Straddle type single-track double-box rectangular steel-concrete composite track beam structure

Abstract

The invention relates to the field of track beams, in particular to a straddle type single-track double-box rectangular steel-concrete composite track beam structure. The straddle type single-track double-box rectangular steel-concrete composite track beam structure comprises two steel-concrete track main beams parallel to each other; the two steel-concrete track main beams are connected through crossbeams below and a low plain longitudinal; each steel-concrete track main beam comprises a steel beam structure with a box-type cross section and a concrete cuboid structure with a rectangular cross section; each concrete cuboid structure is positioned above the corresponding steel beam structure and is connected with the steel beam structure through shear nails; the span of each steel-concrete track main beam is 30-80 meters; the cross beams are I beams and are in bolt connection with cross beam connecting plates of the steel-concrete track main beams; the low plain longitudinal is a diamond truss, and plain main rod piece parts are respectively connected with the steel-concrete track main beams and the cross beams. The straddle type single-track double-box rectangular steel-concrete composite track beam structure can be suitable for building double-line large-span track beams, and the double-line large-span track beams are large in span, high in transverse stiffness and high in transverse stress performance structurally.

Description

technical field [0001] The invention relates to the field of track beams, in particular to a straddle-type monorail double-box rectangular steel-concrete combined track beam structure. Background technique [0002] In the prior art, the straddle-type monorail traffic is a medium-capacity rail transit system with electric traction, special guide and switch devices, and train marshalling running on special track beams. Its main features are: (1) It is mainly an elevated structure with a small footprint, narrow track beam width, and a small footprint. (2) The rubber tire has good adhesion performance, which is conducive to acceleration and deceleration, and is conducive to running on large slopes and small radius curves. It can adapt to sharp turns and large slopes, and has good applicability to complex terrain. (3) Line selection is easy, and the amount of demolition is small. (4) The vehicle is separately equipped with running wheels and guide wheels, and adopts rubber tire...

AI Technical Summary

Problems solved by technology

However, due to the complex line conditions of the urban traffic system, it is often necessary to arrange a bridge with a large span to cross the obstacles under the bridge, while the prestressed concrete continuous beam generally adopts the form of monorail track beams arranged on a box-shaped section, and the structure is heavy. The height is too large, technically and economically unreasonable

When the span is greater than 30m, rail beams are generally used, but rail beams have problems such as large steel consumption, high vibration noise, and easy slippage between the wheels and the beam body. Moreover, once the span of the track beam increases, the weight will increase. The cross-sectional width of the main beam is small, so its lateral stiffness and other mechanical properties will be greatly reduced, posing a huge threat to the stability of the track beam

Images