城市核心区现役高架桥防撞护栏更新工艺实践与思考

Practice&Reflection on the Renewal Technology of Collision Prevention Guardrail for Active Viaduct in Urban Core Area

经过近30 a运营,现状城市核心区高架桥防撞护栏已无法满足当前设施服务功能的需求。以上海内环高架某年轻化工程为例,从桥梁防撞护栏更新工艺的角度,探讨城市核心区高架桥更新改造思路。简要介绍了2种防撞护栏的更新工艺的主要流程与特点。工程实践表明,所述工艺可在“交通无感、周边居民无感”的条件下完成现状防撞护栏更新。

After nearly 30 years of operation,the anti-collision guardrails of the elevated bridges in the current urban core area are no longer able to meet the current demand for facility service functions.Taking a rejuvenation project of the Shanghai Inner-Ring Elevated Bridge as an example,it explores the ideas for the renovation of elevated bridges in the urban core area from the perspective of the renewal process of bridge anti-collision guardrails.It briefly introduces the main processes&characteristics of the renewal process for two types of anti-collision guardrails.Engineering practice has shown that the described process can complete the update of the current anti-collision guardrail under the condition of no sense of traffic&no sense of surrounding residents.