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施工期间,市民可及时通过交通部门的微博微信、导航软件及室外信息屏等手段,了解施工情况及交通疏导、绕行信息,请广大市民尽量绕行周边道路,当行驶至施工区域服从管理人员指挥,减速慢行,确保安全。
揭秘
根据不同路段“定制”沥青
此次东三环大修基于“全寿命”设计理念,根据既有路面调查结果,综合分析病害原因,有针对地施工,也就是说,不像以往的“一刀切”式施工方式。
具体来说,公交专用道、公交站台及出入口采用高温稳定性能更优的抗车辙沥青混合料,其他车道采用高节能低排放的温拌改性沥青混合料;局部基础薄弱路段采用另外一种抗高负荷使用的沥青,使路面在耐用性上达成一致效果。
沿线桥梁防撞墩首次用上钢丝网
北京市城市道路养护管理中心介绍,本次大修首次对沿线桥梁的防撞墩迎撞面采用外挂2.5mm直径的钢丝绳网片,再通过锚喷高性能砂浆进行加固。
这一新措施能够增加钢筋保护层厚度,提高防撞墩的耐久性,有效解决北京地区桥梁防撞墩钢筋保护层不足及混凝土松散劣化严重等问题;在进行防撞墩表面拆除时,采用高压水射流技术,在彻底清除松散混凝土的同时,减少扬尘,提高施工效率。
针对桥梁伸缩缝装置保护带混凝土反复出现破损开裂的现象,将拓宽保护带宽度,并首次在大修中使用具有结构强度高、高温稳定性、低温抗裂性的材料,增加行车舒适性。
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