SU1700146A1 - Slope-holding structure - Google Patents

Abstract

The invention relates to builder 1 and can be used to strengthen landslide-prone slopes. The goal is to increase the bearing capacity and rigidity of the structure. Construction 4 contains bored piles fixed by lower ends into the bedrock of the soil 5. Piles along the length and along the top are joined by split pins, which are made at a distance from each other along the height of the specified part of the pile to improve static work. 3 Il.

Description

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The invention relates to the construction and can be used in the development of landslide-prone slopes.

Known decompression structure, which is a retaining mill, arranged in the lower part of the slope 1,

The disadvantages of such retracting structures are the low carrying capacity for tipping and shearing.

The closest to the proposed design is a slope-bearing structure, which is a series of bored piles, the lower ends of which are embedded in strong non-movable rocks, and the upper part is joined by a monolithic grillage 2, „. The disadvantages of such a holding structure are low-carrying the ability due to the geometric shape of the structure, greater flexibility, and also greater material intensity.

The purpose of the invention is to increase the carrying capacity while increasing stiffness, reducing cost, improving static work while reducing material consumption, improving spatial work while reducing material intensity of the supporting structure.

The goal is achieved by the fact that in order to increase the bearing capacity while simultaneously increasing the rigidity of the shear structure, the bored piles are arranged in such a way that they form a fold oriented by the angles in the direction of soil creep, while the lower part of the piles is smaller in diameter di c the gap between them. The gap is calculated in such a way that the soil does not pass between two adjacent beds when crawling. The piles are inserted at the lower ends into unmovable soil masses. The upper part of the piles is made of a larger diameter da so that the piles become intersecting. The height of the upper portion h is determined by calculation depending on the magnitude of the pressure of the sliding masses. At the same time it is necessary to ensure the compatibility of the work of individual piles. The value of the lower part of hi is chosen taking into account stuttering in unshiftable arrays.

The improvement of static work while liquefying material consumption is achieved due to the fact that the piles, frontal to the soil being held, are made with hollow annular sections, and the rear ones - with solid sections. This is due to the fact that the frontal piles work for stretching and the rear ones for compression.

Improvement of spatial work while reducing material consumption is achieved due to the fact that the piles are made to the full depth of one diameter with a gap and connected in height over a certain distance by monolithic reinforced concrete sections. The height of the secluded sections of the PP and their location is taken into account by calculation, based on the magnitude of the landslide pressure, the depth of the sliding mass and the length of the pile.

Figure 1 shows a top view of the escaping structure; in Fig. 2a, b - section A-A in Fig. 1; FIG. 3 shows a side-supporting structure, a fragment.

FIG. 1-3, sliding masses 1, direction 2 of sliding, boundary of landslide massif 3, slope-bearing structures 4 in the form of fold, unmovable layers of soil 5, bored piles of smaller diameter, bored intersecting piles 7 of larger diameter, piles 8 of solid section, monolithic iron sections, monolithic gland, monolithic gland, monolithic glands, 1 mm. sections 9, as well as piles 10 of annular section.

The skewing structure 4 includes bored piles 6, 8, 10, fixed with lower ends to the bedrock of soil 5. In various cases, the piles are combined in length and along the top by securing sections 7.9, forming a single spatial system - a pleating fold. A part of the retracting structure is extended beyond the boundaries of the landslide massif 3, the Fold is oriented by angles in the direction 2 of the movement of the sliding masses 1,

Slope structure 4 is erected as follows.

The direction 2 of the movement of the sliding masses 1 and the boundaries of the landslide mass 3 is determined. The axes of the warehouse 4 are carried out. Then, under the protection of the bentonite suspension, up to a certain calculated depth of the drilling of the well under the piles of a larger diameter, and piles 6 and 7 are erected. Drill of the borehole and erect piles of solid 8 and ring 10 sections. Further, the borehole is drilled and the entire pile section 8 is raised to the full depth with the construction of intersecting reinforced concrete monolithic sections 9. The gaps between the intersecting sections 9 are filled by mothers; ale, capable of passing groundwater during operation and preventing filtration of cement milk during the construction of the structure. The pile ends are anchored into the bedrock.

The use of the invention will allow more efficient development of landslide-prone slopes.

Claims (3)

Claim 1. Offsetting construction, including a series of bored piles fixed in unmovable soil masses with their lower parts, characterized in that, in order to increase bearing capacity, rigidity, bored piles are arranged with a fold in terms of slope oriented with its corners in the direction of soil creep and against its creep, while the lower part of the piles is made of a smaller diameter with a gap between them, and the top but  eight 0 part of the piles is made of a larger diameter with the formation of a solid wall in the ground. 2. The design of pop. 1, characterized in that, in order to improve the spatial work of the folds, the lower parts of the piles are interconnected by reinforced monolithic intersecting sections with splines, which are made at a distance from each other along the height of said part of the pile, 3. Constructions according to claims 1 and 2, characterized in that, in order to improve static work with a simultaneous decrease in material consumption, front piles with respect to the soil retained are made of annular section, and rear piles are of continuous section. 2