scholarly journals PENGARUH SETBACK PADA BANGUNAN DENGAN SOFT STORY TERHADAP KINERJA STRUKTUR AKIBAT BEBAN GEMPA

2018 ◽  
Vol 4 (1) ◽  
Author(s):  
Rizki Efrida
Keyword(s):  
Pushover Analysis ◽  
Skeletal Structure ◽  
Engineering Construction ◽  
Ground Floor ◽  
Soft Story ◽  
Pushover Curve ◽  
Earthquake Load ◽  
Collapse Behavior ◽  
Story Building ◽  
Storey Building

Pembangunan konstruksi teknik sipil mengalami perkembangan yang sangat pesat seiring dengan berkembangnya zaman sehingga menuntut kita lebih kreatif dalam perancangan struktur baik dalam bentuk bangunan beraturan maupun tidak beraturan yaitu, bangunan setback dan bangunan soft story. Di Indonesia, tantangan yang dihadapi dalam kontruksi gedung bertingkat adalah adanya resiko akibat gempa. Salah satu metode untuk menganalisis beban gempa adalah analisis pushover. Analisis pushover merupakan prosedur analisis untuk mengetahui perilaku keruntuhan suatu bangunan terhadap gempa. Penelitian dilakukan untuk mengetahui seberapa besar pengaruh setback dan soft story yaitu bangunan tanpa dinding pengisi pada lantai dasar terhadap kinerja struktur akibat beban gempa berdasarkan hasil kurva pushover. Stuktur bangunan dimodelkan sebagai portal 2 dimensi yang tanpa adanya dinding pengisi pada lantai dasar yaitu terdiri dari 4 model rangka penuh, setback1, setback2, dan setback3. Hasil analisis dalam penelitian ini menunjukkan bahwa kontribusi dinding pengisi yang terbuat dari dinding bata mempengaruhi kekakuan lateral struktur, serta dengan dikuranginya setback pada struktur bangunan mengakibatkan nilai kekakuan semakin kecil sehingga nilai daktilitas semakin besar. Pada struktur gedung rangka penuh dan setback1 lunak kondisi bangunan sudah mengalami rusak parah atau runtuh saat terjadi gempa kuatdikarenakan terbentuknya sendi plastis pada kolom lantai pertama.  Kata Kunci : Analisis Pushover, Dinding Pengisi, Setback, Soft Story  ABSTRACT The construction of civil engineering construction has developed very rapidly along with the development of the era so it demands that we are more creative in the design of structures both in the form of irregular and irregular buildings ie, setback building and soft story building. In Indonesia, the challenge faced in the construction of multi-storey building is the risk caused by the earthquake. One method to analyze earthquake loads is pushover analysis. Pushover analysis is an analytical procedure to determine the collapse behavior of a building against earthquake. The research was conducted to find out how big the effect of setback and soft story that is building without wall filler on the ground floor to the structure performance due to earthquake load based on the result of pushover curve. The structure of the building is modeled as a 2-dimensional portal without the filler wall on the ground floor consisting of 4 full frame models, setback1, setback2, and setback 3. The results of the analysis in this study indicate that the contribution of wall filler made of brick walls affect the lateral stiffness of the structure, as well as with the reduced setback on the structure of the building resulting in smaller stiffness value so that the greater the ductility value. In full skeletal structure and soft setback1 the condition of the building has been severely damaged or collapsed during a strong earthquake due to the formation of plastic joints in the first floor column. Keywords: Pushover Analysis, Setback, Soft Story, Wall Filler

scholarly journals Analisis Perilaku Struktur Bangunan Terhadap Beban Gempa Pada Bangunan Soft Second Story Dengan Variasi Ketinggian Kolom

2018 ◽  
Vol 13 (2) ◽  
Author(s):  
Dian Yuristia ◽  
Ririt Aprilin S ◽  
R. Eka Murtinugraha
Keyword(s):  
Seismic Analysis ◽  
Response Spectrum ◽  
Fundamental Period ◽  
Column Height ◽  
Base Shear ◽  
Soft Story ◽  
Story Drift ◽  
Earthquake Load ◽  
Internal Forces ◽  
Story Building

The purpose of this research was to analyze soft second  story bulding behavior due to the earthquake load by applying column height variation. The building case has a vertical irregularity soft story on the second level so the behavior during the earthquake was analyzed by heighten the columns at the second level of the building. The behavior of building structure results the response such as internal forces in columns and beams, base shear, fundamental period, displacement and story drift. The seismic analysis is using dynamic analysis response spectrum based on SNI 1726:2012 and carried out using software ETABS version 9.7.4. The results of this research indicates that the increase of column height in soft second  story building reduces the building stiffness. So it decreases the building forces, extending the fundamental period, decreasing the base shear, increasing the displacement and the story drift. It can be concluded that the soft second  story building reduces the building resistance of earthquake load by produces the behavior approaches the collapse.

scholarly journals Evaluasi Kesehatan Struktur Bangunan berdasarkan Respon Dinamik Berbasiskan Data Akselerometer

2017 ◽  
Vol 23 (2) ◽  
pp. 142
Author(s):  
Wan Fikri Darmawan ◽  
Reni Suryanita ◽  
Zulfikar Djauhari
Keyword(s):  
Pushover Analysis ◽  
Damage Index ◽  
Time History ◽  
Frame Structure ◽  
Accelerometer Data ◽  
Building Structures ◽  
Element Analysis ◽  
Earthquake Load ◽  
Damage Condition ◽  
A Minor

The aim of the research is to analysis the health of a simple frame structure based on accelerometer data. The research is a preliminary study which used the accelerometer data in the time history analysis of the structure. The parameters has been used in the study are the Story Damage Index (SDI), the ApproximateStory Damage Index (ASDI), the Flexibility Damage Index (MFDI), and the Park Ang Damage Index. The finite element analysis is used to identify the damage of building structures through the pushover analysis. The study has conducted the minor damage index, physical appearance to check the cracked beam andconcrete column. The damage index average is in the range 0-0.08. It can be concluded the building is still able to withstand the earthquake load. However, the building is stated in a minor damage condition after the earthquake occurred.

Torsional Behavior of Irregular RC Building under Static and Dynamic Loading

2019 ◽  
Vol 969 ◽  
pp. 247-252
Author(s):  
S. Neelavathi ◽  
K.G. Shwetha ◽  
C.L. Mahesh Kumar
Keyword(s):  
Present Situation ◽  
Shear Wall ◽  
Reinforced Concrete Structure ◽  
High Rise ◽  
Time Period ◽  
Rc Building ◽  
Earthquake Load ◽  
Structural Irregularities ◽  
Static And Dynamic Loading ◽  
Storey Building

In the present situation the growth of population is increasing rapidly. In view of this, the development of the buildings are changing its dimension to high rise structures further having trends of structural irregularities. These kinds of irregularities in the structure cannot be avoided as it is more vulnerable to the seismic actions. The structure fails by the uneven moments created by the seismic actions because of the irregularities in the structure which is based on the parameters like storey drift, displacement, torsional effects etc., In this paper the effects of the torsional irregularity is studied and the failure has been minimized by adding necessary elements like shear wall and bracings where ever required. In Present study we have considered the 20 storey building of reinforced concrete structure which includes five models of different regular and irregular shaped structures which are subjected to earthquake load and are modeled by using ETABS version 9. Analysis results elaborate the parameters like displacement, time period, storey drift and comparisons of the results among the set of models.

scholarly journals Seismic Study of Multistorey Building using Floating Column

2020 ◽  
Vol 6 (9) ◽  
pp. 6-11
Keyword(s):  
Load Transfer ◽  
Three Dimensional ◽  
Shear Walls ◽  
Base Shear ◽  
Maximum Displacement ◽  
Displacement Effect ◽  
Transfer Path ◽  
Building Systems ◽  
Earthquake Load ◽  
Storey Building

Columns rest on the beam without foundation are called floating column.They are used commonly in multi-storey buildings which are purposed to hold parking at ground floor or open halls at higher floors. Discontinuation within the load transfer path is seen in this column. Thus they are designed for gravity loads. But these structures aren’t designed for earthquake loads.In present scenario structures with floating column may be a common characteristic in urban India. However in tectonic areas, this type of structure is not preferred due to discontinuity of load transfer path i.e. whole earthquake load on the structure is shared by the shear walls without any loads on the floating columns.This paper review the nature of a multi-storey building under quake forces with and without of floating columns. This analysis focus the importance of specially identifying the presence of the floating column within the study of the struture, establish its correlation with the building without a floating column using designing software Extended three dimensional analysis of building systems (ETABS). This paper also discusses the performance of structure having floating column in seismically active areas. Besides these various parameter such as maximum displacement, effect on number of storey on drift, base shear are also studied.

scholarly journals Damage capacity on RC structures using performance based analysis

2021 ◽  
Vol 309 ◽  
pp. 01203
Author(s):  
Kurelly Spandana ◽  
Y.Kamala Raju ◽  
G V V Satyanarayana ◽  
Atulkumar Manchalwar
Keyword(s):  
Static Analysis ◽  
Pushover Analysis ◽  
Building Design ◽  
Rc Structures ◽  
Earthquake Loads ◽  
Software Analysis ◽  
Gravity Load ◽  
Earthquake Resistant ◽  
Pushover Curve ◽  
Rc Building

Performance based analysis is conducted on a structure to know the performance of building under severe earthquake loads with limited and well-distributed damage. To do this analysis a non-linear static analysis called pushover analysis had conducted on the structure. In this paper, an RC building with both 5 storey and 10 storey is designed for both gravity loads and earthquake resistant loads using SAP2000 software. Analysis is done in both X and Y direction to get a damage curve (pushover curve). By studying the damage curve, the results that obtained are earthquake resistant designed building had more strength when compared to gravity load designed building and it is better to consider earthquake in building design , because gravity loads alone cannot give the adequate results.

scholarly journals A Nonlinear Static Research on A G+5 Storey Existing RC Structure Under Seismic Loading

2019 ◽  
Vol 8 (2S3) ◽  
pp. 1078-1082
Keyword(s):  
Seismic Hazard ◽  
Plastic Hinge ◽  
Pushover Analysis ◽  
Strain Curve ◽  
Reinforced Concrete Structure ◽  
Structural Evaluation ◽  
Rc Structure ◽  
Pushover Curve ◽  
Nonlinear Static ◽  
Legal Guidelines

A six-story reinforced concrete structure area to a seismic hazard can be analyzed; as soon as the member has yielded, the plastic hinge will likely be used to symbolize the mode of failure in the beams and columns. The pushover analysis is carried out on constructing utilizing an identical static process from ETABS-2016 and IS 1893-2016. The analysis is regulated through efficiency-situated warmness engineering legal guidelines, even as an inelastic structural evaluation is combined with seismic hazard to calculate the expected seismic performance of the structure. The building's basis shear v / s roof strain curve referred to as the pushover curve is an enormous consequence of pushover evaluation; nonlinear dynamic evaluation is carried out in both respects (X & Y). Default hinge facets to be had in precise packages are built-in for every member in step with FEMA-440(Federal Emergency management agency) and ATC-40(applied technology Council) for every member.

scholarly journals Analisa Pushover dan Eksperimen Struktur Portal dengan Dinding Batubata dengan Menggunakan Angkur pada Kolom dan Balok pada Non Engineered Building

2019 ◽  
Vol 24 (2) ◽  
pp. 158
Author(s):  
Marsaulina Hutajulu ◽  
Johannes Tarigan ◽  
Perwira Tarigan
Keyword(s):  
Test Object ◽  
Pushover Analysis ◽  
Practical Experience ◽  
Numerical Results ◽  
Experimental Results ◽  
Structural Components ◽  
Earthquake Load ◽  
Almost All ◽  
The Relationship

Based on the findings in almost all earthquakes that hit Indonesia, buildings that were damaged and collapsed were simple non-engineered buildings. Where buildings are built based on practical experience without structural calculations. One form of damage to non-structural components and structures is the relationship between columns and brick walls, where cracks and separation between columns and walls occur due to lack of anchors (cuttings). To find out how much an earthquake load can make a test object that uses anchor has been destroyed, a pushover analysis is carried out numerically and experimentally. From the numerical results it is obtained a pushover of 7490 kg and a displacement of 16.7 mm, while the experimental results obtained a pushover 7,540 kg and 56.5 mm displacement. Numerical results and experiments are very close at 99.34%.

scholarly journals Pushover Analysis of Partially Strengthened Column Structures on an Existing Multi-story Building

2019 ◽  
Vol 280 ◽  
pp. 01003
Author(s):  
Mochamad Teguh ◽  
Novia Mahlisani ◽  
Fadillawaty Saleh
Keyword(s):  
Plastic Hinge ◽  
Pushover Analysis ◽  
Building Collapse ◽  
Column Structure ◽  
Significant Damage ◽  
Immediate Occupancy ◽  
Strength And Stiffness ◽  
Building Condition ◽  
Story Building

A pushover analysis was conducted to evaluate structuralperformance of an extended building structure subjected to simulatedseismic loads. The Inna Garuda Hotel was selected as a building object ofthis research focusing on the extension building only. This 7-storyreinforced concrete building has been functioned as a hotel building in theYogyakarta City of Indonesia for over 30 years. Preliminary results of thisanalysis indicated that the performance level of this building wascategorized as an immediate occupancy (IO), however, the plastic hingeson the slim column structure components occurred. Given this condition, the structure of the building does not fulfill the concept of a strong columnweakbeam (SCWB). The research objective is to follow up on thepotential of building collapse due to the column structure weakness byconducting a research on the strengthening of slim column elements. Apushover analysis was carried out using ETABS software. A strengtheningtechnique was adopted by enlarging the dimensions of the slim columngradually. In this study, the slim column was enlarged up to 300/650 mm(KJ-P5 model). The pushover analysis results of the KJ-P5 model haveshown the drift ratio is less than 1.0% for the four directions of thepushover with the level of immediate occupancy performance (IO). Referring to the recent building condition, the strengthened slim columnsdo not seem significant damage to the structural components of thebuilding resulting in a fulfilling of SCWB concept, where a similarcondition on their strength and stiffness as before the earthquake occurs. The results of the plastic hinge locations, as well as the performance levelsof the indicated slim columns in resisting overall structures, are extensivelydiscussed in this paper.

Mitigating San Francisco's Soft-Story Building Problem

2009 ◽  
Author(s):  
Laura Dwelley Samant ◽  
Keith Porter ◽  
Kelly Cobeen ◽  
L. Thomas Tobin ◽  
Laurence Kornfield ◽  
...  
Keyword(s):  
Soft Story ◽  
Story Building
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