高速公路拓寬中路基填筑及新老路基交接處理技術(shù)應(yīng)用

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摘 要： 首先探討了路基填筑中，填筑材料選擇、填筑厚度控制及層間壓實(shí)度對路基穩(wěn)定性的影響。接著，詳細(xì)分析了新老路基銜接部位差異沉降的控制方法和實(shí)踐應(yīng)用，如換填法、拋石擠淤法和排水固結(jié)法等。此外，還討論了支擋結(jié)構(gòu)的設(shè)計(jì)與作用，特別是在高填挖區(qū)域的應(yīng)用，以及老路基邊坡的治理策略和實(shí)施方法。

關(guān)鍵詞： 路基填筑 新老路基交接 差異沉降控制 支擋結(jié)構(gòu)

中圖分類號： TU753文獻(xiàn)標(biāo)識碼： A文章編號： 1679-3567（2024）02-0018-04

Application of Treatment Technology of Roadbed Filling and Intersection of New and Old Roadbed in Highway Widening

ZHU Hua

（ Jiangsu Dianhang Construction Engineering Co.， Ltd.， Taizhou， Jiangsu Province， 225500 China ）

Abstract： The article first explores the influence of filling material selection， filling thickness control， and interlayer compaction on the stability of roadbed in roadbed filling. Subsequently， a detailed analysis was conducted on the control methods for differential settlement at the junction of new and old subgrades， such as the replacement method and rock filling methods， riprap and siltation methods， and drainage consolidation methods， as well as their applications in practical engineering. In addition， the article also discusses the design and function of retaining structures， especially their application in high fill and excavation areas， as well as the treatment strategies and implementation methods of old roadbed slopes.

Key Words： Roadbed filling； Intersection of new and old roadbed； Differential settlement control； Retaining structure

隨著時(shí)間的推移和車輛增加，我國現(xiàn)有高速公路面臨著服務(wù)能力下降的問題。（剩余4534字）