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长期改扩建关键技术研究,提高了昌樟高速服务水平

作者:金沙js55555官网科技评价中心 发布时间:2018/5/17 下午5:16:04 查看次数:4633

2018413日,江西省交通运输厅、金沙js55555官网在南昌主持召开了江西省交通运输厅科技项目高速公路改扩建工程路基修筑关键技术研究旧沥青路面承载能力评价与改建路面耐久性结构设计方法研究验收暨评价会,两项成果均依托于江西昌樟高速公路改扩建工程。

 “高速公路改扩建工程路基修筑关键技术研究”项目由江西赣粤高速公路股份有限公司和长沙理工大学共同完成,该项目提出了以路基拓宽施工期老路表面沉降和路基拓宽后新老路基工后差异沉降为指标的拓宽路基非均匀沉降控制方法及标准;提出了基于路表标高和路表沉降速率的老路地基固结度评价技术,建立了拓宽路堤下地基沉降变形预估方法;提出了基于基于改扩建路基基质吸力的路基回弹模量预估模型和综合考虑加载次数和湿度状态等因素的拓宽路基永久变形计算方法;提出了老路基处治深度确定方法和对应的老路基松散台阶液压强夯及重型压实处治技术。

 “旧沥青路面承载能力评价与改建路面耐久性结构设计方法研究”项目由江西赣粤高速公路股份有限公司和同济大学共同完成,该项目建立了基于FWD的沥青路面多层结构模量反演新方法,并提出了以基层模量比为损伤指标的半刚性基层损坏状况评价方法与标准;提出了以延长乳化沥青常温再生混合料疲劳寿命为目标的路面结构层碾压新工艺;提出了一种基于改建沥青路面结构与材料一体化设计的新型耐久性面层结构设计方法;研发了稳定型橡胶沥青评价方法和橡胶沥青混合料设计方法。

    两个项目研究成果在江西昌樟高速公路改扩建工程中成功应用,并在国内多条高速公路改扩建工程中得到推广,相关研究成果纳入了行业规范,社会、经济和环境效益显著,推广应用前景广阔。

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