An Idea of T-Shaped Integer Cantilevered Road

2011 ◽  
Vol 255-260 ◽  
pp. 4051-4055
Author(s):  
Zhi Xiang Zhou ◽  
Liang Fan
Keyword(s):  
Design Principle ◽  
Engineering Application ◽  
Environmental Benefits ◽  
New Method ◽  
Mountainous Areas ◽  
Construction Technique ◽  
The Road ◽  
Safe Side ◽  
Cut And Fill

A new method of widening mountainous highway with T-shaped Integer Cantilevered Road was proposed for steep mountainous areas. Its design principle is casting an integral wall upon the exiting stable roadbed to widen the road without considerable cut and fill. Then the construction technique and work principle were introduced, and the technical, economic and environmental benefits were discussed. Engineering application shows that this method is not only simple, economical, and on the safe side in construction, but also protecting environment further compared with the existing techniques.

scholarly journals Research on Construction Techniques of Hanging Basket in the Bridge Project

2015 ◽  
Vol 2 ◽  
pp. 35
Author(s):  
Junzhuang Wang
Keyword(s):  
Design Principle ◽  
Road Traffic ◽  
Traffic Network ◽  
Site Management ◽  
Bridge Construction ◽  
Construction Technique ◽  
Maximum Extent ◽  
The Road ◽  
Construction Techniques

<p>Under the background of increasingly expanded road traffic network in China, it is highly necessary to construct bridges. Upgrading the bridge construction technique can upgrade the road quality to the maximum extent. In order to upgrade the construction technique, this article elaborates on the construction techniques of hanging basket in four aspects: definition and design principle of hanging basket; key application points of construction techniques of hanging basket in the bridge project; frequent quality accidents and preventive and curative measures of hanging basket; on-site management of hanging basket and upgrading of safety.</p>

Pedestrian network information extraction based on VGI

GEOMATICA ◽  
2018 ◽  
Vol 72 (3) ◽  
pp. 85-99 ◽  
Author(s):  
Xuejing Xie ◽  
Guojian Ou
Keyword(s):  
Information Extraction ◽  
Road Network ◽  
New Method ◽  
Location Based Service ◽  
Network Information ◽  
The Road ◽  
Pedestrian Network ◽  
Gps Trajectories ◽  
Data Extracting

Pedestrian network information plays an important role in pedestrian location based service (LBS), and its completeness determines the quality of a pedestrian LBS. This study used volunteered data and BaiduMap to research how to extract pedestrian network information on the basis of pedestrian GPS trajectories. The method extracts human road information by three steps: cleaning track data, extracting the road network, and detecting and analysing the recognised pedestrian road facilities. Once the road network information is extracted, the information regarding road facilities can be obtained, e.g., pedestrian crossings, overpasses, and underground passages. This paper describes a new method for incrementally updating electronic maps.

scholarly journals Examining the Walking Accessibility, Willingness, and Travel Conditions of Residents in Saudi Cities

2019 ◽  
Vol 16 (4) ◽  
pp. 545 ◽  
Author(s):  
Muhammad Rahman ◽  
Kh. Nahiduzzaman
Keyword(s):  
Traffic Congestion ◽  
Urban Expansion ◽  
Environmental Benefits ◽  
Health Conditions ◽  
Future Studies ◽  
The Road ◽  
The Past ◽  
Climate And Health ◽  
Hot Weather ◽  
Community Facilities

Rapid urban expansion and population growth in Saudi cities over the past four decades have increased vehicular accidents and traffic congestion and have impacted the daily walking conditions of the residents. Walking has various health and environmental benefits. In North American and European countries, three factors have been found to motivate a resident to walk within their community: their accessibility to community social and business facilities, their perception and willingness, and the safety conditions of the roads and sidewalks within their community for walking. This study examined these factors and their role in the walking habits of the residents in the neighborhoods of Doha and Dana districts in Saudi Arabia’s eastern city of Dhahran. Data were collected through field observations and by randomly sampling and interviewing 200 residents. Geographic Information Systems (GIS) and SPSS statistical software were used for data analysis. The results show that most of the community facilities are randomly placed in the districts. Mosques are the closest facility to each resident with an average accessibility distance of 242m. Almost 43% of the respondents prefer daily walking while the rest are hesitant due to hot weather during summer and narrow and poorly designed sidewalks. The sidewalks were also found to be blocked by trees, street signals, and illegally parked vehicles. Future studies should explore the accessibility to facilities, willingness, climate, and health conditions of the residents, and the road and sidewalk conditions for walking in other cities of the Kingdom.

scholarly journals Forest road erosion

2012 ◽  
Vol 51 (No. 1) ◽  
pp. 37-46 ◽  
Author(s):  
J. Dobiáš
Keyword(s):  
Road Network ◽  
Mechanical Damage ◽  
Mountainous Areas ◽  
Water Stream ◽  
Forest Road ◽  
The Road ◽  
Water Flows ◽  
Tangential Stresses ◽  
Precipitation Water ◽  
Forest Lands

The forest road network influences surface runoff of uninfiltrated precipitation water on forest lands, mainly in hilly and mountainous areas. This water flows onto the road crown in unpaved forest roads that do not have any ditches. Dragging of extracted logs causes mechanical damage to the crown of unpaved forest road, and tracks after tractor wheels and furrows after dragged logs originate. Flowing water is accumulated in these depressions and the water stream causes erosion. The method for evaluation of conditions for the origination and degree of this erosion damage consists in the calculation of tangential stresses near the bottom at various depths of water and various gradients of road. Limit gradients of road for the origination of greater or smaller damage by erosion for the subsoil grain of various sizes are determined by a comparison of calculated tangential stresses with critical tangential stresses. Rates of discharge were calculated for the particular models of damage.

Effect of Microwave Drying on Dyeing Rate of Cotton Yarn

2011 ◽  
Vol 328-330 ◽  
pp. 1619-1622 ◽  
Author(s):  
Zi Na Zhu ◽  
Zhuo Meng ◽  
Guang Chao An ◽  
Yi Ze Sun
Keyword(s):  
Liquid Ammonia ◽  
Engineering Application ◽  
Experimental System ◽  
New Method ◽  
Microwave Drying ◽  
Good Effect ◽  
Cotton Yarn ◽  
Steam Drying ◽  
Dyeing Rate ◽  
Better Than

Focusing on the residual amount of liquid ammonia in modified cotton yarn, this paper presents a new method of drying the liquid ammonia by microwave. An experimental system is designed to find whether this new method is correct and to analyse the effect of microwave drying on the dyeing rate of cutton yarn. Firstly, the microwave drying experiment is carried out to prove that this new drying method is better than the traditional steam drying way. Then, another contrast experiment on the dyeing rate confirms the good effect of microwave drying. So it is concluded that microwave drying is an efficient and energy-saving way to remove the remaining liquid ammonia. Meanwhile, the experimental results provide the relevant data to make guiding sense to engineering application.

Research of the Chamfer Millers for the Gears

2011 ◽  
Vol 179-180 ◽  
pp. 960-966
Author(s):  
Hu Ran Liu
Keyword(s):  
Machine Tool ◽  
Product Quality ◽  
Tool Life ◽  
Calculation Method ◽  
Design Principle ◽  
New Method ◽  
Milling Machine ◽  
Batch Production ◽  
Machining Quality ◽  
The Past

In order to improve productivity and product quality and reduce cost, over the past many years, producers made great efforts to find the new method of chamfering. One of the methods is the chamfer milling cutter, on the milling machine tool. This method is suited for medium and small batch production. The tool life is long, the machining quality is stable. In this thesis, the principle of meshing between gear and the rake is applied. The chamfer miller design principle and calculation method is put forward.

A Structure-Based Approach to Measuring Adaptability of Product Design

2008 ◽  
Author(s):  
X. Y. Shao ◽  
Q. Cheng ◽  
G. J. Zhang ◽  
P. G. Li ◽  
P. H. Gu
Keyword(s):  
Product Design ◽  
Personal Computer ◽  
Quantitative Measurement ◽  
Environmental Benefits ◽  
New Method ◽  
Design Reuse ◽  
Functional Modules ◽  
Innovative Design ◽  
Adaptable Design ◽  
Two Indices

Adaptable design aims to extend the utilities of designs and products. Adaptability is classified into product and design adaptabilities. Product adaptability indicates that functionality and life can be extended for both economical and environmental benefits. Design adaptability improves design reuse by using existing designs to develop new designs more efficiently. To evaluate adaptable design, it is necessary to develop a method for quantitative measurement of the adaptability of products. A new method has been developed that first analyzes the independencies of functions and functional modules and then evaluates the adaptability of interfaces with two indices, as well as the performances of adaptive requirements. The effectiveness of the proposed method is demonstrated by an illustrative example of personal computer motherboards. The results show that the method can evaluate and reveal product adaptability for improving design and providing innovative design.

Application of High Pressure Jet Grouting Pile with Undrained Open Caisson Combined Construction Technology in the Protection of Yangtze River Levee

2013 ◽  
Vol 368-370 ◽  
pp. 1443-1449
Author(s):  
Jun Yang Wei ◽  
Bao Tian Wang ◽  
Jing Hua Zhang ◽  
Bin Zhou
Keyword(s):  
High Pressure ◽  
Yangtze River ◽  
Engineering Application ◽  
Construction Technology ◽  
Deep Foundation ◽  
Effective Protection ◽  
Foundation Pit ◽  
Construction Technique ◽  
Deep Foundation Pit ◽  
Jet Grouting

It is easy to cause Yangtze River embankment soil slip or even collapse to have a deep foundation pit construction adjacent to Yangtze River outside embankment，with lots of risk . A new combined construction technique for large caisson is presented. The construction technology, the earthwork excavation of deep high pressure jet grouting pile combined with undrained open caisson construction technology, with data monitoring for the open caisson excavation control is adopted. This study mainly summarizes the advantages of deep high pressure jet grouting pile combined with undrained caisson combined construction technology engineering application, and describes the process of the combined construction and measures of deviation correction.The new combining construction technique has made a relatively effective protection for the Yangtze River levee and its ecological environment,having great engineering application value to some similar engineering.

scholarly journals Development of the Modularity Measure for Assembly Process Structures

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Vladimir Modrak ◽  
Zuzana Soltysova
Keyword(s):  
System Design ◽  
Design Principle ◽  
Singular Value ◽  
New Method ◽  
Assembly Process ◽  
System Property ◽  
In Series ◽  
Modularity Index

This study is aimed at exploring the problem of quantification of process modularity degree. Modularity as a system design principle is apprehended here as the extent to which processes can be decomposed into modules to be executed in parallel and/or in series. For this purpose, a new method is proposed to measure relative modularity of different assembly process structures. This method is compared with other relative modularity measures, namely singular value modularity index, degree of process module, and process module independence, in order to verify its effectiveness. For this purpose, selected representative types of assembly process structures are used. This testing proved that the proposed relative modularity indicator for manufacturing and/or assembly process structures reflects the expected system property in adequate way.

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