Installation technology for newly-built canopy of high-speed rail platform in operation line skylight point

Abstract

The invention belongs to the technical field of high-speed rail platform newly-built canopy installation, and discloses an installation technology for a high-speed rail platform newly-built canopy in an operation line skylight point. The newly-built canopy is a lower hanging type and bilateral symmetry type canopy, and the newly-built canopy is installed on the canopy frame after the old canopy is removed; the installation process comprises the following steps: preparation work before installation; the canopy unit modules are hoisted to the corresponding positions of the canopy frame and connected to the canopy frame; the used auxiliary components are dismounted; and the adjacent canopy unit modules on the same side are connected. According to the method, assembling and quality detection of the canopy unit modules are completed on the ground in advance, potential quality problems are found out in advance and solved, the construction time in a skylight point can be remarkably shortened, and the construction efficiency is improved; and the normal operation of the high-speed rail vehicle is not influenced when construction is carried out at the skylight point.

Description

Technical Field

[0001] The present invention belongs to the technical field of installation of newly built canopies on high-speed railway platforms, and specifically relates to an installation process for newly built canopies on high-speed railway platforms within skylight points on operating lines. Background Art

[0002] With the rapid development of China's economy and the accelerating pace of urbanization, high-speed rail (HSR), a vital component of the modern transportation system, has witnessed not only technological advancements but also profound changes in people's travel patterns and pace of life. Since the beginning of this century, China's HSR, with its astonishing construction speed and exceptional operational quality, has led the global trend in HSR development, building a comprehensive, efficient, and convenient high-speed rail network. After more than a decade of vigorous development, HSR has become a vital link connecting China's major cities and promoting regional economic integration, significantly enhancing the country's comprehensive transportation capabilities and the quality of life of its people.

[0003] The expansion and renovation of high-speed rail stations involves installing new canopies where the old ones have been removed. However, currently, the available technical means for installing new canopies are very limited. Especially for the expansion and renovation of operating high-speed rail stations, there are currently few references for how to install new canopies where the old ones have been removed while ensuring normal operation of the station.

[0004] In view of this, this application is hereby filed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiency of the existing technology that it is impossible to install a new canopy on the canopy frame where the old canopy has been dismantled while ensuring the normal operation of the high-speed rail. The purpose is to provide an installation process for a new canopy on a high-speed rail platform within the skylight point of the operating line with a fast construction speed and higher construction efficiency without affecting the normal operation of the high-speed rail vehicles.

[0006] To solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: a process for installing a new canopy on a high-speed railway platform within a skylight point of an operating line, wherein the new canopy is a bottom-hung, bilaterally symmetrical canopy, and the new canopy is installed on a canopy frame after the old canopy has been removed. The canopy frame after the old canopy has been removed comprises: a triangular truss beam, a composite steel column vertically connected to the triangular truss beam, a steel cable connected to one end of the composite steel column away from the ground and to one end of the triangular truss beam away from the composite steel column, and a bottom-hung purlin bracket connected to the triangular truss beam;

[0007] The installation process includes the steps of:

[0008] S1. Preparation before installation;

[0009] S2. Symmetrical construction: hoist the canopy unit module to the corresponding position of the canopy frame and connect it to the canopy frame;

[0010] S3. Remove the auxiliary components after use;

[0011] S4. Connect the adjacent canopy unit modules on the same side.

[0012] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0013] In the present invention, by completing the pre-assembly and quality inspection of the canopy unit modules on the ground in advance, potential quality problems can be identified and resolved in advance, which can significantly shorten the construction time within the skylight point and improve construction efficiency;

[0014] Construction at the skylight point will not affect the normal operation of high-speed rail vehicles;

[0015] Symmetrical construction ensures that the external forces such as gravity and lifting tension on both sides of the structure are evenly distributed on the canopy frame, effectively preventing structural deformation or damage caused by uneven force, effectively ensuring the stability of the existing canopy frame structure, and providing reliable protection for the safe operation of high-speed railways. At the same time, during the symmetrical construction process, the installation conditions on both sides can be compared with each other, which helps to improve installation accuracy, effectively reduce the accumulation of installation errors, and thus ensure that the entire canopy is installed to a high standard.

[0016] Timely removal of used auxiliary components not only creates a good working space for subsequent sealing, decoration and other finishing work of the awning, but also allows them to be reused for the installation of subsequent awning unit modules.

[0017] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive effort. In the accompanying drawings:

[0019] Figure 1 This is a flowchart of the steps of the installation process of a new canopy for a high-speed railway platform within a skylight point on an operating line according to an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall structure of the canopy after the new canopy is installed in an embodiment of the present invention;

[0021] Figure 3 Schematic diagram of the position arrangement of the canopy unit modules in an embodiment of the present invention;

[0022] Figure 4 A schematic diagram of a state in which fine adjustment is performed using an L-shaped plate in an embodiment of the present invention;

[0023] Figure 5 This is a structural diagram of a clamp in an embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the structural state of the clamp being connected in an embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the state of the code plate connection in an embodiment of the present invention;

[0026] Figure 8 This is a state diagram of using a crawler crane to hoist the canopy unit module in an embodiment of the present invention;

[0027] Figure 9 This is a state diagram of the canopy unit modules being assembled on the ground using a truck crane in an embodiment of the present invention;

[0028] Figure 10 This is a diagram showing the arrangement of the lifting points of a standard module in an embodiment of the present invention;

[0029] Figure 11 This is a diagram showing the arrangement of the hanging points of a non-standard module in an embodiment of the present invention.

[0030] Description of the main components in the figure:

[0031] 1. Triangular truss beam; 2. Combined steel column; 3. Steel cable; 4. L-shaped plate; 5. Hoop; 6. Stacking plate.

[0032] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0034] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0035] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0036] This embodiment combines the actual working conditions of the new canopy at Yizhuang Station of the Beijing-Tianjin-Hebei intercity railway to develop an installation process for the new canopy at the high-speed railway platform within the skylight points of the operating line, which can efficiently and quickly install the canopy without stopping the operation.

[0037] The Beijing-Tianjin Intercity Railway is an important part of the intercity rail transit network in the Bohai Rim region of China. It is China's first high-standard high-speed railway with a design speed of 350 kilometers per hour. Yizhuang Station is located in Yizhuang Development Zone, Taihu Town, Tongzhou District, Beijing. It was completed in August 2008. Yizhuang Station adopts a horizontal station type with a center mileage of K22+426. The main line is not close to the platform and there are two arrival and departure lines. The line spacing between the main lines is 5.0m. Due to the installation of platform canopy pillars and drainage facilities between the main line and the arrival and departure lines, the line spacing is 6.5m. In order to meet the current operational needs, the old canopy needs to be dismantled and updated. The solution of this application is to install a new canopy on the canopy frame where the old canopy has been dismantled. The projected area of the new canopy is 11,834.72 square meters.

[0038] like Figures 1 to 11 As shown, the present invention discloses a process for installing a new canopy for a high-speed railway platform within a skylight point of an operating line. The new canopy is a bottom-hung, bilaterally symmetrical canopy. The new canopy is installed on a canopy frame after the old canopy has been removed. The canopy frame after the old canopy has been removed comprises: a triangular truss beam 1, a composite steel column 2 vertically connected to the triangular truss beam 1, a steel cable 3 connected to one end of the composite steel column 2 away from the ground and to one end of the triangular truss beam 1 away from the composite steel column 2, and a bottom-hung purlin support connected to the triangular truss beam 1.

[0039] Please see the attached Figure 1 , the installation process includes the steps of:

[0040] S1. Preparation before installation;

[0041] S2. Symmetrical construction: hoist the canopy unit module to the corresponding position of the canopy frame and connect it to the canopy frame;

[0042] S3. Remove the auxiliary components after use;

[0043] S4. Connect the adjacent canopy unit modules on the same side.

[0044] In the present invention, by completing the pre-assembly of the canopy unit modules on the ground in advance and carrying out strict quality inspections on each component, potential quality problems can be identified and resolved in advance, which can significantly shorten the construction time within the skylight point and enable subsequent construction to proceed smoothly and efficiently.

[0045] Symmetrical construction ensures that the external forces such as gravity and lifting tension on both sides of the structure are evenly distributed on the canopy frame, effectively preventing structural deformation or damage caused by uneven force, effectively ensuring the stability of the existing canopy frame structure, and providing reliable protection for the safe operation of high-speed railways. At the same time, during the symmetrical construction process, the installation conditions on both sides can be compared with each other, which helps to improve installation accuracy, effectively reduce the accumulation of installation errors, and thus ensure that the entire canopy is installed to a high standard.

[0046] Timely removal of used auxiliary components not only creates a good working space for subsequent sealing, decoration and other finishing work of the awning, but also allows them to be reused for the installation of subsequent awning unit modules.

[0047] In a specific implementation of this embodiment, the newly built canopy structure adopts a plane tube truss structure, the main cross-section of which is 160*100*10 (square tube steel), 160*100*12 (square tube steel), Φ76*4, and the material is Q355B.

[0048] In a specific implementation of this embodiment, the triangular truss beam 1 is a vertical space triangular truss beam 1; the main truss spacing is 3.00m and 1.25m, the structural clear span is 30.30m, the cantilever on both sides is 3.80m, the total length of the canopy structure is 435.10m, and the total width is 13.50m; the cantilever ends on both sides of the structure and the side near the track use P45*4 steel pipes as horizontal supports, and the material is Q355B; UU25 finished steel pull rods are used on the side away from the track.

[0049] In a specific implementation of this embodiment, step S1 is completed within the skylight point before step S2, and step S1 includes:

[0050] S1.1. Preliminary treatment of the awning frame after the old awning has been removed;

[0051] S1.2. Preliminary treatment of newly built canopies;

[0052] S1.3. Roadbed preparation for crawler crane operation.

[0053] In a specific implementation of this embodiment, steps S1.1, S1.2, and S1.3 may be performed simultaneously or one after another (including S1.3 first or S1.2 first, then S1.1). In actual construction, the installation period of the new canopy main structure is from July 1, 2024 to August 30, 2024.

[0054] In a specific implementation of this embodiment, step S1.1 is completed during the skylight period, and step S1.1 includes:

[0055] S1.1.1. Measure, inspect and repair the lower purlins of the canopy frame after the old canopy has been removed;

[0056] S1.1.2, install, polish and inspect the davits;

[0057] Steps S1.1.1 and S1.1.2 can be run one by one (including S1.1.2 first, then S1.1.1) or simultaneously. In actual construction, the construction period of step S1.1 is from July 1, 2024 to August 15, 2024, for a total of 46 construction periods.

[0058] In a specific implementation of this embodiment, step S1.1.1 is performed using a 300-min or 180-min skylight point.

[0059] In a specific implementation of this embodiment, the step S1.1.1 includes: removing the original purlin brackets that cannot be reused, and installing new purlin brackets.

[0060] In a specific implementation of this embodiment, the hanging column is a structural rod with a cross-section of 100*80*8mm and a material of Q355B; the thickness of the stiffening plate is 8mm and the material is Q355B; there are 6 stiffening plates corresponding to a single hanging column, and 4 of the 6 stiffening plates are set in the along-track direction (the direction parallel to the track arrangement direction), and the other 2 stiffening plates are set in the vertical track direction (the direction perpendicular to the track arrangement direction); for a specific implementation method, the along-track direction refers to the east-west direction; the vertical track direction refers to the north-south direction.

[0061] In a specific implementation of this embodiment, the newly built canopy and the lower hanging purlin supports of the canopy frame after the old canopy has been removed are connected by hanging columns and stiffeners; according to the actual situation on site, the existing canopy frame (the canopy frame after the old canopy has been removed) has a total of 11 purlin supports corresponding to the position of a single canopy unit module, 5 of which are used in the newly built canopy structure, 1 is re-welded, and a total of 6 existing canopy purlin supports are removed from the lower chord of the single-side truss.

[0062] In a specific implementation of this embodiment, (on one side) for directly using five purlins as connection nodes:

[0063] First, inspect the existing purlins. Once qualified, repair the purlin joints to a regular, aesthetically pleasing appearance. Once these joints are repaired, polish the lower surface of the connection. While the existing canopy purlins are being repaired and polished, measure the existing purlin support plates. Utilize the skylights before module installation to pre-cut, install, and inspect the suspenders. Once the suspenders pass inspection, install the new canopy modules. Once the suspenders are welded and tested, install the suspender stiffeners.

[0064] In a specific implementation of this embodiment, (on one side) for a re-welded purlin used as a connection node:

[0065] The middle part of the newly installed purlin support node is a P152*8 round tube, with stiffening plates on both sides. The structure is the same as the original purlin support after treatment.

[0066] In a specific implementation of this embodiment, the horizontal distance between the newly built canopy structure and the contact network is 1236 mm, the vertical distance is 1946 mm, and the straight-line distance is 2305 mm.

[0067] In actual construction, the construction time of step S1.2 is from July 10, 2024 to August 25, 2024. In a specific implementation of this embodiment, step S1.2 includes:

[0068] S1.2.1. Assemble, connect, paint and inspect the newly built canopy on the ground;

[0069] S1.2.2. Tie the canopy unit modules with steel wire ropes;

[0070] S1.2.3. Level the canopy unit modules on the ground.

[0071] In the present invention, the pretreatment of the canopy unit module is completed on the ground, which reduces the construction risk and improves the construction efficiency compared with high-altitude operations; the ground environment space is larger, which is convenient for refined construction operations and effectively ensures the quality of the assembly and welding of the canopy unit module.

[0072] Please see the attached Figure 9 In a specific implementation of this embodiment, step S1.2.1 uses a truss assembly cradle for assembly; the truss assembly cradle uses a cross-section of no less than H150*150 (H-shaped steel), 150*150 (square tube steel), or P60*3.4 steel (circular tube steel with an outer diameter of 60mm and a wall thickness of 3.4mm). L30 angle steel can be used to set supports at local locations of the cradle. The lower chord of the cradle overhead truss is 500mm above the ground, and a single truss is set at no less than 3 points; a steel cradle with a length greater than 500mm is placed horizontally on the concrete floor as a base, and a cross-shaped steel cradle is used as a base on unhardened ground. The main truss is assembled in two sections in the factory workshop. After assembly, it is assembled on site using 50T and 25T truck cranes. The new canopy roof cable ducts, rainwater pipes, and gutters are assembled on the ground simultaneously with the steel structure.

[0073] Specifically, during the assembly of the canopy unit modules, the total weight of a single truss and its lifting measures is 3.68 tons. Using a 25T truck crane for lifting, with a worst-case lifting radius of 7.42m, a 22.9m boom length, and a 45° elevation angle, the truck crane can lift 9.9T (> 3.681T), with a load factor of 37% and a safety factor of 2.69.

[0074] During the unit module assembly process, the total weight of a single truss and its lifting measures is 3.68 tons. A 50T truck crane is used for lifting. With a worst-case lifting radius of 7.6m, a 19.15m boom length, and an elevation angle of 63.3°, the truck crane can lift 19.4 tons (> 3.68 tons), a load factor of 19%, and a safety factor of 5.27.

[0075] Therefore, you can choose either a 25T truck crane or a 50T truck crane, but the 50T truck crane with a higher safety factor is preferred.

[0076] In a specific implementation of this embodiment, step S1.3 includes:

[0077] 300mm of concrete was laid along the crawler crane's planned route, and HRB400-grade double-layer, bidirectional steel bars (Ø12@250 mm) were installed at the lifting station. Pipeline areas were reinforced with concrete overlays and protected with roadbed boxes. Trees in the ditches within the lifting area have been removed and backfilled in coordination with relevant authorities.

[0078] In a specific implementation of this embodiment, the crawler crane includes four auxiliary legs, and steel sleepers are placed between the auxiliary legs and the ground.

[0079] In a specific implementation of this embodiment, the symmetrical construction described in step S2 refers to the asymmetrical installation of at most three canopy unit modules on both sides of the canopy frame. In actual construction, due to the influence of various factors, such as construction site conditions, equipment operation convenience, and differences in construction difficulty at different locations, it is difficult to achieve complete synchronization of canopy unit modules on both sides. The solution of the present invention allows asymmetrical installation to give construction a certain degree of flexibility, can better adapt to the actual situation on site, and speed up the overall construction progress while ensuring construction quality, reducing the time wasted waiting for the two sides to be completely synchronized; limiting the degree of asymmetrical installation (at most three intervals) to ensure that the installation progress of the canopy unit modules on both sides does not differ too much, ensuring the relative balance and stability of the canopy structure during construction, reducing the risk of uneven structural force caused by excessive differences in the installation progress on both sides, and helping to ensure construction safety; at the same time, it is also conducive to the reasonable scheduling and arrangement of construction resources, avoiding the situation where resources are idle due to excessive advancement on one side or resource shortages on the other side due to slow progress, making the entire construction process more orderly and efficient.

[0080] In a specific implementation of this embodiment, two crawler cranes are used for symmetrical construction; the model of the crawler cranes is XGC400.

[0081] In a specific implementation of this embodiment, the canopy unit modules are installed from one end to the other end (from west to east) in a predetermined direction. For the installation of canopy unit modules on the same side, after the previous module is installed, its overhang is ready for installation and can be installed immediately or subsequently.

[0082] In principle, the canopy unit modules on both sides (north and south) need to be installed synchronously, but a certain degree of asymmetric installation is allowed;

[0083] For example, when the fifth awning unit module is being installed on one side (such as the north side), the second awning unit module is being installed at the slowest on the other side (the south side), and the eighth awning unit module is being installed at the fastest, that is, the intervals between the asymmetrically installed awning unit modules on both sides are at most three.

[0084] In a specific implementation of this embodiment, step S2 includes:

[0085] S2.1. Lift the canopy unit module to 300 mm below the installation elevation and move it horizontally to the bottom of the triangular truss beam 1;

[0086] S2.2. Lift the canopy unit module 300mm, tighten it and connect it to the canopy frame.

[0087] In a specific implementation of this embodiment, before hoisting the canopy unit module, a trial hoisting of the module is performed using the skylight point.

[0088] In a specific implementation of this embodiment, step S2.1 includes:

[0089] During the horizontal movement, the posture of the canopy unit module is controlled by the ropes of three 1T manual hoists set on each side; the manual hoists can be fine-tuned vertically and horizontally; during the fine-tuning process using the manual hoists, the crawler crane maintains the lifting posture unchanged; the ropes are made of hemp rope with a diameter of 14mm.

[0090] In a specific implementation of this embodiment, step S2.2 includes:

[0091] Use the hand hoists on both sides to perform leveling and tightening, make temporary connections through the clamp 5, and weld the connection nodes.

[0092] Specifically, after the canopy module is fine-tuned into place by the hoist, the clamp 5 node is installed for temporary connection. The clamp 5 is connected to the intersection of the lower chord and the web of the existing canopy main truss, 255mm away from the center of the existing main purlin.

[0093] Please see the attached Figure 5 and attached Figure 6 Hoop 5 is made of a combination of round steel and square tube, with cross-sections of Ø18 round steel and 100*80*8 (square steel), respectively. It is tightened with 10mm spring washers and M18 double nuts. After the double nuts are installed, 0.3mm wire is tied around the lower threads of the nuts to prevent them from falling off. After the installation of the hoop 5 node is completed, the welders weld the truss suspenders to the newly built canopy trusses.

[0094] According to actual construction calculations, using clamp 5 connection, the maximum deformation of the new canopy module in the mid-span is 130.8mm, the overall maximum stress ratio of the structure is 0.67<1, the maximum stress ratio of the main truss is 0.37<1, and the maximum stress ratio of the secondary truss at the clamp 5 position is 0.67<1, which can meet the construction needs.

[0095] In a specific implementation of this embodiment, step S3 includes:

[0096] Unhook the unit module and remove the hand hoist.

[0097] Specifically, after the connection and installation of the clamp 5 nodes are completed, the crawler crane can release the hook.

[0098] In a specific implementation of this embodiment, the crawler crane releases the hook in a gradual unloading manner; more specifically, the order of the crawler crane releasing the hook is: the crawler crane releases the hook and gradually unloads the force in the order of 10% → 20% → 30% → 40% of the total load.

[0099] In a specific implementation of this embodiment, step S4 includes:

[0100] Weld the stiffeners at the connection nodes (after welding is completed and welding quality inspection is completed), remove the hoop 5, and connect the adjacent canopy unit modules on the same side by welding.

[0101] Specifically, after the installation of the clamp 5 is completed, the connection point between the suspender and the newly built truss is welded. After the welding is completed and the flaw detection is passed, the clamp 5 is removed.

[0102] In a specific implementation of this embodiment, (corresponding to step S4), after the lifting module is welded to the existing main truss, the welding connection of the rods between the unit modules is started. Before welding the rods between the modules, L-shaped plates and 1T jacks are used for fine-tuning. After the adjustment is completed, welding is carried out. After welding is completed, the weld position is ground and inspected for flaws. After passing the flaw detection, the weld position is painted.

[0103] Please see the attached Figure 4 In a specific implementation of this embodiment, one end of the L-shaped plate 4 is connected to the canopy unit module;

[0104] The jack is supported on the other end of the L-shaped plate 4;

[0105] The material of the L-shaped plate 4 is Q235.

[0106] In a specific implementation of this embodiment, when the new canopy is assembled on the ground, the welding connection points are polished and inspected, the unit modules are accepted, and the welding of the suspending columns under the purlins is completed and tested to be qualified before the unit modules can be hoisted;

[0107] Put the crawler crane in place and connect the shoulder pole sling. Clear the personnel, materials and machinery under the operation radius. Lift the crawler crane hook 500mm and check the shoulder pole connection. If qualified, wait for the skylight point.

[0108] At the first skylight point, the crawler crane lifts the hook truss, with the lowest point 16.3m above the ground. The boom is rotated 30°, and the roof is adjusted into position using the slip rope. The crawler crane continues to rotate the boom until it is aligned with the installation position. The crawler crane then tilts the boom forward, and the roof is in place (corresponding to step S2.1).

[0109] The hoist is used to adjust and position the nodes, securing the clamp 5. The welding of the connection points between the davit and the newly constructed canopy begins (step S2.2). After the clamp 5 is installed, the crawler hoist removes the hook and cleans the site (step S3). The first skylight is complete. The next skylight is used to inspect the connection welds, and the butt welds between the modules are then constructed simultaneously (step S4).

[0110] In a specific implementation of this embodiment, the newly built canopy includes: purlins and roof panels, and the roof panels are fixed to the purlins by self-tapping screws;

[0111] There are windproof pressure sheets and waterproof rubber pads between the self-tapping screws and the roof panels;

[0112] The roof panel has two opposite ends with different widths;

[0113] When multiple roof panels are laid, the larger width side of the roof panel is pressed on the smaller width side of the adjacent roof panel.

[0114] In a specific implementation of this embodiment, the end of the roof panel is fixed with three self-tapping screws. The edgemost of the three self-tapping screws is shared with the adjacent roof panel (fixing the portion where two roof panels are pressed together), and the other two are used to fix the roof panel itself.

[0115] The specification of the self-tapping screws is ST6.3*75, and the thickness of the lower keel of the roof panel is 2.2mm.

[0116] In a specific implementation of this embodiment, the purlin is a galvanized Z-shaped purlin with a cross-section of 140*50*20*2;

[0117] Adjacent purlins are provided with round steel tie rods with a diameter of 12 and support rods with a diameter of 32 and a wall thickness of 3.5;

[0118] The materials of the pull rod and the support rod are both Q235B.

[0119] In a specific implementation of this embodiment, the roof gutter system and rainwater pipe are installed simultaneously with the ground assembly of the canopy steel structure, and after installation, they are hoisted to the roof along with the canopy.

[0120] In a specific implementation of this embodiment, the installation of the canopy roof panels is carried out in a continuous manner along with the canopy steel structure, and the finishing work of the anti-falling, horseway and roof system is carried out in a continuous manner after the single-span roof panels are completed.

[0121] In a specific implementation of this embodiment, the following also includes: construction and installation of auxiliary equipment, including: installation of canopy lighting, pipelines, rainwater pipes, information equipment, replacement of damaged platform stone, replacement of stainless steel railings, installation of escalator canopies, installation and removal of escalators, installation of floor-standing static signs, etc.

[0122] The canopy's siphonic rainwater pipes and cable troughs were hoisted as part of the canopy's steel structure assembly. Other work was carried out within the skylight after the canopy was installed.

[0123] In actual construction, the installation of roof panels and platform canopy accessories will be carried out from July 10, 2024 to September 10, 2024.

[0124] In a specific implementation of this embodiment, the main construction machinery for installing the canopy includes (2 units) 400T crawler cranes, (1 unit) 100T truck cranes, (2 units) 50T truck cranes, (3 units) 25T truck cranes, (16 units) hoists (fall chains), etc.

[0125] In a specific implementation of this embodiment, the main construction equipment for installing the roof panel includes (2) 25T truck cranes, (1) 9m truck crane, argon arc welding machine, hand drill, cutting machine, etc.

[0126] Please see the attached Figure 8 In a specific implementation of this embodiment, a 400-ton crawler crane is used to hoist the canopy structure as a whole unit module by utilizing the construction skylight point, and the crawler crane is stationed on both sides to remove the construction hardened road surface;

[0127] The canopy unit modules on one side include: standard modules and non-standard modules (cantilever modules);

[0128] Standard modules are hoisted using hoisting poles;

[0129] Please see the attached Figure 10 and attached Figure 11 A single standard module has 12 lashing points, and a cantilever module has 4 lashing points.

[0130] Please see the attached Figure 7 For cantilever modules, installation is the same as for standard modules. During installation, the clamps (5) must be installed within the skylight and the main truss inter-chord plates (6) must be welded. The main truss upper chords are temporarily connected using plates (6). These plates are then welded to the main trusses using full penetration groove welding. The cantilever trusses can be unhooked only after the clamps (5) have been installed and pre-tightened, and the main truss upper chord plates (6) have been connected.

[0131] In a specific implementation manner of this embodiment, the size of the code plate 6 is 160*50*10 mm; there are a total of 6 main trusses at the cantilever position, and 1 code plate 6 is arranged on the upper chord at the end of each truss to connect with the adjacent-span structure.

[0132] According to the actual construction calculation, when using the hoop 5 and the temporary code plate 6 for connection, the maximum deformation of the newly built awning cantilever structure is 6.03 mm < L / 125 = 30.4 mm, and the overall maximum stress ratio of the structure is 0.39 < 1, which can meet the construction requirements.

[0133] In a specific implementation manner of this embodiment, for the weight statistics of the standard weight module: the main structure is 22.6 T; purlin supports and purlins are 2.0 T; gutter is 1.5 T; paint and fireproof coating are 2.0 T; construction load is 1.0 T; the total is 29.1 T;

[0134] The weight of the hook, rigging and spreader is 15.0 T; therefore, the hoisting weight of the standard module unit is 44.1 T.

[0135] In a specific implementation manner of this embodiment, for the weight statistics of the cantilever module: the main structure is 3.5 T; purlin supports and purlins are 0.3 T; gutter is 0.2 T; paint and fireproof coating are 0.3 T; construction load is 1.0 T; the total is 5.3 T;

[0136] The cantilever module is hoisted directly by wire rope lashing. The weight of the hoisting hook, wire rope and shackle is 6.2 T; therefore, the hoisting weight of the cantilever module unit is 11.5 T.

[0137] In a specific implementation manner of this embodiment, the distance between two adjacent triangular truss beams 1 is one span, and the standard module of a single awning unit module is arranged at the position of one span, and multiple standard modules are arranged in sequence along each span;

[0138] For the non-standard module, only one end is connected to the awning frame to form a cantilever structure.

[0139] In a specific implementation manner of this embodiment, an outer coating is applied to the outer structure of the awning;

[0140] The outer coating of the awning structure mainly includes:

[0141] Anticorrosive primer: 2 coats of waterborne inorganic zinc-rich primer, the dry film thickness is not less than 70 μm, and the zinc content is required to be ≥ 80%;

[0142] Intermediate paint: 1 coat of epoxy mica iron intermediate paint, the dry film thickness is not less than 70 μm;

[0143] Topcoat: 3 coats of acrylic polyurethane.

[0144] In a specific implementation of this embodiment, the thickness of the outer coating of the canopy structure is not less than 100 μm, and the fire-resistant time of the fire-resistant coating is 1.5 hours.

[0145] Please see the attached Figure 2 and attached Figure 3 In a specific implementation of this embodiment, the standard module of the canopy unit module is divided into 13 blocks from west to east; the north side is marked as A and the south side is marked as B; for example, the 5th block on the north side is marked as Y5A; for example, the 11th block on the south side is marked as Y11B, and so on.

[0146] In a specific implementation of this embodiment, a non-standard module (cantilever module) is provided at each end of the canopy unit module on one side (e.g., the north side), with Y1A cantilevered near Y1A and Y13A cantilevered near Y13A;

[0147] For the canopy unit module on the south side, it includes the Y1B overhang near Y1B and the Y13B overhang near Y13B.

[0148] In a specific implementation of this embodiment, the size of the standard unit module is 32.7m (length)*13.6m (width)*1.2m (height);

[0149] The dimensions of the non-standard module are 5.0 m (length)*13.6 m (width)*1.2 m (height).

[0150] The south side structure of the newly built canopy is symmetrical with the north side structure.

[0151] When installing the Y13A and Y13B sections of the new canopy, the total weight of each module and the measures is 44.1 tons. Using a 400T crawler crane (30m main boom + 36m jib) for tower installation, with a worst-case lifting radius of 26m and a boom angle of 80°, the crawler crane can lift 67.6T (a weight greater than 44.1T), a load factor of 65%, and a safety factor of 1.53.

[0152] When installing the Y10A and Y10B sections of the new canopy, the total weight of each module and the measures was 44.1 tons. A 400T crawler crane (30m main boom + 36m jib) was used for tower-type removal. At a worst-case lifting radius of 24m and an 80° boom angle, the crawler crane could lift 74.2T (a weight greater than 44.1T), achieving a load factor of 59% and a safety factor of 1.68.

[0153] The new canopy's eastern overhang sections (Y13A and Y13B) were installed, each weighing 5.3 tons, with the locks weighing a total of 6.2 tons. A 400-ton crawler crane (30m main boom + 36m jib) was used for the tower-style demolition. With a maximum lifting radius of 28 meters and a boom angle of 80°, the crawler crane could lift 63.9 tons (a weight greater than 11.5 tons), a load factor of 19%, and a safety factor of 5.26.

[0154] When the on-site construction conditions change, Y1A cantilever, Y1B cantilever, Y13A cantilever and Y13B cantilever can be hoisted by 100T truck crane. The most unfavorable hoisting radius is 28.0m, and the arm length is 54.9m. At this time, 8.8T can be hoisted. The total weight of components and measures is 6.2T, the crane load rate is 70%, and the safety factor is 1.42.

[0155] For the installation of awning roof panels:

[0156] 1. Construction of corrosion-resistant corrugated steel plates on the roof surface

[0157] Construction process: laying out the lines → transporting and installing → fixing and paving the roof panels → patching → edge trimming and flashing installation → roof cleaning → self-inspection and rectification → reporting for inspection.

[0158] Before construction, the metal roof must undergo a wind-uplift test, and construction can only begin after passing the test. Corrosion-resistant corrugated steel sheets are directly fixed to the roof purlins using 6.3*75 stainless steel self-tapping screws. Wind-proof pressure sheets and waterproof rubber pads are installed between the self-tapping screws and the roof panels to increase the roof panels' wind-uplift resistance and ensure waterproof performance.

[0159] According to the installation sequence of the steel structure, the roof panels are planned to be laid symmetrically from west to east, south, and north along the platform canopy. The effective width of the roof panels for this project is 773mm. The panels have a large edge at each end, and the panels are laid with the large edge pressing down on the small edge. Considering the roof's wind-induced safety, a dedicated person will be responsible for fixing each roof panel after it is laid to ensure there is no risk of it falling.

[0160] During construction, all metal roof panels planned to be installed in the same skylight must be nailed and connected, and uninstalled roof panels shall not be stored on the awning.

[0161] Skylight construction deployment: 1) At the first skylight site, workers were assigned to lay the roof panels. Each 14-meter-long panel required eight workers to simultaneously lift and lay it. Once the panels were in place, four workers were assigned to perform nailing work. It was estimated that each skylight site could complete 300 square meters of roof panels within 300 minutes. 2) At the second skylight site, approximately 300 square meters of roof panels had already been completed. In addition to the regular paneling workers, four workers were assigned to complete the finishing work on the area of roof panels completed at the first skylight site. This process was repeated for subsequent skylight sites, forming a streamlined operation. 3) At the third skylight site, access ramps and fall arrest bars were installed.

[0162] 2. Construction of roof gutter system

[0163] The gutter of this project is made of 3.0mm stainless steel plate. A deformation joint is set in each span along the length of the gutter. Each section of the gutter is separated by a deformation joint baffle. A cover plate is added on the upper part to maintain the integrity of the gutter and realize the expansion and waterproof functions. A retractable connecting pipe is set between each expansion joint to ensure that if there is a span with untimely drainage, it can also flow to the adjacent ditch through the connecting pipe for smooth drainage.

[0164] Construction process flow: gutter ground installation → gutter plate hoisting with structure → gutter connection and expansion joint treatment → gutter cleaning → self-inspection and rectification → inspection.

[0165] Construction deployment: The gutter construction is divided into two stages: ground installation and gutter connection in the skylight point.

[0166] 1) In conjunction with the steel structure team, adopt the plan of hoisting the structure of each span as a whole, and install the gutter on the ground along with the structure, with each span of about 32 meters, and then hoist it into place along with the structure as a whole to improve the docking quality of the gutter and improve work efficiency; 2) After the two spans of the gutter are hoisted into place along with the structure, during the construction of the skylight point, the two spans of the gutter will be docked and the gutter expansion joints and connecting pipes will be installed.

[0167] 3. Roof maintenance bridleway construction

[0168] The bridleway handrails, crossbeams, and tread supports for this project are constructed from 40*4" hot-dip galvanized square tubes, while the side beams are constructed from 60*40*4" hot-dip galvanized square tubes laid throughout the entire length. The treads are finished with 30*3" galvanized steel grating. The entire bridleway system is connected to the roof panels via specialized aluminum alloy connecting bases.

[0169] Construction process: assembly of the horse track ground (6 meters) → installation of the horse track base → connection and fixation of each section of the horse track → installation of the horse track treads → self-inspection and rectification → inspection.

[0170] Construction points: Construction content within the skylight point: Fix the special aluminum alloy support to the roof panel by means of self-tapping screws, then connect the horizontal crossbar of the horseway to the special aluminum alloy support, lay the horseway grille, and finally weld the 6-meter handrail assembled on the ground to the horizontal crossbar.

[0171] The horseway was assembled into 6-meter handrails on the ground, and then hoisted to the roof for installation within the skylight point. It was calculated that the weight of each 6-meter handrail was about 0.224 tons. A 25-ton crane was used for hoisting. The module was hoisted to the roof for construction. The maximum operating radius of the crane was about 42 meters, and the maximum lifting capacity was 3.5 tons. The load met the safety requirements.

[0172] 4. Construction of roof fall protection system

[0173] Construction process flow: installation of special anti-fall support → installation of anti-fall circular pipe → self-inspection and rectification → inspection report.

[0174] Key points of construction: The roof anti-fall system of this project is distributed on one side of the horseway. The anti-fall pipe adopts Ф32 stainless steel round tube, which is fixed to the crossbar of the horseway through L63*4 angle steel corner code. The fixed spacing is 1546mm. The anti-fall system can protect the safety of maintenance personnel. It is required that only one person can be hung within each 1546mm range.

[0175] The roof panels are installed using two 25-ton cranes (one on each platform on the north and south sides) to lift the required materials to the top of the roof canopy structure. The length of the roof panels is 14 meters. In order to prevent the risk of deformation and falling of the roof panels during lifting, a shoulder pole cradle is used to assist in lifting. The cradle is assembled from two 6-meter 180*100 square tubes and 40*40 square tubes. The cradle weighs about 0.8 tons. The maximum operating radius of the crane is about 18 meters, the maximum lifting capacity is 3.5 tons, the lifting cradle is 0.8 tons, and the weight of a corrosion-resistant corrugated steel plate is 0.126 tons. The number of roof panels lifted at a single time shall not exceed 12 (including the weight of the shoulder pole, a total of 2.3 tons).

[0176] The crane's lifting capacity is 3.5 tons > 2.3 tons, the load factor is 65.7%, and the safety factor is 1.52.

[0177] For the construction of platform canopy accessories:

[0178] 1. Siphon rainwater system

[0179] 1) System Overview: This project utilizes a siphonic rainwater drainage system for the platform canopy and siphonic rainwater gutters on the roof. Rainwater is collected by the gutters and discharged through rainwater risers to the outdoor rainwater system. An overflow system is installed to ensure that the combined drainage capacity of the roof drainage system (10-year return period discharge volume) and the overflow facility is no less than the 100-year return period discharge volume. The gutter's deflector is bolted to the gutter to prevent wind displacement. The siphonic rainwater piping utilizes siphon-specific HDPE pipe, grade PE100, and the same brand of HDPE pipe and fittings ensure a reliable and leak-proof system connection. The HDPE pipe suspension device is primarily used for the installation of HDPE suspension pipes and is fixed to the roof steel structure. The built-in square steel suspension beam reduces the number of pipe suspension points on the roof truss, converting any expansion and contraction of the HDPE pipe into axial stress, thereby controlling pipe elongation.

[0180] 2) Installation process: suspension system installation → siphon rainwater bucket installation → longitudinal horizontal pipe installation → branch pipe installation → vertical pipe installation.

[0181] 3) Suspension System Installation: The rainwater pipe suspension system was installed simultaneously with the truss ground assembly. The suspension system's suspension points were welded to the square steel bars of the truss' upper chord using #10 channel steel, with a spacing of 2.5 meters. 40*40*2.5 galvanized square steel pipes were secured with screws and square steel clamps to form the energy-dissipating suspension system.

[0182] 4) Siphonic rain gutter installation: After the gutter is installed, the gutter position is measured and located, and the stainless steel gutter hole is opened. The chassis is installed by welding. The rain gutter and gutter are welded together using argon arc welding. The weld line is the outer edge of the rain gutter flange. The weld should be smooth and flat, and no broken welds are allowed. There should be no welding slag or weld scars on the surface.

[0183] 5) Pipeline connection: Horizontal main pipes are connected by hot melt butt welding, and the connections between branch pipes and main pipes and other parts that cannot be connected by butt welding are connected by electric fusion.

[0184] 6) Pipeline Installation: Horizontal main and branch pipes are assembled on the ground and hoisted into the truss. On the platform, only the pipes and risers between the two spans need to be connected. Pipeline installation above the platform is carried out using a boom truck. Before construction, the catenary arm must be protected with fireproof cloth, and the rails must be covered with wooden planks and fireproof cloth. Contact between the boom truck and existing equipment, such as the catenary wires and towers, must be strictly controlled. Dedicated safety officers will monitor the entire construction process and deter any potential contact with the catenary.

[0185] 2. Awning lighting system

[0186] 1) System Overview: This project's platform canopy lighting utilizes 50W LED downlights with built-in wire rope fall arresters. The main line runs from the station building to the 5th axis bridge pier (where a hole has been reserved for the existing canopy lighting). A bridge is laid along the main truss columns to the canopy. Branch lines are connected to the lighting fixtures using bridges and galvanized steel pipes. A distribution box is located in the station building's power distribution room and is centrally controlled by an intelligent lighting system.

[0187] 2) Installation Process: Horizontal bridge and branch pipe installation → Horizontal cable laying → Trunk bridge and trunk cable laying → Lighting installation. The canopy's horizontal bridge and lighting wiring within a single span are constructed simultaneously with the ground assembly of the steel structure. Joints, the vertical main bridge, and lighting are installed on the platform using a boom truck and a lift truck.

[0188] 3) Horizontal bridge installation: The horizontal bridge uses a 50*25 galvanized bridge, installed between the brace and the upper chord. The bridge is fixed to the upper chord with flat-head dovetail nails, and 25*4 angle steel brackets are welded between every two upper chords. The bridge is fixed at a spacing of 1.5 meters.

[0189] 4) Branch pipe installation: The branch pipe is a Φ20 galvanized steel pipe, which is fixed on the upper and lower chords with two saddle clamps.

[0190] 5) Bridge wiring and trunk bridge installation:

[0191] Lighting wiring within a single span was constructed simultaneously with the ground assembly of the steel structure. Inter-span joints, the main bridge, and cable laying were installed on the platform using a boom truck and a lift truck. The main bridge was routed using existing bridges. Protect the overhead contact network equipment and rails in the area before construction. Contact between the boom truck and existing equipment, such as overhead contact lines and towers, was strictly controlled. Dedicated safety officers monitored the entire construction process and prevented any potential contact with the overhead contact network.

[0192] 6) Lighting Installation: The lighting fixture is an LED downlight with a built-in wire rope anti-fall device. First, secure the lighting fixture to the bottom of the lower chord with two Φ8*20mm dovetail nails, then tie it to the lower chord with wire rope. The lighting fixture is positioned at the cross of the lower chord according to the truss structure.

[0193] 3. Awning information system

[0194] 1) System Overview

[0195] The cameras and broadcasting systems for this project were installed on the platform canopy chords. The main line ran from the station building to the 5th axis bridge pier (where the reserved hole for the existing canopy information bridge was located). A bridge was laid along the main truss columns to the canopy, and branch lines were connected to various equipment using branch steel pipes.

[0196] 2) Installation process

[0197] Horizontal bridge and branch pipe installation

[0198] The horizontal bridge of the canopy and the Φ25 galvanized steel pipes used for cameras and broadcasting are assembled simultaneously with the steel structure ground. The joints between spans and the vertical main bridge cameras and broadcasting are installed on the platform using articulated boom trucks and lifting trucks.

[0199] The horizontal bridge is a 200*100 fireproof bridge, installed between the upper chord and the diagonal web. The bridge is fixed to the vertical sub-bars using welded 50*50 square steel pipes, and 40mm*4mm U-shaped brackets are welded between every two lower chords. The bridge is fixed at a spacing of 1.5 meters.

[0200] 3) Camera and broadcast installation methods

[0201] ① The camera adopts the boom clamp 5 method, and the U-shaped clamp 5 and the camera boom base are fixed to the secondary lower chord;

[0202] ② The broadcast speaker adopts the fixed plate connection method. According to the size of the upper chord, the wire is connected to the fixed plates on both sides of the upper chord, and the broadcast speaker is installed on the fixed plate.

[0203] 4) Branch pipe installation

[0204] The branch pipe is a Φ25 galvanized steel pipe and is fixed to the upper and lower chords with two saddle clamps.

[0205] 5) Bridge wiring and trunk bridge installation

[0206] The Φ25 galvanized steel pipes used for cameras and broadcasting on the canopy were constructed simultaneously with the ground assembly of the steel structure. Inter-span joints, the main bridge, and the cabling were installed on the platform using a boom truck and a lift truck. The main bridge was routed using the existing bridge. The boom truck's boom was strictly controlled from contacting existing equipment, such as contact lines and towers. Dedicated safety officers monitored the entire construction process and prevented any potential contact with the contact line.

[0207] In a specific implementation of this embodiment, in order to protect the contact network, the equipment management unit is contacted before construction to carry out power outage and grounding of the contact network, and pre-glued wire is installed on the contact network under the canopy to prevent damage to the contact network during construction.

[0208] In a specific implementation of this embodiment, the contact network along the operation area is protected during the construction process, and the contact network below the welding and cutting operation points is protected by wrapping it with flame retardant materials such as fireproof cloth.

[0209] In a specific implementation of this embodiment, windproof and fireproof cloth is used to block and cover the cutting and welding process, and a fire hopper is used to connect the fire to prevent welding slag from falling. Fireproof cloth is also used to cover the contact network arm, contact network wire, load-bearing cable and rails to prevent welding slag from falling and damaging the rails and contact network. At the same time, bamboo plywood is laid on the rails to prevent heavy objects from falling and damaging the rails.

[0210] During the dismantling process, welding cables, gas pipes and lighting cables must be tied and fixed with binding tape, and the fixed wire pipes must be separated from the steel structures with insulating tape or insulating materials.

[0211] The new canopy standard module for this project was constructed from dismantled canopy poles. The main beam, a Q355B steel beam with a cross-section of H400*400*13*21mm, was used. Auxiliary crossbeams and diagonal braces, each with a cross-section of H200*200*8*12mm and made of Q235B, were installed in the middle. The pole had eight upper hanging points, four of which were the main ropes and four on the outer sides were adjustment ropes. Six lower hanging points were provided, corresponding to each main truss position.

[0212] In a specific implementation of this embodiment, the four-point hanging on the upper part of the shoulder pole uses a 300*240*25mm ear plate with a 42mm top opening and 20mm stiffening ribs welded on the side wings, made of Q355B;

[0213] The lower lifting lugs of the lifting beam have dimensions of 240*220*25 mm, are made of Q355B material, and are connected by a D30 steel wire rope and an 8t shackle to the main truss of the new awning through a shackle and a sling. The main hook of the crawler crane is connected to the upper lifting lug of the (lifting) beam by a D48 sling and a D20 shackle. Four D20 auxiliary adjustment lifting ropes and 8T shackles are installed at the corner positions of the beam and are used in conjunction with a 5T chain block for auxiliary adjustment; the shackles are D-shaped alloy steel shackles.

[0214] In a specific implementation of this embodiment, each module has a total of six main trusses. At the upper chord lifting point positions of each truss, 2 short D30 steel wire ropes are interconnected and slung around the upper chord of the main truss using 8T shackles. During construction, a manual hoist (hand chain hoist) is used for leveling. A sheet of iron with a thickness of more than 0.5 mm is placed between the sling and the main truss to protect the steel wire rope. The iron sheet is tied to the steel wire rope with wire firmly to prevent it from falling off.

[0215] Calculation for awning hoisting construction:

[0216] During the installation of the standard module, the deformation in the X direction is 2.11 mm, the deformation in the Y direction is 8.72 mm, the deformation in the Z direction is 24.44 mm, and the maximum stress ratio is 0.24; the maximum deformation of 24.44 mm < L / 250 = 130.8 mm (L is the maximum span of the structure), and this deformation is the deformation during the hoisting process; the maximum stress ratio of 0.24 < 1.0, so the standard module and its lifting beam can meet the requirements of hoisting construction;

[0217] During the installation of the non-standard module (cantilever module), the deformation in the X direction is 1.94 mm, the deformation in the Y direction is 1.04 mm, the deformation in the Z direction is 4.27 mm, and the maximum stress ratio is 0.16; the maximum deformation of 4.27 mm < L / 125 = 40 mm (L is the cantilever span), and this deformation is the deformation during the hoisting process; the maximum stress ratio of 0.16 < 1.0, so the non-standard module can meet the requirements of hoisting construction;

[0218] During the installation of the lifting beam, the deformation in the X direction is 11.1 mm, the deformation in the Y direction is 9.8 mm, the deformation in the Z direction is 16.9 mm, and the maximum stress ratio is 0.26; the maximum deformation during installation of 16.9 mm < L / 250 = 24.4 mm (L is the maximum span of the structure), and this deformation is the deformation during the hoisting process; the maximum stress ratio of 0.26 < 1.0, so the lifting beam can meet the requirements of hoisting construction.

[0219] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments using the above technical content without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A process for installing a new canopy on a high-speed railway platform within a skylight point on an operating line, wherein the new canopy is a bottom-hung, bilaterally symmetrical canopy, and is installed on a canopy frame after the old canopy has been removed, characterized in that: The canopy frame after the old canopy has been removed comprises: a triangular truss beam, a composite steel column vertically connected to the triangular truss beam, a steel cable connected to one end of the composite steel column away from the ground and to one end of the triangular truss beam away from the composite steel column, and a bottom-hanging purlin support connected to the triangular truss beam; The installation process includes the steps of: S1. Preparation before installation; S2. Symmetrical construction: hoist the canopy unit module to the corresponding position of the canopy frame and connect it to the canopy frame; S3. Remove the auxiliary components after use; S4. Connect the adjacent canopy unit modules on the same side.

2. The installation process for a new canopy on a high-speed railway platform within a skylight point on an operating line according to claim 1 is characterized in that: Step S1 is completed within the skylight point before step S2, and step S1 includes: S1.

1. Pre-process the awning frame after the old awning has been removed; S1.

2. Pre-process the newly built canopy; S1.

3. Roadbed preparation for crawler crane operation.

3. The installation process for a new canopy on a high-speed railway platform within a skylight point of an operating line according to claim 2 is characterized in that: The step S1.1 includes: S1.1.

1. Measure, inspect and repair the purlins at the bottom of the canopy frame; S1.1.

2. Install, polish and inspect the suspenders at the purlin support positions; The steps S1.1.1 and S1.1.2 may be performed sequentially or simultaneously.

4. The installation process for a new canopy on a high-speed railway platform within a skylight point on an operating line according to claim 3 is characterized in that: The step S1.1.1 includes: The original purlin supports that cannot be reused or the redundant original purlin supports should be removed and replaced with new purlin supports.

5. The installation process for a new canopy on a high-speed railway platform within a skylight point on an operating line according to claim 2 is characterized in that: The step S1.2 includes: S1.2.

1. Assemble, connect, paint and inspect the newly built canopy on the ground; S1.2.

2. Tie the canopy unit modules with steel wire ropes; S1.2.

3. Level the canopy unit modules on the ground.

6. The installation process for a new canopy on a high-speed railway platform within a skylight point on an operating line according to claim 1 is characterized in that: The symmetrical construction described in step S2 refers to the asymmetrical installation of at most three awning unit modules on both sides of the awning frame.

7. The installation process for a new canopy on a high-speed railway platform within a skylight point on an operating line according to claim 1 is characterized in that: The step S2 comprises: S2.

1. Lift the canopy unit module to 300 mm below the installation elevation and move it horizontally under the triangular truss beam; S2.

2. Lift the canopy unit module 300mm, tighten it and connect it to the canopy frame.

8. The installation process for a new canopy on a high-speed railway platform within a skylight point on an operating line according to claim 7 is characterized in that: The step S2.2 includes: Use the hand hoists on both sides to level and tighten, connect through the clamps, and complete the welding connection of the connection nodes.

9. The installation process for a new canopy on a high-speed railway platform within a skylight point on an operating line according to any one of claims 1 to 8, characterized in that: The newly built canopy includes: purlins and roof panels, and the roof panels are fixed to the purlins by self-tapping screws; There are windproof pressure sheets and waterproof rubber pads between the self-tapping screws and the roof panels; The roof panels have opposite ends with different widths; When multiple roof panels are laid, the larger width side of the roof panel is pressed on the smaller width side of the adjacent roof panel.

10. The installation process for a new canopy on a high-speed railway platform within a skylight point on an operating line according to claim 9, characterized in that: The purlin is a galvanized Z-shaped purlin with a cross-section of 140*50*20*2; Adjacent purlins are provided with round steel tie rods with a diameter of 12 and support rods with a diameter of 32 and a wall thickness of 3.5; The materials of the pull rod and the support rod are both Q235B.

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