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首页> 外文会议>Conference on Composite Construction in Steel and Concrete IV May 28-Jun 2, 2000 Banff, Alberta, Canada >LARGE SPAN COMPOSITE BEAMS WITH INTEGRATED DYNAMIC ABSORBERS
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LARGE SPAN COMPOSITE BEAMS WITH INTEGRATED DYNAMIC ABSORBERS

机译：集成动力吸收装置的大跨度复合梁

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摘要

This paper describes one solution to the vibration problem of long span composite beams by means of integrated dynamic absorbers. These were used in the floor construction of the new exhibition halls in Berlin. The stiff and heavy composite beams used in the original design with a natural frequency of 5 Hz were replaced by composite trusses with reduced weight and a natural frequency of less than 4 Hz together with integrated damper systems. Part of the bottom chord of the truss is a tension bar only fixed at the ends and vertically suspended by elastomeric springs. The tension bar stiffens the system and works additionally as a damper. This method of construction means the weight of the beams can be reduced to 60 % of the comparable beam without dampers - a significant reduction in costs. The effects have been verified in tests. In addition, potentially interesting structures with integrated damper systems, used for instance in sports halls, are also described.
机译：本文介绍了一种通过集成动力吸收器解决大跨度复合梁振动问题的方法。这些被用于柏林新展厅的地面建筑。原始设计中使用的刚性和重型复合梁的固有频率为5 Hz，已被重量减轻且固有频率小于4 Hz的复合桁架以及集成减震系统取代。桁架底弦的一部分是拉杆，仅固定在两端，并由弹性弹簧垂直悬挂。张力杆使系统变硬，并另外充当阻尼器。这种构造方法意味着梁的重量可以减少到不带阻尼器的同类梁的60％-大大降低了成本。该效果已在测试中得到验证。另外，还描述了例如在体育馆中使用的具有集成阻尼器系统的潜在有趣结构。

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