Characteristics of Compressive Stress Distribution in High-Strength Concrete

2008 ◽  
Vol 105 (5) ◽  
Keyword(s):  
Stress Distribution ◽  
Compressive Stress ◽  
High Strength Concrete ◽  
High Strength ◽  
Strength Concrete

scholarly journals Mode II Behavior of High-Strength Concrete under Monotonic, Cyclic and Fatigue Loading

Materials ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 7675
Author(s):  
Henrik Becks ◽  
Martin Classen
Keyword(s):  
Fatigue Life ◽  
Compressive Stress ◽  
Fatigue Damage ◽  
High Strength Concrete ◽  
High Strength ◽  
Fatigue Loading ◽  
Mode Ii ◽  
Shear Tests ◽  
Strength Concrete ◽  
Mode Ii Loading

An economically efficient yet safe design of concrete structures under high-cycle fatigue loading is a rather complex task. One of the main reasons is the insufficient understanding of the fatigue damage phenomenology of concrete. A promising hypothesis states that the evolution of fatigue damage in concrete at subcritical load levels is governed by a cumulative measure of shear sliding. To evaluate this hypothesis, an experimental program was developed which systematically investigates the fatigue behavior of high-strength concrete under mode II loading using newly adapted punch through shear tests (PTST). This paper presents the results of monotonic, cyclic, and fatigue shear tests and discusses the effect of shear-compression-interaction and load level with regard to displacement and damage evolution, fracture behavior, and fatigue life. Both, monotonic shear strength and fatigue life under mode II loading strongly depend on the concurrent confinement (compressive) stress in the ligament. However, it appears that the fatigue life is more sensitive to a variation of shear stress range than to a variation of compressive stress in the ligament.

Bending Bearing Capacity of Steel Tubular Columns Filled with Steel-Reinforced High-Strength Concrete

2015 ◽  
Vol 1089 ◽  
pp. 219-222
Author(s):  
Ping Guan ◽  
Lan Xiang Chen
Keyword(s):  
Stress Distribution ◽  
Bearing Capacity ◽  
High Strength Concrete ◽  
High Strength ◽  
Distribution Method ◽  
Strength Concrete ◽  
Tubular Columns ◽  
Bending Resistance ◽  
Section Form ◽  
Plastic Stress

Steel tubular column filled with steel-reinforced high-strength concrete (STSRHC) has higher bearing capacity and seismic performance, so STSRHC has a good application prospect in Engineering. So far, it is in the stage of research. To calculate the bending bearing capacity of steel tubular column filled with steel-reinforced high-strength concrete (STSRC), the bending resistance of STSRHC is predicted by the method of plastic stress distribution, and the formula of bending bearing capacity is successfully established. The results show that the calculated results based on the plastic stress distribution method and the experimental ones are in agreement well, and the formula can be used into columns that have different section form of inserted steel. The conclusions have a guiding significance on improving other performances of STSRHC.

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