Stress-strain Constitutive Relation and Finite Element Analysis of Recycled Pebble Concrete After High Temperature Water Cooling
CHEN Zongping1,2,*, XU Ruitian1, LIANG Houran1
1 College of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China 2 Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education, Guangxi University, Nanning 530004, China
Abstract: In order to study the mechanical properties of recycled concrete (pebbles) after high-temperature water cooling, 60 standard cylinder test blocks were designed and manufactured with temperature and replacement rate as variable parameters, and uniaxial compression tests were carried out on them. The failure mode of the test block was observed, the load displacement curve of the whole process was obtained, and the constitutive equation of recycled concrete after high temperature water cooling was put forward, which was suitable for the finite element analysis of ABAQUS. The results show that: the recycled pebble concrete appears the phenomenon of looseness and bursting after high-temperature water cooling, and the burning loss rate increases positively at low temperature. The recycled concrete has lower peak stress and strain, but has better ductility than ordinary concrete. The proposed calculation method of RAC residual bearing capacity after high temperature spray cooling has certain applicability. Based on the experiment of 22 recycled concrete beams after high temperature water cooling, the constitutive equation considering temperature and substitution rate is applicable in ABAQUS.
陈宗平, 许瑞天, 梁厚燃. 高温喷水冷却后再生卵石混凝土应力-应变本构关系及有限元分析[J]. 材料导报, 2021, 35(13): 13032-13040.
CHEN Zongping, XU Ruitian, LIANG Houran. Stress-strain Constitutive Relation and Finite Element Analysis of Recycled Pebble Concrete After High Temperature Water Cooling. Materials Reports, 2021, 35(13): 13032-13040.
Yu Z, Shan Y, Huang Q, et al. Journal of Materials in Civil Enginee-ring,2019,31(10),04019216.1.
2
Chen Z P, Ying W D, Chen Y L, et al. Journal of Building Materials,2015,18(6),935(in Chinese).
陈宗平,应武挡,陈宇良,等.建筑材料学报,2015,18(6),935.
3
Sarhat S R, Sherwood E G. Journal of Materials in Civil Engineering,2013,25(11),1721.
4
Vieira J P B, Correia J R,de Brito J. Cement and Concrete Research,2011,41(5),533.
5
Xiao J Z, Zhang C Z. Key Engineering Materials,2007,348-349,937.
6
Wasim khalig, Taimur. Fire Safety Journal,2018,96,203.
7
Guillermo E, Sonia M V, Marianela R. Construction and Building Mate-rials,2016,111,43.
8
Liu Y, Wang W, Chen Y F, et al. Construction and Building Materials,2016,129,37.
9
Meng E, Yu Y, Yuan J, et al. Construction and Building Materials,2017,155,542.
10
Yang H, Qin Y, Liao Y, et al. Construction and Building Materials,2016,106,374.
11
Ke X J, Yang C H, Su Y S, et al. Journal of Building Materials,2017,20(5),794(in Chinese).
柯晓军,杨春辉,苏益声,等.建筑材料学报.2017,20(5),794.
12
Chen Z P, Liang H R. Journal of Civil Engineering,2019,52(12),22(in Chinese).
陈宗平,梁厚燃.土木工程学报,2019,52(12),22.
13
Ministry of Housing and Urban-rural Development of the People’s Republic of China. Pebbles and gravel for construction (GB/T14685-2011), China Planning Press, China,2011(in Chinese).
Ministry of Housing and Urban-rural Development of the People’s Republic of China. Code for fire protection design of tall buildings (GB50045-95), China Planning Press, China,2005(in Chinese).
Li Wei, Guo Z H. Journal of Building Structures,1993,14(1),8(in Chinese).
李卫,过镇海.建筑结构学报,1993,14(1),8.
17
European Committee for Standardization. Eurocode 1: Actions on structures-part 1-2: general actions-actions on structures exposed to fire (en 1991-1-2:2002), European Convention for Constructional Steelwork, Belgium,2002.
18
Zhong Shantong. The concrete-filled steel tubular structures, Heilongjiang Science and Technology Press, China,1994(in Chinese).
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2021, Vol. 35 
