WIT Press


Evaluation Of Dynamic Connection Designs For Road Safety Barriers

Price

Free (open access)

Paper DOI

10.2495/MC090071

Volume

64

Pages

9

Page Range

71 - 79

Published

2009

Size

1,190 kb

Author(s)

D. A. F. Bayton

Abstract

Bolted road safety barrier connections utilise slotted holes that are perpendicular to the direction of the safety barrier beam. Typically, eight M16 bolts are needed in a lap joint configuration to make each connection. The design of the lap joint connection has remained unchanged for several years. Previous research work has successfully determined the performance characteristics of the bolted connections at quasi-static velocities. Performance improvements at quasi-static velocities have been identified. Therefore, representative test coupons using different design configurations to that of the original test coupon were examined at dynamic velocities. The laboratory test results show that improvements can be made if the current lap joint design were to be changed. Performance improvements such as the amount of energy that the connection was able to absorb and the maximum connection system force were observed. Keywords: safety barrier, crash performance, fastener, connection, dynamic performance.

Keywords

safety barrier, crash performance, fastener, connection, dynamic performance