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超高层筒体结构模型地震模拟振动台试验研究

Study of Shaking Table Tests on the Model of Superhigh Tube Structures

【作者】 陆华纲

【导师】 朱彤;

【作者基本信息】 大连理工大学 , 防灾减灾工程及防护工程, 2002, 硕士

【摘要】 随着高层建筑的迅速发展,各种建筑结构形式纷纷应用于工程之中,其中筒体结构以其可以提供灵活的大空间,结构受力合理而在高层建筑中得到广泛的应用。对于超过建筑结构规范限制的建筑进行结构模型模拟振动台试验是研究超高层住宅建筑结构抗震性能的一种有效手段。 本文通过对一超高层住宅进行1:50地震模型模拟振动台试验,利用有机玻璃作为模型材料,在满足弹性—重力相似条件下模拟钢筋混凝土结构从弹性到破坏的全过程,具有工程和学术上的参考价值。 试验结果表明,该结构近似于一个悬臂梁弯曲受力构件。在地震力作用下,外框墙柱的动应力响应大于核心筒墙的动应力响应。该结构为一非对称结构,但是扭转形态并不明显。沿非对称轴方向的地震响应比沿对称轴方向的地震响应小。高振型对结构的影响比较明显,抗震薄弱层出现在结构的中上部。 参考TBSAP对原型结构计算的结果,得出,虽然试验和计算结果有一点差别,但是总体上还是比较吻合。 论文最后对试验和计算提出了一些建议和改进的方案。

【Abstract】 With the rapid development of high-rise building, a variety of layout plan apply to civil engineering, among which the tube structures are widely applied due to their commodious room and reasonable structure loading. For those buildings that are beyond the limits of code for design of buildings, it is an effective way to study the earthquake-resistant behaviors of superhigh buildings by model shaking table test.Satisfying the elasticity-gravity similarity rule, a 1:50 scale superhigh residential building model that is made of PMMA is tested on shaking table to simulate the whole dynamical response process of a reinforced concrete structure from elasticity to destruction. This paper presents the result, analyzes the data and provides the references for both practical and theoretical purpose.The result of this test shows that this structure is similar to a vertical bending cantilever beam component. Under the earthquake, the peripheral walls have more intense response than core. This structure is asymmetrical, but has no obvious torsion. While shaking in the direction of asymmetrical axis, its response is less intense than shaking in the symmetrical direction. This structure is obviously influenced by higher vibration-mode. The week floors of earthquake resistance are the middle-upper part of the building.By consulting the calculation results of prototype structure, the test result is basically accordant with the calculation result although some differences.At last, this paper offers some suggestions and improvements for the test and the calculation.

  • 【分类号】TU973.17
  • 【被引频次】15
  • 【下载频次】563
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