Abstract
Recent years, the shape of building is getting sophisticated; otherwise the environmental load such as earthquake, wind, and wave cannot longer be neglected during analysis. Accommodating U-shaped building for analysis, we noticed the irregularity in both horizontal and vertical direction will create severe damages to the structure under the earthquake. In order to prevent destruction to the structural member, assigning dilatation is one possible way by utilizing double column or console beam system to break the irregularity of the building plan. During analysis, the model of non shear wall system is also built in order to compare the effectiveness between both systems. Strong evidence of double column system performance is less than console beam is answered from behavioural parameters of the both system under earthquake. Higher period, displacement and drift are peril for the double column system compare to console beam system application. Hence, console beam system is beneficially selected to solve irregularities in horizontal direction as the discontinuity of the load transfer is relatively small. Hereinafter, installing earthquake resistant system can be reconsidered after the dilatation was applied to strengthen certain direction which was marked as the weak axis of the building structure.
Highlights
Architecture plays important role in order to fulfil the artsy building look
Noting that double column (DC) system bring the impact of lower mass, but the modelization process can be definitely confidence of getting the same ratio between shear wall (SW) and Non Shear Wall (NSW) model compare to Console Beam (CB) system which is about 7% deviation of mass
If we look up further for SW and NSW result for base shear, DC-SW will provide less resistance than DC-NSW system
Summary
Architecture plays important role in order to fulfil the artsy building look. Geometry, shape, and size of the building are some main factors that entails seismic structural configuration [1]. Oftentimes, the building shape is not strict and regular anymore which cause irregularities in the floor plan (horizontal) and building height (vertical). Regular plan in both vertical and horizontal will not create problems to the member structure especially due to horizontal load such as earthquake. Earthquake load which is translated into ground motion data is very useful for the seismic design such as Indonesia. Building structure can be detected to have horizontal and/or vertical irregularity which must be directed to certain seismic design category [3]. Some solutions are introduced to strengthen the structure due to earthquake for reinforced concrete building such as shear wall. The use of reinforced concrete shear wall has been common in multi-story building [4]. Irregular building with certain earthquake restraining system is required to suppress the seismic load. The focus of this paper is application of the double column and console beam system to the irregular multi-story building
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