CA2177087A1 - Structures Prestressed by Buoyancy - Google Patents
Structures Prestressed by BuoyancyInfo
- Publication number
- CA2177087A1 CA2177087A1 CA 2177087 CA2177087A CA2177087A1 CA 2177087 A1 CA2177087 A1 CA 2177087A1 CA 2177087 CA2177087 CA 2177087 CA 2177087 A CA2177087 A CA 2177087A CA 2177087 A1 CA2177087 A1 CA 2177087A1
- Authority
- CA
- Canada
- Prior art keywords
- buoyancy
- bridge
- superstructure
- water
- counter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D15/00—Movable or portable bridges; Floating bridges
- E01D15/14—Floating bridges, e.g. pontoon bridges
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Foundations (AREA)
Abstract
This invention comprises the use of the force of buoyancy to counter the gravity forces due to the dead and live loads imposed on bridge structures spanning bodies of water.
This is achieved by securing to the underside of the bottom chord or element of the bridge superstructure, restrained at each end from vertical movement, a buoyancy block or a plurality of buoyancy blocks submerged at all levels of the body of water, thus providing the desired prestress to the superstructure to counter the gravity loads.
Further, in a trussed type of superstructure, buoyancy collars may be secured to the vertical elements of the truss, providing additional prestressing forces when the body of water rises and a resistance to the deflection of the bridge structure from the live loads, thus reducing the shearing forces, bending moments, and reactions at the two ends or abutments of the bridge.
This is achieved by securing to the underside of the bottom chord or element of the bridge superstructure, restrained at each end from vertical movement, a buoyancy block or a plurality of buoyancy blocks submerged at all levels of the body of water, thus providing the desired prestress to the superstructure to counter the gravity loads.
Further, in a trussed type of superstructure, buoyancy collars may be secured to the vertical elements of the truss, providing additional prestressing forces when the body of water rises and a resistance to the deflection of the bridge structure from the live loads, thus reducing the shearing forces, bending moments, and reactions at the two ends or abutments of the bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2177087 CA2177087C (en) | 1996-05-22 | 1996-05-22 | Structures prestressed by buoyancy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2177087 CA2177087C (en) | 1996-05-22 | 1996-05-22 | Structures prestressed by buoyancy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2177087A1 true CA2177087A1 (en) | 1997-11-23 |
| CA2177087C CA2177087C (en) | 2000-04-25 |
Family
ID=4158240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2177087 Expired - Fee Related CA2177087C (en) | 1996-05-22 | 1996-05-22 | Structures prestressed by buoyancy |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2177087C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110184895A (en) * | 2019-07-01 | 2019-08-30 | 沈阳建筑大学 | It is a kind of can be with the bridge and its construction method of river level rise automatic height adjustment |
| CN112281847A (en) * | 2020-11-03 | 2021-01-29 | 浙江省围海建设集团股份有限公司 | Mould bag concrete construction system and method |
| CN112663477A (en) * | 2020-12-18 | 2021-04-16 | 保利长大工程有限公司 | Big net empty heavy load liftable navigation hole landing stage in typhoon high-rise district |
-
1996
- 1996-05-22 CA CA 2177087 patent/CA2177087C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110184895A (en) * | 2019-07-01 | 2019-08-30 | 沈阳建筑大学 | It is a kind of can be with the bridge and its construction method of river level rise automatic height adjustment |
| CN110184895B (en) * | 2019-07-01 | 2023-10-27 | 沈阳建筑大学 | Bridge capable of automatically adjusting height along with rising of river water level and construction method thereof |
| CN112281847A (en) * | 2020-11-03 | 2021-01-29 | 浙江省围海建设集团股份有限公司 | Mould bag concrete construction system and method |
| CN112663477A (en) * | 2020-12-18 | 2021-04-16 | 保利长大工程有限公司 | Big net empty heavy load liftable navigation hole landing stage in typhoon high-rise district |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2177087C (en) | 2000-04-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |