• Smart Structures and Systems
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• 제13권6호
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• pp.891-899
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• 2014

Over the past several decades, substantial amounts of sensors and sensing systems have been developed for civil infrastructure systems. This special issue focuses on state-of-the-art robotics and automation technologies, including construction automation, robotics, instrumentation, monitoring, inspection, control, and rehabilitation for civil infrastructure. The issue also covers construction informatics supporting sensing, analysis and design activities needed to operate smart and sustainable civil infrastructure. Examples include robotic systems applied to civil infrastructure and equipped with various sensing technologies, such as optical sensors, laser sensors, wireless sensors, multi-sensor fusion, etc. This special issue is published in an effort to disseminate current advances of various robotics and automation technologies for civil infrastructure and built environment.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2005년도 학술발표회(1)
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• pp.702-703
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• 2005

• Structural Engineering and Mechanics
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• 제34권2호
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• pp.281-284
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• 2010

• 한국지반공학회지:지반
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• 제23권4호
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• pp.14-24
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• 2007

• 공학교육연구
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• 제14권5호
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• pp.53-60
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• 2011

This paper deals with the early history of the British civil engineers as a group in terms of where they originated from, how they emerged as a profession in the British society during the First Industrial Revolution, and when they began to be educated at the formal higher education institution. Eventually this paper intends to seek for something like a British style of civil engineering.

• Steel and Composite Structures
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• 제52권2호
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• pp.183-197
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• 2024

Not all structural columns maintain a vertical orientation. Several contemporary building structures have inclined columns, introducing distinct challenges, particularly in buckling behavior. This study examines the buckling behavior of inclined, thin-walled steel bundled columns, differing from typical vertical columns. Using specimens with three tubes welded to plates linearly aligned at the top and triangularly at the bottom, tests indicated that buckling capacity increases with tube wall thickness and diameter but decreases with column height. Inclined tubes in bundled columns showed improved buckling resistance over vertical ones. Results were verified against standard steel design guidelines to assess their predictive accuracy.

• Computers and Concrete
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• 제24권6호
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• pp.489-498
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• 2019

The thermo-mechanical bending behavior of the antisymmetric cross-ply laminates is examined using a new simple four variable trigonometric plate theory. The proposed theory utilizes a novel displacement field which introduces undetermined integral terms and needs only four variables. The validity of the present model is proved by comparison with solutions available in the literature.

• Earthquakes and Structures
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• 제9권2호
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• pp.431-453
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• 2015

A destructive earthquake, the magnitude of this earthquake was 7.2, hit Van, Turkey on October 23, 2011. After this devastating earthquake, a moderate earthquake which had 5.7 magnitude on November 9, 2011 occurred in Edremit, Van. These earthquakes caused heavy damages and collapses in many reinforced concrete buildings with loss of lives. In this paper, characteristics of ground motions of these earthquakes were studied and, deficiencies in structural elements and engineering faults such as poor workmanship and quality of construction, soft and weak stories, strong beam-weak column, short column, large overhang, hammering and unconfined gable wall were investigated. According to the observations, it was seen that, low quality of structural materials, lack of engineering services, inappropriate design and construction with insufficient detailing of the structural elements were the main reasons of heavy damages.

• 공학교육연구
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• 제13권6호
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• pp.152-163
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• 2010

토목공학은 사회와 인류 발전에 필요한 사회기반시설물의 건설과 관리를 주로 담당해 왔던 학문이기 때문에 고대 사회로부터 지속적으로 발전해 왔지만 그 변화의 속도나 첨단기술 도입의 측면에서는 다소 보수적인 측면이 있다. 또한 사회 인프라 전반을 다루기 때문에 구조, 지반, 수공, 환경, 측량, 건설관리 등과 같은 매우 광범위한 분야를 포함하게 된다. 주로 시장의 이익을 주요 목적으로 하는 제조업 기반의 학문 분야들, 예컨대 기계공학, 화학공학, 재료공학과는 다른 특성을 갖게 된다. 따라서 타 공학전공 분야에서 활용되고 있는 종합설계 개념을 공공기반의 이익을 목적으로 하는 토목공학 분야에 그대로 적용하는 데 는 다소 문제가 있을 수 있다고 본다. 그러므로 본 논문에서는 현재 연세대학교 사회환경시스템공학부에서 운영하고 있는 종합 설계과목의 교육내용과 변화, 그리고 운영방식을 소개.설명하여 토목공학 분야에 적합한 종합설계과목의 운영방법을 논의하고자 한다. 또한 학부 수강생들의 강의 평가결과 및 학습성과를 분석하여 개선된 종합설계과목의 타당성을 객관적으로 평가하고자 하였다.

• Geomechanics and Engineering
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• 제30권2호
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• pp.201-210
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• 2022

This paper presents a study regarding the influence of various water levels on the characteristics of subgrade mud pumping through a self-developed test instrument. The characteristics of mud pumping are primarily reflected by axial strain, excess pore water pressure, and fine particle migration. The results show that the axial strain increases nonlinearly with an increase in cycles number; however, the increasing rate gradually decreases, thus, an empirical model for calculating the axial strain of the samples is presented. The excess pore water pressure increases rapidly first and then decreases slowly with an increase in cycles number. Furthermore, the dynamic stress within the soil first rapidly decreases and then eventually slows. The results indicate that the axial strain, excess pore water pressure, and the height and weight of the migrated fine particles decrease significantly with a low water level. In this study, when the water level is 50 mm lower than the subgrade soil surface, the issue of subgrade mud pumping no longer exist.