Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method of lock catch steel pipe pile cofferdam bearing platform
The invention discloses a construction method of a lock catch steel pipe pile cofferdam bearing platform, and relates to the technical field of cofferdam construction. The construction method comprises the steps that landfill of an artificial island is carried out firstly, underwater operation is avoided, the construction difficulty is reduced, CO type lock catch steel pipe piles are buckled, inserted, driven and folded to form a cofferdam, after part of the CO type lock catch steel pipe piles are anchored to riverbed bedrock, in order to prevent water seepage at the bottoms of the CO type lock catch steel pipe piles, grouting and leaking stoppage are carried out, after it is ensured that water leakage does not occur or water is effectively stopped, a foundation pit is excavated, the inner supporting layers are installed, the multiple inner supporting layers are connected into the cofferdam to form a stable inner supporting stress structure, and the situations that water seepage caused by deformation of the CO type lock catch steel pipe piles due to uneven stress and the bearing platform cannot be poured are prevented. The problems that a cofferdam bearing platform water retaining structure is not firm and water cannot be effectively stopped are effectively solved, the construction period is shortened, the construction progress is accelerated, and the construction project cost is further reduced; and meanwhile, the lock catch steel pipe pile cofferdam bearing platform can be suitable for geological environments with sudden bedrock change and large adjacent rock surface change height difference.
本发明公开了一种锁扣钢管桩围堰承台施工方法，涉及围堰施工技术领域，先进行人工岛的填埋，避免水下作业，降低施工难度，通过CO型锁扣钢管桩的相互扣合、插打、合拢成围堰，将部分CO型锁扣钢管桩锚固在河床基岩后，为防止CO型锁扣钢管桩底部渗水做注浆堵漏，确保不会漏水或有效止水后，进行基坑的挖掘，边进行内支撑层的安装，若干个内支撑层连接在围堰内部形成稳定的内支撑受力结构，防止CO型锁扣钢管桩因受力不均变形而导致水渗入，无法进行承台的浇筑。有效的解决了围堰承台挡水结构不结实以及无法有效止水的问题，加快了施工周期和进度，进一步的降低了施工工程造价，同时还能适用基岩突变、相邻岩面变化高差大的地质环境。
Construction method of lock catch steel pipe pile cofferdam bearing platform
The invention discloses a construction method of a lock catch steel pipe pile cofferdam bearing platform, and relates to the technical field of cofferdam construction. The construction method comprises the steps that landfill of an artificial island is carried out firstly, underwater operation is avoided, the construction difficulty is reduced, CO type lock catch steel pipe piles are buckled, inserted, driven and folded to form a cofferdam, after part of the CO type lock catch steel pipe piles are anchored to riverbed bedrock, in order to prevent water seepage at the bottoms of the CO type lock catch steel pipe piles, grouting and leaking stoppage are carried out, after it is ensured that water leakage does not occur or water is effectively stopped, a foundation pit is excavated, the inner supporting layers are installed, the multiple inner supporting layers are connected into the cofferdam to form a stable inner supporting stress structure, and the situations that water seepage caused by deformation of the CO type lock catch steel pipe piles due to uneven stress and the bearing platform cannot be poured are prevented. The problems that a cofferdam bearing platform water retaining structure is not firm and water cannot be effectively stopped are effectively solved, the construction period is shortened, the construction progress is accelerated, and the construction project cost is further reduced; and meanwhile, the lock catch steel pipe pile cofferdam bearing platform can be suitable for geological environments with sudden bedrock change and large adjacent rock surface change height difference.
本发明公开了一种锁扣钢管桩围堰承台施工方法，涉及围堰施工技术领域，先进行人工岛的填埋，避免水下作业，降低施工难度，通过CO型锁扣钢管桩的相互扣合、插打、合拢成围堰，将部分CO型锁扣钢管桩锚固在河床基岩后，为防止CO型锁扣钢管桩底部渗水做注浆堵漏，确保不会漏水或有效止水后，进行基坑的挖掘，边进行内支撑层的安装，若干个内支撑层连接在围堰内部形成稳定的内支撑受力结构，防止CO型锁扣钢管桩因受力不均变形而导致水渗入，无法进行承台的浇筑。有效的解决了围堰承台挡水结构不结实以及无法有效止水的问题，加快了施工周期和进度，进一步的降低了施工工程造价，同时还能适用基岩突变、相邻岩面变化高差大的地质环境。
Construction method of lock catch steel pipe pile cofferdam bearing platform
一种锁扣钢管桩围堰承台施工方法
LIAO YUNZHAO (Autor:in) / ZHOU WEN (Autor:in) / KE SONGLIN (Autor:in) / HE ZELIN (Autor:in) / ZHENG ZHEN (Autor:in) / XIE GUANGYU (Autor:in) / ZHANG QIQIAO (Autor:in) / ZHANG YINGHONG (Autor:in) / WANG JIE (Autor:in) / WANG GUIYU (Autor:in)
27.04.2021
Patent
Elektronische Ressource
Chinesisch
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