• Proceedings of the Korea Concrete Institute Conference
• /
• 2008.04a
• /
• pp.37-40
• /
• 2008

Many engineers find the way of improving the old building's structural behavior in the remodeling project which is performed using artificial openings for merging two houses. This test was performed to verify the characteristics of coupling beams according to the shape of the openings. One of test specimen has rectangle shape and the other was made by the circle shaped opening and one has coupling member only as slabs. Additionally, three specimens which have openings have 23% ratio in opening area to total wall area. Consequently, solid type which have no opening area shows shear failure. In the case of CW-RBS which have rectangular shaped opening, cracks are developed in coupling beam significantly. And CW-CS which has circular opening failed in shear showing development of diagonal cracks at wall toes and wall mid-height. It is thought that degradation of the wall strength is under the control of the opening shape and coupling beam-wall connection area.

• Journal of the Earthquake Engineering Society of Korea
• /
• v.16 no.2
• /
• pp.15-24
• /
• 2012

Domestic reinforced concrete (RC) apartments have a unique structural system that consists of shear walls and rink members of slabs and lintels. In this study, the nonlinear static analysis of two RC shear wall sub-assemblages, with and without lintels, was conducted using the uniaxial spring model to develop a method for accurately predicting the seismic behavior of domestic RC apartments. In the case of the specimen without lintels, the analytical result successfully represented a simulation of the nonlinear behavior of the specimen in accordance with the test result. On the other hand, in the case of the specimen with lintels, the analysis resulted in underestimating the nonlinear behavior of the specimen compared to the test result, because the coupling effect could not be predicted from the earlier loading cycle.

• 베이커리
• /
• no.4 s.453
• /
• pp.128-131
• /
• 2006

• 베이커리
• /
• no.2 s.427
• /
• pp.86-87
• /
• 2004

• 베이커리
• /
• no.1 s.438
• /
• pp.144-148
• /
• 2005

• 베이커리
• /
• no.7 s.432
• /
• pp.87-91
• /
• 2004

• The Safety technology
• /
• no.54
• /
• pp.39-39
• /
• 2002

• 베이커리
• /
• no.12 s.413
• /
• pp.112-113
• /
• 2002

높이 나는 갈매기가 멀리 본다고 했던가. 배우고 싶은 게 너무 많아 고민이라는 그녀들의 꿈은 넓고 푸르다. 졸업과 함께 사회로의 비상(飛上)을 앞두고 있는 수원여대 제과제빵과 3 인방의 대화를 잠시 엿들어본다,

• Journal of the Earthquake Engineering Society of Korea
• /
• v.14 no.6
• /
• pp.55-65
• /
• 2010

The purpose of this experimental study is to evaluate the seismic performance of a 2 story RC shear wall system by the static reversal loading test. The lower 2 stories of the prototype structure were selected, and the specimens of this study were comprised of a T-type wall with an opening. The specimens were reduced to about 60% of the full scale size and were constructed to measure the result of the experimental variable regarding the existence of a lintel beam. To perform this study, the static repeated loading test was performed. According to the existence or absence of a lintel beam, the structural capacities and behavioral differences of the shear wall system were compared. The test results of this study showed that the specimen with a lintel beam underwent the seismic performance with an ultimate strength and ductility capacity better than the specimen without a lintel beam.

• Journal of the Korea institute for structural maintenance and inspection
• /
• v.12 no.5
• /
• pp.152-160
• /
• 2008

Since wall system apartment used the shear wall as main lateral resistance member, installation of openings which causing section loss of walls may cause significant problem to structure. Also, there are few studies for inducing coupling beam or slabs which are occurred by installing openings. Therefore, this study planned isolated 2-story shear walls which are reduced three half-scale specimen to find out walls behavior characteristic. The test results showed that strength reduction caused by loss of effective section of walls and different result of stiffness and energy dissipation regarding to the coupling beam and coupling slabs.