To ensure the safety of excavations such as large section tunnels Guangxi Liubin Highway Tunnel Project, we implemented a simulation analysis 3D tunnel models based on finite software for different construction methods. Different from traditional simulation, this paper uses various methods to compare, study, and analyze advantages disadvantages excavation by combining them with excavation. The ...

Abstract Sustainability in construction of tunnel is very important to reduce environmental impact and also minimal use earth resources. Therefore, numerical modelling proposing at design stage achieved this objective. To evaluate the changes soil settlements during excavation, empirical, analytical, methods have been frequently applied movement research method effective anticipating possible u...

Non-destructive test methods are often used in tunnel construction to check the required lining thicknesses. Hereby, mostly ground penetrating radar, impact-echo and ultrasonic echo are applied. However, the current knowledge and experience is largely limited to testing the concrete thickness of double-shell tunnels. Problems with the application of non-destructive test methods can arise, when ...

Purpose As every construction project is quite different according to the type of construction, 3D-representations on design, estimation, construction, and management also need to be different. While the 3D-approach has been widely applied to building projects, it has rarely been tested on large construction projects such as tunnels, mass transit systems, dams, highways, etc. Meanwhile, charact...

Feeder is one of the airships of the Multibody Advanced Airship for Transport (MAAT) system, under development within the EU FP7 project. MAAT is based on a modular concept composed of two different parts that have the possibility to join; respectively they are the so-called Cruiser and Feeder, designed on the lighter than air principle. Feeder, also named ATEN (Airship Transport Elevator Netwo...

This paper presents a systemic Bayesian network (BN) based approach for dynamic risk assessment for adjacent buildings in tunnel construction. This approach consists of four steps in detail, namely, hazard analysis, BN learning and BN-based risk analysis. In the dynamic risk analysis framework, the predictive, sensitivity and diagnostic analysis techniques in the Bayesian inference are used to ...

The study of the aerodynamics related to the improvement in the acting of airplanes and automobiles with the objective of being reduced the effect of the attrition of the air on structures, providing larger speeds and smaller consumption of fuel. The application of the knowledge of the aerodynamics not more limits to the aeronautical and automobile industries. Therefore, this research aims to d...

Prevention is of paramount importance in tunnel engineering, especially operation tunnel. In this study, the deformation data Suzhou Metro Line 1 are used to evaluate health shield during operation. Firstly, relationship between effective ratio bending rigidity and analyzed, results show that has a negative power with deformation, conversion from realized corresponding risk classification crite...

The YL Tunnel of the Chongqing–Kunming high-speed railway project, a key project whole line, is typical ultra-long deep tunnel facing geologic problems, such as rock bursts, large deformation, water inrush, and toxic or harmful gas leakage, among which high ground stress results in most serious damage. This study incorporates existing studies materials, well data on obtained through tests using...

In the process of tunnel construction, water inrush disaster is one main engineering geological disasters. karst strata, different types water-bearing structures or bodies develop and occur in soluble rock layer, excavation easily forms new drainage channels, resulting tunnel. Based on project Huali Highway Banyanzi Tunnel, this paper studies characteristics, mechanism, treatment measures Accor...