不同湿度状态下土基回弹模量的研究  

Study on Soil-based Rebound Modulus under Different Humidity Conditions

作　　者：徐伟 钱治杭 XU Wei;QIAN Zhihang

机构地区：[1]中恒工程设计研究院有限公司,四川成都610000

出　　处：《城市道桥与防洪》2020年第6期236-238,M0024,共4页Urban Roads Bridges & Flood Control

摘　　要：首先介绍了土基回弹模量对道路的重要作用,梳理了不同规范对设计土基回弹模量的要求,针对规范对不同条件下确定的标准回弹模量、不利季节的回弹模量、平衡湿度回弹模量数值上的要求对道路路基设计的影响,对不同平衡湿度下的回弹模量值和不利季节下的回弹模量值之间的关系进行了对比,研究影响土基回弹模量因素,确定如何提高土基回弹模量的方法。通过对现有资料的查阅和实际工程的调查情况,总结了成都地区道路填料类型对应能达到的回弹模值,以供在道路路基路面设计中判断和取用。The importation role of soil-based rebound modulus on road is introduced.The requirements of different norms on the rebound modulus of the designed soil base are sorted out.Aiming at the influence of the requirements of the norms on the design of road subgrade on the standard rebound modulus determined under the different conditions,the rebound modulus in an adverse season and the rebound modulus of equilibrium humidity,the relationship between the rebound modulus under the different equilibrium humidity and the rebound modulus in an adverse season is compared.The factors affecting the rebound modulus of soil base are studied.The method how to improve the rebound modulus of soil base is determined.According to the available information and the practical engineering survey,the rebound modulus corresponding to the type of road filler in the area of Chengdu is summarized in order to judge and take in the design of road subgrade and pavement.

关 键 词：回弹模量 平衡湿度 不利季节 弯沉值 

分 类 号：TU4[建筑科学—土工工程]