RU2481436C2 - Mudflow straight tray - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: mudflow straight tray comprises symmetrical monolithic reinforced concrete walls 1 and a split bottom. Walls of the tray 1 have cantilever parts, arranged at the angle α to the horizontal plane of the bottom. Cantilever parts of the walls 1 are loaded with a material of the bottom part of the tray. The tray bottom is made from a rock fragment material 3 and gabion structures 2. Gabions 2 are fixed to tray walls with the help of anchor joints 4.

EFFECT: improved operational reliability.

1 dwg

Description

The invention relates to hydraulic engineering and can be used to pass mudflows through settlements, industrial enterprises and other objects, allows to pass mudflow through an object or bypassing it.

Known tray polygonal cross-section with symmetrical slopes (Grishin MM Hydrotechnical structures. Part II. - M .: Gosstroyizdat, 1955, p. 292, fig. 28-24 a, b) / 1 /.

The disadvantage of this tray is its low economic efficiency, caused by increased consumption of reinforced concrete, as well as the complexity of manufacturing due to the large volume of concrete work.

Known selector tray polygonal section with symmetrical slopes (RU 2202678 C2) / 2 /.

The disadvantage of this selector tray is its low operational reliability, due to the poor stability of the side walls to capsize. The pressure of mudflow on the walls of the tray cannot be compensated by backfilling the structure. The fastening of the side slopes with an armoboot construction can lead to the destruction of the structure under intense dynamic and seismic loads. Low economic efficiency caused by increased consumption of concrete.

Known tray in the form of a dock structure with a split bottom (Bergen R.I. Design of tray and tubular structures of reclamation facilities. - M .: Kolos, 1995, p.121, Fig.2.10) / 3 /, selected as the closest analogue.

The disadvantage of this tray is its low operational reliability, due to the poor stability of the side walls to capsize. The magnitude of the load to which the walls of the tray are subjected to the dynamic effects of mudflow is not comparable with the load from the passage of the water stream. The pressure created by the mudflow on the walls of the tray cannot be compensated by using only backfill.

The technical result achieved by the present invention is to increase operational reliability by increasing the stability of the walls of the tray to capsize, as well as increasing the economic efficiency of the structure, achieved by reducing the consumption of reinforced concrete obtained through the use of clastic rock material and gabion structures.

This technical result is achieved by the fact that in the screening tray containing monolithic reinforced concrete walls having cantilever parts and backfill, a split bottom, cantilever parts of the walls are located at an angle α to the horizontal plane of the bottom, which is the cantilever load and consists of clastic rock material and gabion structures secured by anchors to the walls.

Figure 1 shows a cross section of a screening tray.

The selector tray contains reinforced concrete walls of the tray 1, a split bottom made of tightly placed improvised rock material 3, fixed with gabion structures 2 laid on top, fixed to the walls using anchor fasteners 4, backfilling of the walls of the tray 5.

The monolithic walls of the tray 1 are made of reinforced concrete and have a cantilever part located at an angle α to the horizontal plane of the bottom. The cantilever parts of the walls are loaded with clastic rock material 3 and gabion structures 2. The angle of inclination of the cantilever part α allows to increase the resistance of the walls of the tray to capsize and is taken depending on the calculated characteristics of the mudflow. The upper and lower wall thicknesses, respectively, t and T, the angle of inclination of the cantilever part α, as well as the geometric dimensions of the structure are taken according to the results of strength calculation.

Reinforced concrete walls 1, in the loaded state, perceive pressure from the stone fastening of the bottom 3, gabion structures 2 and from backfill 5, which significantly increases the stability of the wall structure to capsize when exposed to mudflow. Structurally, the left and right walls of the tray 1 work as retaining walls that are independent of each other and do not have a rigid connection to each other. This design allows you to more effectively absorb the load, leading to slight deformation of individual parts of the structure, without compromising the performance of the screening tray. The consumption of reinforced concrete is reduced by using, for fastening the bottom of the tray, tightly placed improvised stone material 3 and gabion structures 2. Economic efficiency increases in proportion to the width of the tray, this fact makes it possible to reduce the height of the walls 1, increasing the width of the tray. These manipulations with the dimensions make it possible to increase the design capacity of the structure by increasing the width of the tray, using for this purpose an additional volume of clastic rock material, without increasing the consumption of reinforced concrete.

The application of the invention will significantly improve the operational reliability of the screening tray, as well as obtain the economic effect achieved by saving reinforced concrete.

Claims (1)

Celestry tray containing monolithic reinforced concrete walls having cantilevered protrusions in the lower part and backfill, a split bottom, characterized in that the cantilevered protrusions are located at an angle α to the horizontal plane of the bottom, which is a load of cantilevers and consisting of clastic rock material and gabion structures, fixed by anchors to the walls.