Selection of Soil Models and Parameters for Geotechnical Engineering Application

2005 ◽  
Author(s):  
Ronald B. J. Brinkgreve
Keyword(s):  
Geotechnical Engineering ◽  
Engineering Application ◽  
Selection Of

Application of Grouting Technology in the Geotechnical Engineering

2015 ◽  
Vol 744-746 ◽  
pp. 442-446 ◽  
Author(s):  
Qiang Qiang Miao ◽  
Qing Qing Zhu ◽  
Shu Ping Jiang
Keyword(s):  
Geotechnical Engineering ◽  
Engineering Application ◽  
Reference Value ◽  
Technology Selection ◽  
Development Status ◽  
Practical Guidance ◽  
Tunneling Engineering ◽  
Selection Of

Through detailed investigation to development status of grouting technique, summarizes the classification of geotechnical grouting technology, selection of materials grouting, Finally, by anchoring engineering and tunneling engineering described in detail grouting process，grouting order, grouting parameters and grouting end standard in the geotechnical engineering application，This research has practical guidance and theoretical reference value for similar projects.

Numerical Study on Explosion Cutting Process of PMMA Plate and Key Factors Influence on Cutting Performance

2018 ◽  
Author(s):  
Lei Ge ◽  
Yantao Wang ◽  
Huipeng Hu ◽  
Lijun Li ◽  
Yiben Zhang
Keyword(s):  
Numerical Study ◽  
Engineering Application ◽  
Material Model ◽  
Cutting Performance ◽  
Cutting Process ◽  
Transient Pressure ◽  
Key Factors ◽  
Explicit Solver ◽  
The Relationship ◽  
Selection Of

Polymethylmethacrylate (PMMA) has been widely utilized to manufacture the covers of aircraft cockpits, naval vessels, car windows and so on, due to their high transmittance, low density, easy processing formability, high corrosion resistance and excellent mechanical properties. Under special conditions such as ejection lifesaving, the PMMA plate needs to be split precisely by explosion cutting technology. Hence, an accurate numerical simulation of PMMA structures is significantly important in engineering application. This paper aims to study the cutting behavior of PMMA plate numerically and investigate the influencing factors on cutting performance of PMMA plates. First of all, the simulation of explosion cutting process of PMMA plate is carried out by a non-linear explicit solver in LS-DYNA software using the fluid-solid coupling method. Jones-Wilkins-Lee (JWL) equation of state is used to simulate the relationship between the transient pressure and specific volume of explosives during explosion. The material model considering failure behaviors is used in the simulation. Additionally, the influence of explosive dosage as well as explosive type on the cutting performance of PMMA plate is investigated. Furthermore, the effect of PMMA geometry size on cutting performance is discussed. This study contributes to the knowledge for the design of PMMA structures which needs explosion cutting and the selection of explosive dosage and explosive type.

Superior Research for Selection of Bracing Structure of Deep Pit Foundation Based on Fussy Theory

2013 ◽  
Vol 838-841 ◽  
pp. 214-218
Author(s):  
Dong Li
Keyword(s):  
General Model ◽  
Engineering Application ◽  
Hard Work ◽  
Deep Foundation ◽  
Scientific Methods ◽  
Deep Pit ◽  
Practical Engineering ◽  
Fuzzy Math ◽  
Selection Of

Before the construction of the deep pit foundation, we must choose a project. Although there aren't many projects to be chosen as usual, we often feel that it's a very complex and hard work. Actually there is no a mature and general model to use. In this paper, the author attempted to use the theory of fuzzy math to establish a former to select the best project, meanwhile provided two ways to solve how to quantify the qualitative targets and how to determine the weights of the targets. Finally they were confirmed to be useful and successful by a practical engineering application. It is worthily to popularize these scientific methods in construction and management in deep foundation pits.

Application of the Combinatorial Inspection Method on the Buried Steel Pipelines in China

2006 ◽  
Author(s):  
Bing Liu ◽  
Renyang He ◽  
Hong Zhang ◽  
Jian Shuai
Keyword(s):  
Engineering Application ◽  
Proper Selection ◽  
Inspection Method ◽  
Know How ◽  
Direct Assessment ◽  
High Efficient ◽  
External Corrosion ◽  
Engineering Practices ◽  
Inspection Techniques ◽  
Selection Of

In general, the pipeline external corrosion direct assessment should be synchronously done by two or more inspection tools. Hence, it is very important to know how to develop the high-efficient and accurate combinatorial inspection techniques for engineering application. In this paper, the advantages, disadvantages and adaptabilities of the existing techniques and instruments are reviewed. Considering the technical difficulties in Chinese engineering practices, five different combinatorial inspection techniques were then brought forward. The proper selection of the combinational inspection technique can be determined by the inspection aim, servicing environment and type of the pipeline, soil, and so on. However, it should be noted that each combinatorial inspection technique can be used most of the time with some demerits. Engineering application showed that the proposed techniques can be directly and efficiently used to assess the pipeline external corrosion.

Chilean Structural Design Guide for Low-Volume Roads

2003 ◽  
Vol 1819 (1) ◽  
pp. 306-313 ◽  
Author(s):  
Guillermo Thenoux ◽  
Alvaro González ◽  
Felipe Halles
Keyword(s):  
South Africa ◽  
Structural Design ◽  
Engineering Application ◽  
Climate Conditions ◽  
Design Charts ◽  
Low Volume Roads ◽  
Mechanistic Analysis ◽  
Design Guide ◽  
Low Volume ◽  
Selection Of

The practical and theoretical principles used for development of the Chilean Structural Design Guide for Low-Volume Roads 2002 and the guide’s conceptual model and hypotheses are presented. The design guide is a simplified methodology for selection of different pavement structure alternatives for a variety of conditions (traffic, soil support capacity, and climate). The design guide provides solutions for four traffic ranges, six ranges of soil support capacity, and three climate conditions (dry, normal, and saturated). The design charts contain more than 150 solutions. Pavement structural design was solved by mechanistic analysis with the BISAR computer program and fatigue models developed in South Africa. The design guide may be considered an engineering application with upto- date research tools and results.

Application Research of Orthogonal Analysis for Components Selection of Heat-Resistant Concrete

2014 ◽  
Vol 1015 ◽  
pp. 72-76
Author(s):  
Xing Wei Xu ◽  
Ji Yao
Keyword(s):  
Raw Materials ◽  
Engineering Application ◽  
Application Research ◽  
Range Analysis ◽  
Heat Resistant ◽  
Technical Requirements ◽  
Orthogonal Analysis ◽  
The Cost ◽  
A Company ◽  
Selection Of

Combined with the heat-resistant concrete needed for a company combustor, based on the availability of local raw materials, the orthogonal test was used, then by the variance analysis and range analysis, the components of the heat-resistant concrete which could meet the technical requirements of the project were selected. Engineering application results showed: the components of the concrete could meet technical indicators for the engineering application, and effectively reduced the cost of production of heat-resistant concrete.

scholarly journals A Microseismicity-Based Method of Rockburst Intensity Warning in Deep Tunnels in the Initial Period of Microseismic Monitoring

Energies ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2698 ◽  
Author(s):  
Guangliang Feng ◽  
Manqing Lin ◽  
Yang Yu ◽  
Yu Fu
Keyword(s):  
Cluster Analysis ◽  
Geotechnical Engineering ◽  
Initial Period ◽  
Engineering Application ◽  
Microseismic Monitoring ◽  
Sichuan Province ◽  
Economic Losses ◽  
Hydropower Station ◽  
The Novel ◽  
Jinping Ii Hydropower Station

Rockburst disasters in deep tunnels cause serious casualties and economic losses. It is a great challenge to make a warning for rockbursts in geotechnical engineering. In this work, a microseismicity-based rockburst intensity warning method is proposed that is suitable for use in deep tunnels in the initial period of microseismic (MS) monitoring. The method first involves collecting information on a sample of no more than five cases. Then, the event to be analyzed is combined with the sample events and subjected to cluster analysis. Finally, a rockburst intensity warning is generated according to the results of the cluster analysis or after a second cluster analysis. It is a comprehensive, multi-parameter rockburst intensity warning method that only needs a few rockburst cases for input which makes it suitable in the initial period of MS monitoring. The method also incorporates the novel idea of a second cluster analysis. An engineering application based on deep tunnels in the Jinping II hydropower station in Sichuan Province, China, shows that the rockburst intensity warning results based on the proposed method agree well with the actual situations in four tests carried out. The method will enrich the techniques used to warn of rockbursts based on microseismicity.

Reliability Study on Physical Layer of CAN Bus in Engineering Application

2011 ◽  
Vol 295-297 ◽  
pp. 2460-2465
Author(s):  
Fu Hua Kuang ◽  
Bu Gong Xu ◽  
Gui Yun Liu
Keyword(s):  
Power Plants ◽  
Can Bus ◽  
Engineering Application ◽  
Physical Layer ◽  
Matching Method ◽  
Interface Circuit ◽  
Electric Actuator ◽  
Bridge Type ◽  
Application Fields ◽  
Selection Of

In power plants and other complex industrial application fields, incomprehensive design can make the system less durable. The fault of the fieldbus, in principle, comes from the physical layer, whose lay-out directly affects the fieldbus’s reliability. This article discusses from four aspects on how to improve the reliability of the physical layer of CAN bus, which include the selection of cables and connectors, the length of the bus and branch lines, the matching method of terminal resistor, and the interface circuit of hardware. Furthermore, the article presents the plan of using H-bridge type matching terminal, which aims at solving signal-reflection problems. Finally, the theory is verified through the application of intelligent electric actuator with the CAN bus.

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