摘要
针对高等级公路扩建工程中的关键技术问题,结合工程实际选取了代表性断面,对加宽路基性状的变形规律进行了对比研究。表明旧路经过长期使用之后,固结基本完成,新旧路基下浅层地基土的工程性质存在明显的差异。旧路基下地基经荷载作用后,各项物理力学指标较新加宽部分地基均有不同程度提高,尤其是压缩性和强度指标均比新路基下地基高,深层地基变化规律不明显。
Aiming at critical technical issues in extension engineering of high - type highway, in the light ofengineering reality to select representative section, the paper makes research on deformation law of widened sub-grade charater. Results indicate after service in long term the used road has been basically consolidated. Engineering natures of soil of lower thin layer of new and used subgrade, after load action, its all physical mechanics indetesare increased in varying degree by contrast to new widened part of foundation, especially compressibility andstrengthes indexes are high over the new subgrade＇s lower foundation, but varying law of deep layer foundation is not evident.
出处
《北方交通》
2009年第8期12-14,共3页
Northern Communications
关键词
公路
路基加宽
变形特性
路基
Highway
Subgrade widening
Characteristics of deformation
Subgrade
