Author: Norathape Choopool
Publisher:
ISBN:
Category :
Languages : en
Pages : 542

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Book Description

Author: Omar El Kafrawy
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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Book Description
During the last few decades, the concepts and procedures of seismic design of buildings have evolved significantly. Traditionally, seismic design was based on providing the structure with the strength it needs to resist equivalent lateral forces that represent the earthquake induced forces. This methodology has proven to be inefficient in providing the target level of seismic performance in all case scenarios. The new methodology in seismic design, performance-based design, aims at designing the structure to achieve the expected performance levels under different levels of seismic hazard. Although this goal is still not fully attained, several developments have taken place towards it. The latest edition of the National Building Code of Canada (NBCC 2005) requires the use of dynamic analysis for the seismic design, except in the case of short to medium height simple buildings with regular geometry where the use of the equivalent static load method is still allowed. In this study, three moment resisting frame buildings assumed to be located in Vancouver, British Columbia are designed based on the equivalent static load method of the NBCC 2005 and their performance is evaluated using nonlinear dynamic time-history analysis. Multiple ground motion records corresponding to different seismic hazard levels are used in the analysis. The effect of infill panels on the seismic response is studied as well. The results show that the design is satisfactory and, in some cases, conservative. The results also show that infill panels, in most cases, enhance the dynamic response of the buildings, while in some cases they may have a negative impact on it.

Author: Sheila Belayutham
Publisher: Springer Nature
ISBN: 981167924X
Category : Technology & Engineering
Languages : en
Pages : 1515

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Book Description
This book compiles papers presented during the 5th International Conference on Sustainable Civil Engineering Structures and Construction Materials (SCESCM) held virtually in December 2020. This is the fifth edition of this conference series; the theme for the 5th SCESCM is “Transforming the World, Foster the Sustainable Development Goals (SDGs),” and it focuses on various issues, novel findings, as well as developments in the area of civil and infrastructure, conforming to the SDGs. This book caters to postgraduate students, researchers, and practitioners involved in advocating and embedding sustainability in various phases of design, construction and maintenance of civil engineering structures and infrastructure facilities.

Author: Michael James Richard
Publisher:
ISBN:
Category :
Languages : en
Pages : 324

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Abstract: Reinforced concrete moment-resisting frames are structural systems that work to resist earthquake ground motions through ductile behavior. Their performance is essential to prevent building collapse and loss of life during a seismic event. Seismic building code provisions outline requirements for three categories of reinforced concrete moment-resisting frames: ordinary moment frames, intermediate moment frames, and special moment frames. Extensive research has been conducted on the performance of special moment-resisting frames for areas of high seismic activity such as California. More research is needed on the performance of intermediate moment frames for areas of moderate seismicity because the current code provisions are based on past observation and experience. Adapting dynamic analysis software and applications developed by the Pacific Earthquake Engineering Research (PEER) Group, a representative concrete intermediate moment frame was designed per code provisions and analyzed for specified ground motions in order to calculate the probability of collapse. A parametric study is used to explore the impact of changes in design characteristics and building code requirements on the seismic response and probability of collapse, namely the effect of additional height and the addition of a strong column-weak beam ratio requirement. The results show that the IMF seismic design provisions in ACI 318-08 provide acceptable seismic performance based on current assessment methodology as gravity design appeared to govern the system. Additional height did not negatively impact seismic performance, while the addition of a strong-column weak-beam ratio did not significantly improve results. It is the goal of this project to add insight into the design provisions for intermediate moment frames and to contribute to the technical base for future criteria.

Author: YeongAe Heo
Publisher:
ISBN:
Category :
Languages : en
Pages : 408

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Author: Sze-Man Wong
Publisher:
ISBN: 9781361077122
Category :
Languages : en
Pages :

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Book Description
This dissertation, "Seismic Performance of Reinforced Concrete Wall Structures Under High Axial Load With Particular Application to Low-to Moderate Seismic Regions" by Sze-man, Wong, 黃思敏, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Abstract of thesis entitled Seismic Performance of Reinforced Concrete Wall Structures under High Axial Load with Particular Application to Low-to-Moderate Seismic Regions Submitted by Wong Sze Man For the degree of Master of Philosophy at The University of Hong Kong in December 2005 Hong Kong is a densely-populated city that is located in a region classified as having low-to-moderate seismicity. Previous studies suggest that it is not unlikely for Hong Kong to be subject to a far-field, large magnitude earthquake. Considering the potential economic and property loss to the territory, proper assessments of buildings in Hong Kong's urban area are urgently required. Accordingly, the aim of this study is to evaluate the seismic performance of reinforced concrete (RC) shear walls, a common structural element adopted in the construction of medium-rise residential buildings in Hong Kong. This thesis has identified axial load ratio (ALR) as an indispensable parameter for consideration in seismic performance evaluation. The ALRs in the wall elements of the medium-rise residential buildings were investigated. It was found that the ratios ranged up to 0.3 and 0.45 for shear-wall and core-wall buildings respectively. Effective yield curvature was extensively analyzed using a FORTRAN program. An empirical model, which is valid to the practical range of ALRs concluded, is proposed to provide quick estimations to the effective yield curvature that are useful for assessment purposes when combined with the Yield Point Spectra (YPS). The behaviour of RC walls fabricated in accordance with common construction practice in Hong Kong was critically examined experimentally. In addition to conventional instrumentations, the optical Digital Speckle Correlation Method (DSCM) was adopted in the study. The effects of ALR and confinement on failure mode, ductility capacity, strength degradation, and axial load capacity were investigated. It was found that the effect of ALR should not be neglected in a seismic assessment. In addition, the performance of the specimens before and after the retrofitting measures was also compared, and advantages of using the DSCM were identified. Analysis of the research findings prompts the need for a revision of the performance level criteria that cater for high ALR scenarios. Based on the revised criteria, a case study was conducted, which compared the seismic capacity and demand on YPS. Displacement ductility demands were negligible when ALRs were low, but high ALR cases were accompanied by an Immediate Occupancy or Life Safety performance level. (349 words) DOI: 10.5353/th_b3473953 Subjects: Concrete walls - Earthquake effects Shear walls - Earthquake effects Concrete walls - Testing Shear walls - Testing

Author: FIB – International Federation for Structural Concrete
Publisher: FIB - Féd. Int. du Béton
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 1168

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Book Description

Author: Gang Wu
Publisher: Springer Nature
ISBN: 9811968217
Category : Technology & Engineering
Languages : en
Pages : 336

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Book Description
This book systematically presents these findings for the first time, focusing on the composition, force mode, structural characteristics, performance advantages, and calculation methods for each new structural system, and comparing each one with traditional structural systems. In view of the persistent problems in the current equivalent cast in situ precast concrete structural systems and the development of non-equivalent cast in situ precast concrete structure systems, Southeast University and Harbin Institute of Technology have conducted extensive research and proposed several new types of precast concrete structural systems. Their findings in this regard can promote the development of basic theories and technologies for building industrialization, accelerate the advancement of China's building industrialization, promote the application of precast building technology, and realize the concept of green building.

Author: Building Seismic Safety Council (U.S.)
Publisher:
ISBN:
Category : Building laws
Languages : en
Pages : 212

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Book Description

Author: Building Seismic Safety Council (U.S.)
Publisher:
ISBN:
Category : Buildings
Languages : en
Pages : 220

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Book Description