Research on the Design Scheme for Upgrading the Grade of Expressway Bridge Guardrail
The improvement of the protection level of bridge guardrails can meet the requirements for safe and fast passage of the highway section where they are located. It combines the engineering practice of an expressway bridge concrete guardrail renovation project in Chongqing. The typical structural types of bridge guardrails are analyzed and two renovation schemes,i.e. concrete wall and combination type are proposed and compared in terms of technology,economy and traffic impact. It is recommended to choose the concrete wall type renovation scheme as the recommended scheme. The load-bearing capacity of the renovated guardrail is checked,and the results shows that the total lateral load-bearing capacity of the guardrail meet the requirements,which can ensure that the protection level of the bridge guardrail is raised to SS level.
万方数据
维普
