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论述了西安地裂缝的空间分布规律和活动特点,并对地裂缝给西安市市政基础设施特别是城市立交带来的灾害进行了系统分析。以长安路立交、互助路立交、绕城高速长安南路立交的现场调查资料为依据,分析了地裂缝对城市立交的破坏模式。认为其结构的主要破坏模式为水平张拉和垂直错动。另外对穿越地裂缝的城市立交的减灾措施以及对拟建工程进行地裂缝专项勘察和采取的结构措施等方面进行了探讨。
The spatial distribution and activity characteristics of ground fissures in Xi’an are discussed. The disasters caused by ground fissures in Xi’an municipal infrastructure, especially the urban interchange, are systematically analyzed. Based on the investigation data of Chang’an Road Interchange, Huzhu Road Interchange and Ring Expressway Chang’an South Road Interchange, the damage modes of ground fissure to the city interchange were analyzed. The main failure modes of the structure are the horizontal tension and the vertical displacement. In addition, the paper also discusses the disaster mitigation measures of urban interchange across the ground fissures and the special investigation of ground fissures and the structural measures adopted in the proposed project.