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A platform for research: civil engineering, architecture and urbanism
Pile foundation buckling prevention method for reinforcing liquefied soil between piles in local depth
The invention discloses a pile foundation buckling prevention method for reinforcing local depth inter-pile liquefied soil. The method comprises the following steps that firstly, a reinforcing scheme is theoretically calculated; and 2, site construction. The buckling-restrained braces are connected with the foundation piles to form a reinforcing body, transverse deformation of the foundation piles is restrained, the overall lateral rigidity is improved, and differential settlement of the foundation piles is reduced; the combined jack is used for transmitting force to the sectional pressure rod, the buckling-restrained brace is driven into the fixed depth section by section, the lower end of the buckling-restrained brace is in a triangular prism shape, soil body resistance is small, and accurate positioning can be achieved. Large construction equipment is not needed, the problems that an existing building is narrow in space and not suitable for construction are solved, waste residues, waste, noise pollution and the like cannot be generated, and environment-friendly construction is achieved. The bearing capacity of the foundation soil can be improved and the drainage speed of the liquefied soil layer can be increased by backfilling gravel and injecting reinforcing slurry in holes left in the construction of the buckling-restrained brace, and finally, the pile foundation and the foundation soil are reinforced at the same time, so that two purposes are achieved.
本发明公开了一种加固局部深度桩间液化土的桩基防屈曲方法，所述方法包括如下步骤：步骤一、加固方案理论计算；步骤二、现场施工。本发明利用防屈曲支撑连接基桩组成一个加固体，约束了基桩的横向变形，提高了整体侧向刚度，减小了基桩的差异沉降；利用组合千斤顶传力给分节压力杆，将防屈曲支撑分段逐段打入到固定深度，防屈曲支撑下端为三棱柱型，土体阻力小，可精准定位。本发明不需大型施工设备，解决了已有建筑空间狭小、不宜施工的问题，且不会产生废渣、废物、噪声污染等，环保施工。防屈曲支撑施工留下的孔隙，通过回填碎石和注射加固浆液，既能提高地基土的承载力，也能加快液化土层排水速度，最终实现桩基和地基土同时加固，一举两得。
Pile foundation buckling prevention method for reinforcing liquefied soil between piles in local depth
The invention discloses a pile foundation buckling prevention method for reinforcing local depth inter-pile liquefied soil. The method comprises the following steps that firstly, a reinforcing scheme is theoretically calculated; and 2, site construction. The buckling-restrained braces are connected with the foundation piles to form a reinforcing body, transverse deformation of the foundation piles is restrained, the overall lateral rigidity is improved, and differential settlement of the foundation piles is reduced; the combined jack is used for transmitting force to the sectional pressure rod, the buckling-restrained brace is driven into the fixed depth section by section, the lower end of the buckling-restrained brace is in a triangular prism shape, soil body resistance is small, and accurate positioning can be achieved. Large construction equipment is not needed, the problems that an existing building is narrow in space and not suitable for construction are solved, waste residues, waste, noise pollution and the like cannot be generated, and environment-friendly construction is achieved. The bearing capacity of the foundation soil can be improved and the drainage speed of the liquefied soil layer can be increased by backfilling gravel and injecting reinforcing slurry in holes left in the construction of the buckling-restrained brace, and finally, the pile foundation and the foundation soil are reinforced at the same time, so that two purposes are achieved.
本发明公开了一种加固局部深度桩间液化土的桩基防屈曲方法，所述方法包括如下步骤：步骤一、加固方案理论计算；步骤二、现场施工。本发明利用防屈曲支撑连接基桩组成一个加固体，约束了基桩的横向变形，提高了整体侧向刚度，减小了基桩的差异沉降；利用组合千斤顶传力给分节压力杆，将防屈曲支撑分段逐段打入到固定深度，防屈曲支撑下端为三棱柱型，土体阻力小，可精准定位。本发明不需大型施工设备，解决了已有建筑空间狭小、不宜施工的问题，且不会产生废渣、废物、噪声污染等，环保施工。防屈曲支撑施工留下的孔隙，通过回填碎石和注射加固浆液，既能提高地基土的承载力，也能加快液化土层排水速度，最终实现桩基和地基土同时加固，一举两得。
Pile foundation buckling prevention method for reinforcing liquefied soil between piles in local depth
加固局部深度桩间液化土的桩基防屈曲方法
TANG LIANG (author) / MAN XIAOFENG (author) / LING XIANCHANG (author) / SI PAN (author) / CONG SHENGYI (author) / TIAN SHUANG (author)
2023-11-17
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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