An all-steel hollow assembled overpass bridge

Abstract

The invention discloses an all-steel open-web assembled flyover. The flyover has a steel structure, and comprises a bridge body, a middle column and bridge abutments, wherein the bridge body is an open-web steel box girder bridge body; the flyover is positioned by using the middle column; the bridge abutments construct a supporting point on which the slope segment of the bridge body is contacted with the road surface, and is in vertical curve connection with the road surface; the ground contact surface of the bridge body is in sliding contact with four bridge abutments; branch vertical columns are arranged within the span distances between the bridge abutments and the middle column and are used for supporting the bridge body. The flyover has the advantages of short construction period, small investment, high cost performance, wide and sufficient material source, reliable technology, high damage resistance, small floor area, simplified process and the like.

Description

technical field [0001] The invention relates to a novel bridge technology, in particular to an assembled overpass with an all-steel hollow structure. Background technique [0002] A bridge is an important artificial structure that connects roads, crosses rivers, canyons, and houses. The bridge is a special construction method that replaces the road with a bridge to solve the special terrain and landform that affects the construction of the road to solve the problem of road connection. Overpass bridge is a kind of special method that solves the traffic congestion of urban road level crossing especially. As a permanent artificial structure, a bridge is also a costly project. But also to withstand the test of various natural disasters. The way of three-dimensional intersection is used to make vehicles from east, west, south, north and south directly pass through the intersection, and there is no need for traffic lights to pass through the intersection, which improves the pas...

AI Technical Summary

Problems solved by technology

[0009] 2. The cost of the project is expensive: the cost of the existing reinforced concrete overpass is determined according to the size of the bridge project, ranging from tens of millions to hundreds of millions

[0010] 3. Poor anti-destruction ability: the current reinforced concrete structure buildings are mainly anti-seismic, anti-explosion, and poor anti-impact ability

Reinforced concrete structure buildings are damaged, and it is very difficult to demolish and rebuild

[0011] 4. The construction process of reinforced concrete bridges is complicated and the construction period is long: it is completed by many complicated processes such as geological exploration, foundation excavation, pre-embedding of steel bars, formwork production and installation, scaffolding construction, concrete pouring and vibration, concrete maintenance and formwork removal, etc. , but also in accordance with strict operating procedures to carry out construction without any mistakes. Once mistakes occur, it will not only affect the quality of the project, but also extend the construction period. The length of the construction period is mainly determined by the engineering environment, building materials, process flow, construction management, climate environment, project Funding and other factors

Problems in a certain link will prolong the construction period and increase the cost

[0012] 5. Reinforced concrete bridges are abandoned and have no use value: Reinforced concrete bridges with no use value are abandoned due to diversion and damage, and it is necessary to pay a price to dismantle and remove the slag

Therefore, the demolition of concrete buildings has no use value, and a price needs to be paid to remove them

[0013] 6. The design layout of the existing overpass is complex and occupies a large area: the existing reinforced concrete overpass ramp design has many overhead lines with long bends, which is easy to blur the driver's direction concept. Streets are not suitable, there are many hovering overhead bridges, and the cost of natural engineering is also high

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