摘要
安县晓坝镇处于"5.12"汶川大地震极重灾区,受灾严重,不具备重建条件,需选址重建。在野外详细调查的基础上,通过现场勘查和室内试验,深入研究了晓坝镇灾后新建场址的主要岩土工程问题。研究表明,新建场址主要土层为粉质粘土和淤泥质土,属高压缩性软弱土;地下水埋深浅,对基础施工和地基土承载力影响大;建筑场地类别Ⅱ类,属抗震不利地段。提出了深层水泥土搅拌法和换填地基两种软基处理方案,以及加强地基基础抗震设计等措施。
Xiaoba Town of Anxian County, almost totally destroyed in the Wenchuan earthquake, did not have the reconstruction conditions and need to site redevelop. In order to study reconstruction-related geotechnieal problems in heavy quake-hit areas, taking Xiaoba town as an example, we studied the main geotechnical problems of its new site based on detailed field survey and laboratory test. The results show that the main reconstruction-related geotechnical problems of this site are as follows： bad physical and me- chanical properties of ground soils; shallow groundwater level; and unfavorable seismic site. Focusing on those problems, we present two methods, namely deep mixing method and replacement of ground soil method, to treat the soft ground, and suggest strengthening seismic design of subsoil-foundation.
出处
《西南科技大学学报》
CAS
2010年第2期26-31,共6页
Journal of Southwest University of Science and Technology
基金
973计划项目(2008CB425803)
中科院知识创新工程项目(KZCX2-YW-Q03-5)
关键词
地震
岩土工程
软土地基
地基处理
安县晓坝镇
Earthquake
Geotechnical engineering
Soft soil foundation
Ground treatment
Xiaoba Town of Anxian County
