應用研究 2025年 第卷 第18期

DOI: 10.7672 / sgjs2025180092

山區高速公路超高填方路基監測及路面鋪筑時間推測研究

范利民1,張武橋2,方鴻2,譚偉2

作者簡介：

范利民，高級工程師，E-mail: 17373199052@ 163. com

作者單位：

1.中交第三公路工程局有限公司，湖北武漢 430030;2.湖南省交通科學研究院有限公司，湖南長沙 410114

基金項目：

?湖南省交通科技項目（202238）；中交三公局科技創新項目（ 3GS-GX-0699-2022-0002）

摘要：

為了研究山區高速公路超高填方路基沉降變形特征，依托湖南某高速公路超高填方路基工程，制訂了針對超高填方路基的監測方案并開展了監測工作，最后對路基坡面位移和沉降量進行分析。基于路基實測沉降數據，采用指數曲線法預測后期沉降曲線，并根據沉降預測曲線推測了路面鋪筑時間。結果表明：路基累積位移量<4mm的測點數占總數的 54.17%,只有少部分測點位移較大，坡面整體位移較小；路基各測點存在一定沉降，但整體變化趨勢基本一致，最終沉降量逐漸趨于平緩，表明路基沉降穩定；采用指數曲線法可較好地擬合沉降數據并預測后期沉降趨勢，可作為路面鋪筑時間確定的初步依據。

English：

In order to study the settlement and deformation characteristics of super-high fill subgrade ofexpressway in mountainous area, this paper relies on the super-high fill subgrade project of a expresswayin Hunan Province, formulates the monitoring scheme for super-high fill subgrade and carries out themonitoring work. Finally, the displacement and settlement of subgrade slope are analyzed. Based on themeasured settlement data of subgrade, the exponential curve is used to predict the later settlement curve,and the pavement paving time is inferred according to the settlement prediction curve. The results showthat the number of measuring points with cumulative displacement less than 4mm accounts for 54.17% ofthe total, only a few measuring points have large displacement and the overall displacement of the slope issmall. There is a certain settlement at each measuring point of the subgrade, but the overall change trendis basically same, and the final settlement gradually tends to be gentle, indicating that the subgradesettlement is stable ; The exponential curve can better fit the settlement data and predict the latersettlement trend,which can be used as a preliminary basis for the determination of pavement pavingtime.