CN112211426B - Method for repairing historical building - Google Patents
Method for repairing historical building Download PDFInfo
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- CN112211426B CN112211426B CN202010937596.3A CN202010937596A CN112211426B CN 112211426 B CN112211426 B CN 112211426B CN 202010937596 A CN202010937596 A CN 202010937596A CN 112211426 B CN112211426 B CN 112211426B
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- 238000000034 method Methods 0.000 title claims abstract description 79
- 230000001681 protective effect Effects 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 239000011150 reinforced concrete Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000000717 retained effect Effects 0.000 claims 1
- 210000002435 tendon Anatomy 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 36
- 238000013467 fragmentation Methods 0.000 abstract description 3
- 238000006062 fragmentation reaction Methods 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 description 8
- 230000005484 gravity Effects 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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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
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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
- 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
- E04G23/0222—Replacing or adding wall ties
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- Structural Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses a repairing method of a historical building, which comprises a wall column replacement method, wherein when an existing structural floor slab needs to be replaced, a new structural floor slab replacement method is constructed through a new structural column of the wall column replacement method so as to remove and replace the new structural floor slab in each layer of the historical building; and when the existing structural floor slab does not need to be replaced, filling and constructing the dismantled existing structural floor slab part in each layer of the historical building. According to the invention, the first existing wall with a protection value is protected in an integrity way through the newly added structural columns and the newly added structural floors, so that the stability of the integral structure of the historical building can be ensured in the repairing construction process, and risks such as fragmentation, collapse and structural deformation are prevented.
Description
Technical Field
The invention relates to the technical field of building engineering, in particular to a method for repairing a historical building.
Background
Most of historical buildings are masonry structures such as bricks and stones, so that the existing historical buildings are poor in overall structural stability, potential safety hazards exist in both civil historical buildings and public historical buildings, and therefore the historical buildings need to be repaired. When the historical building is repaired, part of the existing masonry structures (such as building outer walls) of the historical building need to be completely reserved and cannot be dismantled due to high protection value and historical value; it is not possible to repair existing masonry structures that need to be maintained intact by means of partial or total demolition reconstruction. The local demolition and repair and the overall demolition and repair not only have high construction cost, but also cause substantial damage to the existing masonry structure of the historical building, thereby influencing the protection value and the historical value of the historical building. Therefore, how to repair historical buildings on the premise of not damaging masonry structures with protective values becomes a problem which needs to be solved in the field.
Disclosure of Invention
The invention aims to provide a method for repairing a historical building, which aims to solve the problem of repairing the historical building on the premise of not damaging the existing masonry structure with a protection value.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a method for repairing a historical building comprises the following steps:
the wall column replacement method comprises the following steps:
setting a historical building at the same position of each floor, wherein the historical building at least comprises a first existing wall with protective value and a detachable second existing wall, and a wall column replacement structure is arranged between the first existing wall and the second existing wall and is in contact with an existing structural floor of the historical building, so that the wall column replacement structure supports the existing structural floor; removing part of the wall structure of the second existing wall, integrally retaining the first existing wall to form a wall column replacement area on the removed area of the second existing wall, and removing part of the existing structural floor slabs in each layer of the historical building to expose the wall column replacement area on each layer of the existing structural floor slabs; constructing a reinforced concrete structure or a newly added structural column of a steel structure of the historical building in a wall column replacement region from a lower layer to an upper layer in sequence, and connecting the newly added structural column with a first existing wall body to complete wall column replacement of the historical building;
when the existing structural floor slabs need to be replaced, removing and replacing newly-added structural floor slabs in each layer of the historical building by a new and old structural floor slab replacement method; the new and old structure floor slab replacement method comprises the following steps:
the method comprises the following steps that firstly, existing structural floors of each layer of the historical building are sequentially dismantled from an upper layer to a lower layer, when the existing structural floors of the historical building are dismantled, a first structural part of a newly-added main beam is constructed on the layer through a newly-added structural column, the first structural part of the newly-added main beam structure is embedded into the newly-added structural column, and the upper plane of the first structural part of the newly-added main beam is flush with the upper plane of the newly-added structural column;
secondly, after all layers of existing structural floor slabs are removed and the first structural parts of the newly-added main beams of all layers are completed, constructing secondary beams on the first structural parts of the newly-added main beams of all layers; then, simultaneously constructing a second structure part of the newly-added main beam and a newly-added structure floor slab on each layer through a first structure part and a secondary beam of the newly-added main beam, sinking and embedding the newly-added structure floor slab on the newly-added main beam and the secondary beam, and connecting the newly-added structure floor slab with the first existing wall body to finish the replacement of the new and old structure floor slabs on all layers in the historical building;
and when the existing structural floor slab does not need to be replaced, filling and constructing the dismantled existing structural floor slab part in each layer of the historical building.
Furthermore, the method for repairing the historical building integrally removes the floor slab of the existing structure on the uppermost layer of the historical building through hoisting equipment; and cutting, chiseling or crushing and dismantling the existing structural floor slab below the uppermost layer.
Further, the method for repairing the historical buildings, provided by the invention, is used for dismantling the wall column replacement structure and the remained existing wall before or after the replacement of the floor slab of the new structure and the old structure is completed.
Further, according to the method for repairing the historical building, the newly added structural columns are connected with the first existing wall through anchoring parts or inserting ribs.
Further, the method for repairing a historical building, provided by the invention, comprises the following steps:
at least two horizontally disposed horizontal connectors;
the attachment connecting piece is arranged on the existing wall body; the horizontal connecting piece is arranged between the first existing wall body and the second existing wall body through the attached connecting piece.
Further, the method for repairing a historical building provided by the invention comprises the following steps:
step 1, constructing a wall-buried attachment connecting piece on a first existing wall body and a second existing wall body;
and 2, constructing horizontal connecting pieces between the attachment connecting pieces, and contacting the horizontal connecting pieces with the existing structural floor slabs of the historical building so as to support the existing structural floor slabs of the historical building through the horizontal connecting pieces.
Further, the present invention provides a method for repairing a historical building, wherein the attaching and connecting piece comprises:
the fixing device comprises two fixing plates and fasteners which vertically penetrate through the two fixing plates, wherein the fasteners penetrate through the existing wall body to enable the two fixing plates to be arranged on two sides of the existing wall body.
Further, according to the method for repairing the historical building provided by the invention, when the first existing wall body is intersected with the second existing wall body, the horizontal connecting pieces are connected with the first existing wall body to form a triangular structure, and the two horizontal connecting pieces are oppositely arranged on two sides of the second existing wall body; when the first existing wall body is parallel to the second existing wall body, the two horizontal connecting pieces are connected with the first existing wall body and the second existing wall body to form a square structure.
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
according to the method for repairing the historical building, the structural stability between the first existing wall and the second existing wall is guaranteed through the wall column replacement structure, so that the stability of the overall structure of the historical building is guaranteed, risks of cracking, collapsing, structural deformation and the like of the historical building in the repairing construction process are prevented, the gravity of the existing structural floor is borne in a mode that the wall column replacement structure is in contact with the existing structural floor, and the safety risks of deformation, cracking and collapse of the existing wall and the existing wall below the existing structural floor due to the gravity influence of the existing structural floor in the repairing construction process of the historical building are avoided.
The method for repairing the historical building provided by the invention comprises the steps of dismantling a local wall body of a second existing wall body which is not reserved on the premise of ensuring safe repairing construction through a wall column replacement structure, forming a communicated wall column replacement region in each layer of the historical building in a dismantling region of the second existing wall body and a dismantling part of an existing structural floor slab at a corresponding position of the existing structural floor slab, and constructing a newly-added structural column from the lower layer to the upper layer in the wall column replacement region, so that wall column replacement is completed, and the newly-added structural column is connected with the first existing wall body, so that the connection reliability and stability between the first existing wall body with a protective value and the newly-added structural column are improved, and the protective repairing construction is carried out on the first existing wall body of the historical building.
According to the method for repairing the historical building, provided by the invention, the newly-added structural floor is subjected to two-step secondary forming construction instead of one-step forming construction, and the first structural part of the newly-added main beam on the same layer can be connected with the first existing wall body, so that the structural stability is improved under the condition that the layer is lack of the structural floor. After the first structural part of the newly-increased main beam on the previous layer is constructed, the existing structural floor slab on the next layer can be dismantled and the first structural part of the newly-increased main beam on the next layer can be constructed without waiting for the hardness standard, so that the overall construction efficiency of the newly-increased structural floor slab can be improved. In addition, the newly added structural floor slab formed in the secondary forming mode in the embodiment of the invention can be used for constructing the floor slab part from top to bottom or from bottom to top. The limitation that the newly-added structural floor slab is constructed from top to bottom in one-step forming construction is broken, particularly, the second structural part of the newly-added main beam and the newly-added structural floor slab are constructed from top to bottom, the convenience of space operation is realized, and the construction efficiency can be further improved.
According to the method for repairing the historical building, the first existing wall with the protection value is protected by the newly added structural columns in the construction process of the wall column replacement method and the new and old structure floor replacement method, so that the problem of repairing and constructing the historical building on the premise of not damaging the existing masonry structures such as the first existing wall with the protection value is solved. The method is particularly suitable for repairing construction of existing wall bodies with protective values, such as external walls of historical buildings, which are kept in a complete way.
Drawings
Fig. 1 to 2 are flowcharts of a method for repairing a historic building according to an embodiment of the present invention;
FIG. 3 is a schematic view of an existing intersecting wall structure according to one embodiment of the present invention;
FIG. 4 is a schematic view of an embodiment of the present invention showing attachment of attachment elements to existing intersecting walls;
FIG. 5 is a schematic structural view of a horizontal connecting member disposed on an existing intersecting wall according to an embodiment of the present invention;
fig. 6 is a schematic structural view of a wall column replacement structure supporting an existing structural floor slab and removing a wall removal section according to an embodiment of the present invention;
fig. 7 is a schematic structural view of an embodiment of the present invention, in which wall-column replacement structures are disposed on both sides of an existing wall on upper and lower floors and a floor supporting the existing structure is provided;
FIG. 8 is a schematic top view of a partially removed floor slab with wall stud replacement areas exposed according to an embodiment of the present invention;
FIG. 9 is a schematic top view of a newly added structural column according to an embodiment of the present invention;
FIG. 10 is a schematic structural view of a filling construction of an existing structural floor without replacing the structural floor in an embodiment of the present invention;
FIG. 11 is a schematic structural view illustrating removal of an existing structural floor when replacement of the structural floor is required in accordance with an embodiment of the present invention;
FIG. 12 is a schematic view of the construction of the sub-floor portion of a newly added structural floor slab on the removed existing structural floor slab in accordance with an embodiment of the present invention;
FIG. 13 is a schematic view of the structure of the underfloor portion and the floor portion of the newly added structural floor slab constructed on the removed existing structural floor slab layer in one embodiment of the present invention
FIG. 14 is a schematic top view of a new structural floor slab with a wall stud replacement structure removed and a second existing wall left unretained in accordance with one embodiment of the present invention;
FIG. 15 is a schematic side view of an embodiment of the present invention illustrating the construction of an under-floor portion of an additional structural floor on an additional structural column;
FIG. 16 is a schematic side view of an embodiment of the present invention illustrating the construction of an additional structural floor slab on an additional structural column;
FIG. 17 is a schematic structural view of a wall stud replacement structure disposed between parallel existing walls according to an embodiment of the present invention;
FIG. 18 is a schematic structural view of a newly added structural column being constructed between parallel existing walls in accordance with an embodiment of the present invention;
fig. 19 is a schematic structural view illustrating a wall column replacement structure disposed on a single side of an existing wall body of an upper layer and a lower layer according to an embodiment of the present invention;
shown in the figure:
10. the main beam structure comprises a first existing wall body, a second existing wall body, a wall body removing section, a first existing wall body, a second existing wall body, a wall body removing section, a first horizontal connecting piece, a second horizontal connecting piece, a first attaching connecting piece, a second attaching connecting piece, a first fastening piece, a second fastening piece, a fixing plate, a first fixing plate, a second fixing plate, a first fixing plate, a second fixing plate, a second fixing plate, and a second fixing plate, a second fixing device, and a second fixing device, and a second fixing device, and a second structure.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures:
the embodiment of the invention takes a multilayer historical building as an example to describe the method for repairing the historical building in detail, in particular to the multilayer historical building with a top layer of a planar structure, but the method does not exclude the construction for repairing the historical building with the top layer of a non-planar structure.
Referring to fig. 1, an embodiment of the present invention provides a method for repairing a historical building, including:
referring to fig. 3 to 7 and 17 to 19, a wall-column replacement structure is constructed: setting a historical building to at least comprise a first existing wall 10 with protective value and a second removable existing wall 20 in the same position of each floor; a wall column replacement structure is provided between the first existing wall 10 and the second existing wall 20, and the wall column replacement structure is used for ensuring structural stability between the existing walls; the wall column replacement structure is in contact with an existing structural floor slab 50 of the historic building, so that the wall column replacement structure supports the existing structural floor slab 50; in which fig. 3 to 7 show a wall column replacement structure provided between crossing existing walls, and fig. 17 to 19 show a wall column replacement structure provided between parallel existing walls.
Referring to fig. 3 to 7 and 17 to 19, the wall stud replacement structure includes:
at least two horizontally disposed horizontal connectors 30;
the attachment connecting piece 40 is arranged on the existing wall body, namely the attachment connecting piece 40 is arranged on the first existing wall body 10 and the second existing wall body 20; the horizontal connection member 30 is disposed between the first existing wall 10 and the second existing wall 20 through the attachment connection member 40.
Referring to fig. 7 and 19, the attachment connector 40 includes: the fixing device comprises two fixing plates 42 and a fastening piece 41 vertically penetrating the two fixing plates 42, wherein the fastening piece 41 is used for penetrating through an existing wall body to arrange the two fixing plates 42 on two sides of the existing wall body.
Wherein the fastener 41 may be a double-headed bolt.
Referring to fig. 7 and 19, the horizontal connecting member 30 and the following connecting member 40 can be detachably connected by bolts, so that the wall column replacement structure can be recycled, and the purposes of energy saving and environmental protection are achieved. The fixing plate 42 of the attachment link 40 may be an angular steel plate at this time. That is, one side of the angle-shaped steel plate is fixed to the existing wall body by the stud bolts, and the other side of the angle-shaped steel plate is fixedly connected to the horizontal connection member 30 by the bolts. The horizontal connecting member 30 may be formed of i-steel or channel steel having a strong deformation resistance, so as to bear the weight of the existing structural floor slab 50 and prevent the safety of the existing structural floor slab 50 from being damaged or collapsed due to insufficient bearing capacity of the horizontal connecting member 30. The existing structural floor 50 may be exposed to the wall stud replacement area by partial chiseling or cutting to construct the additional structural stud 60 in the wall stud replacement area. Wherein the wall column replacement area needs to meet the space requirement of the reserved dowel bars of the lower part of the floor slab in the newly added structural column 60 and the newly added structural floor slab 80.
Referring to fig. 3 to 7 and 17 to 19, in a method for repairing a historical building according to an embodiment of the present invention, a method for setting a wall column replacement structure includes:
constructing a buried wall attachment connector 40 on the first existing wall 10 and the second existing wall 20;
and constructing the horizontal connecting members 30 between the attached connecting members 40, and contacting the horizontal connecting members 30 with the existing structural floor 50 of the historic building to support the existing structural floor 50 of the historic building through the horizontal connecting members 30.
Referring to fig. 17 to 18, in order to increase structural stability between the horizontal connection members 30, a connection beam may be disposed between the horizontal connection members 30 disposed between the parallel existing walls.
Referring to fig. 6 to 9 and 17 to 19, removing a portion of the wall structure of the second existing wall 20, that is, removing the wall removing section 21, integrally retaining the first existing wall 10 to form a wall column replacement area on the removed area of the second existing wall 20, removing a portion of the existing structural floor slabs 50 in each floor of the historic building to expose the wall column replacement area on each floor of the existing structural floor slabs 50; and constructing a newly-added structural column 60 of a reinforced concrete structure or a steel structure of the historical building in the wall column replacement region from the lower layer to the upper layer in sequence, and connecting the newly-added structural column 60 with the first existing wall body 10 to complete the wall column replacement of the historical building.
Referring to fig. 10, when the existing structural floor does not need to be replaced, the removed portion of the existing structural floor in each floor of the historic building is filled. At this time, the wall demolition section 21 can be constructed by bricking.
According to the method for repairing the historical building provided by the embodiment of the invention, when the existing structural floor slab needs to be replaced, the new structural floor slab is removed and replaced by the existing structural floor slab in each layer of the historical building through the new and old structural floor slab replacement method. Namely, the method for repairing a historical building provided by the embodiment of the invention may further include:
102, replacing the new and old structural floor slab:
in a first step, referring to fig. 2, 10 to 12 and 15, the existing structural floor slabs 50 of each floor of the historical building are sequentially removed from the upper floor to the lower floor, and when the existing structural floor slabs 50 of the historical building are removed, a first structural portion 81 of an additional main beam is constructed on the floor through the additional structural column 60, the first structural portion of the additional main beam is embedded into the additional structural column 60, and the upper plane of the first structural portion 81 of the additional main beam is flush with the upper plane of the additional structural column 60.
A second step, referring to fig. 13 to 14 and 16, after removing all the layers of the existing structural floor slabs 50 and completing the first structural portions 81 of the newly added main beams of all the layers, constructing secondary beams (not shown) on the first structural portions 81 of the newly added main beams of each layer; and then constructing a second structure part 82 of the newly-added main beam and a newly-added structure floor 80 on each layer through the first structure part 81 of the newly-added main beam and the secondary beam, wherein the first structure part 81 of the newly-added main beam and the second structure part 82 of the newly-added main beam form the newly-added main beam of a complete structure, the newly-added structure floor 80 is partially sunk and embedded into the newly-added main beam and the secondary beam, and the newly-added structure floor 80 is connected with the first existing wall 10 to finish the replacement of the new structure floor and the old structure floor on all layers in the historical building. Wherein newly-increased girder and secondary beam are each other the embedded structure to increase the structural stability of the frame roof beam that newly-increased girder and secondary beam constitute.
That is to say, the newly added structural floor 80 of the embodiment of the invention is constructed by two-step secondary forming, first forming the first structural portion 81 of the newly added main beam, and then forming the second structural portion 82 of the newly added main beam and the newly added structural floor at the same time, so as to complete the complete construction of the newly added main beam and the newly added structural floor 80.
According to the method for repairing the historical building, provided by the embodiment of the invention, the newly-added structural floor slab 80 is subjected to two-step secondary forming construction instead of one-step forming construction, and the first structural part 81 of the newly-added main beam on the same layer can be connected with the first existing wall body 10, so that the structural stability is improved under the condition that the structural floor slab is not arranged on the layer. After the first structural part 81 of the newly added main beam on the previous layer is constructed, the existing structural floor slab 50 on the next layer can be dismantled and the first structural part 81 of the newly added main beam on the layer can be constructed without waiting for reaching the hardness standard, so that the overall construction efficiency of the newly added structural floor slab 80 can be improved. In addition, the newly added structural floor 80 formed in the second forming process in the embodiment of the present invention may be constructed with the second structural portion 82 of the newly added main beam and the newly added structural floor from top to bottom or from bottom to top. The limitation that the newly-added structural floor slab 80 must be constructed from top to bottom in one-step forming construction is broken, particularly the convenience of space operation is provided for constructing the second structural part 82 of the newly-added main beam and the newly-added structural floor slab 80 from top to bottom, and the construction efficiency can be further improved.
According to the method for repairing the historical building, provided by the embodiment of the invention, the structural stability between the first existing wall 10 and the second existing wall 20 is ensured through the wall column replacement structure, so that the stability of the overall structure of the historical building is ensured, the risks of fragmentation, collapse, structural deformation and the like of the historical building in the repair construction process are prevented, the gravity of the existing structural floor slab 50 is borne in a manner that the wall column replacement structure is in contact with the existing structural floor slab 50, and the safety risks of deformation, fragmentation and collapse of the existing wall under the existing structural floor slab 50 and the existing wall body under the existing structural floor slab 50 due to the influence of the gravity in the repair construction process of the historical building are avoided.
In the method for repairing a historical building provided by the embodiment of the invention, on the premise of ensuring safe repairing construction through a wall column replacement structure, by dismantling a local wall body of the second existing wall body 20 which is not reserved, and the demolished area of the second existing wall 20 and the demolished portion of the existing structural floor 50 at the corresponding position of the existing structural floor 50 form communicated wall column replacement areas in the respective floors of the historic building, then, the newly added structural column 60 is constructed from the lower layer to the upper layer in the wall column replacement area, thereby completing the wall column replacement, and the newly added structural column 60 is connected with the first existing wall body 10, since the structural stability of the newly added structural pillars 60 and the first existing wall 10 is greater than that of the second existing wall 20 and the first existing structural wall 10, so that the first existing wall 10 having a protective value is protected by the additional structural columns 60 to repair the historic building.
According to the method for repairing the historical building provided by the embodiment of the invention, in the construction process of the wall column replacement method and the new and old structure floor replacement method, the first existing wall with the protection value is protected by the newly added structure column and the newly added structure floor, so that the problem of repairing and constructing the historical building on the premise of not damaging the existing masonry structures such as the first existing wall with the protection value is solved. The method is particularly suitable for repairing construction of existing wall bodies with protective values, such as external walls of historical buildings, which are kept in a complete way.
In the method for repairing a historical building provided by the embodiment of the invention, part of the existing structural floor slabs 50 in each layer can be sequentially removed from top to bottom by chiseling or cutting and the like, so that the wall column replacement area is exposed on the existing structural floor slabs 50 in each layer. The purpose of removing part of the existing structural floor 50 from top to bottom is to facilitate construction, so that construction waste such as broken blocks after removal can fall onto the existing structural floor 50 of the next floor for cleaning.
Referring to fig. 9 to 10, in the method for repairing historical buildings according to the embodiment of the present invention, before or after the replacement of the floor slab of the new or old structure is completed, the wall column replacement structure and the remaining existing wall that is not reserved may be removed. The detached wall column replacement structure can be recycled, and has the effects of energy conservation and environmental protection. When the wall column replacement structure is removed after the replacement of the floor slab of the new and old structure is completed, at least a part of the second existing wall 20 connected to the wall column replacement structure needs to be reserved. To further ensure the structural stability and safety of the first existing wall 10 for repair construction of the historic building. The first existing wall 10 having protective value in the embodiment of the present invention includes, but is not limited to, an exterior wall of a building, and may also be an interior wall of a building.
Referring to fig. 4 to 5 and 11 to 13, in the method for repairing a historical building according to the embodiment of the present invention, a part of the wall structure of the second existing wall 20 of the historical building, that is, the wall removal section 21, is removed sequentially from the upper floor to the lower floor.
According to the method for repairing the historical buildings, provided by the embodiment of the invention, the operation is sequentially dismantled from top to bottom, so that the collection and the cleaning of construction wastes or other wastes such as existing walls, existing structural floors and the like which are not required to be reserved after the dismantling are facilitated. That is, the construction waste or the waste falls on the next existing structural floor 50, and is carried by the existing structural floor 50, so as to facilitate the cleaning operation of the construction waste or the waste.
Referring to fig. 8, in the method for repairing a historical building according to the embodiment of the present invention, the newly added structural pillars 60 are connected to the first existing wall 10 through the anchoring members 70 or the dowels, so that the structural stability of the first existing wall 10 is improved, and the first existing wall 10 is protected by the newly added structural pillars 60. To further improve the structural stability of the first existing wall 10, the additional structural columns 60 are disposed adjacent to the first existing wall 10.
According to the method for repairing the historical building, when the existing structural floor slabs 50 of each layer of the historical building are sequentially removed from the upper layer to the lower layer, the remained existing wall body between the existing structural floor slab 50 of the layer and the existing structural floor slab 50 of the next layer is removed at the same time, wherein the remained existing wall body which does not remain comprises the remained second existing wall body 20 and other existing wall bodies which do not need to be remained, so that the load loads of the remained second existing wall body 20 or other existing wall bodies which do not need to be remained are reduced, and the load loads and the gravity of the existing structural floor slabs 50 of the remained existing wall body are prevented from having adverse effects on the structural stability and the safety of the first existing wall body 10. That is, in the embodiment of the present invention, the dismantling operation of the wall dismantling section 21, the existing structural floor 50, and the existing wall that does not need to be maintained may be performed in the order from top to bottom.
According to the method for repairing the historical buildings, the demolished building garbage or other wastes can be integrally transported through the discharging platform arranged on the outer side of the outer wall of the historical buildings.
The method for repairing a historical building, provided by the embodiment of the invention, comprises the following steps of sequentially constructing a newly-added structural column 60 of a reinforced concrete structure of the historical building from a lower layer to an upper layer in a wall column replacement area:
binding column reinforcing steel bars in the wall column replacement area, pouring concrete from bottom to top to form a newly added structural column 60, connecting the newly added structural column 60 with the first existing wall 10, and reserving the reinforcing steel bars below the floor slab outwards on the newly added structural column 60. The reinforcing bars in which the parts below the floor slab are reserved are also called dowel bars.
The uppermost structural floor 50 can be removed by lifting and transporting the whole floor by a crane or other hoisting equipment, or by cutting or chiseling. The removal of existing structural floor slabs 50 from other floors typically employs a destructive removal process such as cutting, chiseling, crushing, etc. to facilitate the removal process. The integral hoisting and dismantling can improve the dismantling efficiency. The method for hoisting and dismantling the whole of the uppermost layer, namely the top layer existing structural floor slab 50 is particularly suitable for the existing structural floor slab with the top layer of a plane structure. The disassembly method described above can also be used when the top existing structural floor 50 is non-planar.
In the construction operation of dismantling the existing wall or the existing structural floor slab 50 which does not need to be reserved, the structural integrity of the first existing wall 10 is ensured not to be damaged, and for the existing wall which does not need to be reserved, the space of the dismantling area meets the space requirement of the reserved dowel bars constructed at the part below the floor slab of the newly added structural column 60 and the newly added structural floor slab 80.
Referring to fig. 5, in the method for repairing a historical building according to the embodiment of the present invention, when a first existing wall 10 intersects a second existing wall 20, the horizontal connecting members 30 are connected to the first existing wall 10 to form a triangular structure, and the two horizontal connecting members 30 are oppositely disposed on two sides of the second existing wall 20, so as to ensure stable connection of a wall-column replacement structure.
Referring to fig. 17, in the method for repairing a historical building according to the embodiment of the present invention, when the first existing wall 10 is parallel to the second existing wall 20, the two horizontal connecting members 30 are connected to the first existing wall 10 and the second existing wall 20 to form a square structure, so that the stable connection of the wall column replacement structure is ensured, and the structural stability between the first existing wall 10 and the second existing wall 20 is improved by the wall column replacement structure, thereby preventing the deformation defect. At this time, the two horizontal connecting members 30 are arranged in parallel.
The present invention is not limited to the above-described embodiments, and any variations and modifications thereof by those skilled in the art are intended to fall within the scope of the appended claims.
Claims (8)
1. A method for repairing a historical building is characterized by comprising the following steps:
the wall column replacement method comprises the following steps:
setting a historical building at the same position of each floor, wherein the historical building at least comprises a first existing wall with protective value and a detachable second existing wall, and a wall column replacement structure is arranged between the first existing wall and the second existing wall and is in contact with an existing structural floor of the historical building, so that the wall column replacement structure supports the existing structural floor; removing part of the wall structure of the second existing wall, integrally retaining the first existing wall to form a wall column replacement area on the removed area of the second existing wall, and removing part of the existing structural floor slabs in each layer of the historical building to expose the wall column replacement area on each layer of the existing structural floor slabs; constructing a reinforced concrete structure or a newly added structural column of a steel structure of the historical building in a wall column replacement region from a lower layer to an upper layer in sequence, and connecting the newly added structural column with a first existing wall body to complete wall column replacement of the historical building;
when the existing structural floor slabs need to be replaced, removing and replacing newly-added structural floor slabs in each layer of the historical building by a new and old structural floor slab replacement method; the new and old structure floor slab replacement method comprises the following steps:
the method comprises the following steps that firstly, existing structural floor slabs of each layer of the historical building are sequentially dismantled from an upper layer to a lower layer, when the existing structural floor slabs of the historical building are dismantled, a first structural part of a newly-added main beam is constructed on the layer through a newly-added structural column, the first structural part of the newly-added main beam is embedded into the newly-added structural column, and the upper plane of the first structural part of the newly-added main beam is flush with the upper plane of the newly-added structural column;
secondly, after all layers of existing structural floor slabs are removed and the first structural parts of the newly-added main beams of all layers are completed, constructing secondary beams on the first structural parts of the newly-added main beams of all layers; then, simultaneously constructing a second structure part of the newly-added main beam and a newly-added structure floor slab on each layer through the first structure part and the secondary beam of the newly-added main beam, sinking and embedding the newly-added structure floor slab on the newly-added main beam and the secondary beam, and connecting the newly-added structure floor slab with the first existing wall to finish the replacement of the new structure floor slab and the old structure floor slab on all layers in the historical building;
and when the existing structural floor slab does not need to be replaced, filling and constructing the dismantled existing structural floor slab part in each layer of the historical building.
2. The method for repairing a historical building according to claim 1, wherein the uppermost existing structural floor of the historical building is removed integrally by a hoisting device; and cutting, chiseling or crushing and dismantling the existing structural floor slab below the uppermost layer.
3. A method of renovating a historic building according to claim 1, wherein the wall stud replacement structure and the remaining existing wall that is not retained are removed before or after the replacement of the floor slab of the old and new structure is completed.
4. A method of renovating a historical building according to claim 1, wherein the newly added structural column is connected to the first existing wall by means of anchors or tendons.
5. The method of repairing a historical building of claim 1, wherein the wall-column replacement structure comprises:
at least two horizontally disposed horizontal connectors;
the attachment connecting piece is arranged on the existing wall body; the horizontal connecting piece is arranged between the first existing wall body and the second existing wall body through the attached connecting piece.
6. The method of repairing a historical building according to claim 5, wherein the method of providing the wall-column replacement structure comprises:
step 1, constructing a wall-buried attachment connecting piece on a first existing wall body and a second existing wall body;
and 2, constructing horizontal connecting pieces between the attachment connecting pieces, and contacting the horizontal connecting pieces with the existing structural floor slabs of the historical building so as to support the existing structural floor slabs of the historical building through the horizontal connecting pieces.
7. A method of renovating a historic building according to claim 5 or 6, characterized in that the attaching and connecting element comprises:
the fixing device comprises two fixing plates and a fastener vertically penetrating through the two fixing plates, wherein the fastener penetrates through an existing wall body to lock and fasten the two fixing plates on two sides of the existing wall body.
8. The method of repairing historical buildings according to claim 5,
when the first existing wall body is intersected with the second existing wall body, the horizontal connecting pieces are connected with the first existing wall body to form a triangular structure, and the two horizontal connecting pieces are oppositely arranged on two sides of the second existing wall body;
when the first existing wall body is parallel to the second existing wall body, the two horizontal connecting pieces are connected with the first existing wall body and the second existing wall body to form a square structure.
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| CN117703120A (en) * | 2023-11-10 | 2024-03-15 | 中建八局第四建设有限公司 | Method for repairing historic building wood floor |
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