A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Foundation structure of post-jacking grouting expanded-head pile
The invention discloses a rear jacking grouting expanded head pile foundation structure, which belongs to the technical field of pile foundations and comprises a jack base welded at the bottom end of the inner side of a reinforcement cage, a jack is mounted at the bottom of the jack base through a groove matched with a bolt hole bolt, the output end of the jack is connected with a conical tip through a push rod, and a grouting hole is formed in the conical tip. The jack is sleeved with a protective cylinder fixedly connected with the top of the jack base, an opening allowing the conical tip to pass through is formed in the bottom of the protective cylinder, a sealing assembly is detachably installed at the opening, and the jack drives the push rod to push the conical tip to penetrate through the sealing assembly to be fed into a soil layer. And an expanded head can be formed at the bottom of the pile foundation through grouting of the grouting hole. The method has the beneficial effects that the conical tip is pushed through the jack, the grouting hole is sent into a deeper soil layer, an expanded head with a larger area can be formed at the bottom of the pile foundation through grouting, and the vertical bearing capacity of the pile foundation is improved.
本发明公开了一种后顶压浆扩大头桩基础结构，属于桩基础技术领域，包括焊接在钢筋笼内侧底端的千斤顶底座，千斤顶底座底部通过开设的凹槽配合螺栓孔螺栓安装有千斤顶，千斤顶的输出端通过推杆连接有锥尖，锥尖上设有压浆孔，压浆孔与压浆管组件连通，千斤顶外部套设有与千斤顶底座顶部固定连接的护筒，护筒底部开设有供锥尖通过的开口，并在开口处可拆卸安装有密封组件，千斤顶驱动推杆顶推锥尖穿过密封组件送入土层，能够在桩基底部通过压浆孔压浆形成扩大头。本发明的有益效果是：通过千斤顶顶推锥尖，将压浆孔送入更深的土层，通过压浆能够在桩基底部形成更大面积的扩大头，提高桩基础竖向承载力。
Foundation structure of post-jacking grouting expanded-head pile
The invention discloses a rear jacking grouting expanded head pile foundation structure, which belongs to the technical field of pile foundations and comprises a jack base welded at the bottom end of the inner side of a reinforcement cage, a jack is mounted at the bottom of the jack base through a groove matched with a bolt hole bolt, the output end of the jack is connected with a conical tip through a push rod, and a grouting hole is formed in the conical tip. The jack is sleeved with a protective cylinder fixedly connected with the top of the jack base, an opening allowing the conical tip to pass through is formed in the bottom of the protective cylinder, a sealing assembly is detachably installed at the opening, and the jack drives the push rod to push the conical tip to penetrate through the sealing assembly to be fed into a soil layer. And an expanded head can be formed at the bottom of the pile foundation through grouting of the grouting hole. The method has the beneficial effects that the conical tip is pushed through the jack, the grouting hole is sent into a deeper soil layer, an expanded head with a larger area can be formed at the bottom of the pile foundation through grouting, and the vertical bearing capacity of the pile foundation is improved.
本发明公开了一种后顶压浆扩大头桩基础结构，属于桩基础技术领域，包括焊接在钢筋笼内侧底端的千斤顶底座，千斤顶底座底部通过开设的凹槽配合螺栓孔螺栓安装有千斤顶，千斤顶的输出端通过推杆连接有锥尖，锥尖上设有压浆孔，压浆孔与压浆管组件连通，千斤顶外部套设有与千斤顶底座顶部固定连接的护筒，护筒底部开设有供锥尖通过的开口，并在开口处可拆卸安装有密封组件，千斤顶驱动推杆顶推锥尖穿过密封组件送入土层，能够在桩基底部通过压浆孔压浆形成扩大头。本发明的有益效果是：通过千斤顶顶推锥尖，将压浆孔送入更深的土层，通过压浆能够在桩基底部形成更大面积的扩大头，提高桩基础竖向承载力。
Foundation structure of post-jacking grouting expanded-head pile
一种后顶压浆扩大头桩基础结构
CEN FENG (author) / ZHAO MENG (author) / ZHU WENBO (author) / LIU ZHIWANG (author) / LI YONGHAI (author) / YANG JIAYI (author) / LIU WENSHENG (author) / LYU CONG (author) / DAI GUOLIANG (author) / LI ZHONGWEI (author)
2024-03-22
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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