CN109138267A - The big beam end fixed structure of squat silo roof slab truss load-bearing and construction method - Google Patents
The big beam end fixed structure of squat silo roof slab truss load-bearing and construction method Download PDFInfo
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- CN109138267A CN109138267A CN201811062045.6A CN201811062045A CN109138267A CN 109138267 A CN109138267 A CN 109138267A CN 201811062045 A CN201811062045 A CN 201811062045A CN 109138267 A CN109138267 A CN 109138267A
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- bearing
- load
- silo roof
- fixed structure
- steel
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
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- Engineering & Computer Science (AREA)
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The present invention provides a kind of big beam end fixed structure of squat silo roof slab truss load-bearing and construction methods, wherein, the big beam end fixed structure of squat silo roof slab truss load-bearing, it include: the load-bearing crossbeam being obliquely installed, its end is erected on sliding formwork door frame lower annular channel steel and/or bulkhead welds on steel corbel, one U-shaped reinforcing bar, two free ends are embedded in silo roof ring beam and/or in bulkhead, and U-bend folding part catches the end of the load-bearing crossbeam.The big beam end fixed structure of squat silo roof slab truss load-bearing provided by the invention and construction method, the big beam end stationary nodes of the load-bearing of top plate steel truss are easier to construct, eliminate safety defect caused by construction deviation, big change is not made to the big beam end fixed form of existing load-bearing, top plate concrete construction loads is born for top plate steel truss and provides safety guarantee, improves the security performance of existing steel truss fixed form.
Description
Technical field
The present invention relates to technical field of building construction, a kind of especially big beam end of squat silo roof slab truss load-bearing is fixed
Structure and construction method.
Background technique
Silo top plate concrete form support system except it is traditional set up full hall steel pipe frame Construction of Supporting mode in addition to, greatly at present
Amount uses Large-diameter Steel truss high-altitude integral formwork support system, and steel truss undertakes the whole load of large span top plate concrete construction, with biography
System is set up full hall steel pipe frame Construction of Supporting mode and is compared, and steel truss formwork system saves lot of materials and artificial, in silo, cylinder
There are more advantages in the construction such as storehouse, there is extensive market value.
Due to 21 ~ 30m of steel truss diameter itself, top top plate concrete and construction loads are undertaken up to 300 ~ 1000t, and steel truss is big
The fixed form of beam and silo roof concrete is particularly important, is directly related to the safety of top board construction；There is crossbeam freely-supported in sliding formwork door at present
Frame lower annular channel steel, crossbeam freely-supported weld two kinds of fixed forms of steel corbel in bulkhead；
Since sliding formwork door frame in first way and annular channel steel section rigidity are smaller, it is larger to deform, it is difficult to top plate load is born,
Second way steel truss fabrication and installation deviation, big beam end usually occur that length is inadequate, center is inclined with steel corbel lay-down position
The problems such as position, influences steel truss stress safety.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of big beam end fixed structures of squat silo roof slab truss load-bearing
And construction method, improve the security performance of existing steel truss fixed form.
The present invention provides a kind of big beam end fixed structures of squat silo roof slab truss load-bearing, comprising: is obliquely installed
Load-bearing crossbeam, end is erected on sliding formwork door frame lower annular channel steel and/or bulkhead welds on steel corbel, a U-shaped reinforcing bar,
Two free ends are embedded in silo roof ring beam and/or in bulkhead, and U-bend folding part catches the end of the load-bearing crossbeam.
Further, wedge block is fixedly connected with below the load-bearing crossbeam, the wedge block bottom surface is horizontal, and its
Bottom surface is erected on the annular channel steel upper surface.
Further, two fixed blocks, two fixed blocks are further fixed on the side wall of the end of the load-bearing crossbeam
Between form installation space, the U-shaped bending part is arranged in the installation space.
Further, two free end is fixedly welded on the framework of steel reinforcement in silo roof ring beam and/or the reinforcing bar of bulkhead
On skeleton.
Further, the diameter of the U-shaped reinforcing bar is 15 ~ 25mm.
Further, the diameter of the U-shaped reinforcing bar is 20mm.
The present invention also provides the construction methods of the above-mentioned big beam end fixed structure of squat silo roof slab truss load-bearing, including
Following steps:
A: the U-shaped reinforcing bar is embedded in silo roof ring beam and/or in bulkhead；
B: installation top plate steel truss, so that the load-bearing girder inclination is arranged, end is erected on sliding formwork door frame lower annular recess
On steel and/or on bulkhead welding steel corbel, and the U-bend folding part is made to catch the end of the load-bearing crossbeam；
C: the concrete strength to the embedded place of the U-shaped reinforcing bar reaches 70% or more of its preset strength, pours top plate concrete.
The big beam end fixed structure of squat silo roof slab truss load-bearing provided by the invention and construction method, top plate steel truss
The big beam end stationary nodes of load-bearing be easier to construct, eliminate construction deviation caused by safety defect, to existing load-bearing crossbeam
End fixed form does not make big change, bears top plate concrete construction loads for top plate steel truss and provides safety guarantee, improves
The security performance of existing steel truss fixed form.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention one；
Fig. 2 is the structural schematic diagram of the embodiment of the present invention two.
In figure, 1. sliding formwork door frames, 101. annular channel steels, 2. load-bearing crossbeams, 201. wedge blocks, 3. U-shaped reinforcing bars, 4. storehouses
Wall, 5. silo roof ring beams, 6. bulkheads weld steel corbel.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples, so that those skilled in the art can be with
It more fully understands the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
Embodiment one:
As shown in Figure 1, a kind of big beam end fixed structure of squat silo roof slab truss load-bearing, comprising: the load-bearing being obliquely installed is big
Beam 2, end are erected on 1 lower annular channel steel 101 of sliding formwork door frame, and a U-shaped reinforcing bar 3, two free ends are embedded in bulkhead 4
In, U-bend folding part catches the end of the load-bearing crossbeam 2.
Sliding formwork entirety traction steel truss is to silo roof, and since annular 101 size of channel steel is smaller, strength and stiffness are not able to satisfy top
The huge construction loads requirement of plate, after increasing U-shaped reinforcing bar 3, steel truss safety is greatly improved.
In one optional embodiment of the present embodiment, to guarantee that load-bearing crossbeam 2 is smoothly erected on annular channel steel 101,
Wedge block 201 is fixedly connected with below load-bearing crossbeam 2,201 bottom surface of wedge block is horizontal, and its bottom surface is erected on annular channel steel
101 upper surfaces.In addition, U-shaped reinforcing bar 3 can be effectively prevent to fall off since wedge block 201 is in the end bosses of load-bearing crossbeam 2.
In one optional embodiment of the present embodiment, for the position for further limiting U-shaped reinforcing bar 3, the load-bearing is big
It is further fixed on two fixed block (not shown) on the side wall of the end of beam 2, forms installation space between two fixed blocks, institute
U-shaped bending part is stated to be arranged in the installation space.
In one optional embodiment of the present embodiment, to make 3 fixation of U-shaped reinforcing bar, the 3 liang of free end welding of U-shaped reinforcing bar
It is fixed on the framework of steel reinforcement of bulkhead 4.
In one optional embodiment of the present embodiment, the diameter of the U-shaped reinforcing bar 3 is 15 ~ 25mm, it is preferable that U-shaped reinforcing bar
3 diameter is 20mm.
The present invention also provides the construction methods of the above-mentioned big beam end fixed structure of squat silo roof slab truss load-bearing, including
Following steps:
A: the U-shaped reinforcing bar 3 is embedded in bulkhead 4；
B: installation top plate steel truss, so that the load-bearing crossbeam 2 is obliquely installed, end is erected on 1 lower annular of sliding formwork door frame
On channel steel 101, and the U-bend folding part is made to catch the end of the load-bearing crossbeam 2；
C: the concrete strength to the embedded place of the U-shaped reinforcing bar 3 reaches 70% or more of its preset strength, pours top plate concrete.
Embodiment two:
As shown in Fig. 2, a kind of big beam end fixed structure of squat silo roof slab truss load-bearing, comprising: the load-bearing being obliquely installed is big
Beam 2, end are erected on bulkhead welding steel corbel 6, and a U-shaped reinforcing bar 3, two free ends are embedded in silo roof ring beam 5, U
Shape bending part catches the end of the load-bearing crossbeam 2.
Can have that installation center deviation is larger, shelving length between usual 2 end of load-bearing crossbeam and bulkhead welding steel corbel 6
The problems such as insufficient, 3 reinforcement means of U-shaped reinforcing bar is taken, steel truss support safety greatly improves.
In one optional embodiment of the present embodiment, steel corbel 6 is welded to guarantee that load-bearing crossbeam 2 is smoothly erected on bulkhead
On, wedge block 201 is fixedly connected with below load-bearing crossbeam 2,201 bottom surface of wedge block is horizontal, and its bottom surface is erected on bulkhead
Weld 6 upper surface of steel corbel.In addition, U-shaped reinforcing bar 3 can be effectively prevent since wedge block 201 is in the end bosses of load-bearing crossbeam 2
It falls off.
In one optional embodiment of the present embodiment, for the position for further limiting U-shaped reinforcing bar 3, the load-bearing is big
It is further fixed on two fixed block (not shown) on the side wall of the end of beam 2, forms installation space between two fixed blocks, institute
U-shaped bending part is stated to be arranged in the installation space.
In one optional embodiment of the present embodiment, to make 3 fixation of U-shaped reinforcing bar, the 3 liang of free end welding of U-shaped reinforcing bar
It is fixed on the framework of steel reinforcement of silo roof ring beam 5.
In one optional embodiment of the present embodiment, the diameter of the U-shaped reinforcing bar 3 is 15 ~ 25mm, it is preferable that U-shaped reinforcing bar
3 diameter is 20mm.
The present invention also provides the construction methods of the above-mentioned big beam end fixed structure of squat silo roof slab truss load-bearing, including
Following steps:
A: the U-shaped reinforcing bar 3 is embedded in silo roof ring beam 5；
B: installation top plate steel truss, so that the load-bearing crossbeam 2 is obliquely installed, end is erected on bulkhead welding steel corbel 6,
And the U-bend folding part is made to catch the end of the load-bearing crossbeam 2；
C: the concrete strength to the embedded place of the U-shaped reinforcing bar 3 reaches 70% or more of its preset strength, pours top plate concrete.
Embodiment three:
The present embodiment in conjunction with the embodiments one and embodiment two.
Silo can circumferentially be distributed multiple load-bearing crossbeams 2, therefore, can be by the fixed knot in embodiment one and embodiment two
Structure is used for same construction site, selects specific embodiment according to construction site situation.That is, load-bearing crossbeam 2, end both can be with
It is erected on annular channel steel 101, can also be erected on bulkhead welding steel corbel 6, alternatively, both some load-bearing crossbeams 2
End is erected on annular channel steel 101, and the end of some load-bearing crossbeam 2 is erected on bulkhead welding steel corbel 6；U-shaped steel
Muscle 3, two free ends can both be embedded in silo roof ring beam 5, can also be embedded in bulkhead 4, alternatively, both some U-shaped steel
Two free ends of muscle 3 are embedded in silo roof ring beam 5, and two free ends of some U-shaped reinforcing bar 3 are embedded in bulkhead 4.
The scope of protection of the present invention is not limited to this.Those skilled in the art are made equivalent on the basis of the present invention
Substitution or transformation, it is within the scope of the present invention.Protection scope of the present invention is subject to claims.
Claims (7)
1. a kind of big beam end fixed structure of squat silo roof slab truss load-bearing characterized by comprising the load-bearing being obliquely installed
Crossbeam, end is erected on the annular channel steel of the lower part of sliding formwork door frame and/or bulkhead welds on steel corbel, a U-shaped reinforcing bar,
Two free ends are embedded in silo roof ring beam and/or in bulkhead, and U-bend folding part catches the end of the load-bearing crossbeam.
2. the big beam end fixed structure of squat silo roof slab truss load-bearing as described in claim 1, which is characterized in that described
Wedge block is fixedly connected with below load-bearing crossbeam, the wedge block bottom surface is horizontal, and its bottom surface is erected on the annular channel steel
Upper surface.
3. the big beam end fixed structure of squat silo roof slab truss load-bearing as described in claim 1, which is characterized in that described to hold
It is further fixed on two fixed blocks on the side wall of the end of great beam, forms installation space, the U-shaped between two fixed blocks
Bending part is arranged in the installation space.
4. the big beam end fixed structure of squat silo roof slab truss load-bearing as described in claim 1, which is characterized in that described two
Free end is fixedly welded on the framework of steel reinforcement in silo roof ring beam and/or on the framework of steel reinforcement of bulkhead.
5. the big beam end fixed structure of squat silo roof slab truss load-bearing as described in claim 1, which is characterized in that the U
The diameter of shape reinforcing bar is 15 ~ 25mm.
6. the big beam end fixed structure of squat silo roof slab truss load-bearing as claimed in claim 5, which is characterized in that the U
The diameter of shape reinforcing bar is 20mm.
7. the construction method of any big beam end fixed structure of squat silo roof slab truss load-bearing of claim 1 ~ 6,
It is characterized in that, includes the following steps:
A: the U-shaped reinforcing bar is embedded in silo roof ring beam and/or in bulkhead；
B: installation top plate steel truss, so that the load-bearing girder inclination is arranged, end is erected on sliding formwork door frame lower annular recess
On steel and/or on bulkhead welding steel corbel, and the U-bend folding part is made to catch the end of the load-bearing crossbeam；
C: the concrete strength to the embedded place of the U-shaped reinforcing bar reaches 70% or more of its preset strength, pours top plate concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811062045.6A CN109138267B (en) | 2018-09-12 | 2018-09-12 | Fixing structure for end part of bearing girder of steel truss on top plate of squat silo and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811062045.6A CN109138267B (en) | 2018-09-12 | 2018-09-12 | Fixing structure for end part of bearing girder of steel truss on top plate of squat silo and construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109138267A true CN109138267A (en) | 2019-01-04 |
| CN109138267B CN109138267B (en) | 2020-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811062045.6A Active CN109138267B (en) | 2018-09-12 | 2018-09-12 | Fixing structure for end part of bearing girder of steel truss on top plate of squat silo and construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456422A (en) * | 2020-04-24 | 2020-07-28 | 五冶集团上海有限公司 | Belt supporting device and method for conical steel truss on top of sliding-form silo of squat silo wall |
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| CN103114754A (en) * | 2013-02-04 | 2013-05-22 | 陕西煤业化工建设（集团）有限公司 | Alternative hoisting method for conjoined coal bunker top truss girder pre-placing |
| CN104100122A (en) * | 2014-08-01 | 2014-10-15 | 中国化学工程第三建设有限公司 | Construction method of cone-shaped top structure of large silo |
| CN106337589A (en) * | 2016-10-31 | 2017-01-18 | 中国冶集团有限公司 | Adjustable lifting umbrella-shaped supporting steel structure for cone frustum hold ceiling and construction method thereof |
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2018
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103114754A (en) * | 2013-02-04 | 2013-05-22 | 陕西煤业化工建设（集团）有限公司 | Alternative hoisting method for conjoined coal bunker top truss girder pre-placing |
| CN104100122A (en) * | 2014-08-01 | 2014-10-15 | 中国化学工程第三建设有限公司 | Construction method of cone-shaped top structure of large silo |
| CN106337589A (en) * | 2016-10-31 | 2017-01-18 | 中国冶集团有限公司 | Adjustable lifting umbrella-shaped supporting steel structure for cone frustum hold ceiling and construction method thereof |
Non-Patent Citations (2)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456422A (en) * | 2020-04-24 | 2020-07-28 | 五冶集团上海有限公司 | Belt supporting device and method for conical steel truss on top of sliding-form silo of squat silo wall |
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| CN109138267B (en) | 2020-12-08 |
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