bluuebunny/crossref_metadata_2025 huggingface dataset:
Integration of a Virtual 3D Model of a Robot Manipulator with its Tangible Model (Phantom)
Authors: Herbuś Krzysztof , Kost Gabriel , Reclik Daniel , Świder Jerzy
Published: November 2013

The study outlines the method for integration of a 3D model of a robot manipulating mechanism with its phantom. Robots are usually programmed by means of their control panels (teachpendants) or with use of relevant software dedicated for programming aid (e.g. Robcad). An alternative method for programming of robots may consist in application of a tangible robot model (a phantom) that is dedicated for programming FANUC ARCMate100iB robots. The phantom is used as a real object that enforces defined positions for individual members of the manipulator virtual model. For that purpose a model of a real robot manipulator was constructed at the 1:4 scale with use of the fast prototyping methods and the model was subsequently used as the enforcing object. Since accurate potentiometers were installed on each of the manipulator rotation axis the information about specific angular positions of the individual members of the manipulator could be provided.
Environmental Analysis Procedure for Implementation of Environmental Management System ISO 14001 in Shipping Company
Authors: Bostina Alina Lucia , Bostina Aurel
Published: November 2013

A lot of shipping companies took initiative to implement the Environmental Management System ISO 14001. Despite having already implemented the mandatory Safety Management System under provisions of ISM Code, this initiative complement and leverage the existing range of initiatives being implemented in the field of energy efficiency, air pollution, waste management and marine environment preservation, notably. This paper aims to present the procedure for environmental analysis that a certain shipping company chose to implement ISO 14001.
Initiatives of Textile Industry Organizations towards Environmental Issues
Authors: Butnariu Anca , Avasilcăi Silvia
Published: November 2013

The textile industry is the subject of many environmental regulations and voluntary and administrative instruments. This tendency, together with the increasing general public interest, determined changes in the management of any company that wishes to fulfil the legislative demand and the demand of reporting. The first objective of this study is to establish in what extent the implementation of an environmental management system has an impact on organisational variables. The second objective is to identify the influence factors for the environmental management performance. The results of the study represent the base of some recommendations for the Romanian textile organisations so that they obtain as many advantages as possible from their strategy of sustainable development. We have used the survey method. We sent a questionnaire and we have received the answers of the 31 representatives in all sectors of the textile industry.
Assessment of the Risk Parameters and their use in the Vessels Traffic Management
Authors: Ghiba Mihai
Published: November 2013

This paper-work develops methods to calculate and applying the risk parameters and risk reserve in transmitting any decisions and information on the management of river traffic of vessels determined based on concept of quality assessment of the assembly "ship-crew-waterway-RIS information means" by selectively applying the relationship "Frisk+Fsafety= 1" in various conditions. Below are presented some examples of calculation of the reserve risk and submission of the naval information and the decision application modality for a dynamic optimization of the navigation conditions in the activity of river vessels traffic management.
Conceptual Research Model Regarding the Effects Resulted from the Implementation of Environmental Management System at Organization Level
Authors: Herghiligiu Ionuţ Viorel , Lupu Mihaela Luminiţa , Robledo Christian , Kobi Abdessamad
Published: November 2013

Nowadays many organizations worldwide have/are implemented/ implementing an environmental management system (EMS) according to ISO 14001, considering the context, the need to minimize negative environmental impacts, and long-term benefits. It has been observed for decades that for successful implementation of EMS are required different changes in the organizational structure, chances that lead to a successful integration and operation of this management system. Studying the literature it was observed the inexistence of relevant investigations conducted at Romanian organizations level, investigations which include different methodologies with models adapted to the particularities of the Romanian context, and relevant results for the current situation (PA). This paper intends to resolve the problem covered through the following general steps: I. identifying the problem (MP); II. goal setting: conceiving a model to analyze the effects produced at organizational structure level as a result of implementing an EMS; III. collecting data / information / knowledge from the literature (focusing on previous studies conducted starting from Mintzberg and others (authors as C. Hunt, E. Auster, M.C. Lopez-Fernandez, A. Zutshi, A. Sohal and so on) and from discussions with various managers of the environment department of several organizations located in the NE Romania; IV. the construction of the model; V. validate the constructs from the proposed model. The proposed research analysis model approaches three general dimensions that should characterize finally the effects resulted from the implementation of environmental management system at organization level; dimensions: I. aspects of organizational structure: I.a. Specialization (S1.horizontal; S2.vertical), I.b. Decentralization (D1.horizontal; D2.vertical), I.c. Formalization, I.d. Environmental trainings (per profile), I.e. Professional competence, I.f. Processes/ systems orientation, I.g. Systems/ process planning and control, I.h. Coordination/ cooperation in environmental issue; II. The effects of EMS implementation/ integration on organizational structure; and III. The quality of the organization's EMS integration
Technological Entrepreneurship: Success Factors as Perceived by Potential Young Entrepreneurs
Authors: Nacu Cosmin Mihai , Avasilcăi Silvia
Published: November 2013

This research paper aims to propose and empirically test a theoretical model, positing relationships among entrepreneur, technology and resources. The applied methodology was completing a questionnaire survey by a random sample of undergraduate management and engineering students across five Romanian faculties. The results were based on structural equation modeling analysis. Results provide strong support for the proposition that the success of a good business idea strongly depends on some factors, including the capabilities of an entrepreneur, on the technology used to implement the idea and on the necessary resources. The paper demonstrates that the success of an idea in technological entrepreneurship, based on the potential young entrepreneurs point of view is influenced by the characteristics of the young entrepreneur, by his capabilities and his knowledge. The success is also influenced in some proportions by the innovation of technology, its development and globalization. The third category of the success factors is resources, which includes temporal resources, material resources, financial resources and informational resources. The conclusion of this research is that the most important factor for a successful business idea is the entrepreneur.
CFD Study on must of Grapes Separation in a Hydrocyclone
Authors: Cârlescu Petru , Tenu Ioan , Baetu Marius , Rosca Radu
Published: November 2013

Abstract. Hydrocyclones are increasingly used in the food industry for various separation and purification. In this paper, an optimization was made to design a hydrocyclone model using CFD (Computational Fluid Dynamics). CFD simulation is performed with FLUENT software by coupling the Reynolds Stress Model (RSM) for must of grapes flow with Discrete Phase Model (DPM) for solid particles trajectory. Coupling of discrete phase (particles) and continuous phase (must of grapes) in the mathematical model is set so that the continuous phase to influence discrete phase. Tracking particles traiectory in this hydrocyclone allows advanced degree is separation so obtained to the maximum particle size approaching the size of a yeast cell 10 μm, without separating them. Hydrocyclone dimensional designed simulation was performed and analyzed on an experimental pilot plant for three different must flow rates supply. Introduced particle flow rates simulation and experiment does not exceed 10% of the must flow rates. The degree of separation obtained is in agreement with experimental data.
Cloud Computing Environment for Engineering and Business Education
Authors: Raicu Gabriel , Raicu Alexandra
Published: November 2013

The authors present the development of a scientific cloud computing environment (SCCE) for engineering and business simulations that offers high performance computation capability. The software platform consists of a scalable pool of virtual machines running a UNIX-like (Linux) or UNIX-derivative (FreeBSD) operating systems using specialised software based on modelling engineering processes and focused on business training and predictive analytics using simulations. The use of advanced engineering simulation technology allows engineers to understand and predict the future performance of complex structures and systems designs which can be optimized to reduce risk, improve performance or enhance survivability. A key component of cloud computing in Universities as well as in other research centers: they can share computing resources beyond their technical capabilities. With cloud computing, this allows them all to have access to large scales processing power based on KVM (Kernel based Virtual Machine). Our solution provides a more productive approach: a full scale virtualised computer with scalable storage space and instantly upgradable processing capability. It has more flexibility than other network computing systems and saves precious research time and money. Unlike the existing systems, the scientific community can receive support from a large number of specialists who may contribute by in a collaborative way.
Factors Influencing Employees' Motivation for Knowledge Communication
Authors: Rusu Gabriela , Avasilcăi Silvia
Published: November 2013

Achieving high performances in organizations requires motivated employees who engage in training activities, acquiring knowledge, new abilities and skills, which they intend to share and communicate in order to improve the performance of their work activities and thus to contribute to the overall organizational performance. Therefore, by establishing the most important motivational factors for key employees there can be identified various aspects which determine employees to use, communicate and share the knowledge, skills, and attitudes acquired during training activities. This research aims at bringing into light some analyses related to employees motivation for attending training programs and knowledge communication during and mostly after training programs and the influence on the improvement of work activities and the obtained job performance. There will be also identified the intrinsic and extrinsic incentives which stimulate the employees to obtain new knowledge and skills and to communicate them, explaining as well the influence on the organizational outcomes. Therefore, by analyzing the prevalent motivational factors which determine managers and employees to engage themselves in training activities, we could establish also the degree of employees motivation to attend training programs, to communicate knowledge and improve work activities and organizational outcomes. In this view the investigation carried out by the authors was based on quantitative research techniques, by means of a questionnaire based survey using a non-probabilistic sampling method due to the initial stage of this research and its current limitations. The sample will be based on industrial firms from the North-East Region of Romania. There will be analyzed the relationships between employees motivation for knowledge communication, fostered by the training programs attended, and the performance improvement of their activities, attempting to demonstrate the influence of employees motivation to communicate the acquired knowledge during training programs on improving activities and the performance level at the workplace. It is noteworthy that this research study provides an integrated framework illustrating the main findings regarding the factors which motivate employees working in industrial companies to participate in training activities and to communicate the knowledge acquired during training programs, highlighting as well the influence of these issues on improving their work activities and the overall company performance. This framework could be further used by managers and academia as well, as a vehicle for improving organizational performance.
The Importance of Understanding the Stakeholders in Industry Actions - A Corporate Social Responsibility Perspective
Authors: Teodoreanu Ioana , Ivanov Cristian Ionut
Published: November 2013

A great pressure has arisen lately in the business world by movements like occupy Wall Street, or more concerning economic crises started in 2008. Due to this pressure, companies have to be more careful and act more responsibly. In the recent years, Corporate Social Responsibility (CSR) has been seen like a panacea of all stakeholders problems, more and more reports of CSR being published on companies website. However, it has been proven that just to claim actions of social responsibility, does not mean those companies are truly responsible. As expected, this behavior is penalized by a part of stakeholders. In this context, for each firm is important to know which are the most representative stakeholders, and how a certain situation could affect this scale. For explaining this fact, this paper analyzes the case of Brent Spar, pointing how an industrial giant like Shell, using a wrong CSR policy, could lose both money and image capital. In order to do that, in the first part is discussed the CSR from the perspective of stakeholder theory. Although it is present since 1950s in the United States of America and evolved all over the world like an all known concept, CSR does not have yet an universally accepted definition. Therefore, in this article was stated a definition for CSR from the stakeholder theory approach, in order to understand the Brent Spar actions and implications. In the second part of the paper are analyzed the steps taken by both sides, on one hand by Shell and on the other, by some of the stakeholders. The actions have been explained from the CSR paradigm perspective. Finally, it is proved why Brent Spar is a case of CSR failed, and how, by neglecting of some stakeholders categories, a company could pay important costs. Moreover, the paper demonstrates that the image of one company, from a specific area, could affect the all industry field. Therefore, a proper identification of key stakeholders, a good communication with those and flexibility in decision, could be the success factors for companies, and may lead to successful CSR. Correct CSR actions become an imperative in nowadays industrial scenario, being viewed as a change imposed by globalization and by the transnational nature of CSR.
Contributions on Design and Accomplishing of the Whirling Thread Cutting Devices that could be Adapted for Ordinary Lathes
Authors: Creţu Gheorghe
Published: November 2013

The cutting of the threaded surfaces using whirling thread cutting devices is considered as one of the most productive cutting methods. From all the whirling thread cutting methods that one which utilise an inner point of contact had became the most utilised, because of the advantages which characterise the cutting process in this case:
Considerations on the Micro-Indentation and Differential Scanning Calorimetry of Arboform Reinforced with Aramid Fibres
Authors: Plavanescu Simona , Nedelcu Dumitru , Lohan Nicoleta Monica
Published: November 2013

The researches made in the last years have shown that lignin is a substance that gives wood strength. It can be found in the granular form that can be melted and injected. Lignin is used to obtain material with multiple uses such as electronics, food containers etc. This material is known as "liquid wood". Fibers with high specific resistance and high elasticity modules, such as aramid fibers, are used to create high performance composites. Here are the main physical-mechanical properties of aramid fibers: high tensile strength, high shock resistance, high stresses and fatigue, excellent characteristics of damping vibrations, exposure characteristics preservation at temperatures ranging from-700C to + 1800C, flame resistance (self-extinguishing, not melting), low smoke emission, corrosion stability, good electrical characteristics, low conductivity and low dielectric constant. The main areas of use of aramid wires are: special clothes resistance to cutting and high temperature components for materials composite, ropes, cables, lashing straps, safety equipment for the armed forces, police, aircraft, etc. This research used Arboform L, V3 Nature reinforced with aramid fiber. The experimental research plan observes the Taguchi methodology with 6 input factors, each with two levels of variation. The input parameters effects are analyzed on the mechanical properties of the specimens obtained. Micro-indentation tests and differential scanning calorimetry were conducted. The studied test samples showed the following mean recovery values: 31.219μm for the first sample, 31.059μm for the second sample and 25.996μm for the third sample. Three extreme points were detected on the DSC thermogram: an endothermic peak occurs up to 380 K (I) and an exothermic one of higher intensity (II); above 430 K the DSC thermogram shows a deviation from linearity of the flow heat, which suggests a melting phenomenon. The first variation of the heat flow can be attributed to the transformations that occur in solid form in the sample subjected to heating, the first adsorption heat exchanger (peak I) and the second heat releasing (peak II). Comparing the amount of heat absorbed by heat dissipation, one may notice that the exothermic conversion is increased. The initial transformation temperature (Ts 10) corresponds to 10% of the total peak area while the final transformation temperature (Tf 90) corresponds to 90% of the total surface area.
Choosing the Optimum Method of Treating the Ballast Water Onboard Ships
Authors: Acomi Nicoleta , Acomi Ovidiu Cristian , Bostina Alina Lucia , Bostina Aurel
Published: November 2013

The transport of aquatic organisms from one place to another by ships ballast water has created substantial environmental impact on discharging areas. In order to avoid that, the International Maritime Organization (IMO) recommends treating the ballast water by different methods. The paper presents four methods of managing ballast water, accepted by the Organization: treating by filtration and irradiation with ultraviolet light, treating by de-oxygenation, treating with biocide and treating by heating. The comparative analysis of the treating technologies allows the ship-owner to choose such equipment by analyzing the advantages and the disadvantages. Considering that not only the quality parameters are important but also the cost, the study is completed by a mathematical model for calculation of unit cost for treating ballast water onboard. The purpose of this study is to develop an instrument for selecting the optimum method of ballast water treatment suitable for each type of vessel or voyage, so the ship-owners would be able to choose a treatment method comparing the costs, based on the specific requirements.
Energy Review on a Maritime Energy Transfer System for Comercial Use
Authors: Preda Andrei , Scupi Andrei Alexandru
Published: November 2013

Despite the low energy and lower maintenance benefits of marine heat pump systems, little work has been undertaken in detailed analysis and simulation of such systems. This heat pump system is very attracting increasing research interests, since the system can be powered by thermal energy that can be provided by a renewable source: the difference of temperature between the ocean water layers.This paper focuses on the annual energy consumption and COP ( performance coefficent) of a marine heat pump system implemented for comercial use. This unconventional maritime systems of energy transfer would solve some of the pollution problems that arise from the use of conventional fuels . By using this system can make a pretty big energy savings in heating our homes and in preparation of hot water for domestic use.This energy consumption takes into account the heating and cooling needs of structure along different periods of time, such as winter and summer. Moreover, for each year period, we compared the heat pump efficiency simulated for our cost line with other tree tipes of heat pumps that are using diffrents primary agents. To highlight the performance of heat pump used for this study we coupled it with solar panels. The simulation, performed with TRNSYS (Transient Systems Simulation Program), was made for different working conditions simulating real conditions and temperature variations that occur in a year in the Black Sea coastal area.This experiment is intended to emphasize that marine energy potential that we have and also the advantages of using unconventional energy in relation to the use of classic fuels.This unconventional system of thermal energy conversion can be applied to both residential and commercial areas bringing an important benefit both people and the environment.
Modern Education Facilities for CAD/CAM/CAE Training of the Future Maritime Engineers
Authors: Raicu Alexandra , Oanta Emil
Published: November 2013

This paper presents the modern education principles for Computer Aided Design, Computer Aided Manufacturing and Computer Aided Engineering (CAD/CAM/CAE) Training Centre of the future maritime engineers. To improve, share and distribute our training we combine the classical pedagogical approaches with the web-based learning which provides interactivity for students, the possibility of exchanging views, opinions and materials in a multimedia environment. According to the actual concept, the teaching and learning will be interactive and live. The paper presents the means to enhance the quality of training programs of study using the long term experience of the authors in this field. The authors settle the principles of implementation of a special Training Centre using e-Learning in Constanta Maritime University (CMU) and introduce the modern concepts and technologies for the acquisition of Product Lifecycle Management knowledge.
Intelligent Collaborative Platform for Testing a Product by Virtual Prototyping
Authors: Dobrin Carmen , Cioca Marius
Published: November 2013

This paper presents an integrated platform, based on collaborative environment, which can improve the design and prototyping activities. Collaborative activities in supporting product development and design during all product life-cycle, needs a Digital Factory framework. Demonstration of prototyping in real-time where are available changes in geometry, constraints, or other parameters can be based on virtual and augmented platforms. The mechanical and non-mechanical design needs, or any other virtual experiment can be experimented in virtual laboratory where researchers located in different geographical zones, can work on the improvement of product, by sharing resources and research results. Key words: Collaborative platform, virtual prototyping, virtual laboratory, conception, business strategy
Applying Determination Models for Human Errors in Sequential Analysis of Maritime Accidents
Authors: Tromiadis Ramona , Hanzu-Pazara Radu
Published: November 2013

Human part in the socio-technical system in which they operate in order to achieve the object of work is essential. This system, because of the technological progress is characterized by a high level of technicality, continuing growth in complexity and danger. In this context, the human operator is required to make a substantial effort, which includes besides standard procedure and operations also emergency resolution calling for the ability to make judgments and assumptions based on the knowledge one holds.The main cause of the growing number of accidents has been attributed specifically to "human error". It is generally considered the fact that human factors contribute to accidents. But there are different opinions on the importance of this factor. Suggestions regarding the proportion of marine accidents caused by human errors vary from 50 to 90% of the total number of accidents. Some research considered that 60% of the total number is due to human error as a direct cause and the remaining of 30% human error is from indirect contributory cause. Effects of active cause are usually noticed almost immediately, while consequences of indirect cause may remain invisible in the system for a long time, until in combination with other factors compromise the system and lead to an accident.Different methodologies are developed, adopted from the investigations on risk analysis to performe the models that will determine the human errors in sequential analysis of maritime accidents.According to IMO resolution, human factors which contribute to marine casualties and incidents may be broadly defined as the acts or omissions, intentional or otherwise, which adversely affect the proper functioning of a particular system, or the successful performance of a particular task. Understanding human factors thus requires a study and analysis of the design of the equipment, the interaction of the human operator with the equipment, and the procedures followed by crew and management.Since human factors are triggered by human errors, which are the main source of risk in maritime activities, it seems important to develop different methodologies that allow a quantitative and qualitative analysis of the real incidence of several human factors over maritime accidents with the aim of taking human factors into account in properly developed risk management plans.
Different Methods of Refloating a Ship
Authors: Varsami Anastasia
Published: November 2013

In the shipping industry it is vital for a ships construction to take into consideration any grounding event that might occur, due to the fact that grounding has been representing an important issue in the maritime industry being almost always connected to a catastrophic pollution of the marine environment. Another important matter it is represented by the refloating methods that should be applied on these ships that are grounded, in order to safely take them out of their position with minimum hull damage and no pollution to the marine environment. There is a need for a basic understanding of the geometry, stability and strength of intact ships before trying to refloat a damaged, grounded or sunken ship. When talking about refloating a grounded ship, it is first of all necessary to fully understand the grounded event that led the ship into that position so that the best method for refloating to be applied. It is an important demand to establish the appropriate method of refloating so that the risk of polluting to be reduced at minimum. It is really vital to have a well thought-out and organized salvage plan in order to apply a certain refloating operation. In order to have such a salvage plan it is necessary to investigate properly the ships site and gather the appropriate information. Operational conditions around the ships site, namely the casualty, are dynamic and may change several times throughout the course of the refloating operation and this way many of the refloating operations cannot be applied on that certain cases of grounding. Ships groundings can have devastating effects on the marine environment. Cleaning up after a major grounding event could lead to enormous amounts of money and even then there is no certainty that the cleaning process has the best results or even the wanted ones. The general opinion of the shipping industry is that the cheapest method to refloat a grounded ship is to use the means present onboard that particular ship (means of propulsion, rudder, ballasting/de-ballasting operations, getting rid of weights). In this paper I tried to show how a ship can or cannot use the means present onboard in order to put herself out of the grounding position. In order to do that I have used Transas Navi Trainer 5000 simulator.
Mechanical and Geometrical Characterization of the Conveyors Belts from Mineral Resources Exploitation
Authors: Ianăşi Aurora Cătălina , Mihuţ Nicoleta Maria
Published: November 2013

Conveyor belt is one of the most common types of continuous handling equipment used for moving rocks of various sizes horizontally or inclined. From researches done in the exploitation of mineral resources and rocks and from the Strength of Materials calculations in this paper is observed above the conveyor sizing and other elements of the transporter requires knowing how belt traction forces (tensions thereof) varies on the conveyor length. In all cases the operation of the conveyor belt must be provided without engaging the slip phenomenon and limiting its displacement (between sets of rollers) so conveyor can operating at optimum parameters. The materials that make up a conveyor belt can be divided into two categories: materials for coating plates or outer shell and a resistance part, areas with inserts that can be textile and steel cables. Because the bands are subjected to tensile efforts and wear phenomena we determine the maximum strength they can operate without going into permanent deformation regime. Conveyor belt dimensioning calculations and other elements of a conveyor varies depending on its length and the carrier operating situations. We can see, also, that sizing conveyor belt and other conveyor components require knowledge of how belt traction forces (tensions thereof) varies along the length of the conveyor. The tensions from the conveyor belt will be study for the climb section and for the descend section. It mentions that the specific resistance to motion of the belt on full branch, consisting of resistances due: current material deformation, rotation rollers camps because pressing rubber layer and roll belt and belt bending. Since current material strength due to deformation and bending belt represents a large percentage of total specific resistance to motion, it follows that resistance decreases with decreasing displacement belt between rollers and increase with the effort in belt, respectively. This explains that resistance decreases with increasing length of conveyor (especially when its initial stretch is great), and with increasing conveyor tilt too. Also, we observe, from the values of forces calculated in the paper, that the resistance to rotation of the roller bearings decreases with increasing load on the roll, hence the values adopted for specific resistance to movement can be more larger on the empty branch than on the full. Knowing how to calculate resistances to motion of the belt, you can fix that occur belt efforts through the points made on the contour method, starting point of the drum motor development and ending point of winding it. These movement resistances calculated for empty and full branches are needed to precisely determine the installed power of the conveyor belt.
The Influence of Pile-Pier Reinforcement Ratio on the Development of Plastic Zone of Bridge Structure
Authors: Song Bo , Li Kai Wen , Zhong Min
Published: November 2013

In this paper, using elastic-plastic fiber unit model for a continuous beam bridge structure and foundation to analyses the nonlinear seismic response of pier and pile foundation considering pile-soil interaction and the different types of seismic wave on the pile foundation and the pier dynamic response, focusing on the development of plastic zone and dynamic response of structure under different pile-pier reinforcement ration conditions. The results show that, with the pile pier reinforcement ratio increases, the response plasticity of pile and pier show a different trend; so pile-pier reinforcement ration is an important factor of dynamic characteristics for the bridge pier supported by group piles system; the pier reinforcement ratio not only impact on development of the plastic zone of the pier, but also impact on the pile. In addition, different types of seismic waves on the structure are different, the long-period seismic waves maximum, followed by inland direct seismic waves, plate boundary seismic wave minimum.
Stability Analysis of Scour around Exposed Bridge Pier
Authors: Cheng Min Tai
Published: November 2013

Instability exposed foundation due to scour around bridge pier caused displacement should be noted that erosion and destruction often occurs subsidence of river-bed soil in bearing layer changed place under water pressure bound to tilt the piers of the bridge, which can then produce another phase of secondary displacement, that is, if in the longer term forces such as earthquakes or floods overall resulting short and long term in unstable state. This study applied finite element model Plaxis-2D to analyze exposed foundation on bridge pier scour in 200-year return flood peak flow, involving consolidated with static load, water pressure, structures suffered the wind, driftwood impact, and debris thrust is to assess abutment security in flood erosion according to the alert and action warning.
Bridge Finite Element Model Updating Based on Uniform Design and Response Surface Method
Authors: Wu Zhao Xia , Fan Xue Shuang , Shao Yuan Long , Hu Li Peng
Published: November 2013

An accurate finite element model is a necessity for analyzing the bridge's health status. The uniform design combined with response surface finite element model updating method is proposed in this paper. The error of data obtained from updating model is less than 3% by contrasting static load test data in Shihe Bridge.The result shows that the updating model has a good fit with the actual bridge.
Study on Collapse-Proof Effect and Parametric Design of Cable-Unseating Prevention Devices
Authors: Zhang Yu Min , Qin Xing Xu
Published: November 2013

The collapse-proof effect of unseating prevention devices are influenced by the design parameters under earthquake. Combine with existing relational design standards of unseating prevention devices at home and abroad, the dynamical analysis has been used to get the seismic response of bridges with different parameter cable-unseating prevention devices. The influence of design parameters on the collapse-proof effect and internal force of unseating prevention devices are been analyzed. The result show that the unseating prevention devices can play the role to proof the collapse, and it can enhance the anti-pushing rigidity and integrity of structure. The effect of collapse-proof decrease as the cable length and primary clearance increase, the internal force of unseating prevention devices is larger than the design bearing capacity while the parameters are both smaller, even some has exceed its yield tension.
Vehicle-Bridge Interaction Analysis via ANSYS and MATLAB
Authors: Liu Heng , Xie Wei Ping , Li Lei
Published: November 2013

In order to establish and solve vehicle-bridge interaction matrix equations more easily and able to be applied to any vehicle-bridge interaction problems, a procedure has been programmed based on the ANSYS and MATLAB. Its feasibility and accuracy has been verified via comparing the results of a simple example with another verified procedure programed in the same method based on MATLAB. A study of contrasting moving load model and moving sprung mass model has been done with the former procedure. It indicates that the inertia force of the mass has a low effect on the dynamic response of vehicle and bridge when the vertical roughness of the bridge and damping effect are ignored.
Research on Design Scheme of CWR on Deck of Lhasa River Super-Large Bridge
Authors: Wang Bao Cheng , Han Feng
Published: November 2013

Research on design scheme of CWR on large-span bridge in alpine region when expansion joint of rail is not need with the Qinghai-Tibet railway as the research background. The deformation of beam under temperature change was analyzed through Newton iteration method and Finite-Element Method with the seamless track calculation model of line-bridge-pier integration. Design program of setting buffer was adopted after comparison and selection. Continuously welded rail on bridge satisfied the design requirements when design stress-free temperature of rail take 18±3°C and 18±4°C. This research put forward a new design in order to solve laid seamless line on large-span bridge in large temperature difference.
Analysis and Research about the Influences of the Foundation Pit on the Nearby Water Pipe Bridge
Authors: Hou We Nang , Liu Fei Ying
Published: November 2013

There is a foundation pit of box culverts adjacent to the water pipe bridge of the Dam River in Shenzhen. This text uses large finite element software MIDAS/GTS to do the three-dimensional numerical simulation of pile-earth-supporting anchor, and analyzes the influences on the pipe bridge during the evacuation of the foundation pit with box culverts. This text is on the purpose of providing suggestion for the design and construction of the foundation pit.
Buckling Strength and Parameter Analysis on Stiffened Flange Plate under Compression
Authors: Lu Wen Ru , Di Jin
Published: November 2013

The buckling strength of stiffened flange plate under compression was researched by referring to BS5400, Japanese Specification for Highway Bridges and Eurocode in order to research calculation methods of stiffened flange plate under compression in foreign design codes of steel bridge which were based on different design theories. Test results of ultimate bearing capacity of stiffened flange plate under compression were compared with calculation results according to those codes. The effects of constructive parameters such as the thickness of flange plate, width of subpanel, thickness of plate and width of inclined web plate in rib on buckling strength of stiffened flange plate under compression were researched respectively. The results showed, when increasing the thickness of flange or decreasing the width of plate divided by rib's web, calculation results of buckling strength increased at first and then leveled off according to Japanese Specification for Highway Bridges. However the buckling strength declined slowly according to BS5400 and Eurocode. When increasing the thickness of plate or decreasing the width of inclined web plate of rib, calculation results increased at the beginning and leveled out then. If ribs satisfy the rigidity demands, calculation results of buckling strength would remain the same as the sizes of rib were changed according to Japanese Specification for Highway Bridges.
Response Spectrum Analysis Method of Footbridge Lateral Vibration under Man-Bridge Interaction
Authors: Nan Yu , Song Zhi Gang , Jiao Shi
Published: November 2013

Based on the uniform experimental design method and combining with the additional lateral pedestrian role derived from social force, this paper establishes human-bridge dynamic interaction model and calculates dynamic response of simply supported structures with different span, damping ratio, walking stride frequency and other parameters under the man-bridge dynamic interaction. The acceleration response spectrum is obtained by FFT transform of acceleration response. Then RMS-acceleration response spectrum is calculated in accordance with ISO overall frequency weighting method and the response spectrum envelope formula is fitted by parametric analysis.
Response of Perpetual Pavement under Different Axle Heavy Truck
Authors: Ma Shi Jie , Huang Xiao Ming
Published: November 2013

To investigate suitability of the perpetual pavement under ultra-heavy loads, a test road was constructed on expressway in Shandong province of China. There were five pavement structures include semi-rigid asphalt pavement, each was instrumented with gages for measuring the strains of asphalt base layer, the vertical stress of subgrade, temperature of asphalt layers. The analysis of the strain data indicated that the strain values are affected by the temperature, the vehicle load, axle type, and the pavement structure combination. To research the response of different structure, tested different axle and load at different temperature, then different pavement response models were developed that accounts for layer thickness, axles load, pavement temperature and equivalent modulus of pavement foundation. The models provides good references under heavy vehicle loading and China local climate, it will be useful for perpetual pavement design.
The Application of the Rayleigh Wave in Subgrade Layer Detection
Authors: Ummin Okumura , Qi Yu Jie , Zhao Ji Jun , Jiang Zheng
Published: November 2013

Based on LabVIEW platform, a highway nondestructive detection system was developed to detect highway subgrade layer and strcture characteristic. The integral principle of this system is dispersion characteristics of Rayleigh wave in different medium and the pronounced relationship between propagation velocity of Rayleigh wave and physical-mechanical properties of the medium. Using this test system to conduct a field test on a highway in Henan province and comparing the results with the actual situation, the results validated the practicability and reliability of the system.
Study on Corrosion Resistance of 2205 Stainless Steel Reinforcement in Simulated Concrete Pore Solution
Authors: Chen Long , Qu Yu , Tang Yan Bing , Fang Xiang
Published: November 2013

The steel rebar inside reinforced concrete structures is susceptible to corrosion when the chloride content at the surface of the steel exceeding the critical chloride concentration. Stainless steel reinforcements have proved to be the most reliable methods to assure the durability of reinforced concrete structures in marine environment for the compact passive films forming on its surfaces and higher critical chloride concentration. In the present work, the compactness of passive film on 2205 stainless steel in simulated concrete pore solution (SPS) is compared with carbon steel (Q235). the critical chloride concentration of Q235 and 2205 stainless steel reinforcement are discussed. Results indicate the slope(k) of double-log plot of current time for 2205 stainless steel is higher than Q235 , thekvalue is related with the compactness of passive film, the critical chloride concentration of 2205 stainless steel is much higher than Q235 steel in SPS.
A Study on the Lane Width of Car-Only Urban Underground Road
Authors: Liu Yi , Yu Ming Jian , You Ke Si
Published: November 2013

Theoretical analysis combined with experimental study was conducted to determine the proper lane width for urban car-only underground road. Vehicle trajectory data were collected in the experiment using three different ways including naturalistic driving experiment, video image processing and driving simulation. Lateral offset of each vehicle moving on the lane were obtained to determine the lane width. The results shows that for the car-only underground road, the design vehicle width is 1.8m,considering the safety margin and driving comfort, the minimum lane width 3m and 3.25m are reasonable and safe for the design speed 60km/h and 80km/h respectively.
Research on Geotechnical Regionalization for Highway
Authors: Wang Yu Lan , Li Chao
Published: November 2013

Two level zone index system of the provincial highway geotechnical zone was established on the basis of analysis of the relationship between geotechnical elements and highway engineering. The highway rock-soil type conversion rules and the zone standard of two level zone indexes were set through comparative analysis of the characteristics of rock-soil on the engineering geological map. According to the general principles and methods of zone study, the research framework of provincial highway geotechnical zone was constructed. Under the guidance of this framework, Shandong province highway geotechnical zone was completed and the whole research area was divided into 2 grade I and 5 grade II. The results indicate that the new highway geotechnical zone can better reflect the variation of rock-soil engineering properties in Shandong province. The result verifies the scientificalness and effectiveness of the research framework of provincial highway geotechnical zone and provides basic data for research on highway geotechnical zone of nationwide.
Rutting Deformations Analysis for Asphalt Pavement Base on the Visco-Elastoplastic Theory
Authors: Yang Ping
Published: November 2013

Base on visco-elastoplastic theory, using Laplace transformation the asphalt pavement parameters of viscoelasticity model and visco-elastoplastic model are converted into parameters of prony series, the rutting deformations of asphalt pavement are analyzed by using ANSYS, the influence of load, material temperature and loading cycles are considered. The research shows that with the increase of loading cycles, the rutting deformations of visco-elastoplastic model gradually large than the results of viscoelastic model, both the load and temperature have a influence on the rutting deformations of asphalt pavement.
Construction Ventilation of Tongluoshan Expressway Tunnel
Authors: Zhang Xue Jin , Zhou Chao Yue , Fu Ya Peng , Fang Yong
Published: November 2013

Tongluoshan expressway tunnel passes through coal mined out area. It is an extra-long expressway tunnel with high-gas, so construction ventilation is the key in this project. Combined with the theoretical calculation and the actual situation of Tongluoshan Tunnel, the forced ventilation is taken as the major way of construction ventilation. Based on the calculation of required airflow, gas distribution in work area and calculation of air duct resistance and tunnel resistance, the configuration of fans is optimized, thus the construction ventilation of each section have been determined.
The Rock Slopes Classification Research of Ordinary Roads in Liaoning Province
Authors: Xu Yan , Li Bo , Liu Xiao
Published: November 2013

Rock slopes are always distributed along roads, due to the discreted distribution and small scale, detailed mechanics parameters of the slopes are difficult to obtain. Thus, the existing analysis methods, like Q-system classification, RMR classification, SMR evaluation system, and CSMR method are not suitable for analyzing rock slopes. In this paper, an evaluation model for slope stability classification of ordinary roads in Liaoning province is proposed based on two-level fuzzy comprehensive evaluation. Thirteen genes that belongs to four factors are selected as predictive factors for the evaluation model. Membership is assessed by expert assessment method and the weight value of affecting factors is determined by inverse analysis method in evaluation model. A total number of 129 rock slopes is studied using this model and results are consistent with the experts' in situ evaluation, which proves this method reasonable and practical.