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A platform for research: civil engineering, architecture and urbanism
Bridge pile foundation underpinning structure and method
The invention relates to a bridge pile foundation underpinning structure and method.The underpinning structure comprises a concrete cushion layer, a bottom plate fixed to the upper portion of the concrete cushion layer and used for fixing multiple pile foundations, a vertical wall used for fixing the multiple pile foundations and used for being fixed between a bridge bent cap and the bottom plate, and two sets of supporting pieces fixed between the vertical wall and the bottom plate; the two sides of the bottom plate oppositely extend outwards in the direction perpendicular to the connecting line of the pile foundations, the length direction of the vertical wall is the same as the connecting line direction of the pile foundations, the two sets of supporting pieces are arranged on the two sides of the vertical wall respectively, the bottom plate is provided with cutting operation openings right opposite to the pile foundations, and the cutting operation openings are filled with post-pouring concrete. The technical problems that in the prior art, when a shield tunneling machine penetrates through a pile foundation group below an existing bridge, a pile foundation treatment method is difficult to implement in a narrow area on site, and the foundation bearing capacity requirement and the bridge structure stability are easily affected in pile foundation pulling-out construction are solved.
本发明涉及一种桥梁桩基托换结构及方法，托换结构包括混凝土垫层、固定于混凝土垫层上部且用于固定多根桩基的底板、用于固定多根该桩基且用于固定在桥梁盖梁与该底板之间的立墙、固定于该立墙与该底板之间的两组支撑件，该底板的两侧沿垂直于桩基的连线方向相对向外延伸，该立墙的长度方向与桩基的连线方向相同，两组该支撑件分别布设于该立墙的两侧，该底板上正对于每根该桩基坑均开设有切割操作口，该切割操作口通过后浇混凝土填充。本发明解决了现有技术中盾构机穿越既有桥梁下方的桩基群时，对桩基的处理方法在现场场地狭小的区域难以实施，且在进行桩基拔除施工中容易影响地基承载力要求和桥梁结构稳定性的技术问题。
Bridge pile foundation underpinning structure and method
The invention relates to a bridge pile foundation underpinning structure and method.The underpinning structure comprises a concrete cushion layer, a bottom plate fixed to the upper portion of the concrete cushion layer and used for fixing multiple pile foundations, a vertical wall used for fixing the multiple pile foundations and used for being fixed between a bridge bent cap and the bottom plate, and two sets of supporting pieces fixed between the vertical wall and the bottom plate; the two sides of the bottom plate oppositely extend outwards in the direction perpendicular to the connecting line of the pile foundations, the length direction of the vertical wall is the same as the connecting line direction of the pile foundations, the two sets of supporting pieces are arranged on the two sides of the vertical wall respectively, the bottom plate is provided with cutting operation openings right opposite to the pile foundations, and the cutting operation openings are filled with post-pouring concrete. The technical problems that in the prior art, when a shield tunneling machine penetrates through a pile foundation group below an existing bridge, a pile foundation treatment method is difficult to implement in a narrow area on site, and the foundation bearing capacity requirement and the bridge structure stability are easily affected in pile foundation pulling-out construction are solved.
本发明涉及一种桥梁桩基托换结构及方法，托换结构包括混凝土垫层、固定于混凝土垫层上部且用于固定多根桩基的底板、用于固定多根该桩基且用于固定在桥梁盖梁与该底板之间的立墙、固定于该立墙与该底板之间的两组支撑件，该底板的两侧沿垂直于桩基的连线方向相对向外延伸，该立墙的长度方向与桩基的连线方向相同，两组该支撑件分别布设于该立墙的两侧，该底板上正对于每根该桩基坑均开设有切割操作口，该切割操作口通过后浇混凝土填充。本发明解决了现有技术中盾构机穿越既有桥梁下方的桩基群时，对桩基的处理方法在现场场地狭小的区域难以实施，且在进行桩基拔除施工中容易影响地基承载力要求和桥梁结构稳定性的技术问题。
Bridge pile foundation underpinning structure and method
桥梁桩基托换结构及方法
MEI JUN (author) / WAN ZHIAN (author) / LI HUI (author) / XU YUAN (author) / LU ZHIJIAN (author) / YIN DECHUN (author) / CHEN YUKANG (author) / LU YAO (author) / WANG YONG (author) / ZHANG CHANGSHUN (author)
2024-01-09
Patent
Electronic Resource
Chinese
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