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List of products by author: W. Broere
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A new method for structural health evaluation of shield tunnel
Abstract: In bored tunnel design, most recent structural design models for tunnel linings concentrate on the behaviour of the tunnel lining in the long-term. The load on the tunnel lining in these models is derived from the original soil stresses, often simplified for a single homogeneous layer. Field observations show that higher loads may occur in the initial hours after the assembly, that might effect...
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Applying distributed optic fiber sensor for tunnel monitoring
Abstract: Structural health monitoring has become an important aspect in tunnel engineering due to the increased need for maintenance for aging tunnels. Various types of sensors have been employed to monitor the behaviour of tunnels during their service phase. Distributed optic fiber sensor (DOFS) is a new type of sensing technology which has been used recently for structural monitoring. This sensor...
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Energy Efficient EPB Design Applying Machine Learning Techniques
Abstract: A significant part of the energy consumed during the tunnelling process of Earth Pressure Balanced (EPB) Tunnel Boring Machines (TBMs) is related to the main drive, consisting of a set of motors driving the rotation of the cutting wheel. An energy efficient EPB design requires the optimization of the main drive to avoid over- or under powering of the machine. Key aspect is therefore a precise...
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Long-term vision and working programme on tunnels in the Netherlands
Abstract: The position of tunnels in their immediate environment and the transportation network is changing. Sustainability is becoming more important and increasingly higher demands are placed on the reliability and availability of tunnels throughout their entire life cycle. Faced with a huge renovation task, COB has formulated a longterm vision, to support and challenge all stakeholders, including the...
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Managing Knowledge for Future-proof Tunnels in the Netherlands
Abstract: Determining the scope of (structural) renovation of aging tunnels is a complicated task and modular renovation is becoming increasingly necessary. The COB Tunnel Programme aims at developing the knowledge necessary to renovate these tunnels in a modular fashion, to reduce hindrance as much as possible. Part of this program is the development of a Structural Health Analysis (SHA) for collecting...
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Predicting the range of volume loss in shallow tunnelling
Abstract: In estimating the effect of tunnelling on existing buildings, the value of volume loss, which is often determined by experience, is an important input parameter. This paper proposes a method to predict the volume loss for various cover-to-diameter C/D ratios in case of shallow tunnelling. By applying a number of (empirical) relation, such as the stability number of O’Reilly(1988) and an...
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The impact of shallow cover on tunnelling in soft soil
Abstract: Shield tunnelling is used widely in constructing underground infrastructure in cities due to the ability to limit settlements and damage to existing buildings. However, in an environment with soft overburden and buildings on pile foundations, the tunnel is often designed well below the pile tip level. There are two reasons for doing this: to reduce interaction between tunnelling process and...
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