Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method of deepwater cast-in-place concrete cofferdam
The invention discloses a construction method of a deepwater cast-in-place concrete cofferdam. The method comprises the following steps of building a shortcut to a cofferdam in water by using existing earth and stone materials of a riverbed, and building a construction platform on the outer side of the cofferdam by using existing earth and stone materials of the riverbed; clearing sludge at the cofferdam until a rock stratum at the bottom of the riverbed is exposed, and then roughening the surface of the rock stratum to form a hard irregular rough surface; removing rock debris generated after roughening by utilizing mud suction equipment, then digging out a shortcut, backfilling soil and stone materials to an original place to erect a scaffold steel pipe temporary bridge to the cofferdam, and erecting a form frame at the cofferdam by utilizing steel pipes in a transversely and longitudinally staggered mode; erecting a form on the form frame, and then binding steel bars underwater at the cofferdam; pouring concrete at the cofferdam till the concrete is exposed out of the water surface by 50 cm; and after the concrete is solidified to meet the strength requirement, discharging water in the cofferdam, and dismantling the form frame. According to the construction method, the construction cost is low, the construction difficulty is low, and soil and stone materials are saved in a construction process; and the concrete cofferdam subjected to pouring through the method is good in water insulation effect.
本发明公开了一种深水现浇混凝土围堰的施工方法，利用河床既有的土石材料修砌便道至水中围堰处，并在围堰处的外侧利用河床既有的土石材料修砌施工平台；清理围堰处的淤泥至裸露出河床底部的岩层，然后在岩层表面拉毛使其形成坚硬的不规则毛面；利用吸泥设备清除拉毛后产生的岩石碎屑，然后挖除便道并将土石材料回填至原处搭设脚手钢管便桥至围堰处，并在围堰处利用钢管搭设横纵交错的模板架；在模板架上支模，然后在围堰处水下绑扎钢筋；在围堰处浇筑混凝土至露出水面50cm；混凝土凝固达到强度要求后，排出围堰内的水并拆除模板架。本发明的施工方法施工成本低、施工难度低，施工过程中节约土石材料，用本方法浇筑的混凝土围堰隔水效果好。
Construction method of deepwater cast-in-place concrete cofferdam
The invention discloses a construction method of a deepwater cast-in-place concrete cofferdam. The method comprises the following steps of building a shortcut to a cofferdam in water by using existing earth and stone materials of a riverbed, and building a construction platform on the outer side of the cofferdam by using existing earth and stone materials of the riverbed; clearing sludge at the cofferdam until a rock stratum at the bottom of the riverbed is exposed, and then roughening the surface of the rock stratum to form a hard irregular rough surface; removing rock debris generated after roughening by utilizing mud suction equipment, then digging out a shortcut, backfilling soil and stone materials to an original place to erect a scaffold steel pipe temporary bridge to the cofferdam, and erecting a form frame at the cofferdam by utilizing steel pipes in a transversely and longitudinally staggered mode; erecting a form on the form frame, and then binding steel bars underwater at the cofferdam; pouring concrete at the cofferdam till the concrete is exposed out of the water surface by 50 cm; and after the concrete is solidified to meet the strength requirement, discharging water in the cofferdam, and dismantling the form frame. According to the construction method, the construction cost is low, the construction difficulty is low, and soil and stone materials are saved in a construction process; and the concrete cofferdam subjected to pouring through the method is good in water insulation effect.
本发明公开了一种深水现浇混凝土围堰的施工方法，利用河床既有的土石材料修砌便道至水中围堰处，并在围堰处的外侧利用河床既有的土石材料修砌施工平台；清理围堰处的淤泥至裸露出河床底部的岩层，然后在岩层表面拉毛使其形成坚硬的不规则毛面；利用吸泥设备清除拉毛后产生的岩石碎屑，然后挖除便道并将土石材料回填至原处搭设脚手钢管便桥至围堰处，并在围堰处利用钢管搭设横纵交错的模板架；在模板架上支模，然后在围堰处水下绑扎钢筋；在围堰处浇筑混凝土至露出水面50cm；混凝土凝固达到强度要求后，排出围堰内的水并拆除模板架。本发明的施工方法施工成本低、施工难度低，施工过程中节约土石材料，用本方法浇筑的混凝土围堰隔水效果好。
Construction method of deepwater cast-in-place concrete cofferdam
一种深水现浇混凝土围堰的施工方法
HE YONG (Autor:in) / ZHANG KEYUAN (Autor:in) / XUE LINJING (Autor:in) / HUO DONGCUN (Autor:in) / CHEN WEIYING (Autor:in) / HAO DONGDONG (Autor:in) / DENG RUIHANG (Autor:in)
18.05.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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