山西建筑
山西建築
산서건축
SHANXI ARCHITECTURE
2012年
16期
139-140
,共2页
路基拼宽%垂直位移%水平位移%新老路基
路基拼寬%垂直位移%水平位移%新老路基
로기병관%수직위이%수평위이%신로로기
road widening%vertical displacement%horizontal displacement%new and old subgrade
基于有限元法,对路基拼宽后新老路基的相互作用进行了分析,结果表明：新路基的垂直、水平位移均大于旧路基的垂直、水平位移,导致在结合处出现纵向裂缝;新路基土体的弹性模量越大,垂直位移越小;新路基土体的重度越大,垂直位移越大;路基拼宽时,应选用变形模量大、重度小的土体作为路基拼宽的填料。
基于有限元法,對路基拼寬後新老路基的相互作用進行瞭分析,結果錶明：新路基的垂直、水平位移均大于舊路基的垂直、水平位移,導緻在結閤處齣現縱嚮裂縫;新路基土體的彈性模量越大,垂直位移越小;新路基土體的重度越大,垂直位移越大;路基拼寬時,應選用變形模量大、重度小的土體作為路基拼寬的填料。
기우유한원법,대로기병관후신로로기적상호작용진행료분석,결과표명：신로기적수직、수평위이균대우구로기적수직、수평위이,도치재결합처출현종향렬봉;신로기토체적탄성모량월대,수직위이월소;신로기토체적중도월대,수직위이월대;로기병관시,응선용변형모량대、중도소적토체작위로기병관적전료。
Based on the finite element method of numerical simulation,the interaction between new and old subgrade is studied in road windening.It is found that the vertical and horizontal displacement of new subgrade are lager than those of the old subgrade,which results in the longitudinal crack along the road.The more large deformation modulus of soil in the new subgrade is,the more small vertical displacement is.The more large density is,the more large vertical displacement is.It is more reasonable to fill the widening subgrade with the soil which is large modulus and small density in road widening engineering.
