Vibration and shock double-control structure for wood structure ancient building along subway and design method

Abstract

The invention provides a vibration and shock double-control structure for a wood structure ancient building along a subway and a design method. The control structure comprises a vibration isolation layer between the bottom of the wood structure ancient building and a platform foundation and dampers arranged above square columns and connected with columns, wherein the vibration isolation layer comprises an underpinning chassis (5) located at the bottom of the building, a vibration isolation support (4) and a vibration isolation support chassis (6) located on the platform foundation and used for supporting the vibration isolation support. Meanwhile, based on numerical analysis, the complete and feasible design method is provided, and the vibration isolation support and the dampers are optimally configured. According to the double-control structure and the design method, the vibration influence of the subway can be effectively relieved, and the requirement for anti-seismic protection of the wood structure ancient building can be met.

Description

technical field [0001] The invention belongs to the technical field of engineering vibration reduction and anti-seismic technology, and in particular relates to a control structure and a design method for simultaneously improving the vibration reduction and anti-seismic performance of ancient wooden structures. Background technique [0002] Ancient wooden buildings have important historical and cultural values. Although it has been found to have excellent seismic performance after research, such buildings still suffered damage to varying degrees in recent major earthquakes. At the same time, with the acceleration of urbanization, the construction of public transportation such as urban subways has gradually increased. Compared with the probability of strong vibrations such as earthquakes, ancient wooden structures around the urban transportation network will be more frequently affected by subway vibrations. The time of occurrence It is also longer, seriously affecting its str...

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Problems solved by technology

[0002] Ancient wooden buildings have important historical and cultural values. Although it has been found to have excellent seismic performance after research, such buildings still suffered damage to varying degrees in recent major earthquakes.

At the same time, with the acceleration of urbanization, the construction of public transportation such as urban subways has gradually increased. Compared with the probability of strong vibrations such as earthquakes, ancient wooden structures around the urban transportation network will be more frequently affected by subway vibrations. The time of occurrence It is also longer, seriously affecting its structural safety and normal use

At present, most of the ancient buildings have only been reinforced against earthquakes. Although the traditional reinforcement and reconstruction measures have strengthened the structural integrity and improved the earthquake resistance of the structure, it will inevitably increase the structural stiffness. The result is that the dynamic response of the structure is increased, and the It is impossible to reduce the impact of subway vibration on the building, and it will inevitably affect the appearance and interior decoration of the building

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