A weak-connected floor slab vibration reduction self-resetting system and construction method

Abstract

The present application discloses a weak-connected floor vibration reduction and self-resetting system and a construction method. The weak-connected floor vibration reduction and self-resetting system includes a first damping device and a second damping device. The first damping device is arranged between the elevator core tube and the high-rise residential building, and is used to apply damping to the high-rise residential building and the elevator core tube connected to the first damping device along the Y direction. The second damping device is arranged between adjacent high-rise residential buildings, and is used to apply damping to the high-rise residential building connected to the second damping device along the W direction. By using the first damping device and the second damping device to increase damping between the high-rise residential building and the elevator core tube, on the one hand, the connection between the elevator core tube and the high-rise residential building and between adjacent high-rise residential buildings can be strengthened, thereby improving the overall strength. On the other hand, when encountering an earthquake or typhoon, the high-rise residential building or the elevator core tube can be reduced in vibration by damping energy absorption, thereby improving the wind and earthquake resistance of the entire building.

Description

Technical Field

[0001] The present application relates to the technical field of building vibration reduction, and in particular to a weak-connected floor vibration reduction self-resetting system and a construction method. Background Art

[0002] Among various residential types, the elevator core-peripheral high-rise residential system is widely used because it can efficiently utilize space and optimize apartment layout. Figure 1 The characteristic of this system is that the shear walls on the periphery of the central area and the shear walls on the internal elevator shaft form the elevator core tube 1, and high-rise residential buildings 2 are arranged on the periphery. The two are integrated by a narrow floor slab 3 with a limited width (usually less than 5m).

[0003] The high-rise residential buildings constructed based on this system form an elevator core tube-peripheral high-rise residential buildings. On the one hand, the core tube provides strong lateral stiffness and bears the main horizontal loads; on the other hand, the multi-limb plane layout with peripheral extensions enables each apartment to have multiple lighting and ventilation surfaces, and the indoor space is highly private, avoiding the interference caused by visual penetration in the traditional through-type layout, and significantly improving the living experience.

[0004] However, this type of structural system faces special construction challenges in actual engineering. Due to the difference in the load-bearing systems between the core tube and the surrounding high-rise residential buildings, the two can only achieve structural coordination through a narrow connecting floor. This type of floor is known in the industry as a "weakly connected floor." Despite its limited width, it plays a key role in transmitting horizontal loads and coordinating structural deformation. It is the core weak link in ensuring the load-bearing integrity of the overall structure. Once the weakly connected floor is insufficiently strong or improperly designed, stress concentration or even localized damage is likely to occur, thereby weakening the integrity of the entire structural system. Studies have shown that when different phases of movement occur between the elevator core tube and the surrounding high-rise residential buildings under the action of earthquakes or strong winds, stress concentration is prone to occur at the weakly connected floor. In other words, weak connection areas often become weak links in earthquake or wind resistance. If improperly designed, they may lead to overall structural damage and even trigger the risk of progressive collapse.

[0005] According to relevant standards, weakly connected floor slabs must meet the performance goal of "elasticity in moderate earthquakes and non-yielding in major earthquakes", that is, they must maintain an elastic working state under moderate earthquakes and not undergo plastic failure under major earthquakes, so as to ensure the toughness of the structure under extreme loads. Specific technical measures include thickening the floor slabs, increasing the double-layer two-way reinforcement ratio, strengthening the reinforcement of the weakly connected floor slab edge beams, setting up reinforced areas at the top of the structure for weakly connected floor slabs, and setting up edge restraint members for the shear walls supporting the weakly connected floor slab edge beams. By enhancing the bearing capacity and ductility of the floor slab, its bearing capacity and energy dissipation capacity under dynamic loads can be improved. Behind these requirements is not only the adaptive design for earthquake- and typhoon-prone environments, but also the strict control of the bottom line of human safety.

[0006] In recent years, with the intensification of global climate change and the frequent occurrence of typhoon disasters, new challenges have been brought to this type of residential structure. Under strong typhoons, the top floors are subject to significant wind loads due to the height effect, and the surrounding multi-limbed units are prone to large overall shaking and vibration due to their large air-facing surfaces and large overhangs, causing obvious discomfort to residents. Although the seismic design of traditional weak-connected floor slabs has taken horizontal loads into account, there is still room for improvement in their wind resistance in the extreme wind environment of frequent typhoons. How to further improve the wind resistance of weak-connected floor slabs on the basis of meeting existing seismic specifications has become a technical problem that needs to be solved urgently in current engineering design.

[0007] Faced with the dual demands of structural earthquake resistance and wind resistance, it is often necessary to strengthen the floor slabs of the top few floors and make changes to the reinforcement, thickness, width, etc. of the floor slabs. However, this method is inconvenient for high-altitude construction and has high costs. Summary of the Invention

[0008] The purpose of this application is to provide a weak-connected floor vibration reduction and self-resetting system and construction method to improve the inconvenience of the existing floor seismic resistance structure.

[0009] In the first aspect, the present application provides a weakly connected floor slab vibration reduction and self-resetting system and construction method, which adopts the following technical solutions:

[0010] A weak-connected floor vibration reduction and self-resetting system defines the connection direction of the elevator core tube and the high-rise residential building as the X direction, defines the direction perpendicular to the X direction on the horizontal plane as the Y direction, and defines the connection direction of adjacent high-rise residential buildings as the W direction. It includes a first damping device and a second damping device. The first damping device is arranged between the elevator core tube and the high-rise residential building, and is used to apply damping to the high-rise residential building and the elevator core tube connected to the first damping device along the Y direction. The second damping device is arranged between adjacent high-rise residential buildings, and is used to apply damping to the high-rise residential building connected to the second damping device along the W direction.

[0011] By adopting the above technical solution, the first damping device and the second damping device are used to increase the damping between the high-rise residential buildings and the elevator core tube. On the one hand, it can strengthen the connection between the elevator core tube and the high-rise residential buildings and between adjacent high-rise residential buildings, thereby improving the overall strength. On the other hand, when encountering earthquake waves or typhoons, the high-rise residential buildings or elevator core tubes can be reduced in vibration by damping energy absorption, thereby improving the wind and earthquake resistance of the entire building. In addition, since each high-rise residential building is independently arranged and individually connected to the elevator core tube, the W direction is inclined relative to the Y direction. This allows the first damping device and the second damping device to cooperate with each other during operation despite their respective main action directions being different, thereby improving the overall vibration reduction effect.

[0012] Optionally, the first damping device is arranged below the floor, or on both sides below the floor along the Y direction.

[0013] Optionally, the first damping device includes a first connecting member, a second connecting member and a viscous damper, the first connecting member is connected to the elevator core tube, the second connecting member is connected to the high-rise residential building, and the viscous damper is connected between the first connecting member and the second connecting member along the Y direction.

[0014] Through the above technical solution, viscous dampers are generally used to achieve damping and vibration reduction between the upper and lower floors of a building, mainly used to resist seismic shear waves, and are suitable for situations with large deformation differences. Although previous high-rise residential buildings were connected to other buildings through floor slabs, they were generally not set up independently, which resulted in a small deformation difference between high-rise residential buildings and adjacent buildings. The high-rise residential buildings in this application have a large deformation difference with adjacent buildings due to their independent setting, so they can be reduced in vibration by viscous dampers. Compared with the structural improvement of the floor slab itself, the viscous damper not only has a lower installation cost, but is also more convenient. It can be installed in a designated position according to the stress conditions, and achieve better vibration reduction effects at a lower cost. In addition, the viscous damper can be used not only during building construction, but also can be installed during maintenance, and is more flexible to use.

[0015] Optionally, the second damping device includes a prestressed steel cable and anchoring mechanisms provided at both ends of the prestressed steel cable, and the anchoring mechanisms are installed on a high-rise residential building.

[0016] Through the above technical solution, tension is applied to adjacent high-rise residential buildings through prestressed steel cables, thereby improving the connection strength between adjacent high-rise buildings.

[0017] Optionally, the anchoring mechanism includes a damping assembly, which includes a fixed cylinder, a movable cylinder and a baffle. The fixed cylinder is installed on a high-rise residential building, and the movable cylinder slides in the fixed cylinder. The movable cylinder is connected to a movable rod along its own axial sliding. Both ends of the movable rod extend to the outside of the movable cylinder, one end of the movable rod abuts against the baffle, and the other end passes through the fixed cylinder. The prestressed steel cable passes through the movable rod and is connected to the baffle. A first spring abuts between the baffle and the movable cylinder, and a second spring abuts between the movable cylinder and the fixed cylinder. The first spring and the second spring are both mounted on the movable rod.

[0018] Through the above technical solution, the first spring and the second spring can apply resistance to the prestressed steel cable to ensure the tension applied to the adjacent high-rise residential buildings. At the same time, when the high-rise residential buildings shake, the first spring and the second spring can absorb energy through the expansion and contraction process, thereby achieving vibration reduction. Compared with the general prestressed steel cable structure, the present application not only has the function of applying prestress, but also can absorb energy and reduce vibration, and at the same time help high-rise buildings to quickly reset after shaking. At the same time, the first spring and the second spring are arranged on both sides of the movable cylinder, which can reduce the unilateral stroke, ensure the safety and stability of use, and improve the energy absorption effect.

[0019] Optionally, a sealed cavity is provided in the movable cylinder, and a piston is connected to the side wall of the movable rod. The piston fits against the side wall of the sealed cavity to separate the sealed cavity into two cavities along the radial direction of the movable rod.

[0020] By adopting the above technical solution, when the movable rod moves relative to the movable cylinder, the piston compresses the air in the sealed cavity, further increasing the resistance to the prestressed steel cable.

[0021] Optionally, the anchoring mechanism also includes an intelligent tensioning component, which includes a tensioning jack, a first anchor and a second anchor. The prestressed steel cable passes through the baffle, the first anchor and the second anchor. A pressure sensor is provided between the first anchor and the baffle. The pressure sensor is electrically connected to the tensioning jack, and the tensioning jack is electrically connected to the second anchor. The first anchor and the second anchor both have an anchored state and a released state, and can switch between the anchored state and the released state.

[0022] By adopting the above technical solution, the first anchor anchors the prestressed steel cable under normal conditions so that the damping assembly can operate normally. When the prestressed steel cable fatigues and relaxes, the pressure sensor detects that the pressure is too low, and the second anchor anchors the prestressed steel cable. At this time, the first anchor releases the anchoring of the prestressed steel cable, and the tensioning jack works to tension the prestressed steel cable. After tensioning is completed, the first anchor continues to anchor the prestressed steel cable to maintain the operation of the damping assembly.

[0023] Optionally, the first anchor includes a first anchor tube and two first anchor plates, the inner hole of the first anchor tube is a tapered hole, the two first anchor plates are arranged in the tapered hole and fit with the tapered hole, the large end of the tapered hole is set toward the second anchor, and the prestressed steel cable passes between the two first anchor plates; the first anchor also includes a telescopic part, a slider and a pull rod, a sliding groove is provided on the side wall of the tapered hole, the slider slides in the sliding groove, and a slot for the slider to be inserted is provided on the side wall of the first anchor plate, the end of the slider away from the slot is connected to the pull rod, and the end of the pull rod away from the slider is connected to the movable end of the telescopic part, and a third spring is sleeved on the pull rod, and the third spring is arranged between the slider and the bottom of the sliding groove; when the slider is stuck in the slot, the first anchor is in an anchored state.

[0024] Through the above technical solution, under normal circumstances, the two first anchor plates clamp the prestressed steel cable. At this time, the slider can limit the movement of the first anchor plate to prevent the first anchor plate from loosening. When the prestressed steel cable needs to be tensioned, the slider is driven to move by the telescopic member to disengage the slider from the slot. At this time, the second anchor can pull the prestressed steel cable to move and drive the first anchor plate to move slightly in the direction away from the damping component, thereby causing the first anchor plate to loosen its clamping of the prestressed steel cable.

[0025] Optionally, the second anchor member includes a second anchor cylinder and an anchor rod, the second anchor cylinder is connected to the movable end of the tensioning jack, the anchor rod is rotatably connected to the second anchor cylinder, and multiple pressure teeth are provided along the circumference of the second anchor cylinder, and the side wall of the anchor rod is provided with a pressure tooth for contacting the prestressed steel cable; the second anchor member also includes a gear and a rack that mesh with each other, the gear is coaxially rotatably connected to the second anchor cylinder, and the side wall of the gear is provided with a shift rod for contacting the anchor rod, the number of the shift rods is equal to the number of the anchor rods, and corresponds one-to-one with the anchor rods when the gear rotates, the shift rod pushes the anchor rod to rotate so that multiple anchor rods cooperate to clamp the prestressed steel cable; the movable end of the telescopic member is connected to a slide rail, the pull rod is connected to a first sliding block, and the rack is connected to a second sliding block, the first sliding block and the second sliding block both slide in the rail groove of the slide rail, the first sliding block and the end facing the pull rod are provided with anti-slip teeth, and the end of the second sliding block facing the rack is provided with a ball bearing.

[0026] When the cam is in a state of being stretched, the first gear is tightened and the second gear is tightened, so that the cam is tightened and the gear is tightened, so that the cam is tightened and the gear is tightened.

[0027] A construction method, based on the above-mentioned weak-connected floor vibration reduction and self-resetting system, includes the following steps:

[0028] S1. Construct the first damping device between the elevator core and the high-rise residential building;

[0029] S2. Construct a second damping device between adjacent high-rise residential buildings;

[0030] S3. The first damping device and the second damping device are provided in multiple groups along the height direction and are installed on the top of the high-rise residential building from the third to the sixth floor from the top down.

[0031] In summary, this application includes at least one of the following beneficial technical effects:

[0032] 1. Utilizing the first and second damping devices to increase damping between high-rise residential buildings and the elevator core tube strengthens the connection between the elevator core tube and the high-rise residential buildings, as well as between adjacent high-rise residential buildings, thereby improving overall strength. Furthermore, when encountering earthquake waves or typhoons, the high-rise residential buildings or elevator core tubes can be damped by absorbing energy through damping, thereby improving the overall building's wind and earthquake resistance. Furthermore, since each high-rise residential building is independently constructed and individually connected to the elevator core tube, the W direction is inclined relative to the Y direction. This allows the first and second damping devices, despite their respective primary operating directions, to cooperate with each other during operation, thereby enhancing the overall vibration reduction effect.

[0033] 2. Viscous dampers are generally used to achieve damping and vibration reduction between the upper and lower floors of a building, mainly for resisting seismic shear waves, and are suitable for situations with large deformation differences. Although previous high-rise residential buildings were connected to other buildings through floor slabs, they were generally not installed independently, which resulted in a small deformation difference between the high-rise residential building and adjacent buildings. However, the high-rise residential building in this application is independently installed, resulting in a large deformation difference between the high-rise residential building and adjacent buildings. Therefore, viscous dampers can be used for vibration reduction. Compared with the structural improvement of the floor slab itself, viscous dampers not only have lower installation costs, but are also more convenient. They can be installed in a specified location according to the stress conditions, achieving better vibration reduction effects at a lower cost. In addition, viscous dampers can be used not only during construction but also during maintenance, making them more flexible to use.

[0034] 3. The first spring and the second spring can apply resistance to the prestressed steel cable, ensuring the tension applied to the adjacent high-rise residential building. At the same time, when the high-rise residential building shakes, the first spring and the second spring can absorb energy through the process of expansion and contraction, thereby achieving vibration reduction. Compared with the general prestressed steel cable structure, the present application not only has the function of applying prestress, but also can absorb energy and reduce vibration, and at the same time help the high-rise building to quickly reset after shaking. At the same time, the first spring and the second spring are arranged on both sides of the movable cylinder, which can reduce the unilateral travel, ensure the safety and stability of use, and improve the energy absorption effect. When the movable rod moves relative to the movable cylinder, the piston compresses the air in the sealed chamber, further increasing the resistance to the prestressed steel cable;

[0035] 4. Under normal conditions, the first anchor fastens the prestressed steel cable to ensure the normal operation of the damping assembly. When the prestressed steel cable fatigues and relaxes, the pressure sensor detects that the pressure is too low, and the second anchor fastens the prestressed steel cable. At this time, the first anchor releases the anchoring of the prestressed steel cable, and the tensioning jack works to tension the prestressed steel cable. After tensioning is completed, the first anchor continues to anchor the prestressed steel cable to maintain the operation of the damping assembly.

[0036] 5. Under normal circumstances, the two first anchoring pieces clamp the prestressed steel cable. At this time, the slider can limit the movement of the first anchoring pieces to prevent the first anchoring pieces from loosening. When the prestressed steel cable needs to be tensioned, the slider is driven by the telescopic member to move, so that the slider is disengaged from the slot. At this time, the second anchor can pull the prestressed steel cable to move, and drive the first anchoring piece to move slightly away from the damping assembly, thereby causing the first anchoring piece to loosen its grip on the prestressed steel cable.

[0037] When the cam is in a state of tension, the first gear is engaged with the first link, and the second gear is engaged with the first link, and the gear is engaged with the first link, and the gear is engaged with the first link, and the gear is engaged with the first link, and the gear is engaged with the first link, and the gear is engaged with the first link, and the gear is engaged with the first link, and the gear is engaged with the first link, and the gear is engaged with the first link, and the gear is engaged with the first link, and the gear is engaged with the BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a schematic diagram showing the positional relationship among an elevator core, a floor slab, and a high-rise residential building in the background art.

[0039] Figure 2 It is a schematic top view of the entire weak-connected floor vibration reduction and self-resetting system in the first embodiment of the present invention.

[0040] Figure 3 This is a schematic diagram illustrating a high-rise residential building subjected to shear force in the Y direction in the first embodiment of the present invention.

[0041] Figure 4 This is a schematic diagram illustrating the in-plane bending moment in direction B borne by a high-rise residential building in the first embodiment of the present invention.

[0042] Figure 5 It is a cross-sectional schematic diagram of the second damping device in the first embodiment of the present invention.

[0043] Figure 6 It is a three-dimensional schematic diagram of the second damping device in the first embodiment of the present invention.

[0044] Figure 7 It is a cross-sectional schematic diagram of the intelligent tensioning component in the first embodiment of the present invention.

[0045] Figure 8 yes Figure 7 A partial enlarged schematic diagram of part A in the middle.

[0046] Figure 9 It is a partial three-dimensional schematic diagram of the second anchoring piece in the first embodiment of the present invention.

[0047] Figure 10 It is a schematic top view of the overall weak-connected floor vibration reduction and self-resetting system in the second embodiment of the present invention.

[0048] In the figure, 1, elevator core tube; 2, high-rise residential building; 3, floor; 4, first damping device; 41, first connecting member; 42, second connecting member; 43, viscous damper; 5, second damping device; 51, fixed tube; 52, movable tube; 53, movable rod; 54, baffle; 55, prestressed steel cable; 56, first spring; 57, second spring; 58, piston; 59, intelligent tensioning component; 591, tensioning jack; 592, first anchor; 5921, first anchor tube; 5922, first anchor plate; 5923, telescopic Parts; 5924, slider; 5926, pull rod; 5927, slide; 5928, slot; 5929, third spring; 593, second anchor; 5931, second anchor cylinder; 5932, anchor rod; 5933, pressure tooth; 5934, gear; 5935, rack; 5936, shift rod; 5937, slide rail; 5938, first sliding block; 5939, second sliding block; 594, pressure sensor; 5941, anti-slip tooth; 5942, ball; 5943, ball; 595, retaining ring; 6, vacant area. DETAILED DESCRIPTION

[0049] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0050] In the description of the present invention, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like, indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "plurality" means two or more. In the description of the present invention, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be broadly understood, for example, to mean fixed, removable, or integral; mechanically or electrically connected; directly or indirectly through an intermediary; or internally connected between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In a first aspect, the present application discloses a weakly connected floor slab vibration reduction and self-resetting system.

[0052] Example 1: A weak connection floor vibration reduction self-reset system, referring to Figures 2 to 9 , define the connecting direction of the elevator core tube 1 and the high-rise residential building 2 as the X direction, define the direction perpendicular to the X direction on the horizontal plane as the Y direction, define the connecting direction of adjacent high-rise residential buildings 2 as the W direction, include a first damping device 4 and a second damping device 5, the first damping device 4 is arranged between the elevator core tube 1 and the high-rise residential building 2, and is used to apply damping to the high-rise residential building 2 and the elevator core tube 1 connected to the first damping device 4 along the Y direction, the second damping device 5 is arranged between the adjacent high-rise residential buildings 2, and is used to apply damping to the high-rise residential building 2 connected to the second damping device 5 along the W direction.

[0053] The first damping device 4 and the second damping device 5 are used to increase the damping between the high-rise residential building 2 and the elevator core tube 1. On the one hand, it can strengthen the connection between the elevator core tube 1 and the high-rise residential building 2 and between adjacent high-rise residential buildings 2, thereby improving the overall strength. On the other hand, when encountering earthquake waves or typhoons, it can reduce the vibration of the high-rise residential building 2 or the elevator core tube 1 by damping energy absorption, thereby improving the wind and earthquake resistance of the entire building. In addition, since each high-rise residential building 2 is independently arranged and individually connected to the elevator core tube 1, the W direction is inclined relative to the Y direction. This allows the first damping device 4 and the second damping device 5 to cooperate with each other during operation despite their respective main action directions being different, thereby improving the overall vibration reduction effect.

[0054] The first damping device 4 is provided below the floor 3, or provided on both sides of the floor 3 along the Y direction. When provided on both sides of the floor 3 along the Y direction, two groups of the first damping device 4 can be provided. Figure 3 The first damping device 4 helps the high-rise residential building 2 resist the shear force from the Y direction.

[0055] Specifically, the first damping device 4 includes a first connecting member 41, a second connecting member 42 and a viscous damper 43. The first connecting member 41 is connected to the elevator core tube 1, the second connecting member 42 is connected to the high-rise residential building 2, and the viscous damper 43 is connected between the first connecting member 41 and the second connecting member 42 along the Y direction. The viscous damper 43 is generally used to achieve damping and vibration reduction between the upper and lower floors of a building. It is mainly used to resist seismic shear waves and is suitable for situations where the deformation difference is large. Although the previous high-rise residential building 2 was also connected to other buildings through the floor 3, it was generally not set up independently, which made the deformation difference between the high-rise residential building 2 and the adjacent buildings smaller. The high-rise residential building 2 in this application has a large deformation difference with the adjacent buildings due to its independent setting, so it can be reduced by the viscous damper 43. Compared with the structural improvement of the floor 3 itself, the viscous damper 43 not only has a lower installation cost, but is also more convenient. It can be installed in a specified position according to the stress conditions to achieve better vibration reduction effect at a lower cost. In addition, the viscous damper 43 can not only be used during building construction, but can also be installed during maintenance, and is more flexible to use.

[0056] Specifically, the second damping device 5 includes a prestressed steel cable 55 and anchoring mechanisms at both ends of the prestressed steel cable 55, which are installed on the high-rise residential building 2. The prestressed steel cable 55 applies tension to the adjacent high-rise residential building 2, thereby improving the connection strength between adjacent high-rise buildings.

[0057] It should be noted that there is a vacant area 6 between the prestressed steel cable 55 and two adjacent floor slabs 3 and the elevator core tube 1 .

[0058] More specifically, the anchoring mechanism includes a damping assembly, which includes a fixed cylinder 51, a movable cylinder 52 and a baffle 54. The fixed cylinder 51 is installed on the high-rise residential building 2, and the movable cylinder 52 slides in the fixed cylinder 51. The movable cylinder 52 is connected to a movable rod 53 along its own axial sliding direction. Both ends of the movable rod 53 extend to the outside of the movable cylinder 52. One end of the movable rod 53 abuts against the baffle 54, and the other end passes through the fixed cylinder 51. The prestressed steel cable 55 passes through the movable rod 53 and is connected to the baffle 54. A first spring 56 abuts between the baffle 54 and the movable cylinder 52, and a second spring 57 abuts between the movable cylinder 52 and the fixed cylinder 51. The first spring 56 and the second spring 57 are both sleeved on the movable rod 53. The first spring 56 and the second spring 57 can apply resistance to the prestressed steel cable 55 to ensure the tension applied to the adjacent high-rise residential building 2. At the same time, when the high-rise residential building 2 shakes, the first spring 56 and the second spring 57 can absorb energy through the expansion and contraction process, thereby achieving vibration reduction. Compared with the general prestressed steel cable 55 structure, the present application not only has the function of applying prestress, but also can absorb energy and reduce vibration, and at the same time help high-rise buildings to quickly reset after shaking. At the same time, the first spring 56 and the second spring 57 are arranged on both sides of the movable cylinder 52, which can reduce the unilateral stroke, ensure the safety and stability of use, and improve the energy absorption effect.

[0059] It should be noted that a sealed chamber is defined within the movable cylinder 52, and a piston 58 is connected to the sidewall of the movable rod 53. The piston 58 engages the sidewall of the sealed chamber to divide the sealed chamber into two chambers along the radial direction of the movable rod 53. When the movable rod 53 moves relative to the movable cylinder 52, the piston 58 compresses the air within the sealed chamber, further increasing the resistance to the prestressed steel cable 55. Multiple pistons 58 can be provided on the same movable rod 53; in this embodiment, there are two pistons 58.

[0060] The combination of prestressed steel cables and damping components can not only exert tension on the high-rise residential building 2, but also help the high-rise residential building 2 resist horizontal torsional forces (such as Figure 4 In the B direction), if rigid connections (steel concrete beams or steel rods) are used between adjacent high-rise residential buildings 2, when the high-rise residential buildings 2 are subjected to torsional forces, it is very easy for the rigid connections to tear. However, the prestressed steel cables 55 can better adapt to this situation.

[0061] In addition, the anchoring mechanism also includes an intelligent tensioning component 59, which includes a tensioning jack 591, a first anchor 592 and a second anchor 593. The prestressed steel cable 55 passes through the baffle 54, the first anchor 592 and the second anchor 593. A pressure sensor 594 is provided between the first anchor 592 and the baffle 54. The pressure sensor 594 is electrically connected to the tensioning jack 591, and the tensioning jack 591 is electrically connected to the second anchor 593. The first anchor 592 and the second anchor 593 both have an anchored state and a released state, and can switch between the anchored state and the released state. Under normal circumstances, the first anchor 592 anchors the prestressed steel cable 55 so that the damping assembly can operate normally. When the prestressed steel cable 55 fatigues and relaxes, the pressure sensor 594 detects that the pressure is too low, and the second anchor 593 anchors the prestressed steel cable 55. At this time, the first anchor 592 releases the anchoring of the prestressed steel cable 55, and the tensioning jack 591 works to tension the prestressed steel cable 55. After tensioning is completed, the first anchor 592 continues to anchor the prestressed steel cable 55 to maintain the operation of the damping assembly.

[0062] More specifically, the first anchor 592 includes a first anchor tube 5921 and two first anchor plates 5922. The inner hole of the first anchor tube 5921 is a tapered hole. The two first anchor plates 5922 are arranged in the tapered hole and fit the tapered hole. The large end of the tapered hole is arranged toward the second anchor 593. The prestressed steel cable 55 passes between the two first anchor plates 5922. The first anchor 592 also includes a telescopic member 5923, a slider 5924 and a pull rod 5926. A sliding groove 5927 is provided on the side wall of the tapered hole. The slider 5924 slides on the sliding groove. In the groove 5927, a slot 5928 for the slider 5924 to be inserted into is provided on the side wall of the first anchoring piece 5922. The end of the slider 5924 away from the slot 5928 is connected to the pull rod 5926. The end of the pull rod 5926 away from the slider 5924 is connected to the movable end of the telescopic member 5923. A third spring 5929 is sleeved on the pull rod 5926. The third spring 5929 is provided between the slider 5924 and the bottom of the slide groove 5927. When the slider 5924 is stuck in the slot 5928, the first anchor 592 is in an anchored state. Normally, the two first anchoring pieces 5922 clamp the prestressed steel cable 55. At this time, the slider 5924 can restrict the movement of the first anchoring pieces 5922, preventing them from loosening. However, when the prestressed steel cable 55 needs to be tensioned, the slider 5924 is moved by the telescopic member 5923, disengaging the slider 5924 from the retaining slot 5928. At this point, the second anchor 593 can pull the prestressed steel cable 55 and slightly move the first anchoring piece 5922 away from the damping assembly, thereby releasing the first anchoring piece 5922 from its anchoring position on the prestressed steel cable 55. The length of the retaining slot 5928 is greater than the width of the slider 5924, allowing the first anchoring piece 5922 to move toward the movable cylinder 52 while anchoring the prestressed steel cable 55, thereby preventing any impact on the anchoring capacity of the first anchoring piece 5922.

[0063] The second anchor 593 includes a second anchor cylinder 5931 and an anchor rod 5932. The second anchor cylinder 5931 is connected to the movable end of the tensioning jack 591. The anchor rod 5932 is rotatably connected to the second anchor cylinder 5931 and is provided with a plurality of pressure teeth 5933 for contacting the prestressed steel cable 55 along the circumference of the second anchor cylinder 5931. The side wall of the anchor rod 5932 is provided with a pressure tooth 5933 for contacting the prestressed steel cable 55. The second anchor 593 also includes a gear 5934 and a rack 5935 that are meshed with each other. The gear 5934 is coaxially rotatably connected to the second anchor cylinder 5931. The side wall of the gear 5934 is provided with a shifting rod 5936 for contacting the anchor rod 5932. The number of the shifting rods 5936 is the same as that of the anchor rods 593 2 are equal in number and correspond one-to-one with the anchor rods 5932. When the gear 5934 rotates, the shifting rod 5936 pushes the anchor rods 5932 to rotate, causing the multiple anchor rods 5932 to cooperate and clamp the prestressed steel cable 55. The movable end of the telescopic member 5923 is connected to the slide rail 5937. The pull rod 5926 is connected to a first sliding block 5938, and the rack 5935 is connected to a second sliding block 5939. Both the first and second sliding blocks 5938 and 5939 slide within the grooves of the slide rail 5937. The first sliding block 5938 and the end facing the pull rod 5926 are equipped with anti-slip teeth 5941, and the end of the second sliding block 5939 facing the rack 5935 is equipped with a ball bearing 5942. The telescopic member 5923 can be an electric cylinder electrically connected to the pressure sensor 594. The first spring 56, the second spring 57, and the third spring 5929 can all be compression springs.

[0064] When the telescopic member 5923 works, it drives the slide rail 5937 to move, and then drives the slider 5924 to move, but also drives the rack 5935 to move, and the rack 5935 drives the gear 5934 to rotate, and then the gear 5934 drives the dial rod 5936 to rotate, and then drives the anchor rod 5932 to rotate and clamp the prestressed steel cable 55. At this time, the first sliding block 5938 is clamped on the slide rail 5937 due to the action of the anti-slip teeth 5941, so that the first anchor cylinder 5921 is temporarily fixed relative to the slide rail 5937, and then the tensioning jack 591 works, driving the second anchor 593 to move, and the prestressed steel cable 55 is tightened. When the prestressed cable 55 is tensioned, the first anchoring piece 5922 cannot prevent the prestressed cable 55 from moving. However, friction between the first anchoring piece 5922 and the prestressed cable 55 is always maintained. When the tension is released, the telescopic member 5923 returns to its original position. The slider 5924 then abuts against the side wall of the first anchoring piece 5922, and the second anchoring piece 593 releases its grip on the prestressed cable 55. Under the action of its own tension, the prestressed cable 55 contracts, driving the first anchoring piece 5922 toward the damping assembly, so that the first anchoring piece 5922 completely aligns with the tapered hole, anchoring the prestressed cable 55. Because the prestressed cable 55 retracts a short distance due to the first anchoring piece 5922 after each tensioning operation, the tensioning length is slightly longer than the designed length to ensure the tension of the prestressed cable 55 after tensioning.

[0065] It should be noted that a ball 5943 is also mounted on the end of the first sliding block 5938 away from the pull rod 5926. When the movable end of the telescopic member 5923 is extended, the ball 5943 contacts the wall of the groove of the slide rail 5937, thereby reducing resistance to movement of the first anchor 592. A retaining ring 595 is connected to the first anchor cylinder 5921 to block the first anchor plate 5922 and control the distance the first anchor plate 5922 can move toward the second anchor 593.

[0066] In addition, in order to delay the aging of the prestressed steel cable 55, stainless steel wire can be wrapped around the prestressed steel cable 55 and then covered with a PE sheath layer to reduce the impact of wind and sun on the prestressed steel cable 55. At the same time, PU is filled inside the steel wire of the prestressed steel cable 55 to eliminate water vapor channels and improve corrosion resistance.

[0067] In a second aspect, the present application discloses a construction method based on the above-mentioned weakly connected floor vibration reduction and self-resetting system, comprising the following steps:

[0068] S1. Construct a first damping device 4 between the elevator core tube 1 and the high-rise residential building 2;

[0069] S2, constructing a second damping device 5 between adjacent high-rise residential buildings 2;

[0070] S3, the first damping device 4 and the second damping device 5 are provided in multiple groups along the height direction and are installed on the top of the high-rise residential building 2 from the third to the sixth floor from the top down.

[0071] Example 2: The difference from Example 1 is that, referring to Figure 10 The second damping device 5 can be arranged between the elevator core tube 1 and the high-rise residential building 2. Two sets of second damping devices 5 can be set between the elevator core tube 1 and each high-rise residential building 2, and the second damping device 5 can be hidden in the side wall of the floor 3 or arranged under the floor 3 to improve the overall aesthetics.

[0072] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. A weakly connected floor vibration reduction and self-resetting system, wherein the direction of the line connecting the elevator core tube (1) and the high-rise residential building (2) is defined as the X direction, the direction perpendicular to the X direction on the horizontal plane is defined as the Y direction, and the direction of the line connecting adjacent high-rise residential buildings (2) is defined as the W direction, characterized in that: The invention comprises a first damping device (4) and a second damping device (5), wherein the first damping device (4) is arranged between an elevator core tube (1) and a high-rise residential building (2), and is used to apply damping to the high-rise residential building (2) and the elevator core tube (1) connected to the first damping device (4) along the Y direction, and the second damping device (5) is arranged between adjacent high-rise residential buildings (2), and is used to apply damping to the high-rise residential building (2) connected to the second damping device (5) along the W direction, and each high-rise residential building (2) is independently arranged and is individually connected to the elevator core tube (1); The first damping device (4) comprises a first connecting member (41), a second connecting member (42) and a viscous damper (43), wherein the first connecting member (41) is connected to the elevator core tube (1), the second connecting member (42) is connected to the high-rise residential building (2), and the viscous damper (43) is connected between the first connecting member (41) and the second connecting member (42) along the Y direction; The second damping device (5) comprises a prestressed steel cable (55) and anchoring mechanisms provided at both ends of the prestressed steel cable (55), wherein the anchoring mechanisms are installed on the high-rise residential building (2); The anchoring mechanism includes a damping assembly, which includes a fixed cylinder (51), a movable cylinder (52) and a baffle (54). The fixed cylinder (51) is installed on a high-rise residential building (2). The movable cylinder (52) slides in the fixed cylinder (51). A movable rod (53) is connected to the movable cylinder (52) along its own axial sliding direction. Both ends of the movable rod (53) extend outside the movable cylinder (52). One end of the movable rod (53) abuts against the baffle (54), and the other end passes through the fixed cylinder (51). The prestressed steel cable (55) passes through the movable rod (53) and is connected to the baffle (54). A first spring (56) abuts between the baffle (54) and the movable cylinder (52). A second spring (57) abuts between the movable cylinder (52) and the fixed cylinder (51). The first spring (56) and the second spring (57) are both sleeved on the movable rod (53). The anchoring mechanism further includes an intelligent tensioning assembly (59), which includes a tensioning jack (591), a first anchor (592) and a second anchor (593). The prestressed steel cable (55) passes through the baffle (54), the first anchor (592) and the second anchor (593). A pressure sensor (594) is provided between the first anchor (592) and the baffle (54). The pressure sensor (594) is electrically connected to the tensioning jack (591). The tensioning jack (591) is electrically connected to the second anchor (593). Both the first anchor (592) and the second anchor (593) have an anchoring state and a release state, and can switch between the anchoring state and the release state.

2. A weakly connected floor vibration reduction and self-resetting system according to claim 1, characterized in that: The first damping device (4) is arranged below the floor (3).

3. The weak-connected floor vibration reduction and self-resetting system according to claim 1 is characterized in that: A sealed cavity is provided in the movable cylinder (52), and a piston (58) is connected to the side wall of the movable rod (53). The piston (58) fits against the side wall of the sealed cavity to separate the sealed cavity into two cavities along the radial direction of the movable rod (53).

4. The weak-connected floor vibration reduction and self-resetting system according to claim 3 is characterized by: The first anchoring member (592) includes a first anchoring tube (5921) and two first anchoring sheets (5922). The inner hole of the first anchoring tube (5921) is a tapered hole. The two first anchoring sheets (5922) are arranged in the tapered hole and fit in the tapered hole. The large end of the tapered hole is arranged toward the second anchoring member (593). The prestressed steel cable (55) passes between the two first anchoring sheets (5922). The first anchoring member (592) further comprises a telescopic member (5923), a slider (5924) and a pull rod (5926); a sliding groove (5927) is provided on the side wall of the tapered hole; the slider (5924) slides in the sliding groove (5927); a clamping groove (5928) for the slider (5924) to be clamped in is provided on the side wall of the first anchoring piece (5922); an end of the slider (5924) away from the clamping groove (5928) is connected to the pull rod (5926); an end of the pull rod (5926) away from the slider (5924) is connected to the movable end of the telescopic member (5923); a third spring (5929) is sleeved on the pull rod (5926); and the third spring (5929) is provided between the slider (5924) and the bottom of the sliding groove (5927); When the slider (5924) is locked in the slot (5928), the first anchoring member (592) is in an anchored state.

5. The weakly connected floor vibration reduction and self-resetting system according to claim 4 is characterized in that: The second anchoring member (593) includes a second anchoring tube (5931) and an anchoring rod (5932). The second anchoring tube (5931) is connected to the movable end of the tensioning jack (591). The anchoring rod (5932) is rotatably connected to the second anchoring tube (5931). A plurality of anchoring rods are provided along the circumference of the second anchoring tube (5931). The side wall of the anchoring rod (5932) is provided with a pressure tooth (5933) for contacting the prestressed steel cable (55). The second anchoring member (593) further comprises a gear (5934) and a rack (5935) meshing with each other, the gear (5934) being coaxially rotatably connected to the second anchoring tube (5931), a shifting rod (5936) for contacting the anchoring rod (5932) being provided on the side wall of the gear (5934), the number of the shifting rods (5936) being equal to the number of the anchoring rods (5932), and corresponding one-to-one with the anchoring rods (5932), and when the gear (5934) is rotated, the shifting rod (5936) pushes the anchoring rod (5932) to rotate, so that the plurality of anchoring rods (5932) cooperate to clamp the prestressed steel cable (55); The movable end of the telescopic member (5923) is connected to a slide rail (5937), the pull rod (5926) is connected to a first sliding block (5938), and the rack (5935) is connected to a second sliding block (5939). The first sliding block (5938) and the second sliding block (5939) both slide in the rail groove of the slide rail (5937). The end of the first sliding block (5938) facing the pull rod (5926) is provided with anti-slip teeth (5941), and the end of the second sliding block (5939) facing the rack (5935) is provided with a ball (5942).

6. A construction method based on the weak-connected floor vibration reduction and self-resetting system according to any one of claims 1 to 5, characterized in that: The steps include: S1. constructing a first damping device (4) between the elevator core tube (1) and the high-rise residential building (2); S2, constructing a second damping device (5) between adjacent high-rise residential buildings (2); S3, the first damping device (4) and the second damping device (5) are provided in multiple groups along the height direction and are installed on the top of the high-rise residential building (2) from the third to the sixth floor from the top down.

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