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在我国,如需对2006年以前修建的高速公路进行改扩建,则原有的护栏必将不满足现行规范的防护要求,部分改扩建项目中将其进行再利用升级改造成分离式双层双波护栏使其能够达到现行规范。而这种分离式结构的改造方案需要加密立柱操作,不仅增加了工程量还对施工工期造成影响。本文在此基础之上提出了不需要加密立柱的叠加式双层双波护栏改造方案,通过计算机仿真模拟手段分析其安全防护性能,与分离式双层双波护栏相比其具有用钢量低、施工便利等特点。
In our country, if it is necessary to reconstruct the expressway built before 2006, the existing guardrail will not meet the protection requirements of the current norms. Some of the reconstruction and expansion projects will be reused and upgraded to be separated double decker double Wave fence to enable it to meet the current norms. And this kind of separation structure transformation scheme needs the encryption post operation, not only increased the project quantity but also has the influence to the construction time. Based on this, this paper proposes a modified double-layer double-layer guardrail that does not require encrypted columns, and analyzes its safety performance by computer simulation. Compared with the double-layer guardrail, , Construction convenience and so on.