基于振动成型的级配碎石路用性能及设计标准  

Pavement Performance and Design Standard of Graded Broken Stone Based on Vibration Molding

作　　者：周卫峰[1] 李彦伟 张秀丽[1] 马骉[3] 

机构地区：[1]天津市市政工程研究院,天津300074 [2]石家庄交通局,河北石家庄050051 [3]长安大学特殊地区公路工程教育部重点实验室,陕西西安710064

出　　处：《重庆交通大学学报（自然科学版）》2009年第3期559-564,共6页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：交通部西部交通建设科技项目(200631800009)

摘　　要：采用不同成型方式,研究对比了级配碎石的物理力学特性。提出了基于振动成型的级配碎石设计指标及设计标准,并应用实体工程进行验证。研究结果表明,提出的振动成型方式与现场碾压方式更为匹配,与重型击实相比,振动法设计的级配碎石最大干密度系统有所提高;CBR、抗变形能力等力学指标明显优于重型击实法设计的级配碎石。实体工程表明,振动成型设计的级配碎石为基层的复合式路面路表弯沉与半刚性基层路表弯沉相当;不需特殊设备,采用改进的施工工艺,现场含水量、级配及压实度均能够达到研究提出的振动成型设计标准。In order to make full use of the advantage of the graded broken stone and improve the road performance of graded broken stone, different molding ways are used to analyze the physical and mechanical properties of graded broken stone. The design specifications and design standards of graded broken stone which are based on vibration molding are proposed, and their feasibility is verified through practical project. The results indicate that the vibration molding matches much better with the working way of roller. Comparing with the heavy compaction way, the maximum dry density designed by vibration way is improved remarkably; the mechanical indexes of graded broken stone got by the vibration molding, including CBR, the anti-deformation ability and so on, are much better. Practical engineering shows that： the deflection of composite pavement with graded broken stone base is equivalent to the deflection of semi-rigid pavement. Without the special equipments, the on-site water content, gradation and compaction degree can meet the standards of vibration design method through the application of the improved construction technology.

关 键 词：道路工程 级配碎石 振动成型 设计标准 路用性能 

分 类 号：U416.03[交通运输工程—道路与铁道工程]