Застосування вдосконаленого методу розрахунку похилих перерізів залізобетонних балок
Journal Title: Вісник Національного університету "Львівська політехніка". Серія "Теорія та практика будівництва" - Year 2016, Vol 0, Issue 844
Abstract
The priority task for researchers of building structures is developing methods of calculation, which would allow performing constructions calculations with higher accuracy, preserving the reliability of the design. This especially concerns of calculation inclined cross sections of reinforced concrete beams given their sharp, sudden and brittle fracture and difficult stress strain state. Improving methods for calculating will provide the lower expense of materials when designing reinforced concrete structures and allow more efficient using all elements that make the construction. In this paper an improved methodology for calculating inclined cross sections of concrete structures where transverse reinforcement existent or no, and its testing on similar experimental samples of other researchers is proposed. Statistical testing data of calculation relationships shows their convergence with experimental data and provides conditions for their application at designing or assessment of stress-strain state of inclined cross sections of reinforced concrete constructions. Such verification is showed higher convergence than method of calculation according to current norms. It was selected 16 test samples, which destruction was according to the scheme for shear force. According to the results of theoretical researches it was determined that the discrepancy between the calculations for existing norms and the experiment is over 49,4 %, aside lowering the theoretical results, which is a significant divergence. Improved calculation method showed significantly better convergence. Underreporting theoretical results is not more than 23 %, only one case is 33 %
Authors and Affiliations
P. Vegera, R. Tkach, Z. Blikharskyy
Keywords
Related Articles
- EP ID EP230164
- DOI -
- Views 114
- Downloads 0
МІЦНІСТЬ ЗАЛІЗОБЕТОННИХ БАЛОК, ПІДСИЛЕНИХ ПОПЕРЕДНЬО НАПРУЖЕНОЮ АРМАТУРОЮ
This article describes strengthening normal cross-section of reinforced concrete beams with prestressed reinforcement under load. The samples of RC beam with 2100 mm. length, 100 mm width, and 200 mm height was tested. A...
STRENGTHENING OF SUBJECTED TO FIRE MASONRY STRUCTURES WITH GFRP MASHES (TM “MAPEI”)
About eighty thousand fires occurred in Ukraine in 2017. Therefore, a strengthening of building structures which were subjected to the fire is an important issue. The modern retrofitting method based on Glass Fiber Reinf...
ВПЛИВ ЗНАЧЕННЯ КУТІВ ПРИЄДНАННЯ ВХІДНИХ СТРУМЕНІВ НА НЕРІВНОМІРНІСТЬШЛЯХОВОГО ПРИТОКУ ВОДИ ДО НАПІРНОГО ТРУБОПРОВОДУ-ЗБИРАЧА
Results of the experimental investigation of water inflow into a pressure pipe-collector (PC) depending on the value of the inflow angle b of the input jets are presented. The inner diameter of the experimental PC was of...
DEFORMATION IN COMPOSITE STRUCTURES UNDER LOAD-TERM LOADS
Structures carry various types of load during their exploitation. The effects of a longterm load component are significant mainly for the structures in which concrete fulfils its static function. Besides some instant eff...
Визначення необхідної потужності електричних теплоакумуляційних обігрівачів
The article analyzes the methods proposed for selection of storage heaters. Generally, these methods determine the required power inputs for storage heaters depending on the period of cheap pick-off electricity tariff, s...