我国黄土以西北地区最为发育,其面积达63.5万平方公里,素有“西北黄土高原”之称。黄土在地震作用下具有特别敏感的效应,其震害也比别的地区更为严重。我们结合城市地震小区划工作,在黄土场地进行现场和室内的动力特性的测试和实验研究,并利用黄土显微结构对其震害现象做了初步分析。 Loess in China’s most developed northwestern region, with an area of ​​635,000 square kilometers, known as the “Northwest Loess Plateau,” said. Loess has a particularly sensitive effect under the earthquake and its damage is more serious than other regions. Combining with the work of urban seismic zoning, we conducted field and indoor dynamic characteristics tests and experimental studies on loess sites, and made a preliminary analysis of the seismic damage phenomena using loess microstructure.