Landslide control structure

FIELD: building, particularly retaining or protecting walls.

SUBSTANCE: landslide control structure comprises inclined injection piles arranged in several groups, connected one to another by grillage and built-in stable ground by lower ends thereof. The piles are united in groups each containing three piles arranged in pyramid corners so that one triangular plane defined by each pile group lies against landslide direction and is supported by struts. Above planes of neighboring triangles intersect in lower one-third part.

EFFECT: increased structure reliability and stability.

2 dwg

 

The invention relates to the construction, namely, to designs of landslide protection works.

Known landslide construction including spaced rows in lower part of the slope of the landslide piles, buried in stable soils, and uniting piles on top of the grillage, characterized in that the pile each upstream along the slope of the landslide number of executed height less the height of the pile adjacent downstream row with the head of the piles of all ranks combined grillage with the appearance of a system of inclined intersecting beams (A.S. SU # 1337482 A1 bul. No. 34, 1987). A disadvantage of the known device is the need of the inclined passages intersecting trenches and concrete grillage beams on the slope.

Closest to the proposed construction to the technical essence and the achieved result is a landslide construction including a number embedded in sustainable soil piles, combined grillage, characterized in that it has placed in piles in the course of movement of the landslide frame with struts on which they are supported, leaning piles of the first series, with the articulation of the upper and lower parts (A.S. SU # 1744201 And 1 bull. 24, 1992). A disadvantage of the known device is the possibility of corrosion of the hinge, and that the working position of the device is only after the e displacement of the landslide.

Technical solution to the problem is to keep the soil body of the landslide by landslide structures including a series of inclined of the piles, combined grillage and sealed lower ends to sustainable soils grouped by three and located on the edges of the pyramid, providing increased reliability of structure and flexibility, accelerating construction and reducing labor costs and reduce material consumption.

This object is achieved in that landslide structure includes rows of piles, the combined caps and sealed lower ends to sustainable soil and piles, made of special and inclined grouped by three and are located at the edges of the pyramid so that one of the triangular planes formed by each group of piles, turned towards shifting the ground and supported by a brace, with such plane adjacent triangles intersect in the lower third.

The novelty of the claimed proposal due to the fact that the landslide construction including rows of piles, the combined caps and sealed bottom ends in stable soils, piles are grouped by three and are located at the edges of the pyramid. One of the triangular planes formed by each group of inclined b is reinjection piles, facing towards shifting the ground and supported by the strut. This design allows to significantly improve the stability of individual parts and of the entire structure as a whole by creating a three-dimensional system of hard figures - triangles. In addition, the spatiality of the location of groups of piles allows more flexible placement of structures in General. To create maximum resistance to movement of the landslide each pyramid can be deployed with one face perpendicular to the displacement vector of the earth in this section. The plane of the edges of adjacent groups of piles intersect in the lower third, which increases the punching shear resistance of the soil between the piles.

The invention is illustrated in the drawing, in which figure 1 shows a landslide construction in the plan; figure 2 - in the future.

Landslide structure includes a series of piles 1 and 2, the combined grillage 3 and sealed lower ends to sustainable soils 4. Piles 1 and 2 are special and inclined grouped by three and are located at the edges of the pyramid so that one of the triangular planes formed by each group of piles 1, directed towards shifting the ground 5 and are supported by the strut 2, and such plane adjacent triangles intersect in the lower third.

The shifting pressure of the soil n is directly perceived by the piles 1 in the plane of the face facing towards the landslide. Crossing piles adjacent groups in this area increases the resistance of plants bursting of the soil between the piles. Due to the spatial location of the piles along the sides of the pyramid, the load is redistributed between the pile 1 and pile-strut 2. The use of the design of structures geometrically invariant shapes (triangles) allows to increase the rigidity of the structure as a whole in comparison with the multi-row pile construction with vertical piles. The slope of the pile 1 in the vertical plane can reduce the perceived landslide load, and therefore, the magnitude of the bending moments in the pile elements in each group.

Landslide the structure is being built in the following way: during the period of stabilization in the body of the landslide drilled bushes inclined wells, grouped by three and located on the edges of the pyramid. The pile is oriented so that one of the triangular planes formed by piles 1 in every Bush, was oriented towards the landslide and supported by the strut 2. The length of the wells is determined on the basis of fixing the piles in stable soils.

Wells are filled under pressure with concrete plastic consistency; then in wells installed reinforcing cages of piles 1 and 2. For device R is Starkov 3 is installed formwork, in which stack frames design configuration and align them with the reinforcement of piles 1 and 2. Then do the concreting of pile caps.

Landslide construction including rows of piles, the combined caps and sealed bottom ends in stable soils, characterized in that the piles are made of special and inclined grouped by three and are located at the edges of the pyramid so that one of the triangular planes formed by each group of piles, turned towards shifting the ground and supported by the strut, and such plane adjacent triangles intersect in the lower third.



 

Same patents:

FIELD: building, particularly for slope consolidation and for stabilizing deep front landslide areas.

SUBSTANCE: structure includes foundation mat and piles formed in wells grouped in rows. Upper pile parts are embedded in foundation mat, lower one is restrained by not-sliding ground layers. Piles are composite along their lengths. Central pile parts are not filled with concrete. Heights of upper and lower pile parts decrease towards landslide head. Structure to prevent deep front land-slides comprises separate local pile groups connected by foundation mats and located within landslide body boundaries. Each foundation mat has tension bars anchored in stable slope layers and arranged under and above foundation mat along slope to retain thereof against displacement and rotation.

EFFECT: improved slope stability, increased operational reliability of structure built on wide landslides, reduced building time and material consumption.

2 dwg

FIELD: building, particularly underground structures.

SUBSTANCE: method involves arranging geotechnical barrier in ground between foundation of existent building and underground structure to be built along with embedding thereof for design depth; building walls and bottom of underground structure. Geotechnical barrier is formed by introducing injectors in ground on the path of deflected mode change wave propagation in ground and by injecting cement mix up to obtaining Kr ≥ 0.5, where Kr is relaxation coefficient equal to ratio of terminal ground pressure after relaxation to maximal injection cement mix pressure. Walls and bottom are built under the deflected mode control. When deflected mode value changes cement mix is fed to recover deflected mode value in ground.

EFFECT: prevention of ground deflected mode change under building foundation during underground structure erection.

1 dwg

FIELD: building, particularly underground structures.

SUBSTANCE: method involves arranging geotechnical barrier in ground between foundation of existent building and underground structure to be built; embedding thereof for design depth; building walls and bottom of underground structure. Geotechnical barrier is formed by making crack extending for a design barrier embedding depth on the path of ground deflected mode change wave propagation. Then flat pneumatic chamber is installed in the crack and compressed air is pumped in pneumatic chamber to obtain pressure corresponding to initial ground deflected mode. If ground deflected mode changes during structure erection compressed air is repeatedly pumped in pneumatic chamber to recover initial pressure. After structure erection completion hardening mortar is fed into pneumatic chamber.

EFFECT: prevention of ground deflected mode change under building foundation during underground structure erection.

2 dwg

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Landslide design // 2224069
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FIELD: building, particularly for bordering or stiffening the sides of foundation pits.

SUBSTANCE: method involves driving vertical piles in ground along pit perimeter for depth exceeding pit bottom level; excavating ground up to reaching pit bottom level to open bordering member surfaces facing inwards; securing horizontal distribution beams to above surfaces to create framing belt; installing spaced cross-pieces along pit perimeter; leaning the first cross-piece ends against distribution beams and securing the second ends thereof into pit bottom ground; removing cross-pieces after reinforced concrete pit bottom forming. Ground is excavated to form inner initial pit and then stepped trench is dug out under the protection of thixotropic mix along the initial pit perimeter in direction transversal to bordering formed by piles. Lower trench step is located below pit bottom level and the second cross-piece ends are secured to above step which is then concreted under the protection of thixotropic mix. After hardening support shoe of cross-pieces trench is filled with previously excavated ground and ground is excavated of the pit up to reacting pit bottom level.

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3 cl, 2 dwg

FIELD: building, particularly engineering structures adapted for protection of linear and separate installations, including motor roads and railroads, against rock sliding, rock sloughing and mudflows.

SUBSTANCE: retaining wall includes relaxation device, face and foundation slabs rigidly secured one to another. Foundation slab is anchored in foundation ground. Relaxation device is formed of reinforced concrete slabs arranged in two longitudinal rows and secured to face slab by springs with variable spring force so that reinforced concrete slabs extend at different angles to horizon line. Low row slabs have lesser angle of inclination. Face slab and low slab row are provided with through slots. Foundation plate has cylindrical base and connected to inclined anchor by means of damping device.

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2 dwg

FIELD: building, particularly for slope consolidation and for stabilizing deep front landslide areas.

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2 dwg

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FIELD: building, particularly for slope consolidation and for stabilizing deep front landslide areas.

SUBSTANCE: structure includes foundation mat and piles formed in wells grouped in rows. Upper pile parts are embedded in foundation mat, lower one is restrained by not-sliding ground layers. Piles are composite along their lengths. Central pile parts are not filled with concrete. Heights of upper and lower pile parts decrease towards landslide head. Structure to prevent deep front land-slides comprises separate local pile groups connected by foundation mats and located within landslide body boundaries. Each foundation mat has tension bars anchored in stable slope layers and arranged under and above foundation mat along slope to retain thereof against displacement and rotation.

EFFECT: improved slope stability, increased operational reliability of structure built on wide landslides, reduced building time and material consumption.

2 dwg

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