The method of reconstruction of the old bridge

 

The invention relates to the field of bridge construction. The method of reconstruction of the old bridge includes the construction of a new wider bridge along the longitudinal axis of the old bridge without destroying the latter with a gap relative to it and transfer the movement to the new bridge. What's new is thatduring the reconstruction of the old bridge, having historical or memorial value, the new bridge erected with a gap, at least on the deflection of the superstructure of the new bridge, but not less than 0.7 m longer than the old bridge, with full unloading of the old bridge, with the support of the new bridge erected outside the old bridge or between the retaining walls of the supports of the old bridge, and the superstructure of the new bridge perform braced, or guyed, or hanging, or arched. The technical result of the invention consists in the construction of the new bridge in place of the old, have historic value of the bridge without destroying the latter, the use of the existing direction of the street or road right-of-way, reducing labor and materialsfrom. 4 Il.

The invention relates to a bridge and can be used in the reconstruction of existing streets or roads in a whole is on demolition (destruction).

Known methods of reconstruction of old, including the memorial of historical value bridge in Moscow. For example, “...when the expansion of the river Yauza and the device through passages along its embankments,...” among the reconstructed bridges, two were saved semicircular vaults: Palace (1781) and zolotorogskii (1865). Reconstruction of the Palace bridge was the widening of the roadway from 15.5 to 23.5 m m by the device consoles. Survived also by five arches 8,5 m brick Zolotorojski bridge had three spans by 12.8 meters conversion... except rehabilitation of the old brickwork drainage, river... made two flights (instead of one), and riverside travel has built a new, but not next to the third, and beyond shore abutment. This was achieved straightening passage, savings on disassembly of the abutment and the preservation of the historic bridge (C. M. nadiin. The architecture of the bridges. Moscow, Stroyizdat. Popular science library student. 1989, pages 49-50).

The disadvantages of the known methods is the inability of their application for remoteipheader (especially the old, with the subsidence of the foundations of bridges, because they are based on the introduction of elements of “broadening” in the old, but shramet subjected to forced demolition, disassembly, leading to the loss of the historical (memorial) of the monument, which, as a rule, he is.

The closest to the essence and the achieved technical result is a method of reconstruction of the old bridge, which includes the construction of a new wider bridge along the longitudinal axis of the old bridge without destroying the latter with a gap relative to him and translation movements on the new bridge (see, for example, SU 1551767, 23.03.1990, E 01 D 21/00).

The disadvantages of analogue (prototype) are nerushimosti problems of preservation of the old, remoteipheader bridge, with historic (memorial) value, the loss of the monument's history, causing aesthetic damage to the city or the surrounding landscape, as the old bridge is served by the new constructions of the type “opaque” sarcophagus becomes unavailable for viewing.

The technical result is the construction of a new bridge in place of the old, historic (memorial) the value of the bridge without destroying the (forced disassembly) last, using the existing direction of the street or right-of-way of the road, the reduction of budgetary funds, time and effort to dismantle the old bridge and the development of new trails, preservation of the monument Isho business.

This technical result is achieved due to the fact, in the way of reconstruction of the old bridge, which includes the construction of a new wider bridge along the longitudinal axis of the old bridge without destroying the latter with a gap relative to it and transfer the movement to the new bridge, according to the invention during the reconstruction of the old bridge, having historical or memorial value, the new bridge erected with a gap, at least on the deflection of the superstructure of the new bridge, but not less than 0.7 m longer than the old bridge, with full unloading old bridge, with the support of the new bridge erected outside the old bridge or between the retaining walls of the supports of the old bridge, and the superstructure of the new bridge perform braced, or guyed, or hanging, or arched.

The application of the proposed method of reconstruction of the old bridge allows you to save the direction of the street or right-of-way of existing roads, construction of a new bridge in the same place, keep the old one and cut the budget on clearing space for new construction, including the use of the old bridge as scaffolding, to prevent aesthetic damage to the city or the surrounding landscape, to preserve the historical monument, the soda is but the implementation of the proposed method on the example of the small bridge, length up to 25 meters of the Facade.

In Fig.2 is a cross-section 1-1 in Fig.1;

In Fig.3 - implementation of the proposed method on the example of a large, longer than 25 m bridge. The facade.

In Fig.4 a cross-section 1-1 in Fig.3.

In both examples, the old bridge, which has one or several, mostly, vaulted spans 1, stone or clinker masonry Cabinet or retaining walls 2, 3 cones, approach embankments, a new bridge, consisting of foundations (piles) 4, with the nozzles 5, constructed outside of the path of the old bridge in the plan, and the superstructure, for example, beam 6 or 7 hanging design must have at least one flight that is equal to or greater than the length of the old bridge, to exclude not only support, but the touch of the latter, in this dimension of Gnnew increases against the Gwiththe old bridge at the required value.

The method of reconstruction of the old bridge as follows.

The choice of design of the new bridge should be preceded by a thorough examination of the old bridge 1. The construction of a new wider bridge perform on the longitudinal axis of the old bridge 1 without destroying the latter with a gap relative to it. Translate the movement to the new bridge. When reconstruction for the full design, single-span 4, 5, 6, with a gap, at least on the deflection of the superstructure of the new bridge, but not less than 0.7 m longer than the old bridge 1, with full unloading old bridge 1. While the superstructure of the new bridge perform beam 6, or suspension, or a suspension of 7, or arched. Supports 4 new bridge submersible drilling method, erected outside the old bridge 1 or between the retaining walls 2 poles 4 old bridge 1. The nozzles 5 are elongated, consoles, speakers dimensions of an old bridge 2 to the desired value. The erection of the girders of the superstructure 6 is mobile cranes, usually from the ground, scaffolding or embankment approaches 3, and if not possible, give preference to monolithic structures or light modular metal products, for example, hanging 7 system. All other work - her mound approaches 3, the device of the roadway and road bridge fencing is manufactured in the usual manner, on the basis of the target technology. Provide wastewater beyond the old 1 bridge.

The application of the proposed method will allow you to build a new bridge and to prevent the forced destruction (demolition) old bridge 1, 2, will retain the acceptance of buildings 4, 5, 6 and 7 in General, to avoid additional costs for demolition of the old bridge 1 and 2 and use the direction of the street or right-of-way of existing roads.

Claims

The method of reconstruction of the old bridge, which includes the construction of a new wider bridge along the longitudinal axis of the old bridge without destroying the latter with a gap relative to it and transfer the movement to the new bridge, characterized in that theduring the reconstruction of the old bridge, having historical or memorial value, the new bridge erected with a gap, at least on the deflection of the superstructure of the new bridge, but not less than 0.7 m longer than the old bridge, with full unloading of the old bridge, with the support of the new bridge erected outside the old bridge or between the retaining walls of the supports of the old bridge, and the superstructure of the new bridge perform braced, or guyed, or hanging, or arched.

 

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