RU191864U1 - HEAD TELESCOPIC SCREW PILING FROM GLASS PIPES FOR BUSH INVENTORY ICE CUTTER - Google Patents

Abstract

The utility model relates to the field of construction of temporary pile foundations. In particular, it can be used to create cluster inventory ice-breakers designed to protect the supports of collapsible road bridges (AWS) constructed through rivers with weak and medium ice drifts with an ice thickness of up to 1.0 m and various water depths with a high ice horizon. The technical task of PM is the development of such a design of a tubular pile for cluster inventory ice cutters to protect the supports of the AWP, which will be suitable for multiple use in river channels with different water depths at weak and medium ice drifts, and will also have high resistance to corrosion. This technical problem is solved due to the fact that the head telescopic screw pile made of fiberglass pipes for cluster inventory ice cutting consists in height of two - lower and upper - parts, characterized in that the smooth trunk of the lower parts has screw blades, and the trunk of the upper part, the inner diameter of which is slightly larger than the outer diameter of the lower part, is freely mounted on the trunk of the lower part of the pile; vertical angles are rigidly fixed on the outer surface of the barrel of the upper part for attaching to the piles of the boards of the side sheathing of the ice cutter and the cutting corner; through holes of the same diameter are arranged in the trunks of both parts of the pile to accommodate the bearing pin, which is inserted into the matching holes of both parts to combine them into the rigid structure of the pile of the required length with a high ice horizon.

Description

A utility model (hereinafter referred to as PM) relates to the field of construction of temporary pile foundations. In particular, it can be used for the construction of cluster inventory ice-breakers designed to protect the supports of collapsible road bridges (AWS) constructed across rivers with weak and medium ice drifts with an ice thickness of up to 1.0 m and various water depths with a high ice horizon .

Known designs of inventory cluster ice-cutters, including metal ones, for protecting arm supports, schemes of which are placed in the “Album of foundations of supports for road collapsible bridges (AWS)” by M. VI. 2003 [1].

This album contains structural diagrams of cluster ice-cutters with foundations only from driven piles, including tubular ones (sheets 24-26, pages 137-139) [1]. The designs of the tubular piles themselves of different diameters are shown on sheet 32, p. 145 [1].

The main disadvantages of the piles indicated in the album are the following.

Firstly, if it is necessary to extend the piles, it is necessary to dock an additional link from the pipe with the existing one. The album recommends doing this rigidly with overlays that are welded to the ends of the pipes to be joined by continuous seams (sheet. 32, p. 145) [1].

Secondly, the disadvantage of all of these piles is their immersion driving. If necessary, reuse will require their extraction, which, as a rule, causes significant labor and time costs, and also requires additional special equipment (for example, jacks). Therefore, for this reason, piles are often cut off above the bottom mark, leaving part (sometimes significant) of pipes in the ground. It turns out that in each case, it is necessary to design and produce, as a rule, single-use piles, which leads to inefficient use of pipe material, to unnecessary labor, time and financial costs.

A known design of an inventory of metal screw piles from a set of SARM-M ("The average road collapsible bridge modernized" (SARM-M). M. VI. 2002.) [2]. Similar piling designs are part of the universal pile-screw foundations of the sets of a large road collapsible bridge (BARM) [3], cable-stayed-beam bridge bridge (MVB) [4] and universal bridge structures of UMK [5].

The disadvantage of all piles described above is also their high corrosivity, because they are made of steel pipes and are constantly in the water of the riverbeds. And corrosion, as you know, reduces the life of steel products, including steel tubular piles.

Also known is the design of a “helical telescopic pile made of fiberglass pipes with a head restraint” (patent for PM No. 187577 published March 12, 2019, Bull. No. 8) [6].

The design feature of this pile is that it consists of two parts in height. At the same time, the upper part (insert) is freely placed inside the barrel (pipe) of the lower part having helical blades, and the support cap is laid on the head of the insert for positioning an inclined cutting edge of a wedge-shaped ice cutter on it (patent for PM No. 187393, published on 03/04/2019. . No. 7) [7].

It is advisable to use such a telescopic pile for the construction of wedge-shaped (tent) ice cutters, in which the pile heads should not rise above the ribs and the skin of the ice cutter tent. Otherwise, the ice floes will hit the tips of the piles, which can lead to damage and even destruction of ice cutters and supports of the AWP, and, consequently, damage to sections of the bridge located in river beds.

The technical task of PM is the development of such a design of a tubular pile for cluster inventory ice cutters to protect AWP supports, which will be suitable for multiple use in river channels with different water depths with weak and medium ice drifts, and will also have high corrosion resistance.

This technical problem is solved due to the fact that the head telescopic screw pile made of fiberglass pipes for cluster inventory ice cutting consists in height of two - lower and upper - parts, characterized in that the smooth trunk of the lower part has screw blades, and the trunk of the upper part, internal whose diameter is slightly larger than the outer diameter of the lower part, freely mounted on the trunk of the lower part of the pile; vertical angles are rigidly fixed on the outer surface of the barrel of the upper part for attaching to the piles of the boards of the side sheathing of the ice cutter and the cutting corner; through holes of the same diameter are arranged in the trunks of both parts of the pile to accommodate the bearing pin, which is inserted into the matching holes of both parts to combine them into the rigid structure of the pile of the required length with a high ice horizon.

The design of the PM is shown in the figure, where it is indicated: FIG. 1 - general view of the pile; FIG. 2 - view of the lower (screw) part of the pile; FIG. 3 - view of the upper (bearing) part of the pile; FIG. 4 - section of the pile; FIG. 5 - connecting sleeve; FIG. 6 - section of the upper part of the pile; pos. 1 - the upper part of the pile; pos. 2 - the lower part of the pile; pos. 3 - holes for the pin; pos. 4 - screw blade; pos. 5 - bearing corner; pos. 6 - holes for bolts; pos. 7 - bolts - position fixers of the ring of the thrust frame of the ice cutter (not shown in the figure); pos. 8 - bearing pin; pos. 9 - a safety pin; pos. 10 - cutting corner; pos. 11 - overlays; pos. 12 - line of the weld; pos.13 - connecting sleeve.

The implementation of the PM is carried out in the following sequence outlined in the project work (NDP). As a rule, all elements of a pile are manufactured at a factory where elements of that AWP are manufactured, the set of which will include a collapsible cluster ice-cutter (for example, SARM-M, BARM, etc.).

The finished pile elements after the control assembly at the plant or from the warehouse are transported to the place of construction of the ice cutter. It is advisable to arrange ice cutters at the same time as the device supports the bridge using the same technique.

The lower (screw) part of the piles 2 is screwed with the UZS installations. In the summer, the UZS is placed on a die. Piles to the USS are delivered by ferry. The immersion of piles in the ground should be at the calculated depth. In winter, with sufficient ice thickness, work should be done with ice.

Then the upper (bearing) part of the pile 1 is lowered to the lower 2 by a crane and held until the diver inserts the pin 8 with the pin 9 into the combined holes 3 of both parts of the pile. If necessary, the length of the pile is increased by lengthening only the trunks of the upper part 1, using additional links and connecting sleeves (Fig. 5), manufactured at the factory from pipes of the same diameter as the lower part 2 of the pile. Four plates 11 of a thickness of 5-6 mm are welded to the surface of the connecting sleeve. Their purpose is to reduce the size of the internal gap between the barrel of part 1 and the surface of the connecting sleeve 13 (Fig. 4). On the outer protruding from part 1 half of the connecting sleeve 13 there is a through hole 3 for mounting the connection of the two upper parts 1 of the piles with a pin 8 (Fig. 5). The number of additional links of the upper parts 1 of the pile, interconnected by sleeves 13 and pins 8, is determined by the required length of the outer part of the pile, depending on the depth of water with a horizon of high ice drift (GVL).

Another technology is also possible for screwing, assembling and increasing the length of the pile.

Thus, the proposed PM provides the manufacture of head telescopic screw piles from fiberglass pipes for cluster inventory ice cutters constructed in river channels with weak and medium ice drifts and various water depths with a high ice drift horizon. The utility model can also be used in the construction of chambers, including on rivers, where, as a rule, there are no ice drifts. It also provides increased corrosion resistance of piles.

List of sources used

1. An album of the foundations of supports for road collapsible bridges (AWP). M. VI. 2003.

2. The average road collapsible bridge modernized (SARM-M). Technical description and instruction manual. M. VI. 2002.

3. Guidance on the material part and operation of the BARM large road collapsible bridge. M. VI. 1975.

4. Road-stayed cable-stayed bridge (MVB). Technical description and instruction manual. M. VI. 2001.

5. Universal bridge structures (UMK). Technical description and instruction manual. M. VI. 2003.

6. Helical telescopic pile made of fiberglass pipes with a support headrest. Utility Model Patent No. 187577, published March 12, 2019. Bull. No. 8.

7. Telescopic collapsible wedge-shaped ice cutter. Utility Model Patent No. 187393, published March 4, 2019. Bull. Number 7.

Claims (1)

A head telescopic screw pile made of fiberglass pipes for cluster inventory ice cutting, consisting of two lower and upper parts in height, characterized in that the smooth trunk of the lower part has helical blades and the barrel of the upper part, whose inner diameter is slightly larger than the outer diameter of the lower part freely mounted on the trunk of the bottom of the pile; vertical angles are rigidly fixed on the outer surface of the barrel of the upper part for attaching to the piles of the boards of the side sheathing of the ice cutter and the cutting corner; through holes of the same diameter are arranged in the trunks of both parts of the pile to accommodate the bearing pin, which is inserted into the matching holes of both parts to combine them into the rigid structure of the pile of the required length.

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