Ultra high performance concrete truss arch element, truss arch bridge and construction method thereof

Abstract

The invention relates to the technical field of bridge engineering, and discloses an ultra high performance concrete truss arch sheet element, a truss arch sheet bridge and a construction method. Theultra-high performance concrete truss arch element consists of upper chord, web and lower chord. The web and lower chord are approximately equilateral triangle structure. Steel pas between that units.The ultra-high performance concrete (UHPC) truss arch bridge is constructed by pouring bridge deck and hanging beam between several UHPC truss arch segments. The method of erection of the bridge is as follows: sectional horizontal prefabricated truss arch element, steel is reserved at the joints. Channel structure of ultra-high performance concrete structure, erect truss arch piece on site and cast ultra-high performance concrete at the joint, install hanging beam and cast-in-place bridge deck. The bridge erected with the truss arch piece has the advantages of light dead weight, good durability, convenient and rapid construction, reducing the risk of structural cracking, economic structure, beautiful appearance and so on. It meets the requirements of the development of assembled bridge and has a good application prospect.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, in particular to an ultra-high performance concrete truss arch unit, a truss arch bridge and a construction method. Background technique [0002] Facing the practical needs of eradicating common problems and improving reliability of small and medium-span bridges in my country, improve and innovate the existing structure system of small and medium-span bridges, increase the research and development and application of new structures, new materials, new processes and new equipment, and improve the integration It is one of the development directions of bridge construction in my country to promote the development of small and medium-sized bridges to industrialization, standardization and high durability. [0003] Reinforced concrete truss arch bridge refers to an arch bridge composed of solid web section in the middle and arch truss pieces on both sides. The arch pieces of the truss are con...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide an ultra-high-performance concrete truss arch unit and connection structure in order to overcome the existing common concrete truss arch bridge problems such as easy cracking of joints, cracking and degradation of transverse connections, and low bearing potential. The truss arch unit adopts integral horizontal prefabrication, and is cast and installed on site through a unique connection structure. Reliable, light weight, good durability, etc.

Images