Construction method of multi-system fusion theater horse path layer system with giant stage frame

Abstract

The present application relates to the technical field of ceiling with components in different planes, discloses a multi-system fusion theater horse path layer system construction method with a huge platform frame, a rectangular platform frame is formed by a core tube and a platform frame beam, and an elevator and a staircase leading to each horse path layer are arranged in the core tube, so that the performance personnel can safely and conveniently go up and down the horse path layer, and the height of the horse path layer is no longer limited; meanwhile, the core tube is supported by a series of theater steel structures, so as to ensure that the core tube is stable and does not exist independently. A reinforcing beam network is additionally arranged on the load-bearing enclosure top as a stress base of the installation hoisting tool, then a plurality of fixed pulleys of the hand-operated hoist are hung below the reinforcing beam network, and the construction personnel on the ground operate the independent hand-operated hoists to hoist the horse path layer on the ground to the installation height in blocks, so that the hoisting process does not cause damage. The combination of the above points significantly increases the space height of the theater for performance, and the construction can be smoothly carried out.

Description

Technical Field

[0001] This invention relates to the field of ceiling technology where components are located in different planes, and in particular to a construction method for a multi-system integrated theater catwalk system with a giant stage frame. Background Technology

[0002] To facilitate the installation of lighting, sound, stage machinery and other auxiliary facilities by staff, theaters need to install multiple layers of suspended ceilings in the air. These suspended ceilings are usually called catwalk levels, and some of them are also called specific names such as lighting bridges and sound bridges depending on their function.

[0003] The catwalk level limits the height of performance spaces in a theater. Performances above the catwalk level are difficult for the audience to see and lack the support facilities available there. However, raising the catwalk level is challenging due to structural limitations. Installing high-rise elevators or even stable staircases is difficult. Staff typically use scaffolded catwalk staircases to reach the level – unstable and physically demanding. Some theaters lack even these, requiring the use of ladders or cranes. Because of the difficulty of climbing, the catwalk level is usually set at a height similar to that of a train station ceiling (too high would require performers carrying heavy equipment up unstable and difficult-to-climb scaffolded catwalk staircases, which is impractical).

[0004] Besides the catwalk level, another structural element limiting the height of performance space in a theater is the rectangular stage frame of a proscenium stage. The proscenium stage is the most classic and commonly used stage form. Like a proscenium frame, the performance area faces the audience on one side, with the audience seated directly opposite the stage. This provides an irreplaceable advantage in terms of stage visual integrity and allows performers to focus solely on their viewpoint from the audience. Other stage types, such as extended stages and circular stages, fall short of the proscenium stage in terms of performance effect. Therefore, unless it's a concert or similar performance where visuals aren't the primary focus, the proscenium stage is generally the preferred choice. However, the rectangular stage frame, which acts as the "fourth wall" (a technical term referring to the imaginary "wall" facing the audience in a proscenium stage), is difficult to enlarge because it's typically a truss-column frame. Enlarging it would require consideration of instability due to horizontal loads. Furthermore, the installation of various reinforcing components within the stage is severely limited.

[0005] For most performances, the height restrictions imposed by the catwalk and rectangular platform have little impact on the performance space, as most performances take place solely on the stage surface. However, for certain performance types, this can have serious adverse effects. The most typical example is acrobatics. As is well known, acrobatics involves a large number of aerial maneuvers, many reaching heights of tens of meters or even higher. In these cases, the height restrictions imposed by the catwalk and rectangular platform prevent the performance from proceeding normally, forcing many acrobatic performances to be held in temporary tents or even outdoors. This significantly reduces the performance's effectiveness and safety (due to inadequate performance and safety equipment). Even in top-tier theaters like the National Centre for the Performing Arts, the rectangular platform is only 14 meters high, lower than the requirements for many acrobatic performances. In China, the height of indoor acrobatic stages is generally below 10 meters. The highest, the Water Show International Grand Theatre, reaches 21 meters. However, this was achieved at the expense of stage versatility and performance effect. It is specifically used to perform the large-scale international acrobatic drama "Water Show". The performance equipment is relatively fixed, so there is no need to frequently climb the horse platform, and the horse platform can be made higher. At the same time, its stage form is an extended stage. The performance effect is not as good as the proscenium stage, but it is not limited by the rectangular stage frame.

[0006] Besides accessibility issues, another problem with the catwalk level of an indoor theater is its unfavorable construction conditions. Because indoor theaters require continuous, large interior spaces, they are typically suspended installations. This necessitates construction after the building's roof is completed, as components cannot be transported using tower cranes and must be hoisted from the ground inside the building. Conventional truck cranes cannot meet the height and weight requirements of the catwalk level for acrobatic performances, necessitating the use of crawler cranes (fully rotating boom cranes with crawler tracks). However, crawler cranes are space-consuming and have extremely poor flexibility, making them completely unsuitable for indoor use. The full rotation of the boom indoors would inevitably cause serious damage (considering the core tube, connecting beams, and supporting scaffolding in the theater of this invention, all of which interfere with the boom's rotation, damage caused by the boom is unavoidable). Conventional hoisting methods are insufficient for this task. Summary of the Invention

[0007] This invention provides a construction method for a multi-system integrated theater catwalk system with a giant stage frame.

[0008] The technical problem to be solved is that the bridle level and rectangular platform frame limit the height of the performance space, affecting the indoor performance of acrobatic shows, and the bridle level is difficult to construct.

[0009] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a construction method for a multi-system integrated theater catwalk system with a giant stage frame, used for installing performance equipment and accommodating performers in an indoor theater with a proscenium stage and load-bearing enclosure. The proscenium stage includes a rectangular stage frame that serves as a "fourth wall" between the performance area and the audience area. The catwalk system includes multiple catwalk layers suspended below the building. Adjacent catwalk layers are connected vertically by ladders. Except for the top catwalk layer, each catwalk layer has vertically aligned openings located directly above the performance area. The rectangular platform frame includes a platform frame core tube vertically arranged on the left and right sides of the rectangular platform frame and a platform frame crossbeam horizontally arranged on the top of the rectangular platform frame. The two platform frame core tubes are fixedly connected through the platform frame crossbeam and are respectively fixedly connected to the load-bearing enclosure through the core tube stabilizing grid. The platform frame core tube is equipped with a staircase and elevator that are connected vertically, and the outer wall of the platform frame core tube is provided with doors leading to each level of the walkway. The construction method of the catwalk system includes the following steps: Step 1: Construct the core tube of the platform frame, and then construct the crossbeam connecting the two core tubes of the platform frame; Step 2: Construct a load-bearing enclosure, the top of which has a reinforced beam mesh for providing installation points for hoisting equipment; Step 3: Assemble each walkway layer in sections on the ground. Using hoisting equipment suspended below the reinforcing beam grid, hoist the walkway layers layer by layer from top to bottom to the installation height and assemble them at the installation height. Each walkway layer is connected to the upper structure through hanging columns and to the same layer structure through insert rods. Step 4: Connect the core tube of the platform frame to the load-bearing enclosure using the core tube stabilizing grid. The core tube stabilizing grid consists of one or more layers of steel beam grid. The core tube stabilizing grid is located below the walkway layer, connected to the beams of the walkway layer above it through hanging columns, and connected to the load-bearing enclosure through inclined hanging columns and embedded rods. Step 5: Transfer materials from the staircases and elevators inside the core tube to each walkway level and construct the secondary structure.

[0010] Furthermore, in step three, the sections of the walkway are hoisted to the installation height using hand chain hoists. Multiple independent slings are evenly tied to each section, with each sling corresponding to a hand chain hoist. The fixed pulleys of each hand chain hoist are suspended from the reinforcing beam net, and the other end of the sling is held by the construction workers on the ground. All construction workers work together to hoist the section while keeping it horizontal, and each construction worker can adjust the force applied to the sling according to the posture of the section during hoisting.

[0011] Furthermore, the catwalk layers, from bottom to top, are a lighting catwalk layer for installing lighting equipment, an interactive catwalk layer for performers to interact with the audience, a servo catwalk layer for backstage staff to interact with performers, and a top catwalk layer for suspending the lower catwalk layers and serving as the ceiling of the performance area. The lighting catwalk layer consists of two circular catwalks, one located in the center of the audience area and the other located around the perimeter of the performance area. The interactive catwalk layer includes multiple circular catwalks arranged around the center of the building. The circular catwalks of the interactive catwalk layer are concentric circles and have openings for hiding places in the performance area. The circular catwalks are connected by connecting catwalks arranged radially around the center of the concentric circles. One of the circular catwalks that is not blocked by the lighting catwalk layer has a sliding rail at its bottom for suspending performers or performance equipment to move above the audience area. The servo horse track layer includes a ring-shaped horse track located in the center of the audience area and a platform-shaped horse track surrounding the performance area, with the two parts of the horse track connected to form a platform; The top bridle level is a rectangular platform-shaped bridle set directly above the performance area.

[0012] Furthermore, the indoor theater is equipped with a cage-like electromechanical room on the top, which is equipped with ventilation equipment to remove the smoke generated during the performance and the exhaust gas generated by the breathing of people in the building. The top catwalk is located below the electromechanical room and is also used to assist the operation of the electromechanical room. The top catwalk has a steel beam grid that is integrated with the load-bearing enclosure through connecting beams. If there is a beam of the upper level of the catwalk above the hanging column used to suspend the lighting catwalk, interactive catwalk, and servo catwalk, the end of the hanging column is connected to the bottom of the beam of the upper level catwalk; otherwise, it is connected to the top of the building.

[0013] In step three, the electromechanical room is assembled on the ground in one go and then lifted to the installation height by a through jack fixed above the reinforcing beam.

[0014] Furthermore, after the electromechanical room is raised to the installation height, it is connected to the load-bearing enclosure through the hoisting rods and the insert rods. Then, the lifting reaction force of all the through-hole jacks is adjusted simultaneously at 10% intervals, decreasing in sequence. The lifting reaction force of all the through-hole jacks is adjusted to 0 in ten steps to complete the unloading.

[0015] Furthermore, the formwork for the platform frame beam is erected on the ground scaffolding, and the construction workers pour the platform frame beam on the ground scaffolding. Diagonal bracing is installed on the scaffolding uprights at the bottom of the platform frame beam, and the diagonal bracing is distributed radially layer by layer on the scaffolding uprights. The connection between the sections of each catwalk level and the installation of the hanging columns are carried out on the boom truck. After the catwalk level is installed, the high-altitude operations are carried out on the catwalk level.

[0016] Furthermore, the performance area is equipped with a lifting stage, and a stage compartment is located below the performance area. The bottom of the core tube of the stage frame is lower than the bottom of the stage compartment, and a door leading to the stage compartment is opened on the side wall. Stage waiting rooms are provided on the left and right sides of the rectangular stage frame. The roof of the stage waiting room is a core tube stabilizing grid at the bottom layer. The stage waiting room has doors leading to the performance area, the audience area, the stage frame core tube, the outside of the theater, and other buildings adjacent to the theater.

[0017] Furthermore, the stage frame beams are multiple reinforced concrete beams aligned vertically, each beam corresponding to and flush with the corresponding walkway level. Reinforced concrete columns are provided between adjacent beams to act as connectors, forming a beam-column grid. Each walkway level has a steel beam grid, designated as a ring grid, located on the periphery of the performance area. This ring grid is fixedly connected to the load-bearing enclosure and forms a ring structure with the flush reinforced concrete beams to stabilize the stage frame core. The stage frame core is constrained from bottom to top by the floor, the core stabilizing grid, and the ring structure composed of the ring grid and reinforced concrete beams. Furthermore, the circular walkway located in the center of the audience area in the illuminated walkway layer is referred to as the cage bottom walkway. Both the interactive walkway layer and the servo walkway layer have circular walkways aligned vertically with the cage bottom walkway. The hanging posts along the edges of the cage bottom walkway and the two circular walkways above it are aligned vertically, and the aligned hanging posts and the three circular walkways they are in together form a multi-level platform with hanging posts as railings. Ladders are provided between each level of the multi-level platform.

[0018] Compared with existing technologies, the construction method of the multi-system integrated theater catwalk system with a giant stage frame of the present invention has the following advantages: In this invention, a rectangular stage frame is formed by a core tube and stage frame beams, and elevators and stairs leading to each catwalk level are installed inside the core tube, allowing performers to safely and conveniently move up and down the catwalk levels without being restricted by the height of the catwalk levels. At the same time, the slender and exposed core tube in this invention (in core tube steel structure buildings, the core tube is surrounded by a large number of floor slabs, beams, and columns, but not here, and due to space constraints, the cross-section of the core tube here is smaller) is supported by the steel beam grid on the top of the stage waiting room, the stage frame beams, and the steel beam grid at specific locations on the catwalk level. This not only ensures that the core tube is not unstable due to its independent existence (in core tube steel structure buildings, the core tube is inserted into the center of the building and integrated with the entire building, but in this invention, the core tube exists independently of the main building structure), but also that the supporting components themselves can be integrated into the theater (integrated into the stage waiting room, the rectangular stage frame, and the catwalk level respectively), without affecting the theater's visual appeal or occupying additional space. In this invention, a reinforced beam mesh is additionally installed on the top of the load-bearing enclosure as the load-bearing foundation for the hoisting equipment. Multiple hand-operated hoists with fixed pulleys are then suspended below it. A large number of construction workers on the ground operate these independent hand-operated hoists to hoist the walkway layer (each weighing tens of tons) to the installation height in sections. During the hoisting process, the force applied to each sling can be adjusted individually at any time, and the force feedback is very timely (the construction workers can immediately obtain force feedback). This allows for flexible adjustment of the entire hoisting process and prevents any additional damage to the hoisting equipment. By combining the above points, the height of the theater's performance space is significantly increased without sacrificing the stage's versatility and performance effect, and construction can proceed smoothly. Attached Figure Description

[0019] Figure 1 This is a flowchart illustrating a construction method for a multi-system integrated theater catwalk system with a giant stage frame, according to the present invention. Figure 2 A floor plan of a building constructed using a multi-system integrated theater catwalk system with a giant stage frame, according to the present invention. Figure 3 This is an exterior view of the building where the invention is located; Figure 4 This is a schematic diagram of the structure of the lighting catwalk level; Figure 5 This is a schematic diagram of the interactive catwalk level. Figure 6 This is a schematic diagram of the servo driveway layer. Figure 7 This is a schematic diagram of the top catwalk layer; In the diagram, 1-performance area, 2-audience area, 31-stage frame core tube, 32-stage frame crossbeam, 4-core tube stabilizing grid, 51-lighting catwalk layer, 52-interactive catwalk layer, 521-sliding rail, 53-servo catwalk layer, 54-top catwalk layer. Detailed Implementation

[0020] Taking the China Acrobatic Arts Center, which has applied this invention, as an example, such as... Figure 1-2 As shown, a construction method for a multi-system integrated theater catwalk system with a giant stage frame is used in an indoor theater with a proscenium stage and load-bearing enclosure for the installation of performance equipment and the movement of performers. The proscenium stage includes a rectangular stage frame set between the performance area 1 and the audience area 2, which acts as a "fourth wall". The catwalk system includes multiple catwalk layers suspended below the building. Adjacent catwalk layers are connected vertically by ladders. Except for the top catwalk layer, each catwalk layer has a vertically aligned clearance opening located directly above the performance area 1. Multiple catwalk levels enclose the performance area 1 and the stage frame core tube 31. Although these catwalk levels are not as stable as the floor slabs in a steel structure core tube building, this arrangement allows for the installation of other load-bearing components within the catwalk levels to support the stage frame core tube 31. These load-bearing components can be integrated with the catwalk levels. Furthermore, the close proximity of the catwalk levels to the performance area 1 allows equipment and performers to access the area very easily.

[0021] The rectangular platform frame includes a platform frame core tube 31 vertically arranged on the left and right sides of the rectangular platform frame and a platform frame crossbeam 32 horizontally arranged on the top of the rectangular platform frame. The two platform frame core tubes 31 are fixedly connected through the platform frame crossbeam 32, and are respectively fixedly connected to the load-bearing enclosure through the core tube stabilizing grid 4. The platform frame core tube 31 is provided with a staircase and elevator that connect vertically, and the outer wall of the platform frame core tube 31 is provided with doors leading to each level of the walkway. The stage frame core tube 31 involved in this invention has a length of more than 30 meters above the theater floor and more than 10 meters below the theater floor, plus a section of more than 40 meters. In terms of shape, it is a thin and long structure similar to a chimney. However, since it needs to house elevators and stairs, its structure is the same as that of a conventional core tube. It cannot maintain stability on its own like a chimney. Therefore, a large number of supporting components are required. The core tube stabilization grid is one of the supporting components. Other components are set in the catwalk layer, the stage frame beam 32, and the floor.

[0022] The construction method for the catwalk system includes the following steps: Step 1: Construct the core tube 31 of the platform frame, and then construct the crossbeam 32 of the platform frame to connect the two core tubes 31 of the platform frame; The core tube is a component in a steel core tube structure building. It provides the steel structure with stiffness against lateral forces. The core tube has a large length-to-diameter ratio and relies on the support of other structural elements to ensure stability. The core tube is a reinforced concrete structure and requires a concrete pump for pouring; therefore, it must be constructed before the building is topped out. The same applies to the abutment frame beam 32. Note that pre-installed reinforcing bars should be provided in the core tube before pouring to connect with the reinforcing cage of the abutment frame beam 32.

[0023] Step 2: Construct a load-bearing enclosure, with a reinforced beam mesh on top to provide installation points for hoisting equipment; like Figure 3 As shown, the load-bearing, floor-standing steel dome here is a fusion of the enclosure and load-bearing structures. An additional ring-shaped steel beam grid is installed at the top as a reinforcing beam network. This reinforcing beam network not only serves as installation points for subsequent hoisting equipment but also helps to finish the building's structure. The dome's steel frame is integrated with the core tube stabilizing grid 4 and the hanging columns used to suspend the catwalk level.

[0024] Step 3: Assemble each walkway layer in sections on the ground. Using hoisting equipment suspended below the reinforcing beam grid, hoist the walkway layers layer by layer from top to bottom to the installation height and assemble them at the installation height. Each walkway layer is connected to the upper structure through hanging columns and to the same layer structure through insert rods. Each section of the catwalk level must be self-sustaining, preventing deformation or exceeding the maximum lifting capacity of the hoisting equipment due to its large size; at the same time, it cannot be too small, as this would affect construction efficiency. The self-weight of each section should ideally be around 20 tons, and preferably constitute a complete area of ​​the catwalk level.

[0025] Step 4: Connect the core tube 31 of the platform frame to the load-bearing enclosure using the core tube stabilizing grid 4. The core tube stabilizing grid 4 is one or more layers of steel beam grid. The core tube stabilizing grid 4 is located below the walkway layer, connected to the beams of the walkway layer above through the hanging columns, and connected to the load-bearing enclosure through the inclined hanging columns and the embedded rods. The core tube is supported here, and the core tube stabilization grid 4 itself is also the roof of the stage waiting room. After entering the stage waiting room, you can quickly reach the performance position by using the core tube next to it.

[0026] Step 5: Transfer materials from the staircases and elevators inside the core tube to each walkway level and construct the secondary structure.

[0027] One of the two main functions of the core tube itself is to allow performers and equipment to reach high altitudes (the other function is to form an extremely high platform frame), and of course it can also be used to transport construction materials.

[0028] In step three, the sections of the walkway are hoisted to the installation height using hand chain hoists. Multiple independent slings are evenly tied to each section, with each sling corresponding to a hand chain hoist. The fixed pulleys of each hand chain hoist are suspended from the reinforcing beam net, and the other end of the sling is held by the construction workers on the ground. All construction workers work together to hoist the section and keep it horizontal as it rises. Each construction worker can adjust the force applied to the sling according to the posture of the section during hoisting.

[0029] The reason for using hand chain hoists instead of electric hoists is that the force applied by a hand chain hoist comes entirely from the construction worker, who can adjust the applied force at any time based on the posture of the components being hoisted and the feedback from the sling in their hand. This allows for extremely flexible adjustments, ensuring no collisions and stable hoisting posture. Using multiple independent hand chain hoists serves two purposes: firstly, to ensure flexible and precise adjustments, and secondly, to ensure sufficient lifting capacity (typically, the maximum lifting capacity of a single hand chain hoist is only 5 tons).

[0030] like Figure 4-7As shown, the catwalk layers from bottom to top are: a lighting catwalk layer 51 for installing lighting equipment, an interactive catwalk layer 52 for performers to interact with the audience, a servo catwalk layer 53 for backstage staff to interact with performers, and a top catwalk layer 54 for suspending the catwalk layers below and serving as the ceiling of the performance area 1. Here, the shape and location of the horse runway are used to determine its appropriate function. In actual use, the distinction is not so strict. Various performance equipment are set on different horse runways according to the needs of the performance, and backstage staff and performers are not restricted by the horse runway.

[0031] The lighting catwalk level 51 consists of two circular catwalks, one located in the center of the audience area 2 and the other on the periphery of the performance area 1. This level is the lowest to ensure that the lighting is unobstructed, and different lighting fixtures are installed on the two circular catwalks.

[0032] The interactive catwalk layer 52 includes multiple circular catwalks arranged around the center of the building. The circular catwalks of the interactive catwalk layer 52 are concentric circles and have openings for hiding places in the performance area 1. The circular catwalks are connected by connecting catwalks arranged radially around the center of the concentric circles. One of the circular catwalks that is not blocked by the lighting catwalk layer 51 has a sliding rail 521 at its bottom for suspending performers or performance equipment to move above the audience area 2. Many acrobatic acts require the performer to pass above the audience. These acts are typically performed outdoors using cranes, but here, a sliding rail 521 is used, which is more stable and safer. Besides these acrobatic movements, performance equipment that needs to move during the performance can also be mounted on the sliding rail 521. In this embodiment, one sliding rail 521 is installed. If needed, sliding rails 521 can be installed on multiple circular walkways in the future. In this embodiment, the interactive walkway layer 52 has three circular walkways that are not obstructed by the lighting walkway layer 51 below, and each walkway also has sufficient load-bearing capacity.

[0033] The servo horse track layer 53 includes a ring-shaped horse track located in the center of the audience area 2 and a platform-shaped horse track surrounding the performance area 1, with the two parts of the horse track connected to form a platform; The top catwalk layer 54 is a rectangular platform catwalk located directly above the performance area 1. Among the three catwalk layers below the top catwalk layer 54, the performance area 1 is surrounded by a ring catwalk, which is sufficient to meet the needs. Here, the top catwalk layer 54 is used to provide attachment points for the hanging columns of the catwalk layers below, because the electromechanical room above the top catwalk layer 54 would block the hanging columns.

[0034] The indoor theater has a cage-like electromechanical room on the top. The electromechanical room is equipped with ventilation equipment to remove the smoke generated during the performance and the exhaust gas generated by the breathing of people in the building. The top catwalk layer 54 is located below the electromechanical room and also assists in the operation of the electromechanical room. The top catwalk layer 54 has a steel beam grid that is integrated with the load-bearing enclosure through connecting beams. If there is a beam of the upper level of the catwalk above the hanging column used to suspend the lighting catwalk level 51, interactive catwalk level 52, and servo catwalk level 53, the end of the hanging column is connected to the bottom of the beam of the upper level catwalk level; otherwise, it is connected to the top of the building.

[0035] In step three, the electromechanical room is assembled on the ground in one go and then lifted to the installation height by a through jack fixed above the reinforcing beam.

[0036] After the electromechanical room is raised to the installation height, it is connected to the load-bearing enclosure through the hoisting rods and the insert rods. Then, the lifting reaction force of all the through jacks is adjusted at 10% intervals, decreasing in sequence. The lifting reaction force of all the through jacks is adjusted to 0 in ten steps to complete the unloading.

[0037] Unlike the walkway level, the machine and electrical room here cannot be assembled in sections; it must be formed in one piece. The required lifting weight is too large (over 100 tons), making manual hoisting unsuitable. Fortunately, its area is quite small, minimizing the risk of collisions during hoisting. Therefore, multiple through-hole jacks can be used to lift it into place. Through-hole jacks offer both heavy lifting capacity and stability.

[0038] The formwork for the platform frame beam 32 is erected on the ground scaffolding. Construction workers pour the concrete for the platform frame beam 32 on the ground scaffolding. Diagonal bracing is installed on the scaffolding uprights at the bottom of the platform frame beam 32. The diagonal bracing is distributed radially layer by layer on the scaffolding uprights. The connection between the sections of each catwalk level and the installation of the hanging columns are carried out on the boom truck. After the catwalk level is installed, the high-altitude operations are carried out on the catwalk level.

[0039] The performance area 1 is equipped with a lift stage, and a stage compartment is located below the performance area 1. The bottom of the stage frame core tube 31 is lower than the bottom of the stage compartment, and the side wall has a door leading to the stage compartment. In other words, the stage frame core tube 31 here is equivalent to a bridge connecting the underground stage compartment, the performance area 1 on the ground, the audience area 2, and the catwalk level in the air.

[0040] The rectangular stage frame has stage waiting rooms on both sides. The roof of the stage waiting rooms is the lowest core tube stabilizing grid 4, on which a concrete slab is laid. Multiple steel columns are attached to the edges, and glass panels are installed between the steel columns to form transparent rooms for use as stage waiting rooms. Each transparent room is surrounded by a retractable cover. The stage waiting rooms allow performers to touch up their makeup, memorize lines, and adjust performance equipment. The transparent design facilitates observation of the external environment and allows for interaction with the outside world when necessary.

[0041] The stage waiting area has doors leading to performance area 1, audience area 2, stage frame core tube 31, outside the theater, and other buildings adjacent to the theater. This opens up more space and connects these spaces to the catwalk level via the stage waiting area, saving time for performers and backstage staff, and facilitating the handling of various emergencies such as performers being late or equipment malfunctions.

[0042] The platform frame beam 32 consists of multiple reinforced concrete beams aligned vertically. Each reinforced concrete beam corresponds to one of the walkway layers and is flush with the corresponding walkway layer. Reinforced concrete columns are set between adjacent reinforced concrete beams to serve as connections. The reinforced concrete beams and reinforced concrete columns are combined to form a beam-column grid. The reinforced concrete columns are set here to overcome the problem of downward deflection of the reinforced concrete beams when the span is large.

[0043] Each bridle level has a steel beam grid, referred to as a ring grid, located on the outer perimeter of the performance area 1. The ring grid is fixedly connected to the load-bearing enclosure and forms a ring structure with the flush reinforced concrete beams to stabilize the core tube 31 of the stage frame. The core tube 31 of the stage frame is constrained from bottom to top by the floor, the core tube stabilizing grid 4, and the ring structure composed of the ring grid and the reinforced concrete beams. These restraining components act like the wall ties of a tower crane, restraining the core tube 31 of the platform frame at regular intervals. The ring-shaped grid here is itself part of the steel beams of the catwalk level, only presented as a grid. Where the ring-shaped grid is close to the main structure of the theater, it can be connected to the main structure using connecting beams, ensuring the stability of the catwalk level even when suspended by hinged columns. In this embodiment, the core tube stabilizing grid 4 is arranged in three layers at intervals. Without the ring-shaped grid, several additional layers of core tube stabilizing grid 4 would need to be set above the core tube stabilizing grid 4 in this embodiment.

[0044] The circular walkway located in the center of audience area 2 within the lighting walkway layer 51 is referred to as the cage bottom walkway. Both the interactive walkway layer 52 and the servo walkway layer 53 have circular walkways aligned vertically with the cage bottom walkway. The hanging posts along the edges of the cage bottom walkway and the two circular walkways above it are aligned vertically, and these aligned posts, together with the three circular walkways they occupy, form a multi-level platform with the hanging posts serving as railings. Ladders are provided between each level of the multi-level platform. This area has a large amount of performance equipment and a high volume of personnel movement; therefore, the above structure was designed to further facilitate personnel movement and transfer.

[0045] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A construction method for a multi-system integrated theater catwalk system with a giant stage frame, used for installing performance equipment and accommodating performers in an indoor theater with a proscenium stage and load-bearing enclosure, wherein the proscenium stage includes a rectangular stage frame positioned between the performance area (1) and the audience area (2), serving as a "fourth wall", characterized in that: The horse track system includes multiple horse track layers suspended below the building. Adjacent horse track layers are connected by ladders. Except for the top horse track layer, each horse track layer has a vertically aligned clearance opening located directly above the performance area (1). The rectangular platform frame includes a platform frame core tube (31) vertically arranged on the left and right sides of the rectangular platform frame and a platform frame crossbeam (32) horizontally arranged on the top of the rectangular platform frame. The two platform frame core tubes (31) are fixedly connected through the platform frame crossbeam (32) and are respectively fixedly connected to the load-bearing enclosure through the core tube stabilizing grid (4). The platform frame core tube (31) is provided with a staircase and elevator that are connected vertically, and the outer wall of the platform frame core tube (31) is provided with doors leading to each level of the walkway. The construction method of the catwalk system includes the following steps: Step 1: Construct the core tube of the platform frame (31), and then construct the crossbeam of the platform frame (32) to connect the two core tubes of the platform frame (31); Step 2: Construct a load-bearing enclosure, the top of which has a reinforced beam mesh for providing installation points for hoisting equipment; Step 3: Assemble each walkway layer in sections on the ground. Using hoisting equipment suspended below the reinforcing beam grid, hoist the walkway layers layer by layer from top to bottom to the installation height and assemble them at the installation height. Each walkway layer is connected to the upper structure through hanging columns and to the same layer structure through insert rods. Step 4: Connect the core tube (31) of the platform frame to the load-bearing enclosure using the core tube stabilizing grid (4). The core tube stabilizing grid (4) is one or more layers of steel beam grid. The core tube stabilizing grid (4) is located below the walkway layer, connected to the beam of the walkway layer above by the hanging column, and connected to the load-bearing enclosure by the inclined hanging column and the embedded rod. Step 5: Transfer materials from the staircases and elevators inside the core tube to each catwalk level, and construct the secondary structure; The catwalk layers, from bottom to top, are a lighting catwalk layer (51) for installing lighting equipment, an interactive catwalk layer (52) for performers to interact with the audience, a servo catwalk layer (53) for backstage staff to interact with performers, and a top catwalk layer (54) for suspending the catwalk layers below and serving as the ceiling of the performance area (1). The lighted catwalk layer (51) consists of two circular catwalks located at the center of the audience area (2) and at the periphery of the performance area (1), respectively. The interactive catwalk layer (52) includes multiple ring catwalks arranged around the center of the building. The ring catwalks of the interactive catwalk layer (52) are concentric circles and have openings for hiding places in the performance area (1). The ring catwalks are connected by connecting catwalks arranged radially around the center of the concentric circles. One of the ring catwalks that is not blocked by the lighting catwalk layer (51) has a sliding rail (521) at the bottom for suspending performers or performance equipment to move above the audience area (2). The servo horse track layer (53) includes a ring-shaped horse track set in the center of the audience area (2) and a platform-shaped horse track set around the performance area (1), with the two parts of the horse track connected to form a platform; The top bridle level (54) is a rectangular platform-shaped bridle set directly above the performance area (1); The platform frame beam (32) consists of multiple reinforced concrete beams aligned vertically. Each reinforced concrete beam corresponds to one of the walkway layers and is flush with the corresponding walkway layer. Reinforced concrete columns are provided between adjacent reinforced concrete beams to serve as a connection. The reinforced concrete beams and reinforced concrete columns are combined to form a beam-column grid. Each walkway layer has a steel beam grid called a ring grid in the outer perimeter of the performance area (1). The ring grid is fixedly connected to the load-bearing enclosure and forms a ring structure with the flush reinforced concrete beams to stabilize the platform frame core tube (31). The platform frame core tube (31) is constrained from bottom to top by the floor, the core tube stabilizing grid (4), and the ring structure composed of the ring grid and the reinforced concrete beams.

2. The construction method of a multi-system integrated theater catwalk system with a giant stage frame according to claim 1, characterized in that: In step three, the sections of the walkway are hoisted to the installation height using hand chain hoists. Multiple independent slings are evenly tied to each section, with each sling corresponding to a hand chain hoist. The fixed pulleys of each hand chain hoist are suspended from the reinforcing beam net, and the other end of the sling is held by the construction workers on the ground. All construction workers work together to hoist the section and keep it horizontal as it rises. Each construction worker can adjust the force applied to the sling according to the posture of the section during hoisting.

3. The construction method of a multi-system integrated theater catwalk system with a giant stage frame according to claim 1, characterized in that: The indoor theater is equipped with a cage-like electromechanical room at the top. The electromechanical room is equipped with ventilation equipment to remove the smoke generated during the performance and the exhaust gas generated by the breathing of people in the building. The top catwalk layer (54) is located below the electromechanical room and is also used to assist the operation of the electromechanical room. The top catwalk layer (54) has a steel beam grid that is integrated with the load-bearing enclosure through connecting beams. If there is a beam of the upper level of the catwalk above the hanging column used to suspend the lighting catwalk (51), interactive catwalk (52), and servo catwalk (53), the end of the hanging column is connected to the bottom of the beam of the upper level catwalk; otherwise, it is connected to the top of the building. In step three, the electromechanical room is assembled on the ground in one go and then lifted to the installation height by a through jack fixed above the reinforcing beam.

4. The construction method of a multi-system integrated theater catwalk system with a giant stage frame according to claim 3, characterized in that: After the electromechanical room is raised to the installation height, it is connected to the load-bearing enclosure through the hoisting rods and the insert rods. Then, the lifting reaction force of all the through jacks is adjusted at 10% intervals, decreasing in sequence. The lifting reaction force of all the through jacks is adjusted to 0 in ten steps to complete the unloading.

5. The construction method of a multi-system integrated theater catwalk system with a giant stage frame according to claim 1, characterized in that: The formwork of the platform frame beam (32) is erected on the ground scaffold. The construction workers pour the platform frame beam (32) on the ground scaffold. The scaffold uprights at the bottom of the platform frame beam (32) are equipped with diagonal braces. The diagonal braces are distributed radially layer by layer on the scaffold uprights. The connection between the sections of each catwalk level and the installation of the hanging columns are carried out on the boom truck. After the catwalk level is installed, the high-altitude operations are carried out on the catwalk level.

6. The construction method of a multi-system integrated theater catwalk system with a giant stage frame according to claim 1, characterized in that: The performance area (1) is equipped with a lifting stage, and a stage compartment is provided below the performance area (1). The bottom of the core tube (31) of the stage frame is lower than the bottom of the stage compartment, and a door leading to the stage compartment is opened on the side wall. Stage waiting rooms are provided on the left and right sides of the rectangular stage frame. The roof of the stage waiting room is the bottom core tube stable grid (4). The stage waiting room has doors leading to the performance area (1), the audience area (2), the stage frame core tube (31), outside the theater, and other buildings adjacent to the theater.

7. The construction method of a multi-system integrated theater catwalk system with a giant stage frame according to claim 3, characterized in that: The circular walkway located in the center of the audience area (2) in the lighted walkway layer (51) is called the cage bottom walkway. The interactive walkway layer (52) and the servo walkway layer (53) both have circular walkways aligned vertically with the cage bottom walkway. The hanging posts along the edges of the cage bottom walkway and the two circular walkways above are aligned vertically, and the aligned hanging posts and the three circular walkways they are in together form a multi-level platform with hanging posts as railings. Ladders are provided between each level of the multi-level platform.

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