CN105464399A - Prefabricated checkered plate steel truss strengthening reinforced concrete frame beam structure and strengthening method - Google Patents
Prefabricated checkered plate steel truss strengthening reinforced concrete frame beam structure and strengthening method Download PDFInfo
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- CN105464399A CN105464399A CN201510975115.7A CN201510975115A CN105464399A CN 105464399 A CN105464399 A CN 105464399A CN 201510975115 A CN201510975115 A CN 201510975115A CN 105464399 A CN105464399 A CN 105464399A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
- E04G23/0237—Increasing or restoring the load-bearing capacity of building construction elements of storey floors
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Abstract
The invention provides a prefabricated checkered plate steel truss strengthening reinforced concrete frame beam structure and a strengthening method, and belongs to the technical field of building engineering. The reinforced concrete frame beam structure comprises a frame beam which is supported by frame columns at interval. The cross section of the frame beam is in a T-shaped structure. The structure also comprises a floor slab, checkered plate steel trusses, angle iron, L-shaped end plates, bolts, and nuts. The floor slab is on the frame beam. The floor slab and the frame beam are connected through the L-shaped end plates, the bolts, and the nuts. The checkered plate steel trusses are arranged along the side surfaces of the frame beam between the concrete frame columns, and are welded integrally with the angle iron on the lower end of the frame beam, and butt joint parts are reserved with connecting bolt holes. The structure has low damage degree on self structure of the concrete beam, and forms integrally with an original concrete frame beam, and integral performance is good. By using the characteristics that rigidity and concrete compression strength of the original concrete frame beam are high, characteristic that the prefabricated checkered plate steel trusses are high in strength is developed, and shearing resistance and bending resistance of the original concrete frame beam are improved.
Description
Technical field
The invention belongs to construction engineering technical field, particularly relate to a kind of predetermined pattern slab truss reinforcement rc-frame-beam structure and reinforcement means.
Background technology
Concrete beam is concrete frame structure, shear wall structure, the important Force transmission parts of frame shear wall structure, and load between plate is delivered to concrete column or concrete wall, mainly stressedly act as bending resistance, shearing resistance.This kind of frame mode is mainly used in one of following situation, and one is that old building reaches or is on the verge of the military service phase, and the strength of materials is degenerated, and the bending resistance of former concrete frame beam or shear-carrying capacity do not meet building to be continued to use; Two is after building breaking out of fire, and concrete beam material carbonation intension reduces, and even comes off, and does not meet normal use, is badly in need of bearing capacity reparation or structural strengthening; Three is that existing building using function changes, and flooring or roof load strengthen, and former concrete structured beam does not meet requirement for bearing capacity.Predetermined pattern slab truss reinforcement rc-frame-beam structure, form entirety by external assembling mode steel work and concrete beam, use former concrete beam stiffness by itself, play the two-way oblique pull of feature of steel work high strength, two ends shearing resistance, the two combines the advantage playing respective material.This structure energy accelerating construction progress, reduces on-the-spot wet trade, and improve building structure quality, the reduction of erection time, energy-saving and emission-reduction significantly improve durability, the shock resistance of structure, and economic benefit is obvious.
Along with the develop rapidly of building trade, more and more higher to the requirement of Antiseismic building, the building in a lot of one's early years can not meet present code requirement, and structure is under the effect of long-term environment for use and natural environment, it is functional inevitable weak gradually, concrete structure must by scientifically evaluation structure degree of injury and objective law, and take effective reinforcement measure holding structure can continue safe use.
Summary of the invention
For the technical problem of above-mentioned existence, the invention provides a kind of predetermined pattern slab truss reinforcement rc-frame-beam structure and reinforcement means.Consolidation effect of the present invention is good, and highly versatile is convenient and practical, and energy accelerating construction progress, reduces on-the-spot wet trade, improves building structure quality, the reduction of erection time.
The object of the invention is to be achieved through the following technical solutions:
A kind of predetermined pattern slab truss reinforcement rc-frame-beam structure, comprise the Vierendeel girder supported by frame column interval, the cross section of Vierendeel girder is T-type structure, comprise floor, diamond plate steel truss, angle steel, L-type end plate, bolt and nut, described floor is placed in above Vierendeel girder, be connected by L-type end plate and bolt and nut between floor with Vierendeel girder, described diamond plate steel truss is along the Vierendeel girder side arrangement of concrete frame intercolumniation, and being welded into entirety with the angle steel of Vierendeel girder lower end, butted part reserves link bolt hole.
Further, described concrete frame beam and frame column Nodes are by joint anchorage steel plate reinforcement.
Further, described concrete frame beam lower end is also provided with stiffening rib.
Further, described predetermined pattern slab plate thickness is 3 ~ 20mm, and width is 10 ~ 50mm, is 45 ° with horizon angle, is interweaved into latticed, and upper/lower terminal is reserved bolted band hole end plate respectively.
Further, described predetermined pattern slab plate along the elongated layout in Vierendeel girder side, or is arranged along Vierendeel girder side near the two ends of frame column.
A reinforcement means for predetermined pattern slab truss reinforcement rc-frame-beam structure, comprises the steps:
Step one: dabbing process is carried out to concrete frame beam, concrete floor carries out hole and reserves, and the node of concrete frame beam and frame column is holed, and rinses well after boring with clear water, then dry with clean cotton, squeeze into A level structure glue and carry out bar planting construction;
Step 2: according to concrete frame beam real size and internal force result of calculation, predetermined pattern slab truss, diamond plate steel truss is welded with anchor slab, the end plate side inserting bolt of corresponding band hole, opposite side is fixed to tighten and penetrates concrete floor by bolt, pour into pea gravel concreten or grouting material does joint filling process, place pad, with fastening nuts;
Step 3: to the process of concrete floor surface layer, cement mortar screeding, laying floor or ceramic tile, plaster to concrete frame beam surface or decorate process.
Further, describedly carry out dabbing process to concrete frame beam, its dabbing degree of depth is 5 ~ 10mm, and the spacing of dabbing trace is 10 ~ 30mm.
Further, the right angle corner angle of described concrete frame beam bottom connecting angle carry out grinding process by sand paper, and being processed into chamfer radius is 10 ~ 30mm, rinses well with clear water simultaneously, dry with dry cotton, the contact surface of predetermined pattern slab truss lower angle Steel concrete Vierendeel girder is fitted.
Further, described concrete frame beam is connected with frame column node and adopts anchor slab to construct, and squeezes into concrete frame trestle be fixed by bar planting mode.
Beneficial effect of the present invention is:
1. the present invention is as the structure of building concrete beam, and draw materials conveniently, make simple possible, overall performance is good, applied range, and economic benefit is good.
2. the present invention is the form of external prefabricated reinforced concrete beam, and the destructiveness for concrete beam self structure is less, and form one with original concrete frame beam, overall performance is good.
3. the present invention uses the stiffness by itself of former concrete frame beam, the feature high with concrete crushing strength, and play the feature that predetermined pattern slab truss intensity is high, improve the shearing resistance of former concrete frame beam, bending resistance, both bring out the best in each other.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention 1.
Fig. 2 is the A-A sectional drawing of Fig. 1.
Fig. 3 is the structural representation of the embodiment of the present invention 2.
In figure: 1. frame column, 2. Vierendeel girder, 3. floor, 4. building coats, 5. anchor slab, 6. diamond plate steel truss, 7. end plate, 8. bolt, 9.L type end plate, 10. angle steel, 11. stiffening ribs.
Detailed description of the invention
Describe the present invention below in conjunction with drawings and Examples.
Embodiment: as Fig. 1, shown in Fig. 2, a kind of predetermined pattern slab of the present invention truss reinforcement rc-frame-beam structure, comprise the Vierendeel girder 2 supported by frame column 1 interval, the cross section of Vierendeel girder 2 is T-type structure, comprise floor 3, diamond plate steel truss 6, angle steel 10, L-type end plate 9, bolt 8 and nut, described floor 3 is placed in above Vierendeel girder 2, be connected by L-type end plate 9 and bolt and nut between floor 3 with Vierendeel girder 2, described diamond plate steel truss 6 is along Vierendeel girder 2 side arrangement between concrete frame trestle 1, and be welded into entirety with the angle steel 10 of Vierendeel girder 2 lower end, butted part reserves link bolt hole.
Described concrete frame beam 2 and frame column 1 Nodes are by joint anchorage steel plate reinforcement.Described concrete frame beam 2 lower end is also provided with stiffening rib 11.Described predetermined pattern slab plate 6 thickness is 3 ~ 20mm, and width is 10 ~ 50mm, is 45 ° with horizon angle, is interweaved into latticed, and upper/lower terminal is reserved bolted band hole end plate respectively.Described predetermined pattern slab plate 6 is along the elongated layout in Vierendeel girder 2 side.
Reinforcement means of the present invention, comprises the steps:
Step one: dabbing process is carried out to concrete frame beam 2, concrete floor 3 carries out hole and reserves, and the node of concrete frame beam 2 and frame column 1 is holed, and rinses well after boring with clear water, then dry with clean cotton, squeeze into A level structure glue and carry out bar planting construction;
Step 2: according to concrete frame beam 2 real size and internal force result of calculation, predetermined pattern slab truss 6, diamond plate steel truss 6 is welded with anchor slab, the end plate side inserting bolt 8 of corresponding band hole, opposite side is fixed to tighten and penetrates concrete floor 3 by bolt 8, pour into pea gravel concreten or grouting material does joint filling process, place pad, with fastening nuts;
Step 3: to the process of concrete floor 3 surface layer, cement mortar screeding, laying floor or ceramic tile, plaster to concrete frame beam 2 surface or decorate process.
Describedly carry out dabbing process to concrete frame beam 2, its dabbing degree of depth is 5 ~ 10mm, and the spacing of dabbing trace is 10 ~ 30mm.
The right angle corner angle sand paper of described concrete frame beam 2 bottom connecting angle 10 carries out grinding process, being processed into chamfer radius is 10 ~ 30mm, rinse well with clear water simultaneously, dry with dry cotton, facilitate the contact surface laminating of predetermined pattern slab truss 6 lower angle Steel concrete Vierendeel girder 2 fully.
Described concrete frame beam 2 is connected with frame column 1 node and adopts anchor slab to construct, and squeezes into concrete frame trestle 1 be fixed by bar planting mode.Facilitate end anchor slab 5 and predetermined pattern slab truss 6, object is overall stressed.
Embodiment 2: as shown in Figure 3, this example as different from Example 1: arrange predetermined pattern slab truss 6 along Vierendeel girder 2 side near the two ends of frame column 1 in this example; Weld beam column anchor slab 5, play temporary support effect, the band hole end plate 7 side inserting bolt 8 of contraposition, opposite side is fixed to be tightened simultaneously.
Claims (9)
1. a predetermined pattern slab truss reinforcement rc-frame-beam structure, comprise the Vierendeel girder supported by frame column interval, it is characterized in that: the cross section of Vierendeel girder is T-type structure, comprise floor, diamond plate steel truss, angle steel, L-type end plate, bolt and nut, described floor is placed in above Vierendeel girder, be connected by L-type end plate and bolt and nut between floor with Vierendeel girder, described diamond plate steel truss is along the Vierendeel girder side arrangement of concrete frame intercolumniation, and being welded into entirety with the angle steel of Vierendeel girder lower end, butted part reserves link bolt hole.
2. predetermined pattern slab truss reinforcement rc-frame-beam structure according to claim 1, is characterized in that: described concrete frame beam and frame column Nodes are by joint anchorage steel plate reinforcement.
3. predetermined pattern slab truss reinforcement rc-frame-beam structure according to claim 1, is characterized in that: described concrete frame beam lower end is also provided with stiffening rib.
4. predetermined pattern slab truss reinforcement rc-frame-beam structure according to claim 1, it is characterized in that: described predetermined pattern slab plate thickness is 3 ~ 20mm, width is 10 ~ 50mm, it is 45 ° with horizon angle, be interweaved into latticed, upper/lower terminal is reserved bolted band hole end plate respectively.
5. predetermined pattern slab truss reinforcement rc-frame-beam structure according to claim 1, is characterized in that: described predetermined pattern slab plate along the elongated layout in Vierendeel girder side, or is arranged along Vierendeel girder side near the two ends of frame column.
6. a reinforcement means for predetermined pattern slab truss reinforcement rc-frame-beam structure, is characterized in that: comprise the steps:
Step one: dabbing process is carried out to concrete frame beam, concrete floor carries out hole and reserves, and the node of concrete frame beam and frame column is holed, and rinses well after boring with clear water, then dry with clean cotton, squeeze into A level structure glue and carry out bar planting construction;
Step 2: according to concrete frame beam real size and internal force result of calculation, predetermined pattern slab truss, diamond plate steel truss is welded with anchor slab, the end plate side inserting bolt of corresponding band hole, opposite side is fixed to tighten and penetrates concrete floor by bolt, pour into pea gravel concreten or grouting material does joint filling process, place pad, with fastening nuts;
Step 3: to the process of concrete floor surface layer, cement mortar screeding, laying floor or ceramic tile, plaster to concrete frame beam surface or decorate process.
7. the reinforcement means of predetermined pattern slab truss reinforcement rc-frame-beam structure as claimed in claim 6, is characterized in that: describedly carry out dabbing process to concrete frame beam, and its dabbing degree of depth is 5 ~ 10mm, and the spacing of dabbing trace is 10 ~ 30mm.
8. the reinforcement means of predetermined pattern slab truss reinforcement rc-frame-beam structure as claimed in claim 6, it is characterized in that: the right angle corner angle of described concrete frame beam bottom connecting angle carry out grinding process by sand paper, being processed into chamfer radius is 10 ~ 30mm, rinse well with clear water simultaneously, dry with dry cotton, the contact surface of predetermined pattern slab truss lower angle Steel concrete Vierendeel girder is fitted.
9. the reinforcement means of predetermined pattern slab truss reinforcement rc-frame-beam structure as claimed in claim 6, it is characterized in that: described concrete frame beam is connected with frame column node and adopts anchor slab to construct, and squeezes into concrete frame trestle be fixed by bar planting mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510975115.7A CN105464399A (en) | 2015-12-23 | 2015-12-23 | Prefabricated checkered plate steel truss strengthening reinforced concrete frame beam structure and strengthening method |
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| CN201510975115.7A CN105464399A (en) | 2015-12-23 | 2015-12-23 | Prefabricated checkered plate steel truss strengthening reinforced concrete frame beam structure and strengthening method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106271065A (en) * | 2016-08-09 | 2017-01-04 | 郭颂怡 | The slag container of beams of concrete |
| CN106382015A (en) * | 2016-10-13 | 2017-02-08 | 浙江绿城建筑设计有限公司 | Anti-seismic overlapping structure used for existing-structure large-span stressed beam reinforcement and construction method |
| CN106907019A (en) * | 2017-04-28 | 2017-06-30 | 福州大学 | A kind of joint reinforcing device and its construction method for cross beam |
| CN109252691A (en) * | 2018-10-19 | 2019-01-22 | 沈阳建筑大学 | A kind of reinforced steel concrete framed floor structure and reinforcement means |
| CN110878641A (en) * | 2019-12-10 | 2020-03-13 | 赵枫 | Reinforcing structure adopting superimposed hollow floor slab grid system and new construction method |
| CN111140031A (en) * | 2020-01-20 | 2020-05-12 | 浙江汉林建筑设计有限公司 | Shear reinforcement structure that shears in concrete shear force wall even roof beam and wall beam connected node region |
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| CN103075019A (en) * | 2012-11-09 | 2013-05-01 | 河南省建设集团有限公司 | Dismountable steel truss system for reinforcing concrete framework and construction method of dismountable steel truss system |
| JP2014058784A (en) * | 2012-09-14 | 2014-04-03 | Sanyo Homes Corp | Floor surface rigid member and reinforcing method of beam surrounding open ceiling |
| CN205531422U (en) * | 2015-12-23 | 2016-08-31 | 沈阳建筑大学建筑设计研究院 | Reinforced concrete frame girder construction is consolidated to prefabricated checkered plate steel truss |
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Patent Citations (5)
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| CN101392600A (en) * | 2007-09-20 | 2009-03-25 | 贵阳铝镁设计研究院 | Trussed-beam steel beam reinforcing structure |
| JP2014058784A (en) * | 2012-09-14 | 2014-04-03 | Sanyo Homes Corp | Floor surface rigid member and reinforcing method of beam surrounding open ceiling |
| CN103075019A (en) * | 2012-11-09 | 2013-05-01 | 河南省建设集团有限公司 | Dismountable steel truss system for reinforcing concrete framework and construction method of dismountable steel truss system |
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| CN205531422U (en) * | 2015-12-23 | 2016-08-31 | 沈阳建筑大学建筑设计研究院 | Reinforced concrete frame girder construction is consolidated to prefabricated checkered plate steel truss |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106271065A (en) * | 2016-08-09 | 2017-01-04 | 郭颂怡 | The slag container of beams of concrete |
| CN106382015A (en) * | 2016-10-13 | 2017-02-08 | 浙江绿城建筑设计有限公司 | Anti-seismic overlapping structure used for existing-structure large-span stressed beam reinforcement and construction method |
| CN106382015B (en) * | 2016-10-13 | 2018-10-26 | 上海杰地建筑设计有限公司 | Construction method for the antidetonation iterative structure that existing structure is reinforced across bearing beam greatly |
| CN106907019A (en) * | 2017-04-28 | 2017-06-30 | 福州大学 | A kind of joint reinforcing device and its construction method for cross beam |
| CN109252691A (en) * | 2018-10-19 | 2019-01-22 | 沈阳建筑大学 | A kind of reinforced steel concrete framed floor structure and reinforcement means |
| CN110878641A (en) * | 2019-12-10 | 2020-03-13 | 赵枫 | Reinforcing structure adopting superimposed hollow floor slab grid system and new construction method |
| CN110878641B (en) * | 2019-12-10 | 2023-11-07 | 四川大学锦江学院 | Reinforcing structure adopting superimposed hollow floor slab grid system and new construction method |
| CN111140031A (en) * | 2020-01-20 | 2020-05-12 | 浙江汉林建筑设计有限公司 | Shear reinforcement structure that shears in concrete shear force wall even roof beam and wall beam connected node region |
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Application publication date: 20160406 |