Stand film structure and mounting method thereof

Abstract

The invention discloses a stand membrane structure and an installation method thereof, and the stand membrane structure comprises a supporting steel frame of a frame structure, a membrane material covering the supporting steel frame, a tensioning positioning point marked on the edge of the membrane material, a tensioning assembly connected to the tensioning positioning point, and an edge fixing assembly used for fixing the membrane material on the supporting steel frame. The tensioning assembly comprises a hydraulic tensioning device, a tension sensor, a hydraulic system and an intelligent control host. The device is reliable in structure and convenient to mount and operate, mounting errors are controlled through laser scanning and re-checking of the size of a bearing steel structure, membrane material block pre-cutting and tensioning positioning point design, membrane surface wrinkling or stress concentration is effectively avoided, and the service life of a membrane material is prolonged; and the tension assembly is monitored in real time through a tension sensor and dynamically adjusted through an intelligent control host, so that the tension uniformity of the film surface is effectively improved, the structural stability is ensured, and meanwhile, the film material damage caused by excessive tension is avoided.

Description

Technical Field

[0001] This invention relates to the field of architectural engineering technology, specifically to a grandstand membrane structure and its installation method. Background Technology

[0002] Membrane structures have been widely used in the construction industry, especially in stadiums, convention centers, and airports. However, in practical applications, existing membrane structures still have several technical defects during installation. The following are some of the problems encountered during the installation of existing grandstand membrane structures: (1) Insufficient control of membrane tension: Traditional methods rely on manual adjustment of membrane tension when tensioning membrane materials, which often results in uneven tension or excessive stretching, which can lead to membrane deformation or tearing, affecting structural stability and aesthetics.

[0003] (2) Low installation accuracy: Poor matching between membrane material cutting and steel structure leads to wrinkles or local stress concentration after installation, shortening service life and reducing the structure's wind and snow resistance.

[0004] (3) Low construction efficiency: The installation of existing membrane structures mostly relies on manual adjustment of the membrane position and tension, which is time-consuming and labor-intensive, and is subject to weather conditions (such as construction must be suspended when the wind force is greater than level three).

[0005] (4) Single fixing method: The edge of the membrane material is not firmly fixed and is prone to displacement or falling off due to wind load or rainwater accumulation. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention provides a grandstand membrane structure and its installation method.

[0007] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a grandstand membrane structure, comprising a supporting steel frame in the form of a frame, a membrane material covering the supporting steel frame, tensioning positioning points marked on the edge of the membrane material, tensioning components connected to the tensioning positioning points, and an edge fixing component for fixing the membrane material to the supporting steel frame; The tensioning assembly includes a hydraulic tensioner, a tension sensor, a hydraulic system, and an intelligent control unit. The output end of the hydraulic tensioner is detachably connected to the tensioning positioning point of the membrane material. The tension sensor is attached to the surface of the membrane material and adjacent to the tensioning positioning point. The tension sensor is electrically connected to the intelligent control unit via a signal line. The intelligent control unit is electrically connected to the hydraulic system via a control line. The hydraulic system is connected to the hydraulic tensioner via a hydraulic pipeline.

[0008] Furthermore, the edge fixing assembly includes a U-shaped clamp and a quick-lock. The U-shaped clamp holds the edge of the membrane material, and one end of the quick-lock is fixedly connected to the edge of the supporting steel frame by a bolt. The other end of the quick-lock engages with the U-shaped clamp to fix the edge of the membrane material to the supporting steel frame.

[0009] Furthermore, the supporting steel frame is equipped with embedded parts, and the embedded parts are laser-positioned and calibrated to correspond to the installation position of the membrane material. The number of embedded parts is adapted to the number of frame nodes of the supporting steel frame.

[0010] Furthermore, the hydraulic system of the tensioning component includes a hydraulic pump and a hydraulic valve group. The hydraulic pump is connected to the hydraulic valve group through a hydraulic pipeline, and the hydraulic valve group is connected to the hydraulic tensioner through a hydraulic pipeline. The intelligent control host is electrically connected to the hydraulic pump and the hydraulic valve group respectively through control lines to control the output and flow direction of the hydraulic oil.

[0011] Furthermore, the membrane material includes the membrane body and membrane cables integrated at the edge of the membrane body.

[0012] The present invention also provides a method for installing a grandstand membrane structure, comprising the following steps: S1: Construction preparation: Check the integrity of the membrane material, the welding quality of the supporting steel frame and the solidification state of the embedded parts. At the same time, check the connection reliability of the hydraulic tensioner, tension sensor, hydraulic system and intelligent control host of the tensioning assembly, and confirm that the supporting construction accessories are intact. S2: Support steel frame verification and membrane material pre-expansion: The frame dimensions of the support steel frame are scanned using laser scanning equipment. The scanned data is compared with the pre-cut dimensions of the membrane material and the deviation is corrected. Then, a protective layer is laid on the ground, and the membrane material is unfolded on the protective layer so that the tensioning positioning point of the membrane material faces upward and corresponds to the hydraulic tensioner of the tensioning component. S3: Intelligent phased tensioning: The membrane material is hoisted to the top of the supporting steel frame by a crane, so that the edge of the membrane material is aligned with the edge of the supporting steel frame. The output end of the hydraulic tensioner is connected to the tensioning positioning point of the membrane material. The intelligent control host is started to control the hydraulic system to drive the hydraulic tensioner to apply the design tension and monitor the tension data in real time to ensure that the tension of each area of ​​the membrane surface is uniform. S4: Edge Fixing and Acceptance: Clamp the U-shaped clamp to the edge of the membrane material, fix one end of the quick-lock to the edge of the supporting steel frame with a 2M20 nut, and engage the other end with the U-shaped clamp and fine-tune it until there is no looseness at the edge of the membrane material. Clean the membrane surface with a neutral detergent, check the connection status of the membrane material with the supporting steel frame, tensioning components, and edge fixing components, and complete the acceptance after confirming that there are no wrinkles on the membrane surface.

[0013] Furthermore, when applying tension in step S3: in the first stage, the hydraulic system is controlled to drive the hydraulic tensioner to apply 30% of the design tension, and the flatness of the membrane surface is adjusted by the feedback data from the tension sensor; in the second stage, the hydraulic tensioner is controlled to gradually increase to 100% of the design tension.

[0014] Furthermore, the pre-expansion of the membrane material in step S2 includes the following steps: S2.1: Temporary placement of membrane material: The unopened packaging bag of membrane material shall be accurately hoisted and placed in the designated position on the supporting steel frame according to the front / back, inside / outside, left / right orientation and installation direction marked on the packaging. S2.2: Membrane material unfolding and pre-fixing: Before installation, open the membrane material packaging bag, first align the center point of the membrane material with the corresponding reference point of the supporting steel frame, then unfold the membrane material around and align the membrane material with the design position of the supporting steel frame, and use a tensioner to temporarily tighten and position the membrane material from the center point to the surrounding area to apply pre-stress and achieve membrane material pre-fixing. S2.3: Cap fixing and lifting: Lay a mat on the ground, unfold the membrane material on the mat and fix it simultaneously with the two corresponding caps, lift the membrane material with the caps fixed to the top of the central column by a double set of winches or cranes, loosen the structural cable fixing the cap to the maximum stroke and fix the cap to the structural cable, and then complete the connection between the two caps. S2.4: Assemble the modular blocks and close the whole structure. Repeat step S2.3 to complete the fixing, lifting and connection of the remaining caps and membrane materials. Take two corresponding caps as a modular block. After all modular blocks are completed, first fix the side cables to the membrane material on the ground or at a low position and initially tension them into place. Then, adjust the adjustment range of the side cable end adjustment brackets to the maximum. Then, temporarily attach the membrane corners to the corresponding nodes of the supporting steel frame and close the adjacent modular blocks. During the closing process, use ropes to protect the membrane material from the wind.

[0015] The present invention has the following beneficial effects: The grandstand membrane structure and its installation method provided by the present invention, (1) Its structure is reliable and its installation and operation are convenient. By using laser scanning to verify the dimensions of the supporting steel structure, the pre-cutting of the membrane material into blocks and the design of the tensioning positioning points, the installation error can be controlled, effectively avoiding membrane wrinkles or stress concentration, and extending the service life of the membrane material. (2) The tensioning component is monitored in real time by a tension sensor and dynamically adjusted by an intelligent control host, which effectively improves the uniformity of membrane tension, ensures structural stability, and avoids membrane material damage caused by excessive tension. (3) Mechanized intelligent tensioning reduces manual intervention, effectively shortens the construction period, and the intelligent system is more adaptable to the construction environment, reducing the impact of weather conditions on construction.

[0016] (4) The edge fixing components have a dual fixing structure of “U-shaped clamp + quick lock”, which, together with the edge reinforcing cable of the membrane material, improves the wind resistance of the membrane structure, effectively prevents the membrane material from shifting or falling off, and improves the safety of long-term use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram illustrating the working principle of the tensioning component in this invention; Figure 3 This is a schematic diagram of the connection at the end corner of the membrane material in this invention; Figure 4 This is a schematic diagram of the membrane material connection in this invention; Figures 1 to 4 The reference numerals in the attached figures are respectively: 1-supporting steel frame, 2-membrane material, 3-tensioning assembly, 4-edge fixing assembly, 7-tension sensor, 8-hydraulic tensioner, 9-hydraulic system, 10-intelligent control host, 12-U-shaped clamp, 15-quick lock, 16-membrane cable, 17-membrane body. Detailed Implementation

[0018] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0019] like Figures 1 to 4 As shown, a grandstand membrane structure includes a supporting steel frame 1 in the form of a frame, a membrane material 2 covering the supporting steel frame 1, tensioning positioning points marked on the edge of the membrane material 2, tensioning components 3 connected to the tensioning positioning points, and an edge fixing component 4 for fixing the membrane material 2 to the supporting steel frame 1.

[0020] Among them, the supporting steel frame 1 adopts a high-precision welded frame, which serves as the load-bearing base of the entire membrane structure. The frame structure provides stable rigid support, bears the self-weight of the membrane material 2, tensile stress and external loads, and avoids deformation of the overall structure due to insufficient support rigidity.

[0021] The supporting steel frame 1 is equipped with embedded parts, which are laser-aligned to correspond to the installation positions of the membrane material 2. The number of embedded parts matches the number of frame nodes of the supporting steel frame 1. Precisely aligned embedded parts ensure that the edge fixing components 4 act "point-to-point" when fixing the membrane material 2, preventing localized pulling or loosening of the membrane material 2 due to fixing point misalignment. This prevents wrinkles and localized stress concentration on the membrane surface after installation, extending the service life of the membrane material 2. The membrane material 2 serves as the architectural carrier for the grandstand's sunshade and rain protection functions, covering the supporting steel frame 1 to form a closed or semi-closed protective space, meeting the grandstand's basic environmental protection requirements. The membrane material 2 is made of high-strength PVDF coated membrane material 2, which is a pre-cut unit structure. The membrane material 2 includes a membrane body 17 and membrane cables 16 integrated on the edge of the membrane body 17. Each membrane body 17 unit is marked with tensioning positioning points.

[0022] The tensioning assembly 3 includes a hydraulic tensioner 8, a tension sensor 7, a hydraulic system 9, and an intelligent control unit 10. The output end of the hydraulic tensioner 8 is detachably connected to the tensioning positioning point of the membrane material 2. The tension sensor 7 is fitted onto the surface of the membrane material 2 and adjacent to the tensioning positioning point. The tension sensor 7 is electrically connected to the intelligent control unit 10 via a signal line, and the intelligent control unit 10 is electrically connected to the hydraulic system 9 via a control line. The hydraulic system 9 is connected to the hydraulic tensioner 8 via a hydraulic pipeline. Through the detachable connection between the output end and the tensioning positioning point of the membrane material 2, a preset tension is directly applied to the membrane material 2. The tension sensor 7 can collect the tension data of the membrane material 2 near the corresponding tensioning point in real time, ensuring that the monitoring data is directly correlated with the actual tensioning effect at that positioning point, avoiding data distortion caused by the disconnect between the monitoring point and the stress point, and providing a reliable basis for subsequent control. The hydraulic system 9 converts the control commands of the intelligent control host 10 into hydraulic power (such as hydraulic oil pressure and flow regulation) to drive the output end of the hydraulic tensioner 8 to adjust the tension. The intelligent control host 10 receives real-time data from the tension sensor 7 through the signal line, compares it with the preset design tension value, and determines whether the tension needs to be adjusted.

[0023] During operation, the tension sensor 7 is attached to the surface of the membrane material 2 and adjacent to the tensioning positioning point. When the hydraulic tensioner 8 applies tension to the membrane material 2, it collects the tension data of the membrane material 2 near the positioning point in real time and transmits the data to the intelligent control host 10 through the signal line. After receiving the tension data, the intelligent control host 10 compares it with the preset design tension parameters. If the real-time tension is lower than the design value, the host determines that the tension needs to be increased; if the real-time tension is higher than the design value, the host determines that the tension needs to be decreased; if the deviation between the real-time tension and the design value is within the allowable range, the host determines that no adjustment is needed. Based on the judgment result, the intelligent control host 10 sends a control command to the hydraulic system 9 through the control line. After receiving the command, the hydraulic system 9 adjusts the hydraulic power supplied to the hydraulic tensioner 8 through the hydraulic pipeline, thereby driving the output end of the hydraulic tensioner 8 to increase or decrease the tension on the tensioning positioning point of the membrane material 2. After the hydraulic tensioner 8 adjusts the tension, the tension sensor 7 continuously collects new tension data and transmits it to the intelligent control host 10 again. The host repeats the analysis, judgment and power control steps until the tension of the membrane material 2 reaches the design value and stabilizes. The closed-loop control ends, and the precise tensioning of the tensioning positioning point is completed.

[0024] Specifically, the hydraulic system 9 of the tensioning component 3 includes a hydraulic pump and a hydraulic valve group. The hydraulic pump is connected to the hydraulic valve group through hydraulic pipelines, and the hydraulic valve group is connected to the hydraulic tensioner 8 through hydraulic pipelines. The intelligent control host 10 is electrically connected to the hydraulic pump and the hydraulic valve group through control lines to control the output and flow direction of the hydraulic oil. As the core power unit of the hydraulic system 9, the hydraulic pump converts mechanical energy into hydraulic energy through mechanical motion, continuously outputting hydraulic oil with a certain pressure and flow rate to provide stable force for the hydraulic tensioner 8. The hydraulic valve group precisely controls the flow direction of the hydraulic oil by switching the on and off of the internal valve body, adapting to the design of the membrane material 2 with segmented pre-cutting and multiple tensioning positioning points, avoiding disordered distribution of hydraulic oil that leads to some tensioners having no power or excessive power. By fine-tuning the valve opening, the flow rate of hydraulic oil delivered to each hydraulic tensioner 8 is precisely controlled. The flow rate directly determines the force applied by the tensioner, thereby achieving precise tension matching at different tensioning positioning points.

[0025] In this embodiment, the edge fixing component 4 includes a U-shaped clamp 12 and a quick-locking buckle 15. The U-shaped clamp 12 clamps the edge of the membrane material 2. The U-shaped clamp 12 has a U-shaped structure and can wrap around a local area of ​​the edge of the membrane material 2, increasing the contact area with the membrane material 2 and avoiding tearing of the edge of the membrane material 2 due to excessive local pressure caused by traditional single-point bolt fixing. At the same time, the clamping force can be evenly distributed to the edge of the membrane material 2, preventing the membrane material 2 from loosening or deforming due to local force concentration. The opening size of the U-shaped clamp is adapted to the thickness of the membrane material 2. After clamping, it can form a limiting constraint on the edge of the membrane material 2, preventing the membrane material 2 from sliding laterally along the edge when tensioned or loaded, and providing a stable positioning reference for subsequent snap-fit ​​with the quick-locking buckle 15.

[0026] One end of the quick-lock 15 is fixedly connected to the edge of the supporting steel frame 1 by bolts. The bolt connection provides high-strength rigid fixation, ensuring that the connection between the quick-lock 15 and the supporting steel frame 1 will not loosen due to external forces such as wind load or membrane tension. The other end of the quick-lock 15 engages with the U-shaped clamp 12 to fix the edge of the membrane 2 to the supporting steel frame 1. The clamping structure allows for quick docking, fine-tuning, and locking. During installation, there is no need to repeatedly align the bolt holes. After clamping, the position of the clamp can be slightly adjusted (such as fine-tuning the tightness of the membrane 2 edge) to ensure that the membrane 2 is fixed without loosening. During later maintenance, the clamping structure can also be quickly disassembled to adjust the membrane 2, avoiding the cumbersome disassembly and modification problems of traditional fixing methods.

[0027] The present invention also provides a method for installing a grandstand membrane structure, characterized by comprising the following steps: S1: Construction preparation: Check the integrity of membrane material 2, the welding quality of supporting steel frame 1 and the solidification state of embedded parts. At the same time, check the connection reliability of hydraulic tensioner 8, tension sensor 7, hydraulic system 9 and intelligent control host 10 of tensioning assembly, and confirm that the supporting construction accessories are intact. S2: Verification of support steel frame 1 and pre-expansion of membrane material 2: The frame dimensions of support steel frame 1 are scanned using laser scanning equipment. The scanned data is compared with the pre-cut dimensions of membrane material 2 and the deviation is corrected. Then, a protective layer is laid on the ground, and membrane material 2 is unfolded on the protective layer so that the tensioning positioning point of membrane material 2 faces upward and corresponds to the hydraulic tensioner 8 of the tensioning component. In addition, the pre-expansion of membrane material 2 in step S2 includes the following steps: S2.1: Temporary placement of membrane material 2: The unopened packaging bag of membrane material 2 is accurately hoisted and placed in the designated position of the supporting steel frame 1 according to the front / back, inside / outside, left / right orientation and installation unfolding direction marked on the packaging. S2.2: Membrane material 2 unfolding and pre-fixing: Before installation, open the packaging bag of membrane material 2, first align the center point of membrane material 2 with the corresponding reference point of the supporting steel frame 1, then unfold membrane material 2 around and align membrane material 2 with the design position of supporting steel frame 1, and use a tensioner to temporarily tighten and position membrane material 2 from the center point to the surrounding area to apply pre-stress and achieve pre-fixing of membrane material 2. S2.3: Cap fixing and lifting: Lay a mat on the ground, unfold the membrane material 2 on the mat and fix it synchronously with the two corresponding caps, lift the membrane material 2 with the caps fixed to the top of the central column by a double set of winches or cranes, loosen the structural cable fixing the cap to the maximum stroke and fix the cap to the structural cable, and then complete the connection between the two caps. S2.4: Assemble the modular blocks and close the whole structure. Repeat step S2.3 to complete the fixing, lifting and connection of the remaining caps and membrane material 2. Take two corresponding caps as a modular block. After all modular blocks are completed, first fix the side cables to the membrane material 2 on the ground or at a low position and initially tension them into place. Then, adjust the adjustment range of the side cable end adjustment brackets to the maximum. Then, temporarily attach the membrane corners to the corresponding nodes of the supporting steel frame 1 and close the adjacent modular blocks. During the closing process, use ropes to protect the membrane material 2 from the wind.

[0028] S3: Intelligent phased tensioning: The membrane material 2 is hoisted to the top of the supporting steel frame 1 by a crane, so that the edge of the membrane material 2 is aligned with the edge of the supporting steel frame 1. The output end of the hydraulic tensioner 8 is connected to the tensioning positioning point of the membrane material 2. The intelligent control host 10 is started to control the hydraulic system 9 to drive the hydraulic tensioner 8 to apply the design tension, and the tension data is monitored in real time to ensure that the tension of each area of ​​the membrane surface is uniform. In addition, when tension is applied: in the first stage, the hydraulic system 9 drives the hydraulic tensioner 8 to apply 30% of the design tension, and the flatness of the membrane surface is adjusted by the feedback data of the tension sensor 7; in the second stage, the hydraulic tensioner 8 is gradually increased to 100% of the design tension.

[0029] S4: Edge Fixing and Acceptance: Clamp the U-shaped clamp 12 to the edge of the membrane material 2, so that one end of the quick lock 15 is fixed to the edge of the supporting steel frame 1 through the 2M20 specification nut, and the other end is engaged with the U-shaped clamp 12 and finely adjusted until there is no looseness at the edge of the membrane material 2. Clean the membrane surface with a neutral cleaning agent, check the connection status of the membrane material 2 with the supporting steel frame 1, tensioning component, and edge fixing component 4, and complete the acceptance after confirming that there are no wrinkles on the membrane surface.

[0030] Additionally, it should be noted that components not described in detail in this article are existing technologies.

[0031] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A bleacher membrane structure, characterized by, The supporting steel frame (1) in a frame structure, the membrane material (2) covering the supporting steel frame (1), the tension positioning points marked on the edges of the membrane material (2), the tension assembly (3) connected at the tension positioning points, and the edge fixing assembly (4) for fixing the membrane material (2) to the supporting steel frame (1); The tension assembly (3) comprises a tension sensor (7), a hydraulic tensioner (8), a hydraulic system (9), and a smart control host (10), the output end of the hydraulic tensioner (8) is detachably connected with the tension positioning point of the membrane material (2), the tension sensor (7) is attached to the surface of the membrane material (2) and adjacent to the tension positioning point, the tension sensor (7) is electrically connected with the smart control host (10) through a signal line, the smart control host (10) is electrically connected with the hydraulic system (9) through a control line, and the hydraulic system (9) is in communication with the hydraulic tensioner (8) through a hydraulic pipeline.

2. The bleacher membrane structure of claim 1, wherein, The edge fixing assembly (4) comprises a U-shaped clamp (12) and a quick lock (15), the U-shaped clamp (12) is clamped on the edge of the membrane material (2), one end of the quick lock (15) is fixedly connected with the edge part of the supporting steel frame (1) through a bolt, and the other end of the quick lock (15) is in clamping engagement with the U-shaped clamp (12) to fix the edge of the membrane material (2) on the supporting steel frame (1).

3. The bleacher membrane structure of claim 1, wherein, The supporting steel frame (1) is provided with embedded parts, and the embedded parts are calibrated by laser positioning to correspond to the installation position of the membrane material (2), and the number of the embedded parts is adapted to the number of the frame nodes of the supporting steel frame (1).

4. The bleacher membrane structure of any one of claims 1, wherein, The hydraulic system (9) of the tension assembly (3) comprises a hydraulic pump and a hydraulic valve group, the hydraulic pump is in communication with the hydraulic valve group through a hydraulic pipeline, the hydraulic valve group is in communication with the hydraulic tensioner (8) through a hydraulic pipeline, and the smart control host (10) is electrically connected with the hydraulic pump and the hydraulic valve group respectively through a control line to control the output amount and flow direction of the hydraulic oil.

5. The bleacher membrane structure of claim 1, wherein, The membrane material (2) comprises a membrane body (17) and a membrane cable (16) integrated on the edge of the membrane body (17).

6. A method of installing a bleacher membrane structure for installing the bleacher membrane structure according to any one of claims 1 to 5, characterized by, The method comprises the following steps: S1: construction preparation: check the integrity of the membrane material (2), the welding quality of the supporting steel frame (1), and the solidification state of the embedded parts, check the connection reliability of the hydraulic tensioner (8), the tension sensor (7), the hydraulic system (9), and the smart control host (10) of the tension assembly, and confirm that the matched construction accessories are intact; S2: supporting steel frame (1) review and membrane material (2) pre-exhibition: scan the frame size of the supporting steel frame (1) by using a laser scanning device, compare and correct the deviation between the scanning data and the pre-cut size of the membrane material (2), then lay a protective layer on the ground, and unfold the membrane material (2) on the protective layer, so that the tension positioning points of the membrane material (2) face upwards and correspond to the hydraulic tensioner (8) of the tension assembly; S3: Intelligent staged tensioning: hoist the membrane material (2) to the upper part of the supporting steel frame (1) by crane, align the edge of the membrane material (2) with the edge part of the supporting steel frame (1), connect the output end of the hydraulic tensioner (8) with the tensioning positioning point of the membrane material (2), start the intelligent control host (10) to control the hydraulic system (9) to drive the hydraulic tensioner (8) to apply the designed tension, and monitor the tension data in real time to ensure that the tension of each area of the membrane surface is uniform; S4: Edge fixation and acceptance: clamp the U-shaped clamp (12) on the edge of the membrane material (2), fix one end of the quick lock (15) to the edge part of the supporting steel frame (1) through a 2M20 specification nut, and the other end is clamped with the U-shaped clamp (12) and is adjusted to the edge of the membrane material (2) without slack, clean the membrane surface with a neutral cleaning agent, check the connection state of the membrane material (2) and the supporting steel frame (1), tensioning assembly, edge fixing assembly (4), and complete acceptance after confirming that the membrane surface is wrinkle-free.

7. A method of installing a bleacher membrane structure according to claim 6, wherein When the tension is applied in step S3: In the first stage, control the hydraulic system (9) to drive the hydraulic tensioner (8) to apply 30% of the designed tension, and adjust the flatness of the membrane surface through the feedback data of the tension sensor (7); In the second stage, control the hydraulic tensioner (8) to gradually increase to 100% of the designed tension.

8. The method of installing a bleacher membrane structure of claim 6, wherein, In step S2, the pre-expansion of the membrane material (2) includes the following steps: S2.1: Temporary placement of the membrane material (2): Place the membrane material (2) without opening the packaging bag according to the front / back, inside / outside, left / right orientation and the installation and expansion direction marked on the packaging, accurately hoist and place it to the designated position of the supporting steel frame (1) temporarily; S2.2: Membrane material (2) expansion and pre-fixing: Open the packaging bag of the membrane material (2) before installation, align the center point of the membrane material (2) with the corresponding reference point of the supporting steel frame (1), then expand the membrane material (2) around and align it with the designed position of the supporting steel frame (1), temporarily and locally tighten the membrane material (2) from the center point to the surrounding to apply pre-prestress, and realize pre-fixing of the membrane material (2); S2.3: Cap top fixation and lifting: Lay a mat on the ground, fix the membrane material (2) on the mat after expansion, and fix the corresponding two cap tops simultaneously, lift the membrane material (2) with the fixed cap tops to the top of the middle column by double winches or cranes, loosen the structure cable fixed with the cap top to the maximum stroke, and fix the cap top on the structure cable, then complete the connection between the two cap tops; S2.4: Assembling blocks and overall folding, repeat step S2.3 to complete the fixing, lifting and connection of the remaining cap tops and membrane material (2), take the corresponding two cap tops as a block, after all the blocks are completed, first fix the edge cable with the membrane material (2) on the ground or low place and initially tension it to the position, adjust the amount of the adjusting nut to the maximum, then temporarily hang the membrane corner on the corresponding node of the supporting steel frame (1), fold the adjacent blocks, and protect the membrane material (2) from wind with a rope during the folding process.

Images