Reinforced Concrete Panels Subjected to Uniaxial and Biaxial Tension

Abstract

This paper discusses the pre-and post cracking behavior and tensile response of concrete panels subjected to axial tension. The main objective of this investigation is to study the stress-strain relationship of thick reinforced concrete plates, taking into consideration the effect of the steel reinforcement in both directions, as the thick concrete panels are well used in offshore concrete structures and nuclear power plant construction. A theoretical model for predicting the cracking behavior, which includes the crack spacing and width of reinforced concrete panels under axial loading at any given loading stage, is developed. In this theoretical model, the main parameters that influence the cracking behavior of concrete in both directions are considered. The behavior of two-way reinforced concrete plate is analyzed with consideration of the effect of concrete tensile strength, reinforcement ratio, bar diameter and spacing in both longitudinal and transverse directions.

Centriškai tempiamųjų armuoto betono elementų įtempių ir deformacijų būvio analizė

“…Dawood & Marzouk (2012) 307 190 600 38-50 600 15-20 6 37,1-83,5 0,9-1,7 -242-245 Fields & Bischoff (2004) 218 250 250 40 2000 16-20 4 41,2-81,0 1,3-1,9 232-337 246-258 Williams (1986) 206 250 1500 30-113 1500-2500 10-25 8-32 21,9-39,0 0,4-2,4 -259 Elfgren & Noghabai (2002) 190 160 160 64 1920 32 1 45,6 3,2 -260-268 Hwang (1983) 155 178 305 19-38 762 11 8 34,5 1,5 -269 Dawood & Marzouk (2010) 113 190 600 50 600 20 6 65,0 1,7 -270-275 Tamai et al (1987) 106 150-200 200-250 65-90 2700 20 1 23,2-41,8 0,6-1,0 -276-277 Lorrain et al (1998) 95 100 100 44 2000 12 1 42,0-101,0 1,1 -278-281 Rostásy et al (1976) 86 300 500 26-27 6000 6-8 10-30 12,8-16,4 0,3-1,0 -282-288 Houde & Mirza (1972) 75 75-182 75-203 31-78 406-1829 13-25 1 17,9-46,9 0,6-2,9 -289 Yuguang et al (2009) 63 50 50 20 700 10 1 98,8 3,2 -290 Heidolf (2007) 59 100 38 1000 12 1 38,0 1,5 -291 Fischer & Li (2002) 57 175 175 75 500 25 1 50,0 1,6 -292-293 Hartl (1977) 48 80 80 34 750 12 1 43,0 1,8 -294 Scott & Gill (1987) 45 103 101 46 1500 12 1 36,0 0,8 -295-297 Mirza & Houde (1979) 45 102-203 102-203 38-89 406 25 1 29,8 1,2-5,2 -298-299 Empelmann (1995) 42 120-150 120-150 20-25 1500 8-14 4 30,5-34,8 1,4-2,8 -300 Bischoff (1983) 12 250 250 40 2000 20 4 39,8 1,9 -301 Gerstle et al (1982) 11 152 55 1829 25 1 17,9 2,9 -302 Bhide & Collins (1987) 8 Surinkti bandiniai turėjo įvairius geometrinius ir medžiagų parametrus, atsparumą pleišėjimui bei laikomąją galią. Betono savybių (stiprio ir deformacijų modulio) įvairovės poveikis eksperimentinių rezultatų sklaidai galėtų būti sumažintas normalizuojant tempiamojo sustandėjimo diagramas.…”

Crack width model for thick reinforced concrete plates subjected to in-plane forces

“…A good estimate of the maximum crack spacing was obtained by Dawood and Marzouk (2010a, 2010b, 2010c, where the influence of the main parameters affecting the cracking behavior of reinforced concrete structures, such as the concrete cover, longitudinal bar diameter f 1 , and spacing S b are taken into consideration. Figure 11a shows the effective concrete area surrounding the reinforcement in case of (h t ≤ 4C).…”

“…A crack spacing model was developed for thick axially loaded plates (Dawood and Marzouk 2010a, 2010b, 2010c, which considered the equilibrium and compatibility equations of reinforced concrete elements. The analytical model for maximum crack spacing was expressed as follows:…”

“…Based on the model of maximum crack spacing developed by Dawood and Marzouk (2010a, 2010b, 2010c in eq. [2], the effect of various factors that affect the crack width such as the presence of transverse reinforcement, bar spacing, and concrete cover was investigated.…”