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桥梁钢板桩围堰施工方法及要点

字号:T|T
作者:人气:-发表时间:2019-04-11 16:01:50

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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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此文关键字:钢板桩围堰