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List of products by author: Y. Yuan
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3D Seismic Response Analysis of a Metro-station with Atrium in Soft Soils
Abstract: A novel metro station, in the city of Shanghai, is firstly designed and constructed in soft soils. The station is composed of two different structure sections, i.e. a 2-storey and 3-span structure, and a large opening structure. A full 3D soil-structure FE model is established to analyze dynamic responses of the metro station subjected to different seismic input waves. Results indicate that...
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A comparative study of mountain tunnel subjected to seismic load using 2D and 3D numerical simulations
Abstract: In the 2008 Wenchuan earthquake, more than ten mountain tunnels in operation around the epicenter suffered severe damages. Among all the damaged tunnels, the Longxi tunnel was the most special one which is located at a distance of 2 km from the epicenter of the earthquake. For the seismic design of tunnel structure, an effective simplified approach, two-dimensional finite element model is...
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A new concept for seismic mitigation method in immersion joint
Abstract: Under earthquake loading, the immersion joint, regarded as both weak and vital part as well as the sensitive part to deformation in immersed tunnels, could be likely damaged and no solutions about earthquake reduction of it can be found so far. With the rapid development of ultralong immersed tunnels, i.e. the Hong Kong Zhuhai Macao link immersed tunnel, this problem needs to be paid increasing...
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A Performance-Based Structural Fire-Resistance Design System for Underground Public Structure
Abstract: The fire-resistance design of underground structures is different from ground structure for they are different in aspects of material, structure, load, fire scenario and so on. But, at present, the fire-resistance design of underground structure is mainly conducted taking standards of ground structure as reference, which cannot fulfill the requirements of fire resistance of underground...
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An automated and rapid measuring method for cross-section deformation of shield tunnels
Abstract: Due to the high cost and continuously aging deterioration, the inspection and maintenance of structures have become increasingly important in the tunneling field over the past decades [1]. Shield tunnel consists of precast concrete segments that form rings by the connection of steel bolts. Unlike tunnel constructed by cast-on-site concrete linings, the rigidity of shield tunnel is relatively...
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Evaluation of Transverse Seismic Calculation Methods for a Circular Tunnel in Soft Soil
Abstract: Tunnel has been applied widely in the world's major underground transportation engineering. In recent years, earthquake disasters frequently occurred in whole world, such as Kobe earthquake in Japan in 1995 and Wenchuan earthquake in China in 2008, caused damage to underground structure facility. Therefore, seismologists around the world pay attention to seismic studies of underground...
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Experimental Investigation on the Flexural Mechanical Behaviour of an Immersion Joint
Abstract: The immersed tunnelling technique (Figure 1) is widely used for river or sea crossings. An immersed tunnel consists of precast tunnel elements. The immersion joints, which are connecting tunnel elements, are the weakest units of the whole tunnel (C. Ingerslev, 2010, J. Baber et al., 2011). According to the stiffness ratio of the joint to the element, immersion joints can be divided into three...
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Hybrid Simulation of the Seismic Performance in A Typical Subway Station
Abstract: Hybrid simulation is an advanced structural seismic experimental method that combines experimental physical models with analytical numerical models; its versatility and capability of simulating seismic response of full-scale specimens make it particularly applicable to general civil structural systems. Experimental physical models test the highly nonlinear model parts of the structure and...
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Longitudinal Rigidity of Shield Tunnels Based on Numerical Investigation
Abstract: In recent years, shield tunnelling method has been widely used in world’s underground transportation engineering due to its high mechanization and mature technology. However, according to past researches, slender structures as shield tunnels are particularly sensitive to differential settlement of foundation, which may lead to large opening of the segment joints and consequently complete...
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Multi-shaking-table Test of a Long Immersed Tunnel
Abstract: Shaking table, which was developed for structural engineering, was also applied to pile foundation in geotechnical engineering ( Meymand, 1998). Yang et.al (2004) applied structural shaking table to test the seismic behaviour of metro tunnel. It was believed that long tunnel would suffer from more
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Simulation and analysis on fire scenario for subway station
Abstract: With the development of urban underground space, fire prevention and fire resistance design for underground constructions is getting widespread attention. Subway stations are a great part of underground constructions for which the fire resistance design has already been paid attention to. While exposed to a fire, the station structures, the components inside the platform layer, the station hall...
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Statistical Evaluation of Buildings Disturbed from Metro Shield Tunnelling in Soft Soil
Abstract: Residential buildings in downtown would suffer disturbance from tunnelling, even with the help of shield machine. Tunnelling in soft soil induces subsidence of ground above metro tunnels, resulting in structural damage of buildings. In the presented study, relevance between field monitoring data of buildings and tunnelling parameters is investigated. The collected data of buildings includes...
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The Influence of Layered Soil on Dynamic Analysis of Underground Structure
Abstract: Statistically speaking, underground structures experienced a lower rate of damage than surface structures. Nevertheless, in the wake of vast construction of underground facility, i.e. subways, underground emporiums and pipelines, some underground structures have experienced serious damage during recent large earthquakes. Consequently, varies of methods for seismic design and analysis of...
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Uneven settlement induced by a curved shielding tube
Abstract: Settlement induced by a curved tube is different from that in straight tube case. The field test on a metro project in Malaysia has been conducted,which contains several curve portions. Five observation sections at varing alignment radius are arranged.The in-site surface settlements on those sections are well fitted by two separate Peck formulas with the tube centerline as the axis.And the...
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