Construction method for non-disassembly jacking repair of load-bearing wood components of multi-layer wood structure building

Abstract

The application discloses a construction method for non-disassembly jacking repair of a load-bearing wood component of a multi-layer wood structure building, and comprises the following construction steps: determining a load-bearing wood component to be jacked up, designing the form and specifications of a jacking system, opening a vertical installation space, installing the jacking system, arranging monitoring points, jacking up, structure rectification and repair construction, unloading and falling back after the repair is completed, and monitoring the shape of the load-bearing wood component again to complete the jacking and unloading. The jacking system is erected around the damaged load-bearing wood component, wherein the load-unloading steel structure operation frame serves as the bearing and transmission of the vertical load, provides support for wood structure deformation correction, and different jacking load transmission steel components are designed according to the modeling characteristics of different wood components. The upper load of the damaged wood component is lifted and transmitted to the operation frame, and then the load is conducted to the ground, so that the connection between the wood component and the lower structure is loosened, and the repair or replacement of the damaged wood component at the position is completed.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of non-destructive repair of wood structure buildings, in particular to a construction method for non-disassembly jacking repair of load-bearing wood components of multi-storey wood structure buildings. BACKGROUND

[0002] Traditional Chinese ancient buildings are mainly large wood structure buildings, and the characteristics of large wood structure ancient buildings are embodied in diversified architectural forms, complex structural design, and superb craftsmanship. However, with the influence of wind and rain erosion, load action, earthquake disturbance, etc. for thousands of years, these ancient buildings also face durability problems such as structural deformation, settlement and distortion, component damage, and material decay. In particular, wood, the main material of ancient buildings, is easily corroded by insects, fungi, and water, causing decay of wood components. Therefore, settlement and distortion, deviation correction and reinforcement, and component repair of wood structures are the key work of ancient building repair and reinforcement, especially when large-scale multi-storey ancient buildings have structural deformation and important node damage, which has affected the overall structural safety of the ancient buildings and needs to be repaired urgently.

[0003] The traditional method for repairing such problems is divided into the following types according to the degree of damage from light to heavy:

[0004] I. When the wood component damage is slight, repair and reinforcement can be used.

[0005] II. When the building has few storeys and structural damage occurs, the method of hitting and straightening can be used: without disassembling the wood frame, the inclined, twisted, and tenon-pulled frame is reset, and then the overall reinforcement is carried out; at the same time, individual severely damaged components are replaced or other repair and reinforcement measures are taken.

[0006] III. When the building structure is complex, has many storeys, and has structural problems, only the disassembly type of frame repair can be used: the wood frame is disassembled and repaired, the severely damaged components are replaced, and then the frame is reinstalled and overall reinforcement is carried out during installation. However, "frame repair" requires disassembling a large area of wood frame, which will disturb a large amount of historical cultural relics information. In particular, the repair of structural problems should focus on load-bearing components, and the uneven settlement and distortion of ancient buildings are caused by problems in load-bearing components.

[0007] On the basis of ensuring the repair criteria of "not changing the original state of cultural relics, minimum intervention, and reducing disturbance", there is an urgent need for a construction method for non-destructive jacking repair of load-bearing components of wood structure buildings through non-disassembly. SUMMARY

[0008] The application aims to provide a construction method for non-disassembly jacking repair of load-bearing wood components of multi-storey wood structure buildings.

[0009] To achieve the above-mentioned purpose, the application adopts the following technical scheme:

[0010] A construction method for non-disassembly jacking repair of load-bearing wood components of multi-storey wood structure buildings, the construction steps are as follows:

[0011] Step one: according to the damage position and damage degree of the wood structure building, determine the load-bearing wood component to be jacked up, and then according to the stress condition of the load-bearing wood component, divide the components around it into non-disassembly components and disassembly non-load-bearing components;

[0012] Step two, design the form and specification of the jacking system, which includes a force transmission and load shedding operation steel frame and a jacking force transmission steel component, and then according to the positional relationship between the non-disassembly components and the disassembly non-load-bearing components, determine the arrangement position and structure form of the force transmission and load shedding operation steel frame;

[0013] The force transmission and load shedding operation steel frame is a vertical through-plug wood structure building, a through-high ground-fall steel structure frame arranged around the load-bearing wood component to be jacked up, and the jacking force transmission component is arranged at the jacking position of the load-bearing wood component to be jacked up, which cooperates with the force transmission and load shedding operation steel frame to unload the upper load of the load-bearing wood component to the force transmission and load shedding operation steel frame, so that it is separated from the structure below;

[0014] Step three, according to the upper load borne by the load-bearing wood component to be jacked up, the self-weight of the force transmission and load shedding operation steel frame and the self-weight of the jacking force transmission component, design the foundation structure of the force transmission and load shedding operation steel frame;

[0015] Step four, locally unload the roof surface of the building at the corresponding position of the load-bearing wood component to be jacked up, remove the disassembly non-load-bearing components around the load-bearing wood component to be jacked up, and open the vertical installation space of the force transmission and load shedding operation steel frame inside the wood structure building;

[0016] Step five, line positioning, construct the foundation structure on the ground, transport the force transmission and load shedding operation steel frame to the site and anchor the bottom to the foundation structure, and install it layer by layer upwards through the vertical installation space;

[0017] Step six, transport the jacking force transmission steel component to the site and install it on the load-bearing wood component to be jacked up at the corresponding layer;

[0018] Step seven, symmetrically arrange the jacking device between the jacking force transmission steel component and the force transmission and load shedding operation steel frame at the corresponding position.

[0019] Step eight, monitoring points are arranged on the load-bearing timber members to be jacked up, the force transmission steel frame and the jacking force transmission steel member, and the settlement and distortion of each load-bearing timber member and the stress stability of each steel member during jacking and unloading are monitored;

[0020] Step nine, trial jacking: start each jacking device at a constant speed simultaneously, and jack up the load-bearing timber member by 3-5 cm, then stand still for at least 12 hours, and check whether the stress system meets the stress requirements according to the collected data of the monitoring points;

[0021] Step ten, formal jacking: start each jacking device at a constant speed again, until the bottom of the load-bearing timber member reaches the construction height for repair;

[0022] Step eleven, structural rectification and repair construction is carried out between the jacked load-bearing timber member and the structure below;

[0023] Step twelve, after the repair is completed, slowly unload the jacking devices on both sides at a constant speed, and monitor the shape of the load-bearing timber member again to complete the jacking and unloading;

[0024] Step thirteen, disassemble each member of the jacking system and move it to the subsequent repair point, and repeat steps four to twelve until all repair construction is completed.

[0025] The timber structure building includes two or more load-bearing timber members to be jacked up, each layer of load-bearing timber member needs to be jacked up a few times to reach the construction height, and the load-bearing timber members of adjacent layers need to be mutually supported and rotated during jacking until all are jacked up to the construction height.

[0026] The timber structure building is a rectangular building, and the load-bearing timber members are located at the four corners. The construction flow section is divided into four corners, including a first construction area, a second construction area, a third construction area and a fourth construction area. The first construction area and the fourth construction area, and the second construction area and the third construction area are located at diagonal positions. First, the first construction area is constructed, then the fourth construction area is constructed, and finally the second construction area and the third construction area are symmetrically constructed.

[0027] The force transmission and unloading operation steel frame includes a column structure, a beam structure, a frame support, an operation platform plate and a protection structure,

[0028] The column structure comprises two structure inner columns and two structure outer columns, the two structure inner columns are symmetrically arranged, located inside the wood structure building, on the inner side of the load-bearing wood member and passing through the vertical installation space, the two structure outer columns are symmetrically arranged, located outside the wood structure building, the horizontal projection connecting line of the longitudinal axis of the column structure is a isosceles trapezoid, wherein the connecting line of the structure inner column is parallel to the connecting line of the structure outer column, the distance between the structure inner columns is less than the distance between the structure outer columns, and the horizontal projection of the load-bearing wood member is located on the central axis of the isosceles trapezoid.

[0029] The beam structure is arranged in layers below the jacking position, the horizontal projection connecting line of each layer of the beam structure is an isosceles trapezoid, and the beam structure comprises two main beams and two secondary beams, the main beams are symmetrically and fixedly connected between the structure inner columns and the structure outer columns, and the secondary beams are fixedly connected between the structure inner columns and between the structure outer columns.

[0030] The frame body is fixedly connected between the main beams, the structure inner columns and / or the structure outer columns of each layer, the operation platform plate is paved on the beam structure, and the protection structure is enclosed around the operation platform plate.

[0031] The load-bearing wood member comprises a wood column, the jacking position is arranged at the top of each layer of wood column, and the jacking force transmission steel member comprises a hoop type jacking frame, the hoop type jacking frame comprises two split hoops, each hoop comprises a semicircular hoop piece and a jacking steel beam, the jacking steel beam is fixedly connected to the center of the outer wall of the hoop piece, the end of the hoop piece is provided with a hoop piece ear plate, and the two hoop pieces are fixedly connected into a hoop ring through connecting bolts between the hoop piece ear plates; the hoop ring is enclosed outside the wood column, the upper gap between the hoop ring and the wood column is tightly plugged through a wedge-shaped steel clamp, the wedge-shaped steel clamp is a solid piece or a hollow piece, comprises an outer wall plate and an inner wall plate, the inner wall plate is provided with a horizontal anti-skid steel rib, and when the wedge-shaped steel clamp is a hollow piece, the wedge-shaped steel clamp further comprises a clamp stiffening plate fixedly connected between the outer wall plate and the inner wall plate.

[0032] The jacking steel beam is arranged below the adjacent main beams in a space intersection mode, and the jacking device is arranged between the jacking steel beam and the main beam.

[0033] The force transmission and unloading operation steel frame further comprises a wood column horizontal constraint hoop, the wood column horizontal constraint hoop comprises two split semicircular limiting hoops, the end of the limiting hoop is provided with a limiting ear plate, the two limiting hoops are fixedly connected into a limiting ring through connecting bolts between the limiting ear plates, the limiting ring is enclosed outside the wood column and leaves a gap with the wood column, the outer wall of the limiting ring is provided with a pull ear plate in the direction of each column structure, and the pull ear plate and the inner side of each column structure corresponding to the pull ear plate are provided with a lateral force resisting pull rod.

[0034] The jacking device is a jack, and the top surface of the main beam is provided with a jack clamping plate, the jack clamping plate comprises two split clamping pieces, each clamping piece comprises a connecting part and a clamping part, the connecting part is fixedly connected with the edge part of the main beam, and the clamping part is a vertical C-shaped limiting plate connected with the connecting part, the two vertical C-shaped limiting plates are non-connected to form a clamping groove, the inner diameter of the clamping groove is adapted to the size of the jack, and the bottom of the jack is seated in the clamping groove.

[0035] The load-bearing wood component comprises a corbel, and the jacking position is arranged at the bottom of the corbel, and the jacking force transmission steel component comprises a corbel bracket, the corbel bracket comprises two split half brackets, the two half brackets are enclosed to form a bracket ring, the bracket ring has a C-shaped cross section, and comprises an inner wall ring plate, an upper flange ring plate and a lower flange ring plate, the inner diameter of the inner wall ring plate is adapted to the diagonal line size of the corbel, and the inner wall ring plate encloses the corbel and clamps the corbel around, and the top surface of the upper flange ring plate is tightly attached to the lower surface of the lowermost wood component of the corbel.

[0036] The bracket ring is provided with a bracket ring stiffener in the groove formed between the inner wall ring plate, the upper flange ring plate and the lower flange ring plate, and the end connecting positions of the two half brackets are symmetrically provided with elongated steel beams, the elongated steel beams are channel steels, comprising a web, a top plate and a bottom plate, the web is perpendicular to the inner wall ring plate, the inner end of the elongated steel beam is fixedly connected with the inner wall ring plate, the upper flange ring plate is widened at the connecting end to form a transition, is flush with and fixedly connected with the top plate, the lower flange ring plate is widened at the connecting end to form a transition, is flush with and fixedly connected with the bottom plate, and the webs of the elongated steel beams on the same side are tightly attached and fixedly connected through connecting bolts.

[0037] When the corbel is jacked up, the bottom of the corbel bracket is provided with a jacking device for jacking up or jacking up by pulling up the corbel bracket;

[0038] When the lower layer of corbel to be jacked up is combined with the wood column to be jacked up, the hoop jacking frame and the corbel bracket are integrally stressed by being pulled up and down through the drop chain, the top end of the drop chain is pulled and connected with the lifting ring arranged on the hoop ring, and the bottom end of the drop chain is sleeved with the bracket ring arranged at the corresponding position on the hoop ring, or the bottom end of the drop chain is pulled and connected with the lifting hole arranged at the corresponding position on the bracket ring stiffener.

[0039] Compared with the prior art, the present application has the following characteristics and beneficial effects:

[0040] The present application provides a non-disassembly jacking repair scheme for the damage of the main load-bearing components of the multi-layer wood structure building, such as the rotten column root of the wood column, the crushing deformation of the corbel, the deformation and cracking of the corbel, and the uneven settlement of the structural components, the components at the repair site are jacked up layer by layer to loosen the nodes, and the subsequent non-disassembly in-situ correction of the structural deformation can be realized, the damaged structural components can be repaired, and the damage to the structure caused by the traditional dismantling and repair can be avoided.

[0041] The present application provides a lifting system around the damaged load-bearing wood component, wherein the force transmission and load relief steel structure operating frame is used as the bearing and transmission of the vertical load, provides support for the wood structure deformation correction, and designs different lifting force transmission steel components for the modeling characteristics of different wood components, lifts and transmits the upper load of the damaged wood component to the operating frame, and then conducts the load to the ground, thereby loosening the connection between the wood component and the lower structure, and completing the repair or replacement of the damaged wood component at the position. The force transmission and load relief steel structure operating frame is a multi-layered isosceles trapezoidal steel frame system arranged at the corner of the ancient building, which is composed of four round steel pipe bearing columns and multi-layered main and secondary I-beams to form a stable operating platform, and is pre-fabricated by bolts without fire in the field, and is designed to be close to the isosceles triangular stress system, and is the main device for bearing and transmitting the upper vertical load of the multi-layered wood component. The bottom of the operating frame is anchored to the concrete foundation by a steel plate base, so that the overall stability is achieved without disturbing the original ancient building ground, and the operating frame can be repeatedly used. The operating frame meets the bearing requirements of the damaged component under the condition of non-disassembly, has small cross interference with the ancient building, has small amount of wood component removal, creates repair space at the damaged part, has high applicability, and has clear stress system.

[0042] The present application adaptively designs a wood column hoop type lifting frame for overall lifting of the wood column and a wood column horizontal restraint hoop for preventing tilting and flashing, which is used for hoop connection with the wood column and non-destructive lifting. The half-circular hoop is split, and after bolt locking, a wedge-shaped steel card is inserted into the joint to form sufficient effective friction on the wood column. When lifting, an upward force is applied to the short steel beam on the hoop, and the wood column and the upper structure are lifted linearly by the friction force, the column bottom joint is loosened, the wood structure is not damaged, the operation is simple, the original stress line is not changed, the wood column horizontal restraint hoop is matched to prevent tilting and flashing, the lifting stability is ensured, and the application can be expanded, that is, a lifting lug is added to the hoop to connect the upper and lower structures, for example, to connect the lower bracket of the bracket arch, so that the effect of multi-layer synchronous lifting is achieved.

[0043] The present application adaptively designs a bracket arch for overall lifting of the bracket arch. The bracket arch is a combined structure, and the main force transmission component at the bottom presents a cross or a cross-shaped form. In general, the bracket arch needs to be lifted as a whole, the lower joint is loosened, and then the repair is completed. The bracket arch of the present application is suitable for overall lifting of the bracket arch when the ancient building containing the bracket arch has component damage, local crushing and uneven settlement of the structure. The bracket arch is split into a half-circular ring-shaped steel component, the inner diameter matches the diagonal line size of the bracket, the ring-shaped upper surface is matched with the lowest component of the bracket arch, the lifting force is uniformly dispersed, and local crushing is avoided. The bracket arch can be lifted as a whole by applying an upward pulling force or a lower lifting force to the combined bracket. The bracket arch forms balanced overall jacking at the bottom of the bracket arch, the operation is simple, the original stress line is not changed, and the application can be expanded, that is, a lifting ring is arranged on the bracket arch to connect the upper and lower structures, for example, to connect the upper hoop type lifting frame, so that the effect of multi-layer synchronous lifting is achieved.

[0044] The present application can be repaired without disassembly, and the nodes are lifted layer by layer without disassembly of the wood structure, so that the rotten column root and crushed eaves can be replaced, and the original structure is maximally preserved; meanwhile, the friction lifting of the hoop, the balanced lifting of the eaves and the like avoid drilling or cutting of the wood components, and the original stress path is maintained; the operation frame provides a stable support platform, supports multi-layer synchronous construction in combination with the lifting device, and has almost no damage to the wood components and the building ground during the lifting and releasing process; the steel components are standardized prefabricated and assembled by bolts, the site risk and labor cost are reduced, the reusable components reduce the cost, the disturbance to the ancient building is small, and the method is suitable for repairing various types of components such as corner columns and eaves, and is especially suitable for the ancient building environment with limited space. BRIEF DESCRIPTION OF DRAWINGS

[0045] The present application will be further described in detail below with reference to the drawings.

[0046] Figure 1 is a plane structure schematic diagram of the wood structure building provided with the lifting system according to an embodiment of the present application.

[0047] Figure 2 is an elevation structure schematic diagram of the wood structure building provided with the lifting system according to an embodiment of the present application.

[0048] Figure 3 is Figure 2 a detailed view of the load-bearing wood component and the lifting system.

[0049] Figure 4 is Figure 3 a partial enlarged view in the

[0050] Figure 5 is Figure 1 a partial enlarged view of the first construction area in the

[0051] Figure 6 is a plane structure diagram of the relative positions of the column structure, the beam structure and the body support in the load transfer and unloading operation steel frame and the wood column.

[0052] Figure 7 is a plane structure diagram of the relative positions of the wood column horizontal restraint hoop and the wood column.

[0053] Figure 8 is a plane structure diagram of the relative positions of the hoop type lifting frame and the wood column.

[0054] Figure 9 is an elevation structure diagram of the relative positions of the hoop type lifting frame and the wood column.

[0055] Figure 10 is Figure 9 a 90-degree rotation schematic diagram.

[0056] Figure 11 is a structure enlarged view of the jack clamping plate.

[0057] Figure 12 is a perspective view of the structure of the wedge-shaped steel clamping piece. Figure 11

[0058] Figure 13 is a perspective view of the structure of the wedge-shaped steel clamping piece.

[0059] Figure 14 is a perspective view of the structure of the wedge-shaped steel clamping piece. Figure 13

[0060] Figure 15 is a perspective view of the structure of the wedge-shaped steel clamping piece. Figure 14

[0061] Figure 16 is a perspective view of the structure of the wedge-shaped steel clamping piece.

[0062] Figure 17 is a perspective view of the structure of the wedge-shaped steel clamping piece.

[0063] Figure 18 is a perspective view of the structure of the wedge-shaped steel clamping piece.

[0064] Figure 19 is a perspective view of the structure of the wedge-shaped steel clamping piece. Figure 18

[0065] Figure 20 is a perspective view of the structure of the wedge-shaped steel clamping piece. Figure 19

[0066] Figure 21 is a perspective view of the structure of the wedge-shaped steel clamping piece.

[0067] Figure 22 is a perspective view of the structure of the wedge-shaped steel clamping piece.

[0068] Figure 23 is a perspective view of the structure of the wedge-shaped steel clamping piece.

[0069] Figure 24 is a perspective view of the structure of the wedge-shaped steel clamping piece.

[0070] Figure 25 is a perspective view of the structure of the wedge-shaped steel clamping piece.

[0071] Figure 26 is a perspective view of the structure of the wedge-shaped steel clamping piece.

[0072] ​​​​​Figures: 1 - wooden structure building, 11 - first construction area, 12 - second construction area, 13 - third construction area, 14 - fourth construction area, 2 - force transfer unloading operation steel frame, 21 - structure inner column, 22 - structure outer column, 23 - main beam, 24 - secondary beam, 25 - frame body support, 3 - vertical installation space, 4 - jacking device, 5 - foundation structure, 51 - flange connection base, 52 - column bottom steel plate, 53 - ground protection layer, 6 - wooden column, 7 - hoop jacking frame, 71 - hoop piece, 72 - jacking steel beam, 73 - hoop piece ear plate, 74 - jacking stiffener plate, 8 - wedge-shaped steel clamping piece, 81 - outer wall plate, 82 - inner wall plate, 83 - clamping piece stiffener plate, 84 - anti-skid steel rib, 9 - wooden column horizontal restraint hoop, 91 - limiting ear plate, 92 - pull connection ear plate, 93 - lateral force resisting pull connection rod, 10 - connecting bolt, 20 - jack clamping plate, 201 - connecting part, 202 - clamping part, 203 - fixing bolt, 30 - corbel, 40 - corbel bracket, 41 - inner wall ring plate, 42 - upper flange ring plate, 43 - lower flange ring plate, 44 - supporting ring stiffener plate, 45 - extended steel beam, 451 - web plate, 452 - top plate, 453 - bottom plate, 50 - drop chain, 60 - lifting ring, 70 - lifting hole. DETAILED DESCRIPTION

[0073] EXAMPLES Figures 1-2 As shown, a four-story wooden structure ancient building in a certain place has been reconstructed on site, but due to the constraints of material conditions and construction period requirements and other aspects during reconstruction, the wooden structure is built using fresh wet wood, i.e. green wood. Due to the low strength of wet wood itself, and the combined effects of material drying shrinkage, structural stress and other reasons after construction, the building produces complex internal forces, resulting in problems such as overall structural deformation and node compression damage of the building, and individual parts have shown endangered phenomena, i.e. the building has overall structural deformation. The building is rectangular in plan, and uneven settlement of the building is measured, with the most serious settlement at the corners, and the maximum vertical compression deformation is about 0.5m. According to the analysis, the corner settlement deformation occurs at the corner column position, and the settlement is mainly concentrated at the corbel due to the anisotropic characteristics of wood.

[0074] When a wooden structure building has complex structure, multiple stories and structural problems, the traditional method can only use the method of disassembling and repairing the building by removing the frame, disassembling and removing the wooden frame in whole or in part, repairing and replacing the seriously damaged components, and then reinstalling them. However, the "frame removal and repair" method needs to disassemble a large area of wooden frame, which will disturb a large amount of historical cultural relics information.

[0075] Now focus on the uneven settlement of the building is adjusted, moderate recovery of the design of each layer of column network relationship, to ensure the integrity of the structure. Since the first floor corner column has not settled, the plan will be building four layers to two layers of corner column layer by layer, and together with the lifting of three layers to one layer of corbel, loose each layer of column node, the layer of corner column and the lower layer of corbel together with the lower layer of corner column, after the completion of the lifting of the loose position of the wood components are repaired, after reinforcement back to the upper layer of components to the lower layer of corner column.

[0076] Step one: see Figure 1 The wood structure building 1 in the embodiment is a rectangular building, and the load-bearing wood components are located at the four corners. The construction flow section is divided into four corners, including the first construction area 11, the second construction area 12, the third construction area 13 and the fourth construction area 14. The first construction area 11 and the fourth construction area 14, the second construction area 12 and the third construction area 13 are located at the diagonal line positions. First, the first construction area 11 is constructed, then the fourth construction area 14 is constructed, and finally the second construction area 12 and the third construction area 13 are symmetrically constructed.

[0077] According to the damage position and damage degree of the wood structure building 1, the load-bearing wood components to be lifted in each construction area are determined, and then according to the stress condition of the load-bearing wood components, the components around the load-bearing wood components are divided into non-detachable components and detachable non-load-bearing components.

[0078] Step two: design the form and specification of the lifting system, which includes the force transmission and unloading operation steel frame 2 and the lifting force transmission steel component, and then according to the position relationship of the non-detachable components and the detachable non-load-bearing components, the arrangement position and structure form of the force transmission and unloading operation steel frame are determined.

[0079] See Figure 2 The force transmission and unloading operation steel frame 2 is a vertical steel structure frame penetrating the wood structure building 1 and arranged around the load-bearing wood component to be lifted. The lifting force transmission component is arranged at the lifting position of the load-bearing wood component to be lifted, which cooperates with the force transmission and unloading operation steel frame 1 to unload the upper load of the load-bearing wood component to the force transmission and unloading operation steel frame 1, so that it is loose and separated from the structure below. Each steel component is processed in the factory.

[0080] In this embodiment, the force transmission and unloading operation steel frame 2 includes column structure, beam structure, frame support, operation platform plate and protection structure around the load-bearing wood component.

[0081] See Figures 3-6As shown in Figures 18-20, the column structure includes internal columns 21 and external columns 22. Two internal columns 21 are symmetrically arranged inside the wooden structure 1, inside the load-bearing wooden components, and passing through the vertical installation space 3. Two external columns 22 are symmetrically arranged outside the wooden structure 1. The horizontal projection of the line connecting the longitudinal axes of the column structure forms an isosceles trapezoid, wherein the line connecting the internal columns 21 is parallel to the line connecting the external columns 22, and the distance between the internal columns 21 is less than the distance between the external columns 22. The horizontal projection of the load-bearing wooden components lies on the central axis of the isosceles trapezoid.

[0082] When designing the column structure, since the corners (45°) and sides (90°) of the wooden structure building have non-removable components, the preferred structure is an isosceles triangle with a symmetrical structure is chosen for the stability and balance of the steel operating frame. However, due to the limitation of the non-removable components at the 45° angle, the interior needs to be divided into two steel columns, thus forming an isosceles trapezoidal column grid. The distance between the outer columns 22 is appropriately increased, and the distance between the inner columns 21 affects the distance between the inner columns 21 and the wooden structure. The distance between the inner columns 21 needs to be reduced as much as possible. The column structure is connected by steel beams, and the span of the steel beams is minimized. The steel beams bear and transfer the loads of the wooden structure and the construction loads of the operating layer. The overall isosceles trapezoidal frame structure has both stability and applicability.

[0083] See Figures 3-4 As shown in Figures 18-20, the beam structure is arranged in layers below the jacking position. The horizontal projection line of each layer of beam structure is an isosceles trapezoid, including two main beams 23 and two secondary beams 24. The main beams 23 are symmetrically fixedly connected between the inner column 21 and the outer column 22 of the structure, and the secondary beams 24 are fixedly connected between the inner column 21 and the outer column 22 of the structure, respectively.

[0084] See Figures 18-20 As shown, the frame support 25 is fixedly connected between the main beams 23, the internal columns 21, and / or the external columns 22 of each floor. The operating platform is laid flat on the beam structure, and the protective structure surrounds the operating platform.

[0085] In this embodiment, a load-bearing and unloading operating steel frame 2 is set up around the load-bearing wooden components that need to be lifted, and an operating platform is set up at the construction site that needs to be repaired. The main body of the load-bearing and unloading operating steel frame 2 adopts a prefabricated steel structure frame, with each column structure using round steel pipes and each beam structure using I-beams. All connections between the steel components are bolted, and the operating platform is made of steel plate. The load-bearing and unloading operating steel frame 2 is 21.32m high. To avoid the internal structure of the building, the distance between the inner column 21 and the outer column 22, i.e., the length of the main beam 23, is set at a spacing of 4m-5m according to the actual situation.

[0086] In this embodiment, the round steel pipe of the column structure is 2m high per section, 300m in diameter, and 6mm in wall thickness, the main beam adopts HN400mmx200mm or HN400mmx300mm I-beam, the column bottom steel plate of the main structure adopts HW200mmx200mm I-beam, and the inter-beam support 25 is two round pipe supports of D75mmx5mm, which are mainly arranged between the outer main beams of the load-bearing wood members. The bottom surface of the column structure is provided with a column bottom steel plate, the structure inner column 22 adopts PL20mmx1700mmx1700mm, and the structure inner column 21 adopts a double-column base PL20mmx2000mmx2000mm due to the limitation of indoor space.

[0087] Due to the structural and site limitations, large transportation machinery cannot be used in ancient building construction, so the component specifications of the force transmission unloading operation steel frame 2 need to fully consider the actual transportation and installation conditions, the height of each section of the column structure can be controlled to about 2m, which is convenient for manual transportation, the beam structure size is optimized as much as possible, and the strength is ensured in the form of structural reinforcement. The size of the steel member also needs to consider the relationship with the large wood structure during transportation and installation, and the amount of demolition is reduced as much as possible, and transportation and installation can be assisted by means of scaffolding and chain hoist.

[0088] In this embodiment, as shown in Figures 3-4 , 8-10, 18-21, the load-bearing wood member to be jacked up includes four layers of wood columns 6, the jacking position is arranged at the top of each layer of wood columns 6, and the jacking force transmission steel member includes a hoop type jacking frame 7. The hoop type jacking frame includes two split hoops, each of which includes a semicircular hoop piece 71 and a jacking steel beam 72. The jacking steel beam 72 is fixedly connected horizontally at the center of the hoop piece 71, the height of the jacking steel beam 72 is not greater than the height of the hoop piece 71, the end of the hoop piece 71 is provided with a hoop piece ear plate 73, and the two hoop pieces 71 are fixedly connected into a hoop ring through connecting bolts 10 between the hoop piece ear plates 73. The hoop ring surrounds the outside of the wood column 6.

[0089] As shown in Figures 13-15 , the upper gap between the hoop ring and the wood column 6 is tightly plugged by a wedge-shaped steel clamp 8. The wedge-shaped steel clamp 8 is a solid piece or a hollow piece, which includes an outer wall plate 81 and an inner wall plate 82. The inner wall plate 81 is provided with a horizontal anti-skid steel rib 84. When it is a hollow piece, it further includes a clamp stiffening plate 83 fixedly connected between the outer wall plate 81 and the inner wall plate 82.

[0090] The hoop type jacking frame 7 needs to be processed according to the actual size of the wood column on site, and is made of steel plate. The hoop piece 71 and the jacking steel beam 72 are spot-welded in the factory. In order to increase the friction, different sizes of wedge-shaped steel clamps are plugged between the hoop ring and the wood column according to the site conditions.

[0091] The jacking steel beam 72 is arranged in space intersection below the adjacent main beam 23, and the jacking device 4 is arranged between the two, and the two jacking devices 4 of each hoop jacking frame 7 are arranged symmetrically left and right. The jacking device 4 is in the jacking area of the jacking steel beam 72, and the jacking stiffening plate 74 is arranged between the flange plates of the jacking steel beam 72.

[0092] Referring to Figures 3-4 , 7, 18-20, 22, the force transmission unloading operation steel frame 1 further comprises a wood column horizontal restraint hoop 9, the wood column horizontal restraint hoop 9 comprises two split semicircular limiting hoops, the end of the limiting hoop is provided with a limiting lug plate 91, and the two limiting hoops are fixedly connected into a limiting ring through a connecting bolt 10 between the limiting lug plates 91. The limiting ring is enclosed outside the wood column 6 and has a reserved gap between the wood column 6, and the outer wall of the limiting ring is provided with a pull ear plate 92 in the direction of each column structure. The pull ear plate 92 and the inner side of each column structure corresponding thereto are provided with a lateral force resisting pull rod 93.

[0093] The wood column horizontal restraint hoop 9 is arranged above the middle part of the operation frame to prevent the risk of lateral overturning of the wood column during jacking, and a gap of 1cm-2cm is reserved between the limiting ring and the wood column. The lateral force resisting pull rod 93 is a steel wire rope or a steel rod, the steel wire rope is selected to have a diameter of 14mm and a nominal tensile strength of 1870N / mm², and the steel rod adopts a D20 rod to form a stable support system.

[0094] Referring to Figure 4 , 6 , 8-9, 11-12, 19-20, the jacking device 4 is a jack, and the top surface of the main beam 23 is provided with a jack clamping plate 20 to increase the working stability of the jack. The jack clamping plate comprises two split clamping pieces, each clamping piece comprises a connecting part 201 and a clamping part 202. Since the main beam is an I-beam, the connecting part 201 is C-shaped, and the upper flange plate edge is inserted into the C-shaped groove of the connecting part, and the two are clamped by the fixing bolt 203. The clamping part 202 is a vertical C-shaped limiting plate perpendicular to the connecting part 201, close to the middle part of the upper flange plate of the main beam. Two vertical C-shaped limiting plates are non-connected and enclosed to form a clamping groove, the inner diameter of the clamping groove is adapted to the outer diameter of the jack, and the bottom of the jack is seated in the clamping groove, thereby preventing the jack base from sliding.

[0095] Referring to Figures 3-4, 16-20, 23, the to-be-jacked load-bearing wooden component further comprises a three-layered corbel 30, the jacking position is correspondingly arranged at the bottom of the corbel 30, the jacking force transmission steel component comprises a corbel bracket 40, the corbel bracket 40 comprises two split half brackets, the two half brackets are enclosed to form a bracket ring, the bracket ring has a C-shaped cross section, comprising an inner wall ring plate 41, an upper flange ring plate 42 and a lower flange ring plate 43, the inner diameter of the inner wall ring plate 41 is adapted to the diagonal dimension of the corbel 70, the inner wall ring plate 41 encloses the corbel 70 and is clamped around the corbel 70, and the top surface of the upper flange ring plate 42 is tightly attached to the lower surface of the lowermost layer of the wooden component of the corbel 30.

[0096] A bracket ring stiffening plate 44 is arranged in the groove formed between the inner wall ring plate 41, the upper flange ring plate 42 and the lower flange ring plate 43, and an extension steel beam 45 is symmetrically arranged at the end connecting position of the two half brackets, the extension steel beam 45 is a channel steel, comprising a web plate 451, a top plate 452 and a bottom plate 453, the web plate 451 is perpendicular to the inner wall ring plate 41, the inner end of the extension steel beam 45 is fixedly connected to the inner wall ring plate 41, the upper flange ring plate 42 is widened at the connecting end, is flush with and is fixedly connected to the top plate 452, the lower flange ring plate 43 is widened at the connecting end, is flush with and is fixedly connected to the bottom plate 453, and the web plates 451 of the extension steel beams 45 on the same side are tightly attached and are fixedly connected by connecting bolts 10.

[0097] Referring to Figures 24-26 In the embodiment, the four-layer to-be-jacked wooden column 6 is combined with the three-layer to-be-jacked corbel 30 for jacking, the hoop jacking frame 7 is combined with the corbel bracket 40, the hoop jacking frame 7 and the corbel bracket 40 are integrally stressed by being pulled up and down by the drop chain 50, the top end of the drop chain 50 is pulled to the lifting ring 60 arranged on the hoop ring, the bottom end of the drop chain 50 is sleeved on the bracket ring arranged at the corresponding position on the hoop ring, or the bottom end of the drop chain 50 is pulled to the lifting hole 70 arranged at the corresponding position on the bracket ring stiffening plate 44. The corbel bracket is arranged below the lower to-be-jacked corbel, is connected with the hoop jacking frame 7 through the drop chain 50, and finally the hoop jacking frame 7 is jacked at a uniform speed through the jacks arranged below the two sides of the hoop jacking frame 7, so that the four-layer to-be-jacked wooden column is jacked upward.

[0098] In other embodiments, the corbel 30 can be jacked alone, that is, the corbel bracket 40 is used alone, and the jacking device is arranged at the bottom of the corbel bracket 40 to jack or pull upward to jack the corbel bracket 40.

[0099] Step three, according to the upper load borne by the to-be-jacked load-bearing wooden component, the self weight of the force transmission unloading operation steel frame and the self weight of the jacking force transmission component, the foundation structure 5 of the force transmission unloading operation steel frame 1 is designed.

[0100] Referring to Figure 18As shown, the foundation structure 5 includes a flange connection base 51, a column bottom steel plate 52 and a ground protection layer 53, the flange connection base 51 is fixed on the column bottom steel plate 52, and the bottom of the column structure is fixedly connected with the flange connection base 51. The ground around the building is the original stone ground, which is locally uneven, and protective measures need to be taken to prevent the column bottom steel plate from damaging the stone ground. The ground protection layer 53 is arranged on the stone ground where the column structure is arranged, the fireproof cloth is first laid on the ground, and then the reinforcing layer is laid on the fireproof cloth, the reinforcing layer is selected from C20 fine stone concrete, the laying thickness is 5-15 cm, and the plane is formed, the column bottom steel plate 52 falls on the reinforcing layer, and the fireproof cloth and the reinforcing layer form the ground protection layer 53 to protect the stone ground.

[0101] Step four, see Figures 1-2 As shown, the building roof at the corresponding position of the four-layer load-bearing wood member to be jacked up is unloaded locally, and the load-bearing wood member around each construction area is removed, and the vertical installation space 3 of the load transfer and unloading operation steel frame inside the wood structure building 1 is opened, and the detachable non-load-bearing member includes the indoor wood floor of each layer.

[0102] Step five, line positioning, the foundation structure 5 is constructed on the ground, the load transfer and unloading operation steel frame is transported to the site and anchored at the bottom of the foundation structure 5 of the first construction area 11, and the column bottom steel plate is installed through the vertical installation space 3 layer by layer. Figure 24 As shown.

[0103] Step six, the jacking load transfer steel member is transported to the site and installed on the load-bearing wood member to be jacked up.

[0104] Step seven, the jacking device 4 is arranged between the bottom of the jacking load transfer steel member and the corresponding position of the load transfer and unloading operation steel frame 1, see Figure 25 As shown.

[0105] Step eight, the monitoring points are arranged on the load-bearing wood member to be jacked up, the load transfer and unloading operation steel frame 1 and the jacking load transfer steel member, and the settlement and deflection of each load-bearing wood member and the stress stability of each steel member are monitored during jacking and unloading.

[0106] Step nine, jacking test: start each jacking device 4 at a uniform speed, and check whether the stress system meets the stress requirement according to the collected data of the monitoring points after the load-bearing wood member is jacked up by 3-5 cm and is left for at least 12 hours, mainly aiming at whether the hoop slides, the deflection deformation of the steel beam, the condition of the steel column and the foundation, etc.

[0107] Step ten, formal jacking: Synchronize the jacking device 4 again, and slowly apply pressure to the jacking device to ensure that the upper and lower structures slowly separate. In this embodiment, the four-layer wooden column and the three-layer dougong are lifted together, and the three-layer wooden column is separated. The relative position of the column and the dougong in the first jacking assembly is not changed, and the stability between the two bearing wooden members in each jacking assembly is ensured. The jacking process is as follows: Figure 26

[0108] Step eleven, structural correction and repair construction between the four-layer wooden column and the three-layer dougong after jacking.

[0109] Step twelve, after the repair is completed, slowly synchronize the jacking device 4 on both sides to uniformly unload and fall back, and again monitor the shape of the bearing wooden members to complete the jacking and unloading.

[0110] In this embodiment, the wooden structure building 1 includes three layers, i.e., the four-layer to the two-layer bearing wooden members to be jacked are gradually loosened at the column node of the corresponding layer from top to bottom. Each layer of bearing wooden members needs to be jacked a few times to reach the construction height. The bearing wooden members of adjacent layers need to be mutually supported and rotated during jacking, until all are jacked to the construction height. After the vertical deformation is corrected and repaired, the two-layer to the four-layer are gradually unloaded from bottom to top.

[0111] When the hoop jacking frame 7 is used in combination with the dougong bracket 40 and the force is integrated by the inverted chain, for example, the four-layer wooden column and the three-layer dougong are assembly one, the three-layer wooden column and the two-layer dougong are assembly two, and the two-layer mother column and the one-layer dougong are assembly three. The jacking process is as follows:

[0112] Jacking assembly one to loosen the bottom and assembly two;

[0113] Jacking assembly two to make the bottom of assembly two contact and transmit force to assembly one again, and loosen the bottom of assembly two and assembly three;

[0114] Jacking assembly three to make the bottom of assembly three contact and transmit force to assembly two again, and loosen the bottom of assembly three and the one-layer wooden column;

[0115] Such reciprocating jacking is rotated.

[0116] The inverted chain can be used to adjust the tension of the assembly two and the assembly one when the bottom of the assembly two contacts and transmits force to the assembly one again, so that the relative position of the column and the dougong in the assembly one is not changed. If there is a change, the inverted chain can be used to adjust the tension to ensure the stability between the two bearing wooden members in each jacking assembly.

[0117] Then the unloading process is just the opposite:

[0118] After the repair between assembly three and the one-layer wooden column, assembly three is jacked and unloaded; ​

[0119] The construction space is formed between the assembly two and the assembly three, the repair is carried out between the two, and the assembly two is jacked up and unloaded;

[0120] The construction space is formed between the assembly one and the assembly two, the repair is carried out between the two, and the assembly one is jacked up and unloaded;

[0121] In step thirteen, the jacking system is removed and moved to the subsequent repair point, and steps five to twelve are repeated to carry out the construction of the fourth construction area 14, and then the construction of the second construction area 12 and the third construction area 13 is carried out at the same time, until all the repair work is completed.

Claims

1. A construction method for non-disassembly jacking repair of load-bearing wood members of a multi-storey wood structure building, characterized by, The construction steps are as follows: Step one: according to the damage position and damage degree of the timber structure building (1), determine the load-bearing timber member to be jacked up, and then according to the stress condition of the load-bearing timber member, divide the components around it into non-detachable components and detachable non-load-bearing components; Step two, design the form and specification of the jacking system, which includes the force transmission and load shedding operation steel frame (2) and the jacking force transmission steel member, and then according to the positional relationship between the non-detachable components and the detachable non-load-bearing components, determine the arrangement position and structure form of the force transmission and load shedding operation steel frame; The force transmission and load shedding operation steel frame (2) is a vertical through-hole steel structure frame inserted into the timber structure building (1) and arranged around the load-bearing timber member to be jacked up, and the jacking force transmission member is arranged at the jacking position of the load-bearing timber member to be jacked up, which cooperates with the force transmission and load shedding operation steel frame (1) to unload the upper load of the load-bearing timber member to the force transmission and load shedding operation steel frame (1), so that it is separated from the structure below; Step three, according to the upper load borne by the load-bearing timber member to be jacked up, the self weight of the force transmission and load shedding operation steel frame and the self weight of the jacking force transmission member, design the foundation structure (5) of the force transmission and load shedding operation steel frame (1); Step four, locally unload the building roof at the corresponding position of the load-bearing timber member to be jacked up, remove the detachable non-load-bearing components around the load-bearing timber member to be jacked up, and open the vertical installation space (3) of the force transmission and load shedding operation steel frame inside the timber structure building (1); Step five, line positioning, construct the foundation structure (5) on the ground, transport the force transmission and load shedding operation steel frame to the site and anchor the bottom to the foundation structure (5), and install it layer by layer upwards through the vertical installation space (3); Step six, transport the jacking force transmission steel member to the site and install it on the corresponding layer of the load-bearing timber member to be jacked up; Step seven, symmetrically arrange the jacking device (4) between the jacking force transmission steel member and the corresponding position of the force transmission and load shedding operation steel frame (1); Step eight, arrange monitoring points on the load-bearing timber member to be jacked up, the force transmission and load shedding operation steel frame (1) and the jacking force transmission steel member, and monitor the settlement and distortion of each load-bearing timber member and the stress stability of each steel member during jacking and unloading; Step nine, test jacking: start each jacking device (4) at the same speed, jack up the load-bearing timber member by 3-5 cm, and then stand still for at least 12 hours, and check whether the stress system meets the stress requirements according to the collected data of the monitoring points; Step ten, formal jacking: start each jacking device (4) at the same speed again, until the bottom of the load-bearing timber member reaches the construction height that can be repaired with the structure below; Step eleven, carry out structure rectification and repair construction between the jacked load-bearing timber member and the structure below it; Step twelve, after the repair is completed, slowly and synchronously unload the force from both sides of the jacking device (4) and make it fall back, and then monitor the shape of the load-bearing timber member again to complete the jacking and unloading; Step thirteen, remove each component of the jacking system to the subsequent repair point, and repeat steps four to twelve until all the repair construction is completed.

2. The construction method of non-disassembly jacking repair of multi-layer wood structure building load-bearing wood members according to claim 1, characterized in that: The wood structure building (1) comprises two or more layers of load-bearing wood components to be jacked up, a small number of jacking is required for each layer of load-bearing wood components to reach the construction height, and the load-bearing wood components of adjacent layers need to be mutually supported and rotated in the jacking until all are jacked up to the construction height.

3. The construction method of non-disassembly jacking repair of multi-layer wood structure building load-bearing wood members according to claim 1 or 2, characterized in that: The wood structure building (1) is a rectangular building in plan, the load-bearing wood components are located at the four corners, the construction flow section is divided according to the four corners, comprising a first construction area (11), a second construction area (12), a third construction area (13) and a fourth construction area (14), the first construction area (11) and the fourth construction area (14), the second construction area (12) and the third construction area (13) are located at the diagonal positions respectively; the first construction area (11) is constructed first, then the fourth construction area (14) is continued to be constructed, and finally the second construction area (12) and the third construction area (13) are symmetrically constructed.

4. The construction method of non-disassembly jacking repair of multi-layer wood structure building load-bearing wood members according to claim 1 or 2, characterized in that: The force transmission and unloading operation steel frame (2) comprises column structures, beam structures, frame supports, operation platform plates and protection structures enclosed around the load-bearing wood components, The column structures comprise inner structure columns (21) and outer structure columns (22), the inner structure columns (21) are symmetrically arranged in two, located inside the wood structure building (1), inside the load-bearing wood components and passing through the vertical installation space (3); the outer structure columns (22) are symmetrically arranged in two, located outside the wood structure building (1), the horizontal projection connecting line of the longitudinal axis of the column structure is a isosceles trapezoid, wherein the connecting line of the inner structure columns (21) is parallel to the connecting line of the outer structure columns (22), the distance between the inner structure columns (21) is less than the distance between the outer structure columns (22); the horizontal projection of the load-bearing wood components is located on the central axis of the isosceles trapezoid; The beam structures are arranged layer by layer below the jacking position, the horizontal projection connecting line of each layer of beam structures is an isosceles trapezoid, comprising two main beams (23) and two secondary beams (24), the main beams (23) are symmetrically fixedly connected between the inner structure columns (21) and the outer structure columns (22), the secondary beams (24) are fixedly connected between the inner structure columns (21) and the outer structure columns (22) respectively, The frame supports (25) are fixedly connected between the main beams (23), the inner structure columns (21) and / or the outer structure columns (22) of each layer, the operation platform plates are laid on the beam structures, and the protection structures are enclosed around the operation platform plates.

5. The construction method of non-disassembly jacking repair of multi-layer wood structure building load-bearing wood members according to claim 4, characterized in that: The load-bearing wood component includes wood columns (6), and a jacking position is arranged at the top of each layer of wood columns (6), and the jacking force transmission steel component includes a clamping hoop type jacking frame (7), the clamping hoop type jacking frame includes two split clamping hoops, each clamping hoop includes a semicircular hoop piece (71) and a jacking steel beam (72), the jacking steel beam (72) is fixedly connected horizontally at the center of the outer wall of the hoop piece (71), the end of the hoop piece (71) is provided with a hoop piece lug plate (73), and the two hoop pieces (71) are fixedly connected into a hoop ring through a connecting bolt (10) between the hoop piece lug plates (73), the hoop ring is surrounded outside the wood column (6), and the upper gap between the hoop ring and the wood column (6) is tightly plugged through a wedge-shaped steel clamping piece (8), the wedge-shaped steel clamping piece (8) is a solid piece or a hollow piece, and includes an outer wall plate (81) and an inner wall plate (82), the inner wall plate (81) is provided with horizontal anti-skid steel ribs (84), and when the wedge-shaped steel clamping piece (8) is a hollow piece, the wedge-shaped steel clamping piece (8) further includes a clamping piece stiffening plate (83) fixedly connected between the outer wall plate (81) and the inner wall plate (82); The jacking steel beam (72) is arranged in a spatial intersection manner below the adjacent main beam (23), and the jacking device (4) is arranged between the jacking steel beam (72) and the main beam (23); the two jacking devices (4) of each clamping hoop type jacking frame (7) are arranged in a left-right symmetrical manner.

6. The construction method of non-disassembly jacking repair of multi-layer wood structure building load-bearing wood members according to claim 5, characterized in that: The force transmission unloading operation steel frame (1) further includes a wood column horizontal constraint hoop (9), the wood column horizontal constraint hoop (9) includes two split semicircular limiting hoops, the end of each limiting hoop is provided with a limiting lug plate (91), and the two limiting hoops are fixedly connected into a limiting ring through a connecting bolt (10) between the limiting lug plates (91), the limiting ring is surrounded outside the wood column (6) and leaves a gap with the wood column (6), the outer wall of the limiting ring is provided with a pull connection lug plate (92) in the direction of each column structure, and an anti-lateral force pull connection rod (93) is arranged between each pull connection lug plate (92) and the inner side of each corresponding column structure.

7. The construction method of non-disassembly jacking repair of multi-layer wood structure building load-bearing wood members according to claim 5, characterized in that: The jacking device (4) is a jack, and the top surface of the main beam (23) is provided with a jack clamping plate (20), the jack clamping plate includes two split clamping pieces, each clamping piece includes a connecting part (201) and a clamping part (202), the connecting part (201) is fixedly connected with the edge of the main beam (23), the clamping part (202) is a vertical C-shaped limiting plate perpendicular to the connecting part (201), and the two vertical C-shaped limiting plates are non-connected to form a clamping groove, the inner diameter of the clamping groove is adapted to the size of the jack, and the bottom of the jack is seated in the clamping groove.

8. The construction method of non-disassembly jacking repair of multi-layer wood structure building load-bearing wood members according to claim 5, characterized in that: The load-bearing wood component includes a bracket arch (30), and a jacking position is arranged at the bottom of the bracket arch (30), and the jacking force transmission steel component includes a bracket arch bracket (40), the bracket arch bracket (40) includes two split half brackets, the two half brackets are surrounded to form a bracket ring, the bracket ring has a C-shaped cross section, and includes an inner wall ring plate (41), an upper flange ring plate (42) and a lower flange ring plate (43), the inner diameter of the inner wall ring plate (41) is adapted to the diagonal line size of the bracket arch (30), the inner wall ring plate (41) surrounds the bracket arch (30) and is clamped around the bracket arch (30), and the top surface of the upper flange ring plate (42) is tightly attached to the lower surface of the lowermost layer of wood components of the bracket arch (30).

9. The construction method of non-disassembly jacking repair of multi-layer wood structure building load-bearing wood members according to claim 8, characterized in that: A stiffening plate (44) is provided in the groove formed between the inner wall ring plate (41), the upper flange ring plate (42) and the lower flange ring plate (43). The two half-frames are symmetrically connected at their end connection positions. The extended steel beam (45) is a channel steel, including a web plate (451), a top plate (452) and a bottom plate (453). The web plate (451) is perpendicular to the inner wall ring plate (41). The inner end of the extended steel beam (45) is fixedly connected to the inner wall ring plate (41). The upper flange ring plate (42) is widened at the connection end, flush with the top plate (452) and fixedly connected. The lower flange ring plate (43) is widened at the connection end, flush with the bottom plate (453) and fixedly connected. The web plates (451) of the adjacent extended steel beams (45) on the same side are tightly attached and fixedly connected by connecting bolts (10).

10. The construction method for non-disassembly jacking up and repairing load-bearing wooden components of multi-story timber-framed buildings according to claim 9, characterized in that: When the bracket (30) is lifted, a lifting device is installed at the bottom of the bracket bracket (40) to lift it or the bracket bracket (40) is pulled up to lift it. When the lower-level bracket (30) to be lifted is combined with the wooden column (6) to be lifted in this layer, the clamp-type lifting frame (7) and the bracket bracket (40) are connected and tightened together by the chain hoist (50) to bear the force. The top of the chain hoist (50) is connected to the lifting ring (60) set on the hoist ring, and the bottom of the chain hoist (50) is wrapped around the support ring set at the corresponding position on the hoist ring, or the bottom of the chain hoist (50) is connected to the lifting hole (70) set at the corresponding position on the support ring stiffening plate (44).

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