CN106498847A - A kind of prefabricated bent cap and attachment structure and the method for attachment of prefabricated stand column - Google Patents
A kind of prefabricated bent cap and attachment structure and the method for attachment of prefabricated stand column Download PDFInfo
- Publication number
- CN106498847A CN106498847A CN201611180768.7A CN201611180768A CN106498847A CN 106498847 A CN106498847 A CN 106498847A CN 201611180768 A CN201611180768 A CN 201611180768A CN 106498847 A CN106498847 A CN 106498847A
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- China
- Prior art keywords
- prefabricated
- stand column
- link slot
- bent cap
- prefabricated stand
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 8
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 30
- 239000011374 ultra-high-performance concrete Substances 0.000 claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 8
- 238000002360 preparation method Methods 0.000 claims description 6
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 3
- 150000002632 lipids Chemical class 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 13
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000004567 concrete Substances 0.000 description 5
- 238000005056 compaction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 239000004574 high-performance concrete Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
A kind of prefabricated bent cap and attachment structure and the method for attachment of prefabricated stand column, including prefabricated stand column and prefabricated bent cap, preform lid erection is on prefabricated stand column, prefabricated bent cap is provided with link slot, lower ending opening of the upper end open of link slot more than link slot, also, the area of lower ending opening is less than the upper surface area of prefabricated stand column；Some presstressed reinforcing steels are embedded with prefabricated stand column, presstressed reinforcing steel stretches out prefabricated stand column certain length, and the presstressed reinforcing steel for stretching out is distributed in bell mouth shape in link slot, fill ultra-high performance concrete in link slot.The construction technology of the present invention is simple, and construction precision requires low, safe and reliable, efficient quick, and rapid construction is significant.
Description
Technical field
The present invention relates to engineering bridge technical field, more particularly to the attachment structure of a kind of prefabricated bent cap and prefabricated stand column and
Method of attachment.
Background technology
With wideling popularize and development for precast concrete, domestic many architectural engineerings begin to use precast assembly skill
Art, is constructed by through engineering approaches production and assembled in situ, can achieve the construction objects such as safety durable, quick construction, low-carbon environment-friendly, can
Building waste and building sewage is greatly decreased, is reduced building noise, is improved construction quality, become the green ring that country advocates energetically
Protect energy saving building.For precast assembly bridge pier, node connecting portion is the weak link in whole bridge pier, if processed not
When easily causing to destroy under high-intensity earthquake, therefore for this key position needs to pay special attention to.
Normal concrete is vibrated coagulation with instruments such as shock clubs in construction as a kind of heterogeneous material of porous
Soil, so as to concrete compaction, but has leaked or has shaken if shaking, and just occurs that the quality such as cavity, honeycomb, pitted skin lack
Fall into, there is ultra-high performance concrete (UHPC) Self-leveling and high intensity can overcome these normal defects.UHPC is promoted
Application is reinforcing energy-saving and emission-reduction, the effective way of Air Pollution prevention and control, it is possible to increase construction quality, extends Building life cycle, carries
Ability of preventing and reducing natural disasters is risen, is conducive to the adjustment for promoting cement industry structure.Although high performance concrete cost is slightly higher, but if only
It is to be applied topically to key position, higher cost performance can be obtained.
Fixed press anchorage product is ripe, extensively applies.The class of the arrangement of fixed press anchorage and common stretching end anchorage
Same, directly can be embedded in concrete.Strain in areas of plasticity hinge reinforcing bar is larger, and reinforcing bar easily enters yield situation, if
Plastic hinge this regional area adopts presstressed reinforcing steel, because its intensity is high, presstressed reinforcing steel can be delayed to enter yield situation, can be made
Precast pier has self-resetting capability.During the seismic loading being subjected in future, the residual displacement of bridge pier can be caused less, carried
High anti-seismic ability.
Content of the invention
In view of the drawbacks described above that prior art is present, the present invention provides the connection knot of a kind of prefabricated bent cap and prefabricated stand column
Structure and method of attachment.
To achieve these goals, the technical solution adopted in the present invention is：
A kind of prefabricated bent cap and the attachment structure of prefabricated stand column, including prefabricated stand column and prefabricated bent cap, the prefabricated bent cap
It is erected on the prefabricated stand column, the prefabricated bent cap is provided with link slot, the upper end open of the link slot is more than the connection
The lower ending opening of groove, also, the area of the lower ending opening is less than the upper surface area of the prefabricated stand column；The prefabricated stand column
Some piece presstressed reinforcing steels are inside embedded with, and the presstressed reinforcing steel stretches out the prefabricated stand column certain length, the presstressed reinforcing steel for stretching out
It is distributed in bell mouth shape in the link slot, in the link slot, fills ultra-high performance concrete.
Preferably, the presstressed reinforcing steel is distributed and in a ring in the presstressed reinforcing steel on the cross section of the prefabricated stand column
The outer steel bar stress for being equipped with annular spread.
Preferably, the presstressed reinforcing steel is embedded in the prefabricated stand column by fixed press anchorage.
Preferably, the presstressed reinforcing steel adopts prestress wire.
Preferably, passing through epoxy resin between the bottom of the edge of the upper surface of the prefabricated stand column and the prefabricated bent cap
Layer connection.
A kind of prefabricated bent cap and the method for attachment of prefabricated stand column, implement attachment structure described above, and its step is：
1) preparation of prefabricated stand column；
2) preparation of prefabricated bent cap；
3) epoxy lipid layer is applied at the edge of the top surface of prefabricated stand column, then by preform lid erection on prefabricated stand column, and
The presstressed reinforcing steel for stretching out prefabricated stand column is all embedded in link slot, and prefabricated bent cap is positioned；
4) after prefabricated bent cap is properly positioned, the presstressed reinforcing steel colligation that stretches out is distributed in link slot into bell mouth shape,
Then ultra-high performance concrete is poured into into link slot；
5) after pouring into ultra-high performance concrete in link slot, when the ultra-high performance concrete in link slot reaches design by force
Degree more than 100% when, tensioning is carried out to prestress wire with post stretching, sealing off and covering anchorage is then carried out.
Using the Advantageous Effects that above-mentioned technical proposal is brought it is：
By the present invention in that using presstressed reinforcing steel so that node district stress performance is greatly improved；
The present invention makes full use of high-strength prestress steel strand wires, and in the case of large deformation, join domain has self-resetting capability
And its flexible performance is good, construction precision require relatively low；
The present invention pours into grout sleeve and link slot using ultra-high performance concrete UHPC, takes full advantage of superelevation in construction
The high fluidity of performance concrete and good anti-isolation, Qinshui ability, the on the other hand characteristic of its microdilatancy having can be with
Strengthen the reliability of connection；
The construction technology of the present invention is simple, and construction precision requires low, safe and reliable, efficient quick, and rapid construction is had
Important meaning.
Description of the drawings
Fig. 1 is the facade layout drawing of the attachment structure of the prefabricated bent cap and prefabricated stand column of one embodiment of the invention；
Fig. 2 is the plane graph of the prefabricated bent cap of one embodiment of the invention；
Fig. 3 is the elevation of the prefabricated bent cap of one embodiment of the invention；
Fig. 4 is the I-I sectional views of the prefabricated bent cap of one embodiment of the invention；
Fig. 5 is the steel bar stress structural map of the prefabricated stand column of one embodiment of the invention；
Fig. 6 is the presstressed reinforcing steel layout drawing of the prefabricated stand column of one embodiment of the invention；
Fig. 7 is the elevation of the prefabricated stand column of one embodiment of the invention；
Fig. 8 is the II-II sectional views of the prefabricated stand column of one embodiment of the invention；
Fig. 9 is the welding figure of the prefabricated bent cap top steel bar stress of one embodiment of the invention.
In figure, the prefabricated bent caps of 1-；2- prefabricated stand columns；3- link slots；4- stirrups；5- presstressed reinforcing steels；6- fixed press anchorages；
7- epoxy resin layers；The first steel bar stresses of 10-；The second steel bar stresses of 11-.
Specific embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with each reality of the accompanying drawing to the present invention
The mode of applying is explained in detail.
Please comprehensive reference Fig. 1-9, a kind of prefabricated bent cap and prefabricated stand column attachment structure, including prefabricated stand column 2 and prefabricated
Bent cap 1, prefabricated bent cap 1 are erected on prefabricated stand column 2, are provided with link slot 3 in prefabricated bent cap 1, and the upper end open of link slot 3 is more than
The lower ending opening of link slot 3, also, the area of lower ending opening is less than the upper surface area of prefabricated stand column 2, is that prefabricated bent cap 1 hangs
Fulcrum is provided during dress；Some presstressed reinforcing steels 5 are embedded with prefabricated stand column 2, presstressed reinforcing steel 5 stretches out 2 certain length of prefabricated stand column,
The presstressed reinforcing steel 5 for stretching out is distributed in link slot 3 into bell mouth shape by 4 colligation of stirrup, fills UHPC in link slot 3.The design
Used in have high-yield strength presstressed reinforcing steel 5, in the case of the 1 occurred level displacement of prefabricated bent cap, areas of plasticity hinge have
There is self-resetting capability, so prefabricated bent cap 1 and prefabricated stand column 2 connect more reliable, safety；By pouring into toward in link slot 3
The characteristics of UHPC, self-compaction uniform using UHPC, it is fully contacted can prestress wire and the link slot 3 of prefabricated bent cap 1,
Stress performance is improved, the safety of engineering has been ensured.
Presstressed reinforcing steel 5 adopts prestress wire, prestress wire to be embedded in prefabricated stand column by fixed press anchorage 6
In 2.Fixed press anchorage 6 includes fixing anchor slab and extruded sleeve, and the head of prestress wire puts extruded sleeve, by special machine
Tool extruding, prestress wire of holding with a firm grip after making extruded sleeve generation plastic deformation, a relay of prestressed steel strand wires is by extruding
Set passes to component, i.e. prefabricated stand column 2 by fixed anchor slab.
Connected (such as Fig. 1 by epoxy resin layer 7 between the bottom of the edge of the upper surface of prefabricated stand column 2 and prefabricated bent cap 1
Shown).
Presstressed reinforcing steel 5 is distributed on the cross section of prefabricated stand column 2 in a ring and is equipped with annular point in the outer of presstressed reinforcing steel 5
Second steel bar stress 11 (as shown in Figure 7 and Figure 8) of cloth.
The outer of 1 cross-sectional area of prefabricated bent cap is uniformly equipped with the first steel bar stress 10 (as shown in figures 4 and 9).
A kind of prefabricated bent cap and the method for attachment of prefabricated stand column, using above-mentioned attachment structure, its step is：
1) preparation of prefabricated stand column 2；
2) preparation of prefabricated bent cap 1；
3) epoxy lipid layer is applied at the edge of the top surface of prefabricated stand column 2, then prefabricated bent cap 1 is erected on prefabricated stand column 2,
And the presstressed reinforcing steel 5 for stretching out prefabricated stand column 2 is all embedded in link slot 3, and prefabricated bent cap 1 is positioned；
4) after prefabricated bent cap 1 is properly positioned, the presstressed reinforcing steel 5 in the link slot 3 of prefabricated bent cap 1 is in loudspeaker by stirrup 4
Mouth shape distribution colligation, and first steel bar stress 10 on 1 top of prefabricated bent cap is welded, then pour into into link slot 3
UHPC；
5) after perfusion UHPC in link slot 3, when the UHPC in link slot 3 reaches more than the 100% of design strength, use
Post stretching carries out tensioning to prestress wire, then carries out sealing off and covering anchorage again.
The advantage of do so, on the one hand further improves self-resetting capability；The concrete pulling of another aspect areas of plasticity hinge
Stress very little, easily ftractures, after tensioning, using the partial prestressing for applying in advance, can improve the cracking lotus of areas of plasticity hinge
Carry, improve service behaviour.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art the invention discloses technical scope in, the change or replacement that can readily occur in,
Should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
It is defined.
Claims (6)
1. the attachment structure of a kind of prefabricated bent cap and prefabricated stand column, it is characterised in that：Including prefabricated stand column and prefabricated bent cap, described
On the prefabricated stand column, the prefabricated bent cap is provided with link slot to preform lid erection, and the upper end open of the link slot is more than
The lower ending opening of the link slot, also, the area of the lower ending opening is less than the upper surface area of the prefabricated stand column；Described
Some presstressed reinforcing steels are embedded with prefabricated stand column, and the presstressed reinforcing steel stretches out the prefabricated stand column certain length, and that stretched out is described
Presstressed reinforcing steel is distributed in bell mouth shape in the link slot, fills ultra-high performance concrete in the link slot.
2. attachment structure as claimed in claim 1, it is characterised in that：The presstressed reinforcing steel is in the cross section of the prefabricated stand column
On in a ring distribution and the outer steel bar stress for being equipped with annular spread in the presstressed reinforcing steel.
3. attachment structure as claimed in claim 1, it is characterised in that：The presstressed reinforcing steel is embedded in by fixed press anchorage
In the prefabricated stand column.
4. attachment structure as claimed in claim 1, it is characterised in that：The presstressed reinforcing steel adopts prestress wire.
5. attachment structure as claimed in claim 1, it is characterised in that：The edge of the upper surface of the prefabricated stand column and described pre-
Connected by epoxy resin layer between the bottom of bent cap processed.
6. the method for attachment of a kind of prefabricated bent cap and prefabricated stand column, implements the connection any one of the claims 1-5
Structure, its step is：
1) preparation of prefabricated stand column；
2) preparation of prefabricated bent cap；
3) epoxy lipid layer is applied at the edge of the top surface of prefabricated stand column, then by preform lid erection on prefabricated stand column, and will stretch
The presstressed reinforcing steel for going out prefabricated stand column is all embedded in link slot, and prefabricated bent cap is positioned；
4) after prefabricated bent cap is properly positioned, the presstressed reinforcing steel colligation that stretches out is distributed in link slot into bell mouth shape, then
Ultra-high performance concrete is poured into into link slot；
5) after pouring into ultra-high performance concrete in link slot, when the ultra-high performance concrete in link slot reaches design strength
When more than 100%, tensioning is carried out to prestress wire with post stretching, then carry out sealing off and covering anchorage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611180768.7A CN106498847B (en) | 2016-12-19 | 2016-12-19 | A kind of connection structure and connection method of prefabricated bent cap and prefabricated stand column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611180768.7A CN106498847B (en) | 2016-12-19 | 2016-12-19 | A kind of connection structure and connection method of prefabricated bent cap and prefabricated stand column |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106498847A true CN106498847A (en) | 2017-03-15 |
| CN106498847B CN106498847B (en) | 2019-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611180768.7A Expired - Fee Related CN106498847B (en) | 2016-12-19 | 2016-12-19 | A kind of connection structure and connection method of prefabricated bent cap and prefabricated stand column |
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| Country | Link |
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| CN (1) | CN106498847B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167289A (en) * | 2017-05-17 | 2017-09-15 | 上海应用技术大学 | A kind of great cantilever precast assembly bent cap load test method |
| CN108532445A (en) * | 2018-07-04 | 2018-09-14 | 深圳市市政设计研究院有限公司 | A kind of connecting structure and its construction method of prefabricated bent cap and Precast Pier Columns |
| CN109024249A (en) * | 2018-08-16 | 2018-12-18 | 福建工程学院 | A kind of connector uses the spigot-and-socket construction precast assembly bridge pier of cast-in-place UHPC material |
| CN110219486A (en) * | 2019-07-10 | 2019-09-10 | 福州大学 | A kind of prestressing force assembled UHPC bicycle shed construction and its construction method |
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| KR100748636B1 (en) * | 2006-08-30 | 2007-08-14 | 차진이 | Concrete pier having copping and constructing method therefor |
| CN102493335A (en) * | 2011-12-02 | 2012-06-13 | 天津城市建设学院 | Prefabricating prestress steel tube confined concrete pier |
| CN204589787U (en) * | 2015-04-28 | 2015-08-26 | 北京城建设计发展集团股份有限公司 | The prefabricated bent cap of the T-shaped pier of Bridges on Urban Rail Transit |
| CN105088937A (en) * | 2014-05-08 | 2015-11-25 | 郑州大学 | Hollow slab bridge with hinge joint having opposite grooves and building method of hollow slab bridge |
| KR20160005257A (en) * | 2014-07-04 | 2016-01-14 | (주)에스앤씨산업 | Precast Coping, the Combination Structure of Column and Coping, and its Construction Method |
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| CN106049259A (en) * | 2016-06-16 | 2016-10-26 | 安徽省交通规划设计研究总院股份有限公司 | Bridge integrally-assembled pier and construction method |
| CN206273875U (en) * | 2016-12-19 | 2017-06-23 | 上海应用技术大学 | A kind of attachment structure of prefabricated bent cap and prefabricated stand column |
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2016
- 2016-12-19 CN CN201611180768.7A patent/CN106498847B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100748636B1 (en) * | 2006-08-30 | 2007-08-14 | 차진이 | Concrete pier having copping and constructing method therefor |
| CN102493335A (en) * | 2011-12-02 | 2012-06-13 | 天津城市建设学院 | Prefabricating prestress steel tube confined concrete pier |
| CN105088937A (en) * | 2014-05-08 | 2015-11-25 | 郑州大学 | Hollow slab bridge with hinge joint having opposite grooves and building method of hollow slab bridge |
| KR20160005257A (en) * | 2014-07-04 | 2016-01-14 | (주)에스앤씨산업 | Precast Coping, the Combination Structure of Column and Coping, and its Construction Method |
| CN204589787U (en) * | 2015-04-28 | 2015-08-26 | 北京城建设计发展集团股份有限公司 | The prefabricated bent cap of the T-shaped pier of Bridges on Urban Rail Transit |
| CN105442434A (en) * | 2015-12-21 | 2016-03-30 | 上海市城市建设设计研究总院 | Slot type connecting structure for prefabricated stand column and prefabricated cover beam of bridge and splicing method for prefabricated stand column and prefabricated cover beam |
| CN106049259A (en) * | 2016-06-16 | 2016-10-26 | 安徽省交通规划设计研究总院股份有限公司 | Bridge integrally-assembled pier and construction method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167289A (en) * | 2017-05-17 | 2017-09-15 | 上海应用技术大学 | A kind of great cantilever precast assembly bent cap load test method |
| CN108532445A (en) * | 2018-07-04 | 2018-09-14 | 深圳市市政设计研究院有限公司 | A kind of connecting structure and its construction method of prefabricated bent cap and Precast Pier Columns |
| CN109024249A (en) * | 2018-08-16 | 2018-12-18 | 福建工程学院 | A kind of connector uses the spigot-and-socket construction precast assembly bridge pier of cast-in-place UHPC material |
| CN109024249B (en) * | 2018-08-16 | 2023-10-24 | 福建工程学院 | Socket type structure prefabricated assembly pier with joint made of cast-in-situ UHPC material |
| CN110219486A (en) * | 2019-07-10 | 2019-09-10 | 福州大学 | A kind of prestressing force assembled UHPC bicycle shed construction and its construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106498847B (en) | 2019-01-22 |
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Granted publication date: 20190122 |