Study on Enclosure Structure and Dewatering Plan for Open Cut Tunnel in the Connection Line between Line 1 and Line 3 of Chengdu Subway

2014 ◽  
Vol 501-504 ◽  
pp. 1715-1719
Author(s):  
Xiao Jun Zhou ◽  
Jian Guo Liu ◽  
Lu Lu Mao
Keyword(s):  
Hydrogeological Condition ◽  
Foundation Pit ◽  
Surrounding Environment ◽  
Slope Excavation ◽  
Cut Method ◽  
The World ◽  
Connection Line ◽  
Bored Piles ◽  
The Stability ◽  
Subway Tunnels

On the basis of surrounding environment, including ground geological and hydrogeological condition of a connection line between line 1 and line 3 in Chengdu subway, open cut method is used to build the connection line. The whole line is divided into three sections, shotcrete and bolt support is adopted to maintain the stability of foundation pit by slope excavation, well rotary bored piles are used to support other foundation pit of the connection line. Meanwhile, the designed parameters of dewatering well points for the open cut tunnel are discussed and the anti-buoyancy ability of open cut tunnel is also analyzed in the paper. The purpose of this paper is to lead the design of open cut tunnels in Chengdu cities, including such similar subway tunnels in other cities in the world.

Assessment of Vibrations Generated by Structure Demolition Part I: Influences on Surrounding Environment

2011 ◽  
Vol 243-249 ◽  
pp. 5325-5328
Author(s):  
Zhi Yi Chen ◽  
Hai Tao Yu ◽  
Yong Yuan
Keyword(s):  
Large Scale ◽  
Evaluation Method ◽  
Control Measures ◽  
Ground Vibrations ◽  
Foundation Pit ◽  
Railway Traffic ◽  
Surrounding Environment ◽  
Line Transfer ◽  
The Stability ◽  
Bracing System

A triangular transfer hall is planned be built to distribute passenger flow rationally and improve multi-line transfer capability in the city of Shanghai, China. A large-scale reinforced-concrete bracing system, which is established to ensure the stability of the foundation pit, will be demolished with the completion of foundation pit. The influences of construction vibration on the surrounding environment are concerned. An evaluation method, which is generally applied to the ground vibrations caused by operation of machines, road and railway traffic, and construction activities such as piling and blasting, is then extended to assess the ground vibrations generated by structure demolition. It is found that the ground vibrations generated by demolition construction will affect the environment and human activities if without any vibration control measures.

Design of Enclosure for Subway Station Foundation Pit in Southward Extension Line of Chengdu Metro Line One

2013 ◽  
Vol 671-674 ◽  
pp. 1122-1125 ◽  
Author(s):  
Xiao Jun Zhou ◽  
Jing He Wang ◽  
Hong Yun Hu
Keyword(s):  
Cross Sections ◽  
Subway Station ◽  
Foundation Pit ◽  
Construction Technique ◽  
Soil Nails ◽  
Bored Piles ◽  
Steel Cables ◽  
The Stability ◽  
Southward Extension ◽  
Safety And Stability

This paper summarizes the design of open-cut subway station in Chengdu Metro line one. The station is built by cut and cover method and divided into three special parts with four different cross-sections used for main line and transfer track. Such retaining techniques as bored piles, steel pipe struts, soil nails, rock-bolts, steel-meshes, shotcrete and anchored steel cables are comprehensively used to maintain the stability of foundation pit. The anti-buoyancy coefficient of the open cut station is also derived and attains the requirement of safety and stability for the foundation pit after the utilization of these enclosure measures. The application of the design and construction technique for the subway station may provide guidance for the building of analogous subway station under similar geological and hydrogeological conditions in Chengdu.

System Stability of Bored Piles with Steel Supports for Deep Foundation Pits in Sandy Pebble Stratum

2020 ◽  
Vol 14 ◽  
Author(s):  
Xuansheng Cheng ◽  
Junliang Hong ◽  
Qingchun Xia ◽  
Haibo Liu ◽  
Fei Gao ◽  
...  
Keyword(s):  
Stability Analysis ◽  
System Stability ◽  
Deep Foundation ◽  
Foundation Pit ◽  
Deep Foundation Pit ◽  
Analysis Theory ◽  
Overall Stability ◽  
Overturning Stability ◽  
Bored Piles ◽  
The Stability

Background: At present, there is few researches on the stability of the supporting structure of bored piles with steel supports for deep foundation pits, and it is even less common to use this support method for deep foundation pits in sandy pebble stratum. This paper studied the stability of the deep foundation pit support of the Southwest Jiaotong University Station in Chengdu, China, using the stability analysis theory of bored piles with steel supports for deep foundation pits Objective: The study aims to show the stability of steel supports for deep foundation pits Methods: The overall stability, anti-overturning stability and uplift stability of the foundation pit are important components of the stability analysis of bored piles with steel supports for deep foundation pits. Aiming at the designed method and parameters of the bored piles with steel support for the deep foundation pit, an in-depth theoretical analysis and calculation of the overall stability, anti-overturning stability and uplift stability of the deep foundation pit is conducted respectively Results: The results show that the stability of the deep foundation pit using bored piles with steel support meets the requirements, meaning the design of this support form is safe and reasonable, thus ensuring the smooth progress of the project. Conclusion: The stability analysis of deep foundation pits in sandy pebble stratum provides ideas for the optimization of deep foundation pits and a reference for the stability analysis of deep foundation pits in sandy pebble stratum and other types of stratum.

Unveiling the Theoretical Mistakes in the World Bank Formation and its Implication on Survival of Africa Monetary Union

2019 ◽  
Vol 10 (1) ◽  
pp. 119-124
Author(s):  
Olatunji Abdul Shobande ◽  
Kingsley Chinonso Mark
Keyword(s):  
World Bank ◽  
Monetary Union ◽  
Political Interest ◽  
World Bank Group ◽  
Policy Makers ◽  
The World Bank ◽  
The World ◽  
Bank Group ◽  
The Stability ◽  
Developed Nations

Abstract The quest for urgent solution to resolve the world liquidity problem has continued to generate enthusiastic debates among political economists, policy makers and the academia. The argument has focused on whether the World Bank Group was established to enhance the stability of international financial system or meant to enrich the developed nations. This study argues that the existing political interest of the World Bank Group in Africa may serve as lesson learned to other ambitious African Monetary Union.

Four Conceptions of Authority in International Relations

2021 ◽  
pp. 1-25
Author(s):  
Jorg Kustermans ◽  
Rikkert Horemans
Keyword(s):  
International Relations ◽  
Emotional Experience ◽  
Political Actors ◽  
International Authority ◽  
The World ◽  
Authority Relations ◽  
The Stability

Abstract There is increasing agreement that states and other political actors on the world stage sometimes achieve international authority. However, there is less agreement about the nature and functioning of international authority relations. What determines whether an actor will be recognized as an authoritative actor? And what are the effects thereof? In this essay, we identify four distinct conceptions of authority in the study of international relations: authority as contract, authority as domination, authority as impression, and authority as consecration. Consideration of the typology leads to two important insights. First, the phenomenon of authority has an essentially experiential dimension. Subordinate actors’ emotional experience of authority determines their response to authority and thus also has a fundamental impact on the stability of authority. Second, the emergence of forms of international authority does not entail, at least not necessarily, the weakening of the sovereignty of states, but can equally be argued to strengthen it.

scholarly journals Effects of Maximal Sodium and Potassium Conductance on the Stability of Hodgkin-Huxley Model

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Yue Zhang ◽  
Kuanquan Wang ◽  
Yongfeng Yuan ◽  
Dong Sui ◽  
Henggui Zhang
Keyword(s):  
Experimental Data ◽  
Mathematical Method ◽  
Bifurcation Point ◽  
Potassium Conductance ◽  
Maximal Conductance ◽  
Computing Model ◽  
The World ◽  
Stability And Bifurcations ◽  
The Stability ◽  
Sodium And Potassium

Hodgkin-Huxley (HH) equation is the first cell computing model in the world and pioneered the use of model to study electrophysiological problems. The model consists of four differential equations which are based on the experimental data of ion channels. Maximal conductance is an important characteristic of different channels. In this study, mathematical method is used to investigate the importance of maximal sodium conductanceg-Naand maximal potassium conductanceg-K. Applying stability theory, and takingg-Naandg-Kas variables, we analyze the stability and bifurcations of the model. Bifurcations are found when the variables change, and bifurcation points and boundary are also calculated. There is only one bifurcation point wheng-Nais the variable, while there are two points wheng-Kis variable. The (g-Na,  g-K) plane is partitioned into two regions and the upper bifurcation boundary is similar to a line when bothg-Naandg-Kare variables. Numerical simulations illustrate the validity of the analysis. The results obtained could be helpful in studying relevant diseases caused by maximal conductance anomaly.

Foreign exchange earnings of the countries of the world from international trade in fruit and berry products

2021 ◽  
pp. 45-56
Author(s):  
Rafail R. Mukhametzyanov ◽  
◽  
Nikolay G. Platonovskiy ◽  
Akhmed M. Khezhev ◽  
Tatiyana V. Ostapchuk ◽  
...  
Keyword(s):  
International Trade ◽  
Foreign Exchange ◽  
Import Substitution ◽  
World Order ◽  
Climatic Conditions ◽  
The European Union ◽  
The World ◽  
Increasing Demand ◽  
Processed Products ◽  
The Stability

In the context of the modern global financial world order, an important element of the stability of the national monetary unit of the overwhelming majority of countries in the world, especially developing countries, is foreign exchange earnings. For some countries with favorable natural and climatic conditions, the production, processing and export of agricultural products plays a significant role in the overall structure of foreign exchange earnings in the country. The constantly increasing demand from consumers for fruits, berries, nuts and their processed products allows economic entities of national fruit and berry subcomplexes to increase the volume of growing and exporting these types of products. This study analyzes the change in the volume of exports and imports of fruit and berry products in value terms for the period 2010-2019. It is revealed that some states, being the largest exporters of fruits, berries, nuts and products of their processing, occupy significant positions in the import of these types of products from abroad. Based on the author’s calculations, the top 30 countries of the world have been compiled in terms of net foreign exchange earnings from international trade in this type of product. According to this indicator, the first line with a level of $ 7.506 billion was occupied by Spain, while it increased it by $ 1.675 billion over 10 years. As for Russia, despite the counter-sanctions against the countries of the European Union and some other countries of the world, as well as the ongoing policy of import substitution, including in domestic gardening, it continues to be one of the main importers of fruits, berries, nuts and their processing products in the world. Thus, our country supports both foreign producers and other commercial structures that carry out the processes of commodity circulation of fruit and berry products, and the receipt of foreign exchange earnings in these powers.

Consumer Behavior Changes Post Pandemic Covid-19

2020 ◽  
Vol 2 (2) ◽  
pp. 84-89
Author(s):  
Tati Maryati
Keyword(s):  
Consumer Behavior ◽  
Eating Habits ◽  
Supply And Demand ◽  
Health Economy ◽  
Behavior Changes ◽  
The World ◽  
The Stability ◽  
The Many ◽  
New Consumer ◽  
At Home

The Corona virus or Covid-19 which is unexpected will come to us, has an impact on health, economy and also humanity throughout the world and is able to fundamentally change the world. Supplements are disrupted because production is stopped, retail stores close, causing consumers to change their behavior, which had previously gone offline shopping. Not just shopping, when a pandemic, the way of thinking becomes different. Consumers around the world are looking for products and brands through new ways and new habits are formed. Online transactions focus more on basic products to make ends meet. The fact that Covid-19's anti-virus has not been found raises concerns about disrupted health and the Government's regulation to work and stay at home also raises concerns about disrupted businesses. Differences from habits and interests or preferences that are different for each person, provide different responses to the problems faced and solutions for the future. The habit of shopping offline has a tendency to continue for complementary products while food products are more directed towards offline. The rest eating habits at home can be continued because it provides more hygiene guarantees. The new habit of holding online meetings with distant relatives or colleagues will be increasingly considered given the many more positive things that can be obtained. Likewise with work problems, working from home is more interesting to consider because it is more efficient and effective and the results can be more productive. This new consumer behavior is adjusted to provide satisfaction for many parties, with the assistance of institutions or governments that oversee the security of supply and demand and maintain the stability of both. 

scholarly journals Educative Values of Peace Mind Mysticism of Sunan Bonang In the view of Islam

2020 ◽  
Vol 1 (2) ◽  
pp. 134-150
Author(s):  
Fatchullah Zarkasi
Keyword(s):  
Empirical Evidence ◽  
Islamic Education ◽  
Concrete Object ◽  
Surrounding Environment ◽  
The World ◽  
Education Process

The majority of Javanese which many called "abangan" has its own perspective on the major religions in the world. For Niels Mulder in his book, the Javanese tend to view Islam as a religion is Arab, so that Islam seemed to fizzle placed as the basis of life for the Javanese belief. However, virtually no Muslims in Indonesia who have never heard the name Wali Songo, collective unit 9 guardian. Sunan Kalijaga better known than all eight other guardians with various famous work. Puppet world is said to be the work of these guardians, as sekaten, which has been called, is a tradition of the Prophet's birth day celebration that is celebrated officially the Kingdom of Yogyakarta and Surakarta, until today. Sidi Gazalbarevealed that: "Value is something that is abstract. Value is not a concrete object, not a fact, not just a question of right and wrong that demands empirical evidence, but rather a matter of appreciation that is desired, liked and disliked.While Educative education comes from the word that means pendidikan.Sedangkan education question in this case is the Islamic education. So according to Prof. Dr. Omar M. Taomy al Pendidikaan Syaibany in his philosophy of Islam, it can be concluded that: "Islamic Education is an attempt to change the behavior of individuals in the life of their community and also in the surrounding environment through the education process. The changes are based on the values of Islam.”

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