Reactive powder concrete-filled steel tube (RPCFT) members subjected to axial tension: Experimental study and design

Structures ◽  
2020 ◽  
Vol 28 ◽  
pp. 933-942
Author(s):  
Zhichao Lai ◽  
Pengyu Yao ◽  
Wenjin Huang ◽  
Baochun Chen ◽  
Zheng Ying
Keyword(s):  
Experimental Study ◽  
Steel Tube ◽  
Reactive Powder Concrete ◽  
Concrete Filled Steel Tube ◽  
Axial Tension ◽  
Reactive Powder

scholarly journals Study of Circular Reactive Powder Concrete-filled Steel Tube Stub Columns under Axial Compression

2018 ◽  
Vol 11 (5) ◽  
pp. 144-152
Author(s):  
Hua Luo ◽  
◽  
Weiwei Wang ◽  
Guanghui Wang ◽  
Bo Pang ◽  
...  
Keyword(s):  
Axial Compression ◽  
Steel Tube ◽  
Reactive Powder Concrete ◽  
Concrete Filled Steel Tube ◽  
Reactive Powder ◽  
Stub Columns

Predictions of residual carrying-capacities for fire and near-field blast-damaged reactive powder concrete-filled steel tube columns

2018 ◽  
Vol 9 (4) ◽  
pp. 525-553 ◽  
Author(s):  
Wanxiang Chen ◽  
Zixin Zhou ◽  
Huihui Zou ◽  
Zhikun Guo
Keyword(s):  
Carrying Capacity ◽  
Large Scale ◽  
Blast Resistance ◽  
Near Field ◽  
Theoretical Method ◽  
Steel Tube ◽  
Reactive Powder Concrete ◽  
Concrete Filled Steel Tube ◽  
Damage Indices ◽  
Reactive Powder

An approximate approach is developed to estimate the residual carrying-capacities of fire and near-field blast-damaged reactive powder concrete-filled steel tube columns. The single-degree-of-freedom model is employed to calculate the initial deflections of fire-damaged reactive powder concrete-filled steel tube columns subjected to axial and blast-induced transverse loads, and then a modified formula including double coefficient is further proposed to predict the ultimate resistance. Then, a series of blast-resistance and load carrying-capacity tests on six large-scale reactive powder concrete-filled steel tube columns are conducted to validate the suitability of theoretical method presented in this article. Blast tests demonstrate that the blast-resistances of reactive powder concrete-filled steel tube columns are more sensitive to fire durations than to scale distances. In addition, it is indicated that ISO-834 standard fire exposures cause significant degradations of material properties and have remarkable effects on the residual carrying-capacities of reactive powder concrete-filled steel tube columns. No local bucking and burst could be observed in the residual carrying-capacity tests; also, there are no visible hinge-like deformations in the mid-span area, and the excellent fire-resistances and blast-resistances of reactive powder concrete-filled steel tube columns are experimentally verified. Analytical results show that the predicted axial load capacities of six reactive powder concrete-filled steel tube columns are in good agreement with experimental data. All damage indices of the test specimens are within 0.8, meaning only minor to severe damage is done to the reactive powder concrete-filled steel tube column during fire and blast attacks, which is consistent with the test results.

Experimental study on flexural behaviour of reinforced reactive powder concrete pole

2021 ◽  
Vol 312 ◽  
pp. 125399
Author(s):  
Yanzhong Ju ◽  
Jian Zhao ◽  
Dehong Wang ◽  
Yifeng Song
Keyword(s):  
Experimental Study ◽  
Reactive Powder Concrete ◽  
Flexural Behaviour ◽  
Reactive Powder
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