Wall rebar planting method for repairing deteriorated brick eave on exterior wall of historical building

Abstract

Disclosed in the present invention is a wall rebar planting method for repairing a deteriorated brick eave on an exterior wall of a historical building. The method comprises the following steps: digging out a wall hole at a wall position of an original deteriorated brick eave; cutting rebar planting grooves in upper wall and lower walls of the wall hole, and cutting a flow channel in an outer brick corresponding to the upper rebar planting groove; sleeving a locking piece on a rebar and then placing the rebar into the rebar planting grooves; injecting a mixed mortar into the lower rebar planting groove to fix the rebar; laying bricks in layers to the middle of the wall hole, forming a wall penetrating hole in an inner side wall of the wall hole, and a wall connecting piece passing through the wall penetrating hole and being fixed to the wall body; laying a brick layer in the middle of the wall hole, adjusting the position of the locking piece into a cavity of a brick, fixing the locking piece to the brick and then fixedly connecting the locking piece to the wall connecting piece by means of a connecting piece; continuing to lay bricks, and injecting the mixed mortar into the rebar planting groove and a cavity of the uppermost layer of brick by means of the flow channel; and after the mixed mortar is solidified, repairing the outer surface of the flow channel by using brick powder. According to the present invention, the repaired brick eave structure is more stable, and the impact on the original appearance of the exterior wall of the historical building is smaller.

Description

Wall anchoring method for repairing deteriorated brick eaves of outer wall of historical building TECHNICAL FIELD

[0001] The present application relates to the field of historical building repair, in particular to a wall anchoring method for repairing deteriorated brick eaves of outer wall of historical building. BACKGROUND

[0002] Yangshupu industrial zone located in Shanghai Yangpu Binjiang is an important industrial base in modern China, known as "China's modern industrial civilization corridor", and once called "the world's only industrial rust belt" by UNESCO. The industrial heritage building group in this place has an important position in the history of modern industrial development in China. However, due to disrepair, weathering, and rain erosion, the outer facade of the clear water brick wall is damaged in many places, especially the cantilevered brick eaves structure of the clear water brick wall is severely damaged, causing the original style of the historical building to be destroyed and in urgent need of repair.

[0003] During the repair of deteriorated brick eaves, in order to increase the horizontal pull force of the bricks, it is necessary to pass through the bricks by anchoring, but the conventional anchoring method tends to be surface anchoring. However, due to the original appearance requirements, the outer surface of the historical building cannot be anchored externally, and the internal anchoring method needs to overcome the limited space of the wall hole.

[0004] SUMMARY

[0005] Based on the deficiencies in the prior art, the present application provides a wall anchoring method for repairing deteriorated brick eaves of outer wall of historical building, which can provide sufficient horizontal pull force for the deteriorated brick eaves after repair without damaging the original appearance of the historical building as much as possible, and can reduce the strength reduction caused by wall damage during operation.

[0006] Based on the above application purposes, the present application provides the following technical solutions:

[0007] A wall anchoring method for repairing deteriorated brick eaves of outer wall of historical building, comprising the following steps:

[0008] S1. Remove the deteriorated brick eaves and dig a wall hole inward at the position of the wall of the original deteriorated brick eaves;

[0009] S2. Cut a anchoring slot at the upper and lower positions of the preset anchoring, and cut a flow-through slot on the external brick corresponding to the anchoring slot on the upper wall of the wall hole, one end of the flow-through slot is connected with the anchoring slot, and the other end of the flow-through slot is arranged on the outer surface of the wall;

[0010] S3. The locking piece is sleeved on the steel bar through the center hole, and the steel bar is inclinedly placed into the upper and lower anchoring slots through the flow-through slot, and the position of the steel bar is adjusted and temporarily supported and fixed;

[0011] S4. Pouring mixed mortar into the embedded steel bar groove located at the lower wall of the wall hole, and fixing the steel bar after the mixed mortar solidifies;

[0012] S5. Layered masonry of bricks from bottom to top to the middle of the wall hole, each layer of bricks is provided with a cavity for accommodating the steel bar, a through-wall hole is punched at the middle of the inner wall of the wall hole corresponding to the position of the steel bar, the through-wall hole penetrates the wall, and one end of the wall connecting piece is fixed to the wall through the through-wall hole;

[0013] S6. Masonry of the brick layer in the middle of the wall hole, and adjusting the position of the locking piece to the cavity of the brick, and then fixing the locking piece to the brick, and then fixing the locking piece to the brick through the connecting piece and the wall connecting piece;

[0014] S7. Continue to layer masonry of bricks upwards until the wall hole is completely filled and the brick eaves are completely set, and pour mixed mortar into the embedded steel bar groove located at the upper wall of the wall hole and the cavity of the uppermost layer of bricks through the flow-through groove;

[0015] S8. After the mixed mortar solidifies, repair the outer surface of the flow-through groove with brick powder.

[0016] Further, the length of the steel bar satisfies the formula L+S

[0017] Further, the length of the steel bar satisfies the formula L+S+A

[0018] Further, the steel bar is a smooth steel bar, and the cavity has a square cross-sectional shape.

[0019] Further, the locking piece is a four-jaw nut, which comprises a central hole, three fixed claws and a connecting rod, the central hole is provided with an internal thread matched with the external thread of the smooth steel bar, the three fixed claws and the connecting rod are evenly distributed at the outer wall of the central hole, the fixed claw comprises a screw rod and a supporting nut, and the end of the connecting rod not connected with the central hole is provided with a connecting hole, the central axis of the connecting hole is parallel to the central axis of the smooth steel bar.

[0020] Further, the wall connecting piece comprises a fixed hole, a through-wall rod and a fixed nut, the through-wall rod penetrates the wall through the through-wall hole, the fixed hole is arranged at one end of the through-wall rod close to the wall hole, the central axis of the fixed hole is parallel to the central axis of the smooth steel bar, and the other end of the through-wall rod is provided with an external thread, and the wall connecting piece is fixed to the wall through the fixed nut.

[0021] Further, the connecting piece is a U-shaped steel bar.

[0022] Further, in the step S6, the position of the locking member is adjusted into the cavity of the brick, and then the locking member is fixed with the brick, and the method of fixing connection between the locking member and the wall connecting member through the connecting member comprises the following steps:

[0023] S61. The locking member is rotated until the locking member is located inside the cavity, and the connecting rod is perpendicular to the side wall of the wall hole, and the screw rods of the three fixing claws are respectively perpendicular to the other three side walls of the cavity;

[0024] S62. The support nut is rotated outward until the support nut is in close contact with the outer wall of the cavity, so that the locking member is fixed and supported on the brick;

[0025] S63. The U-shaped steel bar is fixed and connected with the wall connecting member by penetrating the connecting hole and the fixing hole at both ends of the U-shaped steel bar;

[0026] S64. The fixing nut is rotated until the locking member is fixed with the wall connecting member.

[0027] Further, the wall connecting member further comprises a steel plate and a combined gasket, and the steel plate and the combined gasket are located between the fixing nut and the wall body, and the thickness of the steel plate is 5mm.

[0028] Based on the above technical scheme, the present application has the following advantages compared with the prior art: through the setting of the flow-through groove and the planted steel bar groove, a space for vertically placing the steel bar is opened, and the locking member and the poured mixed mortar are used to increase the pulling force between the steel bar and the brick, and the wall connecting member and the connecting member are connected with the steel bar, so as to further increase the horizontal pulling force, thereby ensuring the horizontal pulling strength of the repaired brick eaves, and the influence on the original appearance of the outer wall of the historical building is also small. BRIEF DESCRIPTION OF DRAWINGS

[0029] Fig. 1 is a perspective view of the vertical surface slotting of the upper wall of the wall hole in the embodiment of the present application.

[0030] Fig. 2 is a perspective view of the vertical surface slotting of the upper wall of the wall hole in the embodiment of the present application.

[0031] Fig. 3 is a structural schematic diagram of the lower wall of the wall hole after grouting of the brick in the embodiment of the present application.

[0032] Fig. 4 is a structural schematic diagram of the lower wall of the wall hole after grouting of the brick in the embodiment of the present application.

[0033] Fig. 5 is a schematic diagram of the steel bar connection in the case of the upper wall of the brick and the lower wall of the brick in the embodiment of the present application.

[0034] Fig. 6 is a schematic diagram of the steel bar connection in the case of the upper wall of the brick and the lower wall of the brick in the embodiment of the present application.

[0035] Figure 7 is a schematic diagram of the reinforcement connection in the case of upper wall brick and lower wall brick in the embodiment of the present application.

[0036] Figure 8 is a schematic diagram of the reinforcement connection in the case of upper wall brick and lower wall brick in the embodiment of the present application.

[0037] Figure 9 is a schematic diagram of the locking member and the brick connection in the embodiment of the present application.

[0038] Figure 10 is a schematic diagram of the locking member and the brick connection in the embodiment of the present application.

[0039] Figure 11 is a schematic diagram of the brick eave structure effect after repair in the embodiment of the present application.

[0040] Figure 12 is a schematic diagram of the structure of the locking member in the embodiment of the present application.

[0041] Figure 13 is a schematic diagram of the structure of the connecting member in the embodiment of the present application.

[0042] Figure 14 is a schematic diagram of the structure of the locking member, the connecting member and the wall connecting member in the embodiment of the present application.

[0043] Figure 15 is a top view of the wall connecting member in the embodiment of the present application.

[0044] Figure 16 is a front view of the wall connecting member in the embodiment of the present application. DETAILED DESCRIPTION

[0045] The present application will be further described in detail below in conjunction with the drawings and specific examples, so as to be more clearly understood and to understand the structure type and use mode, but the protection scope of the present application patent should not be limited thereby.

[0046] A wall body reinforcing method for repairing deteriorated brick eaves of historical building outer wall, the method comprising the following steps:

[0047] S1. removing the deteriorated brick eaves and digging a wall hole in the wall body position of the original deteriorated brick eaves, the height and width of the wall hole being consistent with the height and width of the deteriorated brick eaves;

[0048] S2. Cut a dowel slot 1 at the upper and lower positions of the preset dowel, and cut a flow-through slot 2 on the corresponding outer brick of the upper wall of the wall hole, one end of the flow-through slot 2 is connected with the dowel slot 1, and the other end of the flow-through slot 2 is located on the outer surface of the wall, and the position of the through-wire steel bar to be placed in the wall hole is cut off. The skin brick and the bonding mortar inwardly corresponding to the upper and lower walls of the wall hole are cut off by using a hand-held cutting machine or an angle grinder, the longitudinal position of the cut brick is two and a half of the transverse distance of the wall hole, and the cut length of the brick is one whole brick transversely cut off; the order brick is cut transversely perpendicular to the wall surface with the center of the steel bar 3 and the two sides of the center outwardly by 60mm, the cutting line is C-shaped after the cutting is completed, and the brick and the bonding layer connected with the brick are knocked off along the cutting line by using a chisel, the upper wall of the position of the through-wire steel bar to be placed in the wall hole is opened by using a hand-held cutting machine or an angle grinder perpendicular to the wall surface to form the flow-through slot 2, and the flow-through slot 2 is communicated with the original dowel slot 1, the width of the flow-through slot 2 is 15mm, and the height of the flow-through slot 2 is 30mm from the bottom edge of the slotting brick, the garbage after chiseling and opening the flow-through slot 2 is cleaned, the bottom end of the through-wire steel bar is placed into the lower dowel slot 1 chiseled in the wall hole, and the through-wire steel bar is inclined and placed into the upper dowel slot 1 through the upper flow-through slot 2, as shown in FIG. 1 and FIG. 2, which respectively show the brick structure of the wall hole upper wall after the slotting of the brick and the order brick;

[0049] S3. The locking piece 4 is sleeved on the steel bar 3 through the center hole 5, the steel bar 3 is inclined and placed into the upper and lower dowel slots 1 through the flow-through slot 2, the position of the steel bar 3 is checked and temporarily supported and fixed, the position of the through-wire steel bar is set according to the modulus of the brick, but it is necessary to ensure that the new installed brick eave vertical first brick and tail brick are connected by the steel bar 3, the spacing between the intermediate connecting steel bars 3 of the brick eave is not greater than 500mm, the embedded depth of the Φ8 through-wire steel bar is one half of the skin brick upwardly and one skin brick plus one mortar joint downwardly;

[0050] S4. The position of the through-wire steel bar is checked, the lower dowel slot 1 is poured into grouting material, the lower end of the through-wire steel bar is embedded into the grouting material, and the steel bar 3 is fixed after the mixed mortar is solidified, as shown in FIG. 3 and FIG. 4, which respectively show the brick structure of the wall hole lower wall after the grouting of the brick and the order brick, at this time, the grouting and fixing of the steel bar 3 includes four forms, as shown in FIG. 5-8;

[0051] S5. The brick is built in layers from bottom to top to the middle of the wall hole, each layer of brick is provided with a cavity 6 for accommodating the steel bar 3, one side of the cavity 6 close to the inner wall of the wall hole is provided with an opening 7, the opening 7 needs to be aligned with the position of the steel bar 3 and pushed inwardly when the brick is built, so that the brick is tightly attached to the inner wall of the wall hole and the steel bar 3 is located at the center of the cavity 6, then the mixed mortar is poured into the cavity 6 to fill the cavity 6, each layer of brick is built according to the above method, a through-wall hole is punched in the middle of the inner wall of the wall hole corresponding to the position of the steel bar 3, the through-wall hole penetrates the wall, and one end of the wall connecting piece 8 is fixed with the wall through the through-wall hole;

[0052] S6. As shown in FIG. 9 and FIG. 10, the installation diagram of the locking piece 4 when the brick with the cavity 6 is a queen closer and a king closer, respectively, the brick layer in the middle of the wall hole is built, the position of the locking piece 4 is adjusted into the cavity 6 of the brick, then the locking piece 4 is fixed with the brick, and the locking piece 4 is fixedly connected with the wall connecting piece 8 through the connecting piece 9 after being fixed with the brick;

[0053] S7. Continue to build the brick layer upward until the wall hole is completely filled and the brick eaves are completely built, and the mixed mortar is poured into the embedded bar groove 1 located on the upper wall of the wall hole and the cavity 6 of the uppermost layer of the brick through the flow-through groove 2;

[0054] S8. After the mixed mortar is solidified, the outer surface of the flow-through groove 2 is repaired with brick powder, and FIG. 11 is an effect diagram of the repaired brick eaves.

[0055] Further, the length of the reinforcing steel bar 3 satisfies the formula L+S<G<L+2S, wherein L is the height of the wall hole, S is the depth of the embedded bar groove 1, and G is the length of the reinforcing steel bar 3.

[0056] Further, the length of the reinforcing steel bar 3 satisfies the formula L+S+A<G<L+2S, wherein A is the depth of the flow-through groove 2.

[0057] Further, the reinforcing steel bar 3 is a straight reinforcing steel bar, and the cavity 6 has a square cross-sectional shape.

[0058] As shown in FIG. 12, the locking piece 4 is a four-jaw nut, which includes a central hole 5, three fixed claws 10, and a connecting rod 11. The central hole 5 is provided with internal threads matched with external threads of the straight reinforcing steel bar. The three fixed claws 10 and the connecting rod 11 are evenly distributed at equal intervals on the outer wall of the central hole 5. The fixed claw 10 includes a screw rod 12 and a supporting nut 13. The connecting rod 11 is provided with a connecting hole 14 at an end not connected with the central hole 5. The central axis of the connecting hole 14 is parallel to the central axis of the straight reinforcing steel bar.

[0059] The wall connecting piece 8 includes a fixed hole 15, a wall-penetrating rod 16, and a fixed nut 17. The wall-penetrating rod 16 penetrates the wall through a wall-penetrating hole. The fixed hole 15 is arranged at one end of the wall-penetrating rod 16 close to the wall hole. The central axis of the fixed hole 15 is parallel to the central axis of the straight reinforcing steel bar. The other end of the wall-penetrating rod 16 is provided with external threads. The wall connecting piece 8 is fixed on the wall through the fixed nut 17.

[0060] As shown in FIG. 13, the connecting piece 9 is a U-shaped reinforcing steel bar.

[0061] As shown in FIG. 14, in the step S6, the position of the locking piece 4 is adjusted into the cavity 6 of the brick, then the locking piece 4 is fixed with the brick, and the locking piece 4 is fixedly connected with the wall connecting piece 8 through the connecting piece 9 after being fixed with the brick. The method specifically includes the following steps:

[0062] S61. Rotating the locking piece 4 until the locking piece 4 is entirely inside the cavity 6, and ensuring that the connecting rod 11 is perpendicular to the wall hole side wall, at this time the screw rod 12 of the three fixing claws 10 is respectively perpendicular to the other three side walls of the cavity 6;

[0063] S62. Rotating the support nut 13 outward until the support nut 13 is in close contact with the outer wall of the cavity 6, so that the locking piece 4 is fixedly supported on the brick;

[0064] S63. Making the locking piece 4 and the wall connecting piece 8 fixedly connected by the way that the U-shaped steel rod passes through the connecting hole 14 and the fixing hole 15 respectively;

[0065] S64. Rotating the fixing nut 17 until the locking piece 4 and the wall connecting piece 8 are fixedly and firmly connected.

[0066] Further, as shown in FIG. 15 and FIG. 16, the wall connecting piece 8 further comprises a steel plate 18 and a combined gasket 19, the steel plate 18 and the combined gasket 19 are located between the fixing nut 17 and the wall, and the thickness of the steel plate 18 is 5 mm.

[0067] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application but not to limit it, although the present application has been described in detail with reference to the above examples, those skilled in the art should understand that: the specific embodiments of the present application can be modified or replaced by the same, without departing from the spirit and scope of the present application, any modification or equivalent replacement, which should be covered in the protection scope of the claims of the present application.

Claims

1. A wall reinforcement method for repairing deteriorated brick eaves on the exterior walls of historical buildings, characterized in that: The method includes the following steps: S1. Demolish the deteriorated brick eaves and dig a wall hole inward at the position of the wall where the original deteriorated brick eaves were located; S2. Cut a rebar planting groove at each of the upper and lower positions of the preset rebar planting, and cut a flow groove on the external bricks corresponding to the rebar planting groove on the upper wall of the wall hole. One end of the flow groove is connected to the rebar planting groove, and the other end of the flow groove is provided on the outer surface of the wall; S3. Sleeve the locking piece on the rebar through the central hole, and tilt the rebar into the upper and lower two rebar planting grooves through the flow groove, check the position of the rebar and make temporary support and fixation; S4. Pour mixed mortar into the rebar planting groove on the lower wall of the wall hole, and fix the rebar after the mixed mortar solidifies; S5. Layer by layer, build bricks from bottom to top to the middle of the wall hole. Each layer of bricks has a cavity for accommodating the rebar. Drill a through-wall hole at the middle of the inner side wall of the wall hole corresponding to the position of the rebar. The through-wall hole penetrates the wall, and fix one end of the wall connecting piece through the through-wall hole to the wall; S6. Build the brick layer in the middle of the wall hole, adjust the position of the locking piece into the cavity of the brick, and then fix the locking piece to the brick. After the locking piece is fixed to the brick, make a fixed connection with the wall connecting piece through the connecting piece; S7. Continue to build bricks layer by layer upward until the wall hole is completely filled and the brick eaves are erected completely. Pour the mixed mortar into the rebar planting groove on the upper wall of the wall hole and the cavity of the topmost layer of bricks through the flow groove; S8. After the mixed mortar solidifies, repair the outer surface of the flow groove with brick powder.

2. A wall reinforcement method for repairing deteriorated brick eaves of historical building exterior walls according to claim 1, characterized in that: The length of the rebar satisfies the formula L + S < G < L + 2S, where L is the height of the wall hole, S is the depth of the rebar planting groove, and G is the length of the rebar.

3. A wall reinforcement method for repairing deteriorated brick eaves of a historical building exterior wall according to claim 2, characterized in that: The length of the rebar satisfies the formula L + S + A < G < L + 2S, where A is the depth of the flow groove.

4. A wall reinforcement method for repairing deteriorated brick eaves of a historical building exterior wall according to claim 1, characterized in that: The rebar is a threaded rebar, and the cavity is square in cross-section.

5. A wall reinforcement method for repairing deteriorated brick eaves of historical building exterior walls according to claim 4, characterized in that: The locking piece is a four-claw nut. The four-claw nut includes a central hole, three fixing claws and a connecting rod. The central hole is provided with an internal thread matching the external thread of the threaded rebar. The three fixing claws and a connecting rod are evenly distributed at equal intervals on the outer wall of the central hole. The fixing claw includes a screw rod and a supporting nut. One end of the connecting rod not connected to the central hole is provided with a connecting hole, and the central axis of the connecting hole is parallel to the central axis of the threaded rebar.

6. A wall reinforcement method for repairing deteriorated brick eaves of a historical building exterior wall according to claim 5, characterized in that: The wall connecting piece includes a fixing hole, a wall rod and a fixing nut. The wall rod passes through the wall through the wall hole. The fixing hole is provided at one end of the wall rod close to the wall hole. The central axis of the fixing hole is parallel to the central axis of the wire steel bar. An external thread is provided at the other end of the wall rod. The wall connecting piece is fixed to the wall through the fixing nut. 上。 7. A wall reinforcement method for repairing deteriorated brick eaves of a historical building exterior wall according to claim 6, characterized in that: The connecting piece is a U-shaped rebar.

8. A wall reinforcement method for repairing deteriorated brick eaves of a historical building exterior wall according to claim 7, characterized in that: In the step S6, the method of adjusting the position of the locking piece into the cavity of the brick, then fixing the locking piece to the brick, and making a fixed connection with the wall connecting piece through the connecting piece after the locking piece is fixed to the brick specifically includes the following steps: S61. Rotate the locking piece until the whole locking piece is inside the cavity, and ensure that the connecting rod is perpendicular to the side wall of the wall hole. At this time, the screw rods of the three fixing claws are respectively perpendicular to the other three side walls of the cavity; S62. Rotate the supporting nut outward until the supporting nut is in close contact with the outer wall of the cavity, so that the locking piece is fixedly supported on the brick; S63. Make a fixed connection between the locking piece and the wall connecting piece by passing the two ends of the U-shaped rebar through the connecting hole and the fixing hole respectively; S64. Rotate the fixing nut until the locking piece is firmly fixed to the wall connecting piece.

9. A wall reinforcement method for repairing deteriorated brick eaves of a historical building exterior wall according to claim 6, characterized in that: The wall connecting member further comprises a steel plate and a combined gasket, wherein the steel plate and the combined gasket are located between the fixing nut and the wall, and the thickness of the steel plate is 5 mm.

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