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데크플레이트를 사용한 완전 합성보의 휨내력 프로그램 개발
김요숙,김도범,남윤선,채흥석,최성모 한국복합신소재구조학회 2011 복합신소재구조학회 학술발표회 Vol.2011 No.04
The object of this study is to develop a computer program that can help practical engineers to calculate sectional modulus and plastic moments of full composite girders with deck plates under positive and negative bending moments. The sectional modulus are equivalent moments of inertia for elastic analysis and plastic section modulus for plastic analysis. Results of Hwang's research are used to verify this developed program. AIK, KBC 2005 and 2009 are used to define effective widths of RC slab and to calculate positive plastic moments. For calculating negative plastic moments, this study proposed stress blocks and their equations. The developed program will be added about partial shear interactions and deflections of composite girders and finally proposed as GUI environment.
김요숙,김상철 원광대학교 생체재료·매식연구소 1999 원광생체재료·매식 Vol.8 No.1
The purpose of this study was to investigate the relationship between the space discrepancy of the mandibular dentition and carniofacial morphology in adults with good Angle class I occlussion. Dental casts of normal group, crowded group and spaced group were selected on the basis of dental crowing and spacing. Subjects with excessive space to accomodate the lower teeth were classified as spaced group(39). Subjects with a space discrepancy of more than 4mm were classified as crowded group(45). Normal subjects had little or no dental crowding and spacing(40). Various skeletodental measurements in lateral cephalograms were evaluated and compared by ANOVA, Pearson correlation analysis and multiple stepwise regression analysis. The results were as follows: 1. ANB angle was larger in crowded group than in spaced group. 2. Maxilla and mandible in crowded group were inclined more downward and forward than in spaced group, so crowded group was found to have vertical tendency. 3. Anterior cranial base length and mandibular body length were longer in spaced group than in crowded group. 4. According to the multiple stepwise regression analysis with space discrepancy as dependent variable, 40% of variance of space discrepancy could be explained by ANB angle, anterior facial height and ramus height. Multiple regression equation was as follows space discrepancy = 46.51 - 2.51ANB - 0.58AFH + 0.65RH
합성반강접 보-기둥 접합부에 대한 M-θ 데이타베이스 시스템
김요숙,김선희,오헌근,최성모 한국복합신소재구조학회 2011 복합신소재구조학회 학술발표회 Vol.2011 No.04
This study aimed at construction of text and graphic database for moment-rotation curves of partially restrained composite beam-to-column connections. key words The M-θ data or figures under monotonic or cyclic tests are made as text files. Also, Eurocode 3 classification is added to the M-θ curve to verify as semi-rigid connections. For structural analysis, linear rotational stiffeness or nonlinear M-θ curves are transformed three-parameter power model. Although this database has some limitation, it will be used for further PRCC researches and tests.
세립형 고강도 구조용 강재를 이용한 압축재의 실험적 평가
김요숙,임성우,장인화 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2(구조계)
As for the experimental check, stub and long column tests were carried out. Comparison tests for local and global buckling strength evaluation of box-type and H-shaped welded columns were performed with variable width-thickness ratio. Two kinds of steels were used for tests: High strength steel as a material with yield plateau and same grade steel as a material with continuous yielding. All of the specimens were satisfied with design codes regardless of exceeding the design limits. It means that the current width-thickness ratios may apply to both of the material with yield plateau and that with continuous yielding.
세립형 고강도 구조용 강재를 이용한 보-기둥재의 실험적 평가
김요숙,임성우,장인화 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2(구조계)
As the structure becomes higher and longer-spanned nowadays, the need for strong and reliable structural material becomes greater. In order to apply high strength steel to the building structure, adaptability of the current design codes to the design with high strength steel has to be reviewed. Beam-column tests subjected to the simple and the combined bending and axial compressive load were performed with variable slenderness ratio. The ultimate strengths were satisfied with both of ASD and LHFD codes regardless of whether characteristic of yield phenomenon is continuous yielding or not.
김요숙,정애진,강경화,김상철 대한치과교정학회 2003 대한치과교정학회지 Vol.33 No.4
치열 공간 부조화에 영향을 미치는 골격 및 치성요소를 알아보기 위하여 하악 치열궁내 총생을 보이는 성인 45명과 공극을 보이는 성인 39명의 Ⅰ급 부정 교합 환자와 정상적인 배열을 갖는 성인 40명을 선정하여 측모 두부방사선사진과 모형을 분석하여 다음과 같은 결론을 얻었다. 1.공극군보다 총생군의 ANB각이 컸다. 2.공극군보다 총생군이 하악골 및 상악골의 전하방 경사가 커서 안모의 수직적 양상이 심했다. 3. 총생군보다 공극군이 전두개저와 하악체 길이가 컸다. 4. ANB 각, 전안면 고경과 하악지 길이가 공간 부조화 양의 예측에 기여하며, 다음과 같은 회귀방정식이 산출되었다. space discrepancy = 46.51 - 2.51ANB - 0.58AFH + 0.65RH (R² = 0.40) The purpose of this study was to investigate the relationship between the space discrepancy of the mandibular dentition and craniofacial morphology in adults with good Angle class I occlusion. Dental casts of normal group, crowded group and spaced group were selected on the basis of dental crowding and spacing. Subjects with excessive space to accomodate the lower teeth were classified as spaced group(39). Subjects with a space discrepancy of more than 4mm were classified as crowded group(45). Normal subjects had little or no dental crowding and spacing(40). Various skeletodental measurements in lateral cephalograms were evaluated and compared by ANOVA, Pearson correlation analysis and multiple stepwise regression analysis. The results were as follows : 1. ANB angle was larger in crowded group than in spaced group. 2. Maxilla and mandible in crowded group were inclined more downward and forward than in spaced group, so crowded group was found to have vertical tendency. 3. Anterior cranial base length and mandibular body length were longer in spaced group than in crowded group. 4. According to the multiple stepwise regression analysis with space discrepancy as dependent variable, 40% of variance of space discrepancy could be explained by ANB angle, anterior facial height and ramus height. Multiple regression equation was as follows Space discrepancy=46.51-2.51ANB-0.58AFH+0.65RH
ACT II 기둥 합성반강접 골조의 탄소성해석에 관한 연구
김요숙(Kim Yo-Suk),김도범(Kim Do-Bum),김선희(Kim Sun-Hee),염경수(Yem Kung-Su),최성모(Choi Sung-Mo) 대한건축학회 2011 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.31 No.2(구조계)
New shape Welded Built-up Square Column, so-called ACT(Advanced Construction Technology) II, was developed for the practical implementation using a combination of eight bent single-members. To evaluate the beam-to-column connection performance, the ACT II column-to-beam test specimen was built and tested under the cyclic loading program according to KBC 2009. The hysteresis curve of the test results demonstrated as a partially restraint composite connection(PRCC). Therefore, the moment-rotation relationship based on test results was proposed in this study using three-parameter power model. The elasto-plastic frame analysis was performed with the sectional properties of members and the characteristics of beam-to-column connections. Finally, analytical results by the PHINGE program and experimental results will be compared to verify this method.