摘要
随着我国经济建设飞速发展,我国的市政建设经常会遇到地下存在含软土土洞、泥沙层、填埋垃圾及飘石等地下异质体问题,在实际工程应用中,天然异质体的形状是各式各样,不规则的,如天然的地下溶洞、填埋垃圾及漂石等。但绝大多数异质体是人为活动所造成,如地下修建污水管道,电缆及地下室等,其形状大致可看作矩形和圆形,不同形状的异质体,对表面波场的影响也不相同。基于波场快照云图在不同形状异质体周围的传播特征以及不同形状异质体的偏移距-波长谱图能量变化。结果表面:矩形空洞对瑞利波的反射较大,而圆形空洞相较于矩形空洞对瑞利波的反射相当小。根据波场快照云图传播特征及谱密度强弱的变化,可以识别异质体的形状。
With the rapid development of China's economic construction,China's municipal construction often meets the problem of underground heterogeneity,such as soft soil caves,sediment layers,landfills and floating stones.In practical engineering applications,the shapes of natural heterogeneity are various and irregular,such as natural underground karst caves,landfills and boulders.However,the vast majority of heterogeneity is caused by human activities,such as the construction of underground sewage pipes,cables and basements.Their shapes can be roughly seen as rectangular and circular.Different shapes of heterogeneity have different effects on the surface wave field.Based on the propagation characteristics of wave field snapshot cloud images around different shapes of heterostructures and the offset wavelength spectrum energy changes of different shapes of heterostructures.The results show that the reflection of Rayleigh waves from rectangular cavities is larger than that from circular cavities.According to the propagation characteristics of wave field snapshot cloud image and the change of spectral density,the shape of heterogeneous body can be identified.
作者
盛文翔
郑祥
刘圣奎
柴华友
SHENG Wen-xiang;ZHENG Xiang;LIU Sheng-kui;CHAI Hua-you(School of Civil Engineering and Architecture,Wuhan University of Engineering,Wuhan 430073,China)
出处
《价值工程》
2023年第2期149-151,共3页
Value Engineering
基金
武汉工程大学第十三届研究生教育创新基金资助项目课题:层状介质浅部异质体表面波探测方法研究(CX2021136)。
关键词
市政建设
瑞利波
空洞异质体
异质体形状
谱变化
municipal construction
rayleigh wave
cavity heterogeneity
heterogeneity shape
spectral variation
