Overhead MSS - A typical construction cycleAfter concreting, curing and tensioning of cables, the Main Girder and the Transverse Trusses are lowered by the main jacks at the rear and fro
Trang 1MOVABLE SCAFFOLDING SYSTEM
Công nghệ thi công
bằng đμ giáo ván khuôn di động
Trang 2Overhead MSS
Underslung MSS
Trang 3Overhead MSS - Components
FRONT & REAR
NOSES
MAIN GIRDER
FORMWORK
TENSION
BARS
Trang 4Overhead MSS - A typical construction cycle
After concreting, curing and tensioning of
cables, the Main Girder and the Transverse
Trusses are lowered by the main jacks at
the rear and front Pier Supports
Trang 5After concreting, curing and tensioning of
cables, the Main Girder and the Transverse
Trusses are lowered by the main jacks at
the rear and front Pier Supports
The Main Girder is now resting on the
launching wagon The Formwork is
disconnected from the Tension Bars
Overhead MSS - A typical construction cycle
Trang 6After concreting, curing and tensioning of
cables, the Main Girder and the Transverse
Trusses are lowered by the main jacks at
the rear and front Pier Supports
The Main Girder is now resting on the
launching wagon The Formwork is
disconnected from the Tension Bars
The Formwork is now lowered and the
MSS is in the launching position
Overhead MSS - A typical construction cycle
Trang 7After concreting, curing and tensioning of
cables, the Main Girder and the Transverse
Trusses are lowered by the main jacks at
the rear and front Pier Supports
The Main Girder is now resting on the
launching wagon The Formwork is
disconnected from the Tension Bars
The Formwork is now lowered and the
MSS is in the launching position
Overhead MSS - A typical construction cycle
Trang 8After concreting, curing and tensioning of
cables, the Main Girder and the Transverse
Trusses are lowered by the main jacks at
the rear and front Pier Supports
The Main Girder is now resting on the
launching wagon The Formwork is
disconnected from the Tension Bars
The Formwork is now lowered and the
MSS is in the launching position
Overhead MSS - A typical construction cycle
Trang 9The MSS is ready for launching The
launching operation to the next concreting
position is to be carried out
NOTE
The first span is usually 0,8 x max span The following
pours will cantilever by 1/5 of the span lengths.
Overhead MSS - A typical construction cycle
Trang 10The MSS is ready for launching The
launching operation to the next concreting
position is to be carried out
Overhead MSS - A typical construction cycle
Trang 12and the MSS is now ready to be raised into
the concreting position
In the next position, the Formwork is
assembled and rigged into place
A Rear Support is rigged in place, and will
provide the lifting of the Main Girder by
means of the two rear hydraulic main
jacks
The Suspension Bars are adjusted,
However, no Pier Support will be available
at the rear end of the Main Girder this time
“0,2 x L” “0,2 x L”
Overhead MSS - A typical construction cycle
Trang 13The MSS is now ready to be lifted into the
concreting position
Overhead MSS - A typical construction cycle
Trang 14The MSS is now ready to be lifted into the
concreting position
Overhead MSS - A typical construction cycle
Trang 15Overhead MSS - Rio Major, Portugal
Trang 16Overhead MSS - Rio Major, Portugal
Trang 17Overhead MSS - Grandola, Portugal
Trang 18Overhead MSS – Bid 374, Taiwan, R.O.C.
Trang 19FRONT & REAR NOSES
Trang 20Underslung MSS - Components
SUSPENSION GALLOWS
The internal Formwork consists of several segments approximately 5 m in length A specially designed trolley is used to carry the segments as well as adjusting the formwork itself in place using hydraulically operated actuators
Trang 21A typical construction cycle with the
underslung MSS:
SUPPORTING BRACKETS
LAUNCHING WAGON
Trang 22A typical construction cycle with the
underslung MSS:
SUPPORTING BRACKETS
LAUNCHING WAGON MAIN GIRDER
Trang 23A typical construction cycle with the
underslung MSS:
SUPPORTING BRACKETS
LAUNCHING WAGON
MAIN GIRDER
TRANSVERSE BEAM SUSPENSION GALLOWS
Trang 24A typical construction cycle with the
underslung MSS:
SUPPORTING BRACKETS
LAUNCHING WAGON
MAIN GIRDER
TRANSVERSE BEAM
SUSPENSION GALLOWS EXTERNAL
FORMWORK
Trang 25A typical construction cycle with the
underslung MSS:
SUPPORTING BRACKETS
LAUNCHING WAGON
MAIN GIRDER
TRANSVERSE BEAM
SUSPENSION GALLOWS
INTERNAL FORMWORK EXTERNAL FORMWORK
Trang 26A typical construction cycle with the
underslung MSS:
SUPPORTING BRACKETS
LAUNCHING WAGON
MAIN GIRDER
TRANSVERSE BEAM
SUSPENSION GALLOWS
INTERNAL FORMWORK EXTERNAL FORMWORK
Trang 27A typical construction cycle with the
underslung MSS:
SUPPORTING BRACKETS
LAUNCHING WAGON
MAIN GIRDER
TRANSVERSE BEAM
SUSPENSION GALLOWS
INTERNAL FORMWORK EXTERNAL FORMWORK
Trang 28A typical construction cycle with the
underslung MSS:
SUPPORTING BRACKETS
LAUNCHING WAGON
MAIN GIRDER
TRANSVERSE BEAM
SUSPENSION GALLOWS
INTERNAL FORMWORK EXTERNAL FORMWORK
Trang 29A typical construction cycle with the
underslung MSS:
SUPPORTING BRACKETS
LAUNCHING WAGON
MAIN GIRDER
TRANSVERSE BEAM
SUSPENSION GALLOWS
INTERNAL FORMWORK EXTERNAL FORMWORK
Trang 30A typical construction cycle with the
underslung MSS:
SUPPORTING BRACKETS
LAUNCHING WAGON
MAIN GIRDER
TRANSVERSE BEAM
SUSPENSION GALLOWS
INTERNAL FORMWORK EXTERNAL FORMWORK
Trang 31A typical construction cycle with the
underslung MSS:
SUPPORTING BRACKETS
LAUNCHING WAGON
MAIN GIRDER
TRANSVERSE BEAM
SUSPENSION GALLOWS
INTERNAL FORMWORK EXTERNAL FORMWORK
Trang 32Underslung MSS – Espinheiros, Portugal
Trang 33Underslung MSS – Bid 374, Taiwan R.O.C.
Trang 34Underslung MSS – Bid 325a, Taiwan, R.O.C.
Trang 35Underslung MSS – E 18, Drammen, Norway
Trang 36Cầu thanh trì
• Phần cầu phía thượng lưu (Lefl), có chiều dài L=3.084m, gồm 54 nhịp, bố trí theo sơ đồ (hướng Thanh Trì - Gia Lâm): 3x33 + 3x33 +28 + 20 + 80+130+80 + 30 +4x50 + 6x50 +80+4x130+80 + 6x50 + 6x50 +5x50 + 80+130+80 + 3x33 + 3x33.
• Phần cầu phía hạ lưu ( Right), có chiều dài L=3.084m, gồm 53 nhịp, bố trí theo sơ đồ (hướng Thanh Trì - Gia Lâm): 3x33 + 3x33 +28 +80+130+80 + 5x50 + 6x50 +80+4x130+ 80+ 6x50 +6x50 +5x50 +80+130+80 + 3x33 + 3x33.
Trang 37CÇu thanh tr×