6月17日,由水电四局施工的渝广高速公路彭家湾中桥1号桥台28号人工挖孔桩混凝土灌注正式开盘。
为了保证桩基灌注的顺利进行,在持续2天40摄氏度的高温下,渝广高速公路项目部各职能部门配合作业队,完成了钢筋笼的吊装入孔、孔内水流速度的测定、灌注导管的试拼装、导管水密性试验等准备工作,确定了该桩基混凝土浇筑工艺为水下灌注。17日,由质量控制办牵头,在各部门的鼎力配合下,经监理单位、试验单位验收合格后,于13时30分第一辆拉运混凝土的罐车缓缓驶入指定灌注平台,开始了桩基混凝土的水下灌注作业。
为了保证桩基的灌注质量,首批混凝土的灌注方量根据配料单严格控制,确保混凝土灌注质量完全满足混凝土设计要求,15时45分28号桩基灌注顺利收盘,标志着人工挖孔桩灌注施工全面展开。
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