CN106869012A - Using the prefabricated thin-wall bent cap of prestressing with bond system - Google Patents
Using the prefabricated thin-wall bent cap of prestressing with bond system Download PDFInfo
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- CN106869012A CN106869012A CN201710190445.4A CN201710190445A CN106869012A CN 106869012 A CN106869012 A CN 106869012A CN 201710190445 A CN201710190445 A CN 201710190445A CN 106869012 A CN106869012 A CN 106869012A
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- bent cap
- bridge
- regular reinforcement
- wall
- top board
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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
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of prefabricated thin-wall bent cap of use prestressing with bond system, including outer concrete construction and its internal hollow area, hollow area is embedded with bent cap inner bag；Outer concrete construction includes bent cap top board, bent cap base plate and bent cap web, and two blocks of bent cap webs are respectively perpendicular between two sides for being arranged at bent cap top board and bent cap base plate, and the two ends of outer concrete construction are provided with beam-ends wall；It is equipped with the beam-ends wall of two ends in deformed bar anchorage, bent cap top board and tensioning has the deformed bar of direction across bridge in bent cap web, deformed bar extends to the deformed bar anchorage of other end beam-ends wall from the deformed bar anchorage of one end beam-ends wall.The present invention effectively reduces the overall weight of bent cap, thus at the scene assembling construction when reduce the use of heavy construction equipment, reduce the difficulty of on-site consolidation construction, save site operation measure cost；While because bent cap preponderance is to the infringement caused by pavement of road during reducing transhipment bent cap.
Description
Technical field
The present invention relates to bridge technology field, more particularly to a kind of prefabricated thin-wall bent cap of use prestressing with bond system.
Background technology
Prefabricated bridge technique has been had been widely used in bridge construction engineering at present, what existing precast bridge was commonly used
There is " concrete prefabricated bent cap+concrete column " structure based on " embedded sleeve barrel connection " or based on " grouting bellows " connection
System.
But said structure system has concrete, and bent cap weight is bigger than normal.Especially for bridge single span across footpath
For the bridge of more than 30m, bridge more than 24m wide, no matter bridge which kind of superstructure, one weight of precast concrete bent cap is used
At least up to 150 tons of amount.For 150 tons of the precast concrete bent cap of at least weighing, site operation must configure heavy construction machine
Tool, working measure takes higher, and difficulty of construction is larger；Meanwhile, precast concrete bent cap is transported to job site from pre-fabricated factory,
No matter use which kind of means of transport, transport by way of road can't bear the heavy load, road may be subject to crushing broken under weight
It is bad.
The content of the invention
In view of the drawbacks described above of prior art, technical purpose of the invention is to provide a kind of using prestressing with bond system
The prefabricated thin-wall bent cap of system, improves that the transfer track path loss evil that prior art bent cap preponderance causes is big, difficulty of construction is big, construction
The defect such as measure expense is high.
To achieve the above object, the invention provides a kind of prefabricated thin-wall bent cap of use prestressing with bond system, including
Outer concrete is constructed and is embedded with bent cap with the hollow area inside outer concrete construction, the hollow area
Courage；The outer concrete construction includes bent cap top board, bent cap base plate and bent cap web, and two blocks of bent cap webs are respectively perpendicular
It is arranged between the bent cap top board and two sides of the bent cap base plate, the two ends of the outer concrete construction are provided with beam
End wall；It is equipped with beam-ends wall described in two ends in deformed bar anchorage, the bent cap top board and is opened in the bent cap web
Drawing has the deformed bar of direction across bridge, and the deformed bar is extended to separately from the deformed bar anchorage of beam-ends wall described in one end
The deformed bar anchorage of beam-ends wall described in one end.
Further, the outer concrete construction sets the tabula that twice are vertically arranged with the confluence of bridge column pier
Plate, the top of the diaphragm plate is fixedly connected with the bent cap top board, and the bottom of the diaphragm plate is fixed with the bent cap base plate
Connection；Embedded sleeve barrel and the subsidiary anchor bar of the embedded sleeve barrel, the embedded sleeve barrel interface court are provided with the diaphragm plate
Under, for being attached with the bridge column pier.
Further, the bent cap top board, the bent cap base plate, the bent cap web and the diaphragm plate by grade not
Strong concrete less than C70 grades is poured.
Further, configure general in the bent cap top board, the bent cap web, the bent cap base plate and the diaphragm plate
Logical reinforcing bar；Direction across bridge regular reinforcement and vertical bridge are respectively configured in the bent cap top board to regular reinforcement, are divided in the bent cap web
Not Pei Zhi direction across bridge regular reinforcement and vertical regular reinforcement, direction across bridge regular reinforcement and vertical bridge are respectively configured in the bent cap base plate
To regular reinforcement, vertical bridge is respectively configured in the diaphragm plate to regular reinforcement and vertical regular reinforcement.
Further, the direction across bridge regular reinforcement for being configured in the bent cap top board is steel bar stress, for cooperateing with
The direction across bridge stress that deformed bar participates in bent cap is stated, the described vertical bridge configured in the bent cap top board is surface layer to regular reinforcement
Anticracking reinforcing bar；The direction across bridge regular reinforcement configured in the bent cap web is surface layer anticracking reinforcing bar, in the bent cap web
The described vertical regular reinforcement of configuration is steel bar stress, the vertical applied force for participating in the bent cap；Match somebody with somebody in the bent cap base plate
The described vertical bridge put is surface layer anticracking reinforcing bar to regular reinforcement and the direction across bridge regular reinforcement；Configured in the diaphragm plate
The vertical bridge is steel bar stress to regular reinforcement and the vertical regular reinforcement, for participating in the bent cap and bridge column pier
The local pressure-bearing stress in junction.
Further, the cross-sectional outling of the hollow area is rectangle, and the beam overall of the hollow area is 1.8-2.2m,
Total a height of 1.5-2.1m of the hollow area, the bent cap top plate thickness is 20-30cm, and the bent cap web thickness is 20-
30cm, the bent cap base plate thickness is 20-50cm, and the tabula plate thickness is 30cm.
Further, the bent cap inner bag is light-weight high-polymer polymer inner bag, the light-weight high-polymer polymer inner bag
Equivalent density be not higher than 5kN/m3。
Further, the deformed bar is high strength low relaxed steel strand wires, and the deformed bar anchorage is intermediate plate
Anchor.
Further, the top surface of the bent cap top board is provided with pinner, and the pinner is used to install top structural bearings.
Further, the bottom of the pinner is provided with dark beam, the dark depth of beam be not less than the height of the pinner and
15cm is not less than, the width of the width not less than the pinner of the dark beam is configured with regular reinforcement in the dark beam.
Beneficial effects of the present invention：
The present invention has the advantages that as a result of said structure design：Be designed as bent cap hollow by the present invention
Thin-wall configuration, hollow area sets lightweight inner bag, on the one hand can the inside template of self-assembling formation bent cap make prefabricated construction simpler
Easily, on the other hand effectively reduce the overall weight of bent cap, thus at the scene assembling construction when reduce heavy construction equipment
Using, reduce on-site consolidation construct difficulty, save site operation measure cost；Reduce simultaneously and transport during bent cap
Because bent cap preponderance is to the infringement caused by pavement of road.
The technique effect of design of the invention, concrete structure and generation is described further below with reference to accompanying drawing, with
It is fully understood from the purpose of the present invention, feature and effect.
Brief description of the drawings
Fig. 1 is the main view semi-section structural representation of a preferred embodiment of the invention.
Fig. 2 be Fig. 1 in along line A-A profile.
Fig. 3 be Fig. 1 in along line B-B profile.
Fig. 4 is main view section top board deformed bar arrangement schematic diagram in a preferred embodiment of the invention.
Fig. 5 be Fig. 4 in along line A-A profile.
Fig. 6 is main view perspective web deformed bar arrangement schematic diagram in a preferred embodiment of the invention.
In figure, 1 bent cap top board；11 top board deformed bars；2 bent cap webs；21 web deformed bars；3 bent cap base plates；
4 diaphragm plates；41 embedded sleeve barrels；42 anchor bars；5 beam-ends walls；51 intermediate plate anchors；6 bent cap inner bags；7 pinners；8 dark beams；9 bridges stand
Stub；91 reserved steel bar stresses
Specific embodiment
As Figure 1-3, a specific embodiment of the invention, the superstructure across footpath of the present embodiment Bridge for 30m~
35m, bridge 23m~26m wide.The present embodiment structure includes the hollow section inside outer concrete construction and outer concrete construction
Domain, the cross-sectional outling of hollow area is rectangle, and the beam overall of hollow area is 1.8-2.2m, total a height of 1.5- of hollow area
2.1m, hollow area is embedded with bent cap inner bag 6, and bent cap inner bag 6 is light-weight high-polymer polymer inner bag, what the present embodiment was selected
Bent cap inner bag is vinyon PE inner bags, and the equivalent density of light-weight high-polymer polymer inner bag is not higher than 5kN/m3。
Outer concrete construction includes bent cap top board 1, bent cap base plate 2 and bent cap web 3, and two blocks of bent cap webs 2 hang down respectively
Directly it is arranged between bent cap top board 1 and two sides of bent cap base plate 3, the two ends of outer concrete construction are provided with beam-ends wall 5；Outward
Layer concrete is constructed and sets the diaphragm plate 4 that twice are vertically arranged, top and the lid of diaphragm plate 4 with the confluence of bridge column pier 9
Back plate 1 is fixedly connected, and the bottom of diaphragm plate 4 is fixedly connected with bent cap base plate 3；Embedded sleeve barrel 41 and pre- is provided with diaphragm plate 4
Bury the subsidiary anchor bar 42 of sleeve, embedded sleeve barrel interface down, for being attached with bridge column pier 9.
Bent cap top board 1, bent cap base plate 3, bent cap web 2 and diaphragm plate 4 are not less than C70 grades of high intensity coagulation by grade
Soil is poured.
Regular reinforcement is configured in bent cap top board 1, bent cap web 2, bent cap base plate 3 and diaphragm plate 4, it is general in the present embodiment
The strength grade of logical reinforcing bar is not less than HRB400；Direction across bridge regular reinforcement and vertical bridge are respectively configured to ordinary steel in bent cap top board 1
It is respectively configured in muscle, bent cap web 2 in direction across bridge regular reinforcement and vertical regular reinforcement, bent cap base plate 3 and is respectively configured direction across bridge
Regular reinforcement and vertical bridge are respectively configured vertical bridge to regular reinforcement and vertical regular reinforcement to regular reinforcement in diaphragm plate 4.
The direction across bridge regular reinforcement configured in bent cap top board 1 is steel bar stress, for cooperateing with deformed bar to participate in bent cap
Direction across bridge stress, in bent cap top board configure vertical bridge to regular reinforcement be surface layer anticracking reinforcing bar；The horizontal stroke configured in bent cap web 2
Bridge is surface layer anticracking reinforcing bar to regular reinforcement, and the vertical regular reinforcement configured in bent cap web 2 is steel bar stress, for participating in covering
The vertical applied force of beam；The vertical bridge configured in bent cap base plate 3 is surface layer anticracking reinforcing bar to regular reinforcement and direction across bridge regular reinforcement；
The vertical bridge configured in diaphragm plate 4 is steel bar stress to regular reinforcement and vertical regular reinforcement, vertical for participating in bent cap and bridge
The local pressure-bearing stress in stub junction.
The thickness of bent cap top board 1 is 20-30cm, and the thickness of bent cap web 2 is 20-30cm, and the thickness of bent cap base plate 3 is 20-50cm,
The thickness of diaphragm plate 4 is 30cm.
The top surface of bent cap top board 1 is provided with pinner 7, and pinner 7 is used to install bridge superstructure bearing, and transmission superstructure is passed
The load come.
The bottom of pinner 7 is provided with dark beam 8, and the height of dark beam 8 is not less than the height of pinner 7 and is not less than 15cm, dark beam 8
Width is configured with regular reinforcement not less than the width of pinner 7 in dark beam 8.Dark beam 8 is set can effectively spread bearing pad stone 7 and pass
The vertical force come, reduces the local stress suffered by bent cap top board 1.
As Figure 4-Figure 6, deformed bar anchorage 51, in the present embodiment, deformed bar are equipped with two ends beam-ends wall 5
Anchorage is intermediate plate anchor 51, and tensioning has the top board deformed bar 11 of direction across bridge in bent cap top board 1, and tensioning has horizontal stroke in bent cap web 2
Bridge to web deformed bar 21, top board deformed bar 11 and web deformed bar 21 are from the pre- of one end beam-ends wall 5
Stress anchorage of reinforcement 51 extends to the deformed bar anchorage 51 of other end beam-ends wall 5.In the present embodiment, deformed bar is height
Intensity underrelaxation steel strand wires.The control stress for prestressing of above-mentioned deformed bar is taken according to current specifications.Additionally, art technology
Personnel, should be by " permanent condition occurs without tension (load action mark it is to be understood that the present invention is used as prestressed concrete member
Accurate value is combined) " technical standard be designed.
Prefabricated thin-wall bent cap of the present invention is prefabricated in factory, and bent cap inner bag is positioned over into design attitude first, then carries out
Assembling reinforcement is constructed, and assembling reinforcement construction includes that regular reinforcement colligation, deformed bar pipeline location are installed and embedded sleeve barrel
Install；Wherein, embedded sleeve barrel arrangement in the horizontal plane should be according to the reserved steel bar stress of bridge column pier in the horizontal plane
Arrangement and correspond, it is prefabricated after the completion of the connector of embedded sleeve barrel should expose from bent cap base plate root edge, for bridge column
Pier is attached.Embedded sleeve barrel and its subsidiary anchor bar, are prior art, and its structure will not be repeated here.
Assembling reinforcement construction completion makes bent cap inner bag reliably be fixed among bar-mat reinforcement, and last casting concrete is formed
Outer concrete construction including bent cap top board, bent cap web and bent cap base plate.Bent cap inner bag can be hollow body or solid
Body, controls its equivalent density not higher than 5kN/m3.The impulsive force and concrete that bent cap inner bag is produced in casting concrete are produced
Static pressure effect under, should have enough rigidity, excessive deformation must not occur, its stiffness index should be by existing national highway work
Rigidity requirement in journey job specfication to plank sheathing is performed.
Additionally, those skilled in the art it is to be understood that prefabricated thin-wall bent cap of the present invention as bridge important primary structure member,
Should consider toward the method for side unbalance loading by automobile track lateral arrangement in calculating is designed, and be carried out in automobile track load action
Horizontal reduction coefficient must not be considered during combination.
As shown in figure 1, the present invention is as follows with the connection method of bridge column pier：The top of bridge column pier 9 is using reserved
Steel bar stress 91 is stretched out as joint, after column pier 9 and the closely connected split of bent cap of the present invention, the reserved stress at the top of column pier 9
Reinforcing bar 91 is inserted in the embedded sleeve barrel 41 of bent cap of the present invention, reserved steel bar stress 91 and the present invention at the top of the stub that then opposes
Space between the embedded sleeve barrel 41 of bent cap irrigates closely knit, to be irrigated inorganic ungauged regions grouting using inorganic contraction-free grouting concrete
After material reaches the scheduled time and reaches design strength, it is believed that bridge column pier is connected with bent cap of the present invention and finishes.Wherein, it is inorganic
Contraction-free grouting concrete is prior art, and its performance should meet Shanghai City specifications of engineering construction《Precast assembly bridge pier technical regulation》
The related request of (DG/TJ 08-2160-2015).
Reserved steel bar stress 91 should be main steel bar stress of the bridge column pier 9 in a certain Impact direction, should reliable earth anchor
It is fixed in column pier 9.After column pier is connected with bent cap of the present invention and finishes, steel bar stress 91 is reserved with the formation of embedded sleeve barrel 41
Jointing should possess the I grades of mechanical property of joint (according to《Highway bridge and culvert construction technique normalizing》(JTG/T F50-2011) is attached
The related request for recording A2 is performed).
Preferred embodiment of the invention described in detail above.It should be appreciated that one of ordinary skill in the art without
Need creative work just can make many modifications and variations with design of the invention.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical scheme, all should be in the protection domain being defined in the patent claims.
Claims (10)
1. a kind of prefabricated thin-wall bent cap of use prestressing with bond system, it is characterised in that including outer concrete construction and institute
The hollow area inside outer concrete construction is stated, the hollow area is embedded with bent cap inner bag；The outer concrete structure
Make including bent cap top board, bent cap base plate and bent cap web, two blocks of bent cap webs are respectively perpendicular and are arranged at the bent cap top board
And two sides of the bent cap base plate between, the two ends of the outer concrete construction are provided with beam-ends wall；Beam-ends described in two ends
It is equipped with wall in deformed bar anchorage, the bent cap top board and tensioning has the prestressing force of direction across bridge in the bent cap web
Reinforcing bar, the deformed bar extends to the pre- of beam-ends wall described in the other end from the deformed bar anchorage of beam-ends wall described in one end
Stress anchorage of reinforcement.
2. the prefabricated thin-wall bent cap of use prestressing with bond system according to claim 1, it is characterised in that the outer layer
The confluence of concrete construction and bridge column pier sets the diaphragm plate that twice are vertically arranged, the top of the diaphragm plate with it is described
Bent cap top board is fixedly connected, and the bottom of the diaphragm plate is fixedly connected with the bent cap base plate；It is provided with pre-buried in the diaphragm plate
Sleeve and the subsidiary anchor bar of the embedded sleeve barrel, the embedded sleeve barrel interface down, for entering with the bridge column pier
Row connection.
3. the prefabricated thin-wall bent cap of use prestressing with bond system according to claim 2, it is characterised in that the bent cap
Top board, the bent cap base plate, the bent cap web and the diaphragm plate are poured by the strong concrete that grade is not less than C70 grades
Build.
4. the prefabricated thin-wall bent cap of use prestressing with bond system according to claim 3, it is characterised in that the bent cap
Regular reinforcement is configured in top board, the bent cap web, the bent cap base plate and the diaphragm plate；In the bent cap top board respectively
Configuration direction across bridge regular reinforcement and vertical bridge are respectively configured direction across bridge regular reinforcement and vertical to regular reinforcement in the bent cap web
Regular reinforcement, is respectively configured direction across bridge regular reinforcement and vertical bridge to regular reinforcement in the bent cap base plate, divide in the diaphragm plate
Bridge Pei Zhi not indulged to regular reinforcement and vertical regular reinforcement.
5. the prefabricated thin-wall bent cap of use prestressing with bond system according to claim 4, it is characterised in that the bent cap
The direction across bridge regular reinforcement configured in top board is steel bar stress, for cooperateing with the deformed bar to participate in the cross-bridges of bent cap
To stress, the described vertical bridge configured in the bent cap top board is surface layer anticracking reinforcing bar to regular reinforcement；Match somebody with somebody in the bent cap web
The direction across bridge regular reinforcement put be surface layer anticracking reinforcing bar, in the bent cap web configure described vertical regular reinforcement be by
Power reinforcing bar, the vertical applied force for participating in the bent cap；The described vertical bridge configured in the bent cap base plate is to regular reinforcement and institute
State direction across bridge regular reinforcement and be surface layer anticracking reinforcing bar；The described vertical bridge configured in the diaphragm plate is to regular reinforcement and described perpendicular
Steel bar stress is to regular reinforcement, for participating in the local pressure-bearing stress of the bent cap and bridge column pier junction.
6. the prefabricated thin-wall bent cap of use prestressing with bond system according to claim 5, it is characterised in that described hollow
The cross-sectional outling in region is rectangle, and the beam overall of the hollow area is 1.8-2.2m, total a height of 1.5- of the hollow area
2.1m, the bent cap top plate thickness is 20-30cm, and the bent cap web thickness is 20-30cm, and the bent cap base plate thickness is
20-50cm, the tabula plate thickness is 30cm.
7. according to the prefabricated thin-wall bent cap of any described use prestressing with bond systems of claim 1-6, it is characterised in that institute
Bent cap inner bag is stated for light-weight high-polymer polymer inner bag, the equivalent density of the light-weight high-polymer polymer inner bag is not higher than 5kN/
m3。
8. according to the prefabricated thin-wall bent cap of any described use prestressing with bond systems of claim 1-6, it is characterised in that institute
Deformed bar is stated for high strength low relaxed steel strand wires, the deformed bar anchorage is intermediate plate anchor.
9. according to the prefabricated thin-wall bent cap of any described use prestressing with bond systems of claim 1-6, it is characterised in that institute
The top surface for stating bent cap top board is provided with pinner, and the pinner is used to install top structural bearings.
10. the prefabricated thin-wall bent cap of use prestressing with bond system according to claim 9, it is characterised in that the pad
The bottom of stone is provided with dark beam, and the dark depth of beam is not less than the height of the pinner and is not less than 15cm, the width of the dark beam
Degree is configured with regular reinforcement not less than the width of the pinner in the dark beam.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710190445.4A CN106869012B (en) | 2017-03-28 | 2017-03-28 | Using the prefabricated thin-wall bent cap of prestressing with bond system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710190445.4A CN106869012B (en) | 2017-03-28 | 2017-03-28 | Using the prefabricated thin-wall bent cap of prestressing with bond system |
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| CN106869012A true CN106869012A (en) | 2017-06-20 |
| CN106869012B CN106869012B (en) | 2018-06-26 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108677685A (en) * | 2018-05-31 | 2018-10-19 | 湖南大学 | A kind of ultra-high performance concrete-part girder steel combination bent cap and its construction method |
| CN109440634A (en) * | 2018-12-11 | 2019-03-08 | 上海市城市建设设计研究总院（集团）有限公司 | The prefabricated high strength concrete hollow bent cap structure that internal model can be taken off |
| CN109881574A (en) * | 2019-04-18 | 2019-06-14 | 上海市城市建设设计研究总院（集团）有限公司 | Using the prefabricated bent cap in π type cross section and its method for prefabricating of external prestressing steels |
| CN109881575A (en) * | 2019-04-18 | 2019-06-14 | 上海市城市建设设计研究总院（集团）有限公司 | Using the prefabricated bent cap in π type cross section and its method for prefabricating of prestressing with bond muscle |
| CN110396915A (en) * | 2019-07-11 | 2019-11-01 | 重庆大学 | U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap and thin wall steel tube concrete pier stud joint structure and construction technology |
| CN110847044A (en) * | 2019-11-15 | 2020-02-28 | 中交第二航务工程局有限公司 | Semi-prefabricated assembled bent cap construction method |
| CN114892505A (en) * | 2022-05-11 | 2022-08-12 | 中铁第四勘察设计院集团有限公司 | Combined gate-type pier structure and construction method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108677685A (en) * | 2018-05-31 | 2018-10-19 | 湖南大学 | A kind of ultra-high performance concrete-part girder steel combination bent cap and its construction method |
| CN108677685B (en) * | 2018-05-31 | 2024-01-16 | 湖南大学 | Ultra-high-performance concrete-part steel beam combined bent cap and construction method thereof |
| CN109440634A (en) * | 2018-12-11 | 2019-03-08 | 上海市城市建设设计研究总院（集团）有限公司 | The prefabricated high strength concrete hollow bent cap structure that internal model can be taken off |
| CN109440634B (en) * | 2018-12-11 | 2024-02-06 | 上海市城市建设设计研究总院（集团）有限公司 | Prefabricated high-strength concrete hollow bent cap structure with removable internal mold |
| CN109881574A (en) * | 2019-04-18 | 2019-06-14 | 上海市城市建设设计研究总院（集团）有限公司 | Using the prefabricated bent cap in π type cross section and its method for prefabricating of external prestressing steels |
| CN109881575A (en) * | 2019-04-18 | 2019-06-14 | 上海市城市建设设计研究总院（集团）有限公司 | Using the prefabricated bent cap in π type cross section and its method for prefabricating of prestressing with bond muscle |
| CN109881575B (en) * | 2019-04-18 | 2024-03-12 | 上海市城市建设设计研究总院（集团）有限公司 | Pi-shaped cross section prefabricated bent cap adopting internal prestressed tendons and prefabricating method thereof |
| CN109881574B (en) * | 2019-04-18 | 2024-04-09 | 上海市城市建设设计研究总院（集团）有限公司 | Pi-shaped cross section prefabricated bent cap adopting external prestressed tendons and prefabricating method thereof |
| CN110396915A (en) * | 2019-07-11 | 2019-11-01 | 重庆大学 | U-shaped Steel Thin-Wall-prestress reinforcement Combined concrete bent cap and thin wall steel tube concrete pier stud joint structure and construction technology |
| CN110847044A (en) * | 2019-11-15 | 2020-02-28 | 中交第二航务工程局有限公司 | Semi-prefabricated assembled bent cap construction method |
| CN110847044B (en) * | 2019-11-15 | 2021-09-14 | 中交二航局第一工程有限公司 | Semi-prefabricated assembled bent cap construction method |
| CN114892505A (en) * | 2022-05-11 | 2022-08-12 | 中铁第四勘察设计院集团有限公司 | Combined gate-type pier structure and construction method |
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| CN106869012B (en) | 2018-06-26 |
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