A presentation given at the Global Bamboo and Rattan Congress (BARC 2018), 25-27 June 2018.

1. 结构用重组竹受力性能试验研究
Experimental study on mechanical property of
reconsoliated bamboo used for structure
汇报人：刘玉琪 导师：陈伯望
Report person: LIU YUQI tutor：CHEN BOWANG

2. 目录
Catalog

3. 重组竹是一种新型材料，强度高，变形能力好，材质均匀，加工性
能好，其主要工艺流程有：
The recombinant bamboo is a kind of new materials of high strength, good defor
mation ability, uniform texture, good processing performance，
the main technological processes are：
毛竹/Moso
bamboo
碾压/rolling
compaction
高温水煮
/High
temperature
boiled
干燥/d
施胶/glu
组胚
/composition
热压成型
/thermo-
compression
formation
本文中的碳化重组竹多一道高温蒸工艺，提高了重组竹的防腐性能。
in this paper, the carbide recombinant bamboo has extra high temperature steaming
process, it improves the anti-corrosion performance of the recombinant bamboo

4. 毛竹/Moso bamboo
非碳化重组竹梁/Non-carbonized bamboo scrimber
beam

5. 试件
/Specimens
顺纹方向压缩试件/
Compressive in
parallel-to-grain
direction
顺纹方向抗弯试件
/Bending in parallel-
to-grain direction
尺寸/size
（mm）
50×50×200 25×25×300
顺纹方向抗拉试件
Tension in parallel-to-grain direction
其他试件尺寸
Other sample sizes

7. 非碳化试件/Non-
carbonized specimen
碳化试件/ Carbonized
specimen

8. 非碳化试件/ Non-carbonized
specimen
碳化试件/ Carbonized
specimen

9. 力学试验结果统计表/Results of mechanical experiments
材料类型
/Material type
试验类型/Type of test 弹性模量
/ Elasticitymodulus/MPA
比例极限强度/Limit of
proportionality
strength/MPA
强度
/Strength/
MPA
碳化重组竹
/Carbonized
reconsoliated
bamboos
顺纹抗拉/Tension in parallel-to-grain direction 6421 83.3
顺纹抗压/Compressive in parallel-to-grain direction 9639 29.6 58.6
顺纹抗弯/Bending in parallel-to-grain direction 81.9
非碳化重组竹
/Non-
arbonized
reconsoliated
bamboos
顺纹抗拉/Tension in parallel-to-grain direction 10296 118.4
顺纹抗压/Compressive in parallel-to-grain direction 11890 33.1 65.5
顺纹抗弯/Bending in parallel-to-grain direction 117.2

10. 试件尺寸/Specimen size
1860*90*150（碳化/Carbonized ）
1870*70*140（非碳化/Non-arbonized ）
加载方式/
Loading method：
试验加载采用分级加载的方式，预加荷 载为
10KN，每级加载10KN，加载至40KN时，每级加
载5KN，分别记录下相应的荷载、挠度与应变，
直至梁破坏。The test using gradation loading
way,preloading is 10KN ,loading 10KN at each
stage ,when loading to 40KN, loading 5KN at each
stage,record the corresponding load,deflection and
strain until beam damaged.
四点弯曲加载示意图/Test
loading apparatus

11. S1试件
S2试件 S3试件
碳化试件破坏形态/Failure mode
of carbonized specimen

12. 非碳化试件破坏形态/Failure mode of Non-carbonized specimen

13. 碳化试件/Curves of load-
displacement of Carbonized specimens
非碳化试件/ Curves of load-displacement
of Non-carbonized specimens

14. 梁编号/Beam
number
材料/materials 弹性比例极限/elastic
proportional limit
承载力极限/ultimate bearing capacity
挠度
/deflection/m
m
荷载/load/KN 挠度
/deflection/m
m
荷载/load/KN 弯曲应力
/bending
stress/MPA
S1 碳化重组竹
/Carbonized
reconsoliated
bamboos
15.155 72 15.155 72 55.33
S2 15.035 74 15.035 74 54.81
S3 15.165 71 15.165 71 52.59
B1 非碳化重组竹
/Non-
arbonized
reconsoliated
bamboos
14.423 40 35.878 66.1 72.27
B2 16.368 38.9 36.875 64.4 70.41
B3 13.9 39.3 31.079 65.8 71.94
试件试验结果/Test results of specimen

15. S3 B3

16. 试件尺寸/Specimen
size
1860*90*150（碳化
/Carbonized）
1870*70*140（非碳化
/Non-Carbonized）
加载示意图/ Schematic diagram of loading

17. 最终确定长期加载试验的加载
值为梁短期加载试验所得的极
限承载力标准值的30％。
Eventually determining the valu
e of the long-
term load test is 30% of the ulti
mate bearing capacity of the sho
rt -term load test.

19. 时间-挠度曲线/Curves of time-displacement of specimen

20. 长期压缩试验 70*70mm截面 3试件串联
/Long-term compression ,70*70, 3
specimen in series
应力比/Stress
ratio
加 载 应 力 / T h e
loading stress
0.2 12.2MPA
0.4 24.5MPA
0.6 36.7MPA
加载示意图/Schematic diagram of loading 加载方案/Loading scheme

21. 总共三组分别施加不同的应力值，每
组3个串联。采用几何对中（球铰，
试件，千斤顶，压力传感器在一轴线
上）和物理对中（预加压至20%，试
件两边百分表误差小于其平均值的
10%）相结合的方式保证轴心受压。
观察周期210天。
Each of three groups is set different st
ress value.Using geometry method (ba
ll joint, specimen, jack, pressure senso
r in the axis) and the physical method
o(pre -
pressure to 20%, on both sides of the
specimen dial indicator error less tha
n 10% of the average) to find the cent
er.
Observation period for 210 days.
试件示意图/
Schematic diagram
of specimen
试验装置和测点/ Testing
apparatus and measure point

22. 温，湿
度变化
/
Tempe
rature
and
humidi
ty

23. 试件示意图/ Schematic
diagram of specimen
试验加载示意图/Schematic
diagram of loading

24. 试验装置及测点布置/
Testing apparatus and
measure point
试 件
编号/
λ
A-1—
A-2
600 20.79
B-1—
B-2
800 27.7
C-1—
C-2
1000 34.6
D-1—
D-2
1400 48.5
E-1—
E-2
1600 55.44
试件尺寸/Specimen size
所有试件均为100x100mm截面，
在试件四个侧面中央布置横向与
竖向应变片，在长度方向1/2处
相邻两个面布置位移计。以
1.5mm/min速度加载至破坏，每
隔5s记录一次应变与位移。
All specimens’section are 100×100，
the vertical and horizontal strain gag
e is decorated in the specimens’centr
al place of four sides ，
the displacement meter is decorated i
n the1/2 length direction of two adjac
ent surface .At 1.5 mm/min speed loa
d to damage, every 5 s record a strai
n and displacement.

25. 试 件 编 号 /
S p e c i m e n
number
l0/mm λ / S l e n d e r
proportion
Nmax/KN Δ/% 破 坏 模 式
/Failure mode
A-1—A-2 600 20.8 686.4 0 强 度 破 坏
/ S t r e n g t h
fracture
B-1—B-2 800 27.7 676.6 1.6 强度破坏
C-1—C-2 1000 34.7 582.8 15.1 强度破坏
D-1—D-2 1400 48.5 520.4 24.2 失 稳 破 坏
/ B u c k l i n g
failure
E-1 —E-2 1600 55.4 440.7 35.8 失稳破坏
重组竹柱特征参数统计/ Statistics of the characteristic
parameters for the reconsolidated bamboo columns
注：Δ为试件轴压峰值荷载相对A柱轴压极限承载能力的降低值

26. A柱破坏形态/ Failure
mode of column A
C柱破坏形态/ Failure
mode of column C
E柱破坏形态/ Failure
mode of column E
E柱试验状态/Trystate of
column E

27. A柱荷载-位移相关曲线
/Curves of load-displacement
for column A
C柱荷载-位移相关曲线/
Curves of load-
displacement for column C
E柱荷载-位移相关曲线/ Curves
of load-displacement for column
E

28. A柱荷载应变相关曲线/Load
-strain curve of column A
C柱荷载应变相关曲线/ Load -
strain curve of column C
E柱荷载应变相关曲线/Load -
strain curve of column E

29. 材料力学特性/
Material mechani
cs properties
确定了材料的物理
力学参数。碳化重
组竹表现为脆性破
坏，非碳化重组竹
表现为延性破坏。
Determine the phys
ical and mechanica
l parameters of mat
erials. Carbide reco
mbinant bamboo ch
aracterized by britt
le failure, the carbi
de recombinant ba
mboo characterize
d by ductile fractur
e.
长期荷载下的
受弯性能/ The
bending
performance under
the long-term load
在一定比例的长期
荷载作用下，梁的
挠度基本稳定。
The deflection of
beam is stable
under the certain
percentage of the
long-term load.
短期荷载下的
受弯性能/ Flexural
performance under the
short-term load
碳化重组竹梁荷载位移关系基
本为线性，破坏为脆性。
非碳化重组竹梁的荷载位移关
系曲线下降段较长，延性较好。
The relationship of carbide
recombinant bamboo beams is
basically linear，its damage is
brittle. the decline segment of
the load-displacement curve of
the recombinant bamboo which
is not carbide is longer and the
ductility of the recombinant
bamboo that is not carbide is
better.

30. 长期荷载下的受压性能/
The compression
performance under the
long-term load
轴压比小于0.5时其变
形较为稳定，且受到温
度，湿度影响。
When the axial
compression ratio is
less than 0.5，the
deformation is
relatively stable，and
it also affected by the
temperature and
humidity.
短期荷载下的受压性能
/ The compression
performance under the
short-term load
具有良好的力学性能与变形
能力。承载力随着长细比的
增大而逐渐降低，且逐渐由
强度破坏转变为失稳破坏。
It has good mechanical
properties and deformation
capacity.Bearing capacity
gradually reduce with the
increasing slenderness ratio,
and its damage gradually
transform from the strength
to the unstability.