Disclosed are a reinforcing and lifting method and a reinforcing and lifting structure for large-scale piers of high-speed rail. The method comprises: obliquely drilling grouting holes for a pile shoe body downward around the bridge pier cap, the hole bottom goes deep into a pile foundation side position close to the bottom end of the bridge pier pile foundation, grouting the hole bottom, and reinforcing the soil body between a plurality of pile foundations and around the pile foundations to form the pile shoe body; vertically drilling holes downward around the bridge pier cap to form a plurality of curtain holes at intervals, and grouting the curtain holes to form an enclosed curtain wall, the curtain wall and the pile shoe body form an inverted groove structure; obliquely drilling holes downward to form lifting holes, such that the bridge piers are gradually raised to a preset height.

Disclosed are a reinforcing and lifting method and a reinforcing and lifting structure for large-scale piers of high-speed rail. The method comprises: obliquely drilling grouting holes for a pile shoe body downward around the bridge pier cap, the hole bottom goes deep into a pile foundation side position close to the bottom end of the bridge pier pile foundation, grouting the hole bottom, and reinforcing the soil body between a plurality of pile foundations and around the pile foundations to form the pile shoe body; vertically drilling holes downward around the bridge pier cap to form a plurality of curtain holes at intervals, and grouting the curtain holes to form an enclosed curtain wall, the curtain wall and the pile shoe body form an inverted groove structure; obliquely drilling holes downward to form lifting holes, such that the bridge piers are gradually raised to a preset height.

Disclosed are a reinforcing and lifting method and a reinforcing and lifting structure for large-scale piers of high-speed rail. The method comprises: obliquely drilling grouting holes for a pile shoe body downward around the bridge pier cap, the hole bottom goes deep into a pile foundation side position close to the bottom end of the bridge pier pile foundation, grouting the hole bottom, and reinforcing the soil body between a plurality of pile foundations and around the pile foundations to form the pile shoe body; vertically drilling holes downward around the bridge pier cap to form a plurality of curtain holes at intervals, and grouting the curtain holes to form an enclosed curtain wall, the curtain wall and the pile shoe body form an inverted groove structure; obliquely drilling holes downward to form lifting holes, such that the bridge piers are gradually raised to a preset height.

Disclosed are a reinforcing and lifting method and a reinforcing and lifting structure for large-scale piers of high-speed rail. The method comprises: obliquely drilling grouting holes for a pile shoe body downward around the bridge pier cap, the hole bottom goes deep into a pile foundation side position close to the bottom end of the bridge pier pile foundation, grouting the hole bottom, and reinforcing the soil body between a plurality of pile foundations and around the pile foundations to form the pile shoe body; vertically drilling holes downward around the bridge pier cap to form a plurality of curtain holes at intervals, and grouting the curtain holes to form an enclosed curtain wall, the curtain wall and the pile shoe body form an inverted groove structure; obliquely drilling holes downward to form lifting holes, such that the bridge piers are gradually raised to a preset height.

A method for lifting and repairing a foundation is disclosed. The method includes digging a well in at least one lateral surface of the foundation, installing a shear plate to the at least one lateral surface of the foundation inside the opening of the well, further digging the well to a maximum depth of 6 m, compacting a bottom surface of the well at the maximum depth of 6 m, forming a layer of gravel, compacting the layer of the gravel, placing a double column inside the well, pouring a plurality of gravel particles into the well, forming a cemented gravel layer by injecting cement slurry into the well to fill empty spaces among the plurality of gravel particles, installing a tensile system on top of the double column, forming at least a vacant space between the foundation and ground by lifting the foundation from the ground using the tensile system, and fixing the foundation by injecting cement slurry into the vacant space.

A method for lifting and repairing a foundation is disclosed. The method includes digging a well in at least one lateral surface of the foundation, installing a shear plate to the at least one lateral surface of the foundation inside the opening of the well, further digging the well to a maximum depth of 6 m, compacting a bottom surface of the well at the maximum depth of 6 m, forming a layer of gravel, compacting the layer of the gravel, placing a double column inside the well, pouring a plurality of gravel particles into the well, forming a cemented gravel layer by injecting cement slurry into the well to fill empty spaces among the plurality of gravel particles, installing a tensile system on top of the double column, forming at least a vacant space between the foundation and ground by lifting the foundation from the ground using the tensile system, and fixing the foundation by injecting cement slurry into the vacant space.

A high-rise building settling reinforcing and lifting correcting construction method, comprising: drilling holes vertically downward around a foundation slab of a building, forming multiple curtain wall holes sunk into foundation soil at intervals; injecting slurry into the curtain wall holes, slurry ranges meshing and overlapping with each other, forming a curtain wall, the curtain wall enclosing foundation soil under the foundation slab of the building, separating foundation soil inside and outside the range of the building; providing multiple vertical reinforcement slurry injection holes on the foundation slab and injecting slurry, fully reinforcing soil near the foundation slab, forming a reinforcement body; drilling a hole downward, forming a lifting hole, pressure-injecting slurry into a bottom part of the lifting hole, the foundation soil is continuously filled and compressed, creating a lifting force, and the building gradually rising to a determined lift height.

A high-rise building settling reinforcing and lifting correcting construction method, comprising: drilling holes vertically downward around a foundation slab of a building, forming multiple curtain wall holes sunk into foundation soil at intervals; injecting slurry into the curtain wall holes, slurry ranges meshing and overlapping with each other, forming a curtain wall, the curtain wall enclosing foundation soil under the foundation slab of the building, separating foundation soil inside and outside the range of the building; providing multiple vertical reinforcement slurry injection holes on the foundation slab and injecting slurry, fully reinforcing soil near the foundation slab, forming a reinforcement body; drilling a hole downward, forming a lifting hole, pressure-injecting slurry into a bottom part of the lifting hole, the foundation soil is continuously filled and compressed, creating a lifting force, and the building gradually rising to a determined lift height.

A high-rise building settling reinforcing and lifting correcting construction method, comprising: drilling holes vertically downward around a foundation slab of a building, forming multiple curtain wall holes sunk into foundation soil at intervals; injecting slurry into the curtain wall holes, slurry ranges meshing and overlapping with each other, forming a curtain wall, the curtain wall enclosing foundation soil under the foundation slab of the building, separating foundation soil inside and outside the range of the building; providing multiple vertical reinforcement slurry injection holes on the foundation slab and injecting slurry, fully reinforcing soil near the foundation slab, forming a reinforcement body; drilling a hole downward, forming a lifting hole, pressure-injecting slurry into a bottom part of the lifting hole, the foundation soil is continuously filled and compressed, creating a lifting force, and the building gradually rising to a determined lift height.

A high-rise building settling reinforcing and lifting correcting construction method, comprising: drilling holes vertically downward around a foundation slab of a building, forming multiple curtain wall holes sunk into foundation soil at intervals; injecting slurry into the curtain wall holes, slurry ranges meshing and overlapping with each other, forming a curtain wall, the curtain wall enclosing foundation soil under the foundation slab of the building, separating foundation soil inside and outside the range of the building; providing multiple vertical reinforcement slurry injection holes on the foundation slab and injecting slurry, fully reinforcing soil near the foundation slab, forming a reinforcement body; drilling a hole downward, forming a lifting hole, pressure-injecting slurry into a bottom part of the lifting hole, the foundation soil is continuously filled and compressed, creating a lifting force, and the building gradually rising to a determined lift height.