RU2737746C1 - Method to deliver superstructure of support using soft pontoons - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: invention relates to bridge engineering, namely to construction of foundations of short-term bridges. Method of supporting superstructure delivery to installation site using soft pontoons consists in that delivery of superstructure is carried out by imparting positive buoyancy to it, for this purpose cylindrical soft pontoons are attached uniformly to one side of the superstructure, air is supplied into them, the superstructure is switched to horizontal position and installed by pontoons on water, then it is transported to the place of installation.

EFFECT: invention can be used in reconstruction of railway bridges along old axis and construction of collapsible bridge crossings through water obstacles.

1 cl, 2 dwg

Description

The present invention relates to the field of bridge building, in particular to the construction of foundations for short-term bridges and can be used in the restoration of railway bridges along the old axis and the construction of collapsible bridge crossings over water obstacles.

From the existing level of technology, there is a method of delivery of tower structures "Inventory bridge building property (IMI-60)" (1. Departmental building codes VSN 136-78 "Instructions for the design of auxiliary structures and devices for the construction of bridges. Approved by order of the Main Technical Department of the Ministry of Transport Construction from January 16, 1978 No. 2. Appendix No. 4), using standard ferry facilities (inventory pontoons). This method involves loading the support superstructure from the IMI-60 property onto a pontoon (standard ferry facility), its delivery to the installation site and installation of the superstructure in the design position using a floating lifting device.

The disadvantage of this method is the low rate of installation of support superstructures (Fig. 1, pos. 1) and the construction of the entire bridge due to the limited number of ferry facilities in the state of bridge railway battalions, which necessitates the alternate installation of superstructures.

The problem to be solved by the claimed invention is the possibility of delivering the support superstructure (Fig. 1, item 1) to the installation site without the use of standard transportation means.

The task of delivering the support superstructure (Fig. 1, pos. 1) to the installation site is solved due to the fact that the support superstructure (Fig. 1, pos. 1) is not installed on the pontoon, and delivery to the place of installation of the superstructure is made by giving it positive buoyancy, which the support superstructure acquires by uniformly attaching the required number of cylindrical soft pontoons to one of its sides (Fig. 1, pos. 2). The number of cylindrical soft pontoons (Fig. 1, pos. 2) and their volume in the inflated state should ensure the positive buoyancy of the support superstructure.

The technical result solved by the given set of features is:

- reduction of time for the construction of a railway bridge due to the possibility of simultaneous delivery of superstructures of supports (Fig. 1, pos. 1) to the installation site;

- reduction of time when dismantling the bridge;

- reducing the visibility of the transported structure for the enemy by eliminating the area of the crossing means;

- the possibility of masking the support delivered to the installation site (Fig. 1, pos. 1) by transferring it to an underwater state.

The essence of the invention is illustrated by drawings, which show: Figure 1 shows the procedure for installing the superstructure from the property IMI-60 in the design position:

pos. 1 - support superstructure made of IMI-60 property;

pos. 2 - cylindrical soft pontoons;

pos. 3 - air ducts;

pos. 4 - pile foundation.

Figure 2 shows a way to mask the superstructure by transferring it to a submerged position:

pos. 5 - displacer.

The invention is carried out as follows.

Before transporting the support superstructure to the installation site using the proposed method, cylindrical soft pontoons are evenly attached to the support superstructure (Fig. 1, pos. 1) on one side (Fig. 1, pos. 2). Air is supplied through the air ducts (Fig. 1, item 3) into the cylindrical soft pontoons (Fig. 1, item 2). The assembled support superstructure, after pumping the pontoons with a lifting device, is transferred to a horizontal position by cylindrical soft pontoons (Fig. 1, pos. 2) down and installed on the water.

The support superstructure (Fig. 1, pos. 1) is transported by boat or pusher against the current to the installation site. Installation on a pile foundation (Fig. 1, pos. 4) is carried out using a floating lifting device.

After installing the support superstructure (Fig. 1, pos. 1), the air from the cylindrical soft pontoons (Fig. 1, pos. 2) is lowered. In the future, to reduce the time for dismantling the bridge, soft pontoons can be used during dismantling.

To transfer the superstructure to a submerged position after its delivery to the installation site, the air from the cylindrical soft pontoons (Fig. 1, pos. 2) is vented. The ends of the air ducts (Fig. 1, pos. 3) are assembled into a bundle and attached to the displacer (Fig. 2, pos. 5) for the possibility of rapid air supply when the superstructure ascends.

Thus, the proposed method allowed:

- to reduce the time for the construction of a railway bridge due to the possibility of simultaneous delivery of the superstructures of the supports (Fig. 1, pos. 1) to the installation site and during the delivery of the superstructures to the bank, dismantling of the bridge;

- to reduce the visibility of the transported structure for the enemy by eliminating the area of the crossing means;

- to mask the superstructure of the supports delivered to the installation site (Fig. 1, pos. 1) by transferring it to an underwater state.

Used sources

1. Departmental building codes BCH 136-78 “Instructions for the design of auxiliary structures and devices for the construction of bridges. Approved by the order of the Main Technical Department of the Ministry of Transport Construction dated January 16, 1978 No. 2. Appendix No. 4.

Claims (1)

A method of delivering the support superstructure to the installation site using soft pontoons, characterized by the fact that the superstructure is delivered by giving it positive buoyancy; for this purpose, cylindrical soft pontoons are attached uniformly to one side of the superstructure, air is supplied to them, the superstructure is placed in a horizontal position and installed pontoons into the water, then transported to the installation site.

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