CN206487068U - Assembled FRP strengthens steel core concrete column - Google Patents
Assembled FRP strengthens steel core concrete column Download PDFInfo
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- CN206487068U CN206487068U CN201720139575.0U CN201720139575U CN206487068U CN 206487068 U CN206487068 U CN 206487068U CN 201720139575 U CN201720139575 U CN 201720139575U CN 206487068 U CN206487068 U CN 206487068U
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- core concrete
- frp
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- retraction
- steel pipe
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Abstract
The utility model is related to a kind of assembled FRP enhancings steel core concrete column, including FRP, steel pipe, core concrete.The assembled cylinder includes some prefabricated subsections, and the prefabricated subsection is divided into protruding end and retraction end.The core concrete stretches out steel pipe, retraction end retraction steel pipe in section protruding end, and stretches out size less than retraction size.Predeterminable duct is used to being in the milk or wearing muscle inside the core concrete.The steel pipe can set filling/slurry outlet at retraction end.The FRP ensures covering section assembling position.Cylinder section assembling process is：Section assembling is positioned, steel-pipe welding, slip casting between section, pastes FRP.Using prestressing force or non-prestressed through muscle cooperation section assembling connection.This novel structure is simple, and good corrosion resistance, stress performance is good, and power transmission is reliable, and steel using amount is few, easy construction, small to surrounding environment influence.The assembling of building structure can be achieved, the requirement of assembled system and feature under adverse circumstances is adapted to.
Description
Technical field
The utility model is related to a kind of assembled FRP enhancings concrete filled steel tube cylinder structure, available for assembled architecture, bridge
In beam engineering.
Background technology
FRP (fibre reinforced composites) enhancing steel core concrete column be in common steel tube concrete surface in a specific way
A kind of new composite structure post that arrangement FRP sheet materials are formed.It is used as a kind of lightweight, high-strength, corrosion resistant high performance composite
Material, FRP introducing can improve cylinder mechanical property, by the arrangement for adjusting FRP, it is possible to achieve cylinder mechanical property
Diversity, therefore the designability of the coupled column is strong.In addition, FRP also may be regarded as a kind of anti-corrosion medium to protect steel pipe, therefore
FRP introducing can also effectively improve the durability of cylinder, compared with traditional steel core concrete column, FRP enhancing steel tube concretes
Earth pillar is more suitable in the engineering structure of the high requirement for anticorrosion such as coastal waters, island.
Section assembling formula bridge pier is a kind of assembled column structure for science of bridge building, is used for Reinforced Concrete Bridge
In.Bridge pier is divided some sections, prefabricated in advance in factory, is then shaped in on-site consolidation.It can be subtracted using assembled bridge pier
Shaoshi work to the destruction of surrounding environment, reduction to the interference of periphery traffic, save building time, be conducive to the big rule of engineering structure
Mould, standardized production, are conducive to construction quality management and control.
Strengthen the structure type and section assembling formula bridge pier principle of concrete filled steel tube based on FRP, the utility model proposes one
Assembled FRP enhancing concrete filled steel tube cylinder structures are planted, strengthen the characteristic of steel tube-concrete composite structure form using FRP, if
Count rational cylinder section to divide and connected mode, promote application of the FRP enhancing concrete filled steel tubes in assembled architecture.
Utility model content
The utility model proposes the reasonable assembling mode that a kind of FRP strengthens steel pipe concrete segment, to ensure to assemble rear pillar
The mechanical property of body will not decline because setting assembled section, while ensureing that the simple of assembling process, high efficiency and cylinder are constructed
Operability.
The technical solution adopted in the utility model is：
A kind of assembled FRP strengthens steel core concrete column, and cylinder is spliced by some prefabricated subsections；Each prefabricated subsection
It is made of steel duct filling core concrete, arrangement FRP is pasted outside steel pipe.
The prefabricated subsection is divided into protruding end and retraction end, and core concrete stretches out steel pipe in protruding end, and retraction end is caved in
Steel pipe, protruding end, which stretches out size and is less than retraction end, caves in end size.
Reserving hole channel is set inside the core concrete of the prefabricated subsection, as being in the milk or wear muscle, reserving hole channel quantity
Corresponding adjustment is made with the visual specific design situation in position.
Prefabricated subsection protruding end core concrete can make normal section or variable cross-section form.
The core concrete protruding end of the prefabricated subsection can be with predetermined coupling parts with retraction end end face.
Filling/grout outlet can be set at retraction end in the steel pipe of the prefabricated subsection；Steel pipe inner wall can set shear connector.
The utility model has the advantages that：
1st, the utility model take full advantage of FRP strengthen concrete filled steel tube combining form feature, realize core concrete,
Steel pipe stitching position is separated, it is ensured that the mechanical property after section assembling.
2nd, the Cast-in-Situ Segment between the utility model is by setting adjacent segment, reduces the prefabricated precision of section core concrete
It is required that, it is easy to construction.
3rd, the utility model passes through in the differently arranged FRP of damaged surface, it is ensured that the continuity of cylinder after assembled,
Simultaneously by adjusting FRP arrangement, the differentiation construction of the different force parts of cylinder is realized, cylinder designability is strong.
Brief description of the drawings
Fig. 1 is prefabricated subsection schematic diagram of the present utility model.
Fig. 2 is optimization prefabricated subsection schematic diagram of the present utility model.
Fig. 3 is Precast Concrete Segmental Bridges schematic diagram of the present utility model.
Fig. 4 is optimization Precast Concrete Segmental Bridges schematic diagram of the present utility model.
Embodiment
Strengthen the assembled process of steel core concrete column with reference to Fig. 1-4 couples of pin-connected panel FRP to be further described.
A kind of assembled FRP strengthens steel core concrete column, and cylinder is spliced by some prefabricated subsections；Each prefabricated subsection
It is that filling core concrete 2 in the inside of steel pipe 1 is made, arrangement FRP 6 is pasted outside steel pipe 1.
The prefabricated subsection is divided into protruding end and retraction end, and core concrete 2 is stretched out in protruding end in steel pipe 1, retraction end
Fall into steel pipe 1, protruding end, which stretches out size and is less than retraction end, caves in end size.
The inside of core concrete 2 of the prefabricated subsection sets reserving hole channel 3-1, as being in the milk or wear muscle, reserving hole channel
The visual specific design situation of quantity 3-1 and position makes corresponding adjustment.
Prefabricated subsection protruding end core concrete can make normal section or variable cross-section form.
The protruding end of core concrete 2 of the prefabricated subsection can be with predetermined coupling parts 4 with retraction end end face.
Filling/grout outlet 3-2 can be set at retraction end in the steel pipe 1 of the prefabricated subsection；The inwall of steel pipe 1 can set shearing resistance to connect
Fitting.
Assembling process is as follows：The retraction end of previous section will be inserted during assembling when the protruding end of Anterior Segment, after the positioning of section
Two welding of steel pipe 1 are formed into welded seam area 7, afterwards by reserving hole channel 3-1 to filling non-shrinkage cement mortar 5 between two segment,
After optionally carrying out auxiliary connection using prestressing force or the non-prestressed muscle that runs through after mortar hardening between section, finally prefabricated
The surface layout FRP6 of section welded seam area 7.
Embodiment
1. prefabricated subsection form；
The prefabricated subsection post can have multiple section form, such as circular, rectangle and other odd-shaped cross sections, can be single
One section may also be variable cross-section；By taking single circular cross-section section as an example, including steel pipe and internal core concrete, such as Fig. 1 is prefabricated
Section one end, core concrete protrudes from the segment distance of steel pipe edge one (this end of prefabricated subsection is referred to as concrete jag)；In advance
The section other end processed, core concrete retraction steel pipe one segment distance (this end of prefabricated subsection is referred to as concrete retraction end)；Core is mixed
Solidifying soil retraction size l1More than the protrusion size l of other end core concrete2；Can in core concrete reserving hole channel, the duct
As grout hole or muscle hole can be worn, duct runs through core concrete.Also it can be retracted in section on the steel pipe at end and filling/pulp is set
Hole.Filling/slurry outlet of two positions optionally one also can optionally retain simultaneously.Column with variable cross-sections prefabricated subsection sectional dimension according to
Accordingly adjusted according to cylinder facade size.
2. Precast Concrete Segmental Bridges；
1) prefabricated subsection is in place：Previous section concrete retraction end is inserted into assembled section concrete protruding end, and carried out
Section is positioned.
2) steel-pipe welding：On the premise of steel tube section machining accuracy is ensured, after two segment is in place, forward and backward section steel pipe
Tight contact, now welds two segment steel pipe each other.
3) it is in the milk (or wearing prestress wire post-grouting)：Because the bulge size of protruding end concrete is less than retraction end coagulation
, there is gap between assembled rear core concrete protrusion end face in place and previous section concrete retraction end face in the retraction distance of soil,
Non-shrink mortar is irrigated by reserved injected hole, the continuity of post integral core concrete is realized.The non-shrinkage cement mortar
Intensity is preferably higher than preformed core concrete strength, and weak link is occurred without to ensure that cylinder pours position after.For in section steel
Pipe side wall, which is set, fills the cylinder that (going out) starches hole, after the stifled operation of progress weldering in good time after non-shrinkage cement mortar hardening.
4. paste FRP；
After the completion of some Precast Concrete Segmental Bridges, required according to cylinder design, ring, longitudinal direction are pasted according to various combination mode
FRP, it is ensured that longitudinal FRP covers each section steel-pipe welding position, and longitudinal FRP overlap joint, which is tried one's best, avoids steel-pipe welding position.FRP can
Using polytype, CFRP, GFRP etc., it would however also be possible to employ mixing FRP or the form of the longitudinal variety classes FRP combinations of ring,
Depending on design requirement.
3. optimization design；
As optimization, prefabricated subsection can be made to following change, as shown in Fig. 2 specific optimization design content is needed regarding engineering
Depending on asking.
1) steel tie or other similar connections part can be preset in core concrete protruding end end face and retraction end end face, increased
By force with the connection of non-shrinkage cement mortar, the continuity of core concrete between enhancing different segment.
2) connector can be set in steel duct, strengthens the globality of steel pipe and core concrete in same section.
3) grouting duct position, quantity and size are depending on Specific construction situation.
4) when reserving hole channel is used as wearing muscle hole, prestressing force or non-prestressed steel strand wires can be used through muscle, also can be using pre-
Stress or non-prestressed FRP muscle.
5) reserving hole channel is used as when wearing muscle hole, can between muscle body and duct cement injection mortar, can not also fill, but should protect
Card irrigates non-shrinkage cement mortar in section junction, to ensure the continuity of core concrete.
6) variable cross-section form can be made in core concrete protruding end, to reduce core concrete protuberance during precast segment
The required precision divided, the space after assembly between core concrete and previous section steel pipe utilizes non-shrinkage cement mortar to fill.
Above-mentioned section connected mode avoids cylinder bending rigidity to be occurred compared with macromutation at section assembling；Cylinder is becoming greatly
Separation will not be produced under shape between section, continuity is more excellent；It is easier to realize because carrying out steel pipe Precision Machining, passes through the later stage between section
The method of grouting can make up the position deviation of the adjacent segment caused by core concrete end face geometrical defect again, be conducive to control
Splicing accuracy processed.
As shown in figure 3, splicing step is as follows：A. the protruding end core concrete of prefabricated subsection 2 is inserted into section 1 when assembled
The retraction end of (assembled section in place).B. section 1 and the seam crossing steel pipe of section 2 are welded.C. non-shrinkage cement mortar is irrigated, is treated
It is hardened.D. FRP is wrapped up.
Optimize section assembling signal as shown in figure 4, splicing step is as follows：A. the protrusion end core of section 2 is mixed when assembled
The retraction end of solidifying soil insertion section 1 (assembled section in place).B. positioned using what previous section was reserved through muscle 8, will be default
Reserving hole channel is passed through through muscle 8.C. muscle welds section 1 and the seam crossing steel pipe of section 2.D. non-shrinkage cement mortar is irrigated.If e.
Connected using prestressing force, this step stretch-draw prestressing force wraps up FRP through muscle d..
In order to ensure the pouring quality of non-shrinkage cement mortar, can optimization design grouting port position and quantity, rationally choosing
Use grouting method.After steel-pipe welding, Yi Duihankouchu carries out proper treatment, to ensure that damaged surface is smooth, convenient subsequently to paste
FRP operations.
Protection domain of the present utility model includes but is not limited to the product and pattern of above-mentioned embodiment, any to meet
The pin-connected panel FRP of the utility model claims strengthens steel core concrete column and any those skilled in the art is to its institute
The appropriate change or modification done, should all fall the protection domain in this patent.
Claims (7)
1. a kind of assembled FRP strengthens steel core concrete column, it is characterised in that：Cylinder is spliced by some prefabricated subsections；Often
One prefabricated subsection is made of steel duct filling core concrete, and arrangement FRP is pasted outside steel pipe.
2. assembled FRP as claimed in claim 1 strengthens steel core concrete column, it is characterised in that：
The prefabricated subsection is divided into protruding end and retraction end, and core concrete stretches out steel pipe in protruding end, and cave in steel pipe at retraction end,
Protruding end, which stretches out size and is less than retraction end, caves in end size.
3. assembled FRP as claimed in claim 1 strengthens steel core concrete column, it is characterised in that：
Reserving hole channel is set inside the core concrete of the prefabricated subsection, as being in the milk or wear muscle, reserving hole channel quantity and position
Put visual specific design situation and make corresponding adjustment.
4. assembled FRP as claimed in claim 1 strengthens steel core concrete column, it is characterised in that：
Prefabricated subsection protruding end core concrete can make normal section or variable cross-section form.
5. assembled FRP as claimed in claim 1 strengthens steel core concrete column, it is characterised in that：
The core concrete protruding end of the prefabricated subsection can be with predetermined coupling parts with retraction end end face.
6. assembled FRP as claimed in claim 1 strengthens steel core concrete column, it is characterised in that：
Filling/grout outlet can be set at retraction end in the steel pipe of the prefabricated subsection；Steel pipe inner wall can set shear connector.
7. assembled FRP as claimed in claim 1 strengthens steel core concrete column, it is characterised in that：
Assembling process is as follows：The protruding end of current prefabricated subsection is inserted to the retraction end of previous prefabricated subsection, prefabricated section during assembling
Welded still pipe after Duan Dingwei, is in the milk by reserving hole channel between two prefabricated subsections, after after mortar hardening between prefabricated subsection afterwards
Optionally using prestressing force or non-prestressed through muscle progress auxiliary connection, finally in prefabricated subsection join domain surface cloth
Put FRP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720139575.0U CN206487068U (en) | 2017-02-16 | 2017-02-16 | Assembled FRP strengthens steel core concrete column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720139575.0U CN206487068U (en) | 2017-02-16 | 2017-02-16 | Assembled FRP strengthens steel core concrete column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206487068U true CN206487068U (en) | 2017-09-12 |
Family
ID=59765448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720139575.0U Expired - Fee Related CN206487068U (en) | 2017-02-16 | 2017-02-16 | Assembled FRP strengthens steel core concrete column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206487068U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107060216A (en) * | 2017-02-16 | 2017-08-18 | 沈阳建筑大学 | Assembled FRP strengthens steel core concrete column |
| CN107366386A (en) * | 2017-08-08 | 2017-11-21 | 广东工业大学 | A kind of multitube confined concrete double-walled open tubular column and production technology |
| CN108166833A (en) * | 2017-11-16 | 2018-06-15 | 广东工业大学 | A kind of prefabricated multitube confined concrete double-walled open tubular column, building technology and column tube tower |
| CN113356037A (en) * | 2021-05-31 | 2021-09-07 | 郑州大学 | Cast-in-place UHPC-NC combination formula antidetonation pier in outer assembly |
-
2017
- 2017-02-16 CN CN201720139575.0U patent/CN206487068U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107060216A (en) * | 2017-02-16 | 2017-08-18 | 沈阳建筑大学 | Assembled FRP strengthens steel core concrete column |
| CN107366386A (en) * | 2017-08-08 | 2017-11-21 | 广东工业大学 | A kind of multitube confined concrete double-walled open tubular column and production technology |
| CN108166833A (en) * | 2017-11-16 | 2018-06-15 | 广东工业大学 | A kind of prefabricated multitube confined concrete double-walled open tubular column, building technology and column tube tower |
| CN113356037A (en) * | 2021-05-31 | 2021-09-07 | 郑州大学 | Cast-in-place UHPC-NC combination formula antidetonation pier in outer assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170912 Termination date: 20190216 |