CN105421810B - Prefabricated wallboard reinforced masonry structure and construction method thereof - Google Patents
Prefabricated wallboard reinforced masonry structure and construction method thereof Download PDFInfo
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- CN105421810B CN105421810B CN201510945473.3A CN201510945473A CN105421810B CN 105421810 B CN105421810 B CN 105421810B CN 201510945473 A CN201510945473 A CN 201510945473A CN 105421810 B CN105421810 B CN 105421810B
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- 238000010276 construction Methods 0.000 title abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 77
- 239000010959 steel Substances 0.000 claims abstract description 77
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 23
- 238000003466 welding Methods 0.000 claims abstract description 15
- 239000000853 adhesive Substances 0.000 claims abstract description 14
- 230000001070 adhesive effect Effects 0.000 claims abstract description 14
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 11
- 210000001503 joint Anatomy 0.000 claims abstract description 5
- 239000004567 concrete Substances 0.000 claims description 32
- 238000000034 method Methods 0.000 claims description 12
- 239000004570 mortar (masonry) Substances 0.000 claims description 12
- 230000005484 gravity Effects 0.000 claims description 11
- 238000005553 drilling Methods 0.000 claims description 9
- 239000000428 dust Substances 0.000 claims description 9
- 230000002457 bidirectional effect Effects 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 3
- 239000002356 single layer Substances 0.000 claims description 3
- 239000002344 surface layer Substances 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000002787 reinforcement Effects 0.000 abstract description 13
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 238000012827 research and development 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
- E04G23/0222—Replacing or adding wall ties
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- 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)
- Working Measures On Existing Buildindgs (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention relates to a prefabricated wallboard reinforced masonry structure and a construction method thereof, belonging to the technical field of old building reinforcement. The newly added prefabricated wallboard is welded by connecting reinforcing steel bars at the beam edge of the original ring beam; the connecting steel bars penetrate through the floor slab and are fixed by structural adhesive; the newly added prefabricated wallboard is welded at the top of the storey by adopting a through-length steel bar and a beam edge cast-out steel bar in a lap joint manner; the through length reinforcing steel bar passes through the original ring beam and is fixed by the structural adhesive; the newly added prefabricated wallboard is reserved with a toothed joint at the original constructional column; and the newly added prefabricated wallboard throws out the reinforcing steel bars from the column edges of the original constructional column for lap welding, and the constructional column is newly added at the butt joint of the newly added prefabricated wallboard. On the basis of solving the problem of reinforcing the original masonry structure, the invention realizes simple construction, less wet operation, reasonable stress of the reinforcing structure, effective force transmission path and reliable connection.
Description
Technical Field
The invention relates to reinforcement of an existing masonry structure and a method thereof, in particular to a prefabricated wallboard reinforced masonry structure and a construction method thereof, and belongs to the technical field of reinforcement.
Background
In the seventh and eighties of the last century, masonry structure buildings should be considered, but these masonry structure buildings have defects of unreasonable earthquake-resistant design, poor construction quality, weak earthquake-resistant performance and the like, so they collapse or are damaged in a large area in recent earthquake damage. In order to ensure the use safety of the buildings, the reinforcement of the existing masonry structure building is economical and reasonable. With the research and development of reinforcement technology, various reinforcement methods have been applied in practical engineering, such as a panel wall reinforcement method, a carbon fiber reinforcement method, a glass fiber reinforcement method, etc. However, these reinforcement methods have a certain limitation, such as a large number of wet operations and a long construction period, which affects the use of households. In order to reduce the construction period and reduce the influence of construction on households, a method for reinforcing a masonry structure wall by adopting prefabricated wallboards is provided.
Disclosure of Invention
Based on the problems, the invention provides a prefabricated wallboard reinforced masonry structure and a construction method thereof. The method mainly aims to solve the technical problems that an old masonry structure is unsafe, the construction period of a traditional reinforcement method is long, the use of residents is affected, and an original structure needs to be reinforced by adopting a prefabricated structure.
The technical scheme of the invention is as follows:
the utility model provides a prefabricated wallboard consolidates brickwork structure, includes former constructional column, former collar tie beam, former brickwork wall, still includes former prefabricated wallboard, the bolt hole of former brickwork wall, wherein, adopt gravity mortar and pass the bolted connection of bolt hole between new prefabricated wallboard and the former brickwork wall; the newly-added prefabricated wallboard is provided with two-way reinforcing bars on one side, and vertical reinforcing bars in the two-way reinforcing bars are arranged on the outer sides of the horizontal reinforcing bars; the newly added prefabricated wallboard is provided with cast-out steel bars around the boards; the newly added prefabricated wallboard is welded by connecting reinforcing steel bars at the beam edge of the original ring beam, and concrete is poured; the connecting steel bars penetrate through the floor slab and are fixed by structural adhesive; the newly added prefabricated wallboard is welded at the top of the storey by adopting a through-length steel bar and a beam edge cast-out steel bar in a lap joint manner; the through long steel bars pass through the original ring beam and are fixed by structural adhesive; the newly added prefabricated wallboard is reserved with a joint at the original constructional column; and the newly added prefabricated wallboard is thrown out of the steel bar lap joint welding at the column edge of the original constructional column, and the constructional column is newly added at the butt joint of the newly added prefabricated wallboard.
Further, a gap of 20mm is reserved between the newly-added prefabricated wall plate and the original masonry wall, and the gap is filled with gravity mortar rapidly, namely the thickness of the gravity mortar is 20mm.
Further, the thickness of the newly-added prefabricated wallboard is 100mm, C30 concrete casting is adopted, and single-layer bidirectional matching is carried outReinforcing steel bars.
Further, the concrete is poured by C35 micro-expansion concrete.
Further, the teeth are retracted into the wall body for a certain period every 300mm, and the teeth are advanced and retracted.
Further, the welding length of the beam edge cast-out steel bars and the column edge cast-out steel bars is not less than 80mm.
Further, the newly-added constructional column is provided with column angle steel bars and stirrups.
Further, the column angle steel bar isReinforcing steel bar with stirrup as->
Further, holes on the periphery of the bolts are filled with filling materials.
The construction method of the prefabricated wallboard reinforced masonry structure comprises the following steps:
step one: chiseling out a surface layer of the original structure, positioning bolt holes according to design files, and drilling;
step two: dust in the bolt holes is removed, clean and impurity-free bolt holes are guaranteed, the newly added prefabricated wall boards are positioned and then positioned, and the inclination rate and the position deviation of the newly added prefabricated wall boards are guaranteed to be in an allowable range;
step three: inserting bolts, filling holes in the periphery of the bolts by using a filler Kong Liao, rapidly filling gravity mortar for filling gaps between the newly-added prefabricated wall boards and the original masonry wall, and screwing nuts to ensure reliable connection between the newly-added prefabricated wall boards and the original masonry wall;
step four: binding newly added constructional column steel bars, throwing out the steel bars from the column edges of the newly added prefabricated wall boards, welding the steel bars together, pouring concrete of the constructional column after the steel bars are finished, and removing the mould after the concrete reaches the design strength;
step five: drilling holes at corresponding positions on the floor slab according to the positions and the sizes of the connecting steel bars, removing dust in the holes, implanting the connecting steel bars and fixing the connecting steel bars by using structural adhesive, throwing out the connecting steel bars and the beam edges to weld the steel bars, pouring concrete after the connection steel bars and the beam edges are finished, and removing the mould after the concrete reaches the design strength;
step six: drilling holes at the corresponding positions of the original ring beams at the top of the storey, implanting through long steel bars after dust removal, fixing the through long steel bars by structural adhesive, respectively throwing out the steel bars from two sides of the through long steel bars and beam edges, welding the steel bars, pouring concrete after the steel bars are finished, and removing the mould after the concrete reaches the design strength.
The beneficial effects are that:
the invention has the most remarkable advantages that the prefabricated wallboard is adopted to reinforce the masonry structure, so that the influence on the daily life of residents is small, the construction is simple, the wet operation is less, the force transmission path is definite, the connection is reliable, the upper vertical load can be shared on the prefabricated wallboard, the structure is also favorable for earthquake resistance, and the method is safe and reliable. It is expected that the adoption of prefabricated wall panels to strengthen masonry structures in existing older masonry houses would be of significant practical significance if the technology were to be generalized and applied under conditions of economic approval.
Drawings
FIG. 1 is a schematic view of the structure of a prefabricated wall panel reinforced masonry of the present invention;
FIG. 2 is a schematic view of the locations of prefabricated wall panel rebar;
FIG. 3 is a cross-sectional view of section A-A of FIG. 1;
fig. 4 is a sectional view of B-B of fig. 1.
In the figure, 1: a primary constructional column; 2: a primary ring beam; 3: bolt holes; 4: an original masonry wall; 5: newly adding a prefabricated wallboard; 6: a bolt; 7: filling Kong Liao; 8: the beam edge throws out the steel bar; 9: connecting steel bars; 10: concrete; 11: gravity mortar; 12: a reinforcing steel bar is extended; 13: newly added constructional columns; 14: column angle steel bars; 15: the column edge throws out the steel bar; 16: stirrups; 17: vertical steel bars; 18: horizontal steel bars; 19: and (5) a toothed comb.
Detailed Description
The invention relates to a prefabricated wallboard reinforced masonry structure, which is shown in figures 1 to 4, and comprises an original constructional column 1, an original ring beam 2, an original masonry wall 4, and further comprises a newly-added prefabricated wallboard 5 and bolt holes 3 (shown in figure 1) on the original masonry wall 4, wherein the newly-added prefabricated wallboard 5 is connected with the original masonry wall 4 through bolts 6 and gravity mortar 11, holes at the periphery of the bolts 6 are filled with filling materials 7, and one side of the newly-added prefabricated wallboard 5 is provided with bidirectional reinforcement bars and is verticalThe reinforcing steel bars 17 are arranged on the outer side of the horizontal reinforcing steel bars 18 (shown in figure 2), the newly-added prefabricated wall boards 5 are respectively provided with cast-out reinforcing steel bars around the boards, the cast-out reinforcing steel bars 8 of the newly-added prefabricated wall boards 5 at the beam edges of the original ring beams 2 are welded by the connecting reinforcing steel bars 9, after welding, concrete 10 is poured, the connecting reinforcing steel bars 9 penetrate through floors and are fixed by structural adhesives, the newly-added prefabricated wall boards 5 are welded by the through-length reinforcing steel bars 12 and the beam edges cast-out reinforcing steel bars 8 at the tops of floors in a lap joint manner, the through-length reinforcing steel bars 12 penetrate through the original ring beams 2 and are fixed by the structural adhesives (shown in figure 3), the horseshoe 19 is reserved at the original constructional columns 1 by the newly-added prefabricated wall boards 5, the column edges of the original constructional columns 1 are welded by the lap joint manner by the reinforcing steel bars 15, the newly-added constructional columns 13 are provided with column angle reinforcing steel bars 14 and hoops 16 at the butt joint positions of the newly-added prefabricated wall boards 5 (shown in figure 4), 20mm gap mortar is reserved between the newly-added prefabricated wall boards 5 and the original wall boards 4, and the newly-added prefabricated wall boards are poured by adopting a quick filling gap of 11, and the single-layer precast concrete is 100mm, and the bidirectional concrete is prepared by 100mm, and the bidirectional pouring is performed by adopting the bidirectional concreteThe steel bars, the concrete 10 adopts C35 micro-expansion concrete pouring, the toothed bars 19 retract into the wall body for one section every 300mm, the toothed bars advance and retreat, the welding length of the beam edge throwing steel bars 8 and the column edge throwing steel bars 15 is not less than 80mm, and the column angle steel bars 14 are->Reinforcing steel bar, stirrup 16->
The adoption prefabricated wallboard reinforcement brickwork structure adopts following step:
step one: chiseling out the surface layer of the original structure, positioning and drilling the bolt holes 3 according to the design file;
step two: dust in the bolt holes 3 is removed, clean and impurity-free bolt holes 3 are guaranteed, the newly added prefabricated wall boards 5 are positioned and then positioned, and the inclination rate and the position deviation of the newly added prefabricated wall boards 5 are guaranteed to be in an allowable range;
step three: inserting a bolt 6, filling holes around the bolt 6 with a filling material 7, filling gaps between the newly-added prefabricated wall board 5 and the original masonry wall 4 by adopting rapid filling gravity mortar 11, and tightening nuts to ensure reliable connection between the newly-added prefabricated wall board 5 and the original masonry wall 4;
step four: binding the steel bars of the newly-added constructional column 13, throwing out the steel bars from the column edges of the newly-added prefabricated wall boards 5, welding the steel bars together, pouring concrete of the newly-added constructional column 13 after the steel bars are finished, and removing the mould after the concrete reaches the design strength;
step five: drilling holes at corresponding positions on the floor according to the positions and the sizes of the connecting steel bars 9, removing dust in the holes, implanting the connecting steel bars 9 and fixing the connecting steel bars by using structural adhesive, throwing out the connecting steel bars 9 and beam edges from the steel bars 8 for welding, pouring concrete 10 after the connecting steel bars 9 are completely welded, and removing the mould after the concrete 10 reaches the design strength;
step six: drilling holes at the corresponding positions of the original ring beams 2 at the top of the storey, removing dust, then implanting through long steel bars 12, fixing by structural adhesive, throwing out the steel bars 8 from the two sides of the through long steel bars 12 at the beam edges respectively for welding, pouring concrete 10 after the completion, and removing the mould after the concrete reaches the design strength.
The above is an exemplary embodiment of the present invention, and the implementation of the present invention is not limited thereto.
Claims (10)
1. The utility model provides a brickwork structure is consolidated to prefabricated wallboard, includes former constructional column (1), former collar tie beam (2), former brickwork wall (4), its characterized in that: the novel prefabricated wall plate comprises a main masonry wall (4), and is characterized by further comprising a novel prefabricated wall plate (5) and a bolt hole (3) on the main masonry wall (4), wherein the novel prefabricated wall plate (5) is connected with the main masonry wall (4) by adopting gravity mortar (11) and bolts (6) penetrating through the bolt hole (3); the single-sided configuration of the newly-added prefabricated wallboard (5) is provided with two-way reinforcing bars, and vertical reinforcing bars (17) in the two-way reinforcing bars are arranged on the outer sides of the horizontal reinforcing bars (18); the newly added prefabricated wallboard (5) is provided with cast-out steel bars around the boards; the beam Bian Shuaichu steel bars (8) of the newly added prefabricated wallboard (5) at the original ring beam (2) are welded by adopting connecting steel bars (9), and concrete (10) is poured; the connecting steel bars (9) penetrate through the floor slab and are fixed by structural adhesive; the newly added prefabricated wallboard (5) is welded at the top of the storey by overlapping a through-length steel bar (12) and a beam edge throwing steel bar (8); the through long steel bars (12) penetrate through the primary ring beam (2) and are fixed by structural adhesive; the newly added prefabricated wallboard (5) is reserved with a tooth-shaped joint (19) at the original constructional column (1); and the newly added prefabricated wallboard (5) throws out the reinforcing steel bars (15) from the column edges of the original constructional column (1) for lap welding, and the constructional column (13) is newly added at the butt joint position of the newly added prefabricated wallboard (5).
2. The prefabricated wall panel reinforced masonry structure according to claim 1, wherein: a gap of 20mm is reserved between the newly-added prefabricated wall plate (5) and the original masonry wall (4), and the gap is filled by adopting quick filling gravity mortar (11), namely, the thickness of the gravity mortar (11) is 20mm.
3. The prefabricated wall panel reinforced masonry structure according to claim 1, wherein: the thickness of the newly added prefabricated wallboard (5) is 100mm, C30 concrete casting is adopted, and single-layer bidirectional matching is carried outReinforcing steel bars.
4. The prefabricated wall panel reinforced masonry structure according to claim 1, wherein: the concrete (10) is poured by C35 micro-expansion concrete.
5. The prefabricated wall panel reinforced masonry structure according to claim 1, wherein: the toothed joints (19) retract into the wall body for a certain period every 300mm, and advance and retreat.
6. The prefabricated wall panel reinforced masonry structure according to claim 1, wherein: the welding length of the beam edge throwing-out reinforcing steel bar (8) and the column edge throwing-out reinforcing steel bar (15) is not less than 80mm.
7. The prefabricated wall panel reinforced masonry structure according to claim 1, wherein: the newly-added constructional column (13) is provided with column angle steel bars (14) and stirrups (16).
8. The prefabricated wall panel reinforced masonry structure according to claim 7, wherein: the column angle steel bar (14) isThe steel bar and the stirrup (16) are +.>
9. The prefabricated wall panel reinforced masonry structure according to claim 1, wherein: holes in the periphery of the bolts (6) are filled by using a filler Kong Liao (7).
10. A method of constructing a prefabricated wall panel reinforced masonry structure according to any one of claims 1-9, wherein: the method comprises the following steps:
step one: chiseling out the surface layer of the original structure, positioning and drilling a bolt hole (3) according to the design file;
step two: dust in the bolt holes (3) is removed, clean and impurity-free bolt holes (3) are guaranteed, the newly added prefabricated wall plates (5) are positioned and then positioned, and the inclination rate and the position deviation of the newly added prefabricated wall plates (5) are guaranteed to be in an allowable range;
step three: inserting bolts (6), filling holes around the bolts (6) by using a filler Kong Liao (7), filling gaps between the newly added prefabricated wallboard (5) and the original masonry wall (4) by using rapid filling gravity mortar (11), and tightening nuts to ensure reliable connection between the newly added prefabricated wallboard (5) and the original masonry wall (4);
step four: binding the steel bars of the newly added constructional column (13), throwing out the steel bars (15) from the column edges of the newly added prefabricated wallboard (5), welding the steel bars together, pouring concrete of the newly added constructional column (13) after the steel bars are finished, and removing the mould after the concrete reaches the design strength;
step five: drilling holes at corresponding positions on the floor according to the positions and the sizes of the connecting steel bars (9), removing dust in the holes, implanting the connecting steel bars (9) and fixing the connecting steel bars with structural adhesive, throwing out the connecting steel bars (9) and beam edges from the steel bars (8), welding, pouring concrete (10) after the connecting steel bars are finished, and removing the mould after the concrete (10) reaches the design strength;
step six: drilling holes at the corresponding positions of the original ring beams (2) at the tops of floors, implanting through long steel bars (12) after dust removal, fixing the steel bars by structural adhesive, throwing out the steel bars (8) from the two sides of the through long steel bars (12) and the edges of the beams respectively for welding, pouring concrete (10) after the steel bars are finished, and removing the mould after the concrete reaches the design strength.
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| CN201510945473.3A CN105421810B (en) | 2015-12-17 | 2015-12-17 | Prefabricated wallboard reinforced masonry structure and construction method thereof |
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| CN201510945473.3A CN105421810B (en) | 2015-12-17 | 2015-12-17 | Prefabricated wallboard reinforced masonry structure and construction method thereof |
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| CN105421810A CN105421810A (en) | 2016-03-23 |
| CN105421810B true CN105421810B (en) | 2023-11-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106801517B (en) * | 2016-12-13 | 2020-06-16 | 宇杰集团股份有限公司 | External reinforcing and reinforcing method for school shed with prefabricated porous plate brick mixed structure |
| CN108360839A (en) * | 2018-03-26 | 2018-08-03 | 桂林理工大学 | A kind of old wall hardened system and its construction method |
| CN108952018B (en) * | 2018-08-13 | 2020-03-27 | 南京工业大学 | Reinforcing structure with disconnected sleeve grouting connecting steel bars inside prefabricated shear wall component and construction method thereof |
| CN109488037A (en) * | 2018-11-19 | 2019-03-19 | 沙洲职业工学院 | A kind of environmental protection construction method that private residence is quickly rebuild |
| CN110067401A (en) * | 2019-03-25 | 2019-07-30 | 北京筑福国际抗震技术有限责任公司 | A kind of existing masonry structure is reinforced using prefabricated board wall and its construction method |
| CN114517595B (en) * | 2022-03-10 | 2023-12-08 | 山东省建筑科学研究院有限公司 | Assembled reinforced existing masonry structure system and construction method thereof |
| CN115478706A (en) * | 2022-09-05 | 2022-12-16 | 中建八局第三建设有限公司 | Construction method for widening corridor with cantilever structure |
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