Modeling Testing of Reinforced Concrete Block Masonry Structures

2008 ◽  
Vol 400-402 ◽  
pp. 911-916
Author(s):  
Liang Huang ◽  
Sheng Yun Chen ◽  
Chu Xian Shi ◽  
Xiang Gao
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Similarity Theory ◽  
Compressive Force ◽  
Concrete Block ◽  
Model Testing ◽  
Model Structure ◽  
Similar Model ◽  
Reinforced Masonry ◽  
Shear Bearing Capacity

Integrated simple and complete model similarity theory of this structure are set up in this paper. Selection about model reinforced concrete block masonry materials is presented when simple similar model is adopted in testing. Correlations between model and prototype results in basic strength characteristics of masonry prism are reported based on theory analysis. This includes axial compression, joint shear for ungrouted prisms and grouted prisms. The model testing indicated that the structure adopting simple similarity model can accord with the prototype masonry prisms results. The monotonic shear testing of two-story model reinforced masonry shear wall in different compressive forces was performed. The testing results showed that the model structure can accord with the prototype masonry walls results. The shear bearing capacity of model structure is 0.94 times than that of prototype structure without axial compressive force. The shear bearing capacity of model wall is 1.08 times larger than that of prototype wall when the axial stress equal to 1.5 .Model testing and theory foundation adopting simple similar model is erected to carry out reinforced masonry structure.

Research on Shear Bearing Capacity of Reinforced Concrete Short Beam in Salt-Fog Environment

2012 ◽  
Vol 455-456 ◽  
pp. 1079-1083
Author(s):  
Wei Jun Yang ◽  
Hong Jia Huang ◽  
Wen Yu Jiang ◽  
Yi Bin Peng
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Salt Spray ◽  
Test Chamber ◽  
Shear Capacity ◽  
Salt Spray Test ◽  
Concrete Members ◽  
Short Beam ◽  
Shear Bearing Capacity ◽  
Salt Fog

Shantou atmospheric salt-fog environment is simulated with the comprehensive salt spray test chamber. By using reinforced concrete short beams under different water-cement radio, different corrosion time, the inclined section degradation rules of the corrosive reinforced concrete members are researched for establishing shear capacity of short beam formulas in salt-fog environment.

Research on Shear Bearing Capacity of Reinforced Concrete Short Beam in Salt-Fog Environment

2012 ◽  
Vol 455-456 ◽  
pp. 1079-1083
Author(s):  
Wei Jun Yang ◽  
Hong Jia Huang ◽  
Wen Yu Jiang ◽  
Yi Bin Peng
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Short Beam ◽  
Shear Bearing Capacity ◽  
Salt Fog

Influence and Analysis on the Bearing Capacity of Reinforced-Concrete-Frame Node in Beam and Plate's Constraint

2013 ◽  
Vol 351-352 ◽  
pp. 342-346
Author(s):  
Tai Hua Yang ◽  
Xiao Yu ◽  
Jian Wu Gong ◽  
Bin Tang ◽  
Yang Zhi Zhong ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Reinforced Concrete Beam ◽  
Building Codes ◽  
Frame Structure ◽  
Reinforced Concrete Frame ◽  
Short Side ◽  
Concrete Frame ◽  
Shear Bearing Capacity ◽  
Formal Design

According to the domestic and foreign various building codes and a kind of limit fitting formula, to calculate and analyze the compressive bearing capacity of sandwich reinforced concrete beam-column nodes in a high-rising frame structure engineering, and to compare with the results calculated by Midas. They shown those are the facts that cant be neglected, the compressive bearing capacity of the sandwich node core area concrete in beam and plates constraint would improve and the amplitude of improving would be great. But current Chinese building codes haven't included them in the formal design provisions, these ways have to be perfected. In the same time, beam and plate constraint would also have a certain effect to the shear bearing capacity. By contrast, the shear bearing capacity in considering beam and plate constraint would increase 12% to 24%, it would get to 91% of the limit fitting formula calculation value when the short side was sheared, and it is 92% when the long side was sheared. That shown it is quite perfect in considering the effect of the orthogonal beam-plate constraints in domestic seismic code.

scholarly journals Shear Bearing Capacity of Framework Joints of Steel-Reinforced Concrete-Filled Circular Steel Tube

2020 ◽  
Vol 2020 ◽  
pp. 1-15
Author(s):  
Yongjun Lin ◽  
Kaiqi Liu ◽  
Tianxu Xiao ◽  
Chang Zhou
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Plastic Material ◽  
Element Model ◽  
Steel Tube ◽  
Shear Capacity ◽  
Steel Reinforced Concrete ◽  
Shear Mechanism ◽  
Circular Steel Tube ◽  
Shear Bearing Capacity

In this paper, in order to investigate the shear mechanism and shear capacity of framework joints of steel-reinforced concrete-filled circular steel tube (SRCFCST), a numerical finite element model reflecting the mechanical behavior of framework joints of SRCFCST column-reinforced concrete beam is established through simulating concrete by the damage plastic constitutive model and simulating steel by the ideal elastic-plastic material, and its effectiveness is verified by experimental data. On account of uniform distribution of circular steel reinforced around the section and without definite flange and web, the shear mechanism of the framework joints of SRCFCST is analyzed on the basis of equivalent circular steel tube (CST) to the rectangular steel tube. The method for calculating the superposed shear bearing capacities of the joint core area is proposed, which is composed of four parts, i.e., concrete inside tube, concrete outside tube, hooping and steel-reinforced web; and the corresponding formulas for calculating shear bearing capacity are established. The comparative analysis of joints’ shear bearing capacity indicates that the results of numerical simulation and shear bearing capacity formulas coincide well with the experimental values, which can provide reference for the nonlinear analysis and engineering design of similar joints.

The bearing capacity of an expanded clay concrete block of permanent shuttering without reinforced concrete filling

2020 ◽  
Vol 30 ◽  
pp. 422-428
Author(s):  
Arturs Proskurovskis ◽  
Levon Nazinyan ◽  
Anna Tarasova ◽  
Vladimir Bespalov ◽  
Baiba Gaujena
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Concrete Block ◽  
Concrete Filling

Research on the Design Method of a Scale Model of ECC Reinforced Concrete Precast Shear Wall Structure

2016 ◽  
Vol 858 ◽  
pp. 29-33
Author(s):  
Jian Yang ◽  
Shu Ting Liang ◽  
Xiao Jun Zhu ◽  
Dong Yue Wu ◽  
Guang Yun Wang
Keyword(s):  
Reinforced Concrete ◽  
High Performance ◽  
Similarity Theory ◽  
Design Method ◽  
Precast Concrete ◽  
Shear Wall ◽  
Scale Model ◽  
Wall Structure ◽  
Model Structure ◽  
Precast Shear Wall

Engineered cementitious composite (ECC) is a class of high performance cementitious composites with pseudo strain hardening behavior and excellent crack control. Substitution of concrete with ECC can avoid the cracking and durability problems associated with brittleness of concrete. In this paper, it is aimed to design a scale model of ECC reinforced concrete precast shear wall structure. Referencing the prototype structure which is a precast concrete shear wall structure in Nantong, Jiangsu Province, China, the size similarity constant is taken as 1/2. Consulting the scale similarity conditions, the similarity similar constants representing material characteristics, geometrical features, and load characteristics are calculated using the strength similarity theory. Besides, the reinforcements in the model structure are calculated and analyzed. The diameters of reinforcing steel bars in the model structure are determined by the principle of similar size. Equivalent principle of yield bearing capacity are used when there is no corresponding reinforcement selection. The research results of this paper will provide valuable preferences for design and analysis of ECC reinforced concrete precast shear wall structure.

Effect of the Shear Force on the Failure of Spatial Concrete Framework Structures

2013 ◽  
Vol 553 ◽  
pp. 67-80 ◽  
Author(s):  
J. Radnić ◽  
A. Harapin ◽  
R. Markić ◽  
N. Grgić ◽  
M. Sunara ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Numerical Model ◽  
Bearing Capacity ◽  
Cross Sections ◽  
Reinforced Concrete Beam ◽  
Normal Strain ◽  
Structural Elements ◽  
Concrete Frame ◽  
Beam Elements ◽  
Shear Bearing Capacity

Firstly, the previously developed numerical model for static analysis of spatial concrete frame structures is briefly described. In this model, cross-sections of structural elements can be of arbitrary shape and formed by various materials, with arbitrary normal stress normal strain relations. This model only includes the effect of normal stresses on the structure failure. Here, it was improved by including the effect of shear forces on the failure of reinforced concrete beam elements. Shear bearing capacity of reinforced concrete section includes the concrete capacity, as well as the shear bearing capacity of longitudinal, transversal and inclined reinforcement bars. The developed numerical model and appropriate software were verified on experimental shear test of a concrete beams. Good agreement was obtained between the experimental and the numerical results. However, further verifications of the presented numerical model are needed.

Study on Shear Bearing Capacity of Composite Reinforced Concrete Block Masnory

2011 ◽  
Vol 94-96 ◽  
pp. 1141-1145
Author(s):  
Ying Jie Zhu ◽  
Lan Li ◽  
Wen Hui Yang
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Failure Process ◽  
Concrete Block ◽  
Masonry Wall ◽  
Hysteresis Curve ◽  
Width Ratio ◽  
Open Hole ◽  
Core Column ◽  
Constructional Column

constructional column- core column ; Combination of reinforcement concrete block wall; Hysteresis curve; Ductility; Height-width ratio Abstract: The two groups of constructional column- core column composite of reinforced concrete block masonry wall under low cyclic test is made, considering the different height-width ratio, open hole and don't open hole, the setting of the horizontal reinforcing steel bar and reinforced such as the effect not set level parameters on the wall the failure process and failure pattern, hysteresis characteristics, bearing capacity, ductility, skeleton curves, the viscous damping coefficient, stiffness and steel strain change the properties including the influence law. Test results show that this wall system has better seismic performance.

Shear Bearing Capacity Forecast of Reinforced Concrete Frame Abnormal Node Based on the BP Neural Network Theory

2011 ◽  
Vol 368-373 ◽  
pp. 66-71
Author(s):  
Hong Li ◽  
Sheng Ling Hao ◽  
Dong Fang Zhang
Keyword(s):  
Neural Network ◽  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Bp Neural Network ◽  
Network Theory ◽  
Reinforced Concrete Frame ◽  
Concrete Frame ◽  
Shear Bearing Capacity ◽  
Neural Network Theory ◽  
Abnormal Node

In order to forecast shear bearing capacity of reinforced concrete frame abnormal node on the basis of analyzing feedforward neural network theory, the complex nonlinear relationship, which is between shear bearing capacity of reinforced concrete frame abnormal node under the low cyclic loading and each major influence factor, is simulated by BP neural network, and the neural network prediction model is built. The comparison with the result of experiment has brought satisfying result. The method of shear bearing capacity forecast of reinforced concrete frame abnormal node based on the BP neural network theory is proved feasible and applicable.

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