Vehicle Crash Tests of a Movable Concrete Barrier

摘要

A movable concrete barrier (MCB) has been developed to address the need for a positive barrier for separating traffic in a reversible lane. Crash tests were conducted to qualify the MCB for highway use. Demonstrations of a transfer vehicle to move the MCB were also performed and evaluated. The test barrier was designed and built by Barrier Systems. Incorporated, based on an Australian patent. Six crash tests were conducted using two barrier cross sections and two types of hinge connections between barrier segments. Two unsuccessful tests on the first type of barrier led to cross section and hinge connection modifications. The new, more heavily reinforced MCB and hinge connection performed well through the four tests. It was concluded that the crash tests satisfied the requirements for structural adequacy and occupant risk and partially satisfied the vehicle trajectory requirements of NCHRP Report 230. Transfer vehicle demonstrations included moving the MCB one full-lane width, straightening a deflected barrier, and transporting, assembling and transferring the MCB on a 1400-foot (427 m) radius curve with 12% cross slope and on a 5% longitudinal grade.