CN108824175A - The retarded adhesive prestressed precast pier of suspension type monorail of the Y type with flanged joint - Google Patents
The retarded adhesive prestressed precast pier of suspension type monorail of the Y type with flanged joint Download PDFInfo
- Publication number
- CN108824175A CN108824175A CN201810964407.4A CN201810964407A CN108824175A CN 108824175 A CN108824175 A CN 108824175A CN 201810964407 A CN201810964407 A CN 201810964407A CN 108824175 A CN108824175 A CN 108824175A
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- Prior art keywords
- pier
- type
- flanged joint
- shaft
- suspension type
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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.)
- Pending
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- 239000000853 adhesive Substances 0.000 title claims abstract description 27
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 27
- 239000000725 suspension Substances 0.000 title claims abstract description 24
- 238000010276 construction Methods 0.000 claims abstract description 38
- 210000002435 tendon Anatomy 0.000 claims abstract description 31
- 230000003111 delayed effect Effects 0.000 claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 14
- 239000010959 steel Substances 0.000 claims abstract description 14
- 239000004927 clay Substances 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 12
- 238000012423 maintenance Methods 0.000 abstract description 6
- 239000011150 reinforced concrete Substances 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract description 3
- 230000002787 reinforcement Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000008267 milk Substances 0.000 description 2
- 210000004080 milk Anatomy 0.000 description 2
- 235000013336 milk Nutrition 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 238000009417 prefabrication Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012360 testing method 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
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B25/00—Tracks for special kinds of railways
- E01B25/22—Tracks for railways with the vehicle suspended from rigid supporting rails
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of retarded adhesive prestressed precast piers of suspension type monorail of the Y type with flanged joint, steel construction pier top including pier shaft and Y type, ring flange is connected between pier shaft and pier top, pier shaft and pier top are precast construction, and pier shaft is the reinforced concrete structure for being equipped with several delayed bonding prestressed tendons along longitudinal direction.Suspension type monorail Pier Design is reinforced concrete structure by the present invention, and inside increases delayed bonding prestressed tendon, not only overcome that steel construction pier shaft rigidity is smaller, influences road-ability, the defects of late maintenance cost is high, and pier shaft sectional dimension can be effectively reduced and reduce pier shaft regular reinforcement quantity, to reduce line spacing, project cost is reduced, occupied area is reduced；And existing various problems when overcoming using bonded prestress technology and Non-cohesive Prestressing Force Technology are maximized favourable factors and minimized unfavourable ones combining the advantages of having bonding and Non-cohesive Prestressing Force Technology, are not necessarily to reserving hole channel, without grouting, easy construction, structure is safe and reliable.
Description
Technical field
The present invention relates to track engineering field, in particular to a kind of suspension type monorail slow cohesion of the Y type with flanged joint
Prestressing force precast pier.
Background technique
Existing suspension type sky rail Y type bridge pier, bridge pier is typically designed as steel construction, when the pier height of bridge pier is higher, nothing
Method carries out whole Transporting, can only be assembled by the way of site welding, and the quality of field welding is lower, influences structure use
Service life and structure safety.Meanwhile bridge pier as a whole when, the difficulty for positioning of constructing is very big, leverage the construction period,
And the more difficult satisfaction driving of final track girder line style is required, affect the service performance of entire rail system.In addition, using
When steel construction pier shaft, structure overall stiffness is smaller, easily influence road-ability, and late maintenance cost is high.
Summary of the invention
It is an object of the invention to overcome the above-mentioned deficiency in the presence of the prior art, a kind of Y type band flanged joint is provided
The retarded adhesive prestressed precast pier of suspension type monorail.
In order to achieve the above-mentioned object of the invention, the present invention provides following technical schemes：
A kind of retarded adhesive prestressed precast pier of suspension type monorail of the Y type with flanged joint, the steel including pier shaft and Y type
Structure pier top, is connected with ring flange between the pier shaft and pier top, the pier shaft and pier top are precast construction, and the pier shaft
For the reinforced concrete structure for being equipped with several delayed bonding prestressed tendons along longitudinal direction.
Delayed bonding prestressed tendon refers in construction stage prestress wire dilatation freedom, not with around, slow setting is bonded
Agent generates bonding, and in predetermined period after the completion of construction, presstressed reinforcing steel passes through cured slow setting adhesive and surrounding coagulation
Local products give birth to cementation.
The present invention by suspension type monorail Pier Design be reinforced concrete structure, and inside increase it is retarded adhesive prestressed
Muscle, not only overcomes that steel construction pier shaft rigidity is smaller, influences road-ability, the defects of late maintenance cost is high, and can be effective
Reduce pier shaft sectional dimension and reduce pier shaft regular reinforcement quantity, to reduce line spacing, reduces project cost, reduce land occupation face
Product.It is existing when being also avoided using retarded adhesive prestressed technology using bonded prestress technology and Non-cohesive Prestressing Force Technology
(for example, when using bonded prestress technology, pipeline pneumatic mortar point is more, heavy workload, due to prestressing tendon caliber for various problems
Smaller, mud jacking is difficult closely knit, and there are gaps, so that the presstressed reinforcing steel later period is perishable, influences structure safety, and due to prestressing tendon
Shorter, when using traditional post stretching bonded prestress technology, mud jacking loudspeaker gate material proportion is larger, increases difficulty of construction
Or it can not construct.), and there is the technological merit of bonding and prestressing without bondn to combine, it maximizes favourable factors and minimizes unfavourable ones, without pre-
It boxes out, without grouting, easy construction, structure is safe and reliable.
In particular, the precast pier can be directly used for assembled installation, due to using delayed bonding prestressed tendon, Ke Yi
It is to be transported when being assembled to scene with regard to pre-buried delayed bonding prestressed tendon when factory process, then the tensioning presstressed reinforcing steel, not only
Prefabrication and field erected time, process can be saved, labor cost and construction cost are reduced, moreover, avoiding too early
Loss of prestress caused by tensioning.
On the other hand, bridge pier is divided into two parts of pier shaft and pier top by the present invention, on the one hand facilitates processing, transport and group
On the other hand dress is also easily facilitated and is positioned to bridge pier, it is only necessary to strict control is carried out to the positioning accuracy of Y type pier top,
And the position of Y type pier top can be adjusted by the ring flange connected therebetween, the precision of positioning can be effectively improved, construction is reduced
Duration and raising construction quality.
Further, pier shaft of the invention and pier top can be precast construction, precast section can transport directly to scene into
Row installation, accelerates construction progress, reduces construction pollution, more environmentally-friendly.Connected between pier shaft and pier top by ring flange
It connects, then avoids welding quality adverse effect caused by bridge pier service life and security performance, and easily facilitate construction with after
Phase maintenance.
Preferably, the delayed bonding prestressed tendon is located at the two sides of the longitudinally asymmetric axis of the pier top, two sides in Y type pier top
Track girder be arranged relative to the longitudinally asymmetric axial symmetry, when track girder driving, pier shaft will receive biggish moment of flexure, at this time
Delayed bonding prestressed tendon is arranged in the two sides of longitudinally asymmetric axis, the bending strength and tensile strength of entire pier shaft can be increased,
Have good power transmission mechanism, can further by delayed bonding prestressed tendon be mounted on as far as possible far from the longitudinally asymmetric axis at,
Pier shaft intensity can be increased, to reduce pier shaft size.
Preferably, the delayed bonding prestressed tendon is arranged relative to the longitudinally asymmetric axial symmetry, on the one hand makes pier shaft
It is identical to the bending strength and tensile strength of two sides track girder, on the other hand, also easily facilitate construction.
Preferably, the delayed bonding prestressed tendon is symmetrical arranged in the pier shaft inner shaft, it may include lateral axial symmetry is set
It sets and is symmetrical arranged with longitudinal axis.
Preferably, the delayed bonding prestressed tendon is pierced by the pier shaft, and is fixed on the pier shaft by anchor.
Retarded adhesive prestressed current using single hole anchor device, inserting knot is more flexible compared with bonded prestress.
Preferably, the pier top includes pier top crossbeam, and bracket, the ox are equipped between the pier top crossbeam and track girder
Leg and the pier top crossbeam bolt.By adjusting the installation site of bracket, it can effectively eliminate construction error, increase construction essence
Degree, and facilitate beam body to set up, and guarantee that beam body is convenient for changing after going wrong when later period operation.
Preferably, the bracket is connected to the lower section of the pier top crossbeam by high-strength bolt, and bonding strength is high, can pacify
Dress, replacement are convenient.
Preferably, the cross sectional shape of the pier shaft is rectangle or circle.
Preferably, the pier shaft is hollow structure, reduces material utilization amount, saves construction cost.
Preferably, the delayed bonding prestressed tendon is high-strength underrelaxation slow-adhesion prestress steel strand.
Compared with prior art, beneficial effects of the present invention：
The present invention by suspension type monorail Pier Design be reinforced concrete structure, and inside increase it is retarded adhesive prestressed
Muscle, not only overcomes that steel construction pier shaft rigidity is smaller, influences road-ability, the defects of late maintenance cost is high, and can be effective
Reduce pier shaft sectional dimension and reduce pier shaft regular reinforcement quantity, to reduce line spacing, reduces project cost, reduce land occupation face
Product.It is existing when being also avoided using retarded adhesive prestressed technology using bonded prestress technology and Non-cohesive Prestressing Force Technology
Various problems, and there is the technological merit of bonding and prestressing without bondn to combine, it maximizes favourable factors and minimizes unfavourable ones, is not necessarily to reserving hole channel, nothing
It needs to be in the milk, easy construction, structure is safe and reliable.
In particular, the precast pier can be directly used for assembled installation, due to using delayed bonding prestressed tendon, Ke Yi
It is to be transported when being assembled to scene with regard to pre-buried delayed bonding prestressed tendon when factory process, then the tensioning presstressed reinforcing steel, not only
Prefabrication and field erected time, process can be saved, labor cost and construction cost are reduced, moreover, avoiding too early
Loss of prestress caused by tensioning.
On the other hand, bridge pier is divided into two parts of pier shaft and pier top by the present invention, on the one hand facilitates processing, transport and group
On the other hand dress is also easily facilitated and is positioned to bridge pier, it is only necessary to strict control is carried out to the positioning accuracy of Y type pier top,
And the position of Y type pier top can be adjusted by the ring flange connected therebetween, the precision of positioning can be effectively improved, construction is reduced
Duration and raising construction quality.
Further, pier shaft of the invention and pier top can be precast construction, precast section can transport directly to scene into
Row installation, accelerates construction progress, reduces construction pollution, more environmentally-friendly.Connected between pier shaft and pier top by ring flange
It connects, then avoids welding quality adverse effect caused by bridge pier service life and security performance, and easily facilitate construction with after
Phase maintenance.
Detailed description of the invention：
Fig. 1 is a kind of retarded adhesive prestressed precast pier of suspension type monorail of the Y type with flanged joint of the present invention
Pier shaft structural schematic diagram.
Fig. 2 is the retarded adhesive prestressed prefabricated bridge of suspension type monorail of the another kind Y type with flanged joint of the present invention
The structural schematic diagram of the pier shaft of pier.
Fig. 3 is a kind of retarded adhesive prestressed precast pier of suspension type monorail of the Y type with flanged joint of the present invention
Overall structure diagram.
It is marked in figure：1- pier shaft, 2- delayed bonding prestressed tendon, the longitudinally asymmetric axis of 3-, 4- pier top, 5- ring flange, 6- pier top
Crossbeam, 7- track girder, 8- bracket, 9- high-strength bolt.
Specific embodiment
Below with reference to test example and specific embodiment, the present invention is described in further detail.But this should not be understood
It is all that this is belonged to based on the technology that the content of present invention is realized for the scope of the above subject matter of the present invention is limited to the following embodiments
The range of invention.
As shown in figure 3, a kind of suspension type monorail of the Y type with flanged joint retarded adhesive prestressed precast pier, including pier
The pier top 4 of body 1 and Y type is connected with ring flange 5 between the pier shaft 1 and pier top 4.
The pier shaft 1 be hollow reinforced concrete precast member, as Figure 1-Figure 2, the pier shaft 1 be rectangular section or
Circular cross-section.Be equipped with two rows of delayed bonding prestressed tendons 2 along longitudinal direction in the pier shaft 1, the delayed bonding prestressed tendon 2 relative to
The longitudinally asymmetric axis 3 of the pier top 4 is symmetrical arranged, and the delayed bonding prestressed tendon 2 is (horizontal in the 1 inside axial symmetry of pier shaft
To axial symmetry and longitudinal axial symmetry) setting.
In construction, delayed bonding prestressed tendon 2 is similar to prestressing without bondn, compared with bonded prestress, does not need
Bellows is worn, does not need to be in the milk, reduces twice complicated procedures of forming, reducing live manual operation influences, and construction quality is easy
To guarantee.The delayed bonding prestressed tendon 2 passes through the pier shaft 1, and is fixed on the pier shaft 1 by anchor, delays viscous
Knot prestressing force uses single hole anchor device at present, and inserting knot is more flexible compared with bonded prestress.After slow setting adhesive curing,
Delayed bonding prestressed tendon 2 is engaged bonding with surrounding concrete formation, and reaching has viscous effect.The delayed bonding prestressed tendon 2 can replace
It is changed to slow-adhesion prestress steel strand, slow-adhesion prestress steel strand is configured with three layers, and steel strand wires (bare wire) outer layer is by corrosion-resistant
Slow setting adhesive and outer coated sheath wrap up, form two protective layers, durability is better than common bonded prestress.
The pier top 4 is prefabricated steel construction, and the pier top 4 includes pier top crossbeam 6, in the pier top crossbeam 6 and track
Bracket 8 is equipped between beam 7, the bracket 8 is connected to the lower section of the pier top crossbeam 6, the bracket 8 and the pier top crossbeam 6
It is bolted by high-strength bolt 9, the track girder 7 reconnects on the bracket 8.On the one hand, it can be adjusted by high-strength bolt 9
The position for saving bracket 8, thus the installation accuracy of adjustable track beam 7；Meanwhile the height of the ring flange 5 and the basic phase of track girder 7
It together, can be by the mounting height of regulating flange disk, to adjust the mounting height of pier top 4, thus the installation essence of adjustable track beam 7
Degree.
Above embodiments are only to illustrate the present invention and not limit the technical scheme described by the invention, although this explanation
The present invention has been described in detail referring to above-mentioned each embodiment for book, but the present invention is not limited to above-mentioned specific implementation
Mode, therefore any couple of present invention modifies or equivalent replacement；And the technical side of all spirit and scope for not departing from invention
Case and its improvement, are intended to be within the scope of the claims of the invention.
Claims (10)
1. a kind of retarded adhesive prestressed precast pier of suspension type monorail of the Y type with flanged joint, which is characterized in that including pier shaft
(1) and the steel construction pier top (4) of Y type, be connected with ring flange (5) between the pier shaft (1) and pier top (4), the pier shaft (1) and
Pier top (4) is precast construction, and the pier shaft (1) is that the reinforcing bar equipped with several delayed bonding prestressed tendons (2) is mixed along longitudinal direction
Xtah Crude Clay structure.
2. the retarded adhesive prestressed precast pier of suspension type monorail of the Y type with flanged joint according to claim 1, special
Sign is that the delayed bonding prestressed tendon (2) is located at the two sides of the longitudinally asymmetric axis (3) of the pier top (4).
3. the retarded adhesive prestressed precast pier of suspension type monorail of the Y type with flanged joint according to claim 2, special
Sign is that the delayed bonding prestressed tendon (2) is symmetrical arranged relative to the longitudinally asymmetric axis (3).
4. the retarded adhesive prestressed precast pier of suspension type monorail of the Y type with flanged joint according to claim 1, special
Sign is that the delayed bonding prestressed tendon (2) is symmetrical arranged in the pier shaft (1) inner shaft.
5. the retarded adhesive prestressed precast pier of suspension type monorail of the Y type with flanged joint according to claim 1, special
Sign is that the delayed bonding prestressed tendon (2) is pierced by the pier shaft (1), and is fixed on the pier shaft (1) by anchor
On.
6. the retarded adhesive prestressed precast pier of suspension type monorail of the Y type with flanged joint according to claim 1, special
Sign is that the pier top (4) includes pier top crossbeam (6), and bracket is equipped between the pier top crossbeam (6) and track girder (7)
(8), the bracket (8) and the pier top crossbeam (6) bolt.
7. the retarded adhesive prestressed precast pier of suspension type monorail of the Y type with flanged joint according to claim 6, special
Sign is that the bracket (8) is connected to the lower section of the pier top crossbeam (6) by high-strength bolt (9).
8. -7 any retarded adhesive prestressed prefabricated bridge of suspension type monorail of the Y type with flanged joint according to claim 1
Pier, which is characterized in that the cross sectional shape of the pier shaft (1) is rectangle or circle.
9. -7 any retarded adhesive prestressed prefabricated bridge of suspension type monorail of the Y type with flanged joint according to claim 1
Pier, which is characterized in that the pier shaft (1) is hollow structure.
10. -7 any retarded adhesive prestressed prefabricated bridge of suspension type monorail of the Y type with flanged joint according to claim 1
Pier, which is characterized in that the delayed bonding prestressed tendon (2) is high-strength underrelaxation slow-adhesion prestress steel strand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810964407.4A CN108824175A (en) | 2018-08-22 | 2018-08-22 | The retarded adhesive prestressed precast pier of suspension type monorail of the Y type with flanged joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810964407.4A CN108824175A (en) | 2018-08-22 | 2018-08-22 | The retarded adhesive prestressed precast pier of suspension type monorail of the Y type with flanged joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108824175A true CN108824175A (en) | 2018-11-16 |
Family
ID=64150517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810964407.4A Pending CN108824175A (en) | 2018-08-22 | 2018-08-22 | The retarded adhesive prestressed precast pier of suspension type monorail of the Y type with flanged joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108824175A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109763419A (en) * | 2019-03-01 | 2019-05-17 | 中铁二院工程集团有限责任公司 | A kind of connection structure of novel suspension type monorail bridge pier and track girder |
| CN109778664A (en) * | 2019-03-20 | 2019-05-21 | 中铁二院工程集团有限责任公司 | A kind of lightweight prestressed concrete beam bridge structure |
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|---|---|---|---|---|
| EP0010733A1 (en) * | 1978-10-27 | 1980-05-14 | Stephen Parazader | Guideway units for elevated guideways |
| CN103374881A (en) * | 2012-04-24 | 2013-10-30 | 上海市政工程设计研究总院（集团）有限公司 | Prefabricated segment assembling pier structure system and construction method thereof |
| CN103526947A (en) * | 2013-09-23 | 2014-01-22 | 中国建筑一局(集团)有限公司 | Slow-bonding prestress construction method suitable for staged construction of different structural parts |
| CN106988218A (en) * | 2017-02-24 | 2017-07-28 | 中铁二十五局集团第五工程有限公司 | A kind of empty rail bridge pier erection method of suspension type |
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-
2018
- 2018-08-22 CN CN201810964407.4A patent/CN108824175A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109763419A (en) * | 2019-03-01 | 2019-05-17 | 中铁二院工程集团有限责任公司 | A kind of connection structure of novel suspension type monorail bridge pier and track girder |
| CN109778664A (en) * | 2019-03-20 | 2019-05-21 | 中铁二院工程集团有限责任公司 | A kind of lightweight prestressed concrete beam bridge structure |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181116 |
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| RJ01 | Rejection of invention patent application after publication |