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Study of the Residual Strength of an RC Shear Wall with Fractal Crack Taking into Account Interlocking Interface Phenomena

机译：考虑联锁界面现象的分形裂纹RC剪力墙残余强度研究

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摘要

In the present paper, the postcracking strength of an RC shear wall element which follows the construction practices applied in Greece during the 70s is examined by taking into account the complex geometry of the crack of the wall and the mixed friction-plastification mechanisms that develop in the vicinity of the crack. Due to the significance of the crack geometry, a multiresolution analysis based on fractal geometry is performed, taking into account the size of the aggregates of concrete. The materials (steel and concrete) are assumed to have elastic-plastic behaviour. For concrete, both cracking and crushing are taken into account in an accurate manner. On the interfaces of the crack, unilateral contact and friction conditions are assumed to hold. For every structure corresponding to each resolution of the interface, a classical Euclidean problem is solved. The obtained results lead to interesting conclusions concerning the influence of the simulation of the geometry of the fractal crack on the mechanical interlock between the two faces of the crack, a factor which seems to be very important to the postcracking strength of the lightly reinforced shear wall studied here.
机译：在本文中，考虑了墙体裂缝的复杂几何形状和在混凝土中发展的混合摩擦塑化机制，研究了RC剪力墙构件的开裂强度（遵循希腊70年代的建筑实践）。裂缝附近。由于裂缝几何形状的重要性，因此考虑了混凝土骨料的尺寸，进行了基于分形几何形状的多分辨率分析。假定材料（钢和混凝土）具有弹塑性行为。对于混凝土，要同时考虑到开裂和压碎。在裂纹的界面上，假定保持单边接触和摩擦条件。对于对应于接口的每个分辨率的每个结构，解决了经典的欧几里得问题。获得的结果得出有关分形裂纹的几何形状模拟对裂纹两个面之间的机械互锁的影响的有趣结论，该因素似乎对轻质剪力墙的后开裂强度非常重要。在这里学习。

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  • 来源
    《Mathematical Problems in Engineering》 |2013年第14期|101484.1-101484.14|共14页
  • 作者

    O. Panagouli; K. Iordanidou;

  • 作者单位

    Laboratory of Structural Analysis and Design, Department of Civil Engineering, University of Thessaly, Pedion Areos, 38334 Volos, Greece;

    Laboratory of Structural Analysis and Design, Department of Civil Engineering, University of Thessaly, Pedion Areos, 38334 Volos, Greece;

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