摘要
通过湿陷性黄土地基强夯处理原位测试试验,对强夯引起的湿陷性黄土物理力学特性、密实度、湿陷性、比贯入阻力和承载力变化等扰动特性进行了系统的研究,并划分了不同的扰动区域;同时对强夯所引起周围建筑物的环境公害进行了分析。在实测统计资料基础上,提出了不利扰动影响系数,该扰动影响系数不仅考虑了振动的基本特征,而且考虑了包括建筑物刚度、强度、高度、基础情况以及隔振措施等综合影响因素,其结果可作为强夯振动的扰动评价依据。
Disturbance of collapsible loess due to dynamic consolidation was studied combining with runway foundation of collapsible loess improvement engineering of Zhongchuan Airport in Lanzhou City. The study of the change of physico-mechanical properties of loess before and after dynamic consolidation, characteristic of loess disturbed due to dynamic consolidation by means of in-situ tests such as static cone penetration, dynamic penetration, load test was carried out. The geo-environmental damage due to dynamic consolidation disturbance was analyzed. The influencing coefficient of vibration disturbance due to dynamic consolidation was put forward. The coefficient can be used to evaluate the disturbance degree for buildings due to dynamic consolidation, which includes maximum horizontal acceleration, speed, amplitude on land as well as integrative factors of buildings such as the rigidity, strength, height, situation of foundation and vibration isolation measures.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2004年第12期1903-1909,共7页
Rock and Soil Mechanics
基金
国家自然科学重点基金项目资助(No.59738160)。
关键词
强夯
扰动
湿陷性黄土
环境公害
原位试验
Consolidation
Engineering geology
Foundations
Mechanical properties
Vibrations (mechanical)
