The development of structural health monitoring (SHM) technology has evolved for over fifteen years in Hong Kong since the implementation of the “Wind And Structural Health Monitoring System (WASHMS)” on the suspension Tsing Ma Bridge in 1997. Five cable-supported bridges in Hong Kong, namely the Tsing Ma (suspension) Bridge, the Kap Shui Mun (cable-stayed) Bridge, the Ting Kau (cable-stayed) B...

The complexities and costs associated with preserving the nation’s bridge infrastructure demand innovative approaches to analysis of data and prediction of future bridge conditions. Several Bridge Management systems (BMS) have come into existence following the ISTEA act of 1991. The policy analysis module of BMS systems developed is restricted to analytical methods. With the availability of mod...

This paper presents a computer aided bridge management system (CADBMS) and its implementation in the context of Papua New Guinea. The expert system includes a bridge management information system database (BMISD) and knowledge based database (KBD) logically linking all bridge parameters to the repair, maintenance and rehabilitation (RMR) options. The KBD is written in Micro-soft Excel with its ...

This paper discusses the minimization of end-to-end delays in a small Bluetooth scatternet with a Slave/Slave bridge. We assume that both piconets operate under exhaustive scheduling policy, that slaves generate packet bursts, that burst arrivals follow Poisson distribution, and that the size of packet bursts follows geometric distribution. Using the theory of queues with vacations, we investig...

Ontario’s Ministry of Transportation (MTO) is responsible for the management of approximately 3000 bridges on the provincial highway network. The MTO in recent years has been evaluating developments in Bridge Management Systems in relation to its own requirements. The Ministry decided to develop an all-new system, similar in network-level functionality to modern systems developed in other count...

This paper discusses the requirements for developing Mobile Model-based Bridge Lifecycle Management Systems (MMBLMSs). These new systems should link all the information about the lifecycle stages of a bridge (e.g., construction, inspection and maintenance) to a 4D model of the bridge incorporating different scales of space and time in order to record events throughout the lifecycle with suitabl...