8 research outputs found
DEVELOPMENT OF SECTION CLASSIFICATION CRITERION AND ULTIMATE FLEXURAL EQUATION FOR COMPOSITE I-GIRDERS
vi, 157p学位記号番号 : 博理工甲第598号The steel-concrete composite girder bridge is one of the most commonly used bridges for footway, highway and railway bridges, and many nvestigations have been conducted on the section classification and the ultimate load-carrying capacity of unshored composite bridge girder section. On the basis of these investigations, same classification limits for steel and composite sections have been proposed and the effect of initial bending moment in unshored construction has not been accounted. Furthermore, the ultimate flexural strength of composite girders with compact sections is reduced from its full plastic moment capacity due to crushing of concrete. This reduction of the ultimate flexural strength is not considered in Japanese codes. A research is conducted in two stages to examine the above design limitations related to composite bridge girders to provide ultimate limit state design provisions to the bridge engineers in Japan. …博士の専攻分野の名称 : 博士(学術)
指導教員: 埼玉大学大学院理工学研究科教授 山口宏樹・奥井義昭textapplication/pdfthesi
Earthquake Response of Vehicles Parked in a Mechanical Multi-storey Parking Facility
During an earthquake, vehicles (passenger cars) parked in mechanical parking garages built on skyscrapers vibrate more in response to the earthquake than do vehicles parked on the ground. In such cases, a vehicle mounted on a pallet and receiving a large seismic response transferred through the building will perform a left-right lateral movement on the pallet. Once the force of the lateral movement exceeds a certain measurement, the pallet will crash into the stopper installed in the parking garage, and the resulting impact will be transmitted to the garage structure. This paper had attempts to define numerically the magnitude of this impact, using seismic response simulation calculations.departmental bulletin pape
Ultrasound Assessment of Kidney Volume in Patients with Acute Decompensated Heart Failure: A Predictor of Diuretic Resistance
[Background]Diuretics are essential for treating acute decompensated heart failure (ADHF), but the response is inconsistent. This study aimed to clarify whether kidney volume as assessed by ultrasound (US) predicts diuretic resistance in patients with ADHF. [Methods]We enrolled 29 patients with ADHF and 32 controls. Height-adjusted kidney volume was assessed by US. We divided patients into two groups based on the median value of total daily use of furosemide (intravenous dose plus 0.5 × oral dose of furosemide equivalents) during 3 days from admission. [Results]Patients with ADHF had a significantly smaller left kidney volume than did control subjects (27.7 ± 10.0 vs. 32.8 ± 8.8 mL/m, P < 0.05). Patients in the highdose furosemide group (? 51.7 mg/d) had a significantly lower estimated glomerular filtration rate (eGFR) and a significantly smaller kidney volume than did those in the low-dose furosemide group (eGFR: 43.9 ± 20.4 vs. 60.8± 21.6 mL/min/1.73 m2, left kidney volume: 23.2 ± 5.2vs. 32.6 ± 11.0 mL/m, right kidney volume: 26.5 ± 7.5vs. 32.6 ± 7.9 mL/m, all P < 0.05). Multivariate logistic analysis showed that left kidney volume, but not eGFR,was independently associated with the requirement of high-dose furosemide (odds ratio: 0.856, 95% confidence interval: 0.735?0.997, P < 0.05). [Conclusion]Kidney volume as assessed by US is a useful predictor of diuretic resistance in patients with ADHF.journal articl
Wood Deformations Due to Growth Stress Release
text紀要論文 / Departmental Bulletin Paperdepartmental bulletin pape
