A wind shaft lining air pipe installation structure and a construction method thereof

Abstract

This application relates to the field of building construction technology, and provides a ventilation shaft duct installation structure and its construction method. The installation structure includes: a roof slab, a duct body, a lifting and supporting assembly, a sleeve, a support and clamping assembly, and a suspension component. The duct body includes multiple duct sections spliced ​​together, with steel bars installed on the two opposite outer walls of each duct section. The lifting and supporting assembly is distributed around the duct body for lowering the duct sections one by one into the ventilation shaft. The sleeve is pre-embedded in the ventilation shaft structural wall. The support and clamping assembly extends through the sleeve into the ventilation shaft and is clamped and fixed with the steel bars. The upper end of the suspension component is connected to the roof slab, and the lower end is suspended and connected to the support and clamping assembly. The installation of the duct of this invention is carried out after the ventilation shaft construction is completed, which can reduce the overlap of processes and improve construction efficiency. After the multiple duct sections are assembled and spliced ​​on the roof slab, they are lowered into the ventilation shaft one by one. The connection process between the duct sections is safe and reliable, and the installation quality is guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of building construction technology, specifically relating to an installation structure for ventilation shaft lining ducts and its construction method. Background Technology

[0002] Currently, in high-rise residential and office buildings, air shafts such as pressurized air supply shafts and smoke exhaust shafts require duct lining for fire protection. However, the installation of these ducts within the shafts has always been a challenge during construction. In the past, due to structural limitations and narrow spaces within the shafts, it was difficult to connect and secure the ducts with high quality, resulting in low efficiency and requiring significant manpower for installation. This is especially true for shafts with one or two main structural walls, which often necessitates enlarging the shaft's design dimensions for ease of installation, leading to unnecessary loss of building area. Summary of the Invention

[0003] To address the problems in the prior art, this application proposes a ventilation shaft lining duct installation structure and its construction method. By pre-embedding sleeves in the ventilation shaft structure wall, installing ducts layer by layer upside down on the roof, and fixing the ducts using support clamping components passing through the pre-embedded sleeves, the construction quality and efficiency are improved.

[0004] In a first aspect, the present invention proposes an installation structure for an inner lining duct in a ventilation shaft, comprising:

[0005] A roof slab, located at the top of the ventilation shaft, has a shaft opening communicating with the ventilation shaft, and a waterproof sill is provided around the shaft opening; a duct body, comprising multiple spliced ​​duct sections, each duct section having butt flanges at both ends; steel bars are provided on the two opposite outer walls of each duct section; a lifting and supporting assembly, distributed around the duct body and located above the waterproof sill, supports the duct body. The system includes: a connecting flange plate for lowering the duct section section by section through the shaft opening into the ventilation shaft; a sleeve embedded in the ventilation shaft structure wall and located on both sides of the duct body; a support clamping assembly extending through the sleeve into the ventilation shaft and clamping and fixing it with the steel bar, the two ends of the support clamping assembly being cantilevered ends; and a suspension member disposed outside the ventilation shaft, the upper end of the suspension member being connected to the roof slab, and the lower end of the suspension member being suspended and connected to the cantilevered ends.

[0006] Furthermore, the installation structure also includes a support core column, an airbag, and an inflation device; the lower end of the sleeve is provided with a through slot; the support core column includes a support base, a partition, a back plate, and a front plate; the support base is supported on the lower end of the support clamping assembly, and the two sides of the support base fill the gap between the sleeve and the support clamping assembly, the support base dividing the internal space of the sleeve into an upper compartment and a lower compartment; the upper end of the partition is inserted into the sleeve through the slot and connected to the support base to divide the lower compartment of the sleeve into a first empty compartment and a second empty compartment; the partition is provided with a connection along the height direction to the... The first and second empty compartments have strip-shaped holes; the back plate is fixedly connected to the rear end of the partition, and the back plate is pressed against the rear end of the lower compartment to close the lower compartment; the front plate is fixedly connected to the front end of the partition, and the front plate is pressed against the front end of the first empty compartment to close the first empty compartment; the airbag is disposed in the first empty compartment, and the airbag is provided with an air nozzle for inflation and deflation, and the air nozzle is inserted into the second empty compartment through the strip-shaped holes on the partition; the inflation device is connected to the air nozzle and is used to inflate the airbag so that the inflated airbag lifts the support base to support the support clamping assembly.

[0007] The system utilizes inflatable airbags to lift the support base, thereby enabling support and fine-tuning of the height of the support clamping components, improving the installation quality and accuracy of the duct body. Inflating the airbags with an inflation device allows for automatic lifting of the support core column, eliminating the need for manual support, saving effort and providing convenience; remote control is also possible. Synchronous and equal-pressure inflation of the airbags within the sleeves on the same floor allows for synchronized height adjustment of multiple support clamping components on the same floor, thereby adjusting the relative height of the steel bars on the duct body to sleeves on other floors, facilitating the insertion of support clamping components on other floors.

[0008] Furthermore, the installation structure also includes concrete filler, a sealing plate, and an overlap member; the sealing plate is connected to one side of the front plate through the overlap member, the sealing plate is close to the front end of the second empty chamber for sealing the second empty chamber, the concrete filler fills the second empty chamber, and the concrete filler seeps into the first empty chamber through the strip hole to fill the first empty chamber.

[0009] The second cavity is filled with concrete filler. Once solidified, the concrete filler provides effective support to the support base within the second cavity, preventing the support clamping assembly from sinking and ensuring the duct body is securely fixed. Simultaneously, the concrete filler seeps into the first cavity through the slotted holes, similarly providing effective support to the support base and ensuring the stability of the support clamping assembly. Furthermore, the air bladder within the first cavity reduces the amount of concrete filler used, thus lowering costs.

[0010] Furthermore, the support clamping assembly includes a support steel pipe and a support angle steel; the support steel pipe is supported at the lower end of the steel bar, and the support angle steel is disposed at the upper end of the steel bar. Both ends of the support steel pipe and the support angle steel extend through the sleeve to the outside of the ventilation shaft and are connected by bolts to clamp the steel bar.

[0011] By clamping and fixing the steel bars of the duct body with supporting steel pipes and supporting angle steel, the steel bars can be effectively supported, the structural strength can be improved, and the duct body can be prevented from bending and deforming laterally.

[0012] Furthermore, the suspension component includes a suspension rod, a damping rod, and a connecting column. The connecting column passes through the supporting steel pipe and the supporting angle steel and is connected to the damping rod located at the upper end of the supporting angle steel. The upper end of the damping rod is connected to the suspension rod, and the upper end of the suspension rod is connected to the roof slab.

[0013] By placing a damping rod between the hanger and the connecting column, the damping rod absorbs the vibration transmitted by the duct body, thus preventing the hanger from swaying.

[0014] Furthermore, the suspension component also includes a support beam, which is connected to the lower end of the supporting steel pipe via the connecting column.

[0015] Furthermore, a pad is provided between the supporting angle steel and the supporting steel pipe.

[0016] Furthermore, the lifting and supporting assembly includes a hydraulic support and a supporting top support; the supporting top support is provided with a waist-shaped hole, and the supporting top support is used to support the docking flange; the lower end of the hydraulic support is fixed to the waterproof sill, and the upper end of the hydraulic support is provided with an anti-detachment bolt, which passes through the waist-shaped hole to connect to the supporting top support.

[0017] Secondly, the present invention proposes a construction method for an air duct lining installation structure in a ventilation shaft, comprising the following steps: pre-embedding a sleeve in the ventilation shaft structure wall, such that the sleeve is located on both sides of the air duct body to be installed; setting a roof slab on the top of the ventilation shaft, and setting a shaft opening communicating with the ventilation shaft on the roof slab, and setting a waterproof sill around the shaft opening; setting multiple lifting and supporting components on the upper end of the waterproof sill, and distributing them around the air duct body to be installed; using the lifting and supporting components to lift the connecting flange plate of the air duct body, and lowering the air duct section by section through the shaft opening into the ventilation shaft; using a support clamping component to extend through the sleeve into the ventilation shaft, and clamping and fixing it with the steel bars of the air duct section; using a suspension member to suspend the cantilevered end of the support clamping component below the roof slab.

[0018] Furthermore, it also includes the following step: filling at least the internal space of the sleeve located below the support clamping assembly with concrete filler for supporting the support clamping assembly.

[0019] The beneficial effects of this invention are as follows: By pre-embedding sleeves in the ventilation shaft structural wall and setting steel bars on the outer walls of each section of the duct body, after the ventilation shaft construction is completed, the support clamping assembly is used to clamp and fix the steel bars through the sleeves. Then, the support clamping assembly is suspended below the roof slab using suspension components to complete the installation of the duct body. Since the installation of the duct in this invention is carried out after the ventilation shaft construction is completed, it can reduce the overlap of processes and improve construction efficiency. After multiple duct sections are assembled and spliced ​​on the roof slab, they are lowered into the ventilation shaft section by section. The connection process between duct sections is safe and reliable, and the installation quality is guaranteed. Since the through-support construction of the support clamping assembly and the connection construction of the suspension components are all located outside the ventilation shaft, the traditional ventilation shaft inside work is transformed into ventilation shaft outside work, which improves the efficiency of construction personnel and the construction quality. In addition, the construction is not limited by the structure of the ventilation shaft structural wall and can be applied to both concrete and brick ventilation shafts, with a wide range of applications. It can effectively improve the utilization rate of the ventilation shaft area and reduce the waste of building area. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the horizontal cross-section of the ventilation shaft lining duct installation structure of the present invention.

[0021] Figure 2 for Figure 1 Schematic diagram of the AA section structure.

[0022] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure of the middle BB.

[0023] Figure 4 for Figure 3 A top-view structural diagram.

[0024] Figure 5 for Figure 2 A magnified schematic diagram of the structure at point C.

[0025] Figure 6 for Figure 3 A partial three-dimensional structural diagram of a support clamping component passing through a sleeve to clamp and fix a steel bar.

[0026] Figure 7 for Figure 6 A partially exploded view of the structure of the inner sleeve containing the supporting core and airbag.

[0027] Figure 8 for Figure 7 A schematic diagram of the structure of the inner sleeve and the supporting core column.

[0028] Figure 9 for Figure 8 A schematic diagram of the structure after the front plate and the end plate of the supporting core column are connected by an overlap joint.

[0029] In the diagram, 10-roof top plate; 20-duct body; 21-connecting flange plate; 22-steel bar; 30-lifting and supporting assembly; 31-hydraulic support component; 32-support top support; 33-waist-shaped hole; 34-anti-loosening bolt; 40-sleeve; 41-slot hole; 50-support clamping assembly; 51-support steel pipe; 52-support angle steel; 60-suspension component; 61-hanging rod; 62-damping rod; 63-connecting column; 64-support beam; 65-pad plate; 70-support core column; 71-support seat; 72-partition; 73-strip hole; 74-back plate; 75-front plate; 76-sealing plate; 77-overlapping component; 80-airbag; 81-air nozzle; 90-waterproof sill; 100-ventilation shaft structural wall. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] like Figure 1-9 The ventilation shaft lining duct installation structure shown includes: a roof top plate 10, a duct body 20, a lifting and supporting assembly 30, a sleeve 40, a support and clamping assembly 50, and a suspension component 60.

[0032] The roof slab 10 is installed on top of the ventilation shaft. The roof slab 10 has a shaft opening that communicates with the ventilation shaft, and a waterproof sill 90 is installed around the shaft opening. The waterproof sill 90 is constructed simultaneously with the pouring of the roof slab 10.

[0033] The duct body 20 comprises multiple duct sections joined together, with mating flanges 21 at both ends of each duct section. In this embodiment, the duct body 20 is vertically installed, and each corresponding duct section has mating flanges 21 at its upper and lower ends. The mating flanges 21 of two vertically adjacent duct sections abut against each other and are then connected by bolts.

[0034] Each duct section has steel bars 22 installed on its two opposite outer walls; in some embodiments, steel bars 22 are installed on all four outer walls of the duct section. The height of the steel bars 22 in each duct section is determined based on the length of the duct section and the floor height. Sleeves 40 are embedded in the shaft structure wall 100 of the ventilation shaft and located on both sides of the duct body 20. The embedded position of the sleeves 40 also needs to consider the floor height and the location of the steel bars 22. Once the floor height is determined, the length of the duct body 20 or the required length or number of duct sections for that floor is also determined, and the height of the steel bars 22 on the corresponding duct section is determined, ultimately ensuring that when the duct body 20 is installed in the ventilation shaft, the height of the sleeves 40 on each floor corresponds to the height of the steel bars 22 on the duct body 20 of that floor. In this embodiment, the steel bars 22 are C-shaped steel bars 22, with curved edges to better cooperate with the support clamping assembly 50, thus limiting the horizontal displacement of both.

[0035] The lifting and supporting components 30 are distributed around the duct body 20 and located at the upper end of the waterproof sill 90. The lifting and supporting components 30 support the docking flange plate 21 of the duct body 20, allowing the duct sections to be lowered section by section through the shaft opening into the ventilation shaft. With the action of the lifting and supporting components 30, the duct body 20 can be lowered without manual intervention, saving effort while preventing lateral displacement. Furthermore, the descent height of each section is fixed, improving the descent accuracy of the duct body 20 and ensuring installation quality.

[0036] The lifting and supporting assembly 30 includes a hydraulic support 31 and a supporting top support 32; the supporting top support 32 is provided with a waist-shaped hole 33 and is used to support the docking flange 21; the lower end of the hydraulic support 31 is fixed to the waterproof sill 90, and the upper end of the hydraulic support 31 is provided with an anti-detachment bolt 34, which passes through the waist-shaped hole 33 to connect to the supporting top support 32.

[0037] like Figure 3 , Figure 4 As shown, the length direction of the oblong hole 33 on the support top support 32 is perpendicular to the side wall of the duct body 20 corresponding to the support top support 32. After the anti-detachment bolt 34 passes through the oblong hole 33, it locks the support top support 32 to the upper end of the hydraulic support 31, so that the support top support 32 and the hydraulic support 31 are relatively fixed. The support top support 32 is supported on the lower end of the docking flange plate 21, and can support the duct section with the docking flange plate 21 at the upper end. When the support top support 32 is not needed to support the duct section, the anti-detachment bolt 34 is loosened, so that the support top support 32 can move horizontally along the length direction of the oblong hole 33, thereby moving away from the duct section, so that the support top support 32 is no longer below the docking flange plate 21, and therefore no longer supports the docking flange plate 21. The duct section connected to the docking flange plate 21 can be raised and lowered.

[0038] In this embodiment, the hydraulic support component 31 includes a hydraulic lifting rod connected to a hydraulic control system, which controls the raising and lowering of the hydraulic lifting rod. When the hydraulic control system includes multiple hydraulic lines and hydraulic valves, the synchronous raising and lowering of multiple hydraulic support components 31 can be achieved by coordinating the opening and closing of multiple hydraulic valves.

[0039] Lifting and supporting components 30 are installed in all four directions of the duct section to provide additional support. Figure 4 For example, a set of lifting and supporting components 30 is provided on each of the left and right sides of the duct section. Each set of lifting and supporting components 30 includes two hydraulic support members 31 and a supporting top support 32 connected to the upper end of the two hydraulic support members 31. The hydraulic support members 31 of the lifting and supporting components 30 on the left and right sides of the duct section rise and fall synchronously. Similarly, a set of lifting and supporting components 30 is provided on each of the front and rear sides of the duct section. Each set of lifting and supporting components 30 includes two hydraulic support members 31 and a supporting top support 32 connected to the upper end of the two hydraulic support members 31. The hydraulic support members 31 of the lifting and supporting components 30 on the front and rear sides of the duct section rise and fall synchronously. In this embodiment, the main purpose of the lifting and supporting components 30 is to achieve the gradual descent of the duct section of the duct body 20. (See attached...) Figure 4 For example, the lifting and supporting components 30 on the left and right sides of the duct section and the lifting and supporting components 30 on the front and rear sides alternately lift the duct section. For example, when the lifting and jacking components 30 on the left and right sides lift the first duct section, the supporting tops 32 of the lifting and jacking components 30 on the front and rear sides shift to release the lifting of the first duct section. The hydraulic supports 31 of the lifting and jacking components 30 on the left and right sides lower by the height of one duct section. A second duct section is then installed at the upper end of the first duct section. This causes the hydraulic supports 31 of the lifting and jacking components 30 on the front and rear sides to rise, while the supporting tops 32 shift to lift the second duct section. Simultaneously, the supporting tops 32 of the lifting and jacking components 30 on the left and right sides shift to release the lifting of the first duct section. The hydraulic supports 31 of the lifting and jacking components 30 on the front and rear sides lower by the height of one duct section, allowing the first duct section to descend into the ventilation shaft. At the same time, the hydraulic supports 31 of the lifting and jacking components 30 on the left and right sides rise to facilitate the lifting of the installed third duct section. The installation and lowering of the duct body 20 is performed section by section in sequence.

[0040] The support clamping assembly 50 extends from the outside of the ventilation shaft through the sleeve 40 into the ventilation shaft and is clamped and fixed with the steel bar 22. Both ends of the support clamping assembly 50 are cantilevered ends.

[0041] The suspension member 60 is installed outside the ventilation shaft. The upper end of the suspension member 60 is connected to the roof slab 10, and the lower end of the suspension member 60 is suspended and connected to the cantilever end. Of course, in addition to the roof slab 10, the building structure also includes floor slabs. The upper end of the suspension member 60 can be connected to the roof slab 10, and the upper end of the suspension member 60 can be connected to the floor slabs. In all floors except the top floor, a suspension member 60 is installed at the lower end of each floor slab, and the suspension member 60 for that floor is connected to the clamping support assembly for that floor. Alternatively, the suspension member 60 can be installed only at the lower end of the roof slab 10.

[0042] like Figure 5-6 As shown, the support clamping assembly 50 includes a support steel pipe 51 and a support angle steel 52. The support steel pipe 51 is supported at the lower end of the steel bar 22, and the support angle steel 52 is located at the upper end of the steel bar 22. Both ends of the support steel pipe 51 and the support angle steel 52 extend through the sleeve 40 to the outside of the ventilation shaft and are connected by bolts to clamp the steel bar 22. The lengths of both the support steel pipe 51 and the support angle steel 52 are longer than the length of the steel bar 22 on the ventilation duct body 20.

[0043] The suspension component 60 includes a suspension rod 61, a damping rod 62, and a connecting column 63. The connecting column 63 passes through the supporting steel pipe 51 and the supporting angle steel 52 and connects to the damping rod 62 located at the upper end of the supporting angle steel 52. The upper end of the damping rod 62 is connected to the suspension rod 61, and the upper end of the suspension rod 61 is connected to the roof slab 10. The damping rod 62 adopts an existing structure. A pad 65 is also provided between the supporting angle steel 52 and the supporting steel pipe 51 at the cantilever end of the support clamping assembly 50. The pad 65 is made of rubber and serves to absorb shock and energy.

[0044] The suspension component 60 also includes a support beam 64, which is connected to the lower end of the support steel pipe 51 via a connecting column 63. A nut is attached to the lower end of the connecting column 63, located at the lower end of the support beam 64. The upper end of the connecting column 63 passes sequentially through the support beam 64, the support steel pipe 51, the pad 65, and the support angle steel 52 before connecting to the lower end of the damping rod 62. When the duct body 20 vibrates, the vibration is transmitted through the steel bar 22 to the cantilevered ends of the support angle steel 52 and the support steel pipe 51. The pad 65 absorbs energy, and the damping rod 62 further reduces vibration and absorbs energy, reducing the impact of duct vibration on the suspension rod 61 and ensuring the stability of the suspended duct body 20.

[0045] like Figure 6-9As shown, the installation structure also includes a support core column 70, an airbag 80, and an inflation device; the lower end of the sleeve 40 is provided with a through slot 41; the support core column 70 includes a support base 71, a partition 72, a back plate 74, and a front plate 75; the support base 71 is supported on the lower end of the support clamping assembly 50, and the two sides of the support base 71 fill the gap between the sleeve 40 and the support clamping assembly 50, dividing the internal space of the sleeve 40 into an upper compartment and a lower compartment; the upper end of the partition 72 is inserted into the sleeve 40 through the slot 41 and connected to the support base 71 to divide the lower compartment of the sleeve 40 into a first empty compartment and a second empty compartment; the upper edge height of the partition 72 is... The partition has a strip-shaped hole 73 connecting the first and second empty compartments. The back plate 74 is fixedly connected to the rear end of the partition 72 and is pressed against the rear end of the lower compartment to close it. The front plate 75 is fixedly connected to the front end of the partition 72 and is pressed against the front end of the first empty compartment to close it. An airbag 80 is disposed in the first empty compartment and has an air nozzle 81 for inflation and deflation. The air nozzle 81 is inserted into the second empty compartment through the strip-shaped hole 73 on the partition 72. An inflation device is connected to the air nozzle 81 and is used to inflate the airbag 80 so that the inflated airbag 80 lifts the support base 71 to support the support clamping assembly 50.

[0046] In some embodiments, the support core column 70 is an upright I-beam, the web of the I-beam is a partition 72, one of the flanges of the I-beam is a back plate 74, and the other flange is a front plate 75 and a sealing plate 76 connected together.

[0047] The installation structure also includes concrete filler, sealing plate 76 and overlapping member 77; sealing plate 76 is connected to one side of front plate 75 through overlapping member 77, sealing plate 76 is close to the front end of second cavity to seal second cavity, concrete filler fills second cavity, and concrete filler seeps into first cavity through strip hole 73 to fill first cavity.

[0048] To facilitate the filling of concrete filler, one flange of the I-beam supporting the core column 70 is split into a front plate 75 and a sealing plate 76 at the web. The sealing plate 76 is not closed in the early stage to facilitate the inflation of the airbag 80.

[0049] The support base 71 is a U-shaped support frame, with its bottom supporting the support steel pipe 51 and its sides filling the gap between the support steel pipe 51 and the sleeve 40. The bottom and sides of the support base 71 divide the internal space of the sleeve 40 into an upper compartment and a lower compartment that are not connected vertically. The partition 72 vertically passes through the slot 41 at the lower end of the sleeve 40. The thickness of the partition 72 is the same as the diameter of the slot 41, so the partition 72 can move vertically within the sleeve 40, dividing the lower compartment of the sleeve 40 into a first empty compartment and a second empty compartment. The first empty compartment is on the left side of the partition 72, and the second empty compartment is on the right side of the partition 72. In practice, the airbag 80 can be set in either the first empty compartment or the second empty compartment. The strip-shaped hole 73 on the partition 72 facilitates the displacement of the air nozzle 81 of the airbag 80. When the airbag 80 inflates and deforms, the position of its air nozzle 81 may change, and the strip-shaped hole 73 facilitates the displacement of the air nozzle 81. After the front panel 75 seals the front end of the first empty compartment where the airbag 80 is located, the airbag 80 is restricted on all sides, and the sleeve 40 is fixed in the ventilation shaft structural wall 100. The direction of the airbag 80's expansion and deformation is restricted, so that the airbag 80 can only expand upwards after inflation, thereby lifting the support seat 71. Simultaneously, as the airbag 80 expands and lifts the support seat 71, it also drives the partition 72, back plate 74, and front panel 75 connected to the support seat 71 to rise synchronously, ensuring that most of the side walls of the first empty compartment are in a closed state, thus restricting the lateral deformation of the airbag 80. The inflation equipment uses existing technology, such as an air pump.

[0050] The air nozzle 81 is equipped with a one-way valve. The one-way valve is open when inflating and closed when not inflating.

[0051] By continuously inflating the airbag 80, the support base 71 is lifted to the target height by the airbag 80. The target height is a range value. When downward pressure is applied to the support steel pipe 51 or the support angle steel 52, the airbag 80 deforms, and the support angle steel 52 and the support steel pipe 51 can sink slightly, thereby realizing the micro-adjustment of the height of the air duct body 20, which facilitates the insertion of the support clamping components 50 on other floors.

[0052] In some embodiments, the support base 71 is fixedly connected to the support steel pipe 51, and the connection method may be bolt connection.

[0053] Once the support base 71 reaches the target height, the inflation device and air nozzle 81 are separated. The sealing plate 76 is then pressed tightly against the front end of the second empty chamber, and concrete filler is poured into the second empty chamber. As the concrete filler is filled, the sealing plate 76 is raised synchronously until the second empty chamber is completely filled. The sealing plate 76 is then connected to the front plate 75 using the overlap joint 77. In some embodiments, a grouting port is provided at the upper end of the sealing plate 76. The sealing plate 76 and the front plate 75 are connected in advance using the overlap joint 77, and then the sealing plate 76 is welded and sealed to the sleeve 40. Concrete filler is injected into the second cavity through the grouting port. After the second cavity is filled with concrete filler, grouting continues, allowing the concrete filler to seep into the first cavity through the strip-shaped hole 73, enveloping and filling the air bladder 80 in the first cavity. This continues until the liquid level of the concrete filler in both the first and second cavities reaches the height of the lower end face of the support seat 71. Grouting is then performed and compacted, and the grouting port is sealed. After the concrete filler in the first and second cavities solidifies, it provides support for the support seat 71. The concrete filler fills the lower cavity of the sleeve 40 while simultaneously enveloping the partition plate 72, and a portion of the concrete filler is located within the strip-shaped hole 73 of the partition plate 72, restricting the vertical displacement of the partition plate 72. The partition plate 72 is permanently fixed, and the support seat 71 is fixedly connected to the support steel pipe 51, thus permanently fixing the support steel pipe 51. In some embodiments, after the concrete filler has solidified, the suspension member 60 can be removed and the excess support clamping assembly 50 can be cut off. The excess support clamping assembly 50 refers to the cantilevered end located outside the ventilation shaft after passing through the sleeve 40.

[0054] Based on the same inventive concept, this invention also proposes a construction method for an air shaft lining duct installation structure, comprising the following steps:

[0055] The sleeve 40 is pre-embedded in the ventilation shaft structural wall 100, so that the sleeve 40 is located on both sides of the ventilation duct body 20 to be installed. During the construction of the ventilation shaft, the sleeve 40 is pre-embedded on each floor. In this embodiment, the sleeve 40 is a square steel pipe.

[0056] A roof slab 10 is installed on top of the ventilation shaft, and a shaft opening communicating with the ventilation shaft is provided on the roof slab 10, and a waterproof sill 90 is provided around the shaft opening.

[0057] After this step, the ventilation shaft, roof slab 10, and floor slab construction are completed. Then, the ventilation duct body 20 is installed.

[0058] Multiple lifting and supporting components 30 are set at the upper end of the waterproof sill 90 and distributed around the air duct body 20 to be installed; the lifting and supporting components 30 are used to lift the docking flange plate 21 of the air duct body 20, and the air duct body 20 is lowered alternately, so that the air duct section of the air duct body 20 is lowered section by section through the shaft opening into the air shaft.

[0059] The support clamping assembly 50 extends through the sleeve 40 into the ventilation shaft and clamps and fixes the steel bar 22 of the ventilation duct section; the support angle steel 52 and support steel pipe 51 of the support clamping assembly 50 are used to clamp and fix the steel bar 22.

[0060] The cantilever end of the connecting support clamp assembly 50 is suspended below the roof slab 10 using the suspension member 60. For other floors, the cantilever end of the connecting support clamp assembly 50 for that floor is suspended below the floor slab of that floor using the suspension member 60.

[0061] The internal space of the sleeve 40 located below the support clamping assembly 50 is filled with concrete filler to support the support clamping assembly 50. Specifically, the concrete filler is filled into the lower chamber of the sleeve 40, enclosing the airbag 80 and partition 72 within the lower chamber. This concrete filler secures the support core 70 within the sleeve 40, and the support core 70 is fixedly connected to the support steel pipe 51, thereby securing the support steel pipe 51 to the sleeve 40. In some embodiments, the upper chamber of the sleeve 40 is also filled with concrete filler or other flame-retardant materials.

[0062] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A wind shaft lining air duct installation structure characterized by, The installation structure comprises: a roof deck arranged on the top of the wind shaft, a shaft opening being arranged on the roof deck and communicating with the wind shaft, and a waterproof ridge being arranged around the shaft opening; a duct body comprising a plurality of duct segments spliced together, each duct segment being provided with a butt flange plate at each end thereof, and each duct segment being provided with a steel bar on opposite outer sidewalls thereof; a lifting and holding assembly arranged around the duct body and at the upper end of the waterproof ridge, the lifting and holding assembly holding the butt flange plates of the duct body and used for sequentially lowering the duct segments through the shaft opening into the wind shaft; a sleeve embedded in the wind shaft structure wall of the wind shaft and arranged on both sides of the duct body; a support and clamping assembly extending into the wind shaft through the sleeve and clamping and fixing the steel bars, both ends of the support and clamping assembly being cantilevered ends; and a suspension member arranged outside the wind shaft, the upper end of the suspension member being connected to the roof deck, and the lower end of the suspension member being cantilevered to the cantilevered ends. The installation structure further comprises a support core column, an air bag and an inflation device; the lower end of the sleeve is provided with a through slot; the support core column comprises a support seat, a partition plate, a back plate and a front plate; the support seat is supported at the lower end of the support and clamping assembly, the support seat is filled in the gap between the sleeve and the support and clamping assembly on both sides of the support seat, and the support seat divides the internal space of the sleeve into an upper compartment and a lower compartment; the upper end of the partition plate is inserted into the sleeve through the slot and connected to the support seat to divide the lower compartment of the sleeve into a first empty compartment and a second empty compartment; a strip-shaped hole is arranged on the partition plate in the height direction and communicates the first empty compartment and the second empty compartment; the back plate is fixedly connected to the rear end of the partition plate, the back plate is tightly attached to the rear end of the lower compartment, and the back plate is used for closing the lower compartment; the front plate is fixedly connected to the front end of the partition plate, the front plate is tightly attached to the front end of the first empty compartment, and the front plate is used for closing the first empty compartment; the air bag is arranged in the first empty compartment, the air bag is provided with an air nozzle for inflation and deflation, the air nozzle is inserted into the second empty compartment through the strip-shaped hole on the partition plate; the inflation device communicates with the air nozzle and is used for inflating the air bag to make the inflated air bag lift the support seat to support the support and clamping assembly; the support and clamping assembly comprises a support steel pipe and a support angle steel; the support steel pipe is supported at the lower end of the steel bar, the support angle steel is arranged at the upper end of the steel bar, and both ends of the support steel pipe and the support angle steel extend out of the sleeve into the wind shaft and are connected by bolts to clamp the steel bar.

2. An air shaft lining duct mounting structure according to claim 1, wherein The installation structure further comprises a concrete filler, a sealing plate and a lapping member; the sealing plate is connected to one side of the front plate by the lapping member, the sealing plate is tightly attached to the front end of the second empty compartment, and the sealing plate is used for closing the second empty compartment; the concrete filler fills the second empty compartment, and the concrete filler penetrates into the first empty compartment through the strip-shaped hole to fill the first empty compartment.

3. An air shaft lining duct mounting structure according to claim 1, wherein The suspension piece comprises a hanger, a damping rod and a connecting column, the connecting column is connected with the damping rod at the upper end of the supporting angle steel and passes through the supporting steel pipe and the supporting angle steel, the upper end of the damping rod is connected with the hanger, and the upper end of the hanger is connected with the roof top plate.

4. An air shaft lining duct mounting structure according to claim 3, wherein The suspension piece further comprises a joist, and the joist is connected to the lower end of the supporting steel pipe through the connecting column.

5. An air shaft lining duct mounting structure according to claim 3, wherein A gusset plate is further arranged between the supporting angle steel and the supporting steel pipe.

6. An air shaft lining duct mounting structure according to claim 1, wherein The lifting and holding assembly comprises a hydraulic support and a supporting top holder, the supporting top holder is provided with a waist-shaped hole, and the supporting top holder is used for holding the butt-joint flange plate; the lower end of the hydraulic support is fixed with the waterproof ridge, the upper end of the hydraulic support is provided with an anti-escape bolt, and the anti-escape bolt passes through the waist-shaped hole to connect the supporting top holder.

7. A construction method of the wind tunnel lining wind pipe installation structure according to claim 1, characterized by, The method comprises the following steps: The sleeve pipe is pre-buried in the wind well structure wall of the wind well, so that the sleeve pipe is located on both sides of the to-be-installed wind pipe body; The roof top plate is arranged at the top of the wind well, and a well shaft opening communicating with the wind well is arranged on the roof top plate, and a waterproof ridge is arranged around the well shaft opening; A plurality of lifting and holding assemblies are arranged at the upper end of the waterproof ridge and distributed around the to-be-installed wind pipe body; the butt-joint flange plate of the wind pipe body is held by the lifting and holding assembly, and the wind pipe section of the wind pipe body is sequentially lowered through the well shaft opening into the wind well; The supporting clamping assembly is inserted into the wind well through the sleeve pipe and is clamped and fixed with the steel bar of the wind pipe section; The overhanging end of the supporting clamping assembly is suspended below the roof top plate by the suspension piece.

8. The construction method according to claim 7, characterized in that, The method further comprises the following steps: The internal space of the sleeve pipe below the supporting clamping assembly is filled with concrete filler to support the supporting clamping assembly.

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