scholarly journals NONLINEAR DYNAMIC ANALYSIS OF TWO STOREY RC BUILDING MODEL

2021 ◽  
Vol 83 (4) ◽  
pp. 51-62
Author(s):  
Syed Muhammad Bilal Haider ◽  
Zafarullah Nizamani ◽  
Chun-Chieh Yip ◽  
Jing-Ying Wong
Keyword(s):  
Nonlinear Dynamic ◽  
Ground Motions ◽  
Nonlinear Dynamic Analysis ◽  
Time History ◽  
Shaking Table ◽  
Ground Movement ◽  
Frame Structure ◽  
Seismic Zone ◽  
Building Structures ◽  
Building Model

Peninsular Malaysia lies in a low seismic zone, but its building structures had come across the concrete deterioration due to the seismic ground motion originated from far or near field. Notably, most of the building structures in this country are designed based on wind load only. Moreover, current practice to analyze or design a building such as FEMA 368 and EC8 underestimated the effect of repeated excitations. These guidelines only considered single vibrations to evaluate the framed structure. Therefore, the objective of this study was to assess the performance of private educational institute reinforced concrete building with generic 3D two storey frame structure under multiple seismic motions. Structural model was examined under series of earthquake motions which include pre-shock, main shock and aftershock scenario. Total of 7 seismic ground motions were selected to quantify the structural frame model by nonlinear dynamic time history analyses. Pseudo-dynamic ground motions were recorded on shaking table ranging from 0.18 g to 0.82 g were applied onto the building model for assessment. The outcome of this study has identified that the low-rise building model survived at higher PGA values. Moderate damages (0.25 ≤ DI < 0.40) were recorded after passing through multiple ground motions. Moreover, low seismic vibrations with large ground movement had caused ground floor storey act as soft storey. The study concluded that low rise building model had higher tendency to absorb lower to higher ‘g’ values and resist the earthquake loading due to the strength of framed structure.

Nonlinear dynamic analysis of reinforced concrete building structures

1980 ◽  
Vol 7 (2) ◽  
pp. 333-344 ◽  
Author(s):  
Shunsuke Otani
Keyword(s):  
Reinforced Concrete ◽  
Dynamic Analysis ◽  
Nonlinear Dynamic ◽  
Nonlinear Dynamic Analysis ◽  
Analytical Models ◽  
Building Structures ◽  
Reinforced Concrete Building ◽  
Building Model ◽  
Concrete Members ◽  
Concrete Building

This state-of-the-art paper discusses nonlinear dynamic analysis of reinforced concrete building structures. Nonlinear analysis of a reinforced concrete building is difficult (a) because inelastic deformation is not confined at critical sections, but spreads throughout the structure; and (b) because stiffness of the reinforced concrete is dependent on a strain history.The paper reviews the behaviour of reinforced concrete members and their subassemblies observed during laboratory tests. Then different hysteresis and analytical models of reinforced concrete members are reviewed, and their application to the simulation of building model behaviour is discussed.

Nonlinear Seismic Response of Special-Shaped Column Frame Structures

2010 ◽  
Vol 163-167 ◽  
pp. 1222-1225
Author(s):  
Xiao Bin Han ◽  
Chun Sheng Bao ◽  
Ying Gao ◽  
Jian Min Bian
Keyword(s):  
Spatial Analysis ◽  
Seismic Response ◽  
Seismic Performance ◽  
Nonlinear Dynamic ◽  
Ground Motions ◽  
Nonlinear Dynamic Analysis ◽  
Frame Structure ◽  
Frame Structures ◽  
Analysis Model ◽  
Nonlinear Seismic Response

The spatial analysis model of special-shaped column frame structure is established in ANSYS. The nonlinear dynamic analysis is carried out for the structure by inputting ground motions in one direction. The seismic performance of the structure under rare seismic actions was examined and whether the structure achieved the predetermined seismic aims is evaluated. The results indicates that the structure which under the 8-degree zone designed according to the codes can achieve the predetermined seismic aims under the rarely occurred earthquake actions.

Nonlinear Dynamic Analysis of the Damping Frame Structure System

2012 ◽  
Vol 594-597 ◽  
pp. 886-890 ◽  
Author(s):  
Gan Hong ◽  
Mei Li ◽  
Yi Zhen Yang
Keyword(s):  
Energy Dissipation ◽  
Seismic Response ◽  
Nonlinear Dynamic ◽  
Time History ◽  
Time History Analysis ◽  
Frame Structure ◽  
Force Model ◽  
Operating Characteristics ◽  
Restoring Force ◽  
History Analysis

Abstract. In the paper, take full account of energy dissipation operating characteristics. Interlayer shear-frame structure for the analysis of the Wilson-Θmethod ELASTOPLASTIC schedule, the design of a nonlinear dynamic time history analysis procedure. On this basis, taking into account the restoring force characteristics of the energy dissipation system, the inflection point in the restoring force model treatment, to avoid a result of the calculation results of distortion due to the iterative error. A frame structure seismic response time history analysis results show that: the framework of the energy dissipation significantly lower than the seismic response of the common framework, and its role in the earthquake when more significant.

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.

scholarly journals Seismic and Wind Analysis of Regular and Irregular RC Structures with Tuned Mass Damper

2019 ◽  
Vol 8 (3) ◽  
pp. 2263-2269
Keyword(s):  
Damping Ratio ◽  
Time History ◽  
Tuned Mass Damper ◽  
Ground Movement ◽  
Building Structures ◽  
Rc Structures ◽  
Dynamic Forces ◽  
Mass Damper ◽  
Rc Building ◽  
The Impact

Latest trend in the development high rise structure demanding taller and lighter structures, which are progressively adaptable with very low damping ratio. As the structures developing vertically, they are ending up all the more affecting by powerful excitation forces, for example, wind and seismic forces. For the more safety of structure and inhabitant's solace, the vibrations of the tall structures become a major issue for both structural designers. So as to control the vibration, various methodologies are proposed out of the few systems accessible for vibration control. Out of numerous methods, TMD has been observed to be increasingly powerful in controlling the dynamic forces caused due to seismic and wind excitations. In this paper, the adequacy of TMD in controlling the dynamic reaction of structures and the impact of different ground movement parameters on the seismic viability of TMD is researched. Essentially, a TMD is a vibratory subsystem appended to a bigger scale host structure so as to lessen the dynamic reactions. The frequency of damper will tuned to essential structure's frequency, so when frequency is high, the damper will results to resonate out of phase along with structural movement. The objective of this work is to study the impact of TMD on the dynamic forces brought about by seismic tremor and wind excitations in standard just as unpredictable in tall RC building structures. For that three 22 story RC building structures are considered with a similar arrangement out of which one ordinary regular structure and the other two are irregular RC structures are demonstrated in Etabs. In irregular RC structures, Stiffness irregularity and torsional irregularity are considered. For assessing seismic and wind reactions of structures, time history analysis, and static analysis used, with and without the tuned mass damper in ETABS. The outcomes acquired from the investigation of three 22 story RC structures with and without tuned mass damper are compared

scholarly journals Development of synthetic ground motion at a specific site in Yogyakarta town, Indonesia utilizing the PSHA Method

2020 ◽  
Vol 156 ◽  
pp. 02011
Author(s):  
Widodo Pawirodikromo ◽  
Lalu Makrup ◽  
Mochamad Teguh ◽  
Bambang Suryo
Keyword(s):  
Pilot Study ◽  
Ground Motion ◽  
Hazard Analysis ◽  
Ground Motions ◽  
Time History ◽  
Building Structures ◽  
Uniform Hazard Spectra ◽  
Crustal Earthquakes ◽  
History Analysis ◽  
Dynamic Time

This paper presents the development of synthetic ground motion at specific sites in Yogyakarta town. In the 2019 Indonesian Seismic Code [1] provides an alternative method in the analysis of building structures by applying the dynamic time history analysis. At least 11-pairs of earthquake recordings must be used in the analysis. Synthetic ground motion utilizing the Method of Probability Seismic Hazard Analysis (PSHA) was used in this study. A selected site in Yogyakarta town was chosen as a pilot study considering that there were many fatalities and building damage caused by the 2006 Yogyakarta earthquake. The Uniform Hazard Spectra (UHS) based on the shallow crustal earthquake source is higher than the Megathrust. The risk targeted spectrum demand MCEr has been considered, which on average 12.3% greater than the UHS. The synthetic ground motions (SGM) are accordingly based on the shallow crustal earthquakes. The dominant magnitude and distance are MD = 6.5 and RD = 14.5 km. They show that the contribution of the Opak River fault to the hazard in Yogyakarta town is very dominant because the distance is very close. Based on the obtained MD and RD, spectral matching, and testing significant duration D595, the 12-synthetic ground motions were successfully developed.

Dynamic Damage Analysis of SRC Frame Structure under Earthquake Action

2008 ◽  
Vol 385-387 ◽  
pp. 373-376 ◽  
Author(s):  
Shan Suo Zheng ◽  
Bin Wang ◽  
Liang Zhang ◽  
Lei Li ◽  
Wei Wang
Keyword(s):  
Numerical Analysis ◽  
Plastic Strain ◽  
Balance Equation ◽  
Nonlinear Dynamic ◽  
Damage Mechanics ◽  
Dynamic Balance ◽  
Shaking Table ◽  
Frame Structure ◽  
Test Results ◽  
Dynamic Damage

Structures may enter into nonlinear stage under strong earthquake, so precise prediction of nonlinear behavior for building structure in earthquake is important which can assess the earthquake resistance safety of structures accurately. The exact numerical analysis model is required in actual engineering. In this paper the concept of nonlinear dynamic damage is introduced in steel reinforced concrete (SRC) composite structure, based on the theory of continuous damage mechanics. The damage variable is defined and computed by effective plastic strain of material, furthermore, concrete dynamic constitutive model is derived which considered plastic strain of material. Finally, the damage dynamic balance equation is established. Via comparison with test results of a three-story, two-bay SRC frame model which is tested on a shaking table, it is shown that the results of numerical analysis agree well with test results, indicating that the nonlinear dynamic balance equation is capable of describing the dynamic response of SRC frame structure with satisfactory accuracy. The research supplies theoretical basis for the seismic behavior analysis of SRC high-rise buildings.

Experimental Investigation of Effectiveness of Smart Passive System for Seismic Protection of Building Structures

2008 ◽  
Vol 56 ◽  
pp. 355-362
Author(s):  
Hyung Jo Jung ◽  
Dong Doo Jang ◽  
Heon Jae Lee ◽  
Seok Jun Moon
Keyword(s):  
Electromagnetic Induction ◽  
Mr Damper ◽  
Shaking Table ◽  
Frame Structure ◽  
Seismic Protection ◽  
Semiactive Control ◽  
Building Structures ◽  
Passive System ◽  
Engineering Structures ◽  
Faraday’S Law

The newly developed smart passive system is based on a magnetorheological fluid (MR) damper, which is one of the most promising semiacitve control devices, and an electromagnetic induction (EMI) part, which is a power harvesting device from vibration of a structure according to Faraday’s law of electromagnetic induction. Numerical simulations recently conducted by the authors have verified that the smart passive system could be effective to reduce the structural responses in the cases of civil engineering structures such as buildings and bridges. On the other hand, the experimental validation of the system is not sufficiently carried out yet. In this study, therefore, a series of shaking table tests are conducted to experimentally investigate the effectiveness of the smart passive system for seismic protection of building structure. The model structure is a scaled six-story frame structure with the height of 3.5 m and the weight of about 8 ton. The smart passive system is installed between its base floor and the first floor. The responses of the structure are measured under several ground motions including scaled historic earthquake records. The preliminarily experimental results in the smart passive system case are compared with those in the MR damper-based semiactive control cases.

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