Pushover analysis of R.C. framed structures with infill panels made of masonry having various properties

Dinding pengisi bata merah sangat jarang diperhitungkan keberadaannya dalam perencanaan suatu struktur beton bertulang. Hal ini mengakibatkan pengaruh kekuatan dan kekakuan dinding pengisi tidak diperhitungkan dalam perencanaan suatu bangunan. Sering sekali dalam perencanaan bangunan diasumsikan sebagai struktur open frame dengan dinding bata non struktural hanya sebagai beban gravitasi yang bekerja pada balok. Padahal pada berbagai kasus gedung dengan pengaruh gempa, ternyata dinding bata ikut memikul beban lateral. Hal ini dapat dilihat dengan terjadinya pola retakan pada dinding bata yang menunjukkan terjadi transfer beban dari portal ke dinding bata. Penelitian ini bertujuan untuk mengetahui seberapa besar perubahan daktilitas struktur akibat pengaruh dinding bata merah Kata Kunci : daktilitas, dinding pengisi, equivalent diagonal strut, analisis pushover, performance point ABSTRACT The clay brick infill panels are seldom included in design analysis of reinforced concrete structural systems. So that it influences the strength and stiffness of the infill panels not considered in planning building construction. Usually, in designing, the structural system is assumed as an open frame structure with non structural clay brick panels considered as gravity loads on the beam. In facts, in many earthquake cases, the panels participates in carry on the lateral load. The crack pattern on panels show that the load transfering from frame to panels. The aim of this study was to find out the influence of the clay brick panels on structure ductility. Keywords: clay brick infill panel, ductility, equivalent diagonal strut, performance point, pushover analysis

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COMPARATIVE STUDY OF RC FRAMED STRUCTURES USING SPECTRA BASED PUSHOVER ANALYSIS

International Journal of Research in Engineering and Technology ◽

10.15623/ijret.2015.0407016 ◽

2015 ◽

Vol 04 (07) ◽

pp. 101-109

Author(s):

Pavan Kumar N .

Keyword(s):

Comparative Study ◽

Pushover Analysis ◽

Framed Structures ◽

Rc Framed Structures

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Non-Linear Static Analysis of RCC Framed Structures with and Without Infill Walls

International Journal of Innovative Technology and Exploring Engineering - Special Issue ◽

10.35940/ijitee.a5248.119119 ◽

2019 ◽

Vol 9 (1) ◽

pp. 1962-1967

Keyword(s):

Pushover Analysis ◽

Seismic Zone ◽

Infill Walls ◽

Framed Structures ◽

Equivalent Strut ◽

Non Linear ◽

Structural Engineer ◽

Earthquake Load ◽

Design Earthquake ◽

Static Pushover Analysis

The concept of an earthquake is becoming an exceptional study in our use because no longer a particular area can be targeted as an earthquake-resistant area. So, the main motif of any structural engineer during the design is to design a structure that could cope with seismic pressure successfully. On this note, non-linear static pushover analysis has become a prominent tool for the structural design and evaluation of RC elements. In this project G + 5, G + 9, G + 5 with infill walls and G + 9 with infill walls RCC framed structures have been analyzed by the use of SAP 2000 v19. The structures are designed as in keeping with IS 1893(Part 1): 2002 for earthquake forces in seismic zone IV. The use of the equivalent strut approach for modeling the infill walls is adopted and strut is designed in accordance with FEMA-356. Non-linear Static pushover analysis is performed on the designed RCC framed structures with and without infill walls. And pushover results are used to evaluate structural performance under design earthquake load, and code requirements are discussed.

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Seismic Vulnerability of Multi-Storey Buildings with Masonry Walls

International Journal of Recent Technology and Engineering - 2 ◽

10.35940/ijrte.e6593.018520 ◽

2020 ◽

Vol 8 (5) ◽

pp. 4320-4323

Keyword(s):

Seismic Behavior ◽

Seismic Vulnerability ◽

Pushover Analysis ◽

Infill Wall ◽

Braced Frame ◽

Masonry Infill ◽

Rigid Frame ◽

Infill Panels ◽

Recent Earthquakes ◽

Masonry Infill Wall

In the seismic codes, lateral rigidity and strength of infill panels are ignored in the design. However recent earthquakes occurred in the world has shown that infill walls change the dynamic behavior of the frame. In this article we propose to investigate the effect of infill wall on the seismic behavior of framed concrete buildings. For this purpose, a framed reinforced concrete building is considered. An equivalent diagonal strut model is used for masonry infill. The strut properties are calculated according to the FEMA306 [7]. Nonlinear pushover analysis is used to assess the seismic behavior. The results show that introduction of the masonry infill wall in the analysis modifies the behavior of bare frame. There is a drastic change in the bending moments and shear forces. The modeling of infill wall transforms the rigid frame into braced frame.

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Response Reduction Factor for Different Heights of RC Structure

International Journal of Innovative Technology and Exploring Engineering - Special Issue ◽

10.35940/ijitee.b6638.129219 ◽

2019 ◽

Vol 9 (2) ◽

pp. 3273-3276

Keyword(s):

Seismic Analysis ◽

Pushover Analysis ◽

Reduction Factor ◽

Framed Structures ◽

Response Reduction Factor ◽

Rc Structure ◽

Non Linear ◽

Linear Behaviour ◽

Rc Framed Structures ◽

Strength And Ductility

Seismic analysis is considered as an important parameter for any structural design. The strength and ductility of frame members in seismic design depends on the response reduction factor. In this paper four symmetrically framed structures are considered of different heights under the critical zone condition. The primary emphases of this work is regarding calculation of response reduction factor values attained from designing RC framed structures. The results are computed by applying non-linear static pushover analysis. SAP-2000 software is used for analyzing the non-linear behaviour of the structure.

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Effect of Masonry Infill Panels on the Seismic Response of Reinforced Concrete Frame Structures

Civil Engineering Journal ◽

10.28991/cej-2021-03091764 ◽

2021 ◽

Vol 7 (11) ◽

pp. 1853-1867

Author(s):

Ali Zine ◽

Abdelkrim Kadid ◽

Abdallah Zatar

Keyword(s):

Reinforced Concrete ◽

Seismic Response ◽

Pushover Analysis ◽

Reinforced Concrete Frame ◽

Masonry Infill ◽

Concrete Frame ◽

Capacity Curves ◽

Infill Panels ◽

Highly Nonlinear ◽

Non Linear

The present work concerns the numerical investigation of reinforced concrete frame buildings containing masonry infill panel under seismic loading that are widely used even in high seismicity areas. In seismic zones, these frames with masonry infill panels are generally considered as higher earthquake risk buildings. As a result there is a growing need to evaluate their level of seismic performance. The numerical modelling of infilled frames structures is a complex task, as they exhibit highly nonlinear inelastic behaviour, due to the interaction of the masonry infill panel and the surrounding frame. The available modelling approaches for masonry infill can be grouped into two principal types; Micro models and Macro models. A two dimensional model of the structure is used to carry out non-linear static analysis. Beams and columns are modelled as non-linear with lumped plasticity where the hinges are concentrated at both ends of the beams and the columns. This study is based on structures with design and detailing characteristics typical of Algerian construction model. In this regard, a non-linear pushover analysis has been conducted on three considered structures, of two, four and eight stories. Each structure is analysed as a bare frame and with two different infill configurations (totally infilled, and partially infilled). The main results that can be obtained from a pushover analysis are the capacity curves and the distribution of plastic hinges in structures. The addition of infill walls results in an increase in both the rigidity and strength of the structures. The results indicate that the presence of non-structural masonry infills can significantly modify the seismic response of reinforced concrete "frames". The initial rigidity and strength of the fully filled frame are considerably improved and the patterns of the hinges are influenced by structural elements type depending on the dynamic characteristics of the structures. Doi: 10.28991/cej-2021-03091764 Full Text: PDF

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The Use of Mixed Element FEA for Predicting Tubular Frame Behaviour

21st International Conference on Offshore Mechanics and Arctic Engineering, Volume 1 ◽

10.1115/omae2002-28186 ◽

2002 ◽

Author(s):

Rodney Pinna ◽

Beverley F. Ronalds

Keyword(s):

Numerical Models ◽

Pushover Analysis ◽

Joint Stiffness ◽

Beam Model ◽

Element Analysis ◽

Detailed Model ◽

Robust Solution ◽

Framed Structures ◽

Detailed Modelling ◽

Compression Member

Pushover analysis of offshore framed structures is usually performed on simplified structural models, using finite element analysis. To assess the typical assumptions made concerning joint and member behaviour, various numerical models of increasing complexity are considered in this paper. These range from simple beam models, to models including a detailed replica of the critical joint connected to a beam model, to a complete shell model of the critical compression member and end connections. Phenomenological models of member behaviour, in this case a Marshall Strut representation, are also examined. Numerical results are compared with experimental data from two studies [1, 2]. It is found that detailed modelling of the joint stiffness is sufficient to accurately model the peak frame response, while a detailed model of the complete compression member, which includes cross section distortion, is needed to match the residual strength of the frame. Marshall strut elements are found to provide a robust solution, provided that the variables which describe the model can be defined with sufficient accuracy. Detailed modelling of the frame is also found to be able to provide the required input data for such special purpose elements.

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