PROGRESSIVE COLLAPSE ANALYSIS ON HIGH-RISE BUILDING

• Main Author: Khanza, Mirara
• Format: Theses
• Language: Indonesia
• Subjects: Teknik sipil
• Online Access: https://digilib.itb.ac.id/gdl/view/57042
• Institution: Institut Teknologi Bandung

The construction of high-rise buildings is indeed a challenge for building designers, especially in earthquake-prone zone such as Indonesia. Planning of buildings in earthquake-prone zone is quite difficult. Especially in high-rise buildings that tend to have high flexibility, so that the detailing of earthquake-resistant buildings for high-rise buildings can be more complex. Although there have been many types of buildings with various forms of high-rise buildings that have been built, the behavior of each building can be different, depending on the shape of the floor plan, type of building, and the height of the building. In the context of the civil engineering workspace, especially the planning aspect, it is also necessary to pay attention to the loads working on the building structure. If the loads on the structure exceed the capacity of the structure, the structure can be damaged and even collapse. Failure of structural elements can potentially result in progressive collapse. Progressive collapse is a collapse caused by the failure of elements in a small part of the building but can result in total collapse. Because progressive collapse becomes very dangerous, it is necessary to anticipate that even if there is damage to some elements of the building, the building will not experience a total collapse. This is the basis of this study to determine the form of progressive collapse. The main purpose of this study is to determine the potential for progressive collapse in high-rise buildings. The plan refers to the WTC because the framed-tube system is still relatively rare for buildings in Indonesia. With this type of building, it can be known that the damage to the exterior elements will affect the interior elements, and so is the opposite. The model will be designed using ETABS software, then the structural response will be checked which refers to SNI 1726:2019. After all the seismic design criteria checking fulfill the requirements, a progressive collapse analysis will be checked. For this progressive collapse analysis, there will be two scenarios. The first scenario, several columns will be omitted because they are considered as fail elements. The second scenario, the object will be subjected to a large transverse load on several columns. Then, the analysis to be checked is a linear static analysis, which calculate the value of bending moment ratio, demand capacity ratio and robustness indicator which refers to GSA 2003 regarding progressive failure. At the end of the study, it is known what conditions cause the potential for progressive failure, with the failure pattern starting with beam elements.