CN116591498A - Danger-removing reinforcement method for hydraulic test hall - Google Patents
Danger-removing reinforcement method for hydraulic test hall Download PDFInfo
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- CN116591498A CN116591498A CN202310607596.0A CN202310607596A CN116591498A CN 116591498 A CN116591498 A CN 116591498A CN 202310607596 A CN202310607596 A CN 202310607596A CN 116591498 A CN116591498 A CN 116591498A
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- 238000000034 method Methods 0.000 title claims abstract description 77
- 230000002787 reinforcement Effects 0.000 title claims abstract description 57
- 238000012360 testing method Methods 0.000 title claims abstract description 53
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 86
- 239000010959 steel Substances 0.000 claims abstract description 86
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 79
- 238000007789 sealing Methods 0.000 claims abstract description 29
- 239000003822 epoxy resin Substances 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 25
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 25
- 239000002002 slurry Substances 0.000 claims abstract description 18
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 5
- 238000011835 investigation Methods 0.000 claims abstract description 5
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 34
- 239000010410 layer Substances 0.000 claims description 24
- 239000003292 glue Substances 0.000 claims description 15
- 239000004567 concrete Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000004593 Epoxy Substances 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 239000002344 surface layer Substances 0.000 claims description 5
- 239000000428 dust Substances 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 230000001788 irregular Effects 0.000 claims description 4
- 239000004570 mortar (masonry) Substances 0.000 claims description 4
- 239000003973 paint Substances 0.000 claims description 4
- 238000005488 sandblasting Methods 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 8
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 7
- 239000011150 reinforced concrete Substances 0.000 description 6
- 238000012946 outsourcing Methods 0.000 description 5
- 238000003763 carbonization Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
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- 230000009286 beneficial effect Effects 0.000 description 2
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Classifications
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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
- E04G23/0203—Arrangements for filling cracks or cavities in building constructions
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The invention discloses a method for removing danger and reinforcing a hydraulic test hall, which comprises the steps of respectively sealing gaps of a floor slab, a wall body and a top plate in the hydraulic test hall according to the width of the gaps; and then according to actual investigation conditions, carrying out H60 grouting material reinforcement treatment on the reservoir wall body of the hydraulic test hall in an enlarged section reinforcement mode, wherein the thickness of the reinforced wall body is set to be 100-200mm, longitudinal steel bars and transverse steel bars with enlarged sections are respectively implanted into the original floor and the wall body, and the transverse tie bars are implanted into the reservoir wall body to be reinforced. According to the invention, the crack sealing treatment is firstly carried out on the wall body, the wall and other parts of the hydraulic test hall, and the crack sealing is carried out by injecting the flexible sealing agent, the epoxy resin slurry and the like, so that the crack treatment effect is better and firmer.
Description
Technical Field
The invention relates to the technical field of danger-removing reinforcement in the building field, in particular to a danger-removing reinforcement method for a hydraulic test hall building.
Background
The hydraulic test hall is mainly constructed and used for large-scale hydraulic model test buildings, and because the hydraulic test usually needs to design experiment facilities such as reservoirs and water tanks with larger storage capacity, the hydraulic test hall has larger stacking load, and when the service life of the hydraulic test hall is longer, great potential safety hazards exist, so that the hydraulic test hall needs to be subjected to danger removal and reinforcement.
In the prior art, the hydraulic test hall generally has the following hidden troubles:
1) Obvious durability diseases exist in the long-term use of the concrete structure, the column, the wall, the beam and the plate steel bars are generally rust-expanded and exposed, the carbonization depth of the concrete is larger than the thickness of the actually measured protective layer, and the thickness of the protective layer does not meet the existing design requirements;
2) Because the hydraulic model test is conducted for a long time, the surrounding environment of the hydraulic test hall is relatively moist, rust spots are commonly formed on the surfaces of steel columns and steel beams for supporting, the rust is serious, and the safety collapse danger is caused when the hydraulic test hall is used for a long time;
3) The transverse steel bars on the bottom surface of the reservoir roof slab are generally severely rusted, the steel bars at local positions are rusted, and stress penetrability cracks can appear on the roof slab. And a plurality of transverse cracks appear on the bottom surface of the bottom, the four corners of the overhaul port are provided with cracks which extend outwards, the lengths of the cracks are from the overhaul port corner points to the side walls, part of the cracks are cracked downwards along the side walls, and the vertical cracks are from the top to the bottom of the side walls. The top plate crack is a D-type crack;
in conclusion, the potential safety hazard of the hydraulic hall and the crack treatment of the wall surface, the bottom plate, the top plate and the like which need to be removed from danger and reinforced; reinforcing treatment of the top plate and the beam column, etc., and the mode of the reinforcing treatment of the top plate, the beam column and the crack treatment is too simple in the prior art, so that the effect is very unsatisfactory.
Therefore, in order to solve the above problems, there is a need to develop a better risk-removing reinforcement method for hydraulic test halls.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the danger-removing and reinforcing method for the hydraulic test hall, which can remove and reinforce the hydraulic test hall and has a stable and reasonable overall structure; the technical scheme is as follows:
a hydraulic test hall danger-removing reinforcement method comprises the following steps:
step S1: respectively sealing the gaps of the floor slab, the wall body, the roof and the floors of each layer in the hydraulic test hall according to the width of the gaps;
step S2: according to actual investigation conditions, carrying out wall reinforcement treatment on a reservoir of a hydraulic test hall in a manner of increasing section reinforcement, wherein the increased reinforced wall is formed by pouring H60 grouting materials, the thickness of the reinforced wall is set to be 100-200mm, longitudinal reinforcing steel bars, transverse reinforcing steel bars and vertical reinforcing steel bars are planted in the reinforced wall, the transverse reinforcing steel bars are transversely planted in the reservoir wall to be reinforced, and the vertical reinforcing steel bars are planted in the walls on two sides;
step S3: in the step S1, after the gap sealing treatment is carried out on the reservoir roof, the reservoir roof is reinforced by adopting a mode of increasing the section for reinforcement, a laminated plate is arranged below the reservoir roof, two ends of the laminated plate are fixed on two side walls, a filling gap is reserved between the laminated plate and the reservoir roof, and H60 grouting material is filled in the filling gap;
step S4: reinforcing the frame bent columns in the hydraulic test hall by using an enlarged section reinforcing method or an outsourcing reinforcing method according to the damage degree of the frame bent columns;
step S5: and (5) selecting an enlarged section reinforcing method and an external bonding steel plate reinforcing method according to the damage degree of the frame beam to reinforce the frame beam in the hydraulic test hall.
Further, the reinforcing method for increasing the cross section in the step S4 specifically includes the following steps: four reinforcing plates corresponding to the positions are arranged on the outer side of the frame bent column, the four reinforcing plates are connected end to enclose the frame bent column inside, a filling gap is reserved between the reinforcing plates and the frame bent column, transverse reinforcing steel bars are further arranged on the reinforcing plates and are correspondingly implanted into the frame bent column, longitudinal reinforcing steel bars are further added between the transverse reinforcing steel bars, and H60 grouting materials are correspondingly filled in the filling gap.
Further, the inside of the reinforcing plate and the frame column are also provided with steel wires, the steel wires extend into the filling gaps, the heads of the steel wires are provided with hooks, and when the reinforcing plate is arranged on the outside of the frame column, the steel wires on the reinforcing plate and the steel wires on the frame column are mutually hooked through the hooks.
Further, the wrapping reinforcement method in the step S4 is specifically as follows: four L-shaped stress angle steels are additionally arranged at four corners of the frame-row frame column, a lacing plate is welded between every two adjacent stress angle steels, the lacing plate is welded at the outer end face of the stress angle steel, a filling gap is reserved between the inner side of the lacing plate and the frame-row frame column, the filling gap is positioned between two adjacent stress angle steels, and epoxy resin slurry is filled in the filling gap through pressure equipment.
Further, the reinforcing method for increasing the cross section in the step S5 specifically includes the following steps: the outside at the frame roof beam sets up three and wholly is concave gusset plate, and the upper end of this gusset plate is fixed on the roof, leaves between this gusset plate and the frame roof beam and fills the clearance, be provided with criss-cross horizontal reinforcing bar and longitudinal reinforcement between gusset plate and the frame roof beam, inside horizontal reinforcing bar was implanted to the frame roof beam correspondingly, and fill the clearance and fill corresponding the pouring of H60 thick liquids.
Further, the reinforcement method of the externally-adhered steel plate in the step S5 specifically comprises the following steps: the two sides of the lower end of the frame beam and the two sides of the intersection of the upper end and the top plate are respectively provided with L-shaped outer-wrapping section steel in an adhesive manner, batten plates are welded between the adjacent outer-wrapping section steel, a pouring gap is formed between the inner side of the corresponding batten plate and the frame beam, and epoxy resin slurry is poured into the pouring gap through pressure equipment; the inner sides of the two outer-covered section steel positioned above are also provided with transverse reinforcing steel bars, and the transverse reinforcing steel bars on the two sides are correspondingly implanted into the frame beam.
Further, in the step S1, when the width of the crack is smaller than 0.2mm, a surface sealing method is adopted for treatment, dust and impurities on the surface of the concrete are required to be removed firstly, and a sand blasting method is adopted for removing refractory paint and dirt with strong cohesiveness; when the surface of the irregular net-shaped crack is sealed, the substrate is required to be sprayed with water in advance, dirt or magazines are removed, and then the crack is uniformly coated by adopting a flexible sealing agent, wherein the thickness is set to be 1mm;
when the sealing width of the crack is not less than 0.2mm, the method of pouring epoxy resin slurry is adopted for treatment, firstly, the surface of the crack is cleaned up, the epoxy resin slurry is poured into the crack through pressure equipment, the mounting interval of the glue pouring nozzles is reasonable, the glue pouring nozzles are strictly operated according to the glue pouring sequence and operation requirement specification, the glue pouring is ensured to be compact, and the sealing of the surface of the crack is reliable.
Further, after the ground cracks are treated, the ground is required to be ground comprehensively, repaired and leveled, and after the surface is clean, an epoxy resin primer, an epoxy mortar layer, a putty layer and a surface layer are sequentially coated, so that a new epoxy resin terrace is completed and maintained.
Further, in the step S2, the thickness of the reinforced wall 1 is increased to 150mm.
The beneficial effects are that: the invention has the following beneficial effects:
1) The invention firstly performs crack sealing treatment on the wall body, the wall and other parts of the hydraulic test hall, and performs crack sealing by injecting the flexible sealing agent, injecting the epoxy resin slurry and the like, so that the crack treatment effect is better and firmer;
2) The invention can be realized by adopting a reinforcing method with an enlarged cross section or an outsourcing reinforcing method according to the damage degree to the frame bent column, wherein the reinforcing method with the enlarged cross section has the advantages of simple construction process, mature technology, large bearing capacity and rigidity improvement range of the component, obvious reinforcing effect and lower cost;
3) The external wrapping type reinforcement method has the advantages of small occupied space, small damage to external vertical surfaces, convenient material transportation, small increase of dead weight and short construction and installation period; the problems of poor corrosion resistance of steel in a humid environment can be solved by adopting anticorrosion measures such as galvanization and the like and regular maintenance;
4) The frame beam can also select an enlarged section reinforcing method and an external bonding steel plate reinforcing method according to the damage condition, wherein the enlarged section reinforcing method has the advantages of simple construction process, mature technology, large bearing capacity and rigidity improvement amplitude of the component, obvious reinforcing effect and lower cost; the reinforcement rule of the outer adhesive steel plate has the advantages of small occupied space, small damage to the outer vertical surface, convenient material transportation, small increase of dead weight and short construction and installation period.
Drawings
FIG. 1 is a diagram of a wall reinforcement structure in accordance with the present invention;
FIG. 2 is a view of a reinforcing structure of a top plate of a water reservoir according to the present invention;
FIG. 3 is a view of the reinforcing structure of the added section of the middle frame bent column of the present invention;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
FIG. 5 is a view of the structure of the outer reinforcement of the middle frame bent column of the present invention;
FIG. 6 is a view of a reinforcing structure of the frame beam with increased cross section in the present invention;
fig. 7 is a reinforcing structure diagram of an externally bonded steel plate in the present invention.
Detailed Description
The invention will be further illustrated by the following drawings and specific examples, which are carried out on the basis of the technical solutions of the invention, it being understood that these examples are only intended to illustrate the invention and are not intended to limit the scope of the invention.
A hydraulic test hall danger-removing reinforcement method comprises the following steps:
step S1: respectively sealing the gaps of the floor slab, the wall body, the roof and the floors of each layer in the hydraulic test hall according to the width of the gaps;
step S2: according to actual investigation conditions, carrying out wall reinforcement treatment on a reservoir of a hydraulic test hall in a manner of increasing cross section reinforcement, wherein an increased reinforced wall 1 is formed by pouring H60 grouting materials, the thickness of the reinforced wall is set to be 100-200mm, longitudinal steel bars 2, transverse steel bars 3 and vertical steel bars 12 are planted in the reinforced wall 1, the transverse steel bars 3 are transversely planted in a reservoir wall 13 to be reinforced, and the vertical steel bars 12 are planted in the walls on two sides; specifically, the thickness of the reinforced wall 1 added is 150mm.
Step S3: in the step S1, after the gap sealing treatment is carried out on the reservoir top plate 14, the reservoir top plate 14 is reinforced by adopting a mode of increasing the cross section and reinforcing, a laminated plate 4 is arranged below the reservoir top plate 14, two ends of the laminated plate 4 are fixed on two side walls, a filling gap 5 is reserved between the laminated plate 4 and the reservoir top plate 14, and H60 grouting material is filled in the filling gap 5;
step S4: the reinforcement treatment is carried out on the frame bent columns 6 in the hydraulic test hall by using an enlarged section reinforcement method or an outsourcing reinforcement method according to the damage degree of the frame bent columns 6;
step S5: and (3) selecting an enlarged section reinforcing method and an external bonding steel plate reinforcing method according to the damage degree of the frame beam 7 to reinforce the frame beam 7 in the hydraulic test hall.
The reinforcing method for increasing the cross section in the step S4 is specifically as follows: four reinforcing plates 8 corresponding to the positions are arranged on the outer side of the frame bent column 6, the four reinforcing plates 8 are connected end to enclose the frame bent column 6 inside, a filling gap 5 is reserved between the reinforcing plates 8 and the frame bent column 6, transverse reinforcing steel bars 3 are further arranged on the reinforcing plates 8, the transverse reinforcing steel bars 3 are correspondingly implanted into the frame bent column 6, longitudinal reinforcing steel bars 2 are further added between the transverse reinforcing steel bars 3, and H60 grouting materials are correspondingly filled in the filling gap 5.
As shown in fig. 4, steel wires 68 are further disposed on the inner side of the reinforcing plate 8 and the frame bent posts 6, the steel wires 68 extend into the pouring gaps 5, the heads of the steel wires 68 are provided with hooks 69, and when the reinforcing plate 8 is mounted on the outer side of the frame bent posts 6, the steel wires 68 on the reinforcing plate 8 and the steel wires 68 on the frame bent posts 6 are hooked with each other through the hooks 69.
The wrapping reinforcement method in step S4 is specifically as follows: four L-shaped stress angle steel 9 are additionally arranged at four corners of the frame bent frame column 6, a batten plate 10 is welded between every two adjacent stress angle steel 9, the batten plate 10 is welded at the outer side end face of the stress angle steel 9, a pouring gap 5 is reserved between the inner side of the batten plate 10 and the frame bent frame column 6, the pouring gap 5 is positioned between two adjacent stress angle steel 9, and epoxy resin slurry is poured into the pouring gap 5 through pressure equipment.
The reinforcing method for increasing the cross section in the step S5 is specifically as follows: three reinforcing plates 8 which are integrally concave are arranged on the outer side of the frame beam 7, the upper ends of the reinforcing plates 8 are fixed on the top plate, a filling gap 5 is reserved between the reinforcing plates 8 and the frame beam 7, transverse reinforcing steel bars 3 and longitudinal reinforcing steel bars 2 which are criss-cross are arranged between the reinforcing plates 8 and the frame beam 7, the transverse reinforcing steel bars 3 are correspondingly implanted into the frame beam 7, and H60 grouting material is correspondingly filled in the filling gap 5.
The external bonding steel plate reinforcement method in the step S5 specifically comprises the following steps: the two sides of the lower end of the frame beam 7 and the two sides of the intersection of the upper end and the top plate are respectively provided with L-shaped outer wrapping section steel 11 in an adhesive manner, batten plates 10 are welded between the adjacent outer wrapping section steel 11, a pouring gap 5 is formed between the inner side of the corresponding batten plate 10 and the frame beam 7, and epoxy resin slurry is poured into the pouring gap 5 through pressure equipment; the inner sides of the two outer-covered steel sections 11 positioned above are also provided with transverse steel bars 3, and the transverse steel bars 3 on two sides are correspondingly implanted into the frame beam 7.
In the step S1, when the width of the crack is smaller than 0.2mm, a surface sealing method is adopted for treatment, dust and impurities on the surface of the concrete are required to be removed firstly, and a sand blasting method is adopted for removing refractory paint and dirt with strong cohesiveness; when the surface of the irregular net-shaped crack is sealed, the substrate is required to be sprayed with water in advance, dirt or magazines are removed, and then the crack is uniformly coated by adopting a flexible sealing agent, wherein the thickness is set to be 1mm;
when the sealing width of the crack is not less than 0.2mm, the method of pouring epoxy resin slurry is adopted for treatment, firstly, the surface of the crack is cleaned up, the epoxy resin slurry is poured into the crack through pressure equipment, the mounting interval of the glue pouring nozzles is reasonable, the glue pouring nozzles are strictly operated according to the glue pouring sequence and operation requirement specification, the glue pouring is ensured to be compact, and the sealing of the surface of the crack is reliable.
After the ground cracks are treated, the ground is required to be ground comprehensively, the ground is repaired and leveled, and after the surface is clean, an epoxy resin primer, an epoxy mortar layer, a putty layer and a surface layer are sequentially coated, so that a new epoxy resin terrace is completed and maintenance is carried out.
Example 1
This example illustrates the present invention in detail using the water engineering test hall of the south department. The water engineering test hall of the south department is built in 1936, and in 1937, house construction is stagnated, and in 1947, the water engineering test hall with the largest Asia is completed in 1950.
The hydraulic test hall of the south academy is of a two-layer bent structure, the roof is of a wood truss structure, one layer is a laboratory and a reservoir, the two layers are provided with test water tanks and other devices, and the building area of the hydraulic test hall is about 3583.5m 2 After the staff performs the on-site survey on the water engineering test hall of the south China department, the project current situation and the existing problems are as follows:
the bottom of the reinforced concrete column is seriously damaged, the reinforcing steel bars are exposed, and the safety level of the reinforced concrete frame column member is c u Grade, safety grade of lattice steel column component is b u A stage; the reinforced concrete girder steel bar rust expansion of the reinforced concrete girder steel bar is exposed, and the safety grade of the reinforced concrete frame girder member is d u The safety grade of the reinforced concrete secondary beam is c u A stage; the wall painting layer is peeled off in a large area and has serious water seepage, and the security grade of the bearing part of the enclosure system is B u A stage.
The steel bars on the bottom surface of the top floor slab of the reservoir are exposed in general rust expansion, the transverse steel bars on the bottom surface of the top floor slab of the reservoir are seriously rust-expanded, the steel bars at local positions are rust-broken, a plurality of transverse cracks appear on the bottom surface of the top slab, and white precipitates are arranged at the cracks; the concrete slab with the concrete floor slab with the two-layer floor surface and the high reservoir outside seam width larger than 0.3mm has the safety level of d u Other than stage c u A stage.
The reservoir outer wall and the inner wall are locally damaged by the surface layer with larger area, the wall is provided with vertical through long cracks from top to bottom, and the reservoir wall is locally exposed by the rust expansion of the reinforcing steel bars.
According to the investigation situation, the hydraulic test hall is required to be reinforced, and the reinforcement content comprises: sealing and treating cracks of a floor and a reservoir wall, and reinforcing the reservoir, frame bent columns, frame beams, two-layer floorslabs and roof structures, wherein the frame bent columns 845m, the frame beams 677m and the reservoir wall 783m are reinforced 2 1946m of floor slab 2 。
The reinforcement content of the hydraulic test hall comprises the sealing treatment of cracks of floors and reservoir walls, reinforcement of reservoirs, frame columns, frame beams, two-layer floors and roof structures and renovation of floors and walls.
1) Floor and wall crack sealing treatment
Penetrating cracks appear at a plurality of positions such as reservoir wall body, roof and two-layer floor, in order to slow down the corrosion of reinforcing bar, need seal the processing to the crack, before handling the crack, should take off the current epoxy terrace of two-layer floor first.
When the width of the crack is smaller than 0.2mm, adopting a surface sealing method for treatment; before construction, dust and impurities on the surface of concrete are removed, refractory paint or other dirt with strong cohesiveness are removed by adopting a sand blasting method, the surface of irregular netlike cracks is sealed, a base layer is wetted by sprinkling water in advance, and then the netlike cracks are uniformly painted by using a flexible sealant with the thickness of about 1 mm.
When the width of the crack is not less than 0.2mm, the epoxy resin slurry is adopted for pouring treatment, firstly, the surface of the crack is cleaned up, the epoxy resin slurry is poured into the crack in a pouring mode, the crack surface is sealed reliably, the mounting interval of the glue pouring nozzle is reasonable, the glue pouring sequence and the operation requirement are standard, and the glue pouring is ensured to be compact.
And the ground is ground comprehensively after the cracks are repaired, and the repairing is smooth. After the surface is clean, epoxy resin primer, an epoxy mortar layer, a putty layer and a surface layer are sequentially coated, so that a new epoxy resin terrace is completed and maintenance is carried out.
2) Reservoir wall reinforcement
As shown in FIG. 1, the wall body of the reservoir needs to be reinforced because of the partial reinforcement rust expansion and exposure, vertical through-length cracks from top to bottom and severe leakage phenomenon; in the embodiment, the outer wall is reinforced by adopting an enlarged section reinforcing method, the thickness of the increased wall is 150mm, grouting materials are H60 grouting materials, transverse reinforcing steel bars, vertical reinforcing steel bars, longitudinal reinforcing steel bars and the like are arranged in the grouting materials, and the grouting materials are reliably connected with the original structure in a reinforcement planting mode.
3) Reservoir roof and two-layer floor reinforcement
As shown in fig. 2, the reinforcing steel bars of the reservoir roof are generally severely rusted, the reinforcing steel bars at local positions are rusted and broken, and a plurality of transverse cracks appear on the bottom surface; penetrating cracks appear at a plurality of positions of the two-layer building plate, the detection result is a D-type crack, a plurality of test water tanks are arranged on the two-layer building plate, and the load is large; therefore, the crack of the top plate is required to be sealed, the reinforced by adopting a reinforcing method (superimposed sheet) with increased section, the superimposed sheet is arranged below the top plate, the thickness of the superimposed sheet is 100mm, a pouring gap is reserved between the superimposed sheet and the top plate, the grouting material is H60 grouting material, and the grouting material is reliably connected with the original structure by adopting a reinforcement planting mode.
4) Frame bent column reinforcement
Through structural detection, the section size of the concrete column does not meet the requirement of bearing capacity, the bottom is seriously damaged, the steel bars are exposed, the strength grade of the concrete is low, the carbonization is serious, and the reinforcement method of the frame bent column can be used for selecting an increased section reinforcement method and an outsourcing steel reinforcement method according to the severity of the damage.
As shown in FIG. 3, the frame bent column is seriously damaged, and the reinforcing steel bars are exposed, so that the reinforcement is performed by adopting a reinforcing method with an increased section, and the concrete implementation method is that reinforcing plates are additionally arranged on the outer sides of the frame bent column, so that a pouring gap is formed between the reinforcing plates and the frame bent column, the periphery of the frame bent column is increased by 100mm, the increased longitudinal stress reinforcing steel bars are determined according to calculation, and the grouting material adopts H60 grouting material.
As shown in fig. 4 and 5, if the frame bent column is not seriously damaged, an outsourcing reinforcement method can be adopted; angle steel is arranged at four corners of the frame column, and can be fixed in an adhesive mode, the angle steel is L-shaped, the outer side is welded with a batten plate, and the inner side is filled with epoxy vertical slurry under pressure.
5) Frame beam reinforcement
The section size of the frame beam does not meet the requirement of bearing capacity, the steel bars of the beam are exposed in rust expansion, the strength grade of concrete is lower, the carbonization is serious, the frame beam is reinforced by adopting a reinforcing method for increasing the section or an externally-adhered steel plate method,
as shown in fig. 6, in the method for reinforcing the enlarged cross section of the frame beam in this embodiment, the width of each side of the beam is increased by 75mm, and the height is increased by 100mm, specifically, the filling gap is set by the set reinforcing plate, then the enlarged cross section is realized by filling H60 grouting material, and reinforcing steel bars are implanted correspondingly.
As shown in fig. 7, the method of bonding the frame beam to the outside is shown in this embodiment; the outer-packed steel is L100X 8, the batten plates are-100X 4, the spacing is 200/400, the steel is welded with angle steel, and epoxy resin slurry is poured between the steel and concrete under pressure.
The frame beam can also select an enlarged section reinforcing method and an external bonding steel plate reinforcing method according to the damage condition, wherein the enlarged section reinforcing method has the advantages of simple construction process, mature technology, large bearing capacity and rigidity improvement amplitude of the component, obvious reinforcing effect and lower cost; the reinforcement rule of the outer adhesive steel plate has the advantages of small occupied space, small damage to the outer vertical surface, convenient material transportation, small increase of dead weight and short construction and installation period.
The above detailed description is only a preferred embodiment of the present invention and is not intended to limit the scope of the claims, but all equivalent changes and modifications that can be made according to the protection scope of the claims are included in the scope of the claims.
Claims (8)
1. The hydraulic test hall danger-removing and reinforcing method is characterized by comprising the following steps of: the method comprises the following steps:
step S1: respectively sealing the gaps of the floor slab, the wall body, the roof and the floors of each layer in the hydraulic test hall according to the width of the gaps;
step S2: according to actual investigation conditions, wall reinforcement treatment is carried out on a reservoir of a hydraulic test hall in a manner of increasing cross section reinforcement, an increased reinforced wall body (1) is formed by pouring H60 grouting materials, the thickness of the reinforced wall body is set to be 100-200mm, longitudinal steel bars (2), transverse steel bars (3) and vertical steel bars (12) are planted in the reinforced wall body (1), the transverse steel bars (3) are transversely planted in the reservoir wall body (13) to be reinforced, and the vertical steel bars (12) are planted in the wall bodies on two sides;
step S3: in the step S1, after gap sealing treatment is carried out on a reservoir top plate (14), the reservoir top plate (14) is reinforced in a mode of increasing the cross section, a laminated plate (4) is arranged below the reservoir top plate (14), two ends of the laminated plate (4) are fixed on two side walls, a filling gap (5) is reserved between the laminated plate (4) and the reservoir top plate (14), and H60 grouting material is filled in the filling gap (5);
step S4: the reinforcement treatment is carried out on the frame column (6) in the hydraulic test hall by selecting an enlarged section reinforcement method or an external bonding steel plate reinforcement method according to the damage degree of the frame column (6);
step S5: and (3) selecting an enlarged section reinforcing method and an external bonding steel plate reinforcing method according to the damage degree of the frame beam (7) to carry out reinforcing treatment on the frame beam (7) in the hydraulic test hall.
2. The hydraulic test hall risk removal and reinforcement method according to claim 1, wherein: the reinforcing method for the increased cross section in the step S4 is specifically as follows: four reinforcing plates (8) corresponding to the positions are arranged outside the frame bent columns (6), the four reinforcing plates (8) are connected end to enclose the frame bent columns (6) inside, a filling gap (5) is reserved between the reinforcing plates (8) and the frame bent columns (6), transverse reinforcing steel bars (3) are further arranged on the reinforcing plates (8), the transverse reinforcing steel bars (3) are correspondingly implanted into the frame bent columns (6), longitudinal reinforcing steel bars (2) are further added between the transverse reinforcing steel bars (3), and H60 grouting materials are correspondingly filled in the filling gap (5).
3. The hydraulic test hall risk removal and reinforcement method according to claim 2, wherein: the reinforcing plate (8) inboard and frame bent post (6) on still all be provided with steel wire (68), steel wire (68) all stretch into in pouring gap (5), just steel wire (68) head all be provided with coupler body (69), when reinforcing plate (8) install in the outside of frame bent post (6), steel wire (68) on reinforcing plate (8) and steel wire (68) on frame bent post (6) are through coupler body (69) each other hooked connection.
4. The hydraulic test hall risk removal and reinforcement method according to claim 1, wherein: the wrapping reinforcement method in the step S4 specifically includes the following steps: four L-shaped stress angle steels (9) are additionally arranged at four corners of the frame bent column (6), a lacing plate (10) is welded between every two adjacent stress angle steels (9), the lacing plate (10) is welded at the outer side end face of the stress angle steel (9), a pouring gap (5) is reserved between the inner side of the lacing plate (10) and the frame bent column (6), the pouring gap (5) is located between two adjacent stress angle steels (9), and epoxy resin slurry is poured into the pouring gap (5) through pressure equipment.
5. The hydraulic test hall risk removal and reinforcement method according to claim 1, wherein: the reinforcing method for the increased cross section in the step S5 is specifically as follows: three reinforcing plates (8) which are integrally concave are arranged on the outer side of the frame beam (7), the upper ends of the reinforcing plates (8) are fixed on the top plate, filling gaps (5) are reserved between the reinforcing plates (8) and the frame beam (7), transverse reinforcing steel bars (3) and longitudinal reinforcing steel bars (2) which are crisscross in a longitudinal-transverse mode are arranged between the reinforcing plates (8) and the frame beam (7), the transverse reinforcing steel bars (3) are correspondingly implanted into the frame beam (7), and H60 grouting materials are correspondingly filled in the filling gaps (5).
6. The hydraulic test hall risk removal and reinforcement method according to claim 1, wherein: the external bonding steel plate reinforcement method in the step S5 specifically comprises the following steps: l-shaped outer-wrapping section steel (11) is arranged on two sides of the lower end of the frame beam (7) and two sides of the intersection of the upper end and the top plate in an adhesive manner, batten plates (10) are welded between the adjacent outer-wrapping section steel (11), pouring gaps (5) are formed between the inner sides of the corresponding batten plates (10) and the frame beam (7), and epoxy resin slurry is poured into the pouring gaps (5) through pressure equipment; the inner sides of the two outer-covered steel sections (11) positioned above are also provided with transverse steel bars (3), and the transverse steel bars (3) on two sides are correspondingly implanted into the frame beam (7).
7. The hydraulic test hall risk removal and reinforcement method according to claim 1, wherein: in the step S1, when the width of the crack is smaller than 0.2mm, a surface sealing method is adopted for treatment, dust and impurities on the surface of the concrete are required to be removed firstly, and the refractory paint and dirt with strong cohesiveness are removed by adopting a sand blasting method; when the surface of the irregular net-shaped crack is sealed, the substrate is required to be sprayed with water in advance, dirt or magazines are removed, and then the crack is uniformly coated by adopting a flexible sealing agent, wherein the thickness is set to be 1mm;
when the sealing width of the crack is not less than 0.2mm, the method of pouring epoxy resin slurry is adopted for treatment, firstly, the surface of the crack is cleaned up, the epoxy resin slurry is poured into the crack through pressure equipment, the mounting interval of the glue pouring nozzles is reasonable, the glue pouring nozzles are strictly operated according to the glue pouring sequence and operation requirement specification, the glue pouring is ensured to be compact, and the sealing of the surface of the crack is reliable.
8. The hydraulic test hall risk removal and reinforcement method according to claim 7, wherein: after the ground cracks are treated, the ground is required to be ground comprehensively, repaired and leveled, and after the surface is clean, epoxy resin primer, an epoxy mortar layer, a putty layer and a surface layer are sequentially coated, so that a new epoxy resin terrace is completed and maintained; in the step S2, the thickness of the added reinforced wall body (1) is 150mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310607596.0A CN116591498A (en) | 2023-05-26 | 2023-05-26 | Danger-removing reinforcement method for hydraulic test hall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310607596.0A CN116591498A (en) | 2023-05-26 | 2023-05-26 | Danger-removing reinforcement method for hydraulic test hall |
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| CN116591498A true CN116591498A (en) | 2023-08-15 |
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| CN202310607596.0A Pending CN116591498A (en) | 2023-05-26 | 2023-05-26 | Danger-removing reinforcement method for hydraulic test hall |
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| Country | Link |
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| CN (1) | CN116591498A (en) |
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