场地地震液化是平原地区在经历一次强烈地震作用之后所引起的最显著的震害形式之一。地震液化通常伴随产生地面大规模的喷水冒砂、震陷、地裂及滑移等地面变形,造成各种工程建筑、道路、农田及水利设施的严重毁坏,给国计民生带来重大损失。唐山地处冀东滨海平原,地势低平,平原上广泛盖覆着第四纪晚期未经固结的松软沉积;加上唐山地区是一个构造活动地带,孕震机制异常活跃,因此,平原的 Site liquefaction is one of the most significant forms of earthquake damage caused by a strong earthquake in the plains. Earthquake liquefaction is usually accompanied by large-scale surface sand blasting, earthquake collapse, ground fissure and slip and other ground deformation, resulting in a variety of engineering buildings, roads, farmland and water conservancy facilities, serious damage to the people’s livelihood, a significant loss. Tangshan is located in the coastal plain of Jidong, low terrain, the plains are widely covered with late Quaternary unconsolidated soft deposits; coupled with the Tangshan area is a tectonic activity zone, abnormal seismogenic mechanism active, therefore, plain