Segment high pier bridge seismic reduction and isolation structure using inhaul cable supports arranged on double layers

Abstract

The invention discloses a segment high pier bridge seismic reduction and isolation structure using inhaul cable supports arranged on double layers. The segment high pier bridge seismic reduction and isolation structure comprises a bearing platform, a lower pier body, an upper pier body and a beam body which are sequentially stacked from bottom to top; the segment high pier bridge seismic reduction and isolation structure further comprises the first inhaul cable support and the second inhaul cable support, the first inhaul cable support is arranged on the top surface of the upper pier body, the beam body is stacked on the top surface of the upper pier body through the first inhaul cable support, the second inhaul cable support is arranged on a butt joint surface of the lower pier body and the upper pier body, and the upper pier body is stacked on the lower pier body through the second inhaul cable support. The segment high pier bridge seismic reduction and isolation structure achieves the purposes of enhancing seismic reduction and limiting capability of a bridge system and meanwhile improving adaptability and diversity of seismic reduction and isolation technique used for high pier bridges, greatly reduces or even avoids seismic damage, is suitable for railway bridges, highway bridges and urban viaducts, and particularly has excellent seismic resistance for segment constructed high piers especially in high-intensity regions.

Description

technical field [0001] The invention relates to the technical field of bridge structure design, in particular to a segmental high-pier bridge shock-absorbing and isolation structure adopting double-layer cable supports. Background technique [0002] With the rapid construction of roads and railways in the southwest and northwest mountainous areas of my country and the development of urban viaducts, more and more high-pier bridges have been widely used in these areas, and the pier heights are getting higher and higher. Especially in the construction of roads in mountainous areas, due to the complex terrain, high mountains and steep slopes, many bridges have to cross valleys and deep ditches. Many of these bridges use simply supported beam bridges with spans ranging from 20 to 50m or continuous bridges with 2 to 7 spans. Beam bridges, or long-span continuous rigid structures, usually have pier heights of tens of meters or even hundreds of meters. With the acceleration of high...

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Problems solved by technology

[0004] At present, there is a lack of experience at home and abroad on high-pier high-intensity earthquakes. High-pier bridges are irregular bridges.

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