scholarly journals Risk Control Standard and Construction Control Technology of Shield Tunnel Passing through Irregular-Plate Bridge

Symmetry ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 1331
Author(s):  
Yougang Hu ◽  
Ping He
Keyword(s):  
Risk Control ◽  
Shield Tunnel ◽  
Foundation Settlement ◽  
Control Technology ◽  
Ground Settlement ◽  
Subway Tunnel ◽  
Feasible Method ◽  
Key Points ◽  
The Relationship ◽  
Beijing Subway

As a kind of statically-indeterminate point-support structure, the irregular-plate bridge (IPB) is extremely sensitive to the settlement of pier columns, and the stress of the plate is complicated. Because of the limitation of environmental conditions, the newly-built subway circular symmetric shield tunnel needs to pass the pier foundation of the IPB perpendicularly. To control the engineering risks, the pier settlement value must be known, and measures should be taken to reduce the settlement. This paper takes the project of the Beijing subway circular symmetric shield tunnels passing the existing IPB of the Guang’anmen Bridge as an example. First, the stress characteristics and settlement control standards of the IPB are analyzed, and then the technical scheme of synchronous jacking and key points of risk control during the construction of the shield passing the IPB are put forward. The relationship between the excavation face pressure of the shield tunnel and pier foundation settlement, and the ground settlement, are then analyzed. Finally, structural cracking after construction is analyzed, and the analysis shows that synchronous jacking technology can effectively control the settlement value of the subway tunnel passing the IPB. The technology is a feasible method for controlling the safety of a tunnel passing through a sensitive, statically-indeterminate bridge, and this work is a successful experience for similar major risk projects.

Impact of Double-O-Tube Shield Tunnel Construction on Grillage Beams Foundation Frame Building

2011 ◽  
Vol 71-78 ◽  
pp. 32-36 ◽  
Author(s):  
Xin Jiang Wei ◽  
Jie Hong ◽  
Gang Wei
Keyword(s):  
Principal Stress ◽  
Differential Settlement ◽  
Shield Tunnel ◽  
Tunnel Construction ◽  
Foundation Settlement ◽  
Ground Settlement ◽  
Shield Tunneling ◽  
Frame Building ◽  
Shield Machine ◽  
The Impact

Considering the interaction of building-soil-tunnel, the grillage beams foundation frame building vertical crossed by Double-O-Tube (DOT) shield tunnel was simulated by 3D MIDAS/ GTS software, and the impact of construction on the building was analyzed. The results show that: the ground settlement trough caused by DOT shield tunnel can be fitted by peck formula; during the passage of the shield tunneling through the building, the settlement of the building increased and settlement trough was wilder; the settlement was stable and had a little rebound when shield machine already passed the building; with the increase of driving distance, the first principal stress P1 increased and then was stable; with the increase of L, the shape of foundation settlement curve changed, and the maximum differential settlement between columns increased but was small.

The impact of cultural factors on attachment dynamics: a view from Irish society

2019 ◽  
Vol 13 (2) ◽  
pp. 207-223
Author(s):  
Michael O’Toole
Keyword(s):  
Significant Role ◽  
Emotional Development ◽  
Cultural Factors ◽  
Seamus Heaney ◽  
Irish Society ◽  
Irish Context ◽  
Key Points ◽  
The Many ◽  
The Impact ◽  
The Relationship

In this article I examine aspects of the relationship between mothers and sons from an attachment perspective in an Irish context. Through the works of Irish writers such as Seamus Heaney, John McGahern, and Colm Tóibín, I focus on particular aspects of this relationship, which fails to support the developmental processes of separation and individuation in the many men who come to me for psychotherapy. I illustrate key points concerning this attachment dynamic through the use of clinical examples of my work with two men from my practice. While acknowledging that many other cultural factors play a significant role in the emotional development of children, integrating the work of our poets, novelists, and scholars with an attachment perspective

Excessive Belching: a Separate Syndrome or Another Symptom of Functional Dyspepsia?

2020 ◽  
Vol 30 (3) ◽  
pp. 55-60 ◽  
Author(s):  
A. A. Sheptulin ◽  
O. A. Storonova
Keyword(s):  
Functional Dyspepsia ◽  
Functional Gastrointestinal Disorders ◽  
High Resolution Manometry ◽  
Published Evidence ◽  
Key Points ◽  
Dyspeptic Symptoms ◽  
The Relationship ◽  
Rome Iv ◽  
Selection Of ◽  
Optimal Treatment Strategy

Aim of review. Interpretation of published evidence on the relationship between the excessive belching syndrome and functional dyspepsia (FD) and their management in patient care.Key points. According to the Rome IV criteria of functional gastrointestinal disorders (FGID), excessive belching in the absence of other dyspeptic symptoms is to be considered a manifestation of the excessive belching syndrome, which can be of gastric or supragastric nature. Combination of high-resolution manometry and impedancemetry allows an accurate diagnosis of belching and selection of optimal treatment strategy. Belching complicated by other symptoms of dyspepsia is to be considered yet another FD symptom according to the Rome IV criteria of FGID. Prokinetics are recommended to relieve belching in such cases.Conclusion. Understanding the relationship between the excessive belching syndrome and FD requires further research.

Comedy and politics

2011 ◽  
Vol 10 (2) ◽  
pp. 270-286
Author(s):  
Line Joranger
Keyword(s):  
Political Ideas ◽  
Key Points ◽  
Discourses On Livy ◽  
The Relationship

This article analyzes the relationship between two of Machiavelli’s political texts The Prince (1513) and the Discourses on Livy (1512–1517), and his popular comedy The Mandrake Root (La Mandragola) (1515). Through an examination of these works, I will show what influence his political ideas may have had on his comedy and, conversely, how key points in his comedy emerge as central ideas in his political texts. By demonstrating how his texts communicate with each other, I will show how he recycles established concepts and even changes their meaning.

The relationship of safety climate factors, decision making attitude, risk control, and risk estimate in Malaysian radiation facilities

2019 ◽  
Vol 113 ◽  
pp. 180-191 ◽  
Author(s):  
Hazmimi Kasim ◽  
Che Rosmani Che Hassan ◽  
Mahar Diana Hamid ◽  
Sina Davazdah Emami ◽  
Mahmood Danaee
Keyword(s):  
Decision Making ◽  
Safety Climate ◽  
Risk Control ◽  
Risk Estimate ◽  
Climate Factors ◽  
Relationship Of ◽  
The Relationship

scholarly journals An Examination of Relationship between Career Maturity and Multiple Factors by Feature Selection

2020 ◽  
Author(s):  
Shuxing Zhang ◽  
Qinneng Xu
Keyword(s):  
Feature Selection ◽  
Career Maturity ◽  
Selection Methods ◽  
School Students ◽  
Feasible Method ◽  
Multiple Factors ◽  
Sample Data ◽  
Forward Stepwise ◽  
The Relationship ◽  
Significant Factors

The purpose of this study is to investigate the relationship between career maturity and a branch of factors among senior school students. The sample data were collected from a total of 189 students. The linear relationship between career maturity and 72 factors were tested by using feature selection methods. LASSO and forward stepwise were compared based on crossvalidation. The results showed that LASSO was a feasible method to select the significant factors, and 12 of the total 72 factors were found to be important in predicting career maturity.

scholarly journals Study on construction risk and control technology of subway tunnel in soft soil stratum

2021 ◽  
Vol 634 (1) ◽  
pp. 012116
Author(s):  
Heng Kong ◽  
Fei Guo ◽  
Mi Zhang ◽  
Shenglei Gao ◽  
Kaili Wang
Keyword(s):  
Soft Soil ◽  
Control Technology ◽  
Subway Tunnel ◽  
Soil Stratum ◽  
Construction Risk ◽  
And Control

Questioning Thresholds Between Natural-Unnatural

2022 ◽  
pp. 107-136
Author(s):  
S. Banu Garip ◽  
Ervin Garip
Keyword(s):  
Urban Design ◽  
Design Strategies ◽  
Theoretical Perspectives ◽  
Key Points ◽  
Design Projects ◽  
The Relationship

This chapter discusses the relationship between natural and unnatural in the framework of urban design strategies for sustainability. A descriptive reading is presented through theoretical perspectives and examples of application approaches. The authors' proposals for different cities in Turkey as urban design projects which deal with different problems and potentials in scope of the relations between natural-unnatural are presented. The thresholds and balances between natural-unnatural and urban design strategies for sustainability are discussed within the content of the projects. The key points are elucidated through mentioned examples which are focusing on design approaches, relations, scenarios, and principles.

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