Structural evaluation of Ikhwatun shelter building constructed on liquefaction potential area in Padang city, Indonesia
Structural evaluation of Ikhwatun shelter building constructed on liquefaction potential area in Padang city, Indonesia
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印度尼西亚巴东市液化潜力区 Ikhwatun 避难所建筑结构评估
DOI：
10.1051/matecconf/201927601019
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发表时间：
2019
影响因子：
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通讯作者：
Jonathan Vincensius Osman
中科院分区：
文献类型：
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作者：
Fauzan;A. Hakam;R. Yuliet;Jonathan Vincensius Osman
印度尼西亚经常发生地震和海啸等地震自然灾害，特别是印度尼西亚西苏门答腊省首府巴塘市。为了面对未来的地震和海啸灾害，当地政府修建了多处垂直避难所。其中一个收容所是位于巴塘市Koto Tangah分区的Ikhwatun收容所大楼。避难所建在海岸附近，预计有液化的可能。本研究的目的是评估避难所对地震和海啸荷载的抑制作用。建筑为钢筋混凝土结构，建筑面积2680 m2，层高22.78 m。根据土壤评估的结果，发现掩体内的土壤存款具有较高的液化潜力。因此，对上部结构和下部结构进行了地震反应谱分析，考虑土壤液化时的地震反应谱比未考虑土壤液化时的地震反应谱高1.5。分析结果表明，梁、柱和基础均不能抵抗海啸荷载。建议该建筑物在用作垂直疏散避难场所之前进行加固。
Indonesia has often experienced seismic natural disasters such as earthquakes and tsunamis especially Padang City, the capital city of West Sumatera, Indonesia. In order to face the future earthquake and tsunami disaster, the local government has built a number of vertical evacuation shelters. One of the shelters is Ikhwatun shelter building located in Koto Tangah Subdistrict of the Padang City. The shelter was built near to the coastal and expected has liquefaction potential. This study is conducted in order to evaluate the shelter to restrain the earthquake and tsunami loads. The building is made of the reinforced concrete structure with the floor area of 2680 m2 and the high of 22.78 m. Based on the result of the soil evaluation, it was found that the soil deposit in the shelter has high liquefaction potential. Therefore, the upper and lower structures are analyzed using special response spectrum of the earthquake loads for soil liquefaction, which is 1.5 higher than those on the non-soil liquefaction. The analysis result shows that the beams, columns, and foundations are all not able to resist the applied tsunami loads. It is suggested that the building to be strengthened before being used as a vertical evacuation shelter.