CN204238116U - A kind of cable stayed bridge PK type section bondbeam - Google Patents
A kind of cable stayed bridge PK type section bondbeam Download PDFInfo
- Publication number
- CN204238116U CN204238116U CN201320879600.0U CN201320879600U CN204238116U CN 204238116 U CN204238116 U CN 204238116U CN 201320879600 U CN201320879600 U CN 201320879600U CN 204238116 U CN204238116 U CN 204238116U
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- steel
- diaphragm
- bondbeam
- stayed bridge
- crossbeam
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Abstract
The utility model is a kind of cable stayed bridge PK type section bondbeam, it is characterized in that described steel work longeron comprises girder and stringer, steel structure beam comprises crossbeam, be arranged on the steel flanged beam diaphragm at crossbeam two ends, concrete slab is connected by connecting key and girder and stringer and crossbeam and steel flanged beam steel diaphragm, forms two-way slab.One open web type diaphragm is established between twice steel flanged beam diaphragm.This structure significantly can reduce the local pressure of bridge deck, improves the stress-bearing capability of steel work, has good stress performance; The reduction of streamline steel girder web plate spacing, can reduce the steel using amount of steel work, have good economy simultaneously.
Description
Technical field
The utility model belongs to technical field of bridge engineering, specifically a kind of cable stayed bridge PK type section bondbeam.
Background technology
In domestic and international large span bondbeam cable-stayed bridge main-beam section, the form of fracture of steel work mainly contains: be separated I shape, be separated little box, the large box of monolithic and be separated large box.Wherein be separated large steel beam with box shape to be combined with concrete slab and just to form cable stayed bridge PK type section bondbeam, this is a kind of emerging cable stayed bridge bondbeam form of fracture, in some, compare other section have some superiority, but less in actual applications, its stress performance and economy are still in exploration.For this reason, research and design goes out the good cable stayed bridge PK section bondbeam of a kind of reasonable stress, economic benefit, and tool is of great significance.
Utility model content
The purpose of this utility model is to provide a kind of cable stayed bridge PK type section bondbeam, can improve the stress performance of structure, and have good economy.
For reaching above object, the solution that the utility model adopts is: a kind of cable stayed bridge PK type section bondbeam, comprise steel work longeron and steel structure beam, it is characterized in that described steel work longeron comprises girder and stringer, steel structure beam comprises crossbeam, be arranged on the steel flanged beam diaphragm of crossbeam both sides, concrete slab is connected by connecting key and girder and stringer and crossbeam and steel flanged beam steel diaphragm, forms two-way slab.One open web type diaphragm is established between twice steel flanged beam diaphragm.The ratio of the spacing between two adjacent beams and two adjacent steel structural rail is between 0.8 ~ 1.2.Wherein stringer rigidity is not less than 1/30 of gooseneck rigidity, and the height of open web type diaphragm is not less than stiffening rib and crosses 1.67 times of welding hole height.
The utility model has the advantage of that this cable stayed bridge PK type section bondbeam significantly can reduce the local pressure of bridge deck, improve the stress-bearing capability of steel work, there is good stress performance; The reduction of streamline steel girder web plate spacing, can reduce the steel using amount of steel work, have good economy simultaneously.
Accompanying drawing explanation
Fig. 1 is the open web type diaphragm structure schematic diagram of the utility model cable stayed bridge PK type section bondbeam.
Fig. 2 is 1/2 steel flanged beam diaphragm sectional schematic diagram of the utility model cable stayed bridge PK type section bondbeam.
Fig. 3 is 1/2 of the utility model cable stayed bridge PK type section bondbeam without diaphragm sectional schematic diagram.
Fig. 4 is 1/2 open web type diaphragm sectional schematic diagram of the utility model cable stayed bridge PK type section bondbeam.
Fig. 5 is the steel work top floor map of the utility model cable stayed bridge PK type section bondbeam.
Detailed description of the invention
By reference to the accompanying drawings and example, this utility model cable stayed bridge PK type section bondbeam is further elaborated.
The PK type section bondbeam of certain bridge, comprises the structures such as concrete slab 1, streamline steel girder 2, steel stringer 3, gooseneck 4, steel flanged beam steel diaphragm 5, open web type steel diaphragm 6, steel anchoring structure 7.
The relation of concrete slab and steel beam column: general composite beam bridge panel is connected with steel girder and gooseneck by means of only connecting key, sometimes in order to reduce concrete slab lifting weight, the stringer that bridge deck are also very little with rigidity is connected.This processing mode bridge deck are stressed relatively simple, and for suitable bridge is to one-way slabs, but under wheel load effect, bridge deck are stressed comparatively large, and in order to control critical eigenvalue, bridge deck arrangement of reinforcement is more.In order to reduce the stressed of bridge deck, reduce arrangement of reinforcement, by girder web plate pitch smaller (general PK type section bondbeam web spacing reaches 7000 ~ 8000mm), increase the steel stringer 3 of suitable rigidity (rigidity is not less than 1/30 of transverse beam rigidity), two adjacent steel stringers 3 or the spacing between steel stringer 3 and streamline steel girder 2 is made to be 4000 ~ 5000mm, and the ratio of the spacing two between adjacent steel crossbeam 4 controls between 0.8 ~ 1.2, concrete slab 1 is made to become two-way slab from one-way slabs.Girder web plate pitch smaller, also reduces rolled steel dosage under equal stress level simultaneously.
The setting of open web type steel diaphragm 6: general PK type section bondbeam does not establish open web type diaphragm, and only establish very little stiffening rib once in a while, this does not change substantially to the performance of structure.The utility model establishes one open web type steel diaphragm 6 between steel flanged beam steel diaphragm 5, greatly can reduce the calculating of Steel Compression component across footpath, improves the stress performance of steel beam column, thus reduces steel using amount.Certainly, in order to ensure that open web type steel diaphragm 6 can really work, open web type steel diaphragm 6 is highly not less than stiffening rib and crosses 1.67 times of welding hole height.
Owing to have employed such scheme, the utility model has following characteristics:
Concrete slab is two-way slab, improves the stress performance of bridge deck;
Girder web plate spacing is relatively little, reduces steel work consumption;
For ensureing that bridge deck are two-way slab, stringer rigidity is not less than 1/30 of gooseneck rigidity;
Establish one open web type diaphragm between two steel flanged beam diaphragms, and the height of open web type diaphragm is not less than stiffening rib and crosses 1.67 times of welding hole height, improves the stress performance of steel work.
Claims (3)
1. a cable stayed bridge PK type section bondbeam, comprise steel work longeron and steel structure beam, it is characterized in that described steel work longeron comprises girder and stringer, steel structure beam comprises crossbeam, be arranged on the steel flanged beam diaphragm of crossbeam both sides, concrete slab is connected by connecting key and girder and stringer and crossbeam and steel flanged beam steel diaphragm, forms two-way slab.
2. a kind of cable stayed bridge PK type section bondbeam as claimed in claim 1, is characterized in that establishing one open web type diaphragm between twice steel flanged beam diaphragm.
3. a kind of cable stayed bridge PK type section bondbeam as claimed in claim 1, is characterized in that the ratio of the spacing between two adjacent beams and two adjacent steel structural rail is between 0.8 ~ 1.2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320879600.0U CN204238116U (en) | 2013-12-30 | 2013-12-30 | A kind of cable stayed bridge PK type section bondbeam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320879600.0U CN204238116U (en) | 2013-12-30 | 2013-12-30 | A kind of cable stayed bridge PK type section bondbeam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204238116U true CN204238116U (en) | 2015-04-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320879600.0U Expired - Fee Related CN204238116U (en) | 2013-12-30 | 2013-12-30 | A kind of cable stayed bridge PK type section bondbeam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204238116U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105544373A (en) * | 2015-12-07 | 2016-05-04 | 清华大学 | Steel box-concrete composite girder for long-span cable-stayed bridge and construction method |
| CN105803948A (en) * | 2016-05-16 | 2016-07-27 | 中铁大桥科学研究院有限公司 | Platform staggering prevention construction method for PK (Pasco-Kennewick) combined box beam of cable-stayed bridge |
| CN106812058A (en) * | 2017-03-14 | 2017-06-09 | 中铁第四勘察设计院集团有限公司 | A kind of longitudinal rib overhead steel reinforced concrete box hat combination girder stayed-cable bridge |
| CN108103950A (en) * | 2017-12-29 | 2018-06-01 | 南通华凯重工有限公司 | A kind of Combined steel structure highway bridge assembling process |
-
2013
- 2013-12-30 CN CN201320879600.0U patent/CN204238116U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105544373A (en) * | 2015-12-07 | 2016-05-04 | 清华大学 | Steel box-concrete composite girder for long-span cable-stayed bridge and construction method |
| CN105803948A (en) * | 2016-05-16 | 2016-07-27 | 中铁大桥科学研究院有限公司 | Platform staggering prevention construction method for PK (Pasco-Kennewick) combined box beam of cable-stayed bridge |
| CN106812058A (en) * | 2017-03-14 | 2017-06-09 | 中铁第四勘察设计院集团有限公司 | A kind of longitudinal rib overhead steel reinforced concrete box hat combination girder stayed-cable bridge |
| CN106812058B (en) * | 2017-03-14 | 2018-07-03 | 中铁第四勘察设计院集团有限公司 | A kind of longitudinal rib overhead steel-mixed box hat combination girder stayed-cable bridge |
| CN108103950A (en) * | 2017-12-29 | 2018-06-01 | 南通华凯重工有限公司 | A kind of Combined steel structure highway bridge assembling process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150401 Termination date: 20211230 |