CN109779146A - A kind of assembled steel reinforced concrete beam string structure - Google Patents
A kind of assembled steel reinforced concrete beam string structure Download PDFInfo
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- CN109779146A CN109779146A CN201910196232.1A CN201910196232A CN109779146A CN 109779146 A CN109779146 A CN 109779146A CN 201910196232 A CN201910196232 A CN 201910196232A CN 109779146 A CN109779146 A CN 109779146A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 85
- 239000010959 steel Substances 0.000 title claims abstract description 85
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 28
- 239000004567 concrete Substances 0.000 claims abstract description 66
- 239000011178 precast concrete Substances 0.000 claims abstract description 48
- 210000003205 muscle Anatomy 0.000 claims description 15
- 239000002689 soil Substances 0.000 claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 17
- 238000005452 bending Methods 0.000 description 11
- 238000004458 analytical method Methods 0.000 description 9
- 238000003466 welding Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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Abstract
The invention discloses a kind of assembled steel reinforced concrete beam string structures, including armored concrete roof beam structure (1), several struts (2) are distributed in armored concrete roof beam structure (1) bottom, several strut (2) lower ends are connected with drag-line (3), and drag-line (3) both ends are fixedly connected with armored concrete roof beam structure (1) both ends respectively；The armored concrete roof beam structure (1) includes sequentially connected multiple precast concrete brackets (4), the junction of contiguous prefabricated concrete support (4) is equipped with weld part (401) and auxiliary section (402), precast concrete bracket (4) bottom of auxiliary section (402) setting in strut (2) side.The present invention, which has, facilitates construction, structural stability height and the good feature of durability.
Description
Technical field
The present invention relates to a kind of armored concrete tension string beam structure, especially a kind of assembled steel reinforced concrete beam string
Structure.
Background technique
Tension string beam structure is a kind of to be winded up by rigid member, flexible cable, intermediate connect the mixed structure body formed with strut
System has good since its structure is simple, stress is clear, structure type is various, has given full play to the advantage of hard and soft two kinds of materials
Application prospect.Current tension string beam structure mainly based on steel construction, but this kind of beam string by opposite force bearing capacity compared with
Difference causes it to there is a problem of that wind loading rating is poor, steel construction stability difference.And have that stability is preferable, wind loading rating is strong, the later period
The tension string beam structure based on cast-in-situ steel reinforced concrete for the features such as maintenance cost is low, then can be costly because of large space formwork,
The defect of long construction period and less be applied in Practical Project.
Since in armored concrete tension string beam structure, the moment of flexure that long-span concrete beam is subject to is larger, therefore when beam is segmented
The difficulty of construction of beam bottom rebar junction can be greatly increased afterwards, and the quality of connection at its construction not can guarantee yet；Lead to mesh
Preceding concrete beam string structure is still winded up using whole cast-in-place concrete roof beam structure as rigid member, in civil building engineering
There is no across reinforced beam to carrying out being segmented prefabricated precedent greatly.And the long-span concrete beam of integral cast-in-situ formula it will cause
The problem of expenditure of construction of its concrete beam string entirety is high, long construction period；And its beams of concrete also can be because being subjected to
Moment of flexure it is larger and there is a problem of that structural stability is low, durability is poor.Therefore, existing armored concrete beam string can not be same
When have the characteristics that low expenditure of construction, short construction period, structural stability and durability are good.
Summary of the invention
The object of the present invention is to provide a kind of assembled steel reinforced concrete beam string structures.It can have simultaneously builds
Make the good feature of low expense, short construction period, structural stability and durability.
Technical solution of the present invention: a kind of assembled steel reinforced concrete beam string structure, including armored concrete roof beam structure, steel
Reinforced concrete roof beam structure bottom is distributed with several struts, and several strut lower ends are connected with drag-line, drag-line both ends respectively with reinforced concrete
Native roof beam structure both ends are fixedly connected；The armored concrete roof beam structure includes sequentially connected multiple precast concrete brackets, adjacent pre-
The junction of concrete support processed is equipped with weld part and auxiliary section, and the precast concrete branch of strut side is arranged in the auxiliary section
Frame bottom.
In a kind of assembled steel reinforced concrete beam string structure above-mentioned, precast concrete bracket both ends are respectively connected with
Steel hoop, the end of steel hoop extend to precast concrete stent outer, through steel hoop phase between contiguous prefabricated concrete support
It connects.
In a kind of assembled steel reinforced concrete beam string structure above-mentioned, the strut includes the body of rod being hinged and hinge
Joint chair, body of rod lower end are connected with drag-line, and hinged seat upper end is connected with the bottom of steel hoop.
In a kind of assembled steel reinforced concrete beam string structure above-mentioned, the shape of the steel hoop is rectangle, the weldering
Top and the two sides side wall of steel hoop junction is arranged in socket part, and the bottom of adjacent steel hoop is arranged in the auxiliary section, cooperation
It is bonded to each other between adjacent steel hoop at portion.
In a kind of assembled steel reinforced concrete beam string structure above-mentioned, the top and bottom of the precast concrete bracket
Be equipped with vertical muscle, waist muscle be equipped in precast concrete bracket, indulge the both ends of muscle and waist muscle respectively with precast concrete bracket both ends
Steel hoop be connected with each other.
In a kind of assembled steel reinforced concrete beam string structure above-mentioned, filled with mixed on the inside of the junction of adjacent steel hoop
The junction outside of solidifying soil, adjacent steel hoop is equipped with slightly expanded concrete.
In a kind of assembled steel reinforced concrete beam string structure above-mentioned, wherein one end of the precast concrete bracket is set
There is injected hole, one end of injected hole is located at the side wall of precast concrete bracket, and the other end of injected hole extends at steel hoop.
Concrete two in a kind of assembled steel reinforced concrete beam string structure above-mentioned, in the precast concrete bracket
End is equipped with groove, and the concrete in the steel hoop fills groove in filling complete.
In a kind of assembled steel reinforced concrete beam string structure above-mentioned, several pegs, bolt are equipped on the inside of the steel hoop
Nail end is located in precast concrete bracket.
Compared with prior art, multiple precast concrete brackets are sequentially connected shape by the present invention by way of being welded to each other
At armored concrete roof beam structure, it can effectively solve the problems, such as that traditional cast-in-place concrete beam string formwork is costly, long construction period；
Precast concrete bracket is connected through the structure cooperation of place's weld part and auxiliary section when successively welding, can be by reinforced concrete
The moment of flexure that native roof beam structure is subjected to is converted into the axis pressure that strut is subjected to and the pulling force that drag-line is subjected to, to make reinforcing bar
What concrete roof beam structure can continue during the work time is in pressured state, has been released effectively armored concrete roof beam structure as upper
Suffered most of moment of flexure when string beam greatly reduces the technique requirement of precast concrete bracket junction, reduces it and apply
Work difficulty；And since strut and drag-line can have good stress intensity and carrying in the construction package as beam string
Power improves so that the axis pressure of strut and the pulling force of drag-line be made still to be able to maintain its whole structural stability after the lifting
Whole structural bearing capacity and durability of the invention.
In addition, the present invention passes through the cooperation of precast concrete bracket and steel hoop, it is right at the scene to can be convenient construction personnel
The welding of precast concrete bracket, and improve its welding effect；Cooperated by the structure of injected hole and steel hoop, can make to mix
Solidifying soil can be filled directly into the junction of contiguous prefabricated concrete support after steel hoop welding, to make the prefabricated of each segmentation
Concrete support can be integrally formed after pouring, and it is mixed to cooperate filling to the slightly expanded concrete on the outside of steel hoop to improve reinforcing bar
The structural strength and shear resistance of solidifying soil roof beam structure entirety, it is steady to further increase structure of the invention while facilitating worker to construct
Qualitative, the concrete at steel hoop will can also effectively improve the bite force of its junction after groove filling completely, further protect
Demonstrate,prove the bonding strength between precast concrete bracket；By the interconnection of precast concrete bracket, waist muscle and steel hoop, may be used also
The connection between structural strength and steel hoop, precast concrete bracket to further increase precast concrete bracket itself is strong
Degree makes armored concrete roof beam structure not further improve the present invention because of itself deformation or disengagement caused by pressure at work
Structural stability；By the position and connection structure of the body of rod and hinged seat, can be improved strut and armored concrete roof beam structure it
Between bonding strength, to guarantee that strut can have good connective stability and durable after suffered axis pressure improves
Property.So the present invention can have the characteristics that low expenditure of construction, short construction period, structural stability and durability are good simultaneously.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the A of Fig. 1 to enlarged drawing；
Fig. 3 is the B direction view of Fig. 2；
Fig. 4 is the outline drawing of beam string test model；
Fig. 5 is the C of Fig. 4 to schematic diagram；
Fig. 6 is the Structure Calculation figure of beam string in force analysis；
Fig. 7 is the axial force diagram of beam string in force analysis；
Fig. 8 is the bending moment diagram of beam string in force analysis；
Fig. 9 is the shear diagram of beam string in force analysis；
Figure 10 is the deformation pattern of beam string in force analysis.
The label in accompanying drawing is: 1- armored concrete roof beam structure, 2- strut, 3- drag-line, 4- precast concrete bracket, 6- steel bushing
Hoop, 7- waist muscle, 8- injected hole, 9- roof boarding, 10- wind up beam, 11- upright bar, 12- tie rod, and 13- indulge muscle, the 201- body of rod, and 202- is cut with scissors
Joint chair, 401- weld part, the auxiliary section 402-, 403- groove.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples, but be not intended as to the present invention limit according to
According to.
Embodiment.A kind of assembled steel reinforced concrete beam string structure, constitute as shown in Figure 1-3, include armored concrete
Several struts 2 are distributed in roof beam structure 1,1 bottom of armored concrete roof beam structure, and several 2 lower ends of strut are connected with drag-line 3,3 both ends of drag-line point
It is not fixedly connected with 1 both ends of armored concrete roof beam structure；The armored concrete roof beam structure 1 includes sequentially connected multiple concretes
Native bracket 4, the junction of contiguous prefabricated concrete support 4 are equipped with weld part 401 and auxiliary section 402, and the auxiliary section 402 is arranged
In 4 bottom of precast concrete bracket of 2 side of strut.
4 both ends of precast concrete bracket are respectively connected with steel hoop 6, set between steel hoop 6 and precast concrete bracket 4
There is the concave-convex opening mutually fastened, the end of steel hoop 6 extends to 4 outside of precast concrete bracket, contiguous prefabricated concrete support 4
Between be connected with each other through steel hoop 6.
The strut 2 includes the body of rod 201 and hinged seat 202 being hinged, and 201 lower end of the body of rod is connected with drag-line 3, hingedly
202 upper ends of seat and the bottom of steel hoop 6 are welded to each other.
The shape of the steel hoop 6 is rectangle, and the top and two sides of 6 junction of steel hoop is arranged in the weld part 401
Side wall, the auxiliary section 402 are arranged in the bottom of adjacent steel hoop 6, mutually paste between the adjacent steel hoop 6 at auxiliary section 402
It closes (not welding).
The top and bottom of the precast concrete bracket 4 are equipped with vertical muscle 13, are equipped with waist muscle in precast concrete bracket 4
7, the both ends for indulging muscle 13 and waist muscle 7 are connected with each other with the steel hoop 6 at 4 both ends of precast concrete bracket respectively.
It is filled with concrete on the inside of the junction of adjacent steel hoop 6, is equipped with microdilatancy on the outside of the junction of adjacent steel hoop 6
The outerplanar of concrete, slightly expanded concrete is flushed with the outerplanar of precast concrete bracket 4.
Wherein one end of the precast concrete bracket 4 is equipped with injected hole 8, and one end of injected hole 8 is located at precast concrete
The side wall of bracket 4, the other end of injected hole 8 extend at steel hoop 6.
Concrete both ends in the precast concrete bracket 4 are equipped with groove 403, and the depth of groove 403 is 30mm, described
Concrete in steel hoop 6 fills groove 403 completely in filling, passes through the precast concrete in precast concrete bracket 4
The cooperation of structure and groove 403,4 junction of precast concrete bracket can be further improved by making subsequent concrete after filling
Shearing resistance, avoid the problem that precast concrete bracket 4 disengages after compression.
Several pegs are equipped on the inside of the steel hoop 6, peg end is located in precast concrete bracket 4.
The working principle of the invention: the present invention, first by each 4 machine-shaping of precast concrete bracket, then exists when building
Successively welding forms armored concrete roof beam structure 1 at scene.Contiguous prefabricated concrete support 4 is in welding by by the steel hoop of end
After 6 are bonded to each other, steel hoop 6 is protruded to top and the two sides all welderings thoroughly of part, and weld is not done in the bottom of steel hoop 6
Reason；Since the bottom of armored concrete roof beam structure 1 is discontinuous, so as to so that reinforced beam frame 1 does not have downward bending resistance
Ability, the whole offer for causing the bending resistance of beam string entirety to be formed by armored concrete roof beam structure 1, strut 2 and drag-line 3, is released
The moment of flexure being subjected at each 4 node of precast concrete bracket is put, the technique for reducing each node requires and improves this hair
Bright whole stability.Armored concrete roof beam structure 1 passes through injected hole 8 for Concrete Filled to the company of each steel hoop 6 upon connection
Place is met, and fills slightly expanded concrete on the outside of steel hoop 6, precast concrete bracket 4 is integrally formed can upon connection, mentions
High 1 structural stability of armored concrete roof beam structure and wind loading rating.Armored concrete roof beam structure 1 build after by the hinged seat of each strut 2
202 are welded on steel hoop 6, to improve the connective stability of strut 2 and armored concrete roof beam structure 1, and due to the axis of strut 2
Pressure is able to maintain good connective stability after increase.Finally by drag-line 3 respectively with strut 2, armored concrete roof beam structure 1 into
Row connection, is completed to construction of the invention.
Experimental example 1: as shown in Figure 4 and Figure 5, this experimental example establishes test model according to tension string beam structure, the test mould
Type is made of roof boarding 9, the beam 10 that winds up, upright bar 11 and tie rod 12；Wherein upright bar 11 passes through the beam 10 that winds up in connection, causes
The bottom of string beam 10 is discrete state.Cast material is aluminium pop can, overall size 850mm*850mm, gross weight 290
Gram (wherein roof boarding 9 be 200 grams, remaining component be 90 grams).The final loading capacity of the test model is 36000 grams, and explanation is released
Tension string beam structure system is still set up after putting the moment of flexure of string beam, has good structural bearing capacity.
Experimental example 2: this experimental example carries out force analysis to beam string using 3D3S software, and wherein beam span is 30 meters,
3.5 meters of string deck-molding, a support is set at 5 meters, 5 meters of interval sets a concentration stress point, and each stress point 200KN is not examined
Consider dead load.
Experimental result as illustrated in figures 6-10, by force analysis it is found that the span centre bending resistance of beam string is by M1, M2 two
It is grouped as, wherein M1 is by the beam section bending resistance contribution 527KN.m that winds up；M2 is integrally formed by the beam that winds up, support rod and last quarter rope, is resisted
Curved ability is 1134KN*3.5m=3969KN.m.Total bending resistance M is 4496KN.m.
With the common simply supported beam span centre maximal bending moment of spline span and stress are as follows: 500KN*15m-200KN*10m-200KN*5m
=4500KN.m.It fits like a glove with the force analysis of the experiment.The bending resistance of description of test beam string is mainly by the beam that winds up, branch
M2 provided by the entirety that strut and last quarter rope are formed, accounts for about the 90% of whole bending resistance；And the beam that winds up be primarily subjected to it is curved
Square consists of two parts, and a part is the moment M 1 that beam string is generated by whole deformation, another part floow load between strut
The local bending moment Ma of generation.Wherein Ma depends on strut spacing La, typically small (relative to M1).M1 depends on the whole of beam string
Body deforms the rigidity (sectional dimension) of (amount of deflection) and the beam that winds up, general relatively large.And by the analysis of cases of experimental example 1 it is found that
After the bending resistance release for the beam that winds up, the axis pressure of the pulling force of drag-line and the beam that winds up is 4500KN.m/3.5m=1286KN, than
Axle power 1134KN before processing increases about 13%.Experimental result is it is found that the present invention passes through the bottom disconnection for the beam that will wind up, Ke Yi
Guarantee the axis pressure that moment of flexure suffered by the beam that winds up is released to the pulling force of drag-line and the beam that winds up while tension string beam structure effect,
To reduce the technology difficulty for the beam that winds up and guarantee the structural stability of concrete beam string entirety.
Claims (9)
1. a kind of assembled steel reinforced concrete beam string structure, it is characterised in that: including armored concrete roof beam structure (1), reinforcing bar is mixed
Solidifying soil roof beam structure (1) bottom is distributed with several struts (2), and several strut (2) lower ends are connected with drag-line (3), drag-line (3) both ends difference
It is fixedly connected with armored concrete roof beam structure (1) both ends；The armored concrete roof beam structure (1) includes sequentially connected multiple prefabricated mixed
The junction of solidifying soil bracket (4), contiguous prefabricated concrete support (4) is equipped with weld part (401) and auxiliary section (402), described to match
Conjunction portion (402) is arranged in precast concrete bracket (4) bottom of strut (2) side.
2. a kind of assembled steel reinforced concrete beam string structure according to claim 1, it is characterised in that: described prefabricated mixed
Solidifying soil bracket (4) both ends are respectively connected with steel hoop (6), and the end of steel hoop (6) extends on the outside of precast concrete bracket (4),
It is connected with each other between contiguous prefabricated concrete support (4) through steel hoop (6).
3. a kind of assembled steel reinforced concrete beam string structure according to claim 2, it is characterised in that: the strut
It (2) include the body of rod (201) and hinged seat (202) being hinged, the body of rod (201) lower end is connected with drag-line (3), hinged seat
(202) upper end is connected with the bottom of steel hoop (6).
4. a kind of assembled steel reinforced concrete beam string structure according to claim 2, it is characterised in that: the steel hoop
(6) shape is rectangle, and top and two sides side wall in steel hoop (6) junction, the cooperation is arranged in the weld part (401)
It is bonded to each other between the adjacent steel hoop (6) that portion (402) is arranged at the bottom of adjacent steel hoop (6), auxiliary section (402).
5. a kind of assembled steel reinforced concrete beam string structure according to claim 2, it is characterised in that: described prefabricated mixed
It is equipped with vertical muscle (13) at the top and bottom of solidifying soil bracket (4), is equipped with waist muscle (7) in precast concrete bracket (4), indulged muscle (13)
It is connected with each other respectively with the steel hoop (6) at precast concrete bracket (4) both ends with the both ends of waist muscle (7).
6. a kind of assembled steel reinforced concrete beam string structure according to claim 2, it is characterised in that: adjacent steel hoop
(6) it is filled with concrete on the inside of junction, is equipped with slightly expanded concrete on the outside of the junction of adjacent steel hoop (6).
7. a kind of assembled steel reinforced concrete beam string structure according to claim 6, it is characterised in that: described prefabricated mixed
Wherein one end of solidifying soil bracket (4) is equipped with injected hole (8), and one end of injected hole (8) is located at the side of precast concrete bracket (4)
Wall, the other end of injected hole (8) extend at steel hoop (6).
8. a kind of assembled steel reinforced concrete beam string structure according to claim 6, it is characterised in that: described prefabricated mixed
Concrete both ends in solidifying soil bracket (4) are equipped with groove (403), and the concrete in the steel hoop (6) is in filling by groove
(403) filling is complete.
9. a kind of assembled steel reinforced concrete beam string structure according to claim 2, it is characterised in that: the steel hoop
(6) inside is equipped with several pegs, and peg end is located in precast concrete bracket (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910196232.1A CN109779146B (en) | 2019-03-15 | 2019-03-15 | Assembled reinforced concrete beam string structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910196232.1A CN109779146B (en) | 2019-03-15 | 2019-03-15 | Assembled reinforced concrete beam string structure |
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| CN109779146A true CN109779146A (en) | 2019-05-21 |
| CN109779146B CN109779146B (en) | 2024-01-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302162A (en) * | 2020-10-30 | 2021-02-02 | 邢台职业技术学院 | Fabricated chord-supported concrete transfer floor structure and construction method thereof |
| CN112982787A (en) * | 2021-02-08 | 2021-06-18 | 清华大学建筑设计研究院有限公司 | Large-span beam with reinforced concrete and prestressed inhaul cable coupled |
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| CN201738496U (en) * | 2010-06-21 | 2011-02-09 | 浙江鸿翔建设集团有限公司 | Concrete beam string structure |
| CN103541495A (en) * | 2013-09-22 | 2014-01-29 | 沈阳建筑大学 | Connecting box assembled type concrete beam |
| CN106930405A (en) * | 2017-04-28 | 2017-07-07 | 常州工学院 | A kind of beam connecting structure of assembly concrete framework |
| CN107401220A (en) * | 2017-09-25 | 2017-11-28 | 季芙瑶 | A kind of beam connecting node of assembly concrete framework |
| CN209760590U (en) * | 2019-03-15 | 2019-12-10 | 杭州中联筑境建筑设计有限公司 | Assembled reinforced concrete beam string structure |
-
2019
- 2019-03-15 CN CN201910196232.1A patent/CN109779146B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201738496U (en) * | 2010-06-21 | 2011-02-09 | 浙江鸿翔建设集团有限公司 | Concrete beam string structure |
| CN103541495A (en) * | 2013-09-22 | 2014-01-29 | 沈阳建筑大学 | Connecting box assembled type concrete beam |
| CN106930405A (en) * | 2017-04-28 | 2017-07-07 | 常州工学院 | A kind of beam connecting structure of assembly concrete framework |
| CN107401220A (en) * | 2017-09-25 | 2017-11-28 | 季芙瑶 | A kind of beam connecting node of assembly concrete framework |
| CN209760590U (en) * | 2019-03-15 | 2019-12-10 | 杭州中联筑境建筑设计有限公司 | Assembled reinforced concrete beam string structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302162A (en) * | 2020-10-30 | 2021-02-02 | 邢台职业技术学院 | Fabricated chord-supported concrete transfer floor structure and construction method thereof |
| CN112302162B (en) * | 2020-10-30 | 2022-08-16 | 邢台职业技术学院 | Fabricated chord-supported concrete transfer floor structure and construction method thereof |
| CN112982787A (en) * | 2021-02-08 | 2021-06-18 | 清华大学建筑设计研究院有限公司 | Large-span beam with reinforced concrete and prestressed inhaul cable coupled |
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