详情

Calibration of Bridge Element Based Deterioration Models

项目名称：	Calibration of Bridge Element Based Deterioration Models
摘要：	While Texas has consistently ranked among the top two states in terms of overall bridge conditions, the majority of the funding (Category 6) earmarked for bridge preservation activities (Highway Bridge Program) have historically been allocated to projects using a �worst first� strategy, in which bridges in the poorest condition are prioritized for replacement highest under the HBP. For the last few years, the overall network bridge condition, expressed in terms of the performance measure �percent of bridges in good or better condition� has entered a plateau period, with no significant change in the percent of bridges in good or better condition. This new period of flat performance, coupled with the enormous size of the Texas bridge inventory and exacerbated by the uneven age distribution of Texas bridges, indicates it is time for TxDOT to employ a more refined approach to bridge preservation activities, one that goes beyond a �worst first� mentality and instead, strives to find the optimum mix of preservation treatments which will result in a network where bridge conditions are managed over the long-term, incorporating life cycle planning activities into the process. In order to implement a life cycle planning methodology at the network level for Texas bridges, the first crucial step will be development of deterioration models for Texas bridges. The desired output of this project is a set of deterioration models for groupings or families of bridges, taking into account NBI condition data, geospatial location, amount of truck traffic, and other relevant variables which may be revealed when analyzing the data, which will predict the probability of a bridge transitioning from one condition state to another due to deterioration over a specified time period.
状态：	Active
资金：	$253363
资助组织：	Texas Department of Transportation
项目负责人：	Jensen, Darrin
执行机构：	University of Texas at San Antonio
主要研究人员：	Weissmann, Jose
开始时间：	20180901
预计完成日期：	20200831
实际结束时间：	0