西安古城墙是全国重点文物保护单位,也是中国现存最完整的一座古代城垣建筑.近年来墙体裂缝增多,严重影响了城墙的整体性能,急需专业处理进行维护.通过对城墙21号马面裂缝的现状监测,具体分析了其破坏因素与破坏机理,针对存在的问题提出了钢管灌注桩与灰土挤密桩施工的加固方法,阻止了裂缝的扩展,最大限度地保持城墙原有风貌,对类似古建筑的保护有一定的借鉴意义.%Xi'an ancient city wall is a national key cultural relics protection units and most completely preserved ancient city wall of building in China .In recent years ,the increase of wall cracks has seriously affected the whole performance of the wall ,therefore professional maintenance is needed .The maintenance and reinforcement method of factors is given based on analyzing its present situation and damage mechanism .The reinforcement method of steel pipe piles and sand piles in order to stop the development of cracks and preserve most of its original architecture cultural style ,which can provide reference to the ancient building's protection .
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