CAJ | 학술논문

探讨西南地区软土路基经塑料排水板方式处理后，路基侧向变形的规律。基于四川省遂-资高速公路软土路基沉降变形监测的数据，对土体侧向变形随深度、侧向变形随时间的变化规律进行统计分析，并根据其变化特征，分别提出相应的预测模型。研究表明：（1）在路堤填筑过程中侧向水平位移近地表处（0.15～0.3倍软基厚度）侧向位移变化剧烈；（2）侧向水平位移随时间存在3种变化关系：填筑前期为Δym＝ΔSD，路堤填筑从临界填筑高度到设计填筑高度的过程为Δym＝0.15ΔSD，填筑完成后为Δym＝0.3ΔSD。最大侧向水平位移随时间大致呈“S”形曲线分布；（3）根据侧向水平位移随深度变化特点、侧向水平位移随时间变化特点，分别提出y（z）＝ae-λz（bsinλz＋ccosλz）、y（t）＝a/（1＋e（b-c·t·r））模型进行预测，预测结果与实测数据较为吻合。
탐토서남지구연토로기경소료배수판방식처리후，로기측향변형적규률。기우사천성수-자고속공로연토로기침강변형감측적수거，대토체측향변형수심도、측향변형수시간적변화규률진행통계분석，병근거기변화특정，분별제출상응적예측모형。연구표명：（1）재로제전축과정중측향수평위이근지표처（0.15～0.3배연기후도）측향위이변화극렬；（2）측향수평위이수시간존재3충변화관계：전축전기위Δym＝ΔSD，로제전축종림계전축고도도설계전축고도적과정위Δym＝0.15ΔSD，전축완성후위Δym＝0.3ΔSD。최대측향수평위이수시간대치정“S”형곡선분포；（3）근거측향수평위이수심도변화특점、측향수평위이수시간변화특점，분별제출y（z）＝ae-λz（bsinλz＋ccosλz）、y（t）＝a/（1＋e（b-c·t·r））모형진행예측，예측결과여실측수거교위문합。
This paper decides the discipline of soft soil subgrade lateral deformation after the approach of plastic drainage plate in the southwest area.Based on the project of expressway from Suining to Ziyang in Sichuan Province,we sort out the typical observation data of monitoring sections deformation.We analyze the variation law of lateral deformation from the angle of time and depth.Meanwhile we propose the forecasting model according to the characteristic of deformation.The results indicate that the following.(1 )During the process of filling,the lateral deformation near the ground surface alters violently.(2)The lateral deformation distributes three variation laws:during the filling stage,the relationship between the lateral deformation and time isΔym=ΔSD.The height from the critical filling to the design process,the relationship is Δym=0.15ΔSD.In the consolidation stage,it is Δym=0.3ΔSD.The maximum lateral deformation is distributed as S-shape with time.The maximum deformation position does not change.(3)We propose and predicte the y(z)=ae-λz(bsinλz+ccosλz)、y(t)=a/(1 +e(b-c·t·r))curve according to the variation law of lateral horizontal deformation from the angle of depth and time.The result indicates that the predicted life matches the real data.