地铁施工质量缺陷与质量通病防治处理方案

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1、地铁施工质量缺陷与质量通病防治处理方案目录一、工程概况.................................................................1二、地下连续墙...............................................................12.1导墙和便道的质量通病及对策...........................................12.2成槽施工过程中的质量通病及对策.......................................22.3砼灌注的施工质量通

2、病及对策...........................................32.4墙体及支护结构变形...................................................4三、钻孔灌注桩...............................................................53.1偏孔.................................................................53.2缩孔（孔径小于设计孔径).........................

3、.....................53.3钢筋笼上浮...........................................................63.4断桩.................................................................6四、土方开挖及回填...........................................................74.1挖方边坡塌方.......................................................

4、..74.2土方出现橡皮土.......................................................84.3基坑回填土下沉.......................................................8五、混凝土结构工程...........................................................95.1混凝土强度等级不符合设计要求........................................105.2构件断面尺寸偏差，轴线的尺寸不符合设计要求.......

5、...................105.3蜂窝、麻面、露筋、孔洞..............................................115.4结构表面缺棱、掉角或结构发生裂缝....................................125.5混凝土构件断裂......................................................125.6混凝土质量缺陷的处理................................................13六、防水工程...................

6、.............................................136.1通病及形成..........................................................136.2预治措施及处置......................................................13七、模板支架工程............................................................157.1通病及形成...................................

7、.......................157.2预治措施及处置......................................................15八、钢筋工程................................................................168.1通病形成分析........................................................168.2防治措