SU787546A1 - Bridge pier and method of erecting same - Google Patents

Description

(54) BRIDGE SUPPORT AND METHOD FOR ITS CONSTRUCTION

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The invention relates to bridge construction and can be used in the construction of bridge piers on local roads at the intersection of small watercourses, marshy floodplains, ravines, loose sand, etc.

The known bridge support is a bridge, which includes a wooden frame with partitions filled with stone 1.

The lack of this support is in the lack of reliability of its work, due to possible significant subsidence of the support due to erosion of the soil under it, as well as in the considerable labor intensity of its construction, a large amount of timber and stone.

The most technical solution to this technical essence and the achieved effect is to support the bridge, which includes shells combined with a deadbolt with a filler laid in their cavity, the shell being made of reinforced concrete, and monolithic concrete 2 is used as a filler.

The lack of a known bridge support. A is relatively small the trinity resistance of the shells, which is caused by the release of heat during exothermic

hydration reactions of the cement-filler by rapid cooling of the surfaces of the support, as well as its material consumption and laboriousness are significant, due to the construction of precast concrete shells and the complexity of immersing them.

The purpose of the invention is to increase the fracture toughness, reduce bone material and the complexity of the construction of the support.

The goal is achieved by the fact that, in the bridge support, which includes shell shells combined with a deadbolt and aggregate complicated in their 15 cavities, each shell is provided with embedded soil layers paired with its bearing capacity and paired with pile-mounted rubber-cord pile of each other. rings covered outside with flame retardant composition with sandy seals,

-25 In this case, the aggregate can be made of monolithic concrete hardening in water, and recycled automobile tires of the same size can be used as rubber-cord rings.

In this case, in the method of raising the bridge support, which includes the installation of shells and laying in their fill cavity, prior to the installation of each shell, paired piles are driven in, and each shell is installed by alternately lowering the rubber-cord rings on the corresponding paired piles.

Dryness of the invention is illustrated in the drawing, which shows:

FIG. 1 shows the installation of paired piles with their driving into a carrying layer of soil; in fig. 2 - the shell of the bridge support after laying the filler in it, a longitudinal section; on fig.Z - the same view in the plan.

The bridge support contains shells united on top of a bolt (not shown) with shells installed in their cavities and stuffed into a layer of soil with carrying capacity paired with their 3 and filler 4 made of monolithic concrete hardening in water. The shell 1 is made of two twin piles enclosing 3 rubber-cord rings installed on each other and covered with a fire-resistant compound with sand carvings 5.

The erection of each shell of the support is carried out as follows.

First, the paired piles 3 are driven to a depth of 2 in a layer 2 of soil bearing bearing capacity. Then, alternately lowering the casing-forming 1 rubber-cord rings, which can be used recycled tires of the same size, onto the driven twin piles 3, are made alternately. The rubber-cord rings are lowered to the upper design mark. After that, a filler 4 of solid concrete hardening in water is placed into the cavity of the shell 1, without making the water pumping.

The use of the proposed support when building bridges on local roads provides increased support crack resistance due to the fact that rubber and casing rings have high thermal insulating properties, which is also very important when building supports in wetlands.

North due to the retention of cold inside the shell, preventing the thawing of the soil. In addition, a significant reduction in the material consumption of the supports is ensured by replacing the precast reinforced concrete of shells with rubber-cord rings made of worn-out automobile tires, as well as the labor intensity of installing shells.

Claims (4)

1. Bridge support, including shells combined with a bolt on top an aggregate laid in their cavity, characterized in that, in order to increase the crack resistance, reduce the material intensity and laboriousness of the erection of the support, each casing is provided with a layer of soil embedded in its cavity that has a carrying capacity and paired with it; installed double piles FRIEND on the other rubber-cord rings, covered outside with fire-resistant composition with sandy seals. 2. The bridge support is pop.1, characterized in that the aggregate is made of monolithic concrete hardening in water. 3. The bridge support according to claim 1, about tl and which, as rubber cord used recycled car pokryshki the same size. 4. A method of erecting a bridge support according to claim. This includes mounting the shells and laying the filler in their cavity, characterized in that Edited by mounting each casing. The driving of the coupled piles is carried out, and the installation of each casing is carried out by alternately lowering the rubber-cord rings on the corresponding paired piles. Sources of information taken into account in the examination 1. Gibshman E.E. and others. Bridges and structures on the roads. M., Transport, 1972, Part 1, pp. 158-160, ris.84. 2. Evgrafov G.K., Bogdanov N.N. Designing bridges. M., Transport, 1966, p. 406-407, fig. X.21 (prototype). .-H-oh .--.;. ;about - / ;. and; / l1; G; .// ./ / ./ / - / -: /, - j t -J Tt  -ij about -o: g