نتایج جستجو برای: 318 2014 aci
تعداد نتایج: 150949 فیلتر نتایج به سال:
BACKGROUND The aim of the present study is to investigate the clinical relevance of aortic calcification in urolithiasis patients. METHODS Between January 2010 and September 2014, 1221 patients with urolithiasis were treated in Oyokyo Kidney Research Institute and Hirosaki University Hospital. Among these, 287 patients (Stone group) on whom adequate data were available were included in this r...
Abstract Background A series of nonlinear finite element (FE) analyses was performed to evaluate the different design approaches available in literature for reinforced concrete deep beam with large opening. Three models were developed and analyzed using computer software ATENA. The three FE beams made details based on approaches: (Kong, F.K. Sharp, G.R., Magazine Concrete Res_30:89-95, 1978), (...
یکی از انواع سیستم های مقاوم در برابر نیروهای جانبی از جمله نیروی زلزله، سیستم دیوار برشی بتنی می باشد که به دلیل عملکرد مناسب آن در مقابل این نیروها، مورد استفاده ی گسترده در سازه ها قرار گرفته است. در بسیاری از موارد، دیوارهای برشی به دلایل معماری، از جمله درب و پنجره و یا عبور تأسیسات مکانیکی و برقی، دارای بازشو خواهند شد. باز شدگی در دیوار، بر رفتار آن در هنگام مقابله با نیروهای جانبی تأثیر...
Monitoring patterns in biodiversity and phenology have become increasingly important given accelerating levels of anthropogenic change. Long-term monitoring programs have reported earlier occurrence of spring activity, reflecting species response to climate change. Although tracking shifts in spring migration represents a valuable approach to monitoring community-level consequences of climate c...
The paper presents a numerical study on the effects of opening size and location punching shear resistance flat slabs without drop panels reinforcement using ABAQUS. proposes an ABAQUS model that is enable to predict with openings. validated well experimental data in literature. Using model, are then investigated, results compared those predicted by ACI 318-19 TCVN 5574:2018. comparison between...
En este trabajo se realiza un análisis comparativo de la Norma Colombiana Sismorresistente NSR-10 y el reglamento ACI 318-19 (base del próximo título C norma NSR actualmente en desarrollo), dicha comparación detallaron las exigencias técnicas actuales presentes ambos reglamentos para sistemas pórticos concreto reforzado zonas amenaza sísmica alta. Inicialmente realizó entre cuerpo mostrando dif...
Slender concrete walls incorporated into tilt-up construction over the past 60 years have performed remarkably well under out-of-plane wind and seismic loads. While issues associated with seismic wall anchorage gave this form of construction a black-eye in the early days, the concrete walls themselves have always performed very well even as far back as their first use in the early 1900s. Yet th...
Post-earthquake observations and laboratory tests reveal the needs for innovative solutions that can enhance concrete compression ductility in boundary elements of special structural walls. This study proposes a new element design by utilizing hybrid fiber reinforced (HyFRC). One full-scale HyFRC is tested uniaxial compared to three conventional are compliant with ACI-318 codes. Results demonst...
This study evaluates the effect of shear on deflection reinforced concrete (RC) beams subjected to combined bending and shear. A total nine simply supported were manufactured with span-to-depth ratio, tension steel capacity ratio as test variables. The experimental results used evaluate by separating them into flexural deformations. theoretical specimens was calculated using effective moment in...
Cost and CO2 are two factors in the optimum design of structures. This study proposes a modified harmony search methodology for optimization reinforced concrete beams with minimum emissions. The was developed detail by considering all possible combinations variable loads, including dynamic force resulting from earthquake motion. Moreover, time-history analyses were performed, requirements ACI-3...
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