RU2257442C1 - Bridge and method of its building - Google Patents

Abstract

FIELD: bridges, particularly for water crossing and erection technique for bridge building.

SUBSTANCE: method for bridge building involves forming filled support areas for building slipways adapted for assembling large sections of bridge span structure, wherein support areas are arranged along borders of water barrier to be crossed, for instance along banks of river or slopes of ravine, and extends beyond the borders, wherein bridge span structure is formed of single-way panel; arranging each bridge span structure by means of sliding carriers on support member rotated relative vertical axis and located on the support area, wherein support member has previously increased load-bearing capacity; turning sliding carriers by hydraulic jacks relative support members, wherein sliding carriers hold large sections having T-shaped cross-sections so that longitudinal axes thereof coincide one with another in plane and a gap of uniform width is formed between edges thereof facing each other; installing insertion panel in the gap; connecting the insertion panel with T-shaped sections to form single span structure. Projections of T-shaped sections facing each other are formed to provide greater moment in comparison with that created by opposite projections and the moment is compensated before sliding carrier rotation, for instance by counterweights or jacks.

EFFECT: increased building speed and reliability.

5 cl, 2 dwg

Description

The invention relates to the construction of bridges, preferably constructed through water barriers, and to the technology for the construction of such bridges.

A well-known arch bridge with riding on top, including a foundation, a composite structure, consisting of blocks of semi-arches with their fastening elements on the foundation and embedded parts, a surface structure in the form of jaw walls and soil backfill, each block of the semi-arches is made with the possibility of its rotation and fixing when mounting relative to the foundation, and the foundation is equipped with a stop, and the lower inner face of the semi-arch block interacting with it has the shape of a cylindrical surface, while mounting is provided in the castle part of the half-arches the main gap, and the ends of the semi-arches in the castle part are motionlessly interconnected (RU No. 2171330 C1, E 01 D 4/00, 2001).

There is also known a method of erecting an arch bridge with riding on top, including the erection of foundations, installation of a consolidated structure, consisting of blocks of semi-arches with elements of their fastening on the foundation and embedded parts, a superstructure, consisting of jaw walls and soil backfill, in which before the final interconnection of the blocks a semi-arch with a foundation reduce their ends in the castle part to the design value by turning the semi-arch block on a cylindrical surface, its lower face and subsequent fixing by means of a bolted connection of the heel of the semi-arch with the foundation bracket, aligning the ends of the blocks of the semi-arches in the castle part of the suspended mounting beam and carry out a fixed relationship between the ends of the blocks of the semi-arches of the castle part (RU No. 2171330 C1, E 01 D 4/00, 2001).

The closest known method is the construction of a bridge and a bridge constructed in such a way that along the edges of an existing obstacle blocked by a bridge, displaced beyond their contour, for example, along the bank of a river or along the slopes of a ravine, preferably bulk embankments are used to accommodate slipways for enlarged assembly of sections a span formed by an orthotropic plate placed by means of a slide each on a support rotatable relative to the vertical axis mounted on a support area e in its area with pre-enhanced bearing capacity, then by means of hydraulic jacks, the slide is rotated with enlarged T-sections in each longitudinal section assembled on an appropriate support until they coincide in terms of the directions of their longitudinal axes and the formation of equal width widths between their facing each other the gap in which the insert plate is placed, connected to the T-shaped sections to form a single span (http://www.mo 18.ru/ - "Span of pedestrian walkways the one in the Cathedral of Christ the Savior through the Moskva river, "posted on the website of the Moscow territorial company" Mostootryad 18 "of" Mostrotrest "07. 2004).

The known solution to ensure the reliability of the work performed requires a significant number of reconciliation operations and control measurements during the assembly of the T-shaped sections and in the process of their rotation, which is due to the inherent in their design to one degree or another unbalance of the shoulders of the T-shaped sections, caused, for example asymmetrical design, different angles of inclination of the shoulders of the T-shaped sections and other design parameters, to take into account all of which is practically not possible.

The objective of the present invention is to intensify and increase the reliability of the work.

This is achieved by the fact that in the method of constructing a bridge along the edges of an existing obstacle blocked by a bridge with displacement beyond their contour, for example, along the bank of a river or along the slopes of a ravine, preferably bulk support platforms are arranged to accommodate slipways for enlarged assembly of sections of a span formed by an orthotropic plate placed by each slide on a support rotatable relative to the vertical axis, mounted on said support platform in its area with a pre-reinforced carrier sp in turn, then by means of hydraulic jacks, the slide is rotated with enlarged T-shaped sections assembled on a respective support in a longitudinal section to a coincidence in terms of the directions of their longitudinal axes and the formation of an equal width gap between their facing each other into which the insert plate is placed connected to the T-shaped sections to form a single span, while the branches of the T-shaped sections facing each other fulfill the condition of providing them with pain moreover, than their opposite branches create, the moment which, before the turn of the sections begins, is compensated, for example, by balances and / or jacks. In this case, the rotation of the T-shaped sections in the longitudinal section is carried out in one or in opposite directions relative to the vertical axis or inclined to the vertical axis, which makes an angle of up to 8 ° with it. The bridge thus constructed is at least a two-leg span structure with an orthotropic plate having in the central part a transverse insert in the form of a section of said orthotropic plate.

The invention is illustrated by drawings, where

- figure 1 presents a front view of the bridge, constructed by the method of turning having counterweights of its T-shaped sections in a longitudinal section;

- figure 2 is a diagram of the rotation of the T-shaped in the longitudinal section of the bridge sections.

When implementing the method of constructing a bridge along the edges of an existing obstacle blocked by a bridge with a displacement (in one direction or another) beyond their contour, for example, along the banks of the Moscow River (Fig. 1) or along the slopes of a ravine, bulk (soil, gravel, or concrete blocks) are preferably arranged supporting platforms 1. On the supporting platforms 1 place the stocks for enlarged assembly of prefabricated T-shaped elements in the longitudinal section of the sections 2 of the span, formed by an orthotropic plate 3 placed by means of a slide waiting on a support 4, rotatable relative to the vertical axis, mounted on said support platform 1 in its area with previously reinforced (concreting, injection or other methods) bearing capacity. Then, by means of hydraulic jacks (not shown), the inventory slide is rotated with enlarged T-sections in each longitudinal section, assembled on a respective support 1, in sections 2 until they coincide in terms of the directions of their longitudinal axes and the formation of equal gap widths between their facing each other. In the specified gap is placed the plate-insert 5 connected to the T-shaped sections 2 to form a single span. In this case, the branches of the T-shaped sections 2 facing towards each other are fulfilled from the condition of providing them with more than their opposite branches create a moment (tipping), which is compensated, for example, by balances 6 and / or jacks, before the sections are turned. In this case, the rotation (Fig. 2) of the T-shaped sections in the longitudinal section 2 is performed in one or in opposite directions relative to the vertical or inclined axis to the vertical axis, which makes an angle of up to 8 ° with it, which intensifies the rotation process and ensures the self-installation of the branches of sections 2 in design position or in a position close to it. In this case, the hydraulic jacks act as dampers at a certain turning section. The bridge constructed in this way is assembled in a period not exceeding 8-12 hours, and is at least a two-leg span structure with an orthotropic plate 3, having in the central part a transverse insert plate 5 in the form of a section of the specified orthotropic plate.

Claims (5)

1. A method of constructing a bridge in which, along the edges of an existing obstacle blocked by it, shifted beyond their contour, for example, along a river bank or along the slopes of a ravine, they arrange, preferably bulk, support platforms for placing slipways for enlarged assembly of sections of the span formed by an orthotropic plate, placed by means of a slide, each on a support rotatable relative to the vertical axis, mounted on said support platform in its area with previously reinforced bearing capacity, m by means of hydraulic jacks, the slide is rotated with the sections assembled, each on the corresponding support, enlarged by T-sections in a longitudinal section, to coincide in terms of the directions of their longitudinal axes and the formation of an equal width gap between their facing each other into which the insert plate is placed connected to the T-shaped sections to form a single span, while the branches of the T-shaped sections facing each other fulfill the condition of providing them with more than dissolved their opposing branches moment that prior to turning sections compensate, for example, counterweights and / or jacks. 2. The method of constructing a bridge according to claim 1, in which the rotation of the T-shaped in the longitudinal section of the sections is made in one direction. 3. The method of constructing a bridge according to claim 1, in which the rotation of the T-shaped in the longitudinal section of the sections is carried out in opposite directions. 4. The method of constructing a bridge according to any one of claims 1 to 3, in which the rotation of the T-shaped in the longitudinal section of the sections is relative to the vertical axis or inclined to the vertical axis, making up to 8 ° with it. 5. A bridge constructed by the method according to any one of claims 1 to 4 and representing at least a two-leg span structure with a supporting diaphragm and an orthotropic plate having in the central part a transverse insert in the form of a section of the specified orthotropic plate.

Images