建筑弃土在道路工程中资源化利用关键技术

Key Technologies of Resourced Utilization for Construction Waste Soil in Road Projects

摘要:

通过调研分析、理论计算、室内试验和工程应用等手段，形成软弱地基就地加固、弃土改良处理后作为道路路基或场地填料的成套设计、施工技术，解决城建项目中高含水量工程弃土难以利用、资源化推广困难的技术瓶颈，实现工程弃土就地综合利用、单个或多个项目土方平衡“零废弃”，同时结合宁波西洪大桥试验段实施验证和跟踪观测情况，提出软土地区就地加固软弱地基及废弃淤泥质土（泥浆）固化后用于路基填料的技术和成套工艺，对软土地区弃土资源化利用、实现土方平衡具有广泛的推广价值。

Abstract:

Through research, analysis, theoretical calculations, laboratory tests and engineering applications, a complete set of design and construction techniques is formed for local reinforcement of weak foundation and treatment of abandoned soil as road subgrade or site filler. The technical bottleneck is broken by solving the difficulties in both of the utilization of abandoned high water-containing soil from urban construction projects and resourse promotion. Both of the on-site comprehensive utilization of abandoned soil and the "zero waste" balance of earthwork of single or multiple projects are achieved. Meanwhile, after combination with the implementation verification and tracking observation of the test section of Xihong Bridge in Ningbo, the technology and complete process are proposed for subgrade filling after solidifying soft foundation and waste silt soil(mud) in soft soil area. This research has the extensive popularization value for the utilization of abandoned soil and earthwork balance in soft soil areas.