Continuous plate double-zone prestressed self-balanced reinforcement system and method based on top anchor and bottom support

Abstract

The present application relates to the technical field of building structure reinforcement and reconstruction, and particularly relates to a continuous plate double-zone prestress self-balancing reinforcement system and method based on top anchoring and bottom bracing. The present application mainly comprises a reinforcement system composed of a reinforcement device, wherein the device comprises an anchoring mechanism arranged on a floor unit plate surface support, a mid-span dynamic mechanism arranged below a mid-span of the floor unit, and a tensioning rod connecting the anchoring mechanism and the mid-span dynamic mechanism; the mid-span dynamic mechanism is braced apart in the vertical direction under the action of an external force to brace and tighten the mid-span area of the floor unit upward, and to tighten the tensioning rod to apply a pulling force to the anchoring mechanism through the tensioning rod, so that the plate surface support area is subjected to a downward pressing action, thereby realizing the cooperative reinforcement of the mid-span and the plate surface support, effectively controlling the cracks and deflection caused by the increase of the bending moment, and simultaneously being capable of actively applying prestress without the need to set an external counterforce structure, thereby simplifying the construction process, improving the reinforcement efficiency and the structural durability.

Description

Technical Field

[0001] This invention relates to the field of building structure engineering reinforcement and renovation technology, and more specifically, to a continuous slab dual-zone prestressed self-balancing reinforcement system and method based on top anchor and bottom bracing. Background Technology

[0002] During the service life of reinforced concrete continuous slabs or beams, the internal forces often redistribute due to changes in functional use or the addition of new equipment loads. This redistribution typically leads to a significant increase in positive bending moment at mid-span and a simultaneous increase in negative bending moment at supports, easily causing structural performance problems such as mid-span cracking, increased deflection, and cracks at supports, severely impacting the structure's safety and functionality. To address this issue, existing reinforcement technologies mainly include carbon fiber bonding, steel plate bonding, and external prestressing reinforcement. However, these technologies have significant limitations in practical applications. First, reinforcement is often handled on a regional basis, with mid-span and supports typically reinforced separately, lacking synergy and failing to comprehensively improve the structural stress state. Second, most reinforcement methods are passive, with the applied reinforcement force easily lagging behind changes in structural load, making active control difficult. Third, external prestressing reinforcement systems usually rely on external reaction frames or supporting structures, increasing construction difficulty and site space requirements. Finally, traditional reinforcement construction involves numerous procedures, long cycles, and high overall costs, limiting its widespread application. Therefore, there is an urgent need for a new type of reinforcement system that can achieve coordinated reinforcement of the mid-span and support areas, actively apply prestress, and does not rely on external reaction structures, thereby simplifying the construction process, reducing costs, and effectively improving the overall performance and durability of the structure. Summary of the Invention

[0003] The main objective of this invention is to provide a continuous slab dual-zone prestressed self-balancing reinforcement system and method based on top anchors and bottom supports. This system aims to address at least the problems of lack of coordination in mid-span and support reinforcement in traditional processes, making it difficult to simultaneously control cracks and deflections caused by increased bending moments. It also addresses the issues of passive force application and complex construction in existing reinforcement methods, which hinder efficient and proactive improvement of structural performance. The system achieves coordinated reinforcement of the mid-span and slab supports, effectively controlling cracks and deflections caused by increased bending moments. Furthermore, the system can actively apply prestress without requiring external reaction structures, thus simplifying the construction process and improving reinforcement efficiency and structural durability.

[0004] To achieve the above objectives, the present invention provides a continuous slab dual-zone prestressed self-balancing reinforcement system and method based on top anchor and bottom bracing.

[0005] In a first aspect, the present invention provides a continuous slab dual-zone prestressed self-balancing reinforcement device based on top anchor and bottom bracing, the device comprising:

[0006] At least one pair of anchoring mechanisms are symmetrically installed on the symmetrical slab supports of the floor slab unit of the building; a mid-span dynamic mechanism is arranged below the center point of the floor slab unit, and the top of the mid-span dynamic mechanism is connected to the bottom surface of the center point of the floor slab unit; at least one pair of tension rods are provided, the first end of the pair of tension rods is connected to the pair of anchoring mechanisms, and the second end of the pair of tension rods is connected to the opposite ends of the bottom of the mid-span dynamic mechanism; wherein, the mid-span dynamic mechanism is stretched vertically by external force to tighten the center point of the floor slab unit upwards, the bottom of the mid-span dynamic mechanism is stretched to tighten the tension rods, the tension rods tighten the anchoring mechanisms, and the anchoring mechanisms are subjected to tension to press the slab supports of the floor slab unit downwards.

[0007] Furthermore, the anchoring mechanism consists of two pairs: one pair of anchoring mechanisms is arranged opposite each other in the transverse direction along the floor slab unit, and the other pair of anchoring mechanisms is arranged opposite each other in the longitudinal direction along the floor slab unit; wherein, the anchoring mechanism includes boundary support anchoring unit, intermediate support anchoring unit and load-bearing wall anchoring unit.

[0008] Furthermore, the floor slab unit includes an edge beam; a boundary support anchoring unit is installed on the edge beam; the boundary support anchoring unit is connected to the first end of the tension rod and presses the edge beam downward through the tension of the tension rod; wherein, the boundary support anchoring unit includes: an anchoring steel sleeve, which is set on the edge beam, the anchoring steel sleeve includes a first steel plate and a second steel plate, the first steel plate and the second steel plate are vertically connected; the first steel plate clamps the side of the edge beam in the vertical direction, and the second steel plate clamps the top surface of the edge beam in the horizontal direction; an anchoring lug, which is fixed to the top of the second steel plate, and the first end of the tension rod is connected to the anchoring lug to transfer the tension of the tension rod to the edge beam.

[0009] Furthermore, the floor slab unit includes a central beam; an intermediate support anchoring unit is installed on the central beam, the intermediate support anchoring unit is connected to the first ends of two tension rods and presses the central beam downward under the tension of the two tension rods; the intermediate support anchoring unit includes: a channel-shaped connecting plate, the channel-shaped connecting plate is fixed on the central beam; two connectors, the two connectors are symmetrically connected to the two ends of the channel-shaped connecting plate; the two connectors are connected to the first ends of the two tension rods to press the central beam downward under the tension of the two tension rods.

[0010] Furthermore, the floor unit includes a load-bearing wall; the load-bearing wall anchoring unit is installed on the load-bearing wall; wherein, the load-bearing wall anchoring unit includes: a back pressure steel plate, the inner side wall of which is tightly attached to the load-bearing wall; a wedge seat, the first side of which is tightly attached to the outer side wall of the back pressure steel plate; a wall anchor, the wall anchor being tightly attached to the second side of the wedge seat; and the first end of the tension rod passing through the load-bearing wall, the back pressure steel plate, and the wedge seat and being fixedly connected to the wall anchor.

[0011] Furthermore, the mid-span power mechanism includes: a pressure-bearing base, which is located below the center point of the floor slab unit, with the second ends of at least one pair of tension rods fixedly connected to the opposite ends of the pressure-bearing base; a lifting device, which is fixed vertically on the pressure-bearing base, with its lower end connected to the upper surface of the pressure-bearing base; the lifting device is opened vertically under external force; and a top support plate, which is fixed to the top of the lifting device and connected to the center point of the bottom surface of the floor slab unit; wherein, the lifting device is opened under external force, the top support plate pushes upward to tighten the center point of the floor slab unit, the lifting device presses downward to tighten the pressure-bearing base, and the pressure-bearing base tensions the tension rods.

[0012] Furthermore, the tension rod includes: a first tension rod and a second tension rod; wherein, the first end of the first tension rod is connected to the anchoring mechanism, the first end of the second tension rod is connected to the mid-span power mechanism, and the second end of the first tension rod is connected to the second end of the second tension rod; an adjustable connector; the second end of the first tension rod and the second end of the second tension rod are connected by the adjustable connector; the adjustable connector is used to adjust the overall length and preload of the tension rod.

[0013] In a second aspect, the present invention provides a method for dual-zone prestressed self-balancing reinforcement of continuous slabs based on top anchor and bottom bracing. This method is applied to the apparatus of the first aspect, and the method includes:

[0014] The top of the mid-span dynamic mechanism is connected to the bottom surface of the center point of the floor slab unit. At least one pair of anchoring mechanisms are symmetrically installed on the symmetrical slab supports of the floor slab unit. The first end of the tension rod is connected to the anchoring mechanism, and the second end of the tension rod is connected to the corresponding end of the bottom of the mid-span dynamic mechanism to complete the corresponding connection between the mid-span dynamic mechanism and at least one pair of anchoring units. An external force is applied to the mid-span dynamic mechanism to drive it to expand vertically to tighten the center point of the floor slab unit upwards. The bottom of the mid-span dynamic mechanism is tensioned to tighten the tension rod, which in turn tightens the anchoring mechanism. The anchoring mechanism is subjected to tension to press the slab support of the floor slab unit downwards to complete the self-balancing reinforcement of the floor slab unit.

[0015] Thirdly, the present invention provides a continuous slab dual-zone prestressed self-balancing reinforcement system based on top anchor and bottom bracing, the system comprising:

[0016] Multiple reinforcement devices, the reinforcement device being a first aspect of a continuous slab dual-zone prestressed self-balancing reinforcement device based on top anchor and bottom bracing; wherein, the multiple reinforcement devices are arranged in an array, corresponding one-to-one at multiple floor slab units of the building, and the adjacent slab supports of two adjacent reinforcement devices share a common intermediate support anchoring unit for connection.

[0017] Fourthly, the present invention provides a method for dual-zone prestressed self-balancing reinforcement of continuous slabs based on top anchors and bottom supports. This method applies the system of the third aspect and includes:

[0018] The tops of multiple mid-span power mechanisms are connected to the bottom surfaces of the center points of multiple floor slab units;

[0019] Determine the reinforcement boundaries of multiple floor slab units, and install multiple anchoring mechanisms on the slab supports of multiple floor slab units;

[0020] The first end of the tension rod is connected to the anchoring mechanism, and the second end of the tension rod is connected to the bottom end of the mid-span power mechanism to complete the corresponding connection between multiple mid-span power mechanisms and multiple anchoring units.

[0021] External forces are applied to multiple mid-span dynamic mechanisms, causing them to expand vertically to support the center points of multiple floor slab units. Multiple pairs of tension rods are tightened at the bottom of the multiple mid-span dynamic mechanisms, which in turn tighten multiple anchoring mechanisms. The anchoring mechanisms are subjected to tension to press the slab supports of multiple floor slab units downward, thereby completing the self-balancing reinforcement of multiple floor slab units.

[0022] This application relates to the field of building structure reinforcement and renovation technology, and in particular to a continuous slab dual-zone prestressed self-balancing reinforcement system and method based on top anchor and bottom bracing. The invention mainly includes a reinforcement system composed of a reinforcement device, wherein the device includes anchoring mechanisms symmetrically arranged on the floor slab unit supports, a mid-span dynamic mechanism located below the mid-span of the floor slab unit, and a tension rod connecting the anchoring mechanism and the mid-span dynamic mechanism. Under external force, the mid-span dynamic mechanism expands vertically to lift the mid-span area of ​​the floor slab unit upwards and tensions the tension rod to apply tension to the anchoring mechanism, causing a downward pressing effect on the slab support area. This achieves coordinated reinforcement of the mid-span and slab support areas, effectively controlling cracks and deflections caused by increased bending moment. Simultaneously, it can actively apply prestress without requiring external reaction structures, thus simplifying the construction process and improving reinforcement efficiency and structural durability. Attached Figure Description

[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0024] Figure 1 A schematic diagram of the first type of connection for the continuous slab dual-zone prestressed self-balancing reinforcement system based on top anchor and bottom bracing provided in this application;

[0025] Figure 2 A schematic diagram of the boundary support anchoring unit of the continuous slab dual-zone prestressed self-balancing reinforcement system based on top anchor and bottom bracing provided in this application;

[0026] Figure 3A schematic diagram of the intermediate support anchoring unit of the continuous slab dual-zone prestressed self-balancing reinforcement system based on top anchor and bottom bracing provided in this application;

[0027] Figure 4 A structural schematic diagram of the load-bearing wall anchoring unit of the continuous slab dual-zone prestressed self-balancing reinforcement system based on top anchor and bottom bracing provided in this application;

[0028] Figure 5 A schematic diagram of the mid-span dynamic mechanism of the continuous slab dual-zone prestressed self-balancing reinforcement system based on top anchor and bottom bracing provided in this application;

[0029] Figure 6 A schematic diagram of the first tie rod of the continuous slab dual-zone prestressed self-balancing reinforcement system based on top anchor and bottom bracing provided in this application;

[0030] Figure 7 A schematic diagram of the second tie rod of the continuous slab dual-zone prestressed self-balancing reinforcement system based on top anchor and bottom bracing provided in this application;

[0031] Figure 8 A schematic diagram of the third tie rod of the continuous slab dual-zone prestressed self-balancing reinforcement system based on top anchor and bottom bracing provided in this application;

[0032] Figure 9 A second connection diagram for the continuous slab dual-zone prestressed self-balancing reinforcement system based on top anchor and bottom bracing provided in this application;

[0033] Figure 10 A third connection diagram for the continuous slab dual-zone prestressed self-balancing reinforcement system based on top anchor and bottom bracing provided in this application;

[0034] Figure 11 A fourth connection diagram for the continuous slab dual-zone prestressed self-balancing reinforcement system based on top anchor and bottom bracing provided in this application;

[0035] Figure 12 A continuous slab to be reinforced is provided in this application;

[0036] Figure 13 The dual-zone prestressed self-balancing reinforcement method for continuous slabs based on top anchors and bottom bracing provided in this application is applied to... Figure 13 A schematic diagram of the first step connection of the structure to be reinforced;

[0037] Figure 14 The dual-zone prestressed self-balancing reinforcement method for continuous slabs based on top anchors and bottom bracing provided in this application is applied to... Figure 13 The second step connection diagram of the structure to be reinforced.

[0038] The above figures include the following reference numerals:

[0039] 10. Boundary support anchoring unit; 20. Intermediate support anchoring unit; 30. Load-bearing wall anchoring unit; 40. Mid-span power mechanism; 50. Tensioner rod; 60. Floor slab unit; 11. Anchor steel sleeve; 12. Anchor lifting lug; 21. Channel-shaped connecting plate; 22. Connector; 31. Back pressure steel plate; 32. Wedge seat; 33. Wall anchor; 41. Bearing base; 42. Lifting device; 43. Top support plate; 51. First tie rod; 52. Second tie rod; 53. Adjustable connector.

[0040] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0041] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0042] The first embodiment of this application provides a continuous slab dual-zone prestressed self-balancing reinforcement device based on top anchor and bottom bracing, such as Figure 1 As shown, the device includes: at least one pair of anchoring mechanisms, which are symmetrically installed on the symmetrical slab supports of the floor slab unit 60 of the building; a mid-span dynamic mechanism 40, which is arranged below the center point of the floor slab unit 60, with the top of the mid-span dynamic mechanism 40 connected to the bottom surface of the center point of the floor slab unit 60; and at least one pair of tension rods 50, with the first end of the tension rods 50 correspondingly connected to the pair of anchoring mechanisms, and the second end of the tension rods 50 correspondingly connected to the two opposite ends of the bottom of the mid-span dynamic mechanism 40; wherein, the mid-span dynamic mechanism 40 is stretched vertically by an external force to tighten the center point of the floor slab unit 60 upwards, the bottom of the mid-span dynamic mechanism 40 tensions the tension rods 50, the tension rods 50 tighten the anchoring mechanisms, and the anchoring mechanisms are subjected to tension to press the slab supports of the floor slab unit 60 downwards.

[0043] Specifically, the continuous slab double-zone prestressed self-balancing reinforcement device based on top anchor and bottom bracing achieves a force mode of upward support at the mid-span (center of floor slab unit 60) and downward compression at the slab surface supports (sides of floor slab unit 60) through the organic coordination of the mid-span dynamic mechanism 40, tension rod 50, and anchoring mechanism. This simultaneously solves the problems of insufficient positive bending moment at the center of the slab span and insufficient negative bending moment at the supports of floor slab unit 60. Specifically, the mid-span dynamic mechanism 40 is vertically expanded under the action of external force, directly acting upward on floor slab unit 60. At the center point, the force simultaneously influences the bottom of the mid-span dynamic mechanism 40 downwards. The bottom of the mid-span dynamic mechanism 40 drives the tension rod 50 to tighten the anchoring mechanism, causing the side of the floor slab to bear the vertical downward tensile force component, thereby simultaneously adjusting the force distribution in the mid-span and support areas. This structural coordination not only effectively controls the cracks and deflection problems caused by the increase in bending moment, but also achieves an active and controllable reinforcement effect. It overcomes the defects of traditional methods, such as lack of coordination between mid-span and support reinforcement, complex construction, and passive force application, and significantly improves the overall structural performance and construction efficiency.

[0044] Furthermore, such as Figure 1 As shown, there are two pairs of anchoring mechanisms. One pair of anchoring mechanisms is arranged opposite each other in the transverse direction along the floor slab unit 60, and the other pair of anchoring mechanisms is arranged opposite each other in the longitudinal direction along the floor slab unit 60. The anchoring mechanism includes a boundary support anchoring unit 10, an intermediate support anchoring unit 20, and a load-bearing wall anchoring unit 30.

[0045] In practical implementation, depending on the actual requirements of different working conditions, the reinforcement of a single floor slab unit 60 can be achieved using either a reinforcement scheme with one pair of anchoring units and a corresponding pair of tension rods 50, or a reinforcement scheme with two pairs of anchoring units and two corresponding pairs of tension rods 50. By flexibly selecting one or two pairs of anchoring mechanisms and corresponding tension rods 50, the reinforcement of the floor slab unit 60 can adapt to the actual needs of different working conditions, allowing for flexible adjustments to the construction plan. This design facilitates rapid and efficient construction while maintaining coordinated control of the stress in the mid-span and support areas, effectively suppressing cracking and deflection increases, and overcoming the shortcomings of traditional methods such as complex construction, passive stress distribution, and difficulty in considering different floor slab working conditions. Based on the above, it can be inferred that for multiple floor slab units 60, different reinforcement schemes in different directions can also be adopted according to specific working conditions.

[0046] In addition, by subdividing the anchoring mechanism into boundary support anchoring unit 10, intermediate support anchoring unit 20 and load-bearing wall anchoring unit 30, precise reinforcement can be carried out according to the characteristics of different areas of the floor slab, realizing targeted stress control of the slab support and load-bearing wall areas. This zoning arrangement not only effectively improves the overall stress state of the floor slab and suppresses the occurrence of cracks and deflection, but also enhances the targeting and controllability of the reinforcement scheme, thereby improving the overall structural performance.

[0047] Furthermore, such as Figure 2 As shown, the floor slab unit 60 includes an edge beam; a boundary support anchoring unit 10 is installed on the edge beam; the boundary support anchoring unit 10 is connected to the first end of the tension rod 50 and presses the edge beam downward through the tension of the tension rod 50; wherein, the boundary support anchoring unit 10 includes: an anchoring steel sleeve 11, which is set on the edge beam, and includes a first steel plate and a second steel plate, which are vertically connected; the first steel plate clamps the side of the edge beam in the vertical direction, and the second steel plate clamps the top surface of the edge beam in the horizontal direction; an anchoring lug 12, which is fixed to the top of the second steel plate, and the first end of the tension rod 50 is connected to the anchoring lug 12 to transmit the tension of the tension rod 50 to the edge beam.

[0048] Specifically, the edge beam is the slab support on the reinforced boundary; the edge beam is further subdivided according to its position on the actual building continuous slab, and the slab support on the boundary of the actual building continuous slab is called the first edge beam, and the slab support inside the boundary of the actual building continuous slab is called the second edge beam.

[0049] In specific implementation, when installing the anchor steel sleeve 11 on the first side beam, the first steel plate and the second steel plate are placed in the middle of the first side beam, with the first steel plate tightly attached to the outer side of the first side beam and the second steel plate tightly attached to the top surface of the first side beam; then, the second steel plate is fixed to the top surface of the first side beam using surface adhesive, and the first steel plate is fixed to the outer side of the first side beam using chemical anchors.

[0050] When installing the anchor steel sleeve 11 on the second side beam, the main reinforcement in the middle position of the second side beam is first located using a rebar detector. A vertical narrow groove is opened to avoid the main reinforcement. The first steel plate is inserted into the vertical narrow groove to achieve minimally invasive implantation of the anchor steel sleeve 11. In addition, the second steel plate is fixed to the top surface of the second side beam using surface adhesive. The installation of the anchor steel sleeve 11 on the side beam is completed through the above two methods, thereby completing the installation of the boundary support anchoring unit 10 on the side beam.

[0051] Secondly, the anchoring lugs 12 on the side beam have two symmetrical lugs, which are used to connect with the tension rod 50 by bolts. After this connection, the tension rod 50 can rotate around the line connecting the two lugs. This connection method increases the movement space of the tension rod 50 and ensures the organic operation of the reinforcement system.

[0052] Specifically, when the first end of the tension rod 50 is connected to the anchor lug 12 to transfer the tension of the tension rod 50 to the side beam, this intermediate process can be decomposed into the horizontal tension of the tension rod 50 being transferred to the side beam through the anchor steel sleeve 11, cleverly utilizing the geometric constraints of the side beam section to resist the unilateral horizontal tension and achieve reliable anchoring; the vertical tension of the tension rod 50 is applied to the side beam to compress the side beam, thereby reducing the negative bending moment of the side beam.

[0053] Furthermore, such as Figure 3 As shown, the floor slab unit 60 includes a central beam; an intermediate support anchoring unit 20 is installed on the central beam, and the intermediate support anchoring unit 20 is connected to the first ends of two tension rods 50 and presses the central beam downward under the tension of the two tension rods 50; the intermediate support anchoring unit 20 includes: a channel-shaped connecting plate 21, which is fixed on the central beam; two connectors 22, which are symmetrically connected to the two ends of the channel-shaped connecting plate 21; the two connectors 22 are connected to the first ends of the two tension rods 50 to press the central beam downward under the tension of the two tension rods 50.

[0054] Specifically, the central beam is a slab support located within the reinforced boundary.

[0055] In specific implementation, the channel-shaped connecting plate 21 can be fixed to the middle beam by bolt connection, welding, or bonding. Preferably, the bottom surface of the channel-shaped connecting plate 21 is firmly bonded to the top surface of the middle beam by surface adhesive, achieving reliable fixation and simple construction. The connecting piece 22 is connected to the channel-shaped connecting plate 21 by axle pin or pin, which allows the connecting piece 22 to rotate to flexibly connect the tension rod 50 under different working conditions. Among them, the connection method between the two tension rods 50 from different floor slab units 60 and the two connecting pieces 22 is preferably welding.

[0056] Specifically, the two connectors 22 are respectively connected to the first ends of the two tension rods 50 to press the middle beam downward under the tension of the tension rods 50. This intermediate process can be decomposed into a pair of opposing horizontal tensions of the two tension rods 50 perfectly canceling each other in the channel-shaped connecting plate 21, and the vertical tensions of the two tension rods 50 superimposed on the middle beam to press the middle beam, reducing the negative bending moment of the middle beam, greatly enhancing the local shear bearing capacity of the middle beam and enhancing the punching shear resistance.

[0057] Furthermore, such as Figure 4 As shown, the floor slab unit 60 includes a load-bearing wall; the load-bearing wall anchoring unit 30 is installed on the load-bearing wall; wherein, the load-bearing wall anchoring unit 30 includes: a back pressure steel plate 31, the inner side wall of the back pressure steel plate 31 is tightly attached to the load-bearing wall; a wedge seat 32, the first surface of the wedge seat 32 is tightly attached to the outer side wall of the back pressure steel plate 31; a wall anchor 33, the wall anchor 33 is tightly attached to the second surface of the wedge seat 32; the first end of the tension rod 50 passes through the load-bearing wall, the back pressure steel plate 31 and the wedge seat 32 and is fixedly connected to the wall anchor 33.

[0058] In specific implementation, the size of the back pressure steel plate 31 can be selected according to the specific load-bearing wall conditions. It is preferable to use a large-area distributed back pressure steel plate 31. The use of the back pressure steel plate 31 prevents the wall from being crushed locally by expanding the pressure area. In specific construction, through holes are opened in the load-bearing wall. It is preferable to insert rigid force transmission sleeves into the through holes to protect the tension rod 50 segments extending into the load-bearing wall.

[0059] Specifically, the wedge seat 32 is a right trapezoid with its first and second faces facing each other. The second face is the only inclined surface in the right trapezoid. A wall connection hole is provided inside the wedge seat 32. The first end of the tension rod 50 first passes through the through hole in the load-bearing wall and then through the wall connection hole in the wedge seat 32 to be screwed to the wall anchor 33. The axis of the wall anchor 33 is consistent with the axis of the tension rod 50. The angle of the wall connection hole is determined according to the specific working conditions so that the first end of the tension rod 50 is perpendicular to the second face (bearing surface) of the wedge seat 32, eliminating the eccentric bending moment at the wall anchor 33, so as to ensure that the tension rod 50 is purely under tension.

[0060] Specifically, the first end of the tension rod 50 is provided with an external thread for connection with the wall anchor 33. The tension of the tension rod 50 at the load-bearing wall is transmitted to the load-bearing wall through the back pressure of the load-bearing wall anchoring unit 30, so as to achieve reliable anchoring.

[0061] Furthermore, such as Figure 1 and Figure 5 As shown, the mid-span power mechanism 40 includes: a pressure-bearing base 41, which is located below the center point of the floor slab unit 60, and the second ends of at least one pair of tension rods 50 are fixedly connected to the opposite ends of the pressure-bearing base 41; a lifting device 42, which is fixed vertically on the pressure-bearing base 41, and the lower end of the lifting device 42 is connected to the upper surface of the pressure-bearing base 41; the lifting device 42 is opened vertically under the action of external force; and a top support plate 43, which is fixed on the top of the lifting device 42 and connected to the center point of the bottom surface of the floor slab unit 60; wherein, the lifting device 42 is opened under the action of external force, the top support plate 43 is pushed upward to tighten the center point of the floor slab unit 60, the lifting device 42 is pressed downward to tighten the pressure-bearing base 41, and the pressure-bearing base 41 tensions the tension rods 50.

[0062] Specifically, the top support plate 43 is preferably a rectangular flat rigid member with multiple mounting holes for connecting with the floor slab unit to be reinforced, so as to achieve reliable fixation of the load; two first connecting plates are symmetrically fixed at its bottom, and each first connecting plate has a first groove extending in the horizontal direction.

[0063] Specifically, the pressure-bearing base 41 is preferably a rectangular flat rigid member with two pairs of bottom lugs on its top in both longitudinal and transverse directions. One pair of bottom lugs (two in total) is arranged transversely at both ends of the pressure-bearing base 41, and the other pair of bottom lugs (two in total) is arranged longitudinally at both ends of the pressure-bearing base 41. Two ear holes are symmetrically opened on the bottom lugs for connecting with the tension rod bolts. After this connection, the tension rod can rotate around the line connecting the two ear holes. This connection method increases the movement space of the tension rod and ensures the organic operation of the reinforcement system. In addition, two second connecting plates are symmetrically fixed on its top, and each second connecting plate has a second sliding groove extending in the horizontal direction.

[0064] The lifting device 42 is a double-set scissor lift mechanism, with two symmetrically arranged scissor assemblies. Each scissor assembly is formed by the cross-hinged connection of the upper and lower scissor arms. Each scissor assembly itself achieves the cross-connection of the upper and lower scissor arms through the first hinge shaft and the second hinge shaft. The first hinge shafts of the two scissor assemblies are rigidly connected through the first central connecting beam, and the second hinge shafts of the two scissor assemblies are rigidly connected through the second central connecting beam. The first central connecting beam and the second central connecting beam are respectively provided with screw holes, and a lead screw is horizontally inserted through the two screw holes. The lead screw is the only power source of the device.

[0065] The top ends of the upper scissor arms of the two scissor arms of the lifting device 42 are respectively hinged to a first connecting plate at the bottom of the top support plate 43 by pins, and one of the pins can slide along the first groove on the first connecting plate; the bottom ends of the lower scissor arms of the two scissor arms of the lifting device 42 are respectively hinged to a second connecting plate at the top of the pressure base 41 by pins, and one of the pins can slide along the second groove on the second connecting plate.

[0066] In practice, rotating the lead screw, through its threaded engagement with the screw holes on the first and second central connecting beams, causes the two connecting beams to move synchronously closer along the lead screw axis, resulting in a synchronous change in the cross angle between the upper and lower scissor arms of each scissor fork assembly. The hinge pins at the upper and lower ends of the scissor fork assembly slide horizontally along the first and second slide grooves, respectively, converting the horizontal linear motion of the lead screw into the vertical lifting motion of the lifting device 42. This drives the top support plate 43 to achieve smooth lifting and lowering. The self-locking characteristic of the lead screw ensures that the top support plate 43 can be stably stopped at any height. This achieves force amplification and vertical bidirectional synchronous expansion, while also possessing precise, stepless active adjustment capabilities. During operation, the expansion height and speed can be flexibly controlled according to different working conditions, improving the accuracy and reliability of reinforcement or adjustment construction. Furthermore, the lead screw, as the sole power source, simplifies the power transmission structure, reducing mechanical complexity and the risk of failure.

[0067] In practice, the screw rotation drives the jacking device 42 to expand vertically, and the top support plate 43 pushes the center point of the floor slab unit 60 upward, increasing the concentrated jacking force applied to the center point of the floor slab unit 60 so that the force can directly offset the new external load, producing an anti-arching effect and actively reducing the positive bending moment at the mid-span. At the same time, the expansion of the jacking device 42 also presses the bearing base 41 downward, increasing the vertical downward pressure applied to the bearing base 41, so that the bearing base 41 tightens the tension rod 50 connected to the bearing base 41, and the tension rod 50 tightens the anchoring mechanism located on the slab support of the floor slab unit 60, thereby pressing the slab support downward.

[0068] Furthermore, such as Figure 6-8As shown, the tension rod 50 includes: a first tie rod 51 and a second tie rod 52; wherein, the first end of the first tie rod 51 is connected to the anchoring mechanism, the first end of the second tie rod 52 is connected to the mid-span power mechanism 40, and the second end of the first tie rod 51 is connected to the second end of the second tie rod 52; an adjustable connector 53; the second end of the first tie rod 51 and the second end of the second tie rod 52 are connected by the adjustable connector 53; the adjustable connector 53 is used to adjust the overall length and preload of the tension rod 50.

[0069] In practice, it is preferable to use steel tie rods for tension rod 50.

[0070] Specifically, the adjustable connector 53 is preferably a turnbuckle, which includes a central adjusting sleeve and reverse threaded connecting parts at both ends of the adjusting sleeve. The second ends of the first tie rod 51 and the second tie rod 52 are provided with external threads and respectively engage with the corresponding threaded connecting parts. By rotating the adjusting sleeve, the relative axial distance between the first tie rod 51 and the second tie rod 52 can be changed, thereby realizing the continuous adjustment of the total length of the steel tie rod and the application of axial preload, so as to facilitate structural installation error compensation, tension adjustment and subsequent maintenance and adjustment.

[0071] Specifically, in order to achieve the connection between the anchoring mechanism and the mid-span power mechanism 40, the tension rod 50 is designed in three forms according to the characteristics of the anchoring mechanism. These three forms include the first tension rod, the second tension rod, and the third tension rod. The difference between the three is that the structural design of the first end (the first end of the first tension rod 51) and the second end (the first end of the second tension rod 52) of the tension rod 50 is different.

[0072] Optionally, the first tie rod is used to connect the intermediate support anchoring unit 20 and the mid-span power mechanism 40. Specifically, the first end of the first tie rod (the first end of the first tie rod 51) is a smooth cylindrical section for welding with the connector 22 to connect with the intermediate support anchoring unit 20. The second end of the first tie rod (the first end of the second tie rod 52) is provided with a connecting ring for bolting with the bottom lug plate of the pressure base 41 in the mid-span power mechanism 40 to connect with the mid-span power mechanism 40.

[0073] Optionally, the second tie rod is used to connect the boundary support anchoring unit 10 and the mid-span power mechanism 40. Specifically, the first end of the second tie rod (the first end of the first tie rod 51) is provided with a connecting ring for bolting with the anchoring lug 12 in the boundary support anchoring unit 10 to connect with the boundary support anchoring unit 10. The second end of the second tie rod (the first end of the second tie rod 52) is provided with a connecting ring for bolting with the bottom lug plate of the pressure base 41 in the mid-span power mechanism 40 to connect with the mid-span power mechanism 40.

[0074] Optionally, the third tie rod is used to connect the load-bearing wall anchoring unit 30 and the mid-span power mechanism 40. Specifically, the first end of the third tie rod (the first end of the first tie rod 51) is provided with an external thread for bolting with the wall anchor 33 in the load-bearing wall anchoring unit 30 to connect with the load-bearing wall anchoring unit 30. The second end of the third tie rod (the first end of the second tie rod 52) is provided with a connecting ring for bolting with the bottom ear plate of the pressure base 41 in the mid-span power mechanism 40 to connect with the mid-span power mechanism 40.

[0075] Through the preferred structure of the tension rod 50, the tension rod 50 can connect the anchoring mechanism and the mid-span power mechanism 40, and convert the driving force of the mid-span power mechanism 40 into the tension force of the tension rod 50. Then, the tension force of the tension rod 50 is used to press the anchoring mechanism and then press the slab support of the floor unit 60 downward.

[0076] In summary, the coordinated operation of the anchoring mechanism, tension rod 50, and mid-span power mechanism 40 can achieve a self-balancing mechanical locking state through a single mechanical power source, simultaneously solving the problems of insufficient positive bending moment at mid-span and insufficient negative bending moment at supports in the floor slab unit 60. This achieves a qualitative change from passive reinforcement materials to actively reconstructing the stress model. Furthermore, the three components themselves form a mechanical loop, requiring no external reaction frame and having no negative external impact on the original structure. This makes it particularly suitable for reinforcement scenarios with high load and high reliability requirements.

[0077] The second embodiment of this application provides a method for dual-zone prestressed self-balancing reinforcement of continuous slabs based on top anchors and bottom bracing. This method is applied to the apparatus of the first embodiment and includes:

[0078] The top of the mid-span dynamic mechanism 40 is connected to the bottom surface of the center point of the floor slab unit 60. At least one pair of anchoring mechanisms are symmetrically installed on the symmetrical plate supports of the floor slab unit 60. The first end of the tension rod 50 is connected to the anchoring mechanism, and the second end of the tension rod 50 is connected to the corresponding end of the bottom of the mid-span dynamic mechanism 40 to complete the corresponding connection between the mid-span dynamic mechanism 40 and at least one pair of anchoring units. An external force is applied to the mid-span dynamic mechanism 40 to drive it to expand vertically to tighten the center point of the floor slab unit 60. The bottom of the mid-span dynamic mechanism 40 is tensioned to tighten the tension rod 50, which in turn tightens the anchoring mechanism. The anchoring mechanism is subjected to tension to press the plate support of the floor slab unit 60 downward to complete the self-balancing reinforcement of the floor slab unit 60.

[0079] It should be noted that the above method is a reinforcement method for a single floor slab unit 60. The following is a detailed explanation of this method.

[0080] In practice, depending on the specific working conditions of a single floor slab unit 60, either a unidirectional (longitudinal or transverse) reinforcement method or a bidirectional (longitudinal and transverse) reinforcement method may be selected.

[0081] Firstly, the unidirectional reinforcement method:

[0082] The mid-span power unit is positioned below the center point of the floor slab unit 60, and the top of the mid-span power mechanism 40 (top support plate 43) is connected to the bottom surface of the center point of the floor slab unit 60.

[0083] The reinforcement direction of a single floor slab unit 60 is determined according to the specific working conditions. This reinforcement direction is designated as the first design reinforcement direction. The type of the two side slab supports on the first design reinforcement direction of the floor slab unit 60 is determined. The types include the first side beam, the second side beam, and the load-bearing wall. According to the determined type of the slab support, a pair of corresponding anchoring mechanisms are arranged according to the aforementioned text.

[0084] The first end of a pair of tension rods 50 is passed through the floor unit 60 or the load-bearing wall and connected to a pair of anchoring mechanisms. The second end of a pair of tension rods 50 is locked to the two ends of the bottom of the mid-span power mechanism 40 in the first design reinforcement direction.

[0085] Construction workers rotate the lead screw in the lifting device 42 of the mid-span power mechanism 40 at the bottom of the slab. The lifting device 42 then expands upward to make the top support plate 43 support the center point of the floor slab unit 60. At the same time, the lifting device 42 presses down on the bearing base 41. The bearing base 41 pulls a pair of tension rods 50 to tighten a pair of anchoring mechanisms. A huge axial tensile force is generated inside the tension rods 50. The pair of anchoring mechanisms are subjected to corresponding tensile forces. The horizontal component of the tensile force is transmitted to the slab support through the anchoring mechanism. The vertical component of the tensile force presses down on the slab supports on both sides in the first design reinforcement direction, thereby completing the support of the center of the floor slab unit 60 and the pressing of the slab supports on both sides in the first preset reinforcement direction, realizing the self-balancing reinforcement of a single floor slab unit 60.

[0086] Secondly, the two-way reinforcement method:

[0087] The mid-span power unit is positioned below the center point of the floor slab unit 60, and the top of the mid-span power mechanism 40 (top support plate 43) is connected to the bottom surface of the center point of the floor slab unit 60.

[0088] Reinforcement is carried out in both the longitudinal and transverse directions of floor slab unit 60. The reinforcement directions are defined as the second design reinforcement direction and the third design reinforcement direction. The types of the four slab supports of floor slab unit 60 are determined respectively. The types include the first side beam, the second side beam and the load-bearing wall. According to the determined types of slab supports, two pairs of anchoring mechanisms are set up in accordance with the aforementioned text.

[0089] Two pairs (four in total, two longitudinally and two axially) of tension rods 50 are used to connect the mid-span power mechanism 40 to the two pairs of anchoring mechanisms;

[0090] Construction workers rotate the lead screw in the lifting device 42 of the mid-span power mechanism 40 at the bottom of the slab. The lifting device 42 then expands upward to make the top support plate 43 support the center point of the floor slab unit 60. At the same time, the lifting device 42 presses down on the bearing base 41. The bearing base 41 pulls the two pairs of tension rods 50 to tighten the two pairs of anchoring mechanisms. A huge axial tensile force is generated inside the two pairs of tension rods 50. The two pairs of anchoring mechanisms are subjected to corresponding tensile forces. The horizontal component of the tensile force is transmitted to the slab support through the anchoring mechanism. The vertical component of the tensile force presses down on the slab support, thereby completing the support of the center of the floor slab unit 60 and the compression of the four slab supports of the floor slab unit 60, realizing the self-balancing reinforcement of a single floor slab unit 60.

[0091] like Figure 1 , Figure 9-11 As shown, a third embodiment of this application provides a continuous slab dual-zone prestressed self-balancing reinforcement system based on top anchor and bottom bracing, the system comprising:

[0092] Multiple reinforcement devices are provided, and the reinforcement devices are a type of continuous slab double-zone prestressed self-balancing reinforcement device based on top anchor and bottom support, as described in the first aspect. The multiple reinforcement devices are arranged in an array and correspond one-to-one at multiple floor slab units 60 of the building. The adjacent slab supports of two adjacent reinforcement devices are connected by a common intermediate support anchoring unit 20.

[0093] Specifically, the continuous slab dual-zone prestressed self-balancing reinforcement system based on top anchor and bottom bracing arranges multiple continuous slab dual-zone prestressed self-balancing reinforcement devices based on top anchor and bottom bracing in an array, and allows adjacent devices to share the intermediate span support anchoring unit, thereby achieving the overall synergistic effect of the floor slab unit 60 reinforcement. This arrangement not only improves the continuity and uniformity of structural reinforcement, ensures synchronous control of stress in the mid-span and support areas, and suppresses cracks and deflection, but also reduces the duplication of anchoring units, lowers construction costs and complexity, and improves overall reinforcement efficiency and structural performance.

[0094] The fourth embodiment of this application provides a method for dual-zone prestressed self-balancing reinforcement of continuous slabs based on top anchor and bottom bracing. This method applies the system of the third embodiment and includes:

[0095] The tops of multiple mid-span dynamic mechanisms 40 are connected to the bottom surfaces of the center points of multiple floor slab units 60; the reinforcement boundaries of multiple floor slab units 60 are determined, and multiple anchoring mechanisms are arranged on the slab supports of multiple floor slab units 60; the first end of the tension rod 50 is connected to the anchoring mechanism, and the second end of the tension rod 50 is connected to the corresponding end of the bottom of the mid-span dynamic mechanism 40 to complete the corresponding connection between the multiple mid-span dynamic mechanisms 40 and the multiple anchoring units; an external force is applied to the multiple mid-span dynamic mechanisms 40 to drive them to expand vertically to tighten the center points of multiple floor slab units 60 upwards; the bottoms of the multiple mid-span dynamic mechanisms 40 tighten multiple pairs of tension rods 50; the multiple pairs of tension rods 50 tighten multiple anchoring mechanisms; the multiple anchoring mechanisms are subjected to tension to press the slab supports of multiple floor slab units 60 downwards to complete the self-balancing reinforcement of multiple floor slab units 60.

[0096] In practice, depending on the specific working conditions of multiple floor slab units 60 (continuous slabs) of the building, either a unidirectional (longitudinal or transverse) reinforcement method or a bidirectional (longitudinal and transverse) reinforcement method can be selected. If the length of multiple floor slab units 60 in the longitudinal or transverse direction is much greater than the length in the other direction, then a unidirectional reinforcement method can be selected for reinforcement. If the lengths of multiple floor slab units 60 in the longitudinal and transverse directions are similar, then a bidirectional reinforcement method can be selected.

[0097] Firstly, unidirectional reinforcement methods (such as...) Figure 10-11 (as shown)

[0098] The tops of multiple mid-span power mechanisms 40 are connected to the bottom surfaces of the center points of multiple floor slab units 60;

[0099] The reinforcement direction is determined according to the specific working conditions, and this reinforcement direction is defined as the first continuous reinforcement direction. The reinforcement boundaries of multiple floor slab units 60 are determined along the first continuous reinforcement direction.

[0100] At the reinforced boundaries of multiple floor slab units 60, corresponding boundary support anchoring units 10 or load-bearing wall anchoring units 30 are arranged; wherein, if the reinforced boundary is an edge beam, the boundary support anchoring unit 10 is installed on the edge beam, and the edge beam is further subdivided into a first edge beam or a second edge beam, and the installation of the boundary support anchoring unit 10 is completed according to the subdivision result and the aforementioned text; if the reinforced boundary is a load-bearing wall, the load-bearing wall anchoring unit 30 is installed on the load-bearing wall;

[0101] Along the first continuous reinforcement direction, multiple intermediate span support anchoring units are arranged within the reinforcement boundaries of multiple floor slab units 60;

[0102] Multiple pairs of tension rods 50 are used to connect the anchoring mechanism and the mid-span power mechanism 40;

[0103] External force is applied to multiple mid-span dynamic mechanisms 40, causing them to expand vertically to support the center points of multiple floor slab units 60 upwards. Tension rods 50 are stretched at the bottom of the multiple mid-span dynamic mechanisms 40, and the tension rods 50 tighten the anchoring mechanism. The anchoring mechanism is subjected to tension to press the slab supports of the multiple floor slab units 60 downwards in the first continuous reinforcement direction, thereby completing the self-balancing reinforcement of the multiple floor slab units 60.

[0104] Secondly, bidirectional reinforcement methods (such as...) Figure 1 and Figure 9 (as shown)

[0105] The tops of multiple mid-span power mechanisms 40 are connected to the bottom surfaces of the center points of multiple floor slab units 60;

[0106] The reinforcement directions are defined as the second continuous reinforcement direction and the third continuous reinforcement direction, and the reinforcement boundaries of multiple floor slab units 60 are determined along the second continuous reinforcement direction and the third continuous reinforcement direction.

[0107] At the reinforced boundaries of multiple floor slab units 60, corresponding boundary support anchoring units 10 or load-bearing wall anchoring units 30 are arranged; wherein, if the reinforced boundary is an edge beam, the boundary support anchoring unit 10 is installed on the edge beam, and the edge beam is further subdivided into a first edge beam or a second edge beam, and the installation of the boundary support anchoring unit 10 is completed according to the subdivision result and the aforementioned text; if the reinforced boundary is a load-bearing wall, the load-bearing wall anchoring unit 30 is installed on the load-bearing wall;

[0108] Along the second and third continuous reinforcement directions, multiple intermediate span support anchoring units are arranged within the reinforcement boundaries of multiple floor slab units 60.

[0109] Multiple pairs of tension rods 50 are used to connect the anchoring mechanism and the mid-span power mechanism 40;

[0110] External force is applied to multiple mid-span dynamic mechanisms 40, causing them to expand vertically to support the center points of multiple floor slab units 60 upwards. Tension rods 50 are stretched at the bottom of the multiple mid-span dynamic mechanisms 40, and the tension rods 50 tighten the anchoring mechanism. The anchoring mechanism is subjected to tension to press the four slab supports of the multiple floor slab units 60 downwards, thereby completing the self-balancing reinforcement of the multiple floor slab units 60.

[0111] Finally, a specific example is given of a bidirectional reinforcement method for multiple floor slab units 60 with a horizontal * vertical ratio of 4 * 1 floor slab units 60:

[0112] like Figure 12 As shown, the structure to be reinforced (continuous slab) consists of multiple (four) floor slab units 60 with a horizontal * vertical ratio of 4 * 1 floor slab units 60;

[0113] like Figure 13 As shown, the tops of the four mid-span power mechanisms 40 are connected to the bottom surfaces of the center points of multiple floor slab units 60;

[0114] like Figure 14 As shown, multiple boundary support anchoring units 10 are installed on the reinforced boundary (in accordance with the installation process of the first side beam), and holes are made at preset positions in the load-bearing wall (to prepare for the installation of the load-bearing wall anchoring unit 30).

[0115] Next, as Figure 1 As shown, multiple pairs of tension rods 50 are used to connect the anchoring mechanism (multiple boundary support anchoring units 10 and one load-bearing wall anchoring unit 30) with four mid-span power mechanisms 40. Pre-tightening force is applied through the turnbuckle nuts on the tension rods 50, thus completing the installation of the reinforcement system, which can then be put into use.

[0116] Subsequently, by tightening the jacking device 42, the self-balancing reinforcement of the floor slab unit 60 can be achieved.

[0117] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A continuous slab dual-zone prestressed self-balancing reinforcement device based on top anchor and bottom bracing, characterized in that, include: At least one pair of anchoring mechanisms, the pair of anchoring mechanisms being symmetrically installed on the symmetrical slab supports of the floor slab unit (60) of the building; A mid-span power mechanism (40) is arranged below the center point of the floor slab unit (60), and the top of the mid-span power mechanism (40) is connected to the bottom surface of the center point of the floor slab unit (60). At least one pair of tension rods (50), the first end of the pair of tension rods (50) is connected to the pair of anchoring mechanisms, and the second end of the pair of tension rods (50) is connected to the two opposite ends of the bottom of the mid-span power mechanism (40); The mid-span power mechanism (40) is subjected to external force and expands vertically to support the center point of the floor slab unit (60) upward. The bottom of the mid-span power mechanism (40) pulls the tension rod (50), the tension rod (50) pulls the anchoring mechanism, and the anchoring mechanism is subjected to tension to press the slab support of the floor slab unit (60) downward.

2. The continuous slab dual-zone prestressed self-balancing reinforcement device based on top anchor and bottom support according to claim 1, characterized in that, The anchoring mechanism is in pairs. One pair of anchoring mechanisms is arranged opposite each other in the transverse direction of the floor slab unit (60), and the other pair of anchoring mechanisms is arranged opposite each other in the longitudinal direction of the floor slab unit (60). The anchoring mechanism includes a boundary support anchoring unit (10), an intermediate support anchoring unit (20), and a load-bearing wall anchoring unit (30).

3. The continuous slab dual-zone prestressed self-balancing reinforcement device based on top anchor and bottom support according to claim 2, characterized in that, The floor slab unit (60) includes edge beams; The boundary support anchoring unit (10) is installed on the side beam; the boundary support anchoring unit (10) is connected to the first end of the tension rod (50) and presses the side beam downward through the tension of the tension rod (50); The boundary support anchoring unit (10) includes: An anchoring steel sleeve (11) is provided on the side beam. The anchoring steel sleeve (11) includes a first steel plate and a second steel plate, which are vertically connected. The first steel plate clamps the side of the side beam in the vertical direction, and the second steel plate clamps the top surface of the side beam in the horizontal direction. An anchor lug (12) is fixed to the top of the second steel plate, and the first end of the tension rod (50) is connected to the anchor lug (12) to transmit the tension of the tension rod (50) to the side beam.

4. The continuous slab dual-zone prestressed self-balancing reinforcement device based on top anchor and bottom support according to claim 2, characterized in that, The floor slab unit (60) includes a central beam; The intermediate support anchoring unit (20) is installed on the middle beam. The intermediate support anchoring unit (20) is connected to the first end of the two tension rods (50) and presses the middle beam downward through the tension of the two tension rods (50). The intermediate support anchoring unit (20) includes: A grooved connecting plate (21) is fixed on the middle beam; Two connectors (22) are symmetrically hinged at both ends of the grooved connecting plate (21); the two connectors (22) are connected to the first ends of the two tension rods (50) to press the middle beam downward under the tension of the two tension rods (50).

5. The continuous slab dual-zone prestressed self-balancing reinforcement device based on top anchor and bottom support according to claim 2, characterized in that, The floor unit (60) includes load-bearing walls; The load-bearing wall anchoring unit (30) is installed on the load-bearing wall; The load-bearing wall anchoring unit (30) includes: Back pressure steel plate (31), the inner sidewall of which is tightly attached to the load-bearing wall; The first surface of the wedge seat (32) is in close contact with the outer wall of the back pressure steel plate (31); The wall anchor (33) is in close contact with the second side of the wedge seat (32); the first end of the tension rod (50) passes through the load-bearing wall, the back pressure steel plate (31) and the wedge seat (32) and is fixedly connected to the wall anchor (33).

6. The continuous slab dual-zone prestressed self-balancing reinforcement device based on top anchor and bottom support according to claim 1, characterized in that, The mid-span power mechanism (40) includes: The pressure-bearing base (41) is located below the center point of the floor unit (60), and the second ends of at least one pair of tension rods (50) are fixedly connected to the opposite ends of the pressure-bearing base (41). A lifting device (42) is fixed vertically on the pressure-bearing base (41), and the lower end of the lifting device (42) is connected to the upper surface of the pressure-bearing base (41); the lifting device (42) is opened vertically by external force. Top support plate (43), the top support plate (43) is fixed to the top of the jack (42) and connected to the center point of the bottom surface of the floor unit (60); The lifting device (42) is opened by external force, the top support plate (43) supports the center point of the floor unit (60) upward, the lifting device (42) presses the pressure base (41) downward, and the pressure base (41) pulls the tension rod (50).

7. The continuous slab dual-zone prestressed self-balancing reinforcement device based on top anchor and bottom support according to claim 1, characterized in that, The tension rod (50) includes: A first tie rod (51) and a second tie rod (52); wherein, the first end of the first tie rod (51) is connected to the anchoring mechanism, the first end of the second tie rod (52) is connected to the mid-span power mechanism (40), and the second end of the first tie rod (51) is connected to the second end of the second tie rod (52); Adjustable connector (53); the second end of the first pull rod (51) and the second end of the second pull rod (52) are connected by the adjustable connector (53); the adjustable connector (53) is used to adjust the overall length and preload of the tension rod (50).

8. A method for dual-zone prestressed self-balancing reinforcement of continuous slabs based on top anchors and bottom supports, characterized in that, The method is applied to the apparatus according to any one of claims 1-7, and the method comprises: Connect the top of the mid-span power mechanism (40) to the bottom surface of the center point of the floor slab unit (60), and symmetrically install at least one pair of anchoring mechanisms on the symmetrical plate supports of the floor slab unit (60); The first end of the tension rod (50) is connected to the anchoring mechanism, and the second end of the tension rod (50) is connected to the bottom end of the mid-span power mechanism (40) to complete the corresponding connection between the mid-span power mechanism (40) and at least one pair of anchoring units. An external force is applied to the mid-span power mechanism (40), causing the mid-span power mechanism (40) to expand vertically to support the center point of the floor slab unit (60) upwards. The bottom of the mid-span power mechanism (40) pulls the tension rod (50), and the tension rod (50) pulls the anchoring mechanism. The anchoring mechanism is subjected to tension to press the slab support of the floor slab unit (60) downwards, thereby completing the self-balancing reinforcement of the floor slab unit (60).

9. A continuous slab dual-zone prestressed self-balancing reinforcement system based on top anchor and bottom bracing, characterized in that, The system includes: Multiple reinforcement devices, wherein the reinforcement device is a continuous slab double-zone prestressed self-balancing reinforcement device based on top anchor and bottom support as described in any one of claims 2 to 7; The reinforcement devices are arranged in an array and correspond one-to-one at multiple floor slab units (60) of the building. The adjacent slab supports of two adjacent reinforcement devices share a common intermediate support anchoring unit (20) for connection.

10. A method for dual-zone prestressed self-balancing reinforcement of continuous slabs based on top anchors and bottom supports, characterized in that, The method is applied to the system of claim 9, and the method includes: The top of multiple mid-span power mechanisms (40) is connected to the bottom of the center point of multiple floor slab units (60); Determine the reinforcement boundaries of multiple floor slab units (60), and install multiple anchoring mechanisms on the slab supports of multiple floor slab units (60); The first end of the tension rod (50) is connected to the anchoring mechanism, and the second end of the tension rod (50) is connected to the bottom end of the mid-span power mechanism (40) to complete the corresponding connection between the multiple mid-span power mechanisms (40) and the multiple anchoring units. An external force is applied to the multiple mid-span power mechanisms (40) to drive the multiple mid-span power mechanisms (40) to expand vertically to support the center point of the multiple floor slab units (60) upwards. The bottom of the multiple mid-span power mechanisms (40) is tightened with multiple pairs of tension rods (50). The multiple pairs of tension rods (50) tighten the multiple anchoring mechanisms. The multiple anchoring mechanisms are subjected to tension to press the slab supports of the multiple floor slab units (60) downwards, so as to complete the self-balancing reinforcement of the multiple floor slab units (60).

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