نتایج جستجو برای: reinforced concrete structure
تعداد نتایج: 1663094 فیلتر نتایج به سال:
We investigate the effect of steel plate lining at the rear face of the reinforced concrete panel on the ballistic properties using the semi-empirical model. We determine the structure of the two-layered shield that provides the maximum critical velocity for a given area density and depends on the mechanical properties of concrete and characteristics of the reinforcement. It is found that the o...
Conventional analysis and design of reinforced concrete beams under blast load requires a long process. In addition to being time consuming, this method does not determine the extent of the influence of the geometric parameters of the beam and the load. To overcome this problem, in this research, the effect of each of these parameters is investigated using the mathematics response surface metho...
cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...
With the increase in the number of terrorist incidents worldwide, the resistance of structures, especially concrete structures, to explosions and their effectiveness under blast loads is of great importance. Over the past few decades, these terrorist attacks have left a lot of financial and human life damage around the world. The result of this event, have been Feeling the more need engineers f...
In order to study the basic mechanical property of the new honeycombed-core girderless floor in cast-in-place reinforced concrete, and similarities and differences of the structural performance compared with traditional floor, we carried out the destructive stage loading test on large-scale corner columns supported reinforced concrete honeycombed-core girderless floor. And the thesis conducted ...
a reinforced concrete member in which the total span or shear span is especially small in relation to its depth is called a deep beam. in this study, a new approach based on the adaptive neural fuzzy inference system (anfis) is used to predict the shear strength of reinforced concrete (rc) deep beams. a constitutive relationship was obtained correlating the ultimate load with seven mechanical a...
امروزه خطر انفجار بر روی سازه ها به عنوان یک حادثه تصادفی یا عمل خرابکارانه رو به افزایش است. یکی از روش های ایمن سازی سازه ها در برابر بار انفجار استفاده از سازه های محافظ می باشد. دیوارهای محافظ بتن مسلح یکی از سازه های کارامد و متداول در مقابله با بارهای انفجاری می باشند. به دلیل هزینه بر و طاقت فرسا بودن تحقیقات آزمایشگاهی پدیده انفجار، مدل سازی های نرم افزاری و عددی یکی از روش های مطلوب و ...
there is a worldwide interest in using fibers of different types in concrete mixtures. in this regard, as the use of pet fibers has gradually increased during the last decade, this study aims to investigate the effects of pet fibers on the mechanical properties of hardened concrete and the workability of fresh concrete. to this end, different contents of pet fibers (pc= %0, %0.5, %1 and %1.5) a...
: in the present paper, lessons are learnt from ant society so that humankind can optimize his engineering issues. as an example of such issues, a reinforced concrete retaining wall for which the application of optimization can reduce the costs involved is considered. traditional design procedure for reinforced concrete retaining walls is unable to design an optimized wall unless a large trial ...
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