Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Concrete pipe pile post-grouting structure and construction method
The invention belongs to the technical field of pile foundation construction, and relates to a concrete pipe pile post-grouting structure and a construction method. The concrete pipe pile post-grouting structure comprises a concrete pipe pile body, a grouting channel, a hollow elastic body, a three-way pipe, a one-way valve, a pressure release valve and a lateral grouting structure. Expanded heads with the diameter slightly larger than that of the grouting channel are arranged at the two ends of the concrete pipe pile, the lateral grouting structure is composed of a horizontal grouting head and a connecting pipe, the connecting pipe is tightly attached to the outer wall of the concrete pipe pile body, and the vertical grouting channel and the horizontal grouting channel are connected through a three-way pipe and a pressure release valve. During grouting, pile bottom grouting is firstly carried out, a pile end soil body is compacted, and the pile end bearing capacity is improved; and when the grouting pressure reaches the opening pressure of the pile side pressure release valve, pile side grouting is automatically started, soil around the pile is solidified, and the pile side bearing capacity is improved. According to the method provided by the invention, the ultimate bearing capacity of the concrete pipe pile is improved, meanwhile, the post-grouting process of the pile foundation is simplified, and the method has better economical efficiency and feasibility.
本发明属于桩基施工技术领域，涉及一种混凝土管桩后注浆结构及施工方法。所述混凝土管桩后注浆结构包括混凝土管桩本体、注浆通道、中空弹性体、三通管、单向阀、泄压阀和侧向注浆结构。其中，混凝土管桩两端处存在直径略大于注浆通道的扩大头，侧向注浆结构由水平注浆头和连接管，所述连接管紧贴混凝土管桩本体外壁设置，竖向注浆通道和水平向注浆通道通过三通管和泄压阀连接。注浆时首先进行桩底注浆，压实桩端土体，提高桩端承载力；当注浆压力达到桩侧泄压阀的开启压力后，自动开启桩侧注浆，固化桩周土体，提高桩侧承载力。本发明提供的方法在提高混凝土管桩极限承载力的同时简化了桩基后注浆流程，具有较好的经济型和可实施性。
Concrete pipe pile post-grouting structure and construction method
The invention belongs to the technical field of pile foundation construction, and relates to a concrete pipe pile post-grouting structure and a construction method. The concrete pipe pile post-grouting structure comprises a concrete pipe pile body, a grouting channel, a hollow elastic body, a three-way pipe, a one-way valve, a pressure release valve and a lateral grouting structure. Expanded heads with the diameter slightly larger than that of the grouting channel are arranged at the two ends of the concrete pipe pile, the lateral grouting structure is composed of a horizontal grouting head and a connecting pipe, the connecting pipe is tightly attached to the outer wall of the concrete pipe pile body, and the vertical grouting channel and the horizontal grouting channel are connected through a three-way pipe and a pressure release valve. During grouting, pile bottom grouting is firstly carried out, a pile end soil body is compacted, and the pile end bearing capacity is improved; and when the grouting pressure reaches the opening pressure of the pile side pressure release valve, pile side grouting is automatically started, soil around the pile is solidified, and the pile side bearing capacity is improved. According to the method provided by the invention, the ultimate bearing capacity of the concrete pipe pile is improved, meanwhile, the post-grouting process of the pile foundation is simplified, and the method has better economical efficiency and feasibility.
本发明属于桩基施工技术领域，涉及一种混凝土管桩后注浆结构及施工方法。所述混凝土管桩后注浆结构包括混凝土管桩本体、注浆通道、中空弹性体、三通管、单向阀、泄压阀和侧向注浆结构。其中，混凝土管桩两端处存在直径略大于注浆通道的扩大头，侧向注浆结构由水平注浆头和连接管，所述连接管紧贴混凝土管桩本体外壁设置，竖向注浆通道和水平向注浆通道通过三通管和泄压阀连接。注浆时首先进行桩底注浆，压实桩端土体，提高桩端承载力；当注浆压力达到桩侧泄压阀的开启压力后，自动开启桩侧注浆，固化桩周土体，提高桩侧承载力。本发明提供的方法在提高混凝土管桩极限承载力的同时简化了桩基后注浆流程，具有较好的经济型和可实施性。
Concrete pipe pile post-grouting structure and construction method
一种混凝土管桩后注浆结构及施工方法
GUO ZHENSHAN (Autor:in) / ZHAO ZIYANG (Autor:in) / ZHANG JUN (Autor:in) / GUO LIFEI (Autor:in) / LI CHENGFENG (Autor:in) / LIU JIN (Autor:in) / YUE XIAOPENG (Autor:in) / SU ZHONGMING (Autor:in) / HE XIN (Autor:in) / ZHANG CHUANCHUAN (Autor:in)
13.02.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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