SU1435677A1 - Bridge - Google Patents

Description

(21) 4232447 / 29-33

(22) 04/21/87

(46) 07.11,88. № 41

(71) The State Design and Research Institute for the Design of Large Bridges Exploration of Hybridtransmost and the Central Research and Design Institute of Building Metal Structures named after NP Melnikov

(72) V.S.Dankov and V.M.Datskovsky 53) 624.21.093 (088.8)

(56) USSR Copyright Certificate No. 533697, cl. E 01 D 1/00, 1972.

Express information. Artificial structures on the roads, 1973, issue 18, p.18-24.

(54) BRIDGE

(57) The invention relates to the construction of buildings and can be used in the erection and strengthening of prefabricated reinforced concrete bridges.

with split and temperature nera-. carved span structures. The purpose of the invention is to reduce the labor intensity of installation and increase the operational reliability of the bridge. The bridge includes shore supports 1 with a cabinet wall 2, a span structure 3 and elastic elements that interact with the ends of the span and the cabinet walls of the Relevant shore supports. The elastic element is made of a composite located behind. the cabinet wall of the anchor plate-4 with the stop tip 5 fixed on it, which interacts with the corresponding end of the span in the level of its stretched fiber, and the links of extension 6 fixed on the anchor plate and the cabinet wall parallel to the neutral axis of the span Cabinet wall is made with a through hole through which the thrust tip is passed 5. 5 inc.

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Nvit1 a. / 1na axis

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The invention relates to my CTpoeHvno and can be used in the erection and reinforcement of prefabricated reinforced concrete bridges with split and temperature and non-cut span structures.

The purpose of the invention is to reduce the labor intensity of installation and increase the operational reliability of the bridge.

The drawing shows a bridge, a longitudinal section.

The bridge includes shore supports 1 with a cupboard wall 2, a span structure 3 and elastic elements that interact with the ends of the span structure and the cupboard walls of the respective shore supports. The elastic element is made up of an anchor plate 4 located behind the cabinet wall with a resistant tip 5 fixed on it, interacting with the corresponding end of the span in the level of its stretch fiber, and 6 stretch links fixed on the anchor the slab and the cabinet wall are parallel to the neutral axis of the span, and the cabinet wall is provided with a through hole through which the stop tip 5 is passed.

The installation of the bridge is carried out as follows.

Through the supporting parts 7, the span structure 3 is installed on the axial mounts, the thrust tip 5 through the cutout in the cupboard wall 2 of the support 1 is abutted against the end of the span structure 3 in the stretched fiber zone (parallel-;. the tip 5 of the anchor plate 4 and pull it to the scaffold wall 2 by stretching 6 links with a fixed initial tension force to ensure that the links of the stretch are included in the work, as well as partial reception or constant load.

The design works as follows.

When loaded with a temporary load, the span structure 3 bends, its ends turn and stretch the thrust tips 5, they hold the links 6 through the anchor plate 4, which adds to the lower fiber.

0

15

20:

five

0

five

40

45

50

55

stretched from temporary loads, the force of reduction. The stiffness of the bonds 6 is selected mainly from the condition of the necessary compression of the stretched fiber of the beams of the span 3 to perceive the temporary load.

The described structure of the elastic elements can be used both in the construction and in the reinforcement of the beams of the operated bridge span. In this case, the installation of elastic elements can be carried out regardless of the size of the temperature joints at the time of installation, and the need for tightening of the stretch bonds can be carried out from the outside of the temperature weld.

I -

Due to almost the same

the coefficient of linear expansion of the material of the span and the tensile bond in the form of tg, there is no effect on the basis of the load from the thermal expansion of the beams of the span.

Claims (1)

The use of the proposed bridge design reduces the labor intensity of installation and increases the operational efficiency of the installation. Invention Formula A bridge including shore supports with a cupboard wall, at least one span structure installed on them through movable support parts, and elastic elements interacting with the ends of the span structure and cupboard walls of the corresponding ground supports at the level of the stretched fiber span structure characterized in that, in order to reduce the laboriousness of installation and increase its operational reliability, the elastic element is made of a composite anchor plate located behind the cabinet wall with reinforcement fastened on it m tip 5, which interacts with the corresponding end of the span in the level of its stretched fiber and stretch bonds, mounted on the anchor plate and the cabinet wall parallel to the neutral axis of the superstructure, the cabinet wall having a through hole through which the stop tip is passed.