Development of Quasi-Static Loading Protocols for Drift-Sensitive Nonstructural Building Components

2009 ◽  
Author(s):  
Behrouz Shafei ◽  
Farzin Zareian
Keyword(s):  
Static Loading ◽  
Building Components ◽  
Nonstructural Building Components

Shake table testing of bookcase – partition wall systems

2004 ◽  
Vol 31 (4) ◽  
pp. 664-676 ◽  
Author(s):  
Andre Filiatrault ◽  
Steven Kuan ◽  
Robert Tremblay
Keyword(s):  
Fragility Curves ◽  
Companion Paper ◽  
Shake Table ◽  
Free Standing ◽  
Shake Table Tests ◽  
Partition Wall ◽  
Partition Walls ◽  
Building Components ◽  
Functional Components ◽  
Nonstructural Building Components

This paper describes the seismic (shake table) tests conducted on bookcase – partition wall systems. These nonstructural building components can be considered acceleration sensitive (or motion sensitive) rather than drift sensitive. The shake table floor motions used for the seismic testing are described in a companion paper. One bookcase fully loaded with books and two different cantilevered partition wall systems were considered in the shake table tests. Nine different configurations of these free-standing nonstructural building components were tested. For each configuration, three different seismic hazard levels were considered for the motions at the second floor level of a six-storey building designed for two different densely populated Canadian cities (Montréal and Vancouver). A total of 485 shake table tests were conducted in this experimental investigation. The experimental results indicated that pounding between unanchored bookcases and partition walls is very beneficial to the dynamic response of the bookcases, as it prevents resonance from occurring. Also, the seismic performance of bookcases improved dramatically by the proper installation of seismic restraint systems. Experimental fragility curves for overturning of tall bookcases are presented.Key words: bookcases, earthquakes, fragility, interior partition walls, nonstructural, operational and functional components, pounding, seismic restraints, shake table.

scholarly journals THE RISKS OF NONSTRUCTURAL BUILDING COMPONENTS IN THE CONTEXT OF EARTHQUAKE AND PEDESTRIANISED STREETS IN HISTORIC CITY CENTERS: ISTANBUL BEYOGLU CEZAYIR STREET CASE

2021 ◽  
Vol 11 (2) ◽  
pp. 541-554
Author(s):  
İlke CİRİTCİ ◽  
Gül YÜCEL
Keyword(s):  
Research Result ◽  
Poor Performance ◽  
Economic Losses ◽  
Loss Of Function ◽  
Historical Building ◽  
Nonstructural Components ◽  
Factors Affecting ◽  
Functional Changes ◽  
Building Components ◽  
Nonstructural Building Components

In most of historical cities, some streets have been pedestrianised in order to facilitate pedestrian circulation. This situation affects functions of historical buildings and increases also pedestrian density of streets. Many historical cities in the world are threatened by earthquake. It is important to consider earthquake related disasters for the pedestrianization practices in historical cities. The historical urban centers, most of have masonry buildings, may not perform well enough to overcome the risks. Building structural system, construction date, number of storey, maintenance and repair conditions and physical changes due to functional changes are similar factors affecting the performance of the building earthquakes. Although buildings have performed sufficiently structurally against earthquakes, nonstructural components damages may occur. In case of earthquake, poor performance of nonstructural components may cause loss of function, economic losses and especially loss of life and injury. The nonstructural components of building such as parapet, roof, chimney, eave, canopy and windows are considered as risk factors that may cause injuries during earthquake. In this study, nonstructural building components that may occur possibility of injury are discussed and brought forward proposals for pedestrianised streets safety located in Cezayir Street, Istanbul. The main factors affecting the choice of Cezayir Street are; its close location to the most important cultural center of Istanbul; Istiklal Avenue, being a renovated area and the intensive street usage. The nonstructural building components of historical building in the Cezayir Street were evaluated using data obtained on-site observation of building façade as parapets, ornaments, eaves, chimneys, windows and canopies. According to the research result, it can be said that the façade glazing which is located at mostly additional flats on the buildings may lead to risk during earthquake.

scholarly journals Utilization of Brine Sludge in Nonstructural Building Components: A Sustainable Approach

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Mridul Garg ◽  
Aakanksha Pundir
Keyword(s):  
Fly Ash ◽  
Construction Materials ◽  
Alternative Solution ◽  
Engineering Properties ◽  
Reaction Products ◽  
The Matrix ◽  
Building Components ◽  
Waste Particles ◽  
Brine Sludge ◽  
Nonstructural Building Components

The characterization and influence of brine sludge on the properties of cement-fly ash-sludge binders are presented. The reaction products formed during the hydration of binder provide an interlocking framework to physically encapsulate the waste particles and are responsible for the development of strength. The utilization of brine sludge in making paver blocks and bricks and the effect of sludge concentration on the engineering properties of these products are also discussed. These results clearly exhibited that brine sludge up to 35 and 25% can safely be utilized for making paver blocks and bricks, respectively. The leachability studies confirm that the metals ions and impurities in the sludge are substantially fixed in the matrix and do not readily leach from there. The utilization of brine sludge in construction materials could serve as an alternative solution to disposal and reduce pollution.

Microstructural and fractographic characterization of B4C-Al cermets tested under dynamic and static loading

1989 ◽  
Vol 47 ◽  
pp. 562-563
Author(s):  
Gyeung Ho Kim ◽  
Mehmet Sarikaya ◽  
D. L. Milius ◽  
I. A. Aksay
Keyword(s):  
Thin Film ◽  
Mechanical Properties ◽  
Fracture Toughness ◽  
Static Loading ◽  
Carbon Deposition ◽  
Full Density ◽  
Unique Combination ◽  
Strong Component ◽  
Reaction Products

Cermets are designed to optimize the mechanical properties of ceramics (hard and strong component) and metals (ductile and tough component) into one system. However, the processing of such systems is a problem in obtaining fully dense composite without deleterious reaction products. In the lightweight (2.65 g/cc) B4C-Al cermet, many of the processing problems have been circumvented. It is now possible to process fully dense B4C-Al cermet with tailored microstructures and achieve unique combination of mechanical properties (fracture strength of over 600 MPa and fracture toughness of 12 MPa-m1/2). In this paper, microstructure and fractography of B4C-Al cermets, tested under dynamic and static loading conditions, are described.The cermet is prepared by infiltration of Al at 1150°C into partially sintered B4C compact under vacuum to full density. Fracture surface replicas were prepared by using cellulose acetate and thin-film carbon deposition. Samples were observed with a Philips 3000 at 100 kV.

CREDO RADON UA – INFORMATION MODEL FOR CALCULATION OF ROAD CONSTRACTION

2019 ◽  
pp. 34-42
Author(s):  
Volodymyr Karedin ◽  
Nadiya Pavlenko
Keyword(s):  
Design Process ◽  
Static Loading ◽  
Computer Aided Design ◽  
Experimental Studies ◽  
Construction Materials ◽  
Residual Deformation ◽  
Road Construction ◽  
Information Support ◽  
Existing Structures ◽  
Road Pavement

CREDO RADON UA software provides an automated calculation of the strength of the pavement structures of non-rigid and rigid types, as well as the calculation of the strengthening of existing structures. In the article, one can see the main features and functionality of the CREDO RADON UA software, the main points in the calculations according to the new regulations. Information support of the design process includes necessary databases, informational and helping materials that make up the full support of the pavement design process. The concept of CREDO RADON UA 1.0 software is made on the use of elasticity theory methods in calculations of initial information models of pavements. Performing optimization calculations, the roadwear in CREDO RADON UA is designed in such a way that no unacceptable residual deformation occurs under the influence of short-term dynamic or static loading in the working layer of the earth bed and in the structural layers during the lifetime of the structure. The calculation algorithms were made in accordance with the current regulatory documents of Ukraine. CREDO RADON UA software allows user to create information bases on road construction materials and vehicles as part of the traffic flow for calculations. The presented system of automated modeling makes it easier for the customer to control the quality of design solutions, to reasonably assign designs to layers of reinforcement, to quickly make comparisons of calculations of different designs for the optimal use of allocated funds. Prospects for further improvement of the program should be the results of theoretical and experimental studies on filling the databases, which are used as information support for automated design of road structures. Keywords: CREDO RADON UA, road, computer-aided design, repair project, road pavement, strengthening, construction, rigid pavement, elasticity module, a transport stream, calculation method, information support, dynamic or static loading.

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