Straddle type single-track prefabricated assembling steel-HPC (High Performance Concrete) combined track beam

Abstract

The invention discloses a straddle type single-track prefabricated assembling steel-HPC (High Performance Concrete) combined track beam which comprises a steel box, wherein the steel box comprises a web plate and a top plate; a plurality of prefabricated HPC plates are arranged on the top plate; a plurality of vertical through holes are formed in each prefabricated HPC plate; a connecting component is arranged on a top plate corresponding to each through hole; the steel box is communicated with all prefabricated HPC plates by casting the through holes. By adopting the combined track beam, bothsteel box plates and prefabricated HPC plates can be rapidly prefabricated according to factory standards, the risk that a great amount of shrunk cracks are caused by in-situ casting can be greatly lowered, an upper prefabricated HPC plate is not subjected to a wrapping or constraint function, free shrinkage can be ensured, the track beam is simple in structure, convenient to manufacture, good instructural durability and completeness, only connecting components need to be matched with corresponding through holes, the through holes are further cast to connect the prefabricated HPC plates withthe steel box, and the construction progress can be greatly accelerated.

Description

technical field [0001] The invention relates to the field of rail transportation, in particular to a straddle type monorail prefabricated steel-HPC (High Performance Concrete, high performance concrete) composite track beam. Background technique [0002] The straddle-type monorail traffic is different from the traditional rail traffic. It shuttles through the city in the form of viaduct spans. It is a relatively new rail traffic system. The wheel and the stabilizing wheel respectively act on the upper and lower parts of the two sides of the track beam. Straddle-type monorail transit has strong adaptability in urban rail transit construction due to its high utilization rate of urban space, small impact on the environment along the line, relatively low construction cost, and ability to adapt to steep slopes and sharp bends. It is a resource-saving and environmentally friendly The system of rail transit will surely become an important direction for the development of rail tran...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the structure of the existing straddle-type monorail steel-concrete composite track beam existing in the prior art. There is a shrinkage problem in the process of concrete setting and hardening and under the action of ambient temperature. state, unable to shrink freely, excessive stress caused by the shrinkage effect will lead to cracking of the concrete, affecting the durability and integrity of the structure, the lower part adopts a steel box structure, due to the difference in material properties, the thermal expansion and contraction of steel are not synchronized with the concrete, resulting in The connection surface between poured concrete and steel produces additional stress, which makes the force on the relatively weak connection surface more complex, making the concrete prone to cracks and even voids. To provide a straddle-type monorail prefabricated steel-HPC Composite track beam

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