农村公路路基全寿命周期沉降分析及防治措施

Analysis and Prevention Measures for Full-Life-Cycle Settlement of Rural Highway Roadbed

摘要:

为揭示农村公路路基全寿命周期内沉降的核心原理，优化适配农村公路的低成本、易操作防治措施，以 A 市快速路为参考样本，聚焦路基设计、施工、运营全寿命周期，分析沉降病害的具体表现与次生危害，提炼针对性处治技术与全寿命周期防治措施，并结合农村公路实际情况进行适配调整。明确路基沉降主要表现为反射路面深度裂纹、边坡滑移型沉降和大面积持续沉降3类，会引发结构安全风险与养护成本激增等问题，针对不同沉降类型形成了适配农村公路的低成本处治方案。提出的设计阶段轻量化勘察与参数优化、施工阶段质量管控及运营阶段简易养护观测等措施，可有效降低农村公路路基沉降风险，为乡村振兴提供可靠交通保障。

Abstract:

To reveal the core principles of settlement of rural highway roadbeds within full life cycle and optimize the low-cost easy-to-operate prevention measures suitable for rural highways，taking the expressway in City A as a reference sample，and focusing on the full life cycle of roadbed design，construction and operation，the specific manifestations and secondary hazards of settlement diseases are analyzed，and the targeted treatment technologies and full-life-cycle prevention measures are refined and adjusted according to the actual conditions of rural highways. It is clarified that the roadbed settlement mainly manifests in three types of deep cracks reflected on the pavement，slope sliding settlement and large-area continuous settlement，which can lead to structural safety risks and a sharp increase in maintenance costs. Low-cost treatment schemes suitable for rural highways have been developed for different types of settlement. The proposed measures including lightweight geological investigation and parameter optimization in the design stage，quality control in the construction stage，and simple maintenance and observation in the operation stage can effectively reduce the risk of rural highway roadbed settlement and provide the reliable transportation support for rural revitalization.