Old house reinforcing structure and reinforcing method thereof

Abstract

The invention discloses an old house reinforcing structure and a reinforcing method thereof, and relates to the technical field of reinforcing structures, the old house reinforcing structure comprises a supporting keel, and the supporting keel comprises a main keel and an auxiliary keel; a clamping plate; a connecting plate; when the supporting columns abut against the connecting plates, the connecting plates abut against the bottoms of the end beams; the supporting column comprises a plurality of supporting plates, and the supporting plates can be turned to the side walls to be in the same end face state. An inserting groove is formed in the top of the supporting plate, an inserting strip slides up and down at the bottom of the clamping plate, and the clamping plate is provided with a driving assembly; when the supporting column abuts against the connecting plate, the driving assembly drives the inserting strip to be separated from the inserting groove. When the supporting plates are turned to the side walls to be in the same end face state and move to the position below the clamping plates, the connecting plates are turned downwards to abut against the supporting plates, and at the moment, the driving assemblies drive the inserting strips to be inserted into the inserting grooves; when the inserting strips are inserted into the inserting grooves, the vertical side walls of the adjacent supporting plates abut against each other and are matched with the supporting keels to form pouring cavities. According to the method, the transformation speed of the old wall can be increased.

Description

Technical Field

[0001] This application relates to the technical field of reinforcement structures, and particularly to a reinforcement structure for old residential buildings and its reinforcement method. Background Art

[0002] With the advancement of urbanization, the old urban areas play an important role in urban development. A large number of old brick-concrete structure residential buildings carry the historical memory of the city. However, limited by the design concepts and technical levels during the construction period, the utilization of their internal spaces is not ideal. Nowadays, with the significant improvement of people's living standards, the demand for the diversification and functionality of living spaces is increasing day by day. These old residential buildings are gradually unable to meet the expectations of residents, and improving the living environment has become an urgent need. Moreover, over time, the brick-concrete structure is constantly aging, further highlighting the necessity of renovation.

[0003] In the past, in the face of the problem of renovating old walls, considering the key factor of the structural safety of the old houses themselves, in order to avoid threatening the overall structural safety of the houses due to direct renovation, the traditional renovation method usually involves knocking down a part of the wall structure first, and then constructing a new wall. After the new wall is put into use, the remaining old walls are renovated, and this cycle is repeated until all the old walls are renovated. This method is a conventional renovation process carried out on the basis of ensuring safety.

[0004] However, the traditional method of renovating old walls has obvious deficiencies. Since the batch renovation mode is adopted, the entire construction time is significantly increased, greatly affecting the renovation speed and unable to quickly and effectively meet the urgent needs of residents for improving the living environment. Summary of the Invention

[0005] In order to improve the renovation speed of old walls, this application provides a reinforcement structure for old residential buildings and its reinforcement method.

[0006] In the first aspect, this application provides a reinforcement structure for old residential buildings, adopting the following technical solution: A reinforcement structure for old residential buildings includes support keels arranged at the bottom of the end beam. The support keels include main keels and secondary keels. The main keels are arranged along the extension direction of the end beam, and the secondary keels are arranged on both sides of the main keels and are evenly spaced along the extension direction of the main keels. An accommodation cavity is arranged between adjacent secondary keels on the same side; Clamping plates are arranged on the opposite sides of the end beam. The support keels are provided with connection components, and the clamping plates and the secondary keels are detachably fixed through the connection components; Connecting plates are hinged between adjacent secondary keels and are located in the accommodation cavity; The support column is slidably arranged below the connecting plate. When the support column abuts against the connecting plate, the connecting plate abuts against the bottom of the end beam. The support column includes a plurality of support plates, which are hinged to each other adjacent to each other. The support plates can be flipped to a state where the side walls are in the same end face. A plug-in slot is formed at the top of the support plate. A plug-in strip slides up and down at the bottom of the clamping plate. The clamping plate is provided with a driving assembly. When the support column abuts against the connecting plate, the driving assembly drives the plug-in strip to disengage from the plug-in slot. When the support plates are flipped to a state where the side walls are in the same end face and move below the clamping plate, the connecting plate is flipped downward to abut against the support plate. At this time, the driving assembly drives the plug-in strip to insert into the plug-in slot. When the plug-in strip is inserted into the plug-in slot, the vertical side walls of adjacent support plates abut against each other and cooperate with the support keel to form a perfusion cavity. Grouting holes and overflow holes are formed on the support plates.

[0007] By adopting the above technical solutions, the support keel is arranged at the bottom of the end beam and can cooperate with the support column to provide support for the end beam; the clamping plate is detachably fixed to the secondary keel through the connecting component, which supports the end beam and is convenient for installation and disassembly; the connecting plate is hinged between adjacent secondary keels and can abut against the bottom of the end beam when the support column abuts, further enhancing the stability of the end beam; the multiple support plates of the support column are hinged and can be flipped, and the state can be adjusted so that the support column participates in the erection of the new wall formwork; the driving assembly controls the cooperation between the plug-in strip and the plug-in slot, so that the vertical side walls of adjacent support plates abut against each other and form a perfusion cavity with the support keel, and perfusion operations can be carried out through the grouting holes and overflow holes to reinforce the wall. This structure can provide effective support during the renovation of the old residential building wall, ensure the safety of the building during the renovation process, and is convenient for construction, improving the renovation speed.

[0008] Optionally, the driving assembly includes a driving tension spring, a driving gear and a driving rack. A hinge shaft is rotatably connected between adjacent secondary keels. The connecting plate is arranged on the hinge shaft. The driving gear is arranged on the outer peripheral side of the hinge shaft and is rotatably connected in the secondary keel. The driving rack is slidably connected to the secondary keel, and the driving gear meshes with the driving rack. A chute for the plug-in strip to slide up and down is formed at the bottom of the clamping plate. The driving tension spring is arranged in the chute. The two ends of the driving tension spring are respectively connected to the bottom of the plug-in strip and the clamping plate. The driving tension spring drives the plug-in strip to slide into the chute. The clamping plate is provided with a through hole communicating with the chute and for the driving rack to slide through. The top of the insertion bar is inclined to form a driving surface aligned with the through hole. When the driving rack slides into the sliding groove, the driving rack slides on the driving surface, pushing the insertion bar out of the sliding groove.

[0009] By adopting the above technical solution, a driving assembly composed of a driving tension spring, a driving gear and a driving rack is used. With the meshing of the driving gear and the driving rack and the elastic action of the driving tension spring, the automatic sliding-in of the insertion bar in the sliding groove and the automatic sliding-out under the push of the driving rack are realized, and the accurate control of the insertion or detachment of the insertion bar from the insertion groove of the support plate can be achieved. Cooperating with the flipping and moving operations of the support columns, adjacent support plates cooperate with the support keels to form a perfusion cavity, which is convenient for the subsequent construction of a new wall and ensures that the components of the reinforcement structure can be smoothly connected and function properly.

[0010] Optionally, a counterweight block is arranged in the connecting plate.

[0011] By adopting the above technical solution, during the reinforcement process of old houses, a counterweight block is arranged in the connecting plate, so that the driving rack can better push the insertion bar to slide downward.

[0012] Optionally, the support plate is provided with an abutting plate, and the abutting plate includes an outer plate, an inner plate and a connecting spring. The outer plate slides up and down in the support plate and is located inside the support plate; The inner plate slides horizontally in the outer plate, the connecting spring is arranged in the outer plate, and the connecting spring pushes the inner plate to slide out of the support plate; A control assembly is arranged in the support plate. When the insertion bar is inserted into the insertion groove, the control assembly controls the support plate to slide upward to abut against the side of the connecting plate away from the hinge axis; The support column is provided with a fixing assembly, and when the support plates are flipped and folded to abut against each other, they are detachably fixed by the fixing assembly.

[0013] By adopting the above technical solution, an abutting plate is arranged, and the support plate can better support the end beam through the secondary keel by abutting against the connecting plate.

[0014] Optionally, the control assembly includes a control airbag, an air delivery pipe and a control pipe; The control airbag is arranged in the insertion groove. When the insertion bar is inserted into the insertion groove, the control airbag is squeezed; The control pipe is arranged in the support plate, the air delivery pipe is arranged in the support plate, both ends of the air delivery pipe are respectively communicated with the control airbag and the control pipe, and the top of the control pipe is connected to the outer plate; When the insertion bar squeezes the control airbag, the control pipe expands and pushes the outer plate to move upward.

[0015] By adopting the above technical solution, by using the control assembly composed of a control airbag, an air delivery pipe and a control pipe, when the insertion strip is inserted into the insertion groove to extrude the control airbag, the control pipe can be inflated to push the outer plate upward, so that the inner plate can abut against the connecting plate.

[0016] Optionally, limiting teeth are uniformly arranged up and down on the support plate, sliding teeth are arranged on the outer plate, and the sliding teeth are meshed with the limiting teeth; When the outer plate slides upward, the sliding teeth slide on the limiting teeth; When the outer plate slides downward, the limiting teeth unidirectionally support the sliding teeth.

[0017] By adopting the above technical solution, the abutting plate can better transmit the acting force to the support plate through the support of the limiting teeth on the sliding teeth.

[0018] Optionally, the outer plate and the inner plate are movably connected, and there is friction between the outer plate and the inner plate.

[0019] By adopting the above technical solution, the possibility that the inner plate directly detaches from the outer plate under the action of the connecting spring when the support plate is unfolded is reduced.

[0020] Optionally, the connecting assembly includes a connecting screw rod and a connecting nut; The connecting screw rod is arranged on the secondary keel, the connecting screw rod slidably penetrates through the clamping plate, and the connecting nut is threadedly connected to the connecting screw rod.

[0021] By adopting the above technical solution, through the cooperation of the connecting screw rod and the connecting nut, the detachable fixation of the clamping plate and the secondary keel is realized.

[0022] Optionally, the connecting screw rod includes a first rod body, a second rod body and a threaded column; The first rod body is arranged on the secondary keel, the threaded column is arranged on the second rod body, and a threaded hole for threaded connection of the threaded column is formed at the end of the first rod body; The connecting nut is threadedly connected to the second rod body.

[0023] By adopting the above technical solution, the second rod body is detachably connected to the first rod body through the threaded column, and the second rod body can be disassembled and removed after the construction of the new wall, without cutting off the protruding members after the construction of the new wall.

[0024] In a second aspect, the present application provides a method for strengthening old residential buildings, adopting the following technical solution: A method for strengthening old residential buildings includes the following steps: S1: When demolishing the old wall under the end beam, first abut the support keel against the bottom of the end beam, and then arrange the clamping plates on both sides of the support keel and connect and fix them through the connecting components; S2: Flip and fold the support plates of the same support column until their end faces abut against each other, then flip the connecting plate upward until it abuts against the bottom of the end beam, and then move the support column under the support keel until it abuts against the connecting plate; S3: When a new wall needs to be constructed, flip the support plates until the support plates of the same support column are on the same vertical plane, and then move the support plates to the bottom of the clamping plates. At this time, the support plates support the end faces through the clamping plates, and a formwork is set at the unblocked end of the support plates, so as to cooperate to form a pouring space; S4: Pour to form a new wall, and finally disassemble and remove the formwork, the support plates and the clamping plates.

[0025] By adopting the above technical solutions, during the renovation of the old residential wall, the support keel, the clamping plates and the connecting components can cooperate to support the end beam when demolishing the old wall, ensuring construction safety; after the support plates are flipped and spread out, they can be used to participate in the formwork of the components while continuing to support the end beam, accelerating the renovation speed and solving the problem of long construction time in traditional batch renovation.

[0026] In summary, the present application includes at least one of the following beneficial effects: 1. The reinforcement structure can play a role in supporting and reinforcing after the old wall under the end beam is demolished, reducing the possibility of threatening the overall structural safety of the house during direct renovation. At the same time, the reinforcement structure can participate in formwork erection while supporting and reinforcing during the construction of the new wall, greatly improving the renovation speed; 2. An abutting plate is provided, and by abutting the abutting plate against the connecting plate, the support plates can better support the end beam through the secondary keel. Description of the Drawings

[0027] Figure 1 is a schematic diagram of the state when the support column supports the end beam in the embodiment of the present application; Figure 2 is a schematic diagram of the state when the support plates construct the formwork in the embodiment of the present application; Figure 3 is an internal cross-sectional view of the embodiment of the present application; Figure 4 is Figure 3 the enlarged view of part A of Figure 5 is an internal cross-sectional view of the state when the abutting plate supports the connecting plate in the embodiment of the present application; Figure 6 is an internal cross-sectional view of the support plate in the embodiment of the present application; Figure 7 Yes Figure 6 Schematic enlarged view of Part B of

[0028] Reference numerals: 1, support keel; 11, main keel; 12, auxiliary keel; 121, hinge shaft; 13, accommodation cavity; 2, clamping plate; 21, insertion strip; 211, driving surface; 22, sliding groove; 23, through hole; 24, counterweight; 3, connection assembly; 31, connection screw; 311, first rod body; 312, second rod body; 313, threaded column; 314, threaded hole; 32, connection nut; 4, connection plate; 5, support column; 51, support plate; 511, grouting hole; 512, overflow hole; 513, limiting tooth; 52, insertion slot; 53, perfusion cavity; 54, abutting plate; 541, outer plate; 542, inner plate; 543, connection spring; 544, sliding tooth; 6, driving assembly; 61, driving tension spring; 62, driving gear; 63, driving rack; 7, control assembly; 71, control airbag; 72, air delivery pipe; 73, control pipe; 8, fixing assembly; 81, fixing bolt; 82, fixing nut. Detailed implementation manners

[0029] The following will further elaborate on this application Figures 1-7 in conjunction with the attached drawings.

[0030] An embodiment of this application discloses a reinforcement structure for old residential buildings.

[0031] Refer to Figure 1 and Figure 2 , the reinforcement structure for old residential buildings includes a support keel 1. After the old wall at the bottom of the end beam is demolished, the support keel 1 is arranged at the bottom of the end beam. The support keel 1 includes a main keel 11 and auxiliary keels 12. The main keel 11 is arranged along the extension direction of the end beam. The auxiliary keels 12 are fixedly connected to both sides of the main keel 11. There are multiple auxiliary keels 12 and they are evenly spaced along the extension direction of the main keel 11. An accommodation cavity 13 is formed between adjacent auxiliary keels 12 on the same side.

[0032] The reinforcement structure for old residential buildings further includes a connection plate 4. The clamping plates 2 are movably arranged on the opposite sides of the end beam. The clamping plates 2 extend along the length direction of the main keel 11. The clamping plates 2 are in mutual abutment with the side walls of the end beam. The support keel 1 is provided with a connection assembly 3. The clamping plates 2 and the auxiliary keels 12 are detachably fixed through the connection assembly 3.

[0033] The connecting component 3 includes a connecting screw 31 and a connecting nut 32. The connecting screw 31 is fixedly connected to the secondary keel 12. There are multiple connecting screws 31 and they correspond to the secondary keel 12 one by one. The connecting screw 31 slidably passes through the clamping plate 2, and the connecting nut 32 is threadedly connected to the connecting screw 31. By pressing the clamping plate 2 with the connecting nut 32, the connection and fixation between the clamping plate 2 and the supporting keel 1 are realized. At this time, the clamping plate 2 and the supporting keel 1 cooperate with each other to improve the stability of the end beam.

[0034] See Figure 3 and Figure 4 , the connecting screw 31 includes a first rod body 311, a second rod body 312 and a threaded column 313. The first rod body 311 is fixedly connected to the side of the secondary keel 12 away from the main keel 11. The first rod body 311 extends in the horizontal direction and is parallel to the secondary keel 12. The threaded column 313 is fixedly connected to one end of the second rod body 312 and is coaxially arranged. A threaded hole 314 is formed at the end of the first rod body 311 away from the main keel 11. The outer peripheral side wall of the threaded column 313 is threadedly connected to the peripheral side wall of the threaded hole 314. The connecting nut 32 is threadedly connected to the outer peripheral side of the second rod body 312. When the connecting nut 32 is screwed towards the clamping plate 2, the rotation direction of the connecting nut 32 is the same as the rotation direction when the second rod body 312 is screwed into the first rod body 311, so that the second rod body 312 can hold the fixed state with the first rod body 311 when the connecting nut 32 rotates close to the clamping plate 2.

[0035] See Figure 4 and Figure 5 , the old residential building reinforcement structure further includes a connecting plate 4. There is a hinge shaft 121 rotatably connected between two adjacent secondary keels 12. The hinge shaft 121 is located at a position away from the main keel 11. The connecting plate 4 is fixedly connected to the outer peripheral side of the hinge shaft 121, and the connecting plate 4 is located in the accommodation cavity 13. The connecting plate 4 can be turned downward away from the main keel 11. When the connecting plate 4 is turned downward to the vertical state, the vertical side wall on the side of the connecting plate 4 away from the main keel 11 is on the same vertical end face as the side of the secondary keel 12 away from the main keel 11.

[0036] See Figure 1 and Figure 2 , the old residential building reinforcement structure further includes a support column 5. The support column 5 is slidably arranged below the connecting plate 4. During use, the support column 5 is slid downward below the supporting keel 1, so that the top of the support column 5 slides on the connecting plate 4, driving the connecting plate 4 to turn upward until the support column 5 is directly below the accommodation cavity 13. At this time, the connecting plate 4 is in the horizontal state. When the support column 5 abuts against the bottom end face of the connecting plate 4, the end face on the side of the connecting plate 4 away from the support column 5 abuts against the bottom of the end beam. The support column 5 supports the end beam through the connecting plate 4, further improving the stability of the end beam.

[0037] The support column 5 includes a plurality of support plates 51, and the support plates 51 are in the shape of rectangular plates. The adjacent support plates 51 of the same support column 5 are respectively hinged to each other through hinges, and the hinge joints between the adjacent support plates 51 of the same support column 5 are arranged in a relatively offset manner. During use, the support plates 51 can be flipped to a state where one side vertical side walls are in the same vertical end face state, and at this time, a formwork for constructing a new wall can be formed between the support plates 51; at the same time, the support plates 51 can be flipped and folded to a state where the vertical end faces are in contact with each other to form the support column 5 structure.

[0038] See Figure 2 With Figure 4 , a plug-in groove 52 is formed at the top of the support plate 51, and the plug-in groove 52 penetrates horizontally to the outside of the support plate 51. When the support plate 51 is flipped to a state where one side vertical side walls are in the same vertical end face state, the adjacent plug-in grooves 52 communicate with each other. A sliding groove 22 extending in the vertical direction is formed at the bottom of the clamping plate 2, and a plug-in strip 21 is arranged on the support plate 51, and the plug-in strip 21 slides up and down in the sliding groove 22.

[0039] The clamping plate 2 is provided with a driving assembly 6. When the support column 5 abuts against the connecting plate 4, the driving assembly 6 drives the plug-in strip 21 to disengage from the plug-in groove 52; when the support plate 51 is flipped to a state where the side walls are in the same vertical end face state and moves below the clamping plate 2, the connecting plate 4 is flipped downward to abut against the support plate 51, and the driving assembly 6 drives the plug-in strip 21 to insert into the plug-in groove 52, so that the support plate 51 continues to support the end beam while participating in the formwork erection for constructing a new wall.

[0040] The driving assembly 6 includes a driving tension spring 61, a driving gear 62 and a driving rack 63. The driving tension spring 61 is installed in the sliding groove 22, and there are multiple driving springs which are arranged at equal intervals. The bottom of the driving tension spring 61 is fixedly connected to the bottom of the plug-in strip 21, and the top of the driving tension spring 61 is fixedly connected to the groove wall on the side of the sliding groove 22 far away from the groove opening. When the driving tension spring 61 elastically releases, it drives the plug-in strip 21 to slide into the sliding groove 22.

[0041] See Figure 4 With Figure 5 , the driving gear 62 is fixedly connected to the outer peripheral side of the hinge shaft 121 and is rotatably connected to the secondary keel 12. The driving rack 63 is slidably connected to the secondary keel 12, the sliding direction of the driving rack 63 is parallel to the length direction of the secondary keel 12, and the driving gear 62 meshes with the driving rack 63. A counterweight block 24 is fixedly embedded in the connecting plate 4. When the connecting plate 4 is flipped downward to the vertical state, it drives the hinge shaft 121 to rotate. At this time, the driving gear 62 drives the driving rack 63 to protrude out of the secondary keel 12 in a direction away from the main keel 11.

[0042] On one side of the clamping plate 2 close to the secondary keel 12, a through hole 23 is formed. The through hole 23 communicates with the sliding groove 22 and is aligned with the driving rack 63. The top of the insertion bar 21 is inclined to form a driving surface 211, and the driving surface 211 is aligned with the through hole 23.

[0043] See Figure 4 With Figure 6 , when the insertion slot 52 is aligned with the insertion bar 21 and the connecting plate 4 is flipped downward to the vertical state, the driving rack 63 slides into the sliding groove 22. The driving rack 63 slides on the driving surface 211, pushing the insertion bar 21 to protrude out of the sliding groove 22. At this time, the insertion bar 21 is inserted into the insertion slot 52, enabling the connection between the support plate 51 and the clamping plate 2 and reducing the possibility of the support plate 51 sliding away from the bottom of the clamping plate 2. When the insertion bar 21 is inserted into the insertion slot 52, the vertical side walls of adjacent support plates 51 abut against each other and cooperate with the support keel 1 to form a perfusion cavity 53 for constructing a new wall.

[0044] See Figure 5 , the support plate 51 is provided with an abutting plate 54. The abutting plate 54 includes an outer plate 541, an inner plate 542, and a connecting spring 543. An abutting groove extending in the vertical direction is formed on the side wall of the support plate 51. When the support plates 51 of the same support column 5 (the support column 5 is marked in Figure 1 ) are flipped to the state where their side walls are in the same vertical end face, the abutting grooves of adjacent support plates 51 are on the side close to the main keel 11.

[0045] The outer plate 541 slides up and down in the abutting groove. A connecting groove extending in the horizontal direction is formed on the vertical end face of the outer plate 541 facing the mouth of the abutting groove. The inner plate 542 slides in the connecting groove in the horizontal direction. The inner plate 542 can slide out of the connecting groove, and there is friction between the inner plate 542 and the peripheral groove wall of the connecting groove. The connecting spring 543 is installed in the abutting groove. One end of the connecting spring 543 abuts against the inner plate 542, and the other end abuts against the groove wall on the side of the connecting groove away from the mouth of the groove. When the connecting spring 543 elastically releases, it pushes the inner plate 542 to slide out of the connecting groove until the inner plate 542 protrudes out of the support plate 51. When the support plate 51 is flipped and folded, the mutually aligned inner plates 542 push each other and slide into the connecting groove, enabling the support plate 51 to be folded to form the support column 5.

[0046] See Figure 1 With Figure 2, the support column 5 is provided with a fixing component 8. When the support plates 51 are turned and folded to abut against each other and form the support column 5, they are detachably fixed by the fixing component 8. The fixing component 8 includes a fixing bolt 81 and a fixing nut 82. Grouting holes 511 and overflow holes 512 are formed on the support plates 51, and the grouting holes 511 are located below the overflow holes 512. When the support plates 51 are turned and folded to abut against each other and form the support column 5, the grouting holes 511 are aligned with each other, and the overflow holes 512 are aligned with each other. There are multiple fixing bolts 81. At this time, the fixing bolts 81 are respectively passed through the aligned overflow holes 512 and the aligned grouting holes 511, and then the fixing nuts 82 are threadedly connected to the fixing bolts 81 to realize the connection and fixation between the support plates 51, which is beneficial to maintaining the state of the support column 5. When the support plates 51 need to be turned and spread out, first remove the fixing nuts 82, and then slide out the fixing bolts 81. At this time, the support plates 51 are in a free turning state.

[0047] See And Figure 6 , a control component 7 is arranged inside the support plate 51. When the insertion strip 21 is inserted into the insertion slot 52, the control component 7 controls the support plate 51 to slide upward until the support plate 51 abuts against the side of the connecting plate 4 away from the hinge shaft 121. The connecting plate 4 can transmit the acting force to the support plate 51 through the support plate 51, so that the support plate 51 can continue to support the end beam through the secondary keel 12, improving the stability of the end beam during the construction of the new wall.

[0048] The control component 7 includes a control airbag 71, an air delivery pipe 72 and a control pipe 73. The control airbag 71 is installed in the insertion slot 52, and the bottom outer wall of the control airbag 71 is fixed to the bottom wall of the insertion slot 52. When the insertion strip 21 is inserted into the insertion slot 52, the bottom of the insertion strip 21 abuts against the top outer wall of the control airbag 71 and presses the control airbag 71 downward.

[0049] See And Figure 7 Figure 5 Figure 7 , the control pipe 73 is installed in the abutting slot. The control pipe 73 is of a bellows pipe structure. The bottom of the control pipe 73 is fixed to the bottom wall of the abutting slot, and the top of the control pipe

[0050] The support plate 51 is provided with limiting teeth 513, and the limiting teeth 513 are fixedly connected to the vertical side wall of one side of the abutting groove. There are multiple limiting teeth 513 and they are evenly arranged up and down. A sliding tooth 544 is fixedly connected to the vertical side wall of the outer plate 541 facing the limiting teeth 513, and the sliding tooth 544 meshes with the limiting teeth 513. The sliding tooth 544 and the limiting teeth 513 are respectively in the structure of right-angled triangular teeth, and the sliding tooth 544 and the limiting teeth 513 are made of materials with elastic deformation ability, such as plastic, stainless steel, etc.

[0051] When the outer plate 541 slides upward, the sliding tooth 544 slides on the limiting teeth 513; when the outer plate 541 slides downward, the limiting teeth 513 support the sliding tooth 544 unidirectionally. At this time, the sliding tooth 544 on the outer plate 541 transmits the acting force to the support plate 51 through the limiting teeth 513, improving the support effect of the support plate 51 on the end beam.

[0052] The implementation principle of an old residential building reinforcement structure in an embodiment of the present application is as follows: When the old wall under the end beam is demolished, first place the support keel 1 in abutment with the bottom of the end beam, then place the clamping plates 2 on both sides of the support keel 1 and the clamping plates 2 abut against the side wall of the end beam, and then connect and fix the clamping plates 2 and the secondary keel 12 through the connecting nuts 32 and the connecting screws 31. Then support the end beam by the support column 5 abutting against the support plate 51, improving the stability of the end beam when each old wall is disassembled. When a new wall needs to be constructed under the end beam, turn out and spread the support plates 51 until the vertical side walls of one side of each support plate 51 are in the same vertical end face state, and then move the support plates 51 under the clamping plate so that the insertion slots 52 are aligned with the insertion strips 21. When the support plate 51 moves to the state where the insertion slots 52 are aligned with the insertion strips 21, the connecting plate 4 is turned downward to the vertical state. At this time, the insertion strip 21 is inserted into the insertion slot 52, and the outer plate 541 moves upward until the inner plate 542 abuts against the connecting plate 4, which is beneficial to maintaining the stability of the end beam during the construction of the new wall. When the construction of the new wall is completed, the support plates 51, the clamping plates 2 and the second rod body 312 can be disassembled and removed. At this time, the support keel 1 and the connecting plate 4 improve the stability between the new wall and the end beam.

[0053] On the other hand, the present application discloses an old residential building reinforcement method, including the following steps: Step 1: When the old wall under the end beam is demolished, first place the support keel 1 in abutment with the bottom of the end beam, then place the clamping plates 2 on both sides of the support keel 1 and connect and fix them through the connecting assembly 3; Step 2: Flip and fold the support plates 51 of the same support column 5 until their end faces abut against each other, then turn the connecting plate 4 upward until it abuts against the bottom of the end beam, and then move the support column 5 under the support keel 1 until it abuts against the connecting plate 4; Step 3: When a new wall needs to be constructed, flip the support plate 51 until the support plates 51 of the same support column 5 are on the same vertical plane, and then move the support plate 51 to the bottom of the clamping plate 2. At this time, the support plate 51 supports the end face through the clamping plate 2, and the end of the template support plate 51 is not blocked, so as to cooperate to form a pouring space; Step 4: Pour to form a new wall, and finally disassemble and remove the template, the support plate 51 and the clamping plate 2.

[0054] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An old residential building reinforcement structure, characterized in that: It includes a support keel (1) disposed at the bottom of the end beam. The support keel (1) includes a main keel (11) and a secondary keel (12). The main keel (11) is arranged along the extending direction of the end beam. The secondary keel (12) is disposed on both sides of the main keel (11) and is evenly spaced along the extending direction of the main keel (11). An accommodation cavity (13) is provided between adjacent secondary keels (12) on the same side. Clamping plates (2) are disposed on opposite sides of the end beam. The support keel (1) is provided with a connection assembly (3). The clamping plates (2) and the secondary keel (12) are detachably fixed through the connection assembly (3). A connecting plate (4) is hinged between adjacent secondary keels (12) and is located within the accommodation cavity (13). A support column (5) is slidably disposed below the connecting plate (4). When the support column (5) abuts against the connecting plate (4), the connecting plate (4) abuts against the bottom of the end beam. The support column (5) includes a plurality of support plates (51). Adjacent support plates (51) are hinged by hinges, and the support plates (51) can be flipped to a state where the side walls are in the same end face. A plug-in slot (52) is formed at the top of the support plate (51). A plug-in strip (21) slides up and down at the bottom of the clamping plate (2). The clamping plate (2) is provided with a driving assembly (6). When the support column (5) abuts against the connecting plate (4), the driving assembly (6) drives the plug-in strip (21) to disengage from the plug-in slot (52). When the support plates (51) are flipped to a state where the side walls are in the same end face and move below the clamping plate (2), the connecting plate (4) is flipped downward to abut against the support plates (51). At this time, the driving assembly (6) drives the plug-in strip (21) to insert into the plug-in slot (52). When the plug-in strip (21) is inserted into the plug-in slot (52), the vertical side walls of adjacent support plates (51) abut against each other and cooperate with the support keel (1) to form a grouting cavity (53). Grouting holes (511) and slurry overflow holes (512) are formed on the support plates (51).

2. The reinforced structure for an old residential building according to claim 1, wherein: The driving assembly (6) includes a driving tension spring (61), a driving gear (62), and a driving rack (63). A hinge shaft (121) is rotatably connected between adjacent secondary keels (12). The connecting plate (4) is disposed on the hinge shaft (121). The driving gear (62) is disposed on the outer peripheral side of the hinge shaft (121) and is rotatably connected within the secondary keel (12). The driving rack (63) is slidably connected to the secondary keel (12). The driving gear (62) meshes with the driving rack (63). A chute (22) for the up-and-down sliding of the plug-in strip (21) is formed at the bottom of the clamping plate (2). The driving tension spring (61) is disposed within the chute (22). The two ends of the driving tension spring (61) are respectively connected to the bottom of the plug-in strip (21) and the clamping plate (2). The driving tension spring (61) drives the plug-in strip (21) to slide into the chute (22). The clamping plate (2) is provided with a through hole (23) that communicates with the sliding groove (22) and through which the driving rack (63) slides; The top of the insertion bar (21) is inclined to form a driving surface (211) that aligns with the through hole (23). When the driving rack (63) slides into the sliding groove (22), the driving rack (63) slides on the driving surface (211), pushing the insertion bar (21) to protrude out of the sliding groove (22).

3. The reinforced structure for old residential buildings according to claim 2, characterized in that: A counterweight (24) is arranged inside the connecting plate (4).

4. The reinforced structure for old residential buildings according to claim 2, characterized in that: The support plate (51) is provided with an abutting plate (54). The abutting plate (54) includes an outer plate (541), an inner plate (542), and a connecting spring (543). The outer plate (541) slides up and down on the support plate (51) and is located inside the support plate (51); The inner plate (542) slides horizontally on the outer plate (541). The connecting spring (543) is arranged inside the outer plate (541), and the connecting spring (543) pushes the inner plate (542) to slide out of the support plate (51); A control component (7) is arranged inside the support plate (51). When the insertion bar (21) is inserted into the insertion slot (52), the control component (7) controls the support plate (51) to slide upward to abut against the side of the connecting plate (4) away from the hinge shaft (121); The support column (5) is provided with a fixing component (8). When the support plates (51) are flipped and folded to abut against each other, they are detachably fixed by the fixing component (8).

5. The reinforced structure for old residential buildings according to claim 4, characterized in that: The control component (7) includes a control airbag (71), an air delivery pipe (72), and a control pipe (73); The control airbag (71) is arranged inside the insertion slot (52). When the insertion bar (21) is inserted into the insertion slot (52), the control airbag (71) is squeezed; The control pipe (73) is arranged inside the support plate (51), and the air delivery pipe (72) is arranged inside the support plate (51). Both ends of the air delivery pipe (72) communicate with the control airbag (71) and the control pipe (73) respectively. The top of the control pipe (73) is connected to the outer plate (541); When the insertion bar (21) squeezes the control airbag (71), the control pipe (73) expands and pushes the outer plate (541) to move upward.

6. The reinforced structure for old residential buildings according to claim 5, characterized in that: Limiting teeth (513) are evenly arranged up and down on the support plate (51). The outer plate (541) is provided with sliding teeth (544), and the sliding teeth (544) are engaged with the limiting teeth (513); When the outer plate (541) slides upward, the sliding teeth (544) slide on the limiting teeth (513); When the outer plate (541) slides downward, the limiting teeth (513) support the sliding teeth (544) unidirectionally.

7. An old residential building reinforcement structure according to claim 5, characterized in that: The outer plate (541) and the inner plate (542) are movably connected, and there is friction between the outer plate (541) and the inner plate (542).

8. The reinforced structure for old residential buildings according to claim 1, wherein: The connecting component (3) includes a connecting screw (31) and a connecting nut (32); The connecting screw rod (31) is arranged on the secondary keel (12), the connecting screw rod (31) slidably penetrates through the clamping plate (2), and the connecting nut (32) is threadedly connected to the connecting screw rod (31).

9. The reinforced structure for an old residential building according to claim 8, characterized in that: The connecting screw rod (31) includes a first rod body (311), a second rod body (312) and a threaded column (313); The first rod body (311) is arranged on the secondary keel (12), the threaded column (313) is arranged on the second rod body (312), and a threaded hole (314) for threaded connection of the threaded column (313) is formed at the end of the first rod body (311); The connecting nut (32) is threadedly connected to the second rod body (312).

10. A method for strengthening an old residential building, which uses an old residential building strengthening structure as described in any one of claims 1-9, characterized in that, It includes the following steps: S1: When demolishing the old wall under the end beam, first abut the support keel (1) against the bottom of the end beam, and then arrange the clamping plate (2) on both sides of the support keel (1) and connect and fix it through the connecting component (3); S2: Flip and fold the support plates (51) of the same support column (5) until their end faces abut against each other, then flip the connecting plate (4) upward until it abuts against the bottom of the end beam, and then move the support column (5) under the support keel (1) until it abuts against the connecting plate (4); S3: When a new wall needs to be constructed, flip the support plate (51) until the support plates (51) of the same support column (5) are on the same vertical plane, and then move the support plate (51) to the bottom of the clamping plate (2). At this time, the support plate (51) supports the end face through the clamping plate (2), and the unblocked end of the support plate (51) is provided with a formwork, so as to cooperate to form a pouring space; S4: Pour to form a new wall, and finally disassemble and remove the formwork, the support plate (51) and the clamping plate (2).

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