快乐3分彩

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1、施工流程如下：　钻孔桩施工→钢板桩打桩→水下混凝土湿封→基坑抽水→树立承台模板→浇注承台混凝土。
2、施工的准备工作在 进行钢板桩围堰施工作业时，必须先做好施工准备工作，主要包括复查钢板桩，检查振动锤及处理钢板桩等。可采用DZ-60Y型振动桩锤及15吨吊车作 业，为保证工程能顺利进行，在打桩之前对振动锤进行了一系列作业测试，结果表明该振动捶功能正常，为剔除那些因装卸运输而导致磨损的变形钢板桩，在钢板桩 拼组之前对钢板桩进行了详细的检查，并对锁口破裂及表面有焊接残瘤的钢板桩进行处理，保证单独的围堰钢板桩具有相同的锁口，并在锁口内涂抹适量黄油以减少 钢板桩之间的摩损。

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5、混凝土封底采用吸泥机清理基础基底(潜水抽沙泵钢板桩清基视频)，采用20cm厚混凝土进行封底，封底混凝土是自流平混凝土，坍落度控制为22cm左右，在首次灌注时，必须保证其满足计算量，由于混凝土的流动半径较大，故本工程布设了多个测点，对厚度不足的混凝土处及时进行补灌，确保了承台基坑的平整度。

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