CN108797312A - A kind of bent cap structure and its construction method - Google Patents
A kind of bent cap structure and its construction method Download PDFInfo
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- CN108797312A CN108797312A CN201810795859.4A CN201810795859A CN108797312A CN 108797312 A CN108797312 A CN 108797312A CN 201810795859 A CN201810795859 A CN 201810795859A CN 108797312 A CN108797312 A CN 108797312A
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- construction
- bent cap
- steel beam
- cap structure
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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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- Bridges Or Land Bridges (AREA)
Abstract
The present invention relates to technical field of bridge engineering, more particularly to a kind of bent cap structure, it is characterized in that the bent cap structure includes hollow-core construction and solid construction, the wherein described solid construction is corresponding with the position of bridge pier, hollow-core construction then the position between adjacent bridge pier and bent cap to choose arm position corresponding, the perforation of steel beam is set in bent cap end tensioning external prestressing steel beam, solid construction, to realize that external prestressing steel beam turns to；The solid section of the bent cap structure connect to form entirety with bridge pier, and solid construction connect to form consolidated node with pier column.The bent cap structure of the present invention, the weight of bent cap structure can be mitigated significantly, save column, cushion cap and pile foundation dosage, reduce project cost, prefabrication and assembly construction technique can be widely applied, realizes the standardization, batch production, assembling of bent cap structure, the bridge construction for promoting China is horizontal, with good environmental benefit, Social benefit and economic benefit, it is worthy of promotion and application.
Description
Technical field
The present invention relates to technical field of bridge engineering, and in particular to a kind of bent cap structure.
Background technology
At present in the bridge construction in China, generally there are two types of types for bent cap structure：
（1）Normal concrete bent cap.Using normal concrete and prestressing with bond is set, also may be used when bent cap structure stress is smaller
Cancel prestressing with bond, regular reinforcement is only set.The type bent cap generally uses support cast-in-place technique, as " green is built for country
Build " implementation of development strategy, bent cap structure construction more and more uses precast assembly process.However, the type bent cap weight
Greatly, although can be by hollowing out loss of weight inside bent cap, due to being limited by the arrangement space of prestressing with bond, concrete material
The limitation etc. of performance, when bridge width is larger, when bent cap is larger, the weight after loss of weight is still larger, cannot be satisfied and applies
Work requirement is limited by factors such as transporting equipment, hanging device and lifting spaces, is answered when urban architecture compact district
There is prodigious difficulty with precast assembly process.
（2）Steel construction bent cap.Bent cap agent structure uses steel, and the type bent cap is light-weight, using precast assembly process
Construction, prefabrication, on-site consolidation, mechanization degree are high.However, the type bent cap late maintaining workload is very big, synthesis is made
Valence is high, is only used on a small quantity in local specific position at present.
With the continuous development of urban construction, there is an urgent need for a kind of novel cover girder constructions, can mitigate the weight of bent cap structure significantly
Amount saves column, cushion cap and pile foundation dosage, reduces project cost, is suitble to component integral prefabricated or the prefabricated transporting and hoisting of segmentation,
Prefabrication and assembly construction technique can be widely applied, meet urban architecture compact district, bridge width it is larger when rapid construction
It is required that and being convenient for late maintaining.
Invention content
In view of the above-mentioned problems, the present invention proposes a kind of bent cap structure, bent cap weight can be greatly reduced, save column,
Cushion cap and pile foundation dosage reduce project cost, prefabrication and assembly construction technique can be widely applied, and be convenient for late maintaining, into one
The bridge construction that step promotes China is horizontal.
The realization of the present invention is completed by following technical scheme：A kind of bent cap structure, it is characterised in that the bent cap structure packet
Include hollow-core construction and solid construction, wherein the solid construction is corresponding with the position of pier column, hollow-core construction then with it is adjacent
Position and bent cap between pier column to choose arm position corresponding, it is solid in bent cap end tensioning external prestressing steel beam
The perforation of steel beam is set in structure, to realize that external prestressing steel beam turns to；The solid section and pier column of the bent cap structure
Connection forms entirety, and solid construction connect to form consolidated node with pier column.
Further, the hollow-core construction is made of ultra-high performance concrete material；The solid construction uses
Ultra-high performance concrete material or common concrete material are made.
Further, the solid construction can also carry out part hollow processing.
Further, it is chosen positioned at bent cap on the outside of the hollow-core construction of arm, that is, chooses arm end and be equipped with steel beam anchor point, the body
External prestressed steel beam is anchored in bent cap and chooses steel beam anchor point on the outside of arm hollow-core construction, and bent cap end uses ultra-high performance concrete
Material.
Further, reinforcing bar should be arranged in the hollow-core construction and solid construction in its concrete material.
Further, the web of the hollow parts of the bent cap structure uses ultra-high performance concrete, can cancel described
Web position in stirrup, web position is arranged single vertical hook muscle, fully reduces web thickness.
Further, the web of the hollow-core construction, top plate and bottom plate wall thickness be 8cm ~ 12cm, also can be according to practical feelings
Condition is suitably relaxed.
Further, precast segment assembling process and integral prefabricated assembling process can be used in the bent cap structure construction.
Further, single box single chamber, single box double room and single-box multi-cell may be used in the hollow structural part of the bent cap.
Another object of the present invention is to propose a kind of construction method of bent cap structure, bent cap weight can be greatly reduced
Amount saves column, cushion cap and pile foundation dosage, reduces project cost, can be widely applied prefabrication and assembly construction technique, and after being convenient for
Phase conserves, and the bridge construction for further promoting China is horizontal.
The realization of the present invention is completed by following technical scheme：A kind of construction method of bent cap structure, it is characterised in that this is applied
Work method includes the following steps：
A, integral bent cap structure is poured in pre-fabricated factory, the integral cap girder construction includes solid construction and hollow-core construction,
Wherein solid construction position is corresponding with pier column position, hollow-core construction then the position between corresponding pier column and
Bent cap to choose arm position corresponding, the perforation of steel beam is set in solid construction, is chosen positioned at bent cap and is equipped with steel beam on the outside of the hollow-core construction of arm
Anchor point；
B, prefabricated integral cap girder construction is conserved to design strength, tensioning external prestressing steel beam, positioned at the sky for choosing arm end
Tensioning external prestressing steel beam at core structure steel beam anchor point, the steel beam in solid construction are perforated to realize external prestressing steel
Beam turns to；
C, by preform lid girder construction whole Transporting to construction site, prefabricated integral cap girder construction is installed to using hanging device
Through constructing on the bridge pier finished；
D, finally in solid construction position, pier column and bent cap structure are connected as entirety.
The realization of the present invention can also be completed by following technical scheme：A kind of construction method of bent cap structure, it is characterised in that
The construction method includes the following steps：
A, it is poured in pre-fabricated factory and builds up multiple bent cap segments, the bent cap segment includes solid construction and hollow-core construction, wherein
Solid construction position is corresponding with pier column position, the hollow-core construction then position between corresponding pier column and bent cap
To choose arm position corresponding, the perforation of steel beam is set in solid construction, steel beam anchor point is equipped with positioned at arm end is chosen；
B, preform lid girder segment is conserved to design strength, by preform lid girder segment transported batchwise to construction site；
C, bent cap segment is assembled by integral cap girder construction, installation to the bridge pier finished of having constructed using hanging device and holder
On, tensioning external prestressing steel beam, in tensioning external prestressing steel beam, solid construction at the steel beam anchor point for choosing arm end
Interior steel beam perforates to realize that external prestressing steel beam turns to；
D, finally in solid construction position, pier column and bent cap structure are connected as entirety.
Further, the hollow-core construction uses ultra-high performance concrete material；The solid construction uses superelevation
Performance concrete material or common concrete material.
Further, the solid construction connect to form consolidated node with pier column.
The bent cap structure of the present invention can mitigate the weight of bent cap structure significantly, save column, cushion cap and pile foundation and use
Amount reduces project cost, can widely apply prefabrication and assembly construction technique.It is an advantage of the invention that：
1. opposite normal concrete bent cap, can greatly reduce bent cap weight, column, cushion cap and pile foundation dosage are saved, reduces work
Journey cost, the thin-wall construction part of the bent cap structure, web, top plate and bottom plate are not provided with prestressed strand, and thickness is not
It is controlled by the construction of prestressed strand, and uses ultra-high performance concrete material, therefore thickness can greatly reduce, minimum takes
8cm ~ 12cm thickness.Construction control and concrete material of the minimum plate thickness of conventional hollow structure by prestressed strand
The control of energy, control are not less than 20cm ~ 25cm.Therefore the present invention has breakthrough in terms of substructure bent cap loss of weight, can
Prefabrication and assembly construction technique is widely applied, realizes the standardization, batch production, assembling of bent cap structure；
2. opposite steel construction bent cap, is convenient for late maintaining, good economy performance；
3. being suitble to component integral prefabricated or the prefabricated transporting and hoisting of segmentation, prefabrication and assembly construction technique can be widely applied.
Description of the drawings
The present invention is described in more detail hereinafter in connection with attached drawing.Wherein：
Fig. 1 is the elevational schematic view of novel cover girder construction in the present invention；
Fig. 2 is the A-A sectional views of Fig. 1 in the present invention；
Fig. 3 is the B-B sectional views of Fig. 1 in the present invention；
In the accompanying drawings, identical component uses identical reference numeral.
Specific implementation mode
Below in conjunction with attached drawing, by the way that a preferable specific embodiment is described in detail, the feature of the present invention is further explained
It states, in order to the understanding of technical staff of the same trade：
Such as Fig. 1-Fig. 3, figure acceptance of the bid note is respectively：Hollow-core construction 1, solid construction 2, external prestressing steel beam 3.
Hollow-core construction 1, solid construction 2 in novel cover girder construction pour integral bent cap structure in pre-fabricated factory, empty
Core structure 1 uses ultra-high performance concrete material, solid construction 2 to use common concrete material.Integral cap girder construction conserve to
After design strength, tensioning external prestressing steel beam 3.It, will by transporting equipment after 3 tensioning of external prestressing steel beam and anchoring
Preform lid girder construction is installed to having constructed using hanging device and is finished to construction site by preform lid girder construction whole Transporting
On bridge pier, finally in 2 position of solid construction, bridge pier and bent cap structure are connected as entirety.When bent cap stress is smaller, can cancel
External prestressing steel beam 3.
As shown, a specific embodiment according to the present invention, the bent cap structure is by the first hollow-core construction, the first reality
Core structure, the second hollow-core construction, the second solid construction and third hollow-core construction are connected in sequence integral cap girder construction, wherein
One hollow-core construction and third hollow-core construction are symmetrical arranged, and the first solid construction and the second solid construction are symmetrical arranged, and first is hollow
The outside of structure and third hollow-core construction is equipped with steel beam anchor point, for anchoring external prestressing steel beam, the first solid construction and
It is equipped with steel beam in second solid construction to perforate, the contact for external prestressing steel beam turns to.First hollow-core construction, second
Hollow-core construction and third hollow-core construction are body structure, using single box double room form.
Although present disclosure is discussed in detail by above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention, and protection scope of the present invention should be limited to the appended claims.
Claims (9)
1. a kind of bent cap structure, it is characterised in that the bent cap structure includes hollow-core construction and solid construction, wherein described solid
Structure is corresponding with the position of pier column, and then the position between corresponding pier column and bent cap choose arm to hollow-core construction
Position is corresponding, and the perforation of steel beam is set in bent cap end tensioning external prestressing steel beam, solid construction, is answered in advance in vitro to realize
Power steel beam turns to；The solid section of the bent cap structure connect to form entirety with pier column, and solid construction connects with pier column
It connects to form consolidated node.
2. bent cap structure according to claim 1, it is characterised in that the hollow-core construction uses ultra-high performance concrete
Material；The solid construction uses ultra-high performance concrete material or common concrete material.
3. bent cap structure according to claim 1, it is characterised in that be located on the outside of the hollow-core construction of beam-ends and be equipped with steel beam anchor
Solid point, the external prestressing steel beam are anchored in the steel beam anchor point of bent cap end, and bent cap end uses very-high performance coagulation
Soil material.
4. bent cap structure according to claim 1, it is characterised in that the hollow-core construction and solid construction, in its coagulation
Reinforcing bar should be set in soil material.
5. bent cap structure according to claim 1, it is characterised in that the web position setting of the hollow-core construction is single
It is vertical to hook muscle, fully reduce web thickness.
6. bent cap structure according to claim 1, it is characterised in that the web of the hollow-core construction, the wall of top plate and bottom plate
Thickness is 8cm ~ 12cm, also can suitably be relaxed according to actual conditions.
7. bent cap structure according to claim 1, it is characterised in that single box single chamber, single case may be used in the hollow-core construction
Dual chamber and single-box multi-cell.
8. a kind of construction method of bent cap structure, it is characterised in that the construction method includes the following steps：
A, integral bent cap structure is poured in pre-fabricated factory, the integral cap girder construction includes solid construction and hollow-core construction,
Wherein solid construction position is corresponding with pier column position, hollow-core construction then the position between corresponding pier column and
Bent cap to choose arm position corresponding, the perforation of steel beam is set in solid construction, arm end is chosen and is equipped with steel beam anchor point；
B, prefabricated integral cap girder construction is conserved to design strength, tensioning external prestressing steel beam, positioned at choosing arm end steel beam
Tensioning external prestressing steel beam at anchor point, the steel beam in solid construction perforate to realize that external prestressing steel beam turns to；
C, by preform lid girder construction whole Transporting to construction site, prefabricated integral cap girder construction is installed to using hanging device
Through constructing on the bridge pier finished；
D, finally in solid construction position, pier column and bent cap structure are connected as entirety.
9. a kind of construction method of bent cap structure, it is characterised in that the construction method includes the following steps：
A, it is poured in pre-fabricated factory and builds up multiple bent cap segments, the bent cap segment includes solid construction and hollow-core construction, wherein
Solid construction position is corresponding with pier column position, the hollow-core construction then position between corresponding pier column and bent cap
To choose arm position corresponding, the perforation of steel beam is set in solid construction, arm end is chosen and is equipped with steel beam anchor point；
B, preform lid girder segment is conserved to design strength, by preform lid girder segment transported batchwise to construction site；
C, bent cap segment is assembled by integral cap girder construction, installation to the bridge pier finished of having constructed using hanging device and holder
On, tensioning external prestressing steel beam, in tensioning external prestressing steel beam, solid construction at the steel beam anchor point for choosing arm end
Interior steel beam perforates to realize that external prestressing steel beam turns to；
D, finally in solid construction position, pier column and bent cap structure are connected as entirety.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810795859.4A CN108797312A (en) | 2018-07-19 | 2018-07-19 | A kind of bent cap structure and its construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810795859.4A CN108797312A (en) | 2018-07-19 | 2018-07-19 | A kind of bent cap structure and its construction method |
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| Publication Number | Publication Date |
|---|---|
| CN108797312A true CN108797312A (en) | 2018-11-13 |
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ID=64077559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810795859.4A Pending CN108797312A (en) | 2018-07-19 | 2018-07-19 | A kind of bent cap structure and its construction method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
| 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 |
| CN113605246A (en) * | 2021-08-24 | 2021-11-05 | 湖南大学 | Prestressed UHPC shell-concrete inner core combined bent cap structure and construction method thereof |
| CN114673077A (en) * | 2022-03-21 | 2022-06-28 | 中铁第四勘察设计院集团有限公司 | Ultra-high performance concrete gate-type pier structure and construction method |
-
2018
- 2018-07-19 CN CN201810795859.4A patent/CN108797312A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| CN113605246A (en) * | 2021-08-24 | 2021-11-05 | 湖南大学 | Prestressed UHPC shell-concrete inner core combined bent cap structure and construction method thereof |
| CN114673077A (en) * | 2022-03-21 | 2022-06-28 | 中铁第四勘察设计院集团有限公司 | Ultra-high performance concrete gate-type pier structure and construction method |
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