push-out การใช้

• Determination of the bond behaviour between reinforcing bars and autoclaved aerated concrete by the ' push - out ' test
• " determination of the bond behaviour between reinforcing bars and autoclaved aerated concrete by the " push - out " test . "
• According to the experimental results of the 20 push - out specimens , together with the mathematical analysis of the p - sl curves , three characteristic b
• On the other hand , due to the difference of the loading form on eccentric loading column with push - out test and short - column test , the bond - slip performance ca n ' t be displayed in it
• In order to determine the relations between the four main bond - anchoring factors - concrete strength , concrete cover thickness , steel shape embedment length and the ratio of the transverse hoops - and the bond strength , and establish the bond - slip constitutive relations , 16 standard push - out test specimens were designed , and 4 comparison specimens were additionally designed to find the difference of the bond performance between the web , inside and outside of flanges the steel shape
• The numerical simulation of the push - out test specimens were conducted with the ansys program , the simulation results were in good agreement with the experimental results , based on which a series of src beam specimens experimented before were also numerically simulated with the ansys program and compared with the experimental results , from these a set of methods to simulate the src structures with the ansys program , which including the establishment of the fem model , solution of the fem model , solution results analysis and so on was finally established
• For find the mechanism of bond - slip , the whole push - out experiment process had been fully observed . the first cracking time , the cracking development progress , and the final cracking patterns were carefully observed and depicted ; and the failure specimens after experiment were entirely broke open , from which the interior failure form and characters were also observed
• Currently , the main methods used to measure the fiber / matrix interface properties of composite were based on micro - mechanics , including single - fiber composites fragmentation test ( sfc ) , micro - debonding technique , single - fiber pull - out test , and single - fiber push - out test , in which sfc was most widely used
• This paper analyzed the mechanism of bond between the steel shape and concrete in the src ( steel reinforced concrete ) structures . by a series of src push - out tests , both the bond strength and the relations between the bond stresses and slip , which was usually called bond - slip constitutive relations , were analyzed and studied to solve the problem on bond - anchoring design and the problem on numerical simulation of the bond - slip in fem ( finite element method ) analysis of src structures
• The experimental study of twelve push - out specimens with different hole molds and different materials filled in holes and two composite steel - fdpcp ( full - depth precast concrete panels ) beams of a full shear connection and different hole mold , as well as a composite steel - fdpcp beams of a partial shear connection and square holes was conducted in this paper , the authors gain following results : three composite steel - fdpcp beams all have good composite action and perfect work behaviors as a whole and the composite steel - fdpcp beams is a new - style structure which should get further research and development