RU2279504C2 - Culvert structure - Google Patents

Abstract

FIELD: draining the sub-base of roads or ballastway of railways by trenches, culverts, or conduits.

SUBSTANCE: culvert structure comprises foundation, side walls, bottom part, spanning arches and ground filling material. Each side wall is made as a single whole with foundation and is formed as reinforced concrete unit having orifices in bottom part thereof. The orifices are symmetric about central foundation part and are filled with crushed stone or ground filling material when bottom foundation part is located under ground filling material. Reinforced concrete units and spanning arches are pulled together by prestressed reinforcement rods extending along the structure.

EFFECT: simplified structure, increased operational reliability due to increased structural strength.

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Description

The invention relates to the field of road construction, namely, culverts.

Known construction for water passage / RF patent No. 2181812, MKI 7 E 01 F 5/00, publ. 04/27/2002, bull. No. 12 /, containing pile foundation, side walls of gabion or Reno mattress, bottom part of Reno mattress or rubble stone, arched ceiling blocks, soil backfill. Gabions or mattresses of each side wall are interconnected with gabions of inlet and outlet heads.

The disadvantage of this design is the complexity of manufacturing, as you have to hammer piles.

The objective of the invention is to simplify the design, increase operational reliability by increasing the rigidity of the structure.

The problem is achieved in that in a culvert with a foundation, side walls, a bottom, floor arches, a backfill, each side wall is made in one piece with a foundation in the form of a reinforced concrete block having holes in the bottom located symmetrically to the central part of the foundation and filled rubble stone, and the reinforced concrete blocks themselves, as well as the floor arches, are pulled together by tensioned reinforcement bars located along the structure.

In addition, reinforced concrete blocks, consisting of part of the foundation and one side wall, can be located under soil backfill.

Each side wall of the culvert is made integral with the foundation and is a reinforced concrete block with holes in the bottom that serve to fill with rubble stone, and the height of the side walls of the blocks on which the arched arch is installed is selected from the necessary culvert.

The arch of the structure is made of separate reinforced concrete arches, which are part of a circle or ellipse. Reinforced concrete blocks, like reinforced concrete arches, are pulled together by tensile reinforcement bars along the structure. The use of thickened side walls, made at the same time with the foundation, allows to reduce labor costs for manufacturing and installation, to increase the reliability of the bridge by reducing joints in the structure, and the use of tensed building reinforcement for bonding reinforced concrete blocks and arches can improve the operational properties of the bridge, increasing its rigidity. The use of reinforced concrete blocks with holes in the bottom allows you to restore the bottom of the bridge in case of erosion by pouring new rubble stone. In addition, the side walls, made at the same time with the foundation, serve as a tightening of the structure (figure 1) or perceive the spacer (figure 2).

The invention is presented in the drawings:

figure 1 - culvert with reinforced concrete blocks in the bottom;

figure 2 - culvert with reinforced concrete blocks under bulk soil;

figure 3 - connection diagram of reinforced concrete blocks and arches of tensile bar reinforcement along the structure;

figure 4 - layout of holes in the bottom of reinforced concrete blocks.

The culvert includes a foundation and side walls, made at the same time in the form of reinforced concrete blocks 1 with holes 2 in the bottom, which are filled with rubble stone (figure 1). The height of the side walls and the foundation of the reinforced concrete block 1 is selected based on the necessary culvert capacity of the bridge. Reinforced concrete arches of the ceiling 3 are installed on the side walls of the reinforced concrete block, in cross section representing part of a circle or ellipse. Reinforced concrete blocks 1, as well as reinforced concrete arches 3, are pulled together to increase the rigidity of the structure between themselves by tensile rod reinforcement 4 along the structure.

On top of the arches of overlap 3, a soil backfill 5 is placed on which pavement 6 is installed.

The bottom part of the culvert, located under the reinforced concrete blocks 1, is made in the required profile with rubble stone 7.

In Fig.2, the foundation of reinforced concrete blocks 1 consists of two identical parts containing one wall, made integral with the foundation, and an opening in the bottom of the foundation. This bottom part of the foundation is located under the soil filling 5.

The culvert is constructed in the following order.

They clear the site, fill the riverbed with rubble stone 7, install reinforced concrete blocks 1, then install reinforced concrete floor arches 3 on them, make joints, tighten the blocks with tensioned reinforcement 4 along the entire structure, make waterproofing of the filled surfaces, perform soil filling 5 and the road device clothes 6, stack slab strengthening slabs 8.

The technical result during the operation of this facility is:

1. The ability to restore the bottom cover quickly and quickly, with minimal labor;

2. The absence of cracks in the joints of the structure due to the tightening of the parts of the bridge by tensile rod reinforcement. During operation for three years, a bridge pulled together by tensioned rod reinforcement showed no cracks in the joints of the structure, unlike similar bridges built without the use of tensioned rod reinforcement, in which cracks appeared after the first year of operation.

Such culverts can find wide application in the arrangement of roads and their passage through small streams instead of small bridges.

Claims (1)

A culvert containing a foundation, side walls, bottom part, floor arches, soil backfill, characterized in that each side wall is made integral with the foundation in the form of a reinforced concrete block having holes in the bottom part symmetrically located in the central part of the foundation and filled with rubble stone or with backfill when the bottom part of the foundation is located under the backfill, while reinforced concrete blocks and floor arches are pulled together by tensioned reinforcement, located constant along the structure.

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