Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method of river-crossing diversion and support integrated steel sheet pile foundation pit cofferdam
The invention discloses a construction method of a river-crossing diversion and support integrated steel sheet pile foundation pit cofferdam, which belongs to the technical field of foundation pit cofferdam construction and comprises the steps of construction preparation, steel sheet pile construction, bracket welding, steel pipe hoisting, transverse steel sheet pile welding, bracket support prestress application, cofferdam treatment in irregular areas around steel pipes and cofferdam monitoring. According to the method, a mode of integrating diversion and supporting of the foundation pit by adopting a spheroidal graphite cast steel pipe (hereinafter referred to as a water guide steel pipe) is adopted, the spheroidal graphite cast steel pipe is adopted as a water guide material, and bracket supports are welded at positions below two sides of the water guide steel pipe and are used for replacing affected steel supports to carry out supporting stress, so that integration of water guide and supporting is achieved; as for irregular arc-shaped positions between the steel pipes, cement paste is adopted for blocking and seepage prevention, and seepage prevention can be effectively achieved by utilizing the conditions that the cement paste has fluidity before hardening and is high in strength, good in integrity and good in seepage resistance after hardening.
本发明公开了跨河道导流支撑一体化钢板桩基坑围堰施工方法，属于基坑围堰施工技术领域，包括施工准备、钢板桩施工、牛腿焊接、钢管吊装、横向钢板桩焊接、牛腿支撑施加预应力、钢管周边不规则区域围堰处理和围堰监测；本发明，采用球墨铸钢管(以下简称导水钢管)进行基坑导流+支撑一体化的方式，采用球墨铸铁管作为导水材料，在导水钢管两侧下方的位置焊接牛腿支撑，用于替代受影响的钢支撑进行支撑受力，由此达到导水+支撑一体化，对于钢管之间的弧形不规则位置，采用水泥浆进行封堵防渗，利用水泥浆硬化前具有流动性，硬化后强度高、整体性好、抗渗性好的条件，可以有效地防渗。
Construction method of river-crossing diversion and support integrated steel sheet pile foundation pit cofferdam
The invention discloses a construction method of a river-crossing diversion and support integrated steel sheet pile foundation pit cofferdam, which belongs to the technical field of foundation pit cofferdam construction and comprises the steps of construction preparation, steel sheet pile construction, bracket welding, steel pipe hoisting, transverse steel sheet pile welding, bracket support prestress application, cofferdam treatment in irregular areas around steel pipes and cofferdam monitoring. According to the method, a mode of integrating diversion and supporting of the foundation pit by adopting a spheroidal graphite cast steel pipe (hereinafter referred to as a water guide steel pipe) is adopted, the spheroidal graphite cast steel pipe is adopted as a water guide material, and bracket supports are welded at positions below two sides of the water guide steel pipe and are used for replacing affected steel supports to carry out supporting stress, so that integration of water guide and supporting is achieved; as for irregular arc-shaped positions between the steel pipes, cement paste is adopted for blocking and seepage prevention, and seepage prevention can be effectively achieved by utilizing the conditions that the cement paste has fluidity before hardening and is high in strength, good in integrity and good in seepage resistance after hardening.
本发明公开了跨河道导流支撑一体化钢板桩基坑围堰施工方法，属于基坑围堰施工技术领域，包括施工准备、钢板桩施工、牛腿焊接、钢管吊装、横向钢板桩焊接、牛腿支撑施加预应力、钢管周边不规则区域围堰处理和围堰监测；本发明，采用球墨铸钢管(以下简称导水钢管)进行基坑导流+支撑一体化的方式，采用球墨铸铁管作为导水材料，在导水钢管两侧下方的位置焊接牛腿支撑，用于替代受影响的钢支撑进行支撑受力，由此达到导水+支撑一体化，对于钢管之间的弧形不规则位置，采用水泥浆进行封堵防渗，利用水泥浆硬化前具有流动性，硬化后强度高、整体性好、抗渗性好的条件，可以有效地防渗。
Construction method of river-crossing diversion and support integrated steel sheet pile foundation pit cofferdam
跨河道导流支撑一体化钢板桩基坑围堰施工方法
ZHANG XINYU (Autor:in) / LI CHAOCHEN (Autor:in) / KOSHO (Autor:in) / WAN BING (Autor:in) / WANG JUE (Autor:in) / DENG YI (Autor:in)
29.11.2024
Patent
Elektronische Ressource
Chinesisch
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