Steel box beam thin-walled pier rigid frame cable-stayed bridge suitable for straddle monorail

Abstract

The invention discloses a steel box beam thin-walled pier rigid frame cable-stayed bridge suitable for a straddle monorail. The bridge comprises a cap foundation (1), the cap foundation (1) is arranged longitudinally at interval in the bridge direction, the upper portion of the top is correspondingly provided with a pier, the pier comprises a side pier and a middle pier, the top of the pier is longitudinally provided with a steel main beam (3), pylons (4) are arranged corresponding to the top of the middle pier at the transverse sides above the steel main beam (3), the pylons (4) are providedwith cable fixing ends for fixing one end of a stay cable (6), and the other end of the stay cable (6) is sequentially fixed to the steel main beam (3) on both sides of the longitudinal direction of the pylons (4); the middle pier is at least two thin-walled piers (2) arranged at interval in the bridge direction, a pier beam consolidation system is adopted between the top of the middle pier and the steel main beam (3) to form a rigid frame structure with integral force, and the system releases the longitudinal temperature force of the steel main beam while satisfying the requirement of the straddle monorail to the rigidity of the bridge.

Description

technical field [0001] The invention belongs to the technical field of rail transit bridge structures, and more specifically relates to a steel box girder thin-walled pier rigid frame cable-stayed bridge suitable for a straddle type monorail. Background technique [0002] Straddle-type monorail traffic is a kind of urban rail transit. Because straddle-type monorail has many advantages such as good landscape, low cost and low noise, the construction period of straddle-type monorail traffic is often less than half of the subway construction period, and the cost is also lower. It is only about one-third of the subway, but it is a medium-capacity rail transit system, which can greatly improve the city's traffic problems. At present, domestic third- and fourth-tier cities are very enthusiastic about straddle-type monorail transportation, and many cities are planning and building monorail transportation, which has great market potential. [0003] Due to the differences between st...

AI Technical Summary

Problems solved by technology

Due to the small size of the cross-section of the straddle monorail and the limited span, in the prior art, if it is necessary to meet the requirements of a large span, the beam-on-beam structure is generally adopted, that is, the joist is set under the track beam as the support platform of the track beam, and the structure of the joist is commonly used There are simply supported beams, continuous beams, continuous rigid structures, etc.; if the span needs to be larger, cable-stayed bridges should be used. Due to the lightness of the steel beam structure, strong spanning capacity, and fast construction speed, it can be used as the main beam material of cable-stayed bridges, but When the main girder of steel structure is used, the rigidity of the cable-stayed bridge is low. In the prior art, the main girder is often used to increase the overall rigidity, which is wasteful and the scenery is poor.

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