摘要
在强风和加固的综合作用下,珊瑚砂中浅基础的抗风可靠性是动态变化的,以强风出现频率服从泊松过程为基础,计算了考虑多次强风造成损伤的基础抗风可靠度随时间的变化规律。结果表明,在基础使用一定时间后,对地基进行加固是必要的;并做了多次加固基础抗风可靠性影响分析,提出了自然状态、强风和加固综合作用下基础抗风可靠度的计算方法,为基础加固时机的选择提供了依据。
Due to the combined action of strong wind and reinforcement, the wind resistance reliability of foundation is dynamic. Assuming that the frequency of strong wind obeys to Poisson process, the variation of wind resistance relia- bility of shallow foundation under damage caused by several strong winds was calculated. The results demonstrate the ne- cessity of foundation reinforcement after using a period of time. According to analysis of impact of several reinforcements on foundation, a computing method is proposed to calculate foundation＇s wind resistance reliability index under the combined action of natural state, strong wind and reinforcement. The method can provide evidence for choice of the timing of foundation reinforcement.
出处
《水电能源科学》
北大核心
2014年第7期113-115,共3页
Water Resources and Power
关键词
珊瑚砂
浅基础
抗风可靠性
损伤
coral sand
shallow foundation
wind resistance reliability
damage
