RU2317370C1 - Through transversal shore-protective structure - Google Patents

Abstract

FIELD: hydroengineering and reclamation construction, particularly to erect shore-protective structures for erodible river bed, dam slope and other structure guarding.

SUBSTANCE: shore-protective structure comprises composite spacing members, which form prism. The members include metal-plastic tube containing filler and are connected with each other to create triangle structures by member securing about transversal reinforcement with the use of collars to create triangular prism joints. Triangular prism section includes a number of triangular trusses. Flexible apron including spacing members is formed in end structure part. The apron spacing members include metal-plastic tubes containing wires and filler. Said spacing members are connected with each other by wire ends twisting to create joints. Angle of structure installation depends on river bed width, possible river water spread over bank and other physiographic river flow and bank characteristics. In the most favorable variant the structure is transversal to river stream and rests upon river bottom by one plane thereof. This results in stream velocity reduction and silt precipitation.

EFFECT: increased river bank protection efficiency and reliability, decreased costs of shore-protective structure erection and extended service life.

3 cl, 6 dwg

Description

The invention relates to hydraulic engineering and land reclamation construction and can be used as shore protection structures in eroded riverbeds, canals, slopes of dams, designed for various purposes, and other structures.

A device for attaching a slope of an earth structure [1] is known, comprising a synthetic filter coating laid on the slopes, retaining elements and a layer of stone outline. The holding elements are made in the form of crossbars, racks with hinges, ropes, mesh and limiters. The stone sketch is made in the form of gravel. The lower ends of the uprights are pivotally attached to the crossbar, and their upper ends to the rope. A mesh is attached to the rope. One of the ends of the rope is attached to the crossbar, and their other free ends are tensioned due to the application of force, the posts and the crossbar are connected by K-stops. Between the coating and the mesh, a layer of stone is laid. A layer of gravel protects the coating from dynamic wave action. In turn, it is reliably protected by a mesh held in place by ropes. The disadvantages of this technical solution are:

- the mount is directly in contact with the fluid flow and entrained sediments and therefore can undergo rapid attrition and destruction in a short time;

- the design is a rather complicated technical solution, which makes it not reliable in operation and expensive in cost;

- the efficiency of fastening is significantly reduced when there are large fluctuations in the water level, fluctuations in speed and flow rate in the river or canal.

The closest technical solution is a transverse through-shore protection structure containing elements assembled in a triangular prism [2]. The disadvantages of this technical solution are:

- the complexity of the form of elements manufactured in factories;

- the inconvenience of connecting nodes using complex technical solutions for connecting reinforced concrete elements;

- fastening in economic terms is not always an effective technical solution due to the use of industrial reinforced concrete structures.

The purpose of the invention is to increase the efficiency and reliability of protecting the banks of riverbeds from erosion and durability of the life of the shore protection structure.

This goal is achieved by the fact that on the eroded shore a through transverse shore protection structure is installed (Fig. 1). In this case, the installation angle depends on the width of the channel, the possible dump of the stream to the shore, and other morphological elements of the stream and channel. The most favorable option is to install them across the direction of the flow of one plane onto the bottom of the river, which creates the most favorable conditions when flowing around. The length of the transverse transverse shore protection structures and the distances between them are determined by the developed methodological recommendations. The transverse transverse shore protection structure (Fig. 1) is assembled mechanically by attaching spacer elements to the reinforcement with connecting elements and clamps (Fig. 5), which form triangular trusses. So sequentially connecting the spacer elements to the reinforcement, the height of the through transverse shore protection structure can be increased to any size. In this case, the cross section of this structure is a triangular truss (figure 3).

A flexible “apron” is attached to the head of the through transverse shore protection structure (Fig. 2), which is assembled into unchanging triangular shapes by twisting the wire ends of the spacer elements (Fig. 6) with special devices. Flexible "apron" is a means of protection against lowering when washing the head through the transverse shore protection structure. A flexible “apron” can be installed horizontally if its deepening is complicated. The best option is to install a flexible “apron” at an angle to the horizontal plane.

As a result of a decrease in the flow velocity, sediment sedimentation to the bottom occurs and lateral water erosion of river banks ceases.

The spacer element consists of a metal-plastic pipe in which the aggregate is located. As a filler, high-strength concrete M 250 ÷ 300 can be used.

The flow of water flowing through a through transverse shore protection structure reduces its speed, resulting in a decrease in the transporting ability of the flow and the precipitation of suspended sediment.

Figure 1 shows a longitudinal section through a transverse shore protection structure with a flexible "apron"; figure 2 is a plan of a through transverse shore protection structure; figure 3 is a triangular cross section of a prefabricated transverse through-shore protection structure, section AA in figure 2; figure 4 - spacer element, a perspective view; figure 5 - connecting node spacer element, node In figure 3; figure 6 - spacer element of a flexible "apron", a perspective view.

On the washable shore 1, a through transverse shore protection structure 2 is installed, consisting of triangular trusses 3 assembled from spacer elements 4. The spacer element 4 consists of a metal-plastic pipe 5 in which there is a filler 6. The spacer elements 4 are mechanically attached to the reinforcement 7 using clamps 8 and connecting elements 9. A flexible “apron” is attached to the end of the through transverse shore protection structure 10. The spacer elements 4 of the flexible “apron” 10 have wire ends 11 for connecting them to each other.

A transverse transverse shore protection structure is constructed and operates as follows. On eroded shore 1 is installed through the transverse shore protection structure 2 (figure 1). In this case, the installation angle depends on the width of the channel, the possible dump of the stream to the shore, and other morphological elements of the stream and channel. The length of the transverse transverse shore protection structures 2 and the distances between them are determined by the developed methodological recommendations. The transverse transverse shore protection structure 2 (FIG. 2) is assembled mechanically by attaching spacers 4 (FIG. 4) to the reinforcement 7 by connecting elements 9 and clamps 8, which form triangular trusses 3 (FIG. 5). The spacer element 4 consists of a metal-plastic pipe 5, in which there is a filler 6. Thus, by connecting the spacer elements 4 to the reinforcement 7 in series, the height of the through transverse shore protection structure 2 can be increased to any size. Moreover, the cross section of this structure is a triangular truss 3.

A flexible “apron” 10 is attached to the head of the through transverse shore protection structure 2, which is assembled into unchanging triangular shapes by twisting the wire ends 11 of the spacer elements 3 with special devices. The flexible “apron” 10 is a means of protecting against lowering when washing through the head of the through transverse shore protection structure 2. The flexible “apron” 10 can be installed horizontally if it is difficult to deepen it. The best option is to install a flexible "apron" 10 at an angle to the horizontal plane.

The flow of water flowing through the through transverse shore protection structure 2, reduces its speed, resulting in a decrease in the transporting ability of the stream and the loss of suspended sediment along the coast. To increase the efficiency of the through transverse shore protection structure 2, the frequency of installation of triangular trusses 3, or the building coefficient, increases from the end to the head.

Flexibility is a huge advantage of this structure, since it is in the water and it is impossible to avoid deformations of the bottom and base, and this will entail deformation of the structure, which is not dangerous for this type of coastal protection.

The proposed technical solution has several advantages over other previously known, the main of which is the speed of assembly.

The proposed technical solution is cheaper than known, while the durability of these structures is greater than previously known similar technical solutions.

In environmental terms, this is the most favorable solution to the problem of protecting coasts from erosion.

Information sources

1. A.c. 1461821 USSR, MKI E02D 17/20. A device for fastening the slope of an earth structure / Shkundin B.M. and Novozhilov A.P. (THE USSR). Application 03/04/87; publ. 02/28/89, bull. No. 8 (analog).

2. USSR author's certificate No. 1330242 A1, IPC Е02В 3/12 (prototype).

Claims (3)

1. A transverse transverse shore protection structure containing prefabricated elements assembled in a prism, characterized in that the elements are spacer, consist of a metal-plastic pipe in which the filler is located, and assembled into triangles by fixing clamps of spacer elements around the transverse reinforcement with the formation of nodes of a triangular prism , the cross section of which is a set of triangular trusses, and at the end of the structure there is a flexible apron assembled from spacers consisting of met lloplastikovoy tube within which are wires and filler, and collected into triangles by twisting the wire ends into components, wherein the triangular prism is set at an angle or transversely to the direction of flow of a single plane at the bottom of the river. 2. The construction according to claim 1, characterized in that the flexible apron is attached to the shore protection structure horizontally. 3. The construction according to claim 1, characterized in that the flexible apron is fixed to the shore protection structure at an acute angle to the horizontal plane.

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