Research on Post-Fire Bearing Capacity of Ceramsite Concrete Filled Steel Tubular Short Columns

2011 ◽  
Vol 255-260 ◽  
pp. 251-254 ◽  
Author(s):  
Xin Tang Wang ◽  
Ming Zhou ◽  
Jie Yin ◽  
Yao Ji
Keyword(s):  
Mechanical Behavior ◽  
Bearing Capacity ◽  
Experimental Results ◽  
Maximum Response ◽  
Fire Load ◽  
Short Columns ◽  
Maximum Value ◽  
Mix Proportion ◽  
Concrete Mix ◽  
Strength And Ductility

Mechanical behavior and bearing capacity of ceramsite concrete filled steel tubular short column (noted as CCSSC) subjected to fire load are experimentally investigated. Effect of the parameters, such as the maximum value of fire temperatures, fire duration on the strength and ductility of the two types of specimens were especially discussed. The experimental results show that all the specimens of CCSSC have higher post-fire bearing capacity and better ductility, and there was no descent segment in load-displacement curves of the most specimens after the fire load was subjected. It was concluded that the maximum response temperature of specimens and fire duration time has great effect on the axial bearing capacity of concrete-filled steel tubular short columns subjected to fire, and the concrete mix proportion has some effect on both of bearing capacity and ductility of CCSSC subjected to fire load.

Experimental Study of Mechanical Behavior of Concrete Filled Steel Tubular Short Columns after Fire

2010 ◽  
Vol 168-170 ◽  
pp. 674-678 ◽  
Author(s):  
Ming Zhou ◽  
Xin Tang Wang ◽  
Wan Zhen Wang
Keyword(s):  
Mechanical Behavior ◽  
Bearing Capacity ◽  
Test Results ◽  
Fire Load ◽  
Ordinary Concrete ◽  
Short Column ◽  
Short Columns ◽  
Maximum Value ◽  
Bearing Load ◽  
Strength And Ductility

Mechanical behavior and bearing capacity of ordinary concrete filled steel tubular short column (NCSSC) and ceramsite concrete filled steel tubular short column (CCSSC) subjected to fire load are experimentally investigated. Effect of the parameters, such as the maximum value of fire temperatures, fire duration on the strength and ductility of the two types of specimens were especially discussed. The test results show that both of the specimens of NCSSC and CCSSC after fire have higher bearing capacity and better ductility, there was no descent segment in load-displacement curves of the most specimens after the fire load was subjected, and even the case that bearing load increased again after descent segment arose. It was concluded that the maximum response temperature of specimens and fire duration time has great effect on the axial bearing capacity of concrete-filled steel tubular short columns subjected to fire, and there is a turning point of temperature for the influence.

Experimental Study of Mechanical Behavior of Ceramsite Concrete Filled Steel Tubular Columns Subjected to Fire Load

2011 ◽  
Vol 243-249 ◽  
pp. 1228-1232
Author(s):  
Xin Tang Wang ◽  
Zhi Guo Xie ◽  
Ming Zhou ◽  
Jie Yin
Keyword(s):  
Mechanical Behavior ◽  
Bearing Capacity ◽  
Longitudinal Strain ◽  
Test Results ◽  
Fire Load ◽  
Short Column ◽  
Tubular Columns ◽  
Short Columns ◽  
Maximum Value ◽  
Strength And Ductility

Mechanical behavior of a set of ordinary concrete filled steel tubular short column (note as NCSSC) and ceramsite concrete filled steel tubular short column (note as CCSSC) subjected to fire load are experimentally investigated. Effect of the parameters, such as the maximum value of fire temperatures, fire duration on the strength and ductility of the two types of specimens were especially discussed. The test results show that both of the specimens of NCSSC and CCSSC have higher post-fire bearing capacity and better ductility, there was no descent segment in post-fire load-displacement curves of the most specimens subjected to fire load. It was concluded that the maximum response temperature of specimens and fire duration time has great effect on the axial bearing capacity of concrete-filled steel tubular short columns subjected to fire. The maximum longitudinal strain of specimens of CCSSC is less than the corresponding value of the longitudinal strain of NCSSC.

Research of Post-Fire Mechanical Property of Steel Fiber Reinforced Ceramsite Concrete Filled Steel Tubes after Exposure to Fire

2013 ◽  
Vol 790 ◽  
pp. 181-184
Author(s):  
Hai Lun Tong ◽  
Tian Hong Wang ◽  
Jian Qi Lu ◽  
Xin Tang Wang
Keyword(s):  
Bearing Capacity ◽  
Steel Fiber ◽  
Fiber Reinforced ◽  
Fire Load ◽  
Furnace Temperature ◽  
Steel Tubes ◽  
Compression Performance ◽  
Short Columns ◽  
Maximum Value ◽  
Concrete Filled Steel Tubes

The post-fire axial compressive behavior of a set of steel fiber reinforced ceramsite concrete filled steel tubular short columns (noted as SFCC-SSC) was experimentally studied. Effect of the maximum value of fire response temperatures of the specimens and some parameters on the axial compression performance of the specimens was especially discussed. The results show that the surface of the steel tubes after fire presented dark red for 700°Cof furnace temperature and orange red for 900°C, and there was no obvious descending segment in post-fire load-displacement curves of the most specimens subjected to fire load. It was concluded that the axial bearing capacity of the specimens aftersuffering the furnace temperature of 900°C is much less than that of the specimens not subjected to fire load, and the volume of steel fiber of 0.5% of has the greatest effect on post-fire bearing capacity of specimens of SFCC-SSC.

Experimental Study of Post-Fire Performance of Ceramsite Concrete Filled Steel Tabular Columns

2011 ◽  
Vol 71-78 ◽  
pp. 3733-3736 ◽  
Author(s):  
Xin Tang Wang ◽  
Jie Yin ◽  
Ming Zhou ◽  
Jian Min Wang
Keyword(s):  
Experimental Study ◽  
Bearing Capacity ◽  
Geometrical Parameters ◽  
Test Results ◽  
Fire Performance ◽  
Fire Response ◽  
Composite Columns ◽  
Short Columns ◽  
Maximum Value ◽  
Strength And Ductility

The post-fire performance of a set of ceramsite concrete filled steel tabular short columns (noted as CCSSC) after exposure to fire are experimentally studied. Effect of the maximum value of fire response temperatures and geometrical parameters of the composite columns on the strength and ductility of the specimens were especially discussed. The test results show that the specimens of CCSSC have higher post-fire bearing capacity and better ductility, and both of maximum response temperature and geometrical parameters of the specimens presented here have great effect on the post-fire bearing capacity and ductility of ceramsite concrete-filled steel short columns after exposure to fire.

Experimental Study of Behavior of Ceramsite Concrete Filled Steel Tubes after Exposure to Fire

2011 ◽  
Vol 71-78 ◽  
pp. 3721-3724 ◽  
Author(s):  
Ming Zhou ◽  
Xin Tang Wang ◽  
Jian Min Wang ◽  
Zhi Guo Xie
Keyword(s):  
Experimental Study ◽  
Bearing Capacity ◽  
Fire Behavior ◽  
Test Results ◽  
Fire Response ◽  
Fire Load ◽  
Steel Tubes ◽  
Maximum Value ◽  
Concrete Filled Steel Tubes ◽  
Strength And Ductility

The post-fire behavior of a set of ceramsite concrete filled steel tubes (note as CCST) after exposure to fire are experimentally studied. Effect of the maximum value of fire response temperatures of the tubes and their geometric parameters on the strength and ductility of the specimens were especially discussed. The test results show that the specimens of CCST have higher post-fire bearing capacity and better ductility, there was no obvious descent segment in post-fire load-displacement curves of the most specimens subjected to fire load. It was concluded that the maximum response temperature of specimens has great effect on the post-fire bearing capacity of concrete-filled steel tubes subjected to fire load.

Study of Post-Fire Bearing Capacity of Self-Stress Ceramsite Concrete Filled Steel Tubes

2012 ◽  
Vol 204-208 ◽  
pp. 3222-3225
Author(s):  
Jian Min Wang ◽  
Jinyi Zhang ◽  
Xin Tang Wang ◽  
Hong Liang Sun
Keyword(s):  
Mechanical Behavior ◽  
Bearing Capacity ◽  
Experimental Results ◽  
Furnace Temperature ◽  
Steel Tubes ◽  
Short Columns ◽  
Concrete Filled Steel Tubes

Mechanical behavior and bearing capacity of self stress ceramsite concrete filled steel tubes (noted as SCCST) after exposure to fire are experimentally studied. Effect of the parameters, such as value of furnace temperatures, self stress on the post-fire bearing capacity and ductility of the specimens after exposure to fire were especially discussed. The experimental results show that all the specimens of SCCST have higher post-fire bearing capacity and better ductility, and there was no obvious descending segment in the load-strain curves of the most specimens after exposure to fire. It was concluded that the furnace temperature subjected to the specimens and the initial self stress produced in the specimens of the composite short columns has some effect on the axial bearing capacity of ceramsite concrete-filled steel tubular short columns after exposure to fire, and the volume of expansion agent of 10% has most great effect on post-fire bearing capacity of SCCST after exposure to fire.

Study of Fire Behavior of a Profiled Sheet-Ceramsite Concrete Composite Floor

2011 ◽  
Vol 243-249 ◽  
pp. 5231-5235
Author(s):  
Xin Tang Wang ◽  
Ming Zhou ◽  
Hai Jiang Wang ◽  
Zhi Guo Xie
Keyword(s):  
Bearing Capacity ◽  
Fire Behavior ◽  
Experimental Results ◽  
Dead Load ◽  
Fire Response ◽  
Fire Load ◽  
Distributed Load ◽  
Obvious Change ◽  
Bending Capacity

In order to study the fire behavior of the profiled sheet-ceramsite concrete composite floor subjected to fire load, research on fire response and post-fire bearing capacity of a profiled sheet-ceramsite concrete composite floor subjected to dead load, which has no shearing nails, is carried out here through experiment. Based on the experimental results, the fire behavior and post-fire bearing capacity of the floor after exposure to fire are analyzed. It is shown that the failure form of the profiled sheet-ceramsite concrete composite floor after exposure to fire has obvious change compared with the floor not subjected to fire load, but the composite floor subjected to fire still exhibits higher bending capacity, and the ultimate value of the equivalent distributed load is up to 35kN/m2, which may be used as basis of strengthening and repairing of the profiled sheet-ceramsite concrete composite floor after exposure to fire.

Experimental Study on the Axial Loading Tests of RC Columns Strengthened with Steel Tube

2012 ◽  
Vol 204-208 ◽  
pp. 2878-2882 ◽  
Author(s):  
Miao Zhou ◽  
Jian Wei Li ◽  
Jing Min Duan
Keyword(s):  
Experimental Study ◽  
Bearing Capacity ◽  
Axial Loading ◽  
Steel Tube ◽  
Experimental Results ◽  
Engineering Practice ◽  
Rc Columns ◽  
Short Columns ◽  
Loading Tests ◽  
Engineering Staff

This paper carries out a series of experimental study on 6 column specimens, analyses and compares with the different parameters on the axial loading tests of RC columns and RC columns strengthened with steel tube. The experimental results show that the RC columns strengthened with steel tube take full advantage of loading properties of both materials, thus greatly improve the bearing capacity of specimens. With the same wall thickness steel tube, the improving degree of bearing capacity of long columns is bigger than the short columns, and the reinforcement effect is more obvious. The experimental results can offer reference for scientific research and engineering staff, and promote this reinforcement method to be widely used in engineering practice.

Test of Fire Response of a Profiled Sheet-Ceramsite Concrete Composite Floor

2011 ◽  
Vol 255-260 ◽  
pp. 255-258
Author(s):  
Xin Tang Wang ◽  
Hai Jiang Wang ◽  
Ming Zhou ◽  
Yao Ji
Keyword(s):  
Bearing Capacity ◽  
Experimental Research ◽  
Experimental Results ◽  
Great Change ◽  
Fire Response ◽  
Fire Load ◽  
Distributed Load ◽  
Bending Capacity ◽  
Fire Characteristics

For study of the post-fire characteristics of the profiled sheet-ceramsite concrete composite floor (noted as PSCCF) subjected to fire load, the experimental research on post-fire bearing capacity of a PSCCF after fire is carried out. Based on the experimental results, effect of the fire on post-fire bearing capacity of the profiled sheet-ceramsite concrete composite floor is discussed, and the failure phenomenon and mechanism are analyzed. It is shown that the failure form of the profiled sheet-ceramsite concrete composite floor after fire has great change compared with the floor not subjected to fire load, but the composite floor subjected to fire still exhibits higher bending capacity, and the ultimate value of the equivalent distributed load is up to 25kN/m2, which may be used as basis of strengthening and repairing of the profiled sheet-ceramsite concrete composite floor after exposure to fire.

Experimental Study of Performance of Self-Stress Lightweight Aggregate Concrete Filled Steel Tubes after Exposure to Fire

2013 ◽  
Vol 790 ◽  
pp. 173-176
Author(s):  
Jin Can Xu ◽  
Peng Fei Ren ◽  
Hai Lun Tong ◽  
Xin Tang Wang
Keyword(s):  
Bearing Capacity ◽  
Fire Behavior ◽  
Lightweight Aggregate ◽  
Lightweight Aggregate Concrete ◽  
Fire Load ◽  
Steel Tubes ◽  
Aggregate Concrete ◽  
Expansive Agent ◽  
Short Columns ◽  
Concrete Filled Steel Tubes

The post-fire behavior of a set of self-stress lightweight aggregate concrete filled steel tubular short columns (noted as SSLC-SSC) after exposure to fire was experimentally studied. Effect of the maximum value of fire response temperatures of the tubes and their geometric parameters on the strength and the other mechanical property of the specimens were especially discussed. The experimental results show that the specimens of SSLC-SSC have higher post-fire bearing capacity and better plastic deformation, there was no obvious descent segment in post-fire load-displacement curves of the most specimens subjected to fire load. It was concluded that the maximum response temperature of specimens has great effect on the post-fire bearing capacity of self-stress concrete-filled steel tubes subjected to fire load, and the value of self-stress corresponding to 10% of dosage of expansive agent has the greatest effect on post-fire bearing capacity of specimens of SSLC-SSC.

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