西北水电Issue(2)：1-6,6.DOI:10.3969/j.issn.1006-2610.2024.02.001
基于正交试验法的旧水泥路面共振碎石化参数优化研究
Study on Optimization of Resonant Rubblization Parameters of Old Cement Pavement based on Orthogonal Experimental Method
摘要
Abstract
Resonant rubblization is a new technology introduced in the reconstruction and upgrading of old cement pavement to ensure pavement quality and solve engineering problems such as reflective cracks.Its crushing effect is closely related to technical parameters.In order to optimize the parame-ters of resonant rubblization of old cement pavement,based on the reconstruction project of S436 Xunchang to Yuhe Secondary Highway in Sichuan,the basic principles and parameter issues of resonant rubblization are introduced,and based on the orthogonal analysis method and multi-parameters optimi-zation theory,select key parameters such as the lateral net distance of the hammer trace,travel speed,hammer head vibration frequency,etc.,and conduct in-situ resonance crushing tests under different factors and status combinations.Parameter optimization of resonant rubblizing technology is car-ried out through on-site test pit evaluation,indoor particle classification test and qualified scoring method.The results show that the particle size grada-tion curve of the old cement pavement after resonant rubblization has good continuity,but the rubblizing effect differs significantly under different fac-tors;the crushing effect score decreases first with the increase of the lateral net distance of the hammer trace and the resonance frequency and then in-creases,and with the increase of traveling speed,the crushing effect score first increases and then decreases;the resonance frequency is the main con-trolling parameter of the crushing effect,followed by the influence of the lateral distance of the hammer trace,and the influence of the traveling speed is the minimum.Hence,the optimal parameter combination for the resonant rubblization of old cement pavement is proposed which can provide techni-cal reference for the reconstruction of old cement highways in southwest of China.关键词
路面改造/共振碎石化/正交试验法/参数优化/效果评价Key words
pavement reconstruction/resonant rubblization/orthogonal test method/parameter optimization/effect evaluation分类
交通工程引用本文复制引用
李国梁,胡伟锋,张代江,周成宇..基于正交试验法的旧水泥路面共振碎石化参数优化研究[J].西北水电,2024,(2):1-6,6.基金项目
国家重点研发计划(2018YFC0808702) （2018YFC0808702）
陕西省重点研发计划(2016TZC-S-3-1) （2016TZC-S-3-1）
中交基础设施养护集团有限公司科技研发项目(RP2022002726). （RP2022002726）
