Effect of the low shear strength of the resin layer on the carrying capacity of glass-reinforced plastic pipe

1971 ◽  
Vol 3 (3) ◽  
pp. 372-374
Author(s):  
G. G. Portnov
Keyword(s):  
Shear Strength ◽  
Carrying Capacity ◽  
Resin Layer ◽  
Plastic Pipe ◽  
Reinforced Plastic ◽  
Low Shear

Dynamic bending of plates with low shear strength

1972 ◽  
Vol 4 (4-6) ◽  
pp. 544-549
Author(s):  
B. L. Pelekh ◽  
G. A. Teters
Keyword(s):  
Shear Strength ◽  
Dynamic Bending ◽  
Low Shear

Flexure of beams with low shear strength on an elastic foundation

1971 ◽  
Vol 3 (5) ◽  
pp. 582-585 ◽  
Author(s):  
Yu. M. Tarnopol'skii ◽  
A. V. Roze ◽  
R. P. Shlitsa
Keyword(s):  
Shear Strength ◽  
Elastic Foundation ◽  
Low Shear

Load-carrying capacity of reinforced plastic pipes sealed with a film

1977 ◽  
Vol 9 (9) ◽  
pp. 1039-1044
Author(s):  
G. P. Zaitsev ◽  
V. N. Sud'in
Keyword(s):  
Carrying Capacity ◽  
Load Carrying Capacity ◽  
Plastic Pipes ◽  
Reinforced Plastic ◽  
Load Carrying

Design of a Large Diameter Steel Reinforced Plastic Pipe

2011 ◽  
Author(s):  
Jun Shi ◽  
Jing Rao ◽  
Jianfeng Shi ◽  
Ping Xu ◽  
Taiqing Shao ◽  
...  
Keyword(s):  
Structural Parameters ◽  
Steel Wire ◽  
Large Diameter ◽  
Small Diameter ◽  
High Strength ◽  
External Pressure ◽  
Wire Mesh ◽  
Plastic Pipe ◽  
Reinforced Plastic ◽  
Steel Wire Mesh

A steel reinforced plastic pipe (PSP), which is composed of two layers of high density polyethylene (HDPE) matrix and a high strength steel wire mesh skeleton, has wide applications in many industrial areas, such as gas and petroleum transportation, etc. In order to achieve higher efficency and lower costs, a large diameter PSP has been developed. However, requirements of the large diameter PSP in safety and economy are much higher, compared with those small diameter PSPs, and some potential problems should be taken into account. In this paper, relevant structural parameters of the large diameter PSP are determined, based on a previously proposed model, and a short-term burst test is carried out. The experiment results agree with the theoretical results quite well. Subsequently, the resistance of vertical pressure and uniform external pressure are evaluated by using experiment investigation and finite element method, respectively. And corresponding results indicate the large diameter PSP with determined structural parameters is qualified to use.

Establishing the law of distribution of load-carrying capacity of fiberglass-reinforced plastic tubes

1976 ◽  
Vol 10 (6) ◽  
pp. 885-888
Author(s):  
A. M. Sinyukov ◽  
B. I. Bel'chich ◽  
V. V. Kostylev ◽  
V. N. Onoprienko
Keyword(s):  
Carrying Capacity ◽  
Load Carrying Capacity ◽  
Reinforced Plastic ◽  
Load Carrying ◽  
The Law

scholarly journals Application of FRP Bolts in Monitoring the Internal Force of the Rocks Surrounding a Mine-Shield Tunnel

Sensors ◽  
2018 ◽  
Vol 18 (9) ◽  
pp. 2763 ◽  
Author(s):  
Zhen Liu ◽  
Cuiying Zhou ◽  
Yiqi Lu ◽  
Xu Yang ◽  
Yanhao Liang ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Shear Strength ◽  
Internal Force ◽  
Shield Tunnel ◽  
Corrosive Environment ◽  
High Tensile Strength ◽  
Technological Support ◽  
Remote Monitoring System ◽  
Initial Support ◽  
Low Shear

Monitoring the internal force of the rocks surrounding a mine-shield tunnel for the initial support of a mine-shield tunnel, in complex geological and hydrological environments, requires bolts with specific features such as high tensile strength, low shear strength, good insulation and resistance to corrosion. As such, internal force monitoring has become an important issue in safety monitoring for such tunneling projects. In this paper, the adaptability of a mine-shield tunnel project in a corrosive environment is investigated. A fiberglass reinforced plastic (FRP) bolt with high tensile strength, low shear strength, resistance to fatigue, non-conductivity and resistance to corrosion is used as a probe in tandem with an anchor-head dynamometer to monitor the internal force of the rocks surrounding a mine-shield tunnel for initial support. Additionally, solar energy collection technology is introduced to create a remote monitoring system. Using a 2.5 km long railway tunnel located in the northeast of the Pearl River Delta of China as a case study, the present study shows that, compared with a conventional steel bolt, the FRP bolt has advantages, such as avoidance of the risks associated with the shield machine, insulation and resistance to corrosion. As a probe, the response of the FRP bolt to events such as a blasting vibration and a construction disturbance that results in internal changes in the surrounding rock demonstrates a clear pattern that is appropriate for monitoring the internal force of the rocks surrounding a mine-shield tunnel in a corrosive environment. FRP bolt-based monitoring not only provides new technological support for controlling the risk involved in the initial support of a mine-shield tunnel but can also be widely deployed in projects with special requirements for disassembly, conductivity and corrosion.

The effect of soil strength on germination and emergence of wheat (Triticum aestivum L.). I. Low shear strength conditions

Soil Research ◽  
1985 ◽  
Vol 23 (4) ◽  
pp. 577 ◽  
Author(s):  
N Collis-George ◽  
P Yoganathan
Keyword(s):  
Triticum Aestivum ◽  
Shear Strength ◽  
Root Elongation ◽  
Experimental Studies ◽  
Fine Sand ◽  
Triticum Aestivum L ◽  
Initial Soil ◽  
Soil Shear Strength ◽  
Coleoptile Elongation ◽  
Low Shear

Experimental studies of the germination and emergence of wheat as affected by soil shear strength are reported. A fine sand under saturated conditions was used as the seed bed and the shear strength of the seed bed was increased to 10 kPa (0.1 bar) by externally applied loads. From the results it is concluded that the initial soil shear strength in this range has little effect on germination. However, coleoptile growth and root elongation are markedly reduced in the range 0-2.2 kPa such that total emergence is reduced to 7% at 9.3 kPa in this fine sand. The results clearly show that coleoptile elongation is more affected than root elongation by the same mechanical stress. Roots are found to be thicker and coleoptile thinner under increasing soil shear strength conditions.

Mechanical Properties of Adobe Masonry in Shear Test

2011 ◽  
Vol 71-78 ◽  
pp. 3691-3694
Author(s):  
Feng Wu ◽  
Gang Li ◽  
Jin Qing Jia ◽  
Hong Nan Li
Keyword(s):  
Shear Strength ◽  
Shear Failure ◽  
Small Towns ◽  
Test Results ◽  
Double Shear ◽  
Adobe Masonry ◽  
Force Displacement ◽  
Good Workability ◽  
Loading Procedure ◽  
Low Shear

There are many adobe buildings in small towns and villages of China, which have low shear strength of mud in joints and suffer great damages in big earthquakes. Mud with three different proportions of soil and sand are used in adobe masonry to discuss shear behavior and strength in this paper. Adobe samples in tests were laid by mud with clay-silt soil: construction medium sand at ratios of 1:0.8, 1:1.0 and 1:1.2 respectively, and adobe brick at ratio of 1:1.0 which has good workability. Short straws are mixed into mud and brick at 0.5% by weight. By monotonous loading procedure parallel to bed joint, two bed joints in prisms behave double shear failure in sequence. Meanwhile shear strengths and force-displacement curves are also obtained. Fitting equation for adobe shear strength is calculated, and the calculated results are agree with test results well. Shear failure of adobe masonry behaves brittle from force-displacement curves.

Correlation analysis and strength of glass-reinforced plastic pipe

1972 ◽  
Vol 4 (4-6) ◽  
pp. 810-814
Author(s):  
I. P. Dimitrienko ◽  
N. S. Zueva ◽  
V. I. Suminov ◽  
V. I. Smyslov
Keyword(s):  
Correlation Analysis ◽  
Plastic Pipe ◽  
Reinforced Plastic
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