CN114809710B - Old wall structure after ancient building repair and strengthening and reinforcing method thereof - Google Patents
Old wall structure after ancient building repair and strengthening and reinforcing method thereof Download PDFInfo
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- CN114809710B CN114809710B CN202210674080.3A CN202210674080A CN114809710B CN 114809710 B CN114809710 B CN 114809710B CN 202210674080 A CN202210674080 A CN 202210674080A CN 114809710 B CN114809710 B CN 114809710B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/08—Improving by compacting by inserting stones or lost bodies, e.g. compaction piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
- E04C5/04—Mats
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
- E04G21/26—Strutting means for wall parts; Supports or the like, e.g. for holding in position prefabricated walls
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0203—Arrangements for filling cracks or cavities in building constructions
- E04G23/0211—Arrangements for filling cracks or cavities in building constructions using injection
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
- E04G23/0229—Increasing or restoring the load-bearing capacity of building construction elements of foundations or foundation walls
Abstract
The invention discloses an old wall structure after ancient building repair and a centralizing and reinforcing method thereof, the structure comprises an old wall body and an original foundation, the old wall body comprises an inner wall body, an outer wall body and a broken brick sandwich layer, a plurality of vertical reinforcing piles and inclined reinforcing piles are arranged at intervals on two sides of the original foundation, a reinforcing foundation is arranged on the inner wall body, and the bottom of the reinforcing foundation is connected with the original foundation through a supporting piece; the method comprises the steps of original foundation reinforcement, old wall reinforcement, erection of a centralizing and reinforcing device, centralizing and grouting of the old wall and reinforcing of the old wall. The device simple structure, the construction loading and unloading of being convenient for, the stability of righting is good, and is adjusted conveniently, and this method realizes the wall body inside and outside synchronous righting, has improved the whole stability of the old wall body after righting, has strengthened the holistic wholeness of wall body.
Description
Technical Field
The invention relates to the technical field of old wall reconstruction, in particular to an old wall structure after repairing an ancient building with broken brick filling sandwich walls and a centralizing and reinforcing method thereof.
Background
In some ancient urban walls or ancient building wall structures in China, some walls are sandwich wall structures with broken bricks filled in the outside brickwork, the foundation of the wall is shallow, and the phenomena of inclination, askew, distortion and bulge can occur due to the long-term repair. The walls have a certain historical value, and the historical meaning and cultural relic value of the corresponding building group can be reduced when the walls are removed and rebuilt, so that the walls need to be corrected. The existing repairing method generally adopts a single-side back-jacking method, namely, one side of a wall body is supported by a supporting device, and force is applied to an inclined part of the wall body by an adjusting device so that the wall body is displaced to realize the centralizing effect, but the method cannot adapt to a wall body structure with broken brick sandwiches, and the wall body collapse is easily caused when external force is applied due to weak connection strength of the whole structure of the broken brick sandwiches, so that centralizing difficulty is increased.
Disclosure of Invention
The invention aims to provide an old wall structure after repair of an ancient building and a centralizing and reinforcing method thereof.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the old wall structure after the ancient building is repaired comprises an old wall body and an original foundation, wherein the old wall body is arranged on the original foundation, the old wall body comprises an inner wall body, an outer wall body and a broken brick sandwich layer, the broken brick sandwich layer is arranged between the inner wall body and the outer wall body, a plurality of vertical reinforcing piles are arranged at two sides of the original foundation at intervals, oblique reinforcing piles are arranged at the outer sides of the vertical reinforcing piles at intervals, and the oblique reinforcing piles at two sides of the original foundation are integrally arranged in a V shape; the inner wall body is provided with a reinforced foundation which is L-shaped, the inner wall body is provided with a transverse installation groove, one end of the reinforced foundation is fixedly arranged on the transverse installation groove, and the bottom of the reinforced foundation is connected with the original foundation through a supporting piece; the side of the inner side wall body is provided with a plurality of vertical support columns, the vertical support columns are in an inverted T shape, the old wall body is provided with a plurality of through grooves, one end of the bottom of each vertical support column penetrates through the through grooves to be located on the outer side of the outer side wall body, and the vertical support columns are fixedly connected with the old wall body through reinforcing walls.
Preferably, the plurality of vertical reinforcing piles arranged on the same side of the old wall body are arranged at equal intervals in a linear mode, the plurality of inclined reinforcing piles arranged on the same side of the old wall body are also arranged at equal intervals in a linear mode, and the inclined reinforcing piles are located between two adjacent vertical reinforcing piles.
Preferably, the interval between two adjacent vertical reinforcement piles is 800-1200 mm, and the interval between two adjacent oblique reinforcement piles is 800-1200 mm; the distance between the vertical reinforcing piles and the inner wall body or the outer wall body on the same side of the vertical reinforcing piles is 400-600 mm; the distance between the oblique reinforcing pile and the inner wall or the outer wall on the same side is 800-1200 mm.
Preferably, the reinforced foundation is a frame structure with an L-shaped vertical section formed by splicing a plurality of steel bars, and concrete is poured in the frame structure.
A strengthening and reinforcing method for old wall structures after ancient architecture repair comprises the following steps:
firstly, reinforcing an original foundation, digging grouting pore canals on two sides of an old wall body, and pouring slurry into the grouting pore by using grouting equipment, wherein the slurry is cement slurry cement (the ratio is 1:0.5), 5% water glass is doped into each cubic slurry, the grouting process is divided into two times, and the grouting time interval of the two times is 4-6 hours;
reinforcing an old wall body, installing a reinforced foundation below the ground elevation of an inner wall body, chiseling a transverse installation groove on the inner wall body, and installing the reinforced foundation on the transverse installation groove through steel bars;
installing a centralizing and reinforcing device, wherein the centralizing and reinforcing device comprises an inclined strut centralizing mechanism and an auxiliary supporting mechanism; the method comprises the steps that a first support frame is installed on an inner side wall body, a second support frame is installed on an outer side wall body, a plurality of auxiliary support mechanisms are arranged on one side of the first support frame at intervals, and a plurality of diagonal bracing centering mechanisms are arranged on one side of the second support frame at intervals; the inclined support righting mechanism comprises a support pile, a first adjustable support rod and a second adjustable support rod, one end of the support pile is fixedly arranged on the ground, one end of the first adjustable support rod is hinged to the support pile, a first U-shaped support piece is movably arranged at the other end of the first adjustable support rod, and the first U-shaped support piece is arranged on the second support frame; one end of the second adjustable supporting rod is hinged to the supporting pile, a second U-shaped supporting piece is movably arranged at the other end of the second adjustable supporting rod, and the second U-shaped supporting piece is arranged on the second supporting frame; the auxiliary supporting mechanism comprises a vertical supporting frame, an adjusting sleeve rod, a spring and a T-shaped ejector rod, wherein a plurality of threaded holes are formed in the vertical supporting frame, the adjusting sleeve rod is arranged on the threaded holes, the spring is arranged in the adjusting sleeve rod, a supporting ring is arranged on the T-shaped ejector rod, one end of the T-shaped ejector rod is arranged in the spring, the spring is extruded between the supporting ring and the end part of the adjusting sleeve rod, and the other end of the T-shaped ejector rod is propped against the first supporting frame; a first adjustable screw rod is arranged on the first adjustable supporting rod, and a second adjustable screw rod is arranged on the second adjustable supporting rod;
step four, centralizing and grouting the old wall body, arranging grouting holes on the old wall body at intervals, and grouting the old wall body for the first time from top to bottom through the grouting holes, wherein the first grouting is non-pressure grouting; centering is carried out 20-30 h after the first grouting, and the wall body is centered for the first time by adjusting the centering reinforcement device in the third step; performing secondary grouting on the old wall body from top to bottom after the primary centering is finished, wherein the secondary grouting pressure is 0.5MPa, and performing secondary centering after 20-30 h after the primary grouting is finished; thirdly grouting the old wall body from top to bottom after the second centering is finished, wherein the pressure of the second grouting is 0.5MPa, and carrying out third centering after 20-30 hours after the third grouting is finished; measuring the verticality of the wall body, if the verticality of the wall body does not meet the requirement, repeating grouting and centralizing, and if the verticality of the wall body does not meet the requirement, carrying out final grouting on the old wall body, wherein the grouting pressure is 1MPa;
fifthly, reinforcing an old wall body, digging a through groove in the bottom of the old wall body, and mounting a supporting seat at the bottom of the vertical supporting frame in the third step, wherein one end of the supporting seat penetrates through the through groove; the old wall body is provided with tie bars; building templates before two adjacent vertical support frames, pouring concrete between the templates and the old wall body to form a reinforced wall body, and simultaneously, performing concrete pouring on the vertical support frames to form the vertical support columns, so that the vertical support frames, the old wall body and the reinforced wall body are connected into a whole; and (5) plastering and decorating after pouring is finished, so as to form the polymer cement mortar plastering layer.
Preferably, the grouting device in the first step is a hollow circular tube with a conical sharp corner, and a plurality of grouting holes are formed in the hollow circular tube at intervals; the pressure of the first grouting is 0.5MPa, and the pressure of the second grouting is 2MPa.
Preferably, in the fourth step, the inclination angle of the old wall body is adjusted by not more than 3 degrees each time when the old wall body is righted.
Preferably, the thickness of the polymer cement mortar plastering in the fifth step is 30 mm-50 mm, and the arrangement mode of the tie bars is plum blossom arrangement with 600 mm-600 mm intervals.
Preferably, in the fifth step, a step-shaped mounting hole is drilled in the old wall body, a T-shaped connecting steel bar frame is mounted in the mounting hole, the T-shaped connecting steel bar frame is poured on the old wall body and the vertical supporting frame by using concrete, and then the outer wall body is supplemented by using bricks.
Preferably, the thickness of the reinforced wall body is not more than one half of the thickness of the vertical support column.
According to the invention, the vertical reinforcing piles and the inclined reinforcing piles arranged on the two sides of the original foundation can play a role in reinforcing the original foundation, so that the foundation is prevented from being limited or inclined again, and the overall stability of the old wall is further improved. The side direction bearing capacity of wall body bottom is improved to the reinforcement ground that sets up on the one hand, prevents that the wall body from taking place the slope, and on the other hand consolidates the ground and links to each other with original ground, has increased the width of ground, has improved the bearing capacity of ground, provides a stable base for old wall. The vertical support column that sets up and the wall body fixed connection after righting consolidates the support to the wall body after righting, improves the stability of wall body, and the bottom one end of vertical support column passes the wall body for the wall body pushes down the bottom of vertical support column, improves the joint strength between them. The strengthening device that sets up adopts one side top, the supplementary extruded mode of opposite side to right in step old wall both sides, guarantees the stability of old wall overall structure, adopts to right and the operation of the mode that grouting alternately goes on, fixes old wall inside sandwich broken brick through the slip casting when making it loose when right for old wall bulk connection is more compact, avoids taking place the local phenomenon of collapsing. The vertical support column, the reinforced wall body and the outer side of the old wall body are connected, the tie bars and the T-shaped connecting reinforcement frame are connected in an internal connection mode, so that the protection of the old wall is realized, the integral strength of the old wall is improved, the thickening degree of the wall body is low, repair materials are saved, and the defect that the occupied area of the repaired wall body is large is overcome.
Drawings
FIG. 1 is a schematic diagram of a local structure of an old wall reinforcement repair of the invention;
FIG. 2 is a schematic diagram of the grouting equipment structure of the present invention;
FIG. 3 is a schematic plan view of the grouting of the present invention;
FIG. 4 is a schematic view of the structure of the righting and reinforcing device of the present invention;
FIG. 5 is an enlarged schematic view of a partial structure of the present invention;
FIG. 6 is a schematic view of a local structure of the old wall after repair according to the invention;
in the figure: 1. old wall body; 2. an original foundation; 3. reinforcing the foundation; 4. a transverse mounting groove; 5. a support; 6. a vertical support column; 7. a diagonal bracing righting mechanism; 8. an auxiliary supporting mechanism; 9. a first support frame; 10. a second support frame; 11. an inner wall; 12. an outer wall; 13. crushing a brick sandwich layer; 14. vertical reinforcement piles; 15. obliquely reinforcing piles; 16. grouting holes; 18. reinforcing the wall; 19. a tie bar; 20. t-shaped connecting steel bar frames; 21. grouting equipment; 70. supporting piles; 71. a first adjustable brace; 72. a second adjustable brace; 73. a first U-shaped support; 74. a second U-shaped support; 75. a first adjustable screw; 76. a second adjustable screw; 80. a vertical support frame; 81. adjusting the loop bar; 82. a spring; 83. t-shaped ejector rod; 84. a support ring; 85 pressure sensor.
Description of the embodiments
The invention is further described below with reference to the accompanying drawings:
the old wall structure after ancient building repair as shown in fig. 1-6 comprises an old wall body 1 and an original foundation 2, wherein the old wall body 1 is piled up above the original foundation 2, the old wall body 1 comprises an inner wall body 11, an outer wall body 12 and a broken brick sandwich layer 13, the broken brick sandwich layer 13 is filled between the inner wall body 11 and the outer wall body 12, a plurality of vertical reinforcing piles 14 are arranged at intervals on two sides of the original foundation, a plurality of inclined reinforcing piles 15 are arranged at intervals on the outer sides of the vertical reinforcing piles 14, the inclined reinforcing piles 15 on two sides of the original foundation 2 are integrally arranged in a V shape, and the inclined reinforcing piles 15 on two sides are symmetrically arranged about the center of the old wall body 1. In one embodiment, the plurality of vertical reinforcing piles 14 arranged on the same side of the old wall body 1 are arranged at equal intervals in a linear manner, the plurality of inclined reinforcing piles 15 arranged on the same side of the old wall body 1 are also arranged at equal intervals in a linear manner, and the inclined reinforcing piles 15 are positioned at positions outside the middle of the two adjacent vertical reinforcing piles 14. In one embodiment, the spacing between two adjacent vertical reinforcing piles 14 is 800mm to 1200mm, the spacing between two adjacent diagonal reinforcing piles 15 is 800mm to 1200mm, and in one preferred embodiment, the spacing between two adjacent vertical reinforcing piles 14 is 1000mm, and the spacing between two adjacent diagonal reinforcing piles 15 is 1000mm. The distance between the vertical reinforcing piles 14 and the inner wall 11 or the outer wall 12 on the same side is 400-600 mm, and the distance between the inclined reinforcing piles 15 and the inner wall 11 or the outer wall 12 on the same side is 800-1200 mm. In a more preferred embodiment, the distance between the vertical reinforcing piles 14 and the inner wall 11 or the outer wall 12 on the same side is 500mm, and the distance between the diagonal reinforcing piles 15 and the inner wall 11 or the outer wall 12 on the same side is 1000mm.
The reinforced foundation 3 is fixedly installed on the inner side wall 11 and is located at a position below the ground elevation, the reinforced foundation 3 is L-shaped, in one embodiment, the reinforced foundation 3 is a frame structure with an L-shaped vertical tangential plane formed by welding and fixing a plurality of reinforcing steel bars, concrete is poured in the frame structure, a transverse installation groove 4 is chiseled on the inner side wall 11, one end of the reinforced foundation 3 is fixedly installed on the transverse installation groove 4 through the reinforcing steel bars, the transverse installation groove 4 and the reinforced foundation 3 are integrally connected through the poured concrete and the reinforcing steel bars inside the transverse installation groove, and the bottom of the reinforced foundation 3 and the original foundation 2 are fixedly connected through supporting pieces 5. The side of the inner side wall 11 is linearly provided with a plurality of vertical support columns 6 at intervals, the vertical support columns 6 are in an inverted T shape, a plurality of through grooves are drilled on the old wall 1, one end of the bottom of each vertical support column 6 penetrates through the through groove to be located outside the outer side wall 12, a reinforced wall 18 is poured between the vertical support column 6 and the old wall 1, and the reinforced wall 18, the vertical support columns 6 and the old wall 1 are integrally connected.
The method for strengthening and reinforcing the old wall structure after the ancient architecture is repaired as shown in fig. 1-6 comprises the following steps:
step one, the original foundation 2 is reinforced, grouting pore canals are dug at the ground elevations on the two sides of the old wall body 1, grouting equipment 21 is used for pouring slurry into the grouting pores, the slurry is cement slurry cement (the ratio is 1:0.5), 5% water glass is doped into each cubic slurry, the grouting process is divided into two grouting steps, the grouting time interval of the two grouting steps is 4-6 h, and in one embodiment, the grouting time interval of the two grouting steps is 5h. The slurry solidifies to form vertical reinforcing piles 14 and diagonal reinforcing piles 15, and in one embodiment, the vertical reinforcing piles 14 have a length of 6m and the diagonal reinforcing piles 15 have a length of 2.5m. In a preferred embodiment, the grouting device 21 is a hollow circular tube with conical sharp corners, a plurality of grouting holes 16 are arranged on the hollow circular tube at intervals, and the grouting device 21 is connected with a grouting pump or a grouting tank at the other end, so that grouting liquid can be poured into grouting pore channels through the grouting holes 16. The pressure of the first grouting is 0.5MPa, and the pressure of the second grouting is 2MPa.
And secondly, reinforcing the old wall body 1, installing a reinforced foundation 3 below the ground elevation of the inner wall body 11, firstly punching a transverse installation groove 4 on the inner wall body 11, and fixedly installing the reinforced foundation 3 on the transverse installation groove 4 through steel bars and concrete.
Step three, installing a centralizing and reinforcing device, wherein the centralizing and reinforcing device comprises a diagonal bracing centralizing mechanism 7 and an auxiliary supporting mechanism 8; the first support frame 9 is fixedly arranged on the inner side wall 11, the second support frame 10 is fixedly arranged on the outer side wall 12, a plurality of auxiliary support mechanisms 8 are linearly arranged at equal intervals on one side of the first support frame 9, and a plurality of diagonal bracing and righting mechanisms 7 are linearly arranged at equal intervals on one side of the second support frame 10. In one embodiment, the first supporting frame 9 and the second supporting frame 10 are formed by splicing rods which are arranged in a transverse and longitudinal staggered mode.
The diagonal bracing and righting mechanism 7 comprises a supporting pile 70, a first adjustable supporting rod 71 and a second adjustable supporting rod 72, one end of the supporting pile 70 is fixedly installed on the ground, and when the diagonal bracing and righting mechanism is specifically implemented, the supporting pile 70 can be fixedly installed through a concrete structure poured under the ground. One end of the first adjustable stay bar 71 is hinged on the top of the support pile 70 through a pin shaft, the other end of the first adjustable stay bar 71 is hinged with a first U-shaped support piece 73 through a pin shaft, and the opening end of the first U-shaped support piece 73 is clamped on the second support frame 10. One end of the second adjustable stay 72 is hinged on the top of the support pile 70 through a pin shaft, the other end of the second adjustable stay 72 is hinged with a second U-shaped support 74 through a pin shaft, and the open end of the second U-shaped support 74 is clamped on the second support frame 10. The first adjustable supporting rod 71 is provided with a first adjustable screw rod 75, the second adjustable supporting rod 72 is provided with a second adjustable screw rod 76, a user manually adjusts the first adjustable screw rod 75 to enable the first adjustable supporting rod 71 to be lengthened or shortened, and manually adjusts the second adjustable screw rod 76 to enable the second adjustable supporting rod 72 to be lengthened or shortened, so that inclination adjustment of the old wall body 1 is achieved.
The auxiliary support mechanism 8 comprises a vertical support frame 80, an adjusting sleeve rod 81, a spring 82 and a T-shaped ejector rod 83, wherein a plurality of threaded holes are vertically formed in the vertical support frame 80 at equal intervals, external threads matched with the threaded holes are formed in the outer side of the adjusting sleeve rod 81, the adjusting sleeve rod 81 is connected to the threaded holes through threads, a cylindrical hollow cavity is formed in the adjusting sleeve rod 81, an annular retainer ring is arranged at one end of the adjusting sleeve rod 81, an opening is formed in the other end of the adjusting sleeve rod, and the spring 82 is arranged in the cylindrical hollow cavity. The T-shaped ejector rod 83 is formed by welding a cylindrical steel pipe and a square pipe in a T shape, a supporting ring 84 is fixedly installed on the cylindrical steel pipe, one end of the cylindrical steel pipe is inserted into the spring 82, two ends of the spring 82 are extruded between the annular retainer ring and the supporting ring 84, and the other end of the T-shaped ejector rod 83 is propped against the first supporting frame 9. In one embodiment, a pressure sensor 85 is installed between the annular retainer ring of the adjusting sleeve rod 81 and the spring 82, the pressure sensor 85 can display the extrusion force of the old wall body 1 borne by the T-shaped ejector rod 83 in real time, and a constructor knows the local stress condition of the old wall body 1 according to the numerical value of the pressure sensor 85, so that the understanding of the overall stability of the old wall body 1 is facilitated. Of course, the deformation of the old wall body 1 can be calculated according to the distance between the end part of the T-shaped ejector rod 83 and the vertical supporting frame 80, so that the righting operation can be conveniently adjusted. When the auxiliary synchronous righting operation for the inner wall 11 is realized, the pressure of the spring 82 is regulated by regulating the number of screw connection turns of the regulating sleeve rod 81 on the screw hole. In a preferred embodiment, a plurality of displacement sensors can be installed on the vertical support frame 80, and the distance between the old wall body 1 and the vertical support frame 80 can be known in real time through the displacement sensors, so that the wall body direction is prevented from being inclined due to excessive righting operation.
And fourthly, righting and grouting the old wall body 1, fixedly installing a fixed pile at the top of the outer wall body 12, and hanging a plumb bob on the fixed pile, wherein the plumb bob is used for measuring the perpendicularity of the old wall body 1 in the construction process. Grouting holes are arranged on the wall body 1 of the old wall at intervals, the grouting holes are arranged in a 1000 mm-1000 mm plum blossom shape, the old wall body 1 is subjected to primary grouting from top to bottom through the grouting holes, the primary grouting adopts pressureless grouting, and grouting slurry in the step one is adopted; and (3) carrying out centralizing operation 20-30 hours after the first grouting, and carrying out first centralizing operation on the old wall body 1 by adjusting the centralizing and reinforcing device in the third step. And (3) performing secondary grouting on the old wall body 1 from top to bottom after the primary centering is finished, wherein the secondary grouting pressure is 0.5MPa, and performing secondary centering operation 20-30 hours after the primary grouting. And after the second centering is finished, performing third grouting on the old wall body 1 from top to bottom, wherein the pressure of the second grouting is 0.5MPa, and performing third centering operation after 20-30 hours after the third grouting is finished. And measuring the verticality of the old wall body 1, if the verticality does not meet the requirement, repeating grouting and centralizing operation repeatedly, and if the verticality meets the requirement, carrying out final grouting on the old wall body 1, wherein the grouting pressure is 1MPa. In the concrete implementation process, the righting operation effect is good after grouting for 24 hours. In a preferred embodiment, the old wall 1 is tilted no more than 3 ° each time it is centered.
And fifthly, after the centralizing is finished, the first supporting frame 9, the second supporting frame 10, the diagonal bracing centralizing mechanism 7 and the auxiliary supporting mechanism 8 are disassembled, and the vertical supporting frame 80 structure is reserved. The old wall body 1 is reinforced, through grooves are formed in the bottom of the old wall body 1 at intervals, the number and positions of the through grooves correspond to those of the auxiliary supporting mechanisms 8, supporting seats are fixedly arranged at the bottom of the vertical supporting frames 80 in the third step, the supporting seats and the vertical supporting frames 80 are integrally cast through concrete, one ends of the supporting seats penetrate through the through grooves and are located on the outer side of the outer wall body 12, and in one embodiment, the supporting seats are of a cube structure with lengths, widths and heights of 1500mm by 300 mm.
The tie bars 19 are fixedly installed on the old wall body 1, in one embodiment, the tie bars 19 are arranged in a plum blossom mode with a spacing of 600mm x 600mm, one end of each tie bar 19 is poured inside the old wall body 1, and the other end of each tie bar 19 is located on the outer side face of the inner wall body 11. Fixing the vertical support frames 80 and the old wall body 1, building templates before two adjacent vertical support frames 80, placing a reinforced structure between the templates and the inner wall body 11, pouring concrete to form a reinforced wall body 18, and simultaneously pouring concrete to the vertical support frames 80 to form a vertical support column 6, wherein the wall body is an integrated structure of the vertical support column 6, the old wall body 1 and the reinforced wall body 18 after pouring is completed. In a preferred embodiment, stepped mounting holes are drilled in the old wall 1, wherein larger diameter holes are drilled in the outside wall 12, and relatively smaller diameter holes extend through the old wall 1, T-shaped connecting rebar frames 20 are installed in the mounting holes, the T-shaped connecting rebar frames 20 are poured onto the old wall 1 and the vertical support frame 80 using concrete, and the outside wall 12 is leveled using bricks. And after pouring, plastering and decorating the cement wall surface. In a preferred embodiment, the thickness of the reinforcing wall 18 is no more than one-half the thickness of the vertical support columns 6, and in a more preferred embodiment, the thickness of the reinforcing wall 18 is one-third the thickness of the vertical support columns 6.
The reinforcement wall 18 is entirely plastered on the outer side and the vertical support columns 6 by arranging a reinforcing mesh in the polymer cement mortar, and the reinforcement wall 18 is entirely plastered on the outer side and the vertical support columns 6 by the polymer cement mortar plaster, in one embodiment, the thickness of the polymer cement mortar plaster is 30mm to 50mm, and in one embodiment, the thickness of the polymer cement mortar plaster is 40mm.
The above embodiments are only a few descriptions of the inventive concept and implementation, and are not limited thereto, and the technical solutions without substantial transformation remain within the scope of protection under the inventive concept.
Claims (9)
1. The utility model provides a old wall structure's after ancient building is repaired strengthening reinforcement method, old wall structure after ancient building is repaired includes old wall body and original ground, old wall body sets up on the original ground, its characterized in that: the old wall body comprises an inner wall body, an outer wall body and a broken brick sandwich layer, wherein the broken brick sandwich layer is arranged between the inner wall body and the outer wall body, a plurality of vertical reinforcing piles are arranged at intervals on two sides of an original foundation, oblique reinforcing piles are arranged at intervals on the outer sides of the vertical reinforcing piles, and the oblique reinforcing piles on two sides of the original foundation are arranged in a V shape overall; the inner wall body is provided with a reinforced foundation which is L-shaped, the inner wall body is provided with a transverse installation groove, one end of the reinforced foundation is fixedly arranged on the transverse installation groove, and the bottom of the reinforced foundation is connected with the original foundation through a supporting piece; the side surface of the inner side wall body is provided with a plurality of vertical support columns which are in an inverted T shape, the old wall body is provided with a plurality of through grooves, one end of the bottom of each vertical support column penetrates through each through groove to be positioned at the outer side of the outer side wall body, and the vertical support columns are fixedly connected with the old wall body through reinforcing walls;
the righting and reinforcing method comprises the following steps:
firstly, reinforcing an original foundation, digging grouting pore canals on two sides of an old wall body, and pouring slurry into the grouting pore by using grouting equipment, wherein the slurry is cement slurry water-cement ratio of 1:0.5, 5% water glass is doped into each cubic slurry, the grouting process is divided into two times, and the grouting time interval of the two times is 4-6 hours;
reinforcing an old wall body, installing a reinforced foundation below the ground elevation of an inner wall body, chiseling a transverse installation groove on the inner wall body, and installing the reinforced foundation on the transverse installation groove through steel bars;
installing a centralizing and reinforcing device, wherein the centralizing and reinforcing device comprises an inclined strut centralizing mechanism and an auxiliary supporting mechanism; the method comprises the steps that a first support frame is installed on an inner side wall body, a second support frame is installed on an outer side wall body, a plurality of auxiliary support mechanisms are arranged on one side of the first support frame at intervals, and a plurality of diagonal bracing centering mechanisms are arranged on one side of the second support frame at intervals; the inclined support righting mechanism comprises a support pile, a first adjustable support rod and a second adjustable support rod, one end of the support pile is fixedly arranged on the ground, one end of the first adjustable support rod is hinged to the support pile, a first U-shaped support piece is movably arranged at the other end of the first adjustable support rod, and the first U-shaped support piece is arranged on the second support frame; one end of the second adjustable supporting rod is hinged to the supporting pile, a second U-shaped supporting piece is movably arranged at the other end of the second adjustable supporting rod, and the second U-shaped supporting piece is arranged on the second supporting frame; the auxiliary supporting mechanism comprises a vertical supporting frame, an adjusting sleeve rod, a spring and a T-shaped ejector rod, wherein a plurality of threaded holes are formed in the vertical supporting frame, the adjusting sleeve rod is arranged on the threaded holes, the spring is arranged in the adjusting sleeve rod, a supporting ring is arranged on the T-shaped ejector rod, one end of the T-shaped ejector rod is arranged in the spring, the spring is extruded between the supporting ring and the end part of the adjusting sleeve rod, and the other end of the T-shaped ejector rod is propped against the first supporting frame; a first adjustable screw rod is arranged on the first adjustable supporting rod, and a second adjustable screw rod is arranged on the second adjustable supporting rod;
step four, centralizing and grouting the old wall body, arranging grouting holes on the old wall body at intervals, and grouting the old wall body for the first time from top to bottom through the grouting holes, wherein the first grouting is non-pressure grouting; centering is carried out 20-30 h after the first grouting, and the wall body is centered for the first time by adjusting the centering reinforcement device in the third step; performing secondary grouting on the old wall body from top to bottom after the primary centering is finished, wherein the secondary grouting pressure is 0.5MPa, and performing secondary centering after 20-30 h after the primary grouting is finished; performing third grouting on the old wall body from top to bottom after the second centering is finished, wherein the pressure of the third grouting is 0.5MPa, and performing third centering after 20-30 hours after the third grouting is finished; measuring the verticality of the wall body, if the verticality of the wall body does not meet the requirement, repeating grouting and centralizing, and if the verticality of the wall body does not meet the requirement, carrying out final grouting on the old wall body, wherein the grouting pressure is 1MPa;
fifthly, reinforcing an old wall body, digging a through groove in the bottom of the old wall body, and mounting a supporting seat at the bottom of the vertical supporting frame in the third step, wherein one end of the supporting seat penetrates through the through groove; the old wall body is provided with tie bars; building templates before two adjacent vertical support frames, pouring concrete between the templates and the old wall body to form a reinforced wall body, and simultaneously, performing concrete pouring on the vertical support frames to form the vertical support columns, so that the vertical support frames, the old wall body and the reinforced wall body are connected into a whole; and (5) plastering and decorating after pouring is finished, so as to form the polymer cement mortar plastering layer.
2. The method for strengthening and reinforcing the old wall structure after repair of the ancient building according to claim 1, wherein the method comprises the following steps: the plurality of vertical reinforcement piles arranged on the same side of the old wall body are arranged at equal intervals in a linear mode, the plurality of inclined reinforcement piles arranged on the same side of the old wall body are also arranged at equal intervals in a linear mode, and the inclined reinforcement piles are located between two adjacent vertical reinforcement piles.
3. The method for strengthening and reinforcing the old wall structure after repair of the ancient building according to claim 2, wherein the method comprises the following steps: the interval between two adjacent vertical reinforcing piles is 800-1200 mm, and the interval between two adjacent oblique reinforcing piles is 800-1200 mm; the distance between the vertical reinforcing piles and the inner wall body or the outer wall body on the same side of the vertical reinforcing piles is 400-600 mm; the distance between the oblique reinforcing pile and the inner wall or the outer wall on the same side is 800-1200 mm.
4. The method for strengthening and reinforcing the old wall structure after repair of the ancient building according to claim 1, wherein the method comprises the following steps: the reinforced foundation is a frame structure with an L-shaped vertical tangential plane formed by splicing a plurality of steel bars, and concrete is poured in the frame structure.
5. The method for strengthening and reinforcing the old wall structure after repair of the ancient building according to claim 1, wherein the method comprises the following steps: the grouting equipment in the first step is a hollow circular tube with a conical sharp corner, and a plurality of grouting holes are formed in the hollow circular tube at intervals; the pressure of the first grouting is 0.5MPa, and the pressure of the second grouting is 2MPa.
6. The method for strengthening and reinforcing the old wall structure after repair of the ancient building according to claim 1, wherein the method comprises the following steps: and in the fourth step, the inclination angle of the old wall body is adjusted by not more than 3 degrees at each righting time.
7. The method for strengthening and reinforcing the old wall structure after repair of the ancient building according to claim 1, wherein the method comprises the following steps: the thickness of the polymer cement mortar plastering in the fifth step is 30-50 mm, and the arrangement mode of the tie bars is plum blossom arrangement with 600 mm-600 mm intervals.
8. The method for strengthening and reinforcing the old wall structure after repairing the ancient architecture according to claim 1 or 6, wherein the method comprises the following steps: step five, chiseled mounting holes are formed in the old wall body, T-shaped connecting steel bar frames are mounted in the mounting holes, the T-shaped connecting steel bar frames are poured on the old wall body and the vertical supporting frames by using concrete, and then the outer wall body is leveled by using bricks.
9. The method for righting and reinforcing the old wall structure after repair of the ancient building according to claim 7, wherein the method comprises the following steps: the thickness of the reinforced wall body is not more than half of the thickness of the vertical support column.
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| CN107893546A (en) * | 2017-11-24 | 2018-04-10 | 武汉冶建筑安装工程有限责任公司 | Ancient architecture wall righting method and system |
| CN108086343A (en) * | 2017-12-12 | 2018-05-29 | 上海建工建集团有限公司 | Overhanging type unilateral side wall mixed reinforcement and replacing structure and its construction method |
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| CN114033213A (en) * | 2021-12-15 | 2022-02-11 | 山西五建集团有限公司 | Method for reinforcing urn-city deformed wall |
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| US8590259B2 (en) * | 2011-02-14 | 2013-11-26 | Thomas Trinko | Method of straightening foundational walls |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107893546A (en) * | 2017-11-24 | 2018-04-10 | 武汉冶建筑安装工程有限责任公司 | Ancient architecture wall righting method and system |
| CN108086343A (en) * | 2017-12-12 | 2018-05-29 | 上海建工建集团有限公司 | Overhanging type unilateral side wall mixed reinforcement and replacing structure and its construction method |
| CN109083436A (en) * | 2018-08-30 | 2018-12-25 | 上海建为历保科技股份有限公司 | A kind of constructing structure method for Historical Block facade rebuilding |
| CN113006513A (en) * | 2021-02-05 | 2021-06-22 | 中铁十六局集团路桥工程有限公司 | Intelligent continuous wall deviation rectifying device and method for three-in-one soil foundation |
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