Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-turnover steel casing system cast-in-situ bored pile construction method
The invention relates to a high-turnover steel casing system cast-in-situ bored pile construction method which comprises the following steps: assembling a fixed casing and a tool casing; after hanging bars are installed on the circumferential outer walls of the obtained fixed pile casing and the tool pile casing, trial hanging is carried out, so that the bottom end of the tool pile casing is controlled to abut against the top end of the fixed pile casing, and a separated pile casing is obtained; after the separated type pile casing is hoisted to a preset pile position, the separated type pile casing is sunk to a preset height; placing a reinforcement cage and pouring concrete in the separated pile casing in sequence, and controlling the liquid level of the poured concrete to be below the contact surface of the fixed pile casing and the tool pile casing; and after the strength of the to-be-poured concrete reaches the designed strength, the hanging bars are cut off, and the tool pile casing is pulled out. The method not only solves the problems of large one-time investment, low turnover and late recovery of the existing long pile casing process, but also solves the problems of high mounting and dismounting difficulty and long construction time of the existing double-pile casing process, and has the advantages of simplicity and convenience in mounting and dismounting of the steel pile casing, high turnover speed and good sealing performance of a connecting part.
本发明涉及一种高周转钢护筒体系钻孔灌注桩施工方法，其包括以下步骤，拼装固定护筒和工具护筒；在得到的固定护筒和工具护筒的周向外壁上安装吊筋后，试吊，以控制工具护筒的底端抵触于固定护筒的顶端，得到分离式护筒；将分离式护筒吊装于预定桩位后，下沉分离式护筒至预定高度；在分离式护筒内依次安放钢筋笼和灌注混凝土，并控制灌注的混凝土液面在所述固定护筒和工具护筒的抵触面以下；待灌注的混凝土强度达到设计强度后，切除吊筋，拔出工具护筒。本发明不仅解决了现有长护筒工艺一次性投入大、低周转、晚回收的问题，还解决了现有双护筒工艺安拆难度高、施工时间长的问题，具有钢护筒安拆简便、周转快、连接部位密封性好的优点。
High-turnover steel casing system cast-in-situ bored pile construction method
The invention relates to a high-turnover steel casing system cast-in-situ bored pile construction method which comprises the following steps: assembling a fixed casing and a tool casing; after hanging bars are installed on the circumferential outer walls of the obtained fixed pile casing and the tool pile casing, trial hanging is carried out, so that the bottom end of the tool pile casing is controlled to abut against the top end of the fixed pile casing, and a separated pile casing is obtained; after the separated type pile casing is hoisted to a preset pile position, the separated type pile casing is sunk to a preset height; placing a reinforcement cage and pouring concrete in the separated pile casing in sequence, and controlling the liquid level of the poured concrete to be below the contact surface of the fixed pile casing and the tool pile casing; and after the strength of the to-be-poured concrete reaches the designed strength, the hanging bars are cut off, and the tool pile casing is pulled out. The method not only solves the problems of large one-time investment, low turnover and late recovery of the existing long pile casing process, but also solves the problems of high mounting and dismounting difficulty and long construction time of the existing double-pile casing process, and has the advantages of simplicity and convenience in mounting and dismounting of the steel pile casing, high turnover speed and good sealing performance of a connecting part.
本发明涉及一种高周转钢护筒体系钻孔灌注桩施工方法，其包括以下步骤，拼装固定护筒和工具护筒；在得到的固定护筒和工具护筒的周向外壁上安装吊筋后，试吊，以控制工具护筒的底端抵触于固定护筒的顶端，得到分离式护筒；将分离式护筒吊装于预定桩位后，下沉分离式护筒至预定高度；在分离式护筒内依次安放钢筋笼和灌注混凝土，并控制灌注的混凝土液面在所述固定护筒和工具护筒的抵触面以下；待灌注的混凝土强度达到设计强度后，切除吊筋，拔出工具护筒。本发明不仅解决了现有长护筒工艺一次性投入大、低周转、晚回收的问题，还解决了现有双护筒工艺安拆难度高、施工时间长的问题，具有钢护筒安拆简便、周转快、连接部位密封性好的优点。
High-turnover steel casing system cast-in-situ bored pile construction method
一种高周转钢护筒体系钻孔灌注桩施工方法
SHENG YUJING (Autor:in) / YE JINGBIN (Autor:in) / HUANG YUANYUAN (Autor:in) / XU SHENGLIANG (Autor:in) / JIN KAI (Autor:in)
26.03.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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