A construction method of a large-span corridor arch rib and a construction method of a large-span corridor

Abstract

The application relates to the technical field of building corridor construction, in particular to a large-span corridor arch rib construction method and a large-span corridor construction method. The large-span corridor arch rib construction method fully utilizes the strength and rigidity of the support cylinder on both sides of the corridor to tension the temporary cable, and the single-section arch rib is stably connected to the arch foot through the temporary cable, so that the unstable connection of the single-section arch rib and the arch foot is avoided, arch rib installation difficulty is avoided, the installation period of the large-span corridor is affected, further, the single-section arch rib is assembled through the temporary cable, arch rib construction and installation work is completed, the construction process of arch first and beam later is achieved, and when the subsequent large-span corridor is installed, cast-in-place support or a bed frame does not need to be erected at the bottom of the corridor, the construction period is effectively saved, the use of steel structures is reduced, the cost is saved, the influence of ground passage foundation deformation on the corridor structure is reduced, and the interference of the corridor construction on the ground passage is reduced.

Description

Technical Field

[0001] This invention relates to the field of architectural corridor construction technology, and particularly to a construction method for the arch ribs of a long-span corridor and a construction method for a long-span corridor. Background Technology

[0002] In modern architecture, a connecting corridor is defined as a complex structural system for high-rise buildings. It generally refers to an elevated connecting structure that links two or more high-rise buildings to meet the requirements of architectural design and functionality. Connecting corridors can be arranged singly or in multiples along the vertical direction of a building.

[0003] The connecting corridor serves two main purposes: firstly, it facilitates communication between the two towers, providing excellent natural lighting and expansive views, making it suitable for use as a sightseeing promenade or a casual café; secondly, it enhances the building's distinctive appearance and creates a more harmonious architectural atmosphere.

[0004] Currently, most large-span connecting corridors require the erection of scaffolding for installation. Erecting scaffolding not only takes a lot of time, but also requires a large amount of steel structure, resulting in high costs. In addition, erecting scaffolding will occupy a large area of ​​ground passage, affecting traffic flow. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of the prior art by providing a construction method for a long-span connecting corridor arch rib and a construction method for a long-span connecting corridor, enabling rapid and convenient construction operations without significantly impacting ground traffic.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solution:

[0007] A construction method for a long-span connecting corridor arch rib, comprising a support cylinder and an arch rib, wherein the support cylinder is a concrete structure and the arch rib comprises multiple single-section arch ribs, comprising the following steps:

[0008] Step S1: Construct the support cylinders on both sides and install arch feet on both support cylinders;

[0009] Step S2: Connect a single arch rib to the arch foot. A temporary cable is connected to the end of the single arch rib away from the support cylinder. The temporary cable is connected to the support cylinder and is located above the corresponding arch foot.

[0010] Step S3: Assemble the remaining single arch ribs from both sides inwards. The end of each single arch rib near the support cylinder is connected to the adjacent installed single arch rib. The other end of at least one single arch rib is connected to the support cylinder through the temporary cable to complete the overall construction of the arch rib.

[0011] Step S4: Pour concrete into the interior of the arch rib and remove the temporary cable.

[0012] This invention discloses a construction method for a long-span connecting corridor arch rib. It fully utilizes the strength and rigidity of the support cylinders on both sides of the connecting corridor to tension temporary cables. One end of each single-section arch rib near the support cylinder is connected to an adjacent installed single-section arch rib. The other end of at least one single-section arch rib is connected to the support cylinder via the temporary cable. This forms an approximately triangular, stable structure with the temporary cable, support cylinder, and installed single-section arch ribs. This ensures that the single-section arch ribs are securely connected to the arch foot, avoiding instability in the connection between the single-section arch rib and the arch foot, which would otherwise lead to difficulties in arch rib installation and affect the long span. To further shorten the installation period of the connecting corridor, temporary cables are used to assemble individual arch ribs, completing the construction and installation of the arch ribs. This achieves the construction process of "arch first, beam later," providing hoisting support for the subsequent installation of the connecting corridor. Consequently, when installing large-span connecting corridors, the arch ribs serve as the hoisting force support for the large-span connecting corridors, eliminating the need to erect cast-in-place supports or formwork at the bottom of the connecting corridor. This effectively saves construction time, reduces the use of steel structures, and achieves cost savings. At the same time, it reduces the impact of ground foundation deformation on the connecting corridor structure and minimizes interference with the ground passage during the construction of the connecting corridor.

[0013] The construction method for a large-span connecting corridor arch rib described herein involves connecting at least one single arch rib to the support cylinder via a temporary cable during the installation of the remaining single arch rib sections. The single arch rib section is installed using the temporary cable, which connects it to the support cylinder. Once the single arch rib section is securely connected to the support cylinder via the temporary cable, the crane can be released. Subsequent connection operations between single arch rib sections no longer require crane assistance, effectively reducing crane usage time. This simplifies the arch rib installation process while saving on machinery usage costs, thereby shortening the overall installation cycle of the arch rib.

[0014] The present invention describes a construction method for a long-span connecting corridor arch rib. When there are two or more single arch ribs, when constructing the second single arch rib, the temporary cable of the first single arch rib will play a role in stabilizing the second single arch rib. Furthermore, each single arch rib can be connected to the support cylinder through a temporary cable, so that the temporary cable plays a stabilizing role for all the installed single arch ribs, thereby making the single arch ribs more solid after being assembled into a whole, and also making the arch rib assembly construction safer.

[0015] The present invention describes a construction method for a long-span connecting corridor arch rib. By pouring concrete into the arch rib, the rigidity of the arch rib is improved, making the arch rib more stable on the support cylinder and facilitating the installation of subsequent components of the long-span connecting corridor.

[0016] Preferably, in step S2: a fixed pulley is provided on the upper part of the single-section arch rib, and one end of the temporary cable passes around the fixed pulley and is vertically connected to the single-section arch rib. The anchoring direction of the temporary cable is adjusted by the fixed pulley so that the anchoring direction of the temporary cable is perpendicular to the arch rib, so that the tension of the temporary cable can act vertically on the arch rib. This makes the local vertical bending resistance of the arch rib better controlled. At the same time, because the temporary cable is vertically connected to the arch rib, the temporary cable can avoid slippage on the arch rib when fixing the arch rib, making it easier to tighten the arch rib and also avoiding wear caused by slippage, so as to achieve a better tightening effect on the arch rib. Furthermore, since the contact point between the arch rib and the temporary cable needs to be reinforced, the fixed pulley makes the temporary cable perpendicular to the arch rib, so only a stiffening plate needs to be added in the radial direction of the arch rib, reducing the workload and difficulty of reinforcement.

[0017] Preferably, in step S4: a pouring hole is provided at the top of the arch rib. The pouring hole is used to pour concrete into the interior of the arch rib. Since the pouring hole is located at the top of the arch rib, when concrete is poured into the interior of the arch rib through the pouring hole, the concrete is more easily injected into the interior of the arch rib, and the interior of the arch rib can be filled with concrete to the greatest extent.

[0018] Preferably, a reserved channel is provided on the support cylinder, and an anchoring end is provided at the end of the reserved channel away from the single arch rib. One end of the temporary cable is connected to the single arch rib, and the other end of the temporary cable passes through the reserved channel and is connected to the anchoring end.

[0019] Preferably, temporary ear plates are provided at both ends of the single-section arch rib, and a temporary ear plate is also provided at the end of the arch foot near the temporary arch rib. The temporary ear plates on the arch foot are connected to the temporary ear plates on the single-section arch rib, thereby connecting the arch foot and the single-section arch rib.

[0020] Preferably, the temporary ear plate on the single-section arch rib is connected to the temporary ear plate on the adjacent installed single-section arch rib, thereby connecting the single-section arch rib to the adjacent installed single-section arch rib.

[0021] Preferably, the temporary ear plate is provided with bolt holes, and adjacent temporary ear plates are connected by bolts.

[0022] Preferably, after the single-section arch rib is connected to the arch foot or to an adjacent installed single-section arch rib, the temporary cable is tensioned to 60% to 65% of its tension force, and then the truck crane is removed. After the single-section arch rib is fixedly connected to the arch foot or to an adjacent installed single-section arch rib, the temporary cable is tensioned to 95% to 100% of its tension force.

[0023] Preferably, when hoisting the single-section arch rib, the assembly angle of the single-section arch rib and the height of both sides of the single-section arch rib are adjusted at low altitude first, and then the single-section arch rib is assembled at high altitude.

[0024] A construction method for a long-span connecting corridor, based on the construction method for the arch rib of a long-span connecting corridor described in this application, further includes the following steps:

[0025] Step A: Install the under-arch hanging columns and arch bottom tie rods in sequence, and perform the initial prestressing tensioning of the large-span connecting corridor;

[0026] Step B: Install the floors and pour concrete, then perform the final prestressing tensioning of the large-span connecting corridor.

[0027] The present invention discloses a construction method for a large-span connecting corridor. This method involves installing the arch ribs using a combination of support cylinders and temporary cables. After the arch ribs are installed, other components of the large-span connecting corridor are then installed, thus achieving a "arch first, beam later" construction process. Because this method uses an arch-first, beam-later approach, the bottom of the connecting corridor does not require the erection of cast-in-place supports or formwork during construction, effectively saving construction time and reducing the use of steel structures to achieve cost savings. Furthermore, since no supports or formwork are needed, installation is carried out using only a mobile crane, minimizing the occupation of ground access areas. This not only reduces the impact of ground foundation deformation on the connecting corridor structure but also reduces interference with ground access areas during construction.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0029] 1. The construction method for a long-span connecting corridor arch rib described in this invention fully utilizes the strength and rigidity of the support cylinders on both sides of the connecting corridor to tension temporary cables. One end of each single-section arch rib near the support cylinder is connected to an adjacent installed single-section arch rib, and the other end of at least one single-section arch rib is connected to the support cylinder via the temporary cable. This forms an approximately triangular stable structure with the temporary cable, support cylinder, and installed single-section arch ribs, ensuring a stable connection between the single-section arch rib and the arch foot. This avoids difficulties in arch rib installation due to unstable connection between the single-section arch rib and the arch foot, which could have a significant impact. To further shorten the construction period of the span connecting corridor, temporary cables are used to assemble individual arch ribs, thus completing the construction and installation of the arch ribs. This achieves the construction process of "arch first, beam later," providing hoisting support for the subsequent installation of the connecting corridor. Consequently, when installing large-span connecting corridors, the arch ribs serve as the hoisting force support for the large-span connecting corridors, eliminating the need to erect cast-in-place supports or formwork at the bottom of the connecting corridor. This effectively saves construction time, reduces the use of steel structures, and achieves cost savings. At the same time, it reduces the impact of ground foundation deformation on the connecting corridor structure and minimizes interference with the ground passage during the construction of the connecting corridor.

[0030] 2. The construction method for a large-span connecting corridor arch rib as described in this method involves, when installing the remaining single arch rib sections, connecting the other end of at least one single arch rib section to the support cylinder via the temporary cable. The single arch rib section is installed using the temporary cable, which connects the arch rib to the support cylinder. Once the single arch rib section is securely connected to the support cylinder via the temporary cable, the crane can be released. Subsequent connection operations between single arch rib sections no longer require crane assistance, thus effectively reducing crane usage time. This saves on machinery usage costs while simplifying the arch rib installation steps, thereby shortening the overall installation cycle of the arch rib.

[0031] 3. The construction method of a large-span connecting corridor arch rib described in this invention, when there are two or more single arch ribs, when constructing the second single arch rib, the temporary cable of the first single arch rib will play a role in stabilizing the second single arch rib. Furthermore, each single arch rib can be connected to the support cylinder through a temporary cable, so that the temporary cable plays a stabilizing role on all the installed single arch ribs, thereby making the single arch ribs more solid after being assembled into a whole, and also making the arch rib assembly construction safer.

[0032] 4. The construction method of the arch rib of the long-span corridor described in this invention improves the rigidity of the arch rib by pouring concrete into the interior of the arch rib, making the arch rib more stable on the support cylinder and facilitating the installation of subsequent components of the long-span corridor.

[0033] 5. The construction method for a large-span connecting corridor described in this invention involves installing the arch ribs through the cooperation of the support cylinder and temporary cables. After the arch ribs are installed, other components of the large-span connecting corridor are then installed, thus realizing the construction process of arch first and beam later. Because the construction method of the large-span connecting corridor described in this invention adopts the arch first and beam later construction method, there is no need to erect cast-in-place scaffolding or formwork at the bottom of the connecting corridor during construction, which can effectively save the construction period and reduce the use of steel structure to achieve the purpose of saving costs. At the same time, since there is no need to erect scaffolding or formwork, and only mobile cranes are used for installation, there is no need to occupy a large area of ​​ground passage. This not only reduces the impact of ground passage foundation deformation on the connecting corridor structure, but also reduces the interference of the connecting corridor construction on the ground passage. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of a construction method for a long-span connecting corridor according to the present invention. Figure 1 .

[0035] Figure 2 yes Figure 1 A magnified view of part A.

[0036] Figure 3 This is a schematic diagram of a construction method for a long-span connecting corridor according to the present invention. Figure 2 .

[0037] Figure 4 yes Figure 3 A magnified view of section B.

[0038] Figure 5 yes Figure 3 A magnified view of a portion of point C.

[0039] Figure 6 This is a schematic diagram of a construction method for a long-span connecting corridor according to the present invention. Figure 3 .

[0040] Figure 7 This is a schematic diagram of a construction method for a long-span connecting corridor according to the present invention. Figure 4 .

[0041] Figure 8 yes Figure 7 A magnified view of a portion of point D.

[0042] Figure 9 This is a schematic diagram of a construction method for a long-span connecting corridor according to the present invention. Figure 5 .

[0043] Figure 10 yes Figure 9 A magnified view of a portion at point E.

[0044] Figure 11 yes Figure 9 A magnified view of a portion at point F.

[0045] Figure 12 This is a schematic diagram of a construction method for a long-span connecting corridor according to the present invention. Figure 6 .

[0046] Figure 13 This is a schematic diagram of a construction method for a long-span connecting corridor according to the present invention. Figure 7 .

[0047] Figure 14 This is a schematic diagram of the temporary ear plate on the arch rib.

[0048] Figure 15 This is a schematic diagram of a single-section arch rib structure.

[0049] The markings in the diagram are: 1-support cylinder, 2-arch foot, 3-arch rib, 31-single arch rib, 301-single arch rib, 32-pouring hole, 33-connecting section, 4-temporary cable, 5-under-arch hanging column, 51-vertical steel strand, 52-connecting node, 6-arch bottom tie rod, 61-horizontal steel strand, 7-floor, 8-fixed pulley, 9-flange, 10-reserved duct, 11-anchoring end, 12-temporary ear plate, 13-horizontal bracing, 14-sling. Detailed Implementation

[0050] The present invention will now be described in further detail with reference to specific embodiments. However, this should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0051] Example 1

[0052] like Figures 1-8 The construction method of a large-span connecting corridor arch rib described in this embodiment includes a support cylinder 1 and an arch rib 3. The support cylinder 1 is a large concrete structure, and the arch rib 3 includes multiple single-section arch ribs 31. The method includes the following steps:

[0053] Step S1: As Figure 1 As shown, the support cylinder 1 on both sides is constructed, and arch feet 2 are set on both support cylinder 1. The arch feet 2 are located on the inner side of the support cylinder 1, wherein the side of the support cylinder 1 closer to the other support cylinder 1 is the inner side.

[0054] Step S2: As Figure 1 As shown, a truck crane is used to lift the single arch rib 31 and install it on the arch foot 2. The end of the single arch rib 31 away from the support cylinder 1 is connected to a temporary cable 4. The end of the temporary cable 4 away from the single arch rib 31 is connected to the support cylinder 1, and the temporary cable 4 is located above the corresponding arch foot 2. The auxiliary connection of the single arch rib 31 and the arch foot 2 through the temporary cable 4 makes the connection between the single arch rib 31 and the arch foot 2 more stable.

[0055] A preferred method, such as Figure 4 As shown, a fixed pulley 8 is provided at the connection between the temporary cable 4 and the single-section arch rib 31. The temporary cable 4 passes around the fixed pulley 8 and is vertically connected to the single-section arch rib 31. The anchoring direction of the temporary cable 4 is adjusted by the fixed pulley 8 so that the anchoring direction of the temporary cable 4 is perpendicular to the arch rib 3, so that the tension of the temporary cable 4 can act vertically on the arch rib 3. This makes it easier to control the local vertical bending modulus of the arch rib 3. At the same time, because the temporary cable 4 is vertically connected to the arch rib 3, the temporary cable 4 can avoid slippage on the arch rib 3 when fixing the arch rib 3, making it easier to tighten the arch rib 3. It can also avoid wear caused by the temporary cable 4 due to slippage, so as to achieve a better tightening effect on the arch rib 3. Furthermore, since the contact point between the arch rib 3 and the temporary cable 4 needs to be reinforced, the fixed pulley 8 makes the temporary cable 4 perpendicular to the arch rib 3. Only a stiffening plate needs to be added radially to the arch rib 3, which reduces the workload and difficulty of the reinforcement.

[0056] Step S3: As Figure 3 , Figure 6 As shown, the remaining single-section arch ribs 31 are assembled step by step from both sides inward. One end of each single-section arch rib 31 near the support cylinder 1 is connected to the already installed single-section arch rib 31. The other end of at least one single-section arch rib 31 is connected to the support cylinder 1 via a temporary cable 4 to complete the overall construction of the arch rib 3. For example, Figure 6 As shown, when assembling the arch rib 3, the top of the arch rib 3 is the connecting section 33. The two ends of the connecting section 33 are respectively connected to the installed single arch rib 31 on the corresponding side by welding.

[0057] Step S4: As Figure 7 As shown, concrete is poured into the interior of the arch rib 3. By pouring concrete into the interior of the arch rib 3, the rigidity of the arch rib 3 is increased, making the arch rib 3 more stable on the support cylinder 1. It also facilitates the installation of subsequent components of the large-span corridor. After the concrete inside the arch rib 3 has solidified to the relevant standards, the temporary cable 4 is removed.

[0058] A preferred method, such as Figure 8 As shown, a pouring hole 32 is opened at the top of the arch rib 3. Since the pouring hole 32 is located at the top of the arch rib 3, concrete is poured into the arch rib 3 through the pouring hole 32, making it easier for the concrete to be injected into the interior of the arch rib 3. This allows the concrete to fill the interior of the arch rib 3 to the maximum extent, thereby ensuring the rigidity of the arch rib 3 by injecting concrete into it.

[0059] The present invention discloses a construction method for a long-span connecting corridor arch rib. This method fully utilizes the strength and rigidity of the support cylinders 1 on both sides of the connecting corridor to tension the temporary cables 4. One end of each single-section arch rib 31 near the support cylinder 1 is connected to an adjacent installed single-section arch rib 31. The other end of at least one single-section arch rib 31 is connected to the support cylinder 1 via the temporary cables 4. This forms an approximately triangular stable structure with the temporary cables 4, support cylinder 1, and installed single-section arch ribs 31, ensuring a stable connection between the single-section arch rib 31 and the arch foot 2. This avoids unstable connections between the single-section arch rib 31 and the arch foot 2, which could hinder the installation of the arch rib 3. The difficulty of the project affected the installation schedule of the long-span connecting corridor. To address this, temporary cables 4 were used to assemble the single-section arch rib 31, thus completing the construction and installation of the arch rib 3. This achieved the construction process of "arch first, beam later," providing hoisting support for the subsequent installation of the connecting corridor. Consequently, during the subsequent installation of the long-span connecting corridor, the arch rib 3 served as the hoisting support for the corridor, eliminating the need to erect cast-in-place supports or formwork at the bottom of the corridor. This effectively saved time, reduced the use of steel structures, and achieved cost savings. It also reduced the impact of ground foundation deformation on the corridor structure and minimized interference with the ground passage during corridor construction.

[0060] A preferred method, such as Figure 2 As shown, a reserved duct 10 is opened on the support cylinder 1. An anchoring end 11 is installed at the end of the reserved duct 10 away from the single arch rib 31. The reserved duct 10 is pre-reserved and formed during the construction of the support cylinder 1. The anchoring end 11 is formed by the combination of multiple steel bars extending outward from inside the support cylinder 1. When the temporary cable 4 connects the single arch rib 31, one end of the temporary cable 4 is connected to the anchoring end 11, thereby connecting the temporary cable 4 and the support cylinder 1 together. The other end of the temporary cable 4 passes through the reserved duct 10 and connects to the single arch rib 31, thereby connecting the single arch rib 31 and the support cylinder 1 together through the temporary cable 4.

[0061] A preferred method, such as Figure 14 As shown, temporary ear plates 12 are welded to both ends of the single-section arch rib 31, and temporary ear plates 12 are also welded to the end of the arch foot 2 near the single-section arch rib 31. When the arch foot 2 is connected to the single-section arch rib 2, the temporary ear plate 12 at the end of the arch foot 2 is connected to the temporary ear plate 12 at the end of the single-section arch rib 31 near the arch foot 2. The temporary ear plate 12 has bolt holes. When connecting, the temporary ear plate 12 of the arch foot 2 and the temporary ear plate of the single-section arch rib 31 are fixedly connected together by bolts, so that the single-section arch rib 31 is installed on the arch foot 2.

[0062] In a preferred embodiment, temporary ear plates 12 are welded to both ends of the single-section arch rib 31. When the single-section arch rib 31 is connected to an adjacent installed single-section arch rib 31, the temporary ear plate 12 of the single-section arch rib 31 near the end of the installed single-section arch rib 31 is connected to the temporary ear plate 12 of the installed single-section arch rib 31. The temporary ear plate 12 has bolt holes. During connection, the temporary ear plate 12 of the single-section arch rib 31 near the end of the installed single-section arch rib 31 is fixedly connected to the temporary ear plate 12 of the installed single-section arch rib 31 by bolts. The gap between the two connected temporary ear plates is controlled by fine-tuning the tightness of the bolts, thereby fine-tuning the connection position between the single-section arch rib 31 and the installed single-section arch rib 31, and then the single-section arch rib 31 is connected to the installed single-section arch rib 31. Then, the joint between the single-section arch rib 31 and the installed single-section arch rib 31 is welded. After welding, the temporary ear plates on both sides of the joint are removed.

[0063] In a preferred manner, after the single-section arch rib 31 is connected to the arch foot 2 or to an adjacent installed single-section arch rib 31, without releasing the truck crane, loosen the end of the temporary cable 4 connected to the anchoring end 11, and then pull the end of the temporary cable 4 located on the anchoring end 11 to tension the temporary cable 4. Once the tension reaches 60-65% of the temporary cable 4's own tension, remove the truck crane. At this point, the single-section arch rib 31, under the tension of the temporary cable 4, connects with the arch foot... 2. Alternatively, it can be securely connected to an adjacent installed single-section arch rib 31. Then, the single-section arch rib 31 is welded to the arch foot 2 or to an adjacent installed single-section arch rib 31. After welding, the temporary cable 4 is tensioned to 95-100% of its own tension force, so that the resultant force formed by the tension of the temporary cable 4 and the weight of the single-section arch rib 31 is used to compress the single-section arch rib 31 axially, thereby fixing the single-section arch rib 31 to the support cylinder 1 with the cooperation of the temporary cable 4.

[0064] A preferred method, such as Figure 5 As shown, a flange 9 is pre-installed on the single-section arch rib 31 to facilitate the connection of the under-arch hanging column 5 to the arch rib 3 via the flange 9.

[0065] A preferred method, such as Figure 15 As shown, the single-section arch rib 31 is composed of two single-piece arch ribs 301. At least two transverse braces 13 are installed between the two single-piece arch ribs 301 to make the connection between the two single-piece arch ribs 301 stable. Furthermore, scissor braces are provided between the transverse braces 13 to increase the connection strength between the two single-piece arch ribs 301. The transverse braces 13 are made of I-beams or H-beams, and the scissor braces are made of angle steel or H-beams.

[0066] A preferred method, such as Figure 15As shown, the single-section arch rib 31 is hoisted using a four-point hoisting method. The sling 14 uses either a manual or electric hoist. During hoisting, the single-section arch rib 31 is first adjusted at low altitude. The assembly angle and the height of both sides of the single-section arch rib 31 are adjusted in advance using the manual or electric hoist, ensuring consistency in the assembly angle and height at low altitude. Then, the adjusted single-section arch rib 31 is hoisted to a high altitude for assembly. Adjusting the single-section arch rib 31 at low altitude is more convenient and safer for workers, requiring less additional safety measures. Furthermore, because the single-section arch rib 31 is adjusted in advance at low altitude, only minor adjustments are needed during high-altitude assembly. This simplifies the process and reduces the difficulty of high-altitude operations, lowers the risks of high-altitude work, further improves installation efficiency, and saves construction time.

[0067] Example 2

[0068] Based on Embodiment 1 of this application, as Figure 9-13 A construction method for a long-span connecting corridor, based on the construction method for the arch rib of a long-span connecting corridor described in Example 1, further includes the following steps:

[0069] Step A: Install the under-arch hanging column 5 and the arch bottom tie rod 6 in sequence, and perform the initial prestressing tensioning of the large-span connecting corridor;

[0070] Step B: Install and pour concrete on floor 7, and then perform final prestressing tensioning of the large-span connecting corridor.

[0071] Among them, such as Figure 9 As shown, the lower arch support column 5 at the bottom of the arch rib 3 is installed first, and the bottom arch tie rod 6 is installed after the lower arch support column 5 is installed.

[0072] A preferred method, such as Figure 11 As shown, the connecting node 52 is first welded on the under-arch hanging column to facilitate the subsequent installation of other components. After the under-arch hanging column 5 is installed, the elevation is adjusted, and then the arch bottom tie rod 6 is installed.

[0073] A preferred method, such as Figure 10 As shown, after the installation of the arch bottom tie rod 6 is completed, vertical steel strands 51 are installed on the arch bottom hanging column 5, and horizontal steel strands 61 are installed on the arch bottom tie rod 6. The large-span connecting corridor is prestressed and initially tensioned through the vertical steel strands 51 and the horizontal steel strands 61, so that the weight of the arch bottom hanging column 5 and the arch bottom tie rod 6 is transferred to the arch rib 3.

[0074] A preferred method, such as Figures 12-13As shown, after the initial tensioning of the large-span connecting corridor is completed, the steel structure construction of the lower floor 7 of the arch rib 3 is carried out. After the construction of the lower floor 7 of the arch rib 3 is completed, the construction of the upper floor 7 of the arch rib 3 is carried out. After the construction of all the steel structures of the floor 7 is completed, the concrete of the floor 7 is poured. After the pouring, the prestressing of the large-span connecting corridor is finally tensioned to transfer the load of the floor 7 to the arch rib 3, so as to complete the installation of the large-span connecting corridor.

[0075] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A construction method for a long-span connecting corridor arch rib, characterized in that, The system includes a support cylinder (1) and an arch rib (3), wherein the support cylinder (1) is a concrete structure and the arch rib (3) includes multiple single-section arch ribs (31), and includes the following steps: Step S1: Construct the support cylinders (1) on both sides and set arch feet (2) on both support cylinders (1). Step S2: Connect a single arch rib (31) to the arch foot (2). A temporary cable (4) is connected to one end of the single arch rib (31) away from the support cylinder (1). The temporary cable (4) is connected to the support cylinder (1) and is located above the corresponding arch foot (2). Step S3: Assemble the remaining single-section arch ribs (31) from both sides inward. The end of each single-section arch rib (31) near the support cylinder (1) is connected to the adjacent installed single-section arch rib (31). The other end of at least one single-section arch rib (31) is connected to the support cylinder (1) through the temporary cable (4) to complete the overall construction of the arch rib (3). Step S4: Pour concrete into the interior of the arch rib (3) and remove the temporary cable (4). In step S2: a fixed pulley (8) is provided on the upper part of the single-section arch rib (31), and one end of the temporary cable (4) passes around the fixed pulley (8) and is vertically connected to the single-section arch rib (31). Temporary ear plates (12) are provided at both ends of the single-section arch rib (31), and a temporary ear plate (12) is also provided at the end of the arch foot (2) near the single-section arch rib (31). The temporary ear plate (12) on the arch foot (2) is connected to the temporary ear plate (12) on the single-section arch rib (31). After the single-section arch rib (31) is connected to the arch foot (2) or to an adjacent installed single-section arch rib (31), the temporary cable (4) is tensioned to 60%~65% of its tension force. Then the truck crane is removed. After the single-section arch rib (31) is fixedly connected to the arch foot (2) or to an adjacent installed single-section arch rib (31), the temporary cable (4) is tensioned to 95%~100% of its tension force. The support cylinder (1) is provided with a reserved channel (10). An anchor end (11) is provided at the end of the reserved channel (10) away from the single arch rib (31). One end of the temporary cable (4) is connected to the single arch rib (31), and the other end of the temporary cable (4) passes through the reserved channel (10) and is connected to the anchor end (11).

2. The construction method for a large-span connecting corridor arch rib according to claim 1, characterized in that, In step S4: a pouring hole (32) is provided at the top of the arch rib (3), and the pouring hole (32) is used to pour concrete into the interior of the arch rib (3).

3. The construction method for a large-span connecting corridor arch rib according to claim 1, characterized in that, The temporary ear plate (12) on the single-section arch rib (31) is connected to the temporary ear plate (12) on the adjacent single-section arch rib (31).

4. The construction method for a large-span connecting corridor arch rib according to claim 1, characterized in that, The temporary ear plate (12) is provided with bolt holes, and adjacent temporary ear plates (12) are connected by bolts.

5. The construction method for a large-span connecting corridor arch rib according to claim 1, characterized in that, When hoisting the single-section arch rib (31), first adjust the assembly angle of the single-section arch rib (31) and the height of both sides of the single-section arch rib (31) in a low-altitude state, and then assemble the single-section arch rib (31) in a high-altitude state.

6. A construction method for a long-span connecting corridor, characterized in that, The construction of the arch rib (3) based on the construction method of a large-span connecting corridor arch rib as described in any one of claims 1-5 further includes the following steps: Step A: Install the under-arch hanging column (5) and the bottom arch tie rod (6) in sequence, and perform the initial prestressing tensioning of the large-span connecting corridor; Step B: Install the floor (7) and pour concrete, and then perform the final prestressing tensioning of the large-span connecting corridor.

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