SU1122771A1 - Prefabricated gravity dam - Google Patents

Abstract

DEPTH GRAVITATIONAL DAM, containing diamond-shaped blocks, laid in the body of the dam, and end blocks, forming the faces of the dam, characterized in that, in order to improve the stability and stress state of the dam, rhombic blocks are installed horizontally in the body of the dam with a larger diagonal, and the edges the dams are made of trapezoidal end blocks with one truncated vertex, the larger side of which is equal to two lengths of the side of the diamond-shaped block. (L

Description

". 112277

The invention relates to the field of engineering structures and can be used in the construction of dams and other supporting structures. -five

The concrete dam is known, composed of prefab paellelepiped blocks with beveled opposite faces and a monolithic eton in the area of the f13 dam faces. Q The disadvantages of this PLOT1IN design are the laboriousness of the formwork and concrete works for onolitic plots and the need for careful adjustment of the blocks to each jj rug in the prefab site.

Closest to the invention to the technical essence is a precast dam, including rhomboid blocks, laid into the body of the dam, and end blocks that form the faces of the dam, the diamond-shaped blocks are set to a larger diagonal 2}

The disadvantages of the known construction 25 are the unfavorable condition of the concrete blocks at high dam heights, the impossibility of building dams with a vertical edge and the resulting extra volume of concrete in this area.

The aim of the invention is to improve the stability and stress state of the dam.

This goal is achieved by the fact that in the gravitational flesh team, containing diamond-shaped blocks, laid in the frontage, and end blocks that form the faces of the dam, the diamond-shaped blocks are installed horizontally, and the edges of the dam They are made of trapezoidal end blocks with one truncated vertex, the larger side of which is equal to two sides of the diamond-shaped block.

FIG. 1 transverse profile of the dam; n FIG. 2 and 3 are transverse profiles of blocks, respectively, of a rhombic and trapezoidal shape; in fig. 4 — node I in FIG. one; FIGS. 5-50, node P of FIGS. one.

The body of the dam consists of blocks 1 of a diamond-shaped profile with truncated tops and blocks 2 of trapezoidal for {s with one truncated tip. , 5 The inner area of the dam is made of diamond-shaped blocks that are stacked with a long diagonal horizon;

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umbrella Trapezoid blocks are installed on the edges of the dam. The dam base is prepared with recesses of the triangular profile equal to half the profile of the rhomb-like block along a large diagonal (Fig. 1). Sections 3 on the crest of the dam are monolithic (although these areas can also be assembled).

The truncated tops of the po blocks of the inside of the dam create rectangular cavities 4 (node P.) into which the mounting loops of the 5 blocks fit. Drawings of blocks at the edges form triangular cavities 6, into which the mounting hinges also fit. For the convenience of assembling this type of dam, mounting loops are made on one of the obtuse angles of the rhombo-block and in the middle of the large side of the trapezoid block. All the motive loops are inside a 1-hole.

Along the length of the dam, the blocks are stacked with stitching seams, which increases the stability of the masonry and prevents through filtration.

The trapezoidal block in cross section consists, as it were, of a diamond shaped profn (FNG, 2) with the addition of the area of a triangle to one of its sides — complete: -1yy of the diamond shaped profile along a small diagonal (Fig. 3). As a result, the two sides and two angles (s / and,) of the rhombic and trapezoidal block are equal to each other. The third acute angle of the SL is shown on the rug of the angle / S, and the length of the trapezoidal block is equal to two lengths of the side of the rhombic block.

Making the dam base in the form of recesses of a triangular profile and laying them in diamond-shaped and trapezoidal blocks with a long diagonal track allows, firstly, to ensure the steady state of the entire masonry of the blocks without concrete plugs in the base from the upper and lower tails, secondly, to create using trapezoidal blocks, the vertical upper slope, which reduces the volume of concrete masonry by 30-40% or more, and improves the stress state on the blocks themselves, since the direction of the CCWS Between the blocks comes closer to the orientation of the area approx, which deystvyut maximum compressive stress. The magnitude of the acute angle of the blocks, it is possible to adjust the stress state in the blocks, choosing the most optimal, depending on the height of the dam and the types of concrete. .

If necessary, the joints can be monolithic, which, along with an increase in the rigidity of the dam, will also create an anti-filtration effect. Besides

Moreover, arranging loops on the lower side of the upper blocks (node .1) and passing the reinforcement between the upper and lower mounting loops, it is possible to create anti-seismic paths both vertically and horizontally.

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Claims (1)

COMBINED GRAVITY DAM, containing diamond-shaped blocks laid in the body of the dam, and end blocks forming the faces of the dam, characterized in that, in order to improve the stability and stress state of the dam, the diamond-shaped blocks are installed in the body of the dam with a larger diagonal horizontally, and the edges of the dam are made of trapezoidal end blocks with one truncated apex, the larger side of which is equal to two lengths of the side of the rhomboid block. Figure 1 ί