Energy dissipation and shock absorption type bridge tower structure

Abstract

The application relates to the technical field of bridge shock absorption, in particular to an energy dissipation and shock absorption type bridge tower structure which comprises a pair of tower columns, and a plurality of cross beams sequentially arranged from top to bottom in a height direction of the tower column. The two ends of the cross beams are connected with the inner sides of the tower columns through at least one energy dissipation and shock absorption component. The energy dissipation and shock absorption component comprises a pair of tension and compression components arranged inparallel, two supporting components and two connecting plate pieces arranged in parallel, the two tension and compression components and the two connecting plate pieces are connected to form a rectangular frame, and the two supporting components are connected with opposite angles in the rectangular frame respectively. The connecting plate piece is connected with the inner side of the tower columnor one end of the beam. By means of the energy dissipation and shock absorption components arranged between the tower column bridges, the seismic capacity and safety of the tower columns are improved,and the energy dissipation and shock absorption structure has good construction convenience and wide applicability.

Description

technical field [0001] The present application relates to the technical field of bridge shock absorption, in particular to an energy-dissipating shock-absorbing bridge tower structure. Background technique [0002] my country has a vast territory, numerous rivers, and dense road networks in economically developed areas. In order to cross large rivers and rivers and meet the needs of transportation, long-span cable-bearing bridges have gradually been applied due to their unique advantages, mainly including cable-stayed bridges, suspension bridges, and cable-stayed bridges. Suspension combination system, etc. Long-span cable-bearing bridges are widely used, and their number is unprecedented in the history of China's transportation construction. [0003] The construction period of long-span cable-bearing bridges is generally long, and the project investment is also large. Once the bridge towers of the main load-bearing structure are seriously damaged, it is difficult to repair ...

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Problems solved by technology

[0004] In the engineering practice of the seismic design of long-span cable-bearing bridges, it is found that the seismic response of the bridge tower structure in the transverse bridge direction is the key to controlling the design of the bridge tower. Since it is necessary to ensure that the bridge tower basically maintains the elastic seismic performance target under rare earthquakes, The section size of the tower bottom and the reinforcement ratio of the main reinforcement need to be greatly increased. At the same time, the reinforcement ratio of the crossbeam should also be increased from 0.8% to about 1.5%, which meets the structural requirements. Moreover, the bending moment and horizontal earthquake force at the tower bottom will be transmitted to the lower part. Therefore, it is quite uneconomical for bridge towers and foundations to almost double the section size and material consumption just to meet the requirements of rare earthquakes.

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