RU2365702C1 - Flexible protective concrete surfacing - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: invention relates to hydraulic engineering construction of flexible protective coatings of underwater surfaces of pipelines passages, slopes of banks and dykes against washing out by water flows and against damaged influences of carried by water flows items. Flexible protective concrete coatings contains concrete box units, implemented in the form of double-ended heavily truncated pyramids with common big rectangular base. Concrete box units are connected to each other row by row and in rows into single linen. Into protective coating there are introduced affixed to its sides concrete box units, implemented in top part in the form of heavily truncated pyramids, and in bottom part in the form of weakly truncated pyramids with common big rectangular base. Concrete box units of both kinds are connected to each other row by row and in rows by artificial ropes, which are monolithed in concrete box units. Length and number of rows of concrete box of one or other kind depends on dimensions and homogeneity of structure of protected surface.

EFFECT: invention provides reliable protection of surface with heterogeneous structure.

3 dwg

Description

The invention relates to hydraulic engineering and can be used to protect underwater crossings of pipelines from erosion by water flows and from the damaging effects of objects carried by water flows, as well as slopes, banks and dams (hereinafter referred to as a protected surface).

In the manufacture of flexible concrete coatings to protect pipelines laid along the bottom of reservoirs, conflicting requirements are imposed on them. On the one hand, such a protective coating should not damage the insulation of the pipeline (concrete blocks should have a large footprint), and on the other, have increased adhesion to bottom soils (concrete blocks should have a smaller foot area). To solve such problems, a coating is needed that would perform its functions equally effectively for the protected surface having a heterogeneous structure, for example, a pipeline transition and the bottom surface of solid soil.

It is known (analogue) a universal flexible concrete coating containing concrete blocks made in the form of bilateral truncated pyramids with smaller truncated bases, which are the ends of concrete blocks on which recesses are made, and cables connected in order and in rows along other bases of the pyramids (EP 0214753 18.03.87).

This well-known universal flexible concrete coating with high adhesion to the protected surface has a serious drawback - low adhesion to hard bottom soils. The recesses on the underside of the concrete blocks perform the functions assigned to them only if the protected underwater surface consists of relatively small fractions. If the protected underwater surface is rocky, then the recesses at the ends of the concrete blocks do not fulfill their functional purpose at all. In addition, the recesses are also made on the upper side of the concrete blocks, which creates an additional opportunity for objects passing by the flow to catch on the recesses and damage the integrity of the protective coating.

Thus, the above disadvantages make it impossible to use a universal flexible concrete coating for a protected surface having a heterogeneous structure.

The closest in technical essence to the claimed device is a flexible concrete coating to prevent soil erosion, containing concrete blocks made in the form of two-sided strongly truncated pyramids with a common large rectangular base and cables connected in order and in rows in a single canvas of concrete blocks (US 4375928 03/08/83).

With high adhesion to the protected surface of the transition of the pipeline without the threat of damage to the insulation, there is a serious disadvantage of low adhesion to hard bottom soils and limited flexibility.

Thus, the solvable task (technical result) is to protect the underwater passage of the pipeline with a flexible concrete coating having high adhesion to the surface to be protected without the threat of damage to the insulation with reliable adhesion to hard bottom soils and increased flexibility.

A new technical result is achieved due to the fact that in the known flexible concrete coating containing concrete blocks, interconnected in order and in rows in a single canvas of concrete blocks, made in the form of bilateral strongly truncated pyramids with a common large rectangular base, connected to its sides are introduced concrete blocks made in the upper part in the form of strongly truncated pyramids, and in the lower part in the form of slightly truncated pyramids with a common large rectangular base, and concrete blocks of both types are connected s with each other and in rows poryadno artificial ropes that are hardwired in concrete blocks.

The analysis of the prior art allows us to establish that the technical solution, characterized by a combination of features identical to all the features contained in the claims proposed by the applicant, is absent, which indicates compliance of the claimed invention with the eligibility criterion of “novelty”.

The search results for known solutions in this and related fields of technology in order to identify signs that match the excellent features of the claimed device showed that no solutions having signs matching its distinctive features were revealed in public sources of information, namely, the mixed construction of a flexible protective concrete coatings in the form of alternating rows of concrete blocks of two types, made in the form of bilateral strongly truncated pyramids with a common larger rectangular base (with a larger area supports) and made in the upper part in the form of strongly truncated pyramids, and in the lower part in the form of slightly truncated pyramids with a common larger rectangular base (with a smaller support area), moreover, concrete blocks of both types are interconnected in order and in rows in a single concrete canvas blocks with artificial ropes, which are monopolistic in concrete blocks.

The prior art also does not confirm the popularity of the influence of the distinctive features of the claimed device on the technical task - to protect the underwater passage of the pipeline with a flexible concrete coating having high adhesion to the protected surface with reliable adhesion to hard bottom soils and increased flexibility, the claimed invention meets the condition of "inventive step ".

The invention "Flexible protective concrete coating" is industrially applicable, since the set of characteristics characterizing it provides the possibility of its implementation, performance and reproducibility, and well-known materials and equipment can be used for its implementation. Concrete blocks made in the form of double-sided strongly truncated pyramids with a common large rectangular base have overall dimensions of 300 × 300 × 60 mm. Concrete blocks made in the upper part in the form of strongly truncated pyramids, and in the lower part in the form of slightly truncated pyramids with a common large rectangular base, have overall dimensions of 300 × 300 × 150 mm. Concrete blocks of both types are connected together in order and in rows - into a single canvas of concrete blocks with artificial ropes in the manufacturing process. Artificial ropes with a diameter of 8 to 25 mm made of polypropylene, polyamide or polyester with a breaking load of 1000 to 15000 kg / s are used as a connecting artificial rope. At the same time, the length and number of rows of concrete blocks of one and another type are determined depending on the size and uniformity of the structure of the protected surface.

The invention is illustrated by drawings, where figure 1 shows a section of a variant of the construction of a flexible protective concrete coating to protect the underwater passage of the pipeline, and figure 2 is a top view. Figure 3 shows an application of a flexible protective concrete coating to protect the underwater passage of the pipeline from erosion by water flows and from the damaging effects of objects carried by water flows.

A flexible protective concrete coating is made in the form of alternating rows of concrete blocks of two types: concrete blocks made in the form of bilateral strongly truncated pyramids with a common large rectangular base 1, and concrete blocks made in the upper part in the form of strongly truncated pyramids, and in the lower part in in the form of weakly truncated pyramids with a common large rectangular base 2, moreover, concrete blocks of both types are interconnected in order and in rows in a single canvas of concrete blocks with artificial ropes 3, which are monolithic s in concrete blocks. At the same time, in the peripheral blocks of the coating from the same artificial rope 3, mounting loops 4 are made for joining the coating fragments with each other. Thus, a flexible protective concrete coating is assembled from concrete blocks laced together by a flexible bond. One side of the flexible protective concrete coating "Side 1" is the top and is in contact with the aquatic environment. The other side of the “Side 2” flexible protective concrete coating is lower, with the lateral or external parts of the coating consisting of concrete blocks made in the upper part in the form of strongly truncated pyramids and in the lower part in the form of slightly truncated pyramids with a common large rectangular base 2 (with a smaller footprint), are embedded in the underwater surface of the bottom soil, and the inner or central one, consisting of concrete blocks made in the form of two-sided strongly truncated pyramids with a common large rectangular base 1 (with a larger bearing area), is laid on the surface of the underwater transition of the pipeline.

We will consider the operation of the Flexible Protective Concrete Coating device using an example of its construction to protect the underwater passage of the pipeline.

Fragments of a flexible protective concrete coating made in advance are transported to the installation area and, using a special frame-type traverse, grab by the mounting loops 4 and lowered to the installation site by the lifting mechanism so that “Side 2” of the flexible protective concrete coating is pressed against the protected underwater surface. Moreover, the coating fragments consisting of concrete blocks made in the upper part in the form of strongly truncated pyramids, and in the lower part in the form of slightly truncated pyramids with a common large rectangular base 2, are embedded in the underwater surface of the bottom soil, and in fragments consisting of concrete blocks made in the form of bilateral strongly truncated pyramids with a common large rectangular base 1 is laid on the surface of the underwater transition of the pipeline. Further, all fragments are joined together using mounting loops 4.

Thus, the construction of a flexible protective concrete coating in the form of alternating rows of concrete blocks of two types: made with a larger and smaller area of the support, as well as giving the coating additional flexibility, allows for reliable protection of the surface with a heterogeneous structure.

Claims (1)

A flexible protective concrete coating containing concrete blocks made in the form of two-sided strongly truncated pyramids with a common large rectangular base and interconnected in order and in rows in a single canvas of concrete blocks, characterized in that concrete blocks connected to its sides are made, made in the upper part in the form of strongly truncated pyramids, and in the lower part in the form of slightly truncated pyramids with a common large rectangular base, and the concrete blocks of both types are interconnected in order and in rows artificial ropes that are monolithic in concrete blocks.

Images