A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Portable Concrete Traffic Barrier for Maintenance Operations
The objective of this project is to develop and test a portable barrier system for high-speed applications that can be easily transported and erected by Texas Department of Transportation (TxDOT) maintenance forces using readily available equipment such as a front-end loader. Consideration was given to factors such as segment length, segment weight, connection method, barrier constructability, and dynamic barrier deflection. A deflection constraint of 3 ft was imposed by the project panel. Based on the results of the testing and evaluation reported herein, the new precast, cross-bolt, F-shape concrete traffic barrier with 10-ft barrier segments is considered suitable for implementation on high-speed roadways. The cross-bolt connection system adapted for use in the new barrier helps limit dynamic deflection during an impact. When subjected to a crash test with an impact severity 15 percent greater than currently required in NCHRP Report 350, the barrier deflected only 27 inches. This is the lowest deflection of any free-standing, portable concrete barrier approved to NCHRP Report 350 requirements other than TxDOTs X-bolt barrier with 30-ft segments. The low deflection and ease of placement and repair make the barrier well suited for maintenance and work zone operations.
Portable Concrete Traffic Barrier for Maintenance Operations
The objective of this project is to develop and test a portable barrier system for high-speed applications that can be easily transported and erected by Texas Department of Transportation (TxDOT) maintenance forces using readily available equipment such as a front-end loader. Consideration was given to factors such as segment length, segment weight, connection method, barrier constructability, and dynamic barrier deflection. A deflection constraint of 3 ft was imposed by the project panel. Based on the results of the testing and evaluation reported herein, the new precast, cross-bolt, F-shape concrete traffic barrier with 10-ft barrier segments is considered suitable for implementation on high-speed roadways. The cross-bolt connection system adapted for use in the new barrier helps limit dynamic deflection during an impact. When subjected to a crash test with an impact severity 15 percent greater than currently required in NCHRP Report 350, the barrier deflected only 27 inches. This is the lowest deflection of any free-standing, portable concrete barrier approved to NCHRP Report 350 requirements other than TxDOTs X-bolt barrier with 30-ft segments. The low deflection and ease of placement and repair make the barrier well suited for maintenance and work zone operations.
Portable Concrete Traffic Barrier for Maintenance Operations
R. P. Bligh (author) / N. M. Sheikh (author) / W. L. Menges (author) / R. R. Haug (author)
2005
74 pages
Report
No indication
English
Portable Concrete Barrier Connectors
| NTIS | 1987
Low-Deflection Portable Concrete Barrier
| British Library Online Contents | 2006