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Seismic behaviour and strengthening of a vulnerable structure

机译：地震行为和脆弱结构的加固

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The strengthening measures of an unusual masonry building of high seismic vulnerability are presented and assessment of their effectiveness is performed. The building is highly asymmetric and it is located in a zone of seismicity II, according to Greek Seismic Code. In addition, two adjacent walls have openings along 71% of their length. The building is scheduled and the authorities responsible for the preservation did not allow interventions that may alter its faces. Herein, the seismic response of the structure as well as the effectiveness of the finally adopted measures is presented. The effectiveness is assessed by comparing the overstressed areas of the original building with those of the strengthened one. The measures proposed are the replacement of flexible floors by stiff composite slabs, the construction of a reinforced concrete tie belt at the top of all structural walls, grouting of cement grout, repointing the masonry and the construction of a double shotcrete jacket.
机译：提出了具有高地震易损性的异常砖石建筑的加固措施，并对其有效性进行了评估。根据希腊地震法，该建筑物高度不对称，位于II级地震区。此外，两个相邻的壁在其长度的71％处具有开口。该建筑物已安排好时间表，负责保存的主管部门不允许采取可能会改变其外观的干预措施。本文介绍了结构的地震反应以及最终采取措施的有效性。通过比较原始建筑与加固建筑的过应力区域来评估有效性。建议采取的措施包括用刚性复合板代替柔性地板，在所有结构墙的顶部建造钢筋混凝土绑带，对水泥浆进行灌浆，重新定位砖石结构以及建造双层喷射混凝土外套。

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