高韧超薄沥青磨耗层在港珠澳大桥珠海人工岛通道上的应用  

High-toughness, ultra-thin friction course for the channel on the Zhuhai artificial island of the Hong Kong-Zhuhai-Macao Bridge

作　　者：虞将苗 陈富达 彭馨彦[2] 刘国华 邓科[4] 余贤书 张文锋 莫广亮 卢学 陈镇文 徐天尧 李俊华 YU Jiangmiao;CHEN Fuda;PENG Xinyan;LIU Guohua;DENG Ke;YU Xianshu;ZHANG Wenfeng;MO Guangliang;LU Xue;CHEN Zhenwen;XU Tianrao;LI Junhua(School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510640,China;Guangzhou Municipal Engineering Maintenance Department,Guangzhou 510030,China;Zhuhai Gree Hong Kong-Zhuhai-Macao Bridge Zhuhai Port Construction Management Co.,Ltd.,Zhuhai 519000,China;CCCC Highway Consultants Co.,Ltd.,Beijing 100088,China;China Fortune Connection(Canton)Roadway Technology Co.,Ltd.,Foshan 528300,China)

机构地区：[1]华南理工大学土木与交通学院,广州510640 [2]广州市市政工程维修处,广州510030 [3]珠海格力港珠澳大桥珠海口岸建设管理有限公司,珠海519000 [4]中交公路规划设计院有限公司,北京100088 [5]华运通达(广东)道路科技有限公司,佛山528300

出　　处：《清华大学学报（自然科学版）》2020年第1期48-56,共9页Journal of Tsinghua University(Science and Technology)

基　　金：国家自然科学基金面上项目(51678251);中央高校基本科研业务费成果转化培育项目(2018KZ001)

摘　　要：为对港珠澳大桥珠海人工岛通道(原施工便桥)桥面铺装层进行品质化提升并延长桥面系服役寿命,采用了高韧超薄沥青磨耗层对其进行整体罩面。实施过程中,结合桥梁恒载受限、作业时间紧等特点,在铺装层材料与配比设计、桥面修复材料选择与工艺、水泥桥面与铺装层界面处置技术、施工质量精细化管理与控制等方面进行了系统的试验研究和现场实施方案设计。设计的基于同步摊铺工艺的高韧超薄沥青磨耗层具有实施厚度薄、铺装性能强、压实功需求小、施工效率高等技术特点。经现场测试,罩面前后的桥面铺装在构造深度(提升0.34 mm)、摩擦系数(提升15.5 BPN)、降噪性能(降低噪音3~6 dB)与平整度(由6.5 mm提升至1.4 mm)上得到了明显改善,且其密水性能(<30 mL/min)和拉拔强度(>0.7 MPa)良好。相关的成套技术体系可进一步推广为各类公路、城市道路、桥梁和隧道结构的表面磨耗层方案。This paper describes a high-toughness, ultra-thin friction course developed to improve the pavement quality and extend the service life of the channel(originally a temporary bridge) for the artificial island in the Hong Kong-Zhuhai-Macao Bridge. The effects of extra loads and the extended operating period on the bridge were investigated experimentally for various binding materials, gradation designs, repair plans for the bridge deck, various bonding interface treatment, and construction quality management techniques. The results show that the high-toughness, ultra-thin friction course coupled with synchronous paving provides thinner pavement thicknesses, much higher mechanical strength, less compaction requirement, and higher construction efficiency. The texture depth(increased by 0.34 mm), friction coefficient(increased by 15.5 BPN), noise(reduced by 3~6 dB), and flatness(improved from 6.5 mm to 1.4 mm) were significantly better than for the original cement concrete bridge pavement. The water sealing ability(<30 mL/min) and the debonding strength(>0.7 MPa) reached a good condition. This paving system can also be applied upgrade highway, urban road, bridge, and tunnel surfaces.

关 键 词：高韧 超薄磨耗层 同步摊铺 界面粘结 

分 类 号：U41[交通运输工程—道路与铁道工程]