scholarly journals Dynamic Behavior of A High-Rise Building Under Seismic Loads for Different Bearing Frame Types

2018 ◽  
Vol 28 (4) ◽  
pp. 180-189
Author(s):  
Volodymyr Sakharov ◽  
Oleksandr Lytvyn ◽  
Vasyl Pidlutskyi
Keyword(s):  
Dynamic Behavior ◽  
Strain State ◽  
System Analysis ◽  
Mode Shapes ◽  
Seismic Load ◽  
Seismic Loads ◽  
High Rise ◽  
High Rise Building ◽  
Different Types ◽  
Vertical Bearing

Abstract Paper presents the results of dynamic behavior analysis of a high-rise building under seismic loads as part of the “base-foundation-building” system. Analysis covers different types of reinforced concrete construction with girder frame and non-girder frame. Using modal analysis, paper presents differences in mode shapes and frequencies caused by the presence or absence of girders. Paper also demonstrates variations in the stress-strain state for the vertical bearing structures under the seismic load for different frame types.

Evaluation and selection of curtain wall systems for medium-high rise building construction

2014 ◽  
Vol 32 (4) ◽  
pp. 299-314 ◽  
Author(s):  
Abdul-Mohsen Al-Hammad ◽  
Mohammad A. Hassanain ◽  
Mohammed N. Juaim
Keyword(s):  
Precast Concrete ◽  
Building Construction ◽  
Curtain Wall ◽  
Content Type ◽  
High Rise ◽  
High Rise Building ◽  
First Choice ◽  
Different Types ◽  
Wall System ◽  
Selection Of

Purpose – The purpose of this paper is to present a systematic approach for the evaluation and selection of curtain wall systems for medium-high rise building construction. Design/methodology/approach – The authors have identified the different types of curtain wall systems that are commonly used in the building construction industry in Saudi Arabia; examined the various performance as well as financial and non-financial criteria affecting the evaluation and selection of these systems; and subjected the identified different types of curtain wall systems to several filtering processes, namely feasibility ranking, evaluation by comparison and weighted evaluation to facilitate making a decision on the most suitable system to select. Findings – The analysis of the collected data indicated that the precast concrete curtain wall system is considered to be the first choice. The second choice is the prefabricated brick panel curtain wall system. Originality/value – Curtain walls are the most recognized elements of contemporary structures today. There exists ample variety of materials and designs that could be utilized for the development of these building elements. This paper is of practical value to project owners, architects and design professionals endeavoring on the process of selecting and specifying curtain wall systems in their projects.

scholarly journals Assessment of the Dynamic Behavior of Beam-to-Column Connections in Steel Pallet Racks under Cyclic Load: Numerical Investigation

2018 ◽  
Vol 2018 ◽  
pp. 1-12
Author(s):  
Zhi-Jun Lyu ◽  
Meng Wu ◽  
YuXin Huang ◽  
YiMing Song ◽  
Xiong Cui
Keyword(s):  
Dynamic Behavior ◽  
Cyclic Load ◽  
Seismic Loads ◽  
Fe Modeling ◽  
Cyclic Tests ◽  
Factors Affecting ◽  
Simulation Based ◽  
Different Types ◽  
Geometrical Factors

Steel pallet racks (SPRs) are characterized by boltless beam-column connections (BCCs). The role of BCCs becomes more significant during hazardous conditions such as earthquakes. Due to the great number of beam-end connector types and member geometries, the accurate evaluation of their structural behavior, especially under seismic loads, seems to be very difficult to perform so far. In this paper, the authors present results of simulation based on cyclic tests on different types of industrial rack joints by the finite element (FE) modeling of connections. This paper mainly investigates the BCC geometrical factors affecting the dynamic behavior of braced racks. Design indications are consequently provided in order to guarantee a globally homogenous ductility among different BCC configurations under seismic actions.

INVESTIGATION OF DYNAMIC PROPERTIES OF ELASTOMERIC BEARING COMPONENTS VIA MODAL ANALYSIS

2015 ◽  
Vol 76 (8) ◽  
Author(s):  
A. I. Yusuf ◽  
M. A. Norliyati ◽  
M. A. Yunus ◽  
M. N. Abdul Rani
Keyword(s):  
Modal Analysis ◽  
Dynamic Behavior ◽  
Natural Frequencies ◽  
Dynamic Properties ◽  
Experimental Modal Analysis ◽  
Mode Shapes ◽  
Seismic Loads ◽  
Ground Structure ◽  
Elastomeric Bearing ◽  
Earthquake Load

Elastomeric bearing is a significant device in structures such as in bridges and buildings. It is used to isolate the ground structure (substructure) and the above ground structure (superstructure) from seismic loads such as earthquake load. Understanding the dynamic behavior of the elastomeric bearing in terms of natural frequencies, mode shapes and damping are increasingly important especially in improving the design and the failure limit of the elastomeric bearing. Modal analysis is one of the methods used to determine the dynamic properties of any materials. Hence, the main objective of this research is to determine the dynamic properties of elastomeric bearing components in terms of natural frequencies, mode shapes, and damping via numerical and experimental modal analysis. This method had been successfully performed in investigating the dynamic behavior of rubber and steel shim plate.

Effect of Inclination of Columns on the Change of the Stiffness of a High-Rise Building

2015 ◽  
Vol 769 ◽  
pp. 9-12 ◽  
Author(s):  
Sona Medvecka ◽  
Olga Ivankova
Keyword(s):  
Seismic Loads ◽  
Floor Plan ◽  
High Rise ◽  
High Rise Building ◽  
Plan Analysis ◽  
Horizontal Displacements

This article describes the effect of inclination of columns on the change of stiffness of high-rise buildings with circular floor plan. Analysis was made for the building loaded by forces induced by wind and seismic loads. Various high-rise buildings with columns with different inclinations and buildings with vertical columns were analyzed from the viewpoint of horizontal displacements. The results were compared. The comparison was made with horizontal displacements of the building, where columns were inclined.

scholarly journals Distributed Multiple Tuned Mass Dampers for Wind Vibration Response Control of High-Rise Building

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Said Elias ◽  
Vasant Matsagar
Keyword(s):  
Equations Of Motion ◽  
Vibration Response ◽  
Mode Shapes ◽  
Tuned Mass Dampers ◽  
Response Control ◽  
High Rise ◽  
High Rise Building ◽  
Wind Vibration ◽  
Wind Induced Vibration ◽  
Multiple Tuned Mass Dampers

Multiple tuned mass dampers (MTMDs) distributed along height of a high-rise building are investigated for their effectiveness in vibration response control. A 76-storey benchmark building is modeled as shear type structure with a lateral degree of freedom at each floor, and tuned mass dampers (TMDs) are installed at top/different floors. Suitable locations for installing the TMDs and their tuning frequencies are identified based, respectively, on the mode shapes and frequencies of the uncontrolled and controlled buildings. Multimode control strategy has been adopted, wherein each TMD is placed where the mode shape amplitude of the building is the largest or large in the particular mode being controlled and tuned with the corresponding modal frequency. Newmark’s method is used to solve the governing equations of motion for the structure. The performance of the distributed MTMDs (d-MTMDs) is compared with single tuned mass damper (STMD) and all the MTMDs placed at top floor. The variations of top floor acceleration and displacement under wind loads are computed to study the effectiveness of the MTMDs in vibration control of the high-rise building. It is concluded that the d-MTMDs are more effective to control wind induced vibration than the STMD and the MTMDs placed at top floor.

Dilatation of the High-Rise Building by Inserted Field

2017 ◽  
Vol 738 ◽  
pp. 130-139
Author(s):  
Olga Ivankova ◽  
Marian Stellmach ◽  
Lenka Konecna
Keyword(s):  
Wind Load ◽  
Main Topic ◽  
Seismic Load ◽  
Seismic Acceleration ◽  
High Rise ◽  
High Rise Building ◽  
Structural Solutions

The dilatation of the high-rise building by inserted field is the main topic of this paper. This building contains of two “towers” with different heights (8-storey and 25-storey), which are linked by inserted field. The description of the building and applied loads are shortly mentioned. The paper is mainly focused on the importance of the dilatation and its types, the modelling of inserted field and its structural solutions. The comparisons of horizontal forces due to the wind load and seismic load are presented at the end. The solution was recalculated for four seismic areas in Slovakia, where different values of basic seismic acceleration ar are. Also, the maximum horizontal deflections calculated for three alternatives of the building (without dilatation, with continuous dilatation 50 mm located between two “towers” passing through the foundation, with dilatation by inserted field between two “towers”) due to static wind load are presented here.

scholarly journals Form and functional features of modular floating structures

2019 ◽  
Vol 91 ◽  
pp. 05013 ◽  
Author(s):  
Svetlana Kizilova
Keyword(s):  
System Analysis ◽  
Functional Organization ◽  
Water Environment ◽  
Modular Architecture ◽  
Floating Structures ◽  
High Rise ◽  
High Rise Building ◽  
Functional Features ◽  
Characteristic Features ◽  
Conceptual Research

The article describes the main aspects of form and functional organization of modular architecture on the water. The leading approach to the study is based on the system analysis of the types of modular floating foundations, above-water structures of various configurations and their functions. As a result of the analysis of realized and conceptual projects, two types of modular bases were identified: simple, consisting of repeating geometric forms (square, rectangle, circle, hexagon), and complex. The main typologies of above-water structures are also highlighted: a pavilion, a low-rise and a high-rise building. The study examined the main programs that floating structures provide: residential, public and industrial. Characteristic features of the modular floating structures are drawn on the basis of the identified classifications. The article can be used for practical and conceptual research in the field of modular architecture and structures in the water environment.

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