Super-large displacement amount vibration isolation air pipe structure and construction method thereof

Abstract

This invention discloses a seismic isolation duct structure with ultra-large displacement and its construction method, comprising: two duct segments, one duct segment fixed in the seismic isolation zone of the building structure, and the other duct segment fixed in the non-seismic isolation zone of the building structure, forming a seismic isolation joint between the seismic isolation zone and the non-seismic isolation zone; a connecting segment connecting the two duct segments and arranged horizontally or vertically in the seismic isolation joint, the connecting segment comprising multiple coaxially arranged flexible duct sections and supporting springs, flanges forming at both ends of the flexible ducts, adjacent flexible duct sections being connected by flanges, and multiple supporting springs connected between the flanges at both ends of each flexible duct section, the multiple supporting springs being arranged along the circumferential direction of the flanges, the number of supporting springs on adjacent flexible duct sections being different. This invention solves the problem that there are no specific standards and mature cases for seismic isolation ducts with displacement exceeding 800mm and deformation exceeding 400mm in seismic isolation buildings.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a seismic isolation duct structure with ultra-large displacement and its construction method. Background Technology

[0002] Seismic isolation technology separates the superstructure and substructure of a building, absorbing seismic energy through isolation layers to reduce damage to the superstructure and ensure normal use after an earthquake. However, extensive experience with earthquake disasters shows that isolation layers deform significantly under seismic loads, and their internal ducts are numerous and complex. Air ducts passing through the isolation layer are susceptible to bending or axial deformation due to the layer's displacement. Currently, there are no specific standards or mature case studies for the use of isolation ducts in seismically isolated buildings with displacement exceeding 800mm and deformation exceeding 400mm. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, a seismic isolation duct structure with ultra-large displacement and its construction method are provided to solve the problem that there are no specific standards and mature cases for seismic isolation ducts with displacement exceeding 800mm and deformation exceeding 400mm in seismic isolation buildings.

[0004] To achieve the above objectives, a vibration-isolation duct structure with ultra-large displacement is provided, comprising:

[0005] Two duct segments are provided, one duct segment is fixed in the seismic isolation zone of the building structure, and the other duct segment is fixed in the non-seismic isolation zone of the building structure, forming a seismic isolation joint between the seismic isolation zone and the non-seismic isolation zone;

[0006] A connecting segment is provided between the two duct segments and is arranged in the seismic isolation joint in a horizontal or vertical direction. The connecting segment includes multiple flexible duct sections and support springs arranged coaxially. Flanges are formed at both ends of the flexible duct. Adjacent flexible duct sections are connected by flanges. Multiple support springs are connected between the flanges at both ends of each flexible duct section. The multiple support springs are arranged along the circumferential direction of the flanges. The number of support springs on adjacent flexible duct sections is different.

[0007] Furthermore, the connecting segments are arranged vertically, and the number of flexible ducts is at least three. The number of support springs on odd-numbered flexible ducts is the same, and the number of support springs on even-numbered flexible ducts is the same. The number of support springs on odd-numbered flexible ducts is greater than the number of support springs on even-numbered flexible ducts.

[0008] Furthermore, the connecting segment is arranged in a horizontal direction, and the connecting segment also includes a support plate disposed below the connecting segment. The opposite sides of the support plate are suspended from the ceiling of the building structure by hangers. Multiple sliding trolleys are movably disposed on the support plate, and the flanges of two adjacent flexible air ducts are fixed to the sliding trolleys.

[0009] Furthermore, the number of flexible duct sections is at least five. The number of support springs on odd-numbered flexible duct sections is the same, and the number of support springs on even-numbered flexible duct sections is the same. The number of support springs on odd-numbered flexible duct sections is greater than the number of support springs on even-numbered flexible duct sections.

[0010] Furthermore, the flexible duct is rectangular in shape, and multiple support springs are respectively provided on the four sides of the flexible duct in the circumferential direction.

[0011] Furthermore, multiple support springs are equally spaced on the side of the flexible duct.

[0012] Furthermore, the sliding trolley is arranged along the width direction of the connecting segment.

[0013] This invention provides a construction method for a seismic isolation duct structure with ultra-large displacement, comprising the following steps:

[0014] One duct segment is fixed in the seismic isolation zone of the building structure, and another duct segment is fixed in the non-seismic isolation zone of the building structure.

[0015] Multiple sections of flexible ductwork are connected together using flanges;

[0016] Multiple support springs are connected between the flanges at both ends of each flexible duct section to form a connecting segment. The multiple support springs are arranged along the circumferential direction of the flanges, so that the multiple flexible duct sections are coaxially arranged.

[0017] The connecting segment is placed between the isolation zone and the non-isolation zone to form an isolation joint, and the connecting segment is connected between the two duct segments.

[0018] The beneficial effects of this invention lie in the fact that the connecting segments of the ultra-large displacement seismic isolation duct structure are composed of "multi-section" flexible ducts, overturning the traditional "single-section" structure of seismic isolation ducts. The multi-section structure allows for more uniform "folding" of the seismic isolation duct, not only improving its appearance but also preventing the seismic isolation module from lacking automatic recovery function or failing to recover properly after an earthquake. The ultra-large displacement seismic isolation duct structure of this invention has a displacement exceeding 800mm and a deformation exceeding 400mm.

[0019] The ultra-large displacement seismic isolation duct structure of this invention features support springs installed on the flanges of all four sides of each flexible duct section. This is fundamentally different from the spring installation structures of all other seismic isolation duct inventions. The function of the support springs is to maintain the normal length of each flexible duct section under non-earthquake conditions, ensuring a good appearance after installation. During an earthquake, they partially absorb seismic energy, ensuring the seismic isolation duct does not shake too violently and can exert its displacement capacity under the earthquake's impact without damage. Furthermore, after the earthquake, the seismic isolation duct can quickly return to its original position under the action of the springs. On the other hand, by varying the number of support springs installed on the flexible duct, adaptive deformation of the connecting segments can be induced during an earthquake. Attached Figure Description

[0020] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0021] Figure 1 This is a schematic diagram of the ultra-large displacement vibration isolation duct structure according to the first embodiment of the present invention.

[0022] Figure 2 This is a front view of the ultra-large displacement vibration isolation duct structure according to the first embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram of the ultra-large displacement vibration isolation duct structure according to the second embodiment of the present invention.

[0024] Figure 4 This is a front view of the ultra-large displacement vibration isolation duct structure according to the second embodiment of the present invention.

[0025] Figure 5 This is a schematic diagram of the connecting segment of the second embodiment of the present invention. Detailed Implementation

[0026] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] First Embodiment

[0029] Reference Figure 1 and Figure 2As shown, the present invention provides a vibration isolation duct structure with ultra-large displacement, comprising: duct segment 1 and connecting segment 2.

[0030] The duct segment 1 consists of two sections, one of which is fixed in the seismic isolation zone of the building structure, and the other is fixed in the non-seismic isolation zone of the building structure. A seismic isolation joint is formed between the seismic isolation zone and the non-seismic isolation zone.

[0031] Connecting segment 2 is installed in the seismic isolation joint along the horizontal or vertical direction. Connecting segment 2 connects the two duct segments.

[0032] Specifically, the connecting segment 2 includes multiple coaxially arranged flexible duct sections 21 and support springs 22. Flanges 23 are formed at both ends of the flexible duct sections 21. Adjacent flexible duct sections 21 are connected via flanges 23. Multiple support springs 22 are connected between the flanges 23 at both ends of each flexible duct section 21. The multiple support springs 22 are arranged along the circumferential direction of the flanges 23. The number of support springs 22 on adjacent flexible duct sections 21 is different.

[0033] In this embodiment, the flexible duct 21 is rectangular in shape. The sliding trolley 26 is arranged along the width direction of the connecting segment 2.

[0034] In this embodiment, the connecting segment 2 is arranged vertically. The number of flexible ducts 21 is at least three. Figure 1 For example, the number of flexible duct sections is 3. The number of support springs 22 on odd-numbered flexible duct sections 21 is the same. The number of support springs 22 on even-numbered flexible duct sections 21 is the same. The number of support springs 22 on odd-numbered flexible duct sections 21 is greater than the number of support springs 22 on even-numbered flexible duct sections 21.

[0035] Multiple support springs 22 are provided on the four sides of the flexible duct 21 in the circumferential direction.

[0036] Preferably, multiple support springs 22 are equally spaced on the side of the flexible duct 21.

[0037] In this embodiment, each side of the odd-numbered flexible duct sections is provided with three support springs. The support springs are helical springs. Each side of the even-numbered flexible duct sections is provided with two support springs.

[0038] The ultra-large displacement vibration isolation duct structure in this embodiment is suitable for vertical installation. The vertically installed connecting segment consists of 3 flexible duct sections. The maximum allowable displacement of each flexible duct section is 1 / 3 (266.7) mm of the entire vibration isolation module. The flexible duct sections are connected to each other and to each other via flange bolts.

[0039] Each section of the flexible duct is a folded flexible duct with angle steel flanges at both ends. These angle steel flanges are two sizes larger than those of ordinary ducts of the same specifications. The inner diameter (clearance) of the flexible duct is the same as that of an ordinary duct. The flanges at both ends of the two side sections (sections 1 and 3) are connected by 12 support springs, thus supporting each section of the flexible duct. The middle section of the flexible duct is connected by 8 support springs, thus supporting the entire section.

[0040] In this embodiment, the function of the support springs is to maintain the normal length of each flexible duct section during non-earthquake periods to ensure a good appearance after installation. During an earthquake, the springs in each flexible duct section can partially absorb the seismic energy, preventing excessive shaking and allowing the flexible duct to maintain its displacement capacity under the earthquake's force, thus preventing damage. Furthermore, after the earthquake, the flexible duct can quickly return to its original state under the action of the springs.

[0041] The springs of each flexible duct section are installed at the outer 1 / 3 of the angle steel flange of the flexible duct. The purpose is to ensure that the support springs of the flexible duct do not come into contact with the body of the flexible duct, so as to avoid or reduce the wear caused by friction between the flexible duct and the support springs.

[0042] This invention provides a construction method for a seismic isolation duct structure with ultra-large displacement, characterized by the following steps:

[0043] S1. Fix one duct segment 1 to the seismic isolation zone of the building structure, and fix another duct segment to the non-seismic isolation zone of the building structure.

[0044] S2. Connect the multiple flexible air duct sections 21 together using flanges 23.

[0045] S3. Connect multiple support springs 22 between the flanges 23 at both ends of each flexible duct 21 to form a connecting segment 2. The multiple support springs 22 are arranged along the circumferential direction of the flanges 23, so that the multiple flexible ducts 21 are coaxially arranged.

[0046] S4. Place the connecting segment 2 between the isolation zone and the non-isolation zone to form an isolation joint, and connect the connecting segment 2 between the two duct segments.

[0047] Second Embodiment

[0048] Reference Figures 3 to 5 As shown, the present invention provides a vibration isolation duct structure with ultra-large displacement, comprising: duct segment 1 and connecting segment 2.

[0049] The duct segment 1 consists of two sections, one of which is fixed in the seismic isolation zone of the building structure, and the other is fixed in the non-seismic isolation zone of the building structure. A seismic isolation joint is formed between the seismic isolation zone and the non-seismic isolation zone.

[0050] Connecting segment 2 is installed in the seismic isolation joint along the horizontal or vertical direction. Connecting segment 2 connects the two duct segments.

[0051] Specifically, the connecting segment 2 includes multiple coaxially arranged flexible duct sections 21 and support springs 22. Flanges 23 are formed at both ends of the flexible duct sections 21. Adjacent flexible duct sections 21 are connected via flanges 23. Multiple support springs 22 are connected between the flanges 23 at both ends of each flexible duct section 21. The multiple support springs 22 are arranged along the circumferential direction of the flanges 23. The number of support springs 22 on adjacent flexible duct sections 21 is different.

[0052] In this embodiment, the flexible duct 21 is rectangular in shape. The sliding trolley 26 is arranged along the width direction of the connecting segment 2.

[0053] In this embodiment, the connecting segment 2 is arranged in a horizontal direction. The connecting segment 2 also includes a support plate 24 disposed below the connecting segment 2. The opposite sides of the support plate 24 are suspended from the ceiling of the building structure by hangers 25. Multiple sliding trolleys 26 are movably disposed on the support plate 24. The flanges 23 of two adjacent flexible air ducts 21 are fixed to the sliding trolleys 26.

[0054] The number of flexible ducts 21 is at least five. The number of support springs 22 on odd-numbered flexible ducts 21 is the same, the number of support springs 22 on even-numbered flexible ducts 21 is the same, and the number of support springs 22 on odd-numbered flexible ducts 21 is greater than the number of support springs 22 on even-numbered flexible ducts 21.

[0055] The flexible duct 21 is rectangular in shape. Multiple support springs 22 are provided on the four sides of the flexible duct 21 in the circumferential direction.

[0056] Preferably, multiple support springs 22 are equally spaced on the side of the flexible duct 21.

[0057] The flexible duct consists of 5 sections. The support springs of sections 1, 3, and 5 are installed in the same way as the two side sections of the vertically installed flexible duct in the first embodiment. The support springs of sections 2 and 4 are installed in the same way as the middle section of the vertically installed flexible duct in the first embodiment. The lower end of the flange of each flexible duct section is fixed on a sliding trolley on the support plate (the sliding trolley can slide freely on the support plate). The purpose of this is to ensure the straightness and durability of the vibration isolation duct installation.

[0058] This invention provides a construction method for a seismic isolation duct structure with ultra-large displacement, comprising the following steps:

[0059] S10. Fix one duct segment 1 to the seismic isolation zone of the building structure, and fix the other duct segment to the non-seismic isolation zone of the building structure.

[0060] S20. Connect multiple flexible air duct sections 21 together using flange 23.

[0061] Before installing the flexible duct, a support plate is suspended from the ceiling of the building structure in the seismic isolation zone. The elevation of the support plate is lower than the bottom elevation of the flexible duct.

[0062] After the support plate is installed, a sliding trolley is movably mounted on the support plate.

[0063] The sliding trolley includes a base and two rows of rollers mounted on the base. The base is positioned along the width of the flexible duct. The two rows of rollers are positioned along the width of the duct. The rollers are omnidirectional casters.

[0064] Multiple flexible duct sections 21 are connected together by flanges 23, and the flanges of the flexible ducts are placed on a sliding trolley.

[0065] S30. Multiple support springs 22 are connected between the flanges 23 at both ends of each flexible duct 21 to form a connecting segment 2. The multiple support springs 22 are arranged along the circumferential direction of the flanges 23, so that the multiple flexible ducts 21 are coaxially arranged.

[0066] After the support spring is installed on the flexible duct, the flanges of two adjacent flexible duct sections are fixedly installed on the trolley, so that the flexible duct can slide in all directions on the support plate.

[0067] S40. The connecting segment 2 is placed between the isolation zone and the non-isolation zone to form an isolation joint, and the connecting segment 2 is connected between the two air duct segments.

[0068] The flexible ducts at both ends of the assembled connecting segment are connected to the duct segment via flanges.

[0069] The connecting segments of the ultra-large displacement seismic isolation duct structure of this invention are composed of "multi-section" flexible ducts, which subverts the traditional "single-section" structure of seismic isolation ducts. The multi-section structure makes the "folding" parts of the seismic isolation duct (module) more uniform, which not only improves the appearance of the seismic isolation duct, but also prevents the seismic isolation module from lacking automatic recovery function or failing to recover properly after an earthquake.

[0070] Traditional vibration isolation ducts allow a deformation of no more than 400 mm, while the vibration isolation duct structure of this invention with ultra-large displacement allows a deformation of 800 mm. Using this theory, the deformation of the vibration isolation duct can be further increased.

[0071] Traditional seismic isolation ducts are based on the seismic isolation duct itself. The research on the seismic isolation duct structure with ultra-large displacement of this invention goes beyond the seismic isolation duct itself, and subverts the shortcomings of traditional seismic isolation ducts that cannot adapt to large earthquakes, large displacements and are difficult to automatically reset.

[0072] The ultra-large displacement seismic isolation duct structure of this invention features support springs installed on the flanges of all four sides of each flexible duct section. This is fundamentally different from the spring installation structures of all other seismic isolation duct inventions. The function of the support springs is to maintain the normal length of each flexible duct section under non-earthquake conditions, ensuring a good appearance after installation. During an earthquake, they partially absorb seismic energy, ensuring the seismic isolation duct does not shake too violently and can exert its displacement capacity under the earthquake's impact without damage. Furthermore, after the earthquake, the seismic isolation duct can quickly return to its original position under the action of the springs. On the other hand, by varying the number of support springs installed on the flexible duct, adaptive deformation of the connecting segments can be induced during an earthquake.

[0073] This invention presents a novel approach to ultra-large displacement vibration isolation duct structures, proposing different structural forms for horizontal and vertical installations of vibration isolation ducts. In horizontal installation, a support plate and sliding trolley are used to support the vibration isolation duct, improving both the aesthetic appearance and vibration isolation performance of the installation.

[0074] This invention, a seismic isolation duct structure with ultra-large displacement, solves the problem of ultra-large displacement seismic isolation in ductwork. The seismic isolation capability of this structure for the duct system is no less than that of a civil engineering structure with seismic isolation bearings and dampers, transforming the theoretical concept of ultra-large displacement seismic isolation ducts into a safe and reliable reality. This structure is safe, reliable, and durable, requiring no repair after an earthquake. It can be applied to various ventilation and air conditioning systems, especially medical and fire protection systems. Its highly reliable seismic isolation performance and automatic reset function ensure uninterrupted ventilation, potentially saving countless lives.

[0075] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A vibration-isolation duct structure with ultra-large displacement, characterized in that, include: Two duct segments are provided, one duct segment is fixed in the seismic isolation zone of the building structure, and the other duct segment is fixed in the non-seismic isolation zone of the building structure, forming a seismic isolation joint between the seismic isolation zone and the non-seismic isolation zone; A connecting segment is arranged horizontally in the seismic isolation joint between the two duct segments. The connecting segment includes multiple flexible duct sections and support springs arranged coaxially. Flanges are formed at both ends of the flexible duct. Adjacent flexible duct sections are connected by flanges. Multiple support springs are connected between the flanges at both ends of each flexible duct section. The flexible duct is cuboid in shape. Multiple support springs are respectively arranged on the four sides of the flexible duct in the circumferential direction. The number of support springs arranged on adjacent flexible duct sections is different. The connecting segment also includes a support plate disposed below the connecting segment. The opposite sides of the support plate are suspended from the ceiling of the building structure by hangers. Multiple sliding trolleys are movably disposed on the support plate, and the flanges of two adjacent flexible air ducts are fixed to the sliding trolleys.

2. The ultra-large displacement vibration isolation duct structure according to claim 1, characterized in that, The number of flexible duct sections is at least five. The number of support springs on odd-numbered flexible duct sections is the same, and the number of support springs on even-numbered flexible duct sections is the same. The number of support springs on odd-numbered flexible duct sections is greater than the number of support springs on even-numbered flexible duct sections.

3. The ultra-large displacement vibration isolation duct structure according to claim 1, characterized in that, Multiple support springs are equally spaced on the side of the flexible duct.

4. The ultra-large displacement vibration isolation duct structure according to claim 1, characterized in that, The sliding trolley is arranged along the width direction of the connecting segment.

5. A construction method for a seismic isolation duct structure with ultra-large displacement as described in any one of claims 1 to 4, characterized in that, Includes the following steps: One duct segment is fixed in the seismic isolation zone of the building structure, and another duct segment is fixed in the non-seismic isolation zone of the building structure. Multiple sections of flexible ductwork are connected together using flanges; Multiple support springs are connected between the flanges at both ends of each flexible duct section to form a connecting segment, so that multiple flexible duct sections are coaxially arranged. The connecting segment is placed between the isolation zone and the non-isolation zone to form an isolation joint, and the connecting segment is connected between the two duct segments.

Images