scholarly journals Experimental study on laminated bamboo lumber column

2018 ◽  
Vol 38 ◽  
pp. 02001 ◽  
Author(s):  
Chenwei Wang ◽  
Huizhong Zhang ◽  
Chenjie Zhao ◽  
Chenge Zhang ◽  
Tongwei Cao ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Experimental Study ◽  
Tensile Stress ◽  
Bearing Capacity ◽  
Influencing Factors ◽  
Ultimate Load ◽  
Eccentric Compression ◽  
Laminated Bamboo ◽  
Standard Normal ◽  
Laminated Bamboo Lumber

This paper presents and discusses the experimental study on the mechanical properties of LBL column both under axial and eccentric compression. The results shows that the ultimate load for the eccentric compression specimens with the eccentricity values of 30 mm and 110 mm are 95.2 kN and 31.8 kN respectively. Eccentricity is one of the main influencing factors for the ultimate bearing capacity of the LBL columns. Because of the vulnerability of the mechanical connections or natural nodes to tensile stress and secondly, laminated bamboo is vulnerable to defects that has more detrimental influence on the tensile resistance of the material. The variation in strain for the laminated bamboo lumber column sections is linear throughout the loading process, following standard normal section bending theory which is similar as that for the beam.

Mechanical properties of laminated bamboo lumber column under radial eccentric compression

2016 ◽  
Vol 121 ◽  
pp. 644-652 ◽  
Author(s):  
Hai-tao Li ◽  
Guo Chen ◽  
Qisheng Zhang ◽  
Mahmud Ashraf ◽  
Bin Xu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Eccentric Compression ◽  
Laminated Bamboo ◽  
Laminated Bamboo Lumber

Evaluation on the ultimate bearing capacity for laminated bamboo lumber columns under eccentric compression

Structures ◽  
2020 ◽  
Vol 28 ◽  
pp. 1572-1579 ◽  
Author(s):  
Haitao Li ◽  
Jingwen Su ◽  
Zhenhua Xiong ◽  
Mahmud Ashraf ◽  
Ileana Corbi ◽  
...  
Keyword(s):  
Bearing Capacity ◽  
Ultimate Bearing Capacity ◽  
Eccentric Compression ◽  
Laminated Bamboo ◽  
Laminated Bamboo Lumber

Effect of nodes on mechanical properties and microstructure of laminated bamboo lumber units

2021 ◽  
Vol 304 ◽  
pp. 124427
Author(s):  
Han Zhang ◽  
Haitao Li ◽  
Yanjun Li ◽  
Zhenhua Xiong ◽  
Nini Zhang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Laminated Bamboo ◽  
Laminated Bamboo Lumber

Experimental Study on Mechanical Properties of Larch Glulam Columns under Axial Compression

2016 ◽  
Vol 847 ◽  
pp. 38-45
Author(s):  
Xian Yan Zhou ◽  
Dan Zeng ◽  
Zhi Feng Wang
Keyword(s):  
Mechanical Properties ◽  
Experimental Study ◽  
Bearing Capacity ◽  
Axial Strain ◽  
Slenderness Ratio ◽  
Axial Loading ◽  
Ultimate Bearing Capacity ◽  
Reduction Factor ◽  
Peak Strain ◽  
Short Columns

At present, the relevant researches of Glulam columns in China are mainly restricted to short columns. In order to study the mechanical properties of long columns under axial loading, an experimental study on five different slenderness ratios of Larch Glulam columns was carried out. With slenderness ratio changing, the variations of experimental data such as axial strain, lateral deflection at mid-height, ultimate bearing capacity, and peak strain were comparatively analyzed. The failure pattern and failure mechanism of long columns were discussed. The results indicate that the ultimate bearing capacity of Larch Glulam columns gradually decreases as the slenderness radio increases and the failure mode is gradually converted from strength failure to instability failure. The ultimate load reduction factor is obtained by regression analysis based on the experiment results of Larch Glulam short columns. The basis for design and application of Larch Glulam columns are provided.

Experimental Study on Seismic Behavior of Small-Sized Fly Ash Hollow Block Wall

2012 ◽  
Vol 446-449 ◽  
pp. 418-423
Author(s):  
Ming Xu ◽  
Zhu Peng ◽  
Meng Jing Chen ◽  
Zhong Fan Chen
Keyword(s):  
Mechanical Properties ◽  
Experimental Study ◽  
Fly Ash ◽  
Seismic Behavior ◽  
Ultimate Load ◽  
Failure Characteristics ◽  
Process Failure ◽  
Work Mechanism ◽  
Hollow Block ◽  
Block Wall

Based on the experiment of five full-scale small-sized fly ash hollow block walls under low-cycle reversed load, the influence of aspect ratio, common horizontal reinforcement, size of structural column section to the loading process, failure characteristics, cracking load, ultimate load, deformation, ductility, stiffness and energy dissipation of the walls was studied. Simultaneously the mechanical properties and work mechanism of the small-sized fly ash hollow block wall has been analyzed.

scholarly journals Effects of Different Interface Forms on Mechanical Properties of Steel Self-Compacting Concrete Composite Beams

2020 ◽  
Vol 2020 ◽  
pp. 1-17
Author(s):  
Chengzhi Wang ◽  
Xin Liu ◽  
Wei Liu ◽  
Zhiming Li
Keyword(s):  
Mechanical Properties ◽  
Experimental Study ◽  
Bearing Capacity ◽  
Composite Structure ◽  
Mechanical Performance ◽  
Complex Structure ◽  
Self Compacting Concrete ◽  
Element Analysis ◽  
Shear Connectors ◽  
Fea Model

In the water resources allocation project in Pearl River Delta, in order to optimize the structural design, the deep buried tunnel adopts the composite lining structure. However, the weakest link in a complex structure is the connection between two different interfaces. This paper reports the findings of an experimental study that was undertaken to investigate the interface mechanical performance of steel self-compacting concrete composite structure subjected to cyclic loads. In this study, different shear connectors are considered, and six different specimens were designed and tested, respectively. The test is used to research the effect of the different shear connectors on the bearing capacity and interface mechanical properties of composite structure in an experimental study. According to these test results, a detailed analysis was carried out on the relationships, such as the stress-strain and load-displacement relationships for the specimen. These tests show that the shear connectors will significantly enhance the bearing capacity and interface mechanical properties of the composite structure. Among them, the comprehensive performance of the specimens using the stud-longitudinal ribs shear connectors is the best. Additionally, a finite element analysis (FEA) model was developed. The comparison of the simulation results with the experimental results shows that this FEA is applicable for this type of experiment.

scholarly journals Slenderness Ratio Effect on the Eccentric Compression Performance of Chamfered Laminated Bamboo Lumber Columns

2021 ◽  
Vol 9 (12) ◽  
pp. 165-182
Author(s):  
Ke Zhou ◽  
Haitao Li ◽  
Assima Dauletbek ◽  
Dong Yang ◽  
Zhenhua Xiong ◽  
...  
Keyword(s):  
Slenderness Ratio ◽  
Ratio Effect ◽  
Compression Performance ◽  
Eccentric Compression ◽  
Laminated Bamboo ◽  
Laminated Bamboo Lumber

scholarly journals The Impact and Modelling of Concentrated Butt-Joints on Vertically Laminated Bamboo-Timber Hybrid Bio-Flitch Beams

2021 ◽  
Author(s):  
Hexin Zhang ◽  
Niaz Gharavi ◽  
Simon H.F. Wong ◽  
Yu Deng ◽  
Ali Bahadori-Jahromi ◽  
...  
Keyword(s):  
Experimental Study ◽  
Close Agreement ◽  
Experimental Results ◽  
Flexural Properties ◽  
Butt Joints ◽  
Laminated Bamboo ◽  
Structural Applications ◽  
Hybrid Beams ◽  
The Impact ◽  
Laminated Bamboo Lumber

Abstract This paper presents the experimental and analytical studies to investigate the impact of concentrated laminated bamboo butt-joints on the flexural properties of vertically laminated bamboo-timber hybrid beams (VLHBs, or flitch beam). The experimental results reveal that the concentrated butt-joints significantly reduce the flexural strength of the VLHB. They also suggest that the failure mechanism of the VLHBs with or without concentrated butt-joints are completely different. In addition, laminated bamboo lumber with concentrated butt-joints was found to be unsuitable for structural applications. The analytical estimations show close agreement with the experimental results. However, due to the layout of the sample VLHB, the experimental study cannot confirm the impact of the butt-joints on the modulus of elasticity in bending.

scholarly journals Mechanical evaluation for laminated bamboo lumber along two eccentric compression directions

2016 ◽  
Vol 62 (6) ◽  
pp. 503-517 ◽  
Author(s):  
Hai-tao Li ◽  
Gang Wu ◽  
Qi-sheng Zhang ◽  
Jing-Wen Su
Keyword(s):  
Eccentric Compression ◽  
Laminated Bamboo ◽  
Laminated Bamboo Lumber

Experimental Study on Residual Load Bearing Capacity of SRC Eccentric Columns after Exposure to Fire

2010 ◽  
Vol 163-167 ◽  
pp. 2240-2246 ◽  
Author(s):  
Jun Hua Li ◽  
Yue Feng Tang ◽  
Ming Zhe Liu
Keyword(s):  
Mechanical Properties ◽  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Ultimate Strength ◽  
Room Temperature ◽  
Ultimate Load ◽  
Flexural Rigidity ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Steel Reinforced Concrete

This paper provided three test data pertaining to the mechanical properties of steel reinforced concrete (SRC) eccentric columns after exposure to fire and one comparative test data pertaining to the mechanical properties of steel reinforced concrete columns at room temperature. The influence of eccentricity on failure mode, distortion performance and ultimate load bearing capacity are mainly studied. Test results show that the failure modes of steel reinforced concrete eccentric columns after exposure to fire are similar to that at room temperature. Strain along the section height at mid-span section of eccentric columns before loaded to 90% ultimate load bearing capacity is linearly distributed and well agree with the plane section supposition. After exposure to fire, the flexural rigidity and load bearing capacity of specimens are all declined compared with that at normal temperature. In various loading stages from the initial loading to 80% ultimate strength, the ratio of flexural rigidity of SRC eccentric columns after exposure to fire and at normal temperature is ranged from 0.30 to 0.59. With the same concrete strength and heating condition, the ultimate strength of specimens decreases with the increasing of eccentricity. The ultimate bearing capacity of all specimens at normal room temperature is calculated on the method proposed by Chinese regulation JGJ 138-2001. The compared results of experimental values and calculating values show that the residual load bearing capacity of SRC eccentric columns after exposure to fire is about 69% to 81% of that at room temperature.

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