CN106087710A - A kind of king-post steel reinforced concrete transition structure - Google Patents
A kind of king-post steel reinforced concrete transition structure Download PDFInfo
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- CN106087710A CN106087710A CN201610642632.7A CN201610642632A CN106087710A CN 106087710 A CN106087710 A CN 106087710A CN 201610642632 A CN201610642632 A CN 201610642632A CN 106087710 A CN106087710 A CN 106087710A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
Abstract
A kind of king-post steel reinforced concrete transition structure, xoncrete structure is by lattice steel tower column, end bearing plate, WELDING STUDS, it is an entirety that vertical reinforcement and vertical prestressing bundle pour, lattice steel tower column comprises steel plate unencryption district the most successively, encrypted area of steel plate, steel plate secondary encrypted area and steel plate Tertiary infilling district, steel plate unencryption district comprises column steel construction main body and is connected to some tower body main structure steel plates of column steel construction body interior, some junction steel plates are set up in encrypted area of steel plate, steel plate secondary encrypted area sets up some junction steel plates further, steel plate Tertiary infilling district comprises end bearing plate.Switching performance of the present invention is good, load bang path is reliable, site operation is convenient, the huge tower body load of steel tower column part can be met and be passed down to the needs of xoncrete structure, load in changeover portion can according to design need progressively spread, it is provided simultaneously with multiple reliable connection measure, and steel reinforced concrete separating surface is without step, node area is without obvious structural stratification, and landscape effect is good.
Description
Technical field
The present invention relates to science of bridge building new technical field, particularly relate to a kind of king-post steel reinforced concrete transition structure.
Background technology
At present, the design studies majority to king-post steel reinforced concrete transition structure is the research for hybrid beam both at home and abroad, and relevant
The research of the scheme section of king-post steel reinforced concrete transition structure is less, various countries for the research of king-post steel reinforced concrete transition structure also in starting
Stage.
At present the design thinking of king-post steel reinforced concrete transition structure mainly has a following two:
1, pressure-bearing surface connects.In this programme, steel tower column part does local strengthening on pressure-bearing surface, makes tower body stress uniform
Being distributed on whole pressure-bearing surface, then use high-strength bolt to connect concrete region and steel construction region, both orders are on faying face
Fit tightly.This scheme is usually used in the connection between tower body steel tower segment and cushion cap, as it is shown in figure 1, the steel knot of Taizhou Yangtze Bridge
Between structure linkage section and concrete linkage section, with pressure-bearing surface as boundary, it is kept completely separate up and down, is connected by high-strength bolt between the two
Together.
2, PBL shear connector connects.This programme has circular hole on the wallboard and web of steel reinforced concrete changeover portion, through reinforcing bar with enter
The concrete entering this hole forms PBL shear connector together, concrete perfusion in transitional region, steel tower column by shear connector by load by
Step is delivered on concrete king-post.As in figure 2 it is shown, the steel reinforced concrete land power transmission of Nanjing San Qiao mainly passes through PBL key (on steel plate
Offer cavity, through reinforcing bar) conduct, a small amount of load is transmitted by pressure-bearing surface.
Above two scheme has successful application example, but there is also some defects.The connection that pressure-bearing is facial, is holding
Under pressure surface just relatively big to the concrete local stress of steel plate, concrete is difficult to pour into a mould and pouring compactness is difficult to detect, if shaken
Smash leakiness, the problem that local concrete compression is excessive easily occurs.The load of PBL shear connector connected mode transmits from top to bottom
During, upper strata pressure-bearing surface adjacent area assume responsibility for most load, and bang path is shorter, does not has effective whole transition
Duan Gongtong shares the transmission of load.
Summary of the invention
The present invention provides a kind of king-post steel reinforced concrete transition structure, and switching performance is good, load bang path is reliable, site operation
Convenient, the huge tower body load of steel tower column part can be met and be passed down to the needs of xoncrete structure, load is in changeover portion
Can according to design need progressively spread, be provided simultaneously with multiple reliable connection measure, and node region divide without obvious structure
Layer, landscape effect is good.
In order to achieve the above object, the present invention provides a kind of king-post steel reinforced concrete transition structure, comprises: lattice steel tower column, its
Upper end connects tower body steel tower segment, and lower end connects tower body concrete segment；
Described lattice steel tower column comprises steel plate unencryption district, encrypted area of steel plate, steel plate two the most successively
Secondary encrypted area and steel plate Tertiary infilling district, this lattice steel tower column forms rigidity lattice, by tower body stress spread to whole pressure-bearing
Face；
Described steel plate unencryption district comprises column steel construction main body and is connected to the some of column steel construction body interior
Tower body main structure steel plate；Encrypted area of described steel plate sets up some connection steel on the architecture basics in steel plate unencryption district
Plate, the two ends of this junction steel plate connect column steel construction main body and tower body main structure steel plate respectively；Described steel plate secondary encryption
District sets up some junction steel plates on the architecture basics of encrypted area of steel plate further, and the two ends of this junction steel plate connect respectively
Column steel construction main body and tower body main structure steel plate；Described steel plate Tertiary infilling district comprises end bearing plate, and its upper end connects post
The lower end of shape steel construction main body, lower end connects tower body concrete segment, described end bearing plate arranges some filling concrete holes；
Described king-post steel reinforced concrete transition structure also comprises:
Some WELDING STUDSs, its all column steel construction main bodys being arranged in each layer steel plate encrypted area, tower body main structure steel
On plate and junction steel plate, this WELDING STUDS progressively transmits upper strata steel construction stress to lower-layer concrete structure, and structural stress is by cutting
After the progressively unloading of power nail, remaining head tower load is delivered on concrete surface by end bearing plate；
Some vertical reinforcements, it is arranged in the filling concrete hole on end bearing plate, runs through whole steel plate encrypted area, be somebody's turn to do
Vertical reinforcement ensure that the concrete in steel reinforced concrete transitional region and the concrete under it form entirety；
Xoncrete structure, it is cast in whole steel plate encrypted area, is filled in column steel construction main body, tower body main structure steel
Between plate, junction steel plate, WELDING STUDS, vertical reinforcement and vertical prestressing bundle, and it is filled in the filling concrete hole of end bearing plate
In, it is one that lattice steel tower column, end bearing plate, WELDING STUDS, vertical reinforcement and vertical prestressing bundle are poured by xoncrete structure
Entirety, is arranged vertical reinforcement and the vertical prestressing bundle running through steel reinforced concrete transition structure, improves transition by filling concrete hole
The resistance to tension in region and the connection reliability with lower-layer concrete region.
Described king-post steel reinforced concrete transition structure also comprises some vertical prestressing bundles, and it is arranged on the coagulation on end bearing plate
In soil fill orifice, running through whole steel plate encrypted area, this vertical prestressing bundle provides permanently or temporarily tension for steel reinforced concrete transitional region
Ability.
The quantity of the described junction steel plate in steel plate secondary encrypted area is more than the junction steel plate in encrypted area of steel plate
Quantity.
Percent opening on described end bearing plate is 40%～60%, and optimize concrete under pressure-bearing surface pours condition,
Make part tower body load directly be transmitted by the upper and lower concrete of pressure-bearing surface, significantly reduce pressure-bearing steel plate to lower-layer concrete
Pressure.
Described column steel construction main body, tower body main structure steel plate and junction steel plate are connected by welding manner, described
Lattice steel tower column and end bearing plate are connected by welding manner, and described WELDING STUDS connects column steel construction by welding manner
Main body, tower body main structure steel plate and junction steel plate.
Described king-post steel reinforced concrete transition structure also comprises: skirtboard, and it is arranged on end bearing plate outer ring, wraps up lower-layer concrete
Top, improves concrete local anti-pressure ability, and monnolithic case linking transition is smooth and easy.
Switching performance of the present invention is good, load bang path is reliable, site operation is convenient, can meet steel tower column part huge
Tower body load be passed down to the needs of xoncrete structure, load in changeover portion can according to design need progressively expand
Dissipate, be provided simultaneously with multiple reliable connection measure, and steel-mixed separating surface is imitated without obvious structural stratification, view without step, node area
Fruit is good.
Accompanying drawing explanation
Fig. 1 is Taizhou Yangtze Bridge pressure-bearing surface attachment structure schematic diagram in background technology.
Fig. 2 is Nanjing San Qiao PBL shear connector attachment structure schematic diagram in background technology.
Fig. 3 is the facade view of a kind of king-post steel reinforced concrete transition structure that the present invention provides.
Fig. 4 is the sectional view in C1 face in Fig. 3.
Fig. 5 is the sectional view in C2 face in Fig. 3.
Fig. 6 is the sectional view in C3 face in Fig. 3.
Fig. 7 is the sectional view in C4 face in Fig. 3.
Detailed description of the invention
Below according to Fig. 3～Fig. 7, illustrate presently preferred embodiments of the present invention.
As it is shown on figure 3, the present invention provides a kind of king-post steel reinforced concrete transition structure, comprise:
Lattice steel tower column 1, its upper end connects tower body steel tower segment, and as shown in Figure 4, described lattice steel tower column 1 comprises
Column steel construction main body 101 and be connected to the some tower body main structure steel plates 102 inside column steel construction main body 101；
Described lattice steel tower column 1 comprises steel plate unencryption district, encrypted area of steel plate, steel plate two the most successively
Secondary encrypted area and steel plate Tertiary infilling district, form rigidity lattice, by tower body stress spread to whole pressure-bearing surface；Described steel plate one
Secondary encrypted area, steel plate secondary encrypted area and steel plate Tertiary infilling district form steel plate encrypted area, the size of steel plate encrypted area and encryption
Degree can adjust according to tower body internal force situation.As shown in Figure 4, described steel plate unencryption district keeps the former of lattice steel tower column 1
Having structure constant, this steel plate unencryption district comprises column steel construction main body 101 and is connected within column steel construction main body 101
Some tower body main structure steel plates 102；As it is shown in figure 5, the architecture basics that described encrypted area of steel plate is in steel plate unencryption district
On set up some junction steel plates 103, the two ends of this junction steel plate 103 connect column steel construction main body 101 and the main knot of tower body respectively
Structure steel plate 102；As shown in Figure 6, described steel plate secondary encrypted area increases on the architecture basics of encrypted area of steel plate further
If some junction steel plates 103, the two ends of this junction steel plate 103 connect column steel construction main body 101 and tower body main structure steel respectively
Plate 102, the quantity of the junction steel plate 103 in steel plate secondary encrypted area is more than the junction steel plate 103 in encrypted area of steel plate
Quantity；As it is shown in fig. 7, described steel plate Tertiary infilling district comprises end bearing plate 2, its upper end connects column steel construction main body 101
Lower end, lower end connects tower body concrete segment, described end bearing plate 2 arranges some filling concrete holes 201, holds bearing plate
Percent opening on 2 is 40%～60%, and on the one hand bigger percent opening ensures concrete casting performance, on the other hand ensure that
The vertical load of more than 50% is directly transmitted by concrete；In the present embodiment, connect lattice steel tower column 1 by welding procedure
Various piece.
Described king-post steel reinforced concrete transition structure also comprises:
Some WELDING STUDSs 3, it is arranged on all steel construction (columns in encrypted area of steel plate and steel plate secondary encrypted area
Steel construction main body 101, tower body main structure steel plate 102 and junction steel plate 103) on, this WELDING STUDS 3 progressively transmits upper strata steel construction should
Power is to lower-layer concrete structure, and after structural stress is progressively unloaded by WELDING STUDS, remaining head tower load is passed by end bearing plate 2
It is delivered on concrete surface；In this enforcement, by welding manner, WELDING STUDS 3 is welded on column steel construction main body 101, the main knot of tower body
On structure steel plate 102 and junction steel plate 103；
Some vertical reinforcements 4, it is arranged in the filling concrete hole 201 on end bearing plate 2, runs through whole steel plate once
Encrypted area, steel plate secondary encrypted area and steel plate Tertiary infilling district, this vertical reinforcement 4 ensure that the concrete in steel reinforced concrete transitional region
Entirety is formed with the concrete under it；
Some vertical prestressing bundles 5, it is arranged in the filling concrete hole 201 on end bearing plate 2, runs through whole steel plate
Encrypted area, this vertical prestressing bundle 5 provides permanently or temporarily resistance to tension, vertical prestressing Shu Weiben steel for steel reinforced concrete transitional region
Selectivity measure in mixed excessive structural, can arrange according to the actual requirements or cancel；
Xoncrete structure 7, it is cast in encrypted area of whole steel plate, steel plate secondary encrypted area and steel plate Tertiary infilling district
In, it is filled in column steel construction main body 101, tower body main structure steel plate 102, junction steel plate 103, WELDING STUDS 3, vertical reinforcement 4 and
Between vertical prestressing bundle 5, and being filled in the filling concrete hole 201 of end bearing plate 2, xoncrete structure 7 is by lattice steel
It is an entirety that king-post 1, end bearing plate 2, WELDING STUDS 3, vertical reinforcement 4 and vertical prestressing bundle 5 pour, and passes through filling concrete
Hole is arranged runs through vertical reinforcement and the vertical prestressing bundle of steel reinforced concrete transition structure, improve transitional region resistance to tension and with under
The connection reliability in layer concrete region.
Described king-post steel reinforced concrete transition structure also comprises:
Skirtboard (stirrup) 6, it is arranged on holds bearing plate 2 outer ring, wraps up lower-layer concrete top in the way of the similar the brim of a hat,
Improving concrete local anti-pressure ability, monnolithic case linking transition is smooth and easy.
In the present embodiment, the detailed description of the invention of this king-post steel reinforced concrete transition structure is: do not comprise the king-post of xoncrete structure 7
Steel reinforced concrete transition structure after pre-manufactured completes in factory, is transported to scene, and to lower floor's tower body concrete segment, (top layer 4～6m does not waters in lifting
Note) on, through vertical reinforcement 4 and vertical prestressing bundle 5 in filling concrete hole 201, pour into a mould lower shrinkage concrete, treat coagulation
After soil reaches design strength requirement, stretch-draw vertical prestressing bundle 5, form overall king-post steel reinforced concrete transition structure.
The present invention and the difference of conventional coupling arrangement:
The invention have the advantages that
1, the present invention is different from the connection of rigidity pressure-bearing surface, suddenlys change without separating surface rigidity, pressure-bearing surface has been offered enough fillings
Orifice, both ensure that vibrating of lower-layer concrete, also ensure that the concrete compression performance in fill orifice, does not relies on steel end and holds
Direct load transmission between face and concrete.
2, the present invention is different from flexible PBL shear connector connection, and the load transmission of PBL shear connector concentrates on top layer partial zones
Territory, is unfavorable for the raising of bearing capacity, and cannot arrange guarantee switching performance between the bonded steel construction of PBL and xoncrete structure
Prestressed component, and fractional load is transferred to concrete by the WELDING STUDS that present configuration load first passes through upper strata relative flexibility
Structure, then pass to xoncrete structure by the bearing plate of lower floor's relative stiffness, whole transitional region internal loading uniformly transfers, and closes
Reason is reliable.
3, vertical reinforcement ensure that transitional region and with being reliably connected of lower-layer concrete region；
4, vertical prestressing bundle provides resistance to tension for steel reinforced concrete transition structure local, makes the present invention can operate with the big of king-post
Eccentric compression position.
5, according to compatibility of deformation analysis and experimental result, in steel reinforced concrete transition structure, there is " upper strata in WELDING STUDS force-bearing situation
Greatly, lower floor is little " feature, the vertical prestressing in concrete, layer concrete compression in order, with steel construction deformation assist mutually
Adjust, make the uniform force of levels WELDING STUDS.
6, it is arranged on group's plate of end bearing plate outer ring, concrete is partially formed multidirectional constraint, improve the anti-of concrete
Pressure energy power, and tower body suddenlys change without obvious profile.
7, the sections connection scheme of globality, is greatly improved the connection reliability of toughened internal stress, its switching performance
Match with upper strata steel construction and lower-layer concrete structure.
Although present disclosure has been made to be discussed in detail by above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read foregoing, for the present invention's
Multiple amendment and replacement all will be apparent from.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (6)
1. a king-post steel reinforced concrete transition structure, it is characterised in that comprise: lattice steel tower column (1), its upper end connects tower body head tower
Section, lower end connects tower body concrete segment；
Described lattice steel tower column (1) comprises steel plate unencryption district, encrypted area of steel plate, steel plate secondary the most successively
Encrypted area and steel plate Tertiary infilling district, encrypted area of described steel plate, steel plate secondary encrypted area and steel plate Tertiary infilling district shape
Becoming steel plate encrypted area, this lattice steel tower column (1) forms rigidity lattice, by tower body stress spread to whole pressure-bearing surface；
Described steel plate unencryption district comprises column steel construction main body (101) and is connected to column steel construction main body (101) inside
Some tower bodies main structure steel plate (102)；Encrypted area of described steel plate is set up on the architecture basics in steel plate unencryption district
Some junction steel plates (103), the two ends of this junction steel plate (103) connect column steel construction main body (101) and the main knot of tower body respectively
Structure steel plate (102)；If described steel plate secondary encrypted area sets up involvement on the architecture basics of encrypted area of steel plate further
Connecing steel plate (103), the two ends of this junction steel plate (103) connect column steel construction main body (101) and tower body main structure steel plate respectively
(102)；Described steel plate Tertiary infilling district comprises end bearing plate (2), and its upper end connects under column steel construction main body (101)
End, lower end connects tower body concrete segment, described end bearing plate (2) arranges some filling concrete holes (201)；
Described king-post steel reinforced concrete transition structure also comprises:
Some WELDING STUDSs (3), its all columns steel construction main body (101) being arranged in steel plate encrypted area, tower body main structure steel
On plate (102) and junction steel plate (103), this WELDING STUDS (3) progressively transmits upper strata steel construction stress to lower-layer concrete structure, knot
After structure stress is progressively unloaded by WELDING STUDS, remaining head tower load is delivered on concrete surface by end bearing plate (2)；
Some vertical reinforcements (4), it is arranged in the filling concrete hole (201) on end bearing plate (2), runs through whole steel plate one
Secondary encrypted area, steel plate secondary encrypted area and steel plate Tertiary infilling district, it is mixed that this vertical reinforcement (4) ensure that in steel reinforced concrete transitional region
Solidifying soil and the concrete under it form entirety；
Xoncrete structure (7), it is cast in whole steel plate encrypted area, is filled in column steel construction main body (101), the main knot of tower body
Between structure steel plate (102), junction steel plate (103), WELDING STUDS (3), vertical reinforcement (4) and vertical prestressing bundle (5), and it is filled in
End bearing plate (2) filling concrete hole (201) in, xoncrete structure (7) by lattice steel tower column (1), end bearing plate (2),
It is an entirety that WELDING STUDS (3), vertical reinforcement (4) and vertical prestressing bundle (5) pour, and is arranged by filling concrete hole and runs through
The vertical reinforcement of steel reinforced concrete transition structure and vertical prestressing bundle, improve transitional region resistance to tension and with lower-layer concrete district
The connection reliability in territory.
2. king-post steel reinforced concrete transition structure as claimed in claim 1, it is characterised in that described king-post steel reinforced concrete transition structure is also wrapped
Containing some vertical prestressing bundles (5), it is arranged in the filling concrete hole (201) on end bearing plate (2), runs through whole steel plate
Encrypted area, this vertical prestressing bundle (5) provides permanently or temporarily resistance to tension for steel reinforced concrete transitional region.
3. king-post steel reinforced concrete transition structure as claimed in claim 1, it is characterised in that the described company in steel plate secondary encrypted area
Connect the quantity quantity more than the junction steel plate (103) in encrypted area of steel plate of steel plate (103).
4. king-post steel reinforced concrete transition structure as claimed in claim 1, it is characterised in that the described perforate on end bearing plate (2)
Rate is 40% ~ 60%, and optimize concrete under pressure-bearing surface pours condition, makes part tower body load by the upper and lower coagulation of pressure-bearing surface
Soil directly transmission, significantly reduces the pressure-bearing steel plate pressure to lower-layer concrete.
5. king-post steel reinforced concrete transition structure as claimed in claim 1, it is characterised in that described column steel construction main body (101),
Tower body main structure steel plate (102) and junction steel plate (103) are connected by welding manner, described lattice steel tower column (1) and end
Bearing plate (2) is connected by welding manner, described WELDING STUDS (3) by welding manner connect column steel construction main body (101),
Tower body main structure steel plate (102) and junction steel plate (103).
6. king-post steel reinforced concrete transition structure as claimed in claim 1, it is characterised in that described king-post steel reinforced concrete transition structure is also wrapped
Containing: skirtboard (6), it is arranged on end bearing plate (2) outer ring, wraps up lower-layer concrete top, improves concrete local anti-pressure ability,
Monnolithic case linking transition is smooth and easy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610642632.7A CN106087710A (en) | 2016-08-08 | 2016-08-08 | A kind of king-post steel reinforced concrete transition structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610642632.7A CN106087710A (en) | 2016-08-08 | 2016-08-08 | A kind of king-post steel reinforced concrete transition structure |
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| Publication Number | Publication Date |
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| CN106087710A true CN106087710A (en) | 2016-11-09 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610642632.7A Pending CN106087710A (en) | 2016-08-08 | 2016-08-08 | A kind of king-post steel reinforced concrete transition structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109468954A (en) * | 2018-10-29 | 2019-03-15 | 中交二航局第四工程有限公司 | A kind of form of construction work of anchorage anchor system |
-
2016
- 2016-08-08 CN CN201610642632.7A patent/CN106087710A/en active Pending
Non-Patent Citations (2)
| Title |
|---|
| 张利;张彦;唐博学;郭建军;: "大榭第二大桥主桥主塔钢混结合段施工关键技术", 公路, no. 09, pages 1 * |
| 杜程: "单索面斜拉桥索塔钢-混结合段传力机理研究", 优秀硕士学位论文全文库, pages 2 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109468954A (en) * | 2018-10-29 | 2019-03-15 | 中交二航局第四工程有限公司 | A kind of form of construction work of anchorage anchor system |
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