Construction method of parallel operation of steel pipe arch construction, laying and erecting

Abstract

The invention discloses a construction method of parallel operation of steel pipe arch construction, laying and erecting. The construction method is achieved by erecting temporary piers at closure parts of girders and erecting independent lattice brackets on the girders. By additionally installing the temporary piers at the middle spans of continuous beams and reducing the clear spans of the girders and the continuous beams, the phenomenon that excessive disturbance exists at the midspan positions in laying and erecting operation when girder transporting vehicles and bridge girder erection machines pass. The steel pipe arch installation is conducted by using the independent lattice brackets, reserved space for the independent lattice brackets is large and can allow the girder transportingvehicles and bridge girder erection machines to pass in laying and erecting operation, and at the same time, the self-weight of the independent lattice brackets are relatively low and has little influence on the stability of girder bodies. The method changes the current situation of a traditional method in which steel pipe arches are firstly installed, concrete is poured into the steel pipe arches, suspenders are installed and stretched, and then laying and erecting operation can be conducted. According to the method, before a girder-arch system is formed, parallel operation of steel pipe arch installation, laying and erecting can be achieved, and the purpose of saving the construction period is achieved.

Description

technical field [0001] The invention belongs to the technical field of elevated bridge construction, in particular to the technical field of continuous beam-steel-pipe-arch composite bridge construction, and particularly relates to a construction method for parallel operation of steel-pipe arch construction and frame-laying. Background technique [0002] The acceleration of urbanization and the development of economy promote the construction of bridges in my country. With the rapid development of transportation, people have put forward higher requirements for the economy, safety and smoothness of bridges. Compared with traditional bridges, continuous beam-steel-tube arch composite bridges have lower requirements for material index and foundation, higher spanning capacity and dynamic stability, and more convenient construction with beautiful appearance. Therefore, continuous beam-steel-tube arch composite bridges have a broad application space. However, there are many techni...

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Problems solved by technology

[0003] At present, the existing domestic continuous beam-steel pipe arch composite bridge construction method is generally to construct the main girder first, then construct the steel pipe arch and pour the steel pipe arch concrete, install the boom and stretch the boom before laying the track.

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