Construction method for disassembling and preserving a shikumen

Abstract

The application discloses a construction method for disassembling, storing and protecting a Shikumen, and belongs to the field of repairing of historical protective buildings. The construction method specifically comprises the following steps: firstly, assembling frame bodies on both sides of the Shikumen; secondly, constructing a bottom beam and a covering structure; thirdly, installing the frame bodies on both sides of the Shikumen and diagonal braces; fourthly, installing a top beam, an inner frame bottom frame, an inner frame scissor brace and a tie rod; fifthly, cutting a wall body and installing an edge sealing rod; and finally, hoisting, transporting and storing. The construction method can protect the Shikumen as a whole during disassembling, transporting and storing of the Shikumen. The covering structure, the bottom beam, the frame body, the inner frame scissor brace, the inner frame bottom frame, the tie rod, the diagonal brace, the edge sealing rod, the adjustable supporting leg and the top beam used in the construction can be quickly installed and disassembled, so that the safety hidden danger caused by welding work is avoided, and the components can be recycled. The Shikumen is limited by flexible supporting legs, so that hard contact damage to a wall surface is avoided.

Description

Technical Field

[0001] This invention relates to a construction method for dismantling and preserving Shikumen (stone gate) structures, belonging to the field of historical building restoration. Background Technology

[0002] Shikumen, or stone gate houses, are the most representative residential buildings in Shanghai and are often considered a symbol of the city's modern urban civilization. As their most iconic visual feature, shikumen components are frequently preserved and reused during the renovation and protection of traditional neighborhoods. Due to the inherent material properties and structural composition of shikumen, cracking and deformation are possible during disassembly and transportation. Therefore, protection is necessary during unloading, transport, and storage. Currently, steel is cut on-site and steel frames are welded to limit and support the shikumen, ensuring stability during transport. While this method protects the shikumen during transport, the welded steel frames cannot be reused, making it uneconomical; welding during disassembly poses safety hazards; and on-site frame installation is haphazard and unregulated. Summary of the Invention

[0003] To address the problems existing in the disassembly, transportation, and storage of Shikumen (stone gate) structures using welded steel frames for protection, this invention provides a construction method for disassembling and preserving Shikumen structures. Each component can be quickly assembled, disassembled, and reused, reducing construction costs and improving construction efficiency.

[0004] To solve the above technical problems, the present invention includes the following technical solutions:

[0005] A construction method for dismantling and preserving a Shikumen (stone gate) includes the following steps:

[0006] According to the dimensions of the Shikumen (stone gate) on site, the frame structure on both sides of the Shikumen is assembled. The frame structure includes two inner frame side columns, one inner frame connector, two outer frame side columns, and several outer frame connecting beams. The two inner frame side columns are arranged in parallel and spaced apart and connected as one unit by the inner frame connector. The two outer frame side columns are arranged in parallel and spaced apart and connected as one unit by the outer frame connecting beams. The inner frame side columns and the outer frame side columns are fixedly connected by fasteners. Adjustable support legs are provided on the side of the frame structure facing the Shikumen.

[0007] Excavate the foundation below the walls on both sides of the Shikumen door opening, then place the bottom beam with both ends extending from the front and rear sides of the Shikumen. Install the edging structure at the bottom of the Shikumen, adjust the height of the bottom beam to make the bottom beam support the Shikumen tightly, and bolt the edging structure to the bottom beam.

[0008] Install one frame structure on each side of the Shikumen gate. The inner and outer frame side columns are bolted to the bottom beam. Install diagonal braces. The top of the diagonal braces is connected to the inner frame side column, and the bottom is supported on the foundation surface.

[0009] A top beam is installed on the top of the Shikumen, spanning the top of the Shikumen and bolted to the top of the outer frame side columns at both ends. Tie rods are installed on the top of the inner frame side columns to connect the frame structures on both sides of the Shikumen into one unit.

[0010] Install the inner frame base and inner frame scissor bracing. The inner frame base is equipped with four connecting ends, which are bolted to the four inner frame side columns respectively. The inner frame scissor bracing is supported inside the door opening of the Shikumen.

[0011] Tie rods are installed at the top, bottom, and door opening of the Shikumen. The tie rods are used to tie the tie rods on both sides of the Shikumen, thereby tying the frame on both sides of the Shikumen and making the adjustable support legs hold the Shikumen tight.

[0012] Cut the walls at both ends of the Shikumen, remove the excess wall, level and reinforce the ends of the walls with concrete, and install the edge sealing rods on both sides after curing.

[0013] Remove the diagonal bracing, hoist and transport the equipment, and reinstall the diagonal bracing during storage after transportation.

[0014] Furthermore, the inner frame side columns include the main steel structure frame, bottom beam mounting plate one, tie rods, inner frame connector mounting plate, bottom frame mounting plate, and diagonal brace mounting ear plate; the bottom beam mounting plate one is set at the bottom of the main steel structure frame, and tie rods are set at the top and left and right sides of the main steel structure frame.

[0015] Furthermore, the inner frame connector is used to connect the two inner frame side columns of the frame body into one unit. The inner frame connector located at the lintel adopts an inner frame middle plate structure, including a steel structure main body, several inner frame side column mounting plates set on the left and right sides of the steel structure main body, and several tie rods set on the upper and lower sides of the steel structure main body. The inner frame side column mounting plates are used to bolt to the inner frame connector mounting plates; the tie rods are used to set tie rods to tie the two inner frame connectors at the front and rear of the Shikumen together; the inner frame connector is provided with adjustable support feet facing inward.

[0016] Furthermore, the external scaffolding connecting beams are sleeved steel pipe structures, allowing for length adjustment. External scaffolding scissor bracing is installed between two adjacent external scaffolding connecting beams located at the lintel. The external scaffolding scissor bracing is connected to the inner scaffolding middle section structure using a torsion-resistant double clamp. The torsion-resistant double clamp includes a first clamp, a second clamp, and a pivot. The first clamp includes two Z-shaped plates, each with bolt holes at its ends connected by a first bolt. The second clamp includes a connecting plate and a Z-shaped plate, with bolt holes at the ends of the Z-shaped plate corresponding to those of the connecting plate, connected by a second bolt. The connecting plate is rotatably connected to one of the Z-shaped plates via a pivot.

[0017] Furthermore, the bottom of the outer frame side columns is equipped with a bottom beam mounting plate, the top is equipped with a top beam mounting plate, and the sides are equipped with several connecting crossbeam mounting plates.

[0018] The ends of the connecting beams of the external scaffold are equipped with external scaffold side column mounting plates, which are matched with the mounting plates of the connecting beams of the external scaffold.

[0019] Furthermore, the external scaffolding connecting beam is a sleeved steel pipe structure that can achieve length adjustment. The external scaffolding connecting beam includes a first beam and a second beam. The end of the second beam is provided with a sliding sleeve, which is sleeved on the side column of the external scaffolding and can slide up and down along the side column of the external scaffolding and brake. Connecting ear plates are provided below the end of the first beam and above the end of the second beam.

[0020] An external scaffold scissor brace is provided between the first and second crossbeams. The four ends of the external scaffold scissor brace are respectively hinged to four connecting lugs. The external scaffold scissor brace includes a first member and a second member. The first member has a through hole in the middle. The second member passes through the through hole of the first member and is hinged to the first member at the through hole. The second member can rotate in the first member. When the external scaffold scissor brace is opened and closed, the sleeve slides up and down along the external scaffold side column, and the length of the external scaffold connecting crossbeam is adjusted accordingly, thereby adjusting the distance between the two external scaffold side columns.

[0021] Furthermore, the adjustable support foot includes an outer frame, a threaded sleeve, a lead screw, a nut, and a flexible support foot;

[0022] The outer frame is provided with a horizontal through hole, and a threaded sleeve is provided in the horizontal through hole. A screw rod is provided in the threaded sleeve. Both ends of the screw rod extend out of the outer frame. One end of the screw rod is provided with a flexible support foot, and the other end is provided with a nut. The screw rod is rotatably connected to the back of the flexible support foot. When the screw rod rotates, it can be screwed in or out along the threaded sleeve, thereby adjusting the distance between the flexible support foot and the Shikumen door.

[0023] Furthermore, the adjustable support foot also includes a control box, a motor, and a pressure sensor; the control box can control the motor to rotate and drive the lead screw to rotate, the pressure sensor is set on the side of the flexible support foot facing the Shikumen, the pressure sensor transmits the detected pressure value to the control box, the control box controls the motor to rotate according to the set pressure threshold, and when the pressure value reaches the set pressure threshold, the motor stops rotating;

[0024] Specifically, to ensure the adjustable support feet tighten the shikumen door, the control box controls the motor to rotate, and when the pressure value fed back by the pressure sensor reaches the preset value, the motor stops rotating.

[0025] Furthermore, the adjustable support foot includes a support, a hydraulic telescopic device, a control box, a pressure sensor, and a flexible support foot; the control box controls the extension and retraction of the hydraulic telescopic device, the telescopic end of the hydraulic telescopic device is connected to the back of the flexible support foot, and the other end is connected to the support, the support is fixedly connected to the inner frame side column or inner frame connector; the pressure sensor is set on the side of the flexible support foot facing the Shikumen, the pressure sensor transmits the detected pressure value to the control box, the control box controls the extension and retraction of the hydraulic telescopic device according to the set pressure threshold, and when the pressure value reaches the set pressure threshold, the hydraulic telescopic device is locked in place.

[0026] Specifically, to tighten the adjustable support legs of the Shikumen door, the hydraulic telescopic device is extended by controlling the control box. When the pressure value fed back by the pressure sensor reaches the preset value, the length of the hydraulic telescopic device remains unchanged.

[0027] Furthermore, the flexible support leg is an airbag, and a pressure sensor is set inside the airbag to measure the air pressure inside the airbag. The airbag is connected to an air pump, and a distance measuring instrument is set on the adjustable support leg to measure the distance between the adjustable support leg and the Shikumen.

[0028] The control box collects distance data from the rangefinder and air pressure data from the pressure sensor. When the distance data reaches the set value, the air pump is inflated; when the air pressure data reaches the set threshold, the air pump is stopped.

[0029] Compared with existing technologies, this invention, by adopting the above technical solutions, has the following advantages and positive effects: The construction method for dismantling and preserving Shikumen provided by this invention can provide overall protection for Shikumen during dismantling, transportation, and storage; the edging structure, bottom beam, frame, inner frame scissor brace, inner frame base, tie rod, diagonal brace, edge sealing rod, adjustable support feet, top beam, etc. used in construction can be quickly installed and dismantled, avoiding safety hazards caused by welding work, and all components can be recycled; the flexible support feet limit the distance between the inner frame and the wall, avoiding hard contact that could damage the wall surface, and the flexible support feet can also effectively protect the lintel, stone hoops, door frame, etc. Attached Figure Description

[0030] Figure 1 This is a structural diagram of a Shikumen (stone gate house).

[0031] Figure 2 This is a schematic diagram of the structure of a frame provided in an embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of the structure of the inner frame side column provided in an embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of the structure of the inner frame middle piece provided in an embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of an external frame column, an external frame connecting beam, and an external frame scissor brace provided in an embodiment of the present invention;

[0035] Figure 6 This is a schematic diagram of the installation of the bottom beam and the edge-sealing structure according to an embodiment of the present invention;

[0036] Figure 7 This is a schematic diagram of the structure of the bottom beam provided in an embodiment of the present invention;

[0037] Figure 8 This is a schematic diagram of the installation of the frame and diagonal brace provided in an embodiment of the present invention;

[0038] Figure 9 This is a schematic diagram of the installation of the top beam according to an embodiment of the present invention;

[0039] Figure 10 This is a schematic diagram of the structure of a top beam provided in an embodiment of the present invention;

[0040] Figure 11 This is a schematic diagram of the installation of the inner frame scissor brace and the inner frame base frame according to an embodiment of the present invention;

[0041] Figure 12 This is a schematic diagram of the structure of the inner frame base provided in an embodiment of the present invention;

[0042] Figure 13 This is a schematic diagram of the internal frame scissor brace provided in an embodiment of the present invention;

[0043] Figure 14 This is a structural schematic diagram of an edge-sealing component provided in an embodiment of the present invention;

[0044] Figure 15 This is a schematic diagram of the structure of a torsionable double clamp provided in an embodiment of the present invention;

[0045] Figure 16 This is a schematic diagram of the structure of a torsionable double clamp provided in an embodiment of the present invention from another perspective.

[0046] Figure 17 for Figure 16 Sectional view along AA;

[0047] Figure 18 This is a schematic diagram of the adjustable support leg provided in an embodiment of the present invention;

[0048] Figure 19 for Figure 17 A sectional view along the middle edge BB;

[0049] Figure 20 This is a schematic diagram of the adjustable support legs.

[0050] The numbers in the diagram are as follows:

[0051] 1-Door opening; 2-Wall; 3-Threshold stone; 4-Door frame; 5-Stone hoop; 6-Tibial lintel;

[0052] 10-Edge binding structure;

[0053] 20-Bottom beam; 21-Main steel structure; 22-Support beam; 23-First stud; 24-Second stud; 25-Height-adjustable support;

[0054] 30-Frame structure; 31-Internal frame side column; 311-Main steel frame structure; 312-Bottom beam mounting plate one; 313-Tie rod; 314-Internal frame connector mounting plate; 315-Bottom frame mounting plate; 316-Diagonal brace mounting lug; 32-Internal frame connector; 321-Main steel structure; 322-Internal frame side column mounting plate; 323-Tie rod; 33-External frame side column; 331-Bottom beam mounting plate two; 332-Top beam mounting plate; 333-Connecting crossbeam mounting plate; 34-External frame connecting crossbeam; 341-First crossbeam; 342-Second crossbeam; 343-Sliding sleeve; 35-External frame scissor brace; 351-First member; 352-Second member;

[0055] 40-Inner frame scissor brace; 401-X-shaped component; 402-Horizontal bar; 403-Vertical bar; 41-Inner frame base; 411-Connecting end; 412-Tie rod; 42-Tie rod; 43-Diagonal brace; 44-Edge sealing rod;

[0056] 50 - Adjustable support leg; 51 - Outer frame body; 52 - Threaded sleeve; 53 - Lead screw; 54 - Nut; 55 - Flexible support leg; 56 - Control box; 57 - Pressure sensor;

[0057] 60-Top beam; 61-Main body of top beam; 62-External scaffold side column connector; 63-Lifting lug;

[0058] 70 - Torsible double clamp; 71 - First clamp; 711 - Z-shaped plate one; 712 - First bolt; 72 - Second clamp; 721 - Connecting plate; 722 - Z-shaped plate two; 723 - Second bolt; 73 - Rotating shaft. Detailed Implementation

[0059] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a construction method for dismantling and preserving a Shikumen (stone gate) according to the present invention. The advantages and features of the present invention will become clearer from the following description. It should be noted that the accompanying drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0060] This embodiment provides a construction method for dismantling and preserving Shikumen (stone-framed gate) structures, which can support and protect the Shikumen during dismantling, transportation, and storage. For example... Figure 1 As shown, a Shikumen includes a wall 2, a doorway 1 set on the wall 2, a threshold stone 3 set below the doorway 1, a stone hoop 5 set above the doorway 1, a lintel 6 set above the stone hoop 5, and door frames 4 set on both sides of the doorway.

[0061] The construction method for dismantling and preserving a Shikumen (stone gate) provided in this embodiment includes the following steps:

[0062] Step 1, such as Figure 2 As shown, the frame 30 on both sides of the Shikumen is assembled in the factory according to the dimensions of the Shikumen on site. The frame 30 includes two inner frame side columns 31, one inner frame connector 32, two outer frame side columns 33, and several outer frame connecting beams 34. The two inner frame side columns 31 are arranged in parallel and spaced apart and connected as one unit by the inner frame connector 32. The two outer frame side columns 33 are arranged in parallel and spaced apart and connected as one unit by the outer frame connecting beams 34. The inner frame side columns 31 and the outer frame side columns 33 are fixedly connected by fasteners, which can be bolts or connecting rods. The frame 30 is provided with adjustable support legs 50 on the side facing the Shikumen.

[0063] Combination Figure 2 and Figure 3 As shown, the function of the inner frame side column 31 is to protect the door frame of the Shikumen, including the steel structure frame main body 311, bottom beam mounting plate 312, tie rod 313, inner frame connector mounting plate 314, base frame mounting plate 315, and diagonal brace mounting ear plate 316. The steel structure frame main body 311 is a truss structure, including two vertical members, which are located on the left and right sides of the door frame during installation. It also includes horizontal and diagonal members to reinforce the two vertical members. The bottom beam mounting plate 312 is set at the bottom of the steel structure frame main body 311, which is used to connect with the bottom beam 20 by bolts. Tie rods 313 are set at the top and left and right sides of the steel structure frame main body 311. The tie rods 313 are used to set tie rods to tie the two steel structure frame main bodies of the Shikumen together. The inner frame connector 32 mounting plate is used to connect with the inner frame connector 32 by bolts. The base frame mounting plate is used to install the base frame, and the diagonal brace mounting ear plate is used to install the diagonal brace.

[0064] The inner frame connector 32 is used to connect the two inner frame side columns 31 of the frame structure into one unit. The inner frame connector 32 can be several connecting rods, and the two ends of the connecting rods are respectively fixedly connected to the inner frame connector mounting plate. As an example, combined with Figures 2 to 4As shown, the inner frame connector 32 located at the lintel adopts an inner frame middle panel structure, including a steel structure main body 321, several inner frame side column mounting plates 322 set on the left and right sides of the steel structure main body 321, and several tie rods 323 set on the upper and lower sides of the steel structure main body 321. The inner frame side column mounting plates 322 are used to bolt to the inner frame connector mounting plates 314, and the tie rods are used to set tie rods to tie the two inner frame middle panel structures of the front and rear of the Shikumen together. The inner frame connector 32 is provided with adjustable support legs 50 facing inward. The length of the adjustable support legs 50 is adjustable, and they support the Shikumen and protect the lintel.

[0065] Combination Figure 2 and Figure 5 As shown, the external scaffolding side columns 33 are used during the hoisting and transportation of the Shikumen (stone gate) to provide load-bearing support. For example, the external scaffolding side columns 33 adopt a steel structure, such as a channel steel with two open ends facing each other, a bottom beam mounting plate 331 at the bottom, a top beam mounting plate 332 at the top, and several connecting crossbeam mounting plates 333 on the side.

[0066] The external scaffold connecting beam 34 is a steel pipe structure with an external scaffold side column mounting plate at its end, which matches the connecting beam mounting plate. In a preferred embodiment, the external scaffold connecting beam is a sleeved steel pipe structure, allowing for length adjustment. The external scaffold connecting beam includes a first beam 341 and a second beam 342. A sliding sleeve 343 is provided at the end of the second beam, fitting onto the external scaffold side column 33 and sliding up and down along it, while also being braked. Connecting lugs are correspondingly provided below the external scaffold side column mounting plate at the end of the first beam 341 and above the external scaffold side column mounting plate at the end of the second beam. An external scaffold scissor brace 35 is provided between the first and second beams, with its four ends hinged to four connecting lugs. The external scaffold scissor brace 35 includes a first member 351 and a second member 352. The first member 351 has a through hole in its middle. The second member 352 passes through the through hole of the first member 351 and is hinged to the first member at the through hole. The second member can rotate within the first member. When the external scaffold scissor brace 35 opens and closes, the sliding sleeve 343 slides up and down along the external scaffold side post 33, and the length of the external scaffold connecting beam is adjusted accordingly, thereby adjusting the distance between the two external scaffold side posts 33. Therefore, by setting an adjustable-length external scaffold connecting beam, a sliding sleeve 343 that can slide up and down, and a rotatable external scaffold scissor brace 35, the width between the two external scaffold side posts 33 can be adjusted to match the width of the Shikumen door.

[0067] Step Two, as follows Figure 6As shown, the foundation below the walls on both sides of the Shikumen door opening 1 is excavated, and then the bottom beam 20 is placed. The two ends of the bottom beam 20 extend from the front and rear sides of the Shikumen. The edging structure 10 is installed at the bottom of the Shikumen. The height of the bottom beam 20 is adjusted so that the bottom beam 20 supports the Shikumen tightly, and the edging structure 10 is bolted to the bottom beam 20.

[0068] Combination Figure 2 , Figure 6 and Figure 7 As shown, the bottom beam 20 provides mounting positions for the inner frame side columns 31 and the outer frame side columns 33, supporting the Shikumen door during hoisting. The bottom beam 20 includes a main steel structure 21, a support beam 22, height-adjustable supports 25, a first stud 23, and a second stud 24. The main steel structure 21 includes an I-beam and panels installed on the upper and lower surfaces of the I-beam. The height-adjustable supports 25 are located at the four corners of the bottom beam 20. When the foundation is excavated or uneven, the flatness of the bottom beam 20 can be adjusted using the height-adjustable supports 25. To facilitate the placement of the main steel structure 21 below the wall, the height of the excavated foundation is higher than the height of the bottom beam 20. Support beams 22 are installed on the main steel structure 21 to support the bottom of the Shikumen door. The height-adjustable supports 25 can be adjusted by threads, hydraulically, or electrically. The first stud 23 and the second stud 24 are used to connect to the bottom beam mounting plate 312 and the bottom beam mounting plate 331, respectively. The edging structure 10 is made of multiple sections of angle steel welded together, and the shape of the welded angle steel is consistent with the outer surface of the bottom side of the Shikumen.

[0069] Step 3, Combining Figures 2 to 8 As shown, a frame 30 is installed on each side of the Shikumen gate. The inner frame side column 31 and the outer frame side column 33 are bolted to the bottom beam 20. Diagonal braces 43 are installed. The top of the diagonal braces 43 is hinged to the inner frame side column 31, and the bottom is supported on the foundation surface.

[0070] Step 4: Combining Figures 2 to 9 As shown, a top beam 60 is installed on the top of the Shikumen, which spans across the top of the Shikumen and is bolted to the top of the outer frame side column 33 at both ends. Tie rods 42 are installed on the top of the inner frame side column 31, so that the frame 30 on both sides of the Shikumen is connected as one.

[0071] Combination Figure 9 and Figure 10 As shown, the top beam 60 includes a top beam body 61, a side column connector 62 located at the bottom of the top beam body 61, and a lifting lug 63 located at the top of the top beam body. The side column connector 62 is bolted to the top beam mounting plate 332 of the external scaffold side column 33. During the hoisting of the Shikumen (stone gate), the lifting lug 63 provides lifting points for the top beam 60. As an example, the side column connector 62 is a stud. Studs are provided at the four corners of the bottom of the top beam 60, corresponding to the bolt holes of the top beam mounting plate 332. The studs pass through the connecting plate and are fixed by nuts.

[0072] Step 5, Combining Figures 11 to 13 As shown, an inner frame base 41 and an inner frame scissor brace 40 are installed. The inner frame base 41 is provided with four connecting ends 411, which are bolted to the four inner frame side columns respectively. The inner frame scissor brace 40 is supported in the doorway of the Shikumen. The four inner frame side columns 31, several inner frame connectors 32, one inner frame base 41, and one inner frame scissor brace 40 together constitute the inner frame body.

[0073] Combination Figure 11 and Figure 12 As shown, the inner frame base 41 includes two spaced-apart horizontal bars and a vertical bar connecting the two horizontal bars. Each horizontal bar has a connecting end 411 at both ends, with bolt holes on the connecting end 411 for bolting to the mounting plate on the inner frame side column. A tie rod 412 is provided at the bottom of the inner frame base 41 for securing it. The function of the inner frame base 41 is to protect the threshold stone at the bottom of the doorway and to connect the left and right inner frame side columns 31 together, improving the overall rigidity of the inner frame.

[0074] Combination Figure 11 and Figure 13 As shown, the function of the inner frame scissor brace 40 is to provide support at the doorway. The inner frame scissor brace 40 includes an X-shaped member 401, a horizontal bar 402 set at the top of the X-shaped member 401, a vertical bar 403 set on the horizontal bar 402, and adjustable support feet 50 set at the bottom and sides of the X-shaped member 401 and at both ends of the horizontal bar 402. The vertical bar 403 is used to connect the inner frame connectors 32 on both sides of the Shikumen door into a whole at the doorway, and the adjustable support feet 50 are used for tightening and supporting.

[0075] Step Six, as Figure 14 As shown, tie rods 42 are installed at the top, bottom and door opening of the Shikumen. The tie rods are used to tie the tie rods on both sides of the Shikumen, and tie the frame on both sides of the Shikumen, so that the adjustable support feet 50 can tighten the Shikumen.

[0076] Step 7: Cut the walls at both ends of the Shikumen door, remove excess wall material, level and reinforce the ends of the walls with concrete, and install the edge sealing rods on both sides of the Shikumen door after curing. The two ends of the edge sealing rods are connected to the tie rods with nuts. The edge sealing rods can have the same structure as the tie rods.

[0077] Step 8: Remove the diagonal brace 43 and proceed with hoisting and transportation. After transportation, reinstall the diagonal brace 43 to ensure stability during storage. During storage, the external scaffold side columns 33, external scaffold connecting beams 34, and external scaffold scissor braces 35 can be removed for future use.

[0078] In one specific embodiment, such as Figure 14 As shown, the inner frame middle section structure and the outer frame scissor brace 35 are connected by a torsionable double clamp 70, combined with... Figures 14 to 17 As shown, the torsionable double clamp 70 includes a first clamp 71, a second clamp 72, and a rotating shaft 73. The first clamp 71 includes two U-shaped plates 711, the ends of which are provided with bolt holes and connected by a first bolt 712. The second clamp 72 includes a connecting plate 721 and a U-shaped plate 722, the ends of which are provided with bolt holes corresponding to those of the connecting plate 721 and connected by a second bolt 723. The connecting plate 721 and one of the U-shaped plates 711 are rotatably connected via the rotating shaft 73. The torsionable double clamp 70 remains usable even when the external scaffold scissor brace angle 35 is adjusted.

[0079] In one specific embodiment, as an example, combined with Figure 18 and Figure 19 As shown, the adjustable support leg 50 includes an outer frame body 51, a threaded sleeve 52, a lead screw 53, a nut 54, and a flexible support leg 55. The outer frame body 51 has a horizontal through hole, within which the threaded sleeve 52 is installed. The lead screw 53 is installed inside the threaded sleeve 52, with both ends extending out of the outer frame body 51. One end of the lead screw 53 has a flexible support leg 55 attached, and the other end has a nut 54. The nut 54 secures the adjustable support leg 50 to the inner frame body. The lead screw 53 is rotatably connected to the flexible support leg 55 at its back. When the lead screw 53 rotates, it screws in and out along the threaded sleeve 52, adjusting the distance between the flexible support leg 55 and the stone gate.

[0080] Furthermore, such as Figure 19 As shown, the adjustable support leg 50 also includes a control box 56, a motor (not shown), and a pressure sensor 57. The control box 56 can control the motor to rotate and drive the lead screw 53 to rotate. The pressure sensor 57 is located on the side of the flexible support leg 55 facing the Shikumen. The pressure sensor 57 transmits the detected pressure value to the control box 56. The control box 56 controls the motor to rotate according to the set pressure threshold. When the pressure value reaches the set pressure threshold, the motor stops rotating.

[0081] In another embodiment, the adjustable support leg 50 includes a support, a hydraulic telescopic device, a control box, a pressure sensor, and a flexible support leg. The control box controls the extension and retraction of the hydraulic telescopic device. The telescopic end of the hydraulic telescopic device is connected to the back of the flexible support leg, and the other end is connected to the support. The support is fixedly connected to the inner frame. The pressure sensor is located on the side of the flexible support leg facing the Shikumen door. The pressure sensor transmits the detected pressure value to the control box. The control box controls the extension and retraction of the hydraulic telescopic device according to a set pressure threshold. When the pressure value reaches the set pressure threshold, the hydraulic telescopic device is locked in place.

[0082] For example, the flexible support leg 55 can be a rubber pad, suction cup, etc. In another embodiment, the flexible support leg 55 is an airbag, and the pressure sensor 57 is disposed inside the airbag. The airbag can fit well with the shape of the lintel 6, door frame 4, stone hoop 5, etc., avoiding damage to the outer surface of the components. Furthermore, the airbag is connected to an air pump, and a distance measuring instrument is provided on the adjustable support leg 50. The distance measuring instrument is used to detect the distance between the adjustable support leg 50 and the stone gate. When the set value is reached, the air pump inflates; when the air pressure reaches the set threshold, inflation stops.

[0083] In one specific embodiment, a track is provided on the inner or outer side column of the frame structure, and a movable base is mounted on the track. A cutting device is mounted on the movable base, which drives the cutting device to move up and down along the track to cut the doorway structure. The cutting device can be a chain-type cutter or a cutting needle. An image acquisition device can be installed on the cutting device or the movable base to acquire images of the cutting position, thereby identifying whether the cutting position deviates from a predetermined position. The movable base and the track can be connected by gear meshing, with the movable base moving by a motor controlling the gear rotation. Alternatively, a locking wheel can be used to engage the movable base on the track, with the movable base moving up and down by a motor controlling the rotation of the locking wheel. The method of moving the movable base can be achieved using existing technology, and its specific structure and working principle will not be elaborated further.

[0084] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0085] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A construction method for dismantling and preserving a Shikumen (stone gate) structure, characterized in that, Includes the following steps: According to the dimensions of the Shikumen (stone gate) on site, the frame structure on both sides of the Shikumen is assembled. The frame structure includes two inner frame side columns, one inner frame connector, two outer frame side columns, and several outer frame connecting beams. The two inner frame side columns are arranged in parallel and spaced apart and connected as one unit by the inner frame connector. The two outer frame side columns are arranged in parallel and spaced apart and connected as one unit by the outer frame connecting beams. The inner frame side columns and the outer frame side columns are fixedly connected by fasteners. Adjustable support legs are provided on the side of the frame structure facing the Shikumen. Excavate the foundation below the walls on both sides of the Shikumen door opening, then place the bottom beam with both ends extending from the front and rear sides of the Shikumen. Install the edging structure at the bottom of the Shikumen, adjust the height of the bottom beam to make the bottom beam support the Shikumen tightly, and bolt the edging structure to the bottom beam. A frame structure is installed on each side of the Shikumen gate. The inner and outer frame side columns are bolted to the bottom beam. Diagonal braces are installed, with the top of the diagonal braces connected to the inner frame side columns and the bottom supported on the foundation surface. A top beam is installed on the top of the Shikumen, spanning the top of the Shikumen and bolted to the top of the outer frame side columns at both ends. Tie rods are installed on the top of the inner frame side columns to connect the frame structures on both sides of the Shikumen into one unit. Install the inner frame base and inner frame scissor bracing. The inner frame base is equipped with four connecting ends, which are bolted to the four inner frame side columns respectively. The inner frame scissor bracing is supported inside the door opening of the Shikumen. Tie rods are installed at the top, bottom, and door opening of the Shikumen. The tie rods are used to tie the tie rods on both sides of the Shikumen, thereby tying the frame on both sides of the Shikumen and making the adjustable support legs hold the Shikumen tight. Cut the walls at both ends of the Shikumen, remove the excess wall, level and reinforce the ends of the walls with concrete, and install the edge sealing rods on both sides after curing. Remove the diagonal bracing, hoist and transport the equipment, and reinstall the diagonal bracing during storage after transportation. The inner frame side columns include the main steel frame, bottom beam mounting plate 1, tie rods, inner frame connector mounting plate, bottom frame mounting plate, and diagonal brace mounting ear plate; the bottom beam mounting plate 1 is set at the bottom of the main steel frame, and tie rods are set at the top and left and right sides of the main steel frame; The inner frame connector is used to connect the two inner frame side columns of the frame body into one unit. The inner frame connector located at the lintel adopts an inner frame middle plate structure, including a steel structure main body, several inner frame side column mounting plates set on the left and right sides of the steel structure main body, and several tie rods set on the upper and lower sides of the steel structure main body. The inner frame side column mounting plates are used to bolt to the inner frame connector mounting plates; the tie rods are used to set tie rods to tie the two inner frame connectors at the front and rear of the Shikumen together; the inner frame connector is provided with adjustable support feet facing inward. The external scaffolding connecting beams are sleeved steel pipe structures, allowing for length adjustment. External scaffolding scissor braces are installed between two adjacent external scaffolding connecting beams located at the lintel. The external scaffolding scissor braces are connected to the inner scaffolding middle section structure using a torsion-resistant double clamp. The torsion-resistant double clamp includes a first clamp, a second clamp, and a pivot. The first clamp includes two Z-shaped plates, each with bolt holes at its ends connected by a first bolt. The second clamp includes a connecting plate and a Z-shaped plate, with bolt holes at the ends of the Z-shaped plate corresponding to the connecting plate, connected by a second bolt. The connecting plate is rotatably connected to one of the Z-shaped plates via a pivot. The bottom of the external frame side columns is equipped with a bottom beam mounting plate, the top is equipped with a top beam mounting plate, and the sides are equipped with several connecting crossbeam mounting plates. The ends of the external scaffolding connecting beams are equipped with external scaffolding side column mounting plates, which are matched with the external scaffolding connecting beam mounting plates; The external scaffolding connecting beam is a sleeved steel pipe structure that can achieve length adjustment. The external scaffolding connecting beam includes a first beam and a second beam. The end of the second beam is provided with a sliding sleeve. The sliding sleeve is sleeved on the side column of the external scaffolding and can slide up and down along the side column of the external scaffolding and brake. Connecting ear plates are provided below the end of the first beam and above the end of the second beam. An external scaffold scissor brace is provided between the first and second crossbeams. The four ends of the external scaffold scissor brace are respectively hinged to four connecting lugs. The external scaffold scissor brace includes a first member and a second member. The first member has a through hole in the middle. The second member passes through the through hole of the first member and is hinged to the first member at the through hole. The second member can rotate in the first member. When the external scaffold scissor brace is opened and closed, the sleeve slides up and down along the external scaffold side column, and the length of the external scaffold connecting crossbeam is adjusted accordingly, thereby adjusting the distance between the two external scaffold side columns.

2. The construction method for dismantling and preserving a Shikumen (stone gate) as described in claim 1, characterized in that, The adjustable support leg includes an outer frame, a threaded sleeve, a lead screw, a nut, and a flexible support leg; A horizontal through hole is provided on the outer frame, a threaded sleeve is provided in the horizontal through hole, a screw is provided in the threaded sleeve, both ends of the screw extend out of the outer frame, a flexible support foot is provided at one end of the screw, and a nut is provided at the other end; The lead screw is rotatably connected to the back of the flexible support foot. When the lead screw rotates, it can be screwed in or out along the threaded sleeve, thereby adjusting the distance between the flexible support foot and the Shikumen door.

3. The construction method for dismantling and preserving a Shikumen (stone gate) as described in claim 2, characterized in that, The adjustable support leg also includes a control box, a motor, and a pressure sensor. The control box can control the motor to rotate and drive the lead screw to rotate. The pressure sensor is set on the side of the flexible support leg facing the Shikumen. The pressure sensor transmits the detected pressure value to the control box. The control box controls the motor to rotate according to the set pressure threshold. When the pressure value reaches the set pressure threshold, the motor stops rotating. Specifically, to ensure the adjustable support feet tighten the shikumen door, the control box controls the motor to rotate, and when the pressure value fed back by the pressure sensor reaches the preset value, the motor stops rotating.

4. The construction method for dismantling and preserving a Shikumen (stone gate) as described in claim 2, characterized in that, The adjustable support foot includes a support, a hydraulic telescopic device, a control box, a pressure sensor, and a flexible support foot. The control box controls the extension and retraction of the hydraulic telescopic device. The telescopic end of the hydraulic telescopic device is connected to the back of the flexible support foot, and the other end is connected to the support. The support is fixedly connected to the inner frame side column or the inner frame connector. The pressure sensor is located on the side of the flexible support foot facing the Shikumen door. The pressure sensor transmits the detected pressure value to the control box. The control box controls the extension and retraction of the hydraulic telescopic device according to the set pressure threshold. When the pressure value reaches the set pressure threshold, the hydraulic telescopic device is locked in place. Specifically, to ensure the adjustable support feet tighten the shikumen, the hydraulic telescopic device is extended via a control box. When the pressure value fed back by the pressure sensor reaches a preset value, the length of the hydraulic telescopic device remains unchanged.

5. The construction method for dismantling and preserving a Shikumen (stone gate) as described in claim 3 or 4, characterized in that, The flexible support legs are airbags, and pressure sensors are installed inside the airbags to measure the air pressure inside the airbags. The airbags are connected to air pumps, and a distance measuring device is installed on the adjustable support legs to measure the distance between the adjustable support legs and the Shikumen (stone gate). The control box collects distance data from the rangefinder and air pressure data from the pressure sensor. When the distance data reaches the set value, the air pump is inflated; when the air pressure data reaches the set threshold, the air pump is stopped.

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