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如何避免线槽处墙面开裂？ - 工程施工 - 项目管理 - 氿上知道
返回顶部
②沉管：在振动沉管过程中，不得有偏心，并随时检查预制钢筋混凝土桩尖有无破损，桩管有无偏移或倾斜，若有上述情况应立即纠正。桩管内不允许进入水或泥浆，当有水或泥浆进入时，应灌入1.5m高的封底混凝土后再开始沉桩。
③灌注混凝土：每次向管桩内灌注混凝土时应尽量多灌，用长桩管打短桩时，混凝土可一次灌足；打长桩时第一次灌入桩管的混凝土应尽量灌满。第一次拨管高度应控制在能容纳第二次所需要灌入的混凝土量为限，不宜拨得太高。在拨管过程中应设专人用测锤检查管内混凝土面得下降情况。