subgrade conditions 中文意思是什麼
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And also about the objective conditions for developing is given to the well consolidation technology with sand - packs in soft foundation treatment area and the consolidation technology with cement - mixed piles in transitional section of road and bridge areas, and the detailed introduction is also given about workmanship for filling works in subgrade body, for filling works in transitional sections of the subgrade, and for construction of base bed of the subgrade. in each part caution items in the construction and the relevant technical issues are summarized
然後著重介紹了秦沈客運專線一般軟土地段地基處理袋裝砂井加固技術、路橋過渡段水泥攪拌樁加固技術，並對路基本體填築施工工藝、路基過渡段填築施工工藝，路基基床施工工藝也進行了詳細的介紹，在每一部分中對施工注意事項及有關技術問題進行了總結歸納。 -
2. the complex stiffness corresponding to three bearing conditions of semi - infinite elastic subgrade, finite elastic soil layer and end bearing at the pile bottom are theoretically investigated, and analytical expression of the complex stiffness corresponding to finite elastic soil layer bearing condition is obtained. the special influence of bearing conditions on dynamic response at pile head is then discussed
2 、對剛性支承、有限厚度土層支承和半無限空間支承三種樁底部支承情況下樁底支承復剛度和樁周土底分佈支承復剛度的解析表達及其特性進行了推導論證，通過假定樁底土為與樁等截面的土柱推導求得有限厚土層支承條件下樁底支承復剛度的解析解，並據此分析了不同底部支承邊界對樁頂響應的影響。 -
On the basis of the loess distribution, engineering geology and specific properties of road use in gansu province, this paper divides traffic volume grade according to the conditions of transportation of all high - grade highways which are being built and have already finished. besides, it analyses the relativity of three different test methods, establishes the related relations, and divides their strength grade after measuring rebound module of subgrade of the representative high - grade highways in gansu loess area. furthermore, it recommends the common semi - rigid and asphalt concrete design parameters by comparing the experiment in doors to outdoors, and draws up the optimized design program aga - lq based on advanced genetic algorithm and solves the non - liner optimization design model of asphalt pavement construction by computer
本文基於甘肅黃土分佈、工程地質及路用特性研究，對該黃土地區在建和已建的全部高等級公路交通狀況進行了詳細調查和分析，劃分了交通量等級；對甘肅黃土地區代表性的高等級公路，利用三種不同方法實測了土基回彈模量，分析了各測試方法的相關性，建立了相關關系，對土基回彈模量進行了強度等級劃分；通過室內外試驗比較，推薦了常用的半剛性材料和瀝青混凝土設計參數值；利用計算機編制了基於改進遺傳演算法的優化設計程序aga ? lq ，並成功求解了瀝青路面結構非線性優化設計模型；最後經計算提出了甘肅黃土地區高等級公路瀝青路面典型結構，並編制了查詢圖庫軟體cx ? lq ，供設計單位直接選用，科學簡便地解決了甘肅黃土地區的路面設計問題。
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