soil grades meaning in English
土壤粒度
Examples
- In this paper , a series of surveys on road condition , pavement - performance and destroy reason are analyzed , soil property , hydrologic regime are combined , modulus of resilience are confirmed on heavy compaction test , foundation classification in area of qinhuangdao is divided into 3 grades and highway is divided into 3 districts according to the principle that different soil grades produce the same effect on thickness of base course or bottom course , classification of traffic is divided into 4 grades after observation materials of traffic volumes are collected extensively , traffic characters and parameters are analyzed
本课题在对现有路面结构状况和使用状况进行调查，并对路面使用性能和破坏原因进行分析的基础上，结合秦皇岛地区的土质、水文条件，确定重型击实标准条件下土基回弹模量值，依据不同等级土基对路面基层或底基层的厚度产生大致相同效应的原则，将秦皇岛地区地基强度等级划分为三级并将本地区公路分成三个区。在广泛收集交通量及组成的观测资料，了解交通特性，进行交通参数分析后将交通量等级划分为四级。 - The sensitivity analysis of design parameter of subgrade and pavement are used to confirmed the degree of impact on working state with change of the design parameter , it is the rational and economy that the range of design parameter are proposed . structure combination design is used to proposed basic structure of qinhuangdao ' s asphalt pavement in view of local natural environment , build material , traffic classification and soil grades . this paper puts forwards suiting 39 kinds of typical structure of qinhuangdao ' s asphalt pavement according to the actual structure , experimental section long - term observation , extensive surveys , structure theory ' s analysis and calculation
在公路等级、交通量等级、土基等级及路面材料参数研究的基础上进行路基路面设计参数敏感性分析，用以确定设计参数的变化对路基路面工作状态的影响程度，并据此给出了经济合理的路基路面设计参数范围；结合本地自然环境、筑路材料、交通状况及土质情况进行路面结构组合设计，提出了适宜于秦皇岛地区公路沥青路面的基本结构；最后根据实际路面结构、试验路的长期观测、大量调查与路面结构理论分析计算相结合，提出并推荐适合秦皇岛地区的39种沥青路面典型结构，这是本课题的主要宗旨，其研究成果将直接指导设计人员的工作，并避免随意性和盲目性，对加快秦皇岛地区公路交通事业的发展将具有十分重要的意义，对其他地区也有一定的指导意义。