and steel inserts. Weld the longitudinal and transverse steel beams to the top of the steel columns according to the design sequence. Install steel inserts between the steel beams for flexible connection to improve the structural deformation adaptability. Step 7: Install the T-shaped support on the top of the steel beam. Each support is fixed with self-tapping screws. The vertical support plate of the T-shaped support is provided with vertical strip holes to achieve fine adjustment of the top grid elevation. The adjustment accuracy is ±1mm. Step 8: Install the top grille. Insert the top grilles into the T-shaped supports one by one. The grilles are flexibly connected by aluminum alloy inserts with a length of not less than 80mm. The joints are fixed with tension bolts and covered with aluminum alloy buckle covers. Step 9: Install the side grilles. Install the side grilles around the frame and fix them with the same T-shaped supports to form a complete decorative curtain wall system with the top grille. Step 10: Elevation adjustment and accuracy review: Use a ruler and electronic level to re-measure the levelness and gap consistency of the entire grille system. Adjust the height of the top grille with the T-shaped support to ensure that the grille joints are consistent and the interfaces are neat. Step 11: Sealing and gluing. Apply weather-resistant sealant to the grille joints and edges. The thickness of the sealant should be controlled at 3 to 5 mm. All bolt holes and support gaps should be sealed uniformly to improve the overall aesthetics and sealing performance.

[0017] The roof decorative grille curtain wall and construction method described in the present invention have the following beneficial effects: This roof decorative grille curtain wall can achieve better roof decoration effects and change the disadvantages of the single style of traditional roofs. Secondly, the use of steel structure and aluminum alloy grille can effectively extend the service life of the roof decoration layer and reduce the cost of later maintenance and replacement. This construction method can effectively realize the construction of decorative curtain wall structure, ensure the construction effect, and improve the construction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. The drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0019] Figure 1 This is a top view schematic diagram of a roof decorative grille curtain wall; Figure 2 This is a longitudinal side view of a roof decorative grille curtain wall; Figure 3 This is a horizontal side view of a roof decorative grille curtain wall; Figure 4 This is a longitudinal side view of a roof decorative grille curtain wall connection node; Figure 5 This is a horizontal side view of a roof decorative grille curtain wall connection node; Figure 6 Schematic diagram of the grille structure; In the figure, 1-concrete pier, 2-embedded plate, 3-stiffening rib, 4-steel column, 5-transverse steel beam, 6-longitudinal steel beam, 7-steel insert, 8-top grille, 9-side grille, 10-T-shaped support, 11-aluminum alloy insert, 12-tension bolt, 13-self-tapping screw, 14-strip hole, 15-aluminum alloy buckle cover, 16-anti-slip groove. DETAILED DESCRIPTION

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0022] Example 1 like Figure 1-6 As shown, this embodiment provides a roof decorative grille curtain wall, including a concrete pier 1, an embedded plate 2, a steel column 4, a stiffening rib 3, a transverse steel beam 5, a longitudinal steel beam 6, a T-shaped support 10, a top grille 8, a side grille 9, and a steel insert 7 and tension bolts 12 for connection.

[0023] Specifically, concrete pier 1 is located above the roof structure. Concrete pier 1 is cast from C25 fine aggregate concrete and measures 500mm x 500mm x 400mm, forming a solid rectangular structure that supports the upper steel columns. Its function is to withstand the vertical loads transmitted by the columns, ensuring the stability and firmness of the foundation.

[0024] Embedded plate 2 is located on top of concrete pier 1 and cast integrally with the concrete. Made of 10mm thick Q235 steel plate, the plate is hot-dip galvanized for corrosion resistance. Four Φ12 steel bars are welded to the bottom of the plate, bent 135° at both ends, with a height of 50mm and a spacing of 150mm. This structure strengthens the bond with the concrete and enhances overall anchoring performance.

[0025] Steel columns 4 are H-shaped steel members measuring H150×150×6×9, their bottoms fixed to the upper surface of the embedded plate 2 by full welds. Stiffening ribs 3 are installed between the steel columns 4 and the embedded plate 2. These ribs are trapezoidal steel plates, 8mm thick and made of Q235 steel. One rib is installed around each steel column to enhance the local strength of the connection between the column and the embedded plate.

[0026] Transverse steel beams 5 and longitudinal steel beams 6 are welded to the tops of steel columns 4, forming a stable steel structural framework system that provides stable support for the installation of the aluminum alloy grille. The steel beams are fully welded together, and steel inserts 7 can be installed at the joints for flexible connection, alleviating stress concentration caused by structural deformation.

[0027] The top grille 8 is made of aluminum alloy and is mounted on the steel beam via T-shaped brackets 10. The grille and T-shaped brackets 10 are connected by tension bolts 12. An aluminum alloy cover is installed at the bottom of the grille to cover the tension bolts. The cover surface is flush with the grille to enhance the overall appearance.

[0028] The side grilles 9 are installed at the edges of the grilles and together with the top grilles form a complete decorative curtain wall, thereby improving the integrity and decorative effect of the facade.

[0029] The structural form provided by this embodiment has a high degree of modularity, is convenient for factory processing and on-site assembly, and has the characteristics of high construction efficiency, strong structural stability, and high installation precision. Example 2

[0030] This embodiment is a further optimization based on the first embodiment, with the addition of a steel core 7 component to address the problem of structural deformation caused by thermal expansion and contraction.

[0031] Specifically, the steel insert 7 is arranged at the connection node between the transverse steel beam 5 and the longitudinal steel beam 6. It is made of circular or rectangular steel components. The insert structure is located at the butt joint of the two steel beams and is fixed to one of the beams by welding or bolts. A slide groove interface is set at the other end to form a flexible connection structure with one end fixed and the other end movable.

[0032] The function of this structure is that when the steel structure undergoes slight deformation due to temperature difference, material expansion or construction error, the steel insert 7 can provide a certain range of displacement buffering to avoid structural risks such as cracking of steel beams and falling off of welds due to overly rigid connections.

[0033] By providing the steel insert 7, the adaptability of the overall steel structure is enhanced, effectively ensuring the installation accuracy and overall linear shape of the top grille, avoiding installation quality problems such as grille interface misalignment and bolt deflection, and improving the engineering reliability of the system. Example 3

[0034] This embodiment is a further optimization based on the second embodiment, and introduces an aluminum alloy insert 11 structure to solve the problem of flexible connection of the grid.

[0035] Specifically, the aluminum alloy insert 11 is arranged in the inner cavity at the end of the top grille 8. It is a hollow rectangular tube with a length of not less than 80 mm and is made of aluminum alloy. The insert size is slightly smaller than the inner cavity of the grille, and forms a tight fit after insertion.

[0036] The inner cavity at the end of the top grid 8 is a cavity for installing the tension bolts 12, and an airtight cavity is formed by the aluminum alloy buckle cover 15. The aluminum alloy insert 11 is inserted into the cavity, and the size of the aluminum alloy insert 11 is slightly smaller than the cavity.

[0037] During installation, the ferrule is first inserted into the front grille, and then the rear grille is fitted over the other end of the ferrule, completing the connection through an interference fit or riveting. Limiting structures can be set at both ends of the ferrule to prevent it from falling out during installation.

[0038] One end of the aluminum alloy insert 11 is rigidly connected, and the other end is flexible connected.

[0039] The advantage of this structure is that it enhances the linear connection rigidity between the grilles, avoiding sagging, dislocation or deformation of the middle part of the grille due to excessive span. At the same time, since the core has a certain flexibility, it is also conducive to absorbing the slight deformation of the structural system caused by temperature or load fluctuations, thereby enhancing the integrity and stability of the system. Example 4

[0040] This embodiment is a further optimization based on the first embodiment, in which anti-skid grooves 16 are provided at the contact portion of the grille installation to enhance the friction performance between the grille and the T-shaped support 10 .

[0041] Specifically, longitudinal grooves are machined in the bottom contact area of the top grille 8, with a depth of 0.5mm to 1.0mm, a width of 2mm, and a stripe spacing of 3mm. The grooved area completely corresponds to the contact area of the top of the T-shaped support, forming a friction-enhancing area.

[0042] When the grille is inserted into the T-shaped support, it is tightened by the tension bolts 12 so that the groove area fits tightly against the support surface, thereby improving the anti-slip performance of the grille under load and preventing the grille from moving or dislocating due to structural vibration, thermal expansion or wind load.

[0043] The T-shaped support 10 adopts an adjustable elevation design, and a strip hole 14 is provided on the vertical mounting plate of the T-shaped support 10 , through which the installation position of the grille is adjusted.

[0044] This optimized structure improves the stability and reliability of the overall system without increasing the complexity of the connection by fine-tuning the contact surface, and has significant engineering application value. Example 5

[0045] This embodiment provides a construction method for a roof grille decoration structure, covering the entire process from in-depth design to final installation completion. It is suitable for the engineering implementation scenarios of large-scale roof grille decoration systems in modern buildings. It has the characteristics of clear operation process, high positioning accuracy, and excellent installation efficiency, ensuring the stability, aesthetics and maintenance convenience of the structure.

[0046] The construction method comprises the following steps: Step 1: Deepen design and BIM modeling Based on the spatial form, functional zoning and decorative effect requirements of the building roof, the roof steel structure grille curtain wall is designed in depth; using BIM modeling technology, three-dimensional layout and virtual collision analysis are carried out on components such as steel columns, horizontal steel beams, longitudinal steel beams, T-shaped supports, top grilles, side grilles, etc.; based on the BIM model, parameters such as steel column length, node location, concrete pier size, embedded plate layout, grille layout spacing, connection method, etc. are extracted and component processing drawings are output; a unified component numbering rule is formulated, such as G1-Gn for steel columns and C1-Cn for grilles, to ensure consistency and traceability of on-site installation.

[0047] Step 2: Material processing and pre-assembly inspection Entrust a metal processing factory with corresponding qualifications to carry out precision processing of steel structure components and aluminum alloy grilles; after the steel components are processed, they are sandblasted for rust removal, hot-dip galvanized or treated with anti-corrosion primer; the aluminum grilles use 6063-T5 or T6 profiles, with anodized or fluorocarbon sprayed surfaces, and the thickness should be controlled at more than 2.0mm; important connection parts (such as core fitting ports, embedded bolt holes, and T-support vertical plates) are required to undergo pre-assembly tests to check the fitting accuracy and installation tolerance to ensure smooth on-site installation.

[0048] Step 3: Roof layout and positioning measurement A total station is used to lay out longitudinal and transverse control axes on the roof layer of the building, forming a coordinate grid with equal intervals of 1.5m. Permanent control points are set up at each grid point, and the re-measurement error is controlled within ±1mm. According to the structural drawings and construction specifications, the concrete piers, steel columns, steel beam nodes, and grid layout lines are laid out and positioned in sequence to ensure installation accuracy.

[0049] Step 4: Construction of concrete piers and embedded slabs According to the results of the layout, the aluminum alloy formwork is installed and the release agent is applied. The four corners of the formwork are reinforced to ensure that it does not deform. The main reinforcement and distribution reinforcement are arranged according to the structural force, and the reinforcement spacing is 150mm and 200mm, which complies with the "Concrete Structure Construction Code"; the embedded plate is placed in the preset position in the formwork, and four Φ12 bent steel bars are provided at the bottom, with 135° hooks at both ends and a bending height of 50mm, which play an anchoring and pull-out resistance role; C25 fine stone concrete is poured, and a flat vibrator is used to vibrate and compact each layer, and the slump of the concrete is controlled at 160-180mm; after the concrete initially sets, it is watered and covered with plastic film. The curing period is not less than 7 days.

[0050] Step 5: Installation of steel columns and stiffeners After the concrete reaches the designed strength, the steel columns are hoisted to the position of the embedded plate and initially positioned and fixed by electric spot welding; the verticality of the columns is checked, and the error should be controlled within ±1mm / m; the connection between the steel columns and the embedded plate is fully welded by CO2 gas shielded welding, and the welds are full and free of pores; each steel column is equipped with four stiffening ribs with a thickness of 8mm and a material of Q235, which are set in the middle area of the four directions to increase the load-bearing rigidity of the column base and enhance the anti-lateral displacement performance.

[0051] Step 6: Installation of longitudinal and transverse steel beams Longitudinal and transverse steel beams are welded on top of the steel columns, and the two are perpendicular to each other to form a frame; steel inserts are set between the steel beams (depending on the span setting), and a flexible connection is formed through a sliding sleeve structure to alleviate the effects of thermal expansion and contraction; after all steel beams are connected, the node welds are subjected to ultrasonic or magnetic particle testing to ensure that there are no structural defects.

[0052] Step 7: T-type support installation Arrange T-shaped supports on the top of the steel beam according to the grid installation drawings; each T-shaped support is fixed to the top of the steel beam by 4 M6×25 self-tapping screws, and the screws are screwed in to a depth of not less than 25mm; the vertical strip holes on both sides of the support allow fine-tuning up and down, with an adjustment accuracy of ±1mm, meeting the requirements for eliminating construction deviations.

[0053] Step 8: Top grille installation The top grille is made of anodized aluminum with a hollow cross-section structure. One end is flexibly connected to the adjacent grille through an aluminum alloy insert with an insert depth of ≥80mm. A buckle cover is provided at the bottom of each grille. When installing, open the buckle cover, insert the bottom of the grille into the T-shaped support, and then use tension bolts to penetrate the holes to fix it. After tightening the bolts, install the buckle cover. The buckle cover is flush with the grille, hiding the fastening structure and improving the decorative integrity.

[0054] Step 9: Side grille installation The side grilles are arranged at the boundary of the grille system and in the same direction as the top grille. T-type supports of the same specifications and installation methods are used to ensure the integrated connection of the structural system. In combination with the requirements for node finishing, the edges of the grilles are limited and trimmed to avoid edge deformation or falling off.

[0055] Step 10: Fine-tuning and acceptance Use a 3m ruler and laser level to comprehensively re-measure the grille system, and adjust the elevation and joint gap section by section; the joint width between all grilles should be consistent, and the error should be controlled within ±0.5mm; strengthen the acceptance of nodes, grille bottoms, corners, and ends to ensure safety, beauty, and standardization.

[0056] Step 11: Gluing the edges Use neutral silicone weather-resistant sealant that matches the color of the aluminum at the grille joints; the thickness of the sealant should be controlled at 3 to 5 mm, and the sealant line should be continuous, full, smooth and free of bubbles; all exposed bolts, support gaps, and end seams must be uniformly sealed with sealant to ensure that the grille system has good sealing and visual integrity.

[0057] The above embodiments describe the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Without departing from the spirit and scope of the present invention, modifications and variations made by those skilled in the art without departing from the spirit and scope of the present invention should be within the scope of protection of the appended claims.

Claims

1. A roof decorative grille curtain wall, characterized in that: The invention comprises a concrete pier (1), an embedded plate (2), a steel column (4), a stiffening rib (3), a transverse steel beam (5), a longitudinal steel beam (6), a T-shaped support (10), a top grille (8), a side grille (9), a steel insert (7) and a tension bolt (12); wherein the concrete pier (1) is arranged on the upper part of the roof structure layer, is a rectangular solid structure, and is cast from C25 fine stone concrete; the embedded plate (2) is embedded in the top surface of the concrete pier (1) and is cast integrally with the concrete; the embedded plate (2) is a Q235 steel plate, and a bent steel bar is welded to the bottom; the lower end of the steel column (4) is fully welded to the embedded plate (2), and the steel bar is welded to the bottom of the steel column (4); the lower end of the steel column (4) is fully welded to the embedded plate (2), and the steel bar is welded to the embedded plate (2). A plurality of stiffening ribs (3) are arranged around the column, and the stiffening ribs are welded between the steel column and the embedded plate; the transverse steel beam (5) and the longitudinal steel beam (6) are arranged on the top of the steel column and connected by welding to form a frame structure; the top grid (8) and the side grid (9) are arranged above the steel beam and installed by T-shaped supports (10), and the T-shaped supports (10) have vertical strip holes for elevation adjustment; the top grids (8) are connected by tension bolts (12), and a buckle cover is provided at the bottom to hide the tension bolts; a steel insert (7) is provided between the transverse steel beam (5) and the longitudinal steel beam (6) to form a flexible connection structure.

2. A roof decorative grille curtain wall according to claim 1, characterized in that: The embedded plate (2) has a thickness of 10 mm, a surface treated with hot-dip galvanizing for corrosion protection, and four Φ12 bent steel bars are welded to the bottom with a spacing of 150 mm. The bending angles at both ends are 135° and the bending height is 50 mm.

3. The roof decorative grille curtain wall according to claim 1, characterized in that: The steel column (4) is an H-shaped steel member with a cross-sectional size of H150×150×6×9, and its bottom is fully welded to the embedded plate (2) by CO2 gas shielded welding.

4. The roof decorative grille curtain wall according to claim 1, characterized in that: The steel column (4) is provided with four stiffening ribs (3), the stiffening ribs being made of Q235 steel, having a thickness of 8 mm, and having a trapezoidal structure, and being respectively provided in the middle areas of the four side surfaces of the steel column.

5. The roof decorative grille curtain wall according to claim 1, characterized in that: The steel insert (7) is arranged at the connection node between the transverse steel beam (5) and the longitudinal steel beam (6); the steel insert is a structure with one end fixed and the other end sliding, and is used to relieve stress caused by thermal expansion and contraction.

6. The roof decorative grille curtain wall according to claim 1, characterized in that: The top grid (8) is made of an aluminum alloy profile, and an aluminum alloy insert (11) is provided inside the top grid. The aluminum alloy insert is a hollow rectangular tube with an insertion length of not less than 80 mm, and is used for flexible connection between grids.

7. The roof decorative grille curtain wall according to claim 6, characterized in that: The outer dimensions of the aluminum alloy insert (11) are slightly smaller than the inner cavity of the top grid (8), the insertion fit clearance is no more than 0.5 mm, and a limiting rib is provided to prevent it from falling out.

8. The roof decorative grille curtain wall according to claim 1, characterized in that: The bottom of the top grid (8) is provided with a longitudinal stripe-shaped anti-skid groove in the contact area with the T-shaped support (10), the groove depth is 0.5-1.0 mm, and the stripe spacing is 3 mm, for improving friction.

9. The roof decorative grille curtain wall according to claim 1, characterized in that: The T-shaped support (10) comprises a bottom plate and vertical support plates on both sides, the bottom plate is provided with self-tapping screw mounting holes, and the vertical support plates are provided with vertical strip holes for adjusting the installation elevation of the top grid.

10. A construction method for a roof decorative grille curtain wall, used for a roof decorative grille curtain wall according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Deepen the design. According to the building roof structure form and functional requirements, use BIM modeling technology to simulate the layout of the concrete pier (1), steel column (4), transverse steel beam (5), longitudinal steel beam (6), T-shaped support (10), top grille (8) and side grille (9), and complete the component numbering, processing parameter extraction and layout diagram output; Step 2: Material processing and component prefabrication: Steel components and aluminum alloy grilles are processed according to the detailed design drawings, including steel columns (4), stiffening ribs (3), steel inserts (7), embedded plates (2), T-shaped supports (10) and aluminum alloy inserts (11). The surface of the components is treated with anti-corrosion treatment and numbered; Step 3: Measure and lay out the lines. Use a total station and a laser level to lay out the vertical and horizontal control lines on the roof structure layer, establish a construction positioning grid, and determine the specific positioning points of the concrete pier (1), steel column and steel beam nodes, with a control accuracy within the range of ±1mm; Step 4: Construction of concrete piers and embedded plates: Set up formwork at the layout location, install bent steel bars and embedded plates (2), pour C25 fine stone concrete to form concrete piers (1), set 4 Φ12 steel bars at the bottom of the embedded plates for anchoring, and maintain for at least 7 days after pouring; Step 5: Install the steel columns and stiffening ribs. When the strength of the concrete pier (1) reaches the design requirements, the steel columns (4) are positioned and installed on the embedded plate (2) by hoisting, and connected to the embedded plate by full welding. Stiffening ribs (3) are set on the four sides of the steel columns (4), one on each side, and are welded and fixed to the columns and embedded plate. Step 6: Install the steel beams and steel inserts. Weld the longitudinal steel beams (6) and the transverse steel beams (5) to the top of the steel columns (4) according to the design sequence. Set steel inserts (7) between the steel beams for flexible connection to improve the structural deformation adaptability. Step 7: Install the T-shaped support. Install the T-shaped support (10) on the top of the steel beam. Each support is fixed by a self-tapping screw. The vertical support plate of the T-shaped support is provided with a vertical strip hole to achieve fine adjustment of the top grid elevation. The adjustment accuracy is ±1mm. Step eight, top grille installation, insert the top grilles (8) into the T-shaped supports (10) one by one, and connect the grilles flexibly through aluminum alloy inserts (11), the length of the inserts being not less than 80 mm, and fix the joints with tension bolts (12) and install aluminum alloy buckle covers to cover them; Step nine, side grille installation, install the side grille (9) around the frame, fix it with the same T-shaped support, and form a complete decorative curtain wall system with the top grille; Step 10: Elevation adjustment and accuracy review: Use a ruler and electronic level to re-measure the levelness and gap consistency of the entire grille system. Adjust the height of the top grille with the T-shaped support to ensure that the grille joints are consistent and the interfaces are neat. Step 11: Sealing and gluing. Apply weather-resistant sealant to the grille joints and edges. The thickness of the sealant should be controlled at 3 to 5 mm. All bolt holes and support gaps should be sealed uniformly to improve the overall aesthetics and sealing performance.

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