CN108360835A - The ruggedized construction construction method of old building - Google Patents
The ruggedized construction construction method of old building Download PDFInfo
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- CN108360835A CN108360835A CN201810184634.5A CN201810184634A CN108360835A CN 108360835 A CN108360835 A CN 108360835A CN 201810184634 A CN201810184634 A CN 201810184634A CN 108360835 A CN108360835 A CN 108360835A
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- deformed bar
- wall
- reinforcing rib
- grouting pipe
- steel
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- 238000010276 construction Methods 0.000 title claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 62
- 239000010959 steel Substances 0.000 claims abstract description 62
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 52
- 210000003205 muscle Anatomy 0.000 claims abstract description 38
- 238000003466 welding Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000007569 slipcasting Methods 0.000 claims abstract description 12
- 239000003292 glue Substances 0.000 claims abstract description 11
- 230000002787 reinforcement Effects 0.000 claims abstract description 10
- 238000004873 anchoring Methods 0.000 claims abstract description 5
- 238000009877 rendering Methods 0.000 claims abstract description 5
- 239000002002 slurry Substances 0.000 claims description 39
- 239000004567 concrete Substances 0.000 claims description 33
- 238000002347 injection Methods 0.000 claims description 23
- 239000007924 injection Substances 0.000 claims description 23
- 239000004570 mortar (masonry) Substances 0.000 claims description 15
- 238000005728 strengthening Methods 0.000 claims description 14
- 238000005452 bending Methods 0.000 claims description 11
- 240000002853 Nelumbo nucifera Species 0.000 claims description 8
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims description 8
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 239000011449 brick Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 238000010422 painting Methods 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 229910003460 diamond Inorganic materials 0.000 claims description 4
- 239000010432 diamond Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 4
- 238000010348 incorporation Methods 0.000 claims description 4
- 238000003359 percent control normalization Methods 0.000 claims description 4
- 238000007711 solidification Methods 0.000 claims description 4
- 230000008023 solidification Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000001556 precipitation Methods 0.000 claims 1
- 101100334009 Caenorhabditis elegans rib-2 gene Proteins 0.000 description 12
- 239000011440 grout Substances 0.000 description 12
- 210000002445 nipple Anatomy 0.000 description 9
- 239000004593 Epoxy Substances 0.000 description 6
- 238000011049 filling Methods 0.000 description 6
- 210000002435 tendon Anatomy 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- -1 methacrylic acid Lipid Chemical class 0.000 description 3
- 239000008267 milk Substances 0.000 description 3
- 210000004080 milk Anatomy 0.000 description 3
- 235000013336 milk Nutrition 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 230000010412 perfusion Effects 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 239000000344 soap Substances 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- 238000003763 carbonization Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a kind of ruggedized construction construction methods of old building, it is characterized in that wall reinforcement construction procedure is using as follows：(1) rendering layer, the embedded hole of preboring Grouting Pipe are removed；(2) deformed bar is hung；(3) reinforcing rib is hung on deformed bar, is tentatively connect deformed bar with reinforcing rib with steel wire；(4) prestressed stretch-draw is carried out to deformed bar；(5) deformed bar is subjected to welding anchoring with fixing muscle after prestressed stretch-draw, deformed bar and reinforcing rib is welded and fixed；(6) Grouting Pipe is buried, Grouting Pipe and the gap in embedded hole are closed using structure glue；(7) slip casting is carried out to wall.
Description
Technical field
The present invention relates to a kind of construction method of old building, more particularly to the ruggedized construction construction party of a kind of old building
Method.
Background technology
Old building by long-term use after the phenomenon that will appear depression of bearing force because of a variety of causes, be mainly manifested in Old building
The wall of object cannot meet the requirement of existing load because crack or bearing capacity of wall body occur in the reasons such as sedimentation；Old building
Beams of concrete is because concrete carbonization will appear depression of bearing force, or bearing capacity occurs because using the promotion of standard and cannot reach
It is required that.Therefore for old building, the whole load effect of reinforcement structure, the mechanical property of structure is improved.
Invention content
The present invention is to provide a kind of ruggedized construction construction method of old building, solves bearing capacity of wall body and concrete joist support
Carry the inadequate problem of power.
The present invention is inadequate for strength of wall body, takes following ruggedized construction：It is arranged in surface of wall after wall stripping painting
One skin deformed bar, a diameter of 12~14mm of deformed bar, deformed bar spacing are 150~300mm, deformed bar
Arrange that non-prestressed reinforcing rib, deformed bar are welded to connect with reinforcing rib again above, a diameter of 12~14mm of reinforcing rib,
Reinforcing rib bar spacing is 150~300mm.Just arranged direction and horizontal sextant angle are 45 degree to deformed bar, reinforcing rib arrangement side
To vertical with arranged direction at the beginning of deformed bar.Deformed bar is consolidated by fixing muscle after deformed bar tensioning
Fixed, fixing muscle is welded and fixed with deformed bar, a diameter of 14~16mm of fixing muscle.Fixing muscle spacing be 150~
300mm, each tensioned unit length are 150~300mm, and reinforcing rib is arranged in two ends of tensioned unit.Deformed bar
Arrange that Grouting Pipe, slip casting tube spacing are 350~450mm in the tensioned unit formed with non-prestressed reinforcing rib, Grouting Pipe is straight
The stainless-steel pipe of diameter 10mm, Grouting Pipe are embedded to wall mortar joint, and length of embedment 60mm is fixed with structure glue.Grouting Pipe
Three-way valve is set between slurry can.
Following ruggedized construction can also be used：A skin deformed bar is arranged in surface of wall, in advance after wall stripping painting
Stress bar diameter is 12~14mm, and deformed bar spacing is 150~300mm, arranges non-pre- answer above deformed bar again
Power reinforcing rib, deformed bar are welded to connect with reinforcing rib, a diameter of 12~14mm of reinforcing rib, and reinforcing rib bar spacing is
150~300mm.Just arranged direction is level to deformed bar, and reinforcing rib arranged direction is to be vertically arranged.Deformed bar tensioning
After deformed bar is fixed by fixing muscle, fixing muscle is welded and fixed with deformed bar, and fixing muscle is straight
Diameter is 14~16mm.Fixing muscle spacing is 300~600mm, and each tensioned unit length is 300~600mm, in tensioned unit
Reinforcing rib is arranged in two ends, and row's reinforcing rib is arranged between end vertical strengthening ribs and vertical fixing muscle.Deformed bar
Arrange that Grouting Pipe, slip casting tube spacing are 350~450mm in the tensioned unit formed with non-prestressed reinforcing rib, Grouting Pipe is straight
The stainless-steel pipe of diameter 10mm, Grouting Pipe are embedded to wall mortar joint, and length of embedment 60mm is fixed with structure glue.Grouting Pipe
Three-way valve is set between slurry can.
After deformed bar is arranged in surface of wall, wall body structure performance can have greatly improved, even structural damage
Form prodigious can also improve, and can be transitioned into elastic break-down from plastic failure, obvious action is had safely to structure.
Wall reinforcement construction procedure is using as follows：
(1) rendering layer is removed, the embedded bore dia in the embedded hole of preboring Grouting Pipe, Grouting Pipe is 12mm；Preboring buries hole
Using electronic rotation diamond core drill, it is water-cooled drill bit and is considered to be worth doing with brick output；Using steel wire clear up surface of wall dust and
Dross or loose position simultaneously keep drying；
(2) deformed bar is hung, deformed bar is fixed on by wall by U-iron button, U-iron button is inserted into wall ash
Seam；
(3) reinforcing rib is hung on deformed bar, is tentatively connect deformed bar with reinforcing rib with steel wire；
(4) prestressed stretch-draw is carried out to deformed bar, deformed bar tensioning uses lever type clamping tool, lever
The resistance arm of clamping tool and the ratio of power arm are 0.05~0.15.Tensioning process is using as follows：Deformed bar is just opened
Tension is pulled to 10% control tension stress, holds lotus 3min and establishes primary stress, then be stretched to control tension stress, holds lotus 5min
Establish prestressing force.
(5) deformed bar is subjected to welding anchoring with fixing muscle after prestressed stretch-draw, by deformed bar and added
Strengthening tendons are welded and fixed；
(6) Grouting Pipe is buried, Grouting Pipe and the gap in embedded hole are closed using structure glue；
(7) slip casting is carried out to wall；With slip casing by pressure machinery slurries injection wall body, slip casting since being set most lower ranking, by
Step develops to both sides upwards and symmetrically, reaches expecting pressure or slurries in neighbouring injection point free flow in each injection point
Go out, injection can terminate, injection hole plug.
If slurries have leakage, leakage channel is such as can not find, slurries incorporation accelerator, which is continued a small amount of injections, makes leakage
Gradually precipitate blocking in channel.
After slurries solidification completely, removes Grouting Pipe and carry out sealing of hole.
If wall has crack, following handle is carried out before step (7)：
1) grout nipple is buried in the middle part of crack, perfusion point spacing is determined according to fracture width and penetration of fracture synthesis, spacing
For 200~300mm；
2) dead-end fracture is closed using epoxy mortar after grout nipple is embedded, forms a confined space, and slurries disengaging is reserved
Mouthful, then slurries are pressed into gap with syringe, so that it is filled.
3) leakage check applies one layer of soap along crack, is passed through compressed air from grout nipple, air leak position is repaired sealing
Until not leaking.
4) it is in the milk, when fracture width is less than 0.3mm, after epoxy mortar dead-end fracture, then uses methacrylic acid
Lipid slurry filling；When fracture width is greater than or equal to 0.3mm and is less than 1mm, using epoxy resin slurry filling；When splitting
When slit width degree is greater than or equal to 1mm, it is perfused using cement grout.
According to the loading characteristic of beams of concrete, concrete beam strengthening is taken as follows：It is applied at the 1/3 of beams of concrete and 2/3
Add upward prestressing force that can alleviate the maximal bending moment of beams of concrete significantly, so angle steel is bent at 1/3 and 2/3 in the present invention,
Angle steel bending place cuts out vee, and vee back side welding steel is reinforced, and welding steel weld width is 150
~200mm, steel plate thickness are 12~14mm.Fastening screw, a diameter of 18~22mm of fastening screw, nut is arranged in angle steel bending place
Height is more than 1.5 times of screw diameter.Beams of concrete following two corner is evenly distributed with angle setting steel, left comer portion angle steel and right corner portion angle steel
Between weld batten plate, batten plate thickness is 10~12mm, and batten plate width is 100~120mm.
Beams of concrete construction procedure is using as follows：
(1) in beams of concrete following settings temporary support；
(2) 250~300mm of brick wall for cutting bearing beams of concrete, for angle steel construction indwelling operating space；
(3) inserted angle steel after beams of concrete removing surface；
(4) fastening screw is installed, diagonal steel carries out prestressed stretch-draw；
(5) welding steel and batten plate.
Structure of the invention performance is good, securely and reliably.
Description of the drawings
Fig. 1 is wall reinforcement structural schematic diagram one, and Fig. 2 is wall reinforcement structural schematic diagram two, and Fig. 3 is before concrete strengthening
Structural schematic diagram, Fig. 4 are concrete strengthening structural schematic diagram.
In each attached drawing：1, deformed bar, 2, reinforcing rib, 3, fixing muscle, 4, Grouting Pipe, 5, angle steel, 6, fastening screw, 7,
Steel plate, 8, batten plate.
Specific implementation mode
Embodiment one
The present embodiment is inadequate for strength of wall body, takes following ruggedized construction：In surface of wall cloth after wall stripping painting
Set a skin deformed bar 1,1 a diameter of 12mm of deformed bar, 1 spacing of deformed bar is 200mm, on deformed bar 1
Face arranges that non-prestressed reinforcing rib 2, deformed bar 1 are welded to connect with reinforcing rib 2 again, and 2 a diameter of 12mm of reinforcing rib adds
2 bar spacing of strengthening tendons is 200mm.Just arranged direction and horizontal sextant angle are 45 degree to deformed bar 1,2 arranged direction of reinforcing rib and
Just arranged direction is vertical for deformed bar 1, and deformed bar 1 is just arranged as Fig. 1 dotted line positions, and deformed bar 1 is after tensioning
Become solid line position.Deformed bar 1 is fixed by fixing muscle 3 after 1 tensioning of deformed bar, fixing muscle 3 with
Deformed bar 1 is welded and fixed, 3 a diameter of 14mm of fixing muscle.3 spacing of fixing muscle is 200mm, each tensioned unit length
For 200mm, reinforcing rib 2 is set in two ends of tensioned unit.That deformed bar 1 is formed with non-prestressed reinforcing rib 2
It draws and arranges Grouting Pipe 4 in unit, 4 spacing of Grouting Pipe is 400mm, and Grouting Pipe 4 is the stainless-steel pipe of diameter 10mm, Grouting Pipe 4
It is embedded to wall mortar joint, length of embedment 60mm is fixed with structure glue.Three-way valve is set between Grouting Pipe 4 and slurry can.
Following ruggedized construction can also be used：A skin deformed bar 1 is arranged in surface of wall, in advance after wall stripping painting
1 a diameter of 12mm of stress reinforcing bar, 1 spacing of deformed bar are 200mm, and deformed bar 1 arranges non-prestressed reinforcement again above
Muscle 2, deformed bar 1 are welded to connect with reinforcing rib 2,2 a diameter of 12mm of reinforcing rib, and 2 bar spacing of reinforcing rib is
200mm.Just arranged direction is level to deformed bar 1, and 2 arranged direction of reinforcing rib is to be vertically arranged, and deformed bar 1 is just arranged
For Fig. 2 dotted line positions, deformed bar 1 becomes solid line position after tensioning.By prestress steel after 1 tensioning of deformed bar
Muscle 1 is fixed by fixing muscle 3, and fixing muscle 3 is welded and fixed with deformed bar 1, and fixing muscle 3 a diameter of 14~
16mm.3 spacing of fixing muscle is 400mm, and each tensioned unit length is 400mm, is arranged in two ends of tensioned unit and reinforces
Muscle 2 arranges row's reinforcing rib 2 between end vertical strengthening ribs 2 and vertical fixing muscle 3.Deformed bar 1 adds with non-prestressed
Arrange that Grouting Pipe 4,4 spacing of Grouting Pipe are 400mm in the tensioned unit that strengthening tendons 2 are formed, Grouting Pipe 4 is the stainless steel of diameter 10mm
Steel pipe, Grouting Pipe 4 are embedded to wall mortar joint, and length of embedment 60mm is fixed with structure glue.Between Grouting Pipe 4 and slurry can
Three-way valve is set.
Wall reinforcement construction procedure is using as follows：
(1) rendering layer is removed, the embedded bore dia in the embedded hole of preboring Grouting Pipe 4, Grouting Pipe 4 is 12mm；Preboring is embedded
Hole uses electronic rotation diamond core drill, is water-cooled drill bit and is considered to be worth doing with brick output；The dust of surface of wall is cleared up using steel wire
And dross or loose position and keep drying；
(2) deformed bar 1 is hung, deformed bar 1 is fixed on by wall by U-iron button, U-iron button is inserted into wall
Mortar joint；
(3) reinforcing rib 2 is hung on deformed bar 1, is carried out deformed bar 1 and reinforcing rib 2 tentatively with steel wire
Connection；
(4) prestressed stretch-draw is carried out to deformed bar 1,1 tensioning of deformed bar uses lever type clamping tool, lever
The resistance arm of formula clamping tool and the ratio of power arm are 0.05~0.15.Tensioning process is using as follows：It will be at the beginning of deformed bar 1
Tensioning is stretched to 10% control tension stress, holds lotus 3min and establishes primary stress, then be stretched to control tension stress, holds lotus
5min establishes prestressing force.
(5) deformed bar 1 is subjected to welding anchoring with fixing muscle 3 after prestressed stretch-draw, by deformed bar 1 with
Reinforcing rib 2 is welded and fixed；
(6) Grouting Pipe 4 is buried, Grouting Pipe 4 and the gap in embedded hole are closed using structure glue；
(7) slip casting is carried out to wall；With slip casing by pressure machinery slurries injection wall body, slip casting since being set most lower ranking, by
Step develops to both sides upwards and symmetrically, reaches expecting pressure or slurries in neighbouring injection point free flow in each injection point
Go out, injection can terminate, injection hole plug.
If slurries have leakage, leakage channel is such as can not find, slurries incorporation accelerator, which is continued a small amount of injections, makes leakage
Gradually precipitate blocking in channel.
After slurries solidification completely, removes Grouting Pipe 4 and carry out sealing of hole.
If wall has crack, following handle is carried out before step (7)：
1) grout nipple is buried in the middle part of crack, perfusion point spacing is determined according to fracture width and penetration of fracture synthesis, spacing
For 200~300mm；
2) dead-end fracture is closed using epoxy mortar after grout nipple is embedded, forms a confined space, and slurries disengaging is reserved
Mouthful, then slurries are pressed into gap with syringe, so that it is filled.
3) leakage check applies one layer of soap along crack, is passed through compressed air from grout nipple, air leak position is repaired sealing
Until not leaking.
4) it is in the milk, when fracture width is less than 0.3mm, after epoxy mortar dead-end fracture, then uses methacrylic acid
Lipid slurry filling；When fracture width is greater than or equal to 0.3mm and is less than 1mm, using epoxy resin slurry filling；When splitting
When slit width degree is greater than or equal to 1mm, it is perfused using cement grout.
Concrete beam strengthening is taken as follows：Apply upward prestressing force at the 1/3 of beams of concrete and 2/3 can significantly alleviate
The maximal bending moment of beams of concrete, so angle steel 5 is bent at 1/3 and 2/3 in the present invention, 5 bending place of angle steel cuts out triangle and lacks
Mouthful, vee back side welding steel 7 is reinforced, and 7 weld width of welding steel is 180mm, and 7 thickness of steel plate is 12mm.
Fastening screw 6,6 a diameter of 20mm of fastening screw is arranged in 5 bending place of angle steel, and nut height is 40mm.Beams of concrete following two
Corner is evenly distributed with angle setting steel 5, and since moment of flexure is larger in the middle part of beams of concrete, batten plate 8,8 thickness of batten plate are welded between two corner angle steel 5
For 10mm, 8 width of batten plate is 100mm.
Beams of concrete construction procedure is using as follows：
(1) in beams of concrete following settings temporary support；
(2) the brick wall 280mm for cutting bearing beams of concrete, for the construction indwelling of angle steel 5 operating space；
(3) inserted angle steel 5 after beams of concrete removing surface；
(4) fastening screw 6 is installed, diagonal steel 5 carries out prestressed stretch-draw；
(5) welding steel 7 and batten plate 8.
Embodiment two
The present embodiment uses following ruggedized construction：After wall stripping painting a skin deformed bar 1 is arranged in surface of wall,
1 a diameter of 12mm of deformed bar, 1 spacing of deformed bar are 200mm, and deformed bar 1 arranges non-prestressed add again above
Strengthening tendons 2, deformed bar 1 are welded to connect with reinforcing rib 2,2 a diameter of 12mm of reinforcing rib, and 2 bar spacing of reinforcing rib is
200mm.Just arranged direction is level to deformed bar 1, and 2 arranged direction of reinforcing rib is to be vertically arranged, and deformed bar 1 is just arranged
For Fig. 2 dotted line positions, deformed bar 1 becomes solid line position after tensioning.By prestress steel after 1 tensioning of deformed bar
Muscle 1 is fixed by fixing muscle 3, and fixing muscle 3 is welded and fixed with deformed bar 1, and fixing muscle 3 a diameter of 14~
16mm.3 spacing of fixing muscle is 400mm, and each tensioned unit length is 400mm, is arranged in two ends of tensioned unit and reinforces
Muscle 2 arranges row's reinforcing rib 2 between end vertical strengthening ribs 2 and vertical fixing muscle 3.Deformed bar 1 adds with non-prestressed
Arrange that Grouting Pipe 4,4 spacing of Grouting Pipe are 400mm in the tensioned unit that strengthening tendons 2 are formed, Grouting Pipe 4 is the stainless steel of diameter 10mm
Steel pipe, Grouting Pipe 4 are embedded to wall mortar joint, and length of embedment 60mm is fixed with structure glue.Between Grouting Pipe 4 and slurry can
Three-way valve is set.
Wall reinforcement construction procedure is using as follows：
(1) rendering layer is removed, the embedded bore dia in the embedded hole of preboring Grouting Pipe 4, Grouting Pipe 4 is 12mm；Preboring is embedded
Hole uses electronic rotation diamond core drill, is water-cooled drill bit and is considered to be worth doing with brick output；The dust of surface of wall is cleared up using steel wire
And dross or loose position and keep drying；
(2) deformed bar 1 is hung, deformed bar 1 is fixed on by wall by U-iron button, U-iron button is inserted into wall
Mortar joint；
(3) reinforcing rib 2 is hung on deformed bar 1, is carried out deformed bar 1 and reinforcing rib 2 tentatively with steel wire
Connection；
(4) prestressed stretch-draw is carried out to deformed bar 1,1 tensioning of deformed bar uses lever type clamping tool, lever
The resistance arm of formula clamping tool and the ratio of power arm are 0.05~0.15.Tensioning process is using as follows：It will be at the beginning of deformed bar 1
Tensioning is stretched to 10% control tension stress, holds lotus 3min and establishes primary stress, then be stretched to control tension stress, holds lotus
5min establishes prestressing force.
(5) deformed bar 1 is subjected to welding anchoring with fixing muscle 3 after prestressed stretch-draw, by deformed bar 1 with
Reinforcing rib 2 is welded and fixed；
(6) Grouting Pipe 4 is buried, Grouting Pipe 4 and the gap in embedded hole are closed using structure glue；
(7) slip casting is carried out to wall；With slip casing by pressure machinery slurries injection wall body, slip casting since being set most lower ranking, by
Step develops to both sides upwards and symmetrically, reaches expecting pressure or slurries in neighbouring injection point free flow in each injection point
Go out, injection can terminate, injection hole plug.
If slurries have leakage, leakage channel is such as can not find, slurries incorporation accelerator, which is continued a small amount of injections, makes leakage
Gradually precipitate blocking in channel.
After slurries solidification completely, removes Grouting Pipe 4 and carry out sealing of hole.
If wall has crack, following handle is carried out before step (7)：
1) grout nipple is buried in the middle part of crack, perfusion point spacing is determined according to fracture width and penetration of fracture synthesis, spacing
For 200~300mm；
2) dead-end fracture is closed using epoxy mortar after grout nipple is embedded, forms a confined space, and slurries disengaging is reserved
Mouthful, then slurries are pressed into gap with syringe, so that it is filled.
3) leakage check applies one layer of soap along crack, is passed through compressed air from grout nipple, air leak position is repaired sealing
Until not leaking.
4) it is in the milk, when fracture width is less than 0.3mm, after epoxy mortar dead-end fracture, then uses methacrylic acid
Lipid slurry filling；When fracture width is greater than or equal to 0.3mm and is less than 1mm, using epoxy resin slurry filling；When splitting
When slit width degree is greater than or equal to 1mm, it is perfused using cement grout.
Concrete beam strengthening is taken as follows：Apply upward prestressing force at the 1/3 of beams of concrete and 2/3 can significantly alleviate
The maximal bending moment of beams of concrete, so angle steel 5 is bent at 1/3 and 2/3 in the present invention, 5 bending place of angle steel cuts out triangle and lacks
Mouthful, vee back side welding steel 7 is reinforced, and 7 weld width of welding steel is 180mm, and 7 thickness of steel plate is 12mm.
Fastening screw 6,6 a diameter of 20mm of fastening screw is arranged in 5 bending place of angle steel, and nut height is 40mm.Beams of concrete following two
Corner is evenly distributed with angle setting steel 5, and batten plate 8 is welded between left comer portion angle steel 5 and right corner portion angle steel 5, and 8 thickness of batten plate is 10mm, and batten plate 8 is wide
Degree is 100mm.
Beams of concrete construction procedure is using as follows：
(1) in beams of concrete following settings temporary support；
(2) the brick wall 280mm for cutting bearing beams of concrete, for the construction indwelling of angle steel 5 operating space；
(3) inserted angle steel 5 after beams of concrete removing surface；
(4) fastening screw 6 is installed, diagonal steel 5 carries out prestressed stretch-draw；
(5) welding steel 7 and batten plate 8.
Claims (1)
1. a kind of ruggedized construction construction method of old building, it is characterized in that wall reinforcement take it is as follows：After wall stripping painting
Surface of wall arrange a skin deformed bar, a diameter of 12~14mm of deformed bar, deformed bar spacing be 150~
300mm arranges that non-prestressed reinforcing rib, deformed bar are welded to connect with reinforcing rib above deformed bar again, reinforces
A diameter of 12~the 14mm of muscle, reinforcing rib bar spacing are 150~300mm；By deformed bar after deformed bar tensioning
It is fixed by fixing muscle, fixing muscle is welded and fixed with deformed bar, a diameter of 14~16mm of fixing muscle；Prestressing force
Arrange that Grouting Pipe, slip casting tube spacing are 350~450mm, Grouting Pipe in the tensioned unit that reinforcing bar is formed with non-prestressed reinforcing rib
For the stainless-steel pipe of diameter 10mm, Grouting Pipe is embedded to wall mortar joint, and length of embedment 60mm is fixed with structure glue；Note
Three-way valve is set between slurry pipe and slurry can；
Wall reinforcement construction procedure is using as follows：
(1) rendering layer is removed, the embedded bore dia in the embedded hole of preboring Grouting Pipe, Grouting Pipe is 12mm；Preboring is buried hole and is used
Electronic rotation diamond core drill is water-cooled drill bit and is considered to be worth doing with brick output；The dust and dross of surface of wall are cleared up using steel wire
Or loose position and keep drying；
(2) deformed bar is hung, deformed bar is fixed on by wall by U-iron button, U-iron button is inserted into wall mortar joint；
(3) reinforcing rib is hung on deformed bar, is tentatively connect deformed bar with reinforcing rib with steel wire；
(4) prestressed stretch-draw is carried out to deformed bar, deformed bar tensioning uses lever type clamping tool, lever type clamping
The resistance arm of tool and the ratio of power arm are 0.05~0.15；Tensioning process is using as follows：By deformed bar initial tensioning
It is pulled to 10% control tension stress, lotus 3min is held and establishes primary stress, then be stretched to control tension stress, lotus 5min is held and establishes
Prestressing force；
(5) deformed bar is subjected to welding anchoring with fixing muscle after prestressed stretch-draw, by deformed bar and reinforcing rib
It is welded and fixed；
(6) Grouting Pipe is buried, Grouting Pipe and the gap in embedded hole are closed using structure glue；
(7) slip casting is carried out to wall；With slip casing by pressure machinery slurries injection wall body, slip casting since being set most lower ranking, gradually to
Above and symmetrically develop to both sides, reach expecting pressure or slurries in each injection point freely flows out in neighbouring injection point, notes
Penetrating can terminate, injection hole plug；
If slurries have leakage, leakage channel is such as can not find, slurries incorporation accelerator, which is continued a small amount of injections, makes leakage channel
Gradually precipitation blocks；
After slurries solidification completely, removes Grouting Pipe and carry out sealing of hole；
Concrete beam strengthening is taken as follows：Angle steel is bent at 1/3 and 2/3, and angle steel bending place cuts out vee, triangle
Notch back side welding steel is reinforced, and welding steel weld width is 150~200mm, and steel plate thickness is 12~14mm；Angle steel
Fastening screw, a diameter of 18~22mm of fastening screw is arranged in bending place, and nut height is more than 1.5 times of screw diameter；Concrete
Beam following two corner is evenly distributed with angle setting steel, welds batten plate between left comer portion angle steel and right corner portion angle steel, and batten plate thickness is 10~
12mm, batten plate width are 100~120mm.
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| CN201810184634.5A CN108360835B (en) | 2016-05-21 | 2016-05-21 | Construction method for reinforcing structure of old building |
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| CN201810184634.5A CN108360835B (en) | 2016-05-21 | 2016-05-21 | Construction method for reinforcing structure of old building |
| CN201610442373.3A CN106088646B (en) | 2016-05-21 | 2016-05-21 | The ruggedized construction of old building |
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| CN201610442373.3A Active CN106088646B (en) | 2016-05-21 | 2016-05-21 | The ruggedized construction of old building |
| CN201711245677.1A Active CN107916797B (en) | 2016-05-21 | 2016-05-21 | Construction method for improving bearing performance of old building |
| CN201810184634.5A Active CN108360835B (en) | 2016-05-21 | 2016-05-21 | Construction method for reinforcing structure of old building |
| CN201711245741.6A Active CN107905551B (en) | 2016-05-21 | 2016-05-21 | Construction method for wall reinforcing structure |
| CN201711245752.4A Active CN107989397B (en) | 2016-05-21 | 2016-05-21 | The reinforcing construction construction method of old building |
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| CN112065000A (en) * | 2020-08-05 | 2020-12-11 | 业之峰诺华家居装饰集团股份有限公司 | Thin tile pasting method layer structure and construction process thereof |
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| CN109577500A (en) * | 2018-12-04 | 2019-04-05 | 富思特新材料科技发展股份有限公司 | A kind of loose insulation board base treatment technique of exterior insulation engineering construction |
| CN110185277A (en) * | 2019-04-19 | 2019-08-30 | 上海市建筑装饰工程集团有限公司 | The restorative procedure of existing building external wall seepage point |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107989398B (en) | 2020-05-12 |
| CN107989398A (en) | 2018-05-04 |
| CN107916796B (en) | 2019-03-05 |
| CN106088646B (en) | 2018-07-24 |
| CN107989397B (en) | 2019-03-05 |
| CN107989397A (en) | 2018-05-04 |
| CN107916797A (en) | 2018-04-17 |
| CN107916796A (en) | 2018-04-17 |
| CN107916797B (en) | 2020-05-15 |
| CN106088646A (en) | 2016-11-09 |
| CN107905551B (en) | 2020-02-04 |
| CN108360835B (en) | 2020-02-04 |
| CN107905551A (en) | 2018-04-13 |
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