Modal parameter identification for a GFRP pedestrian bridge

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Most codes of practice adopt a semi probabilistic design approach for the dimensioning and assessment of structures. Accordingly, structural safety is ensured by performing limit state verifications using design values determined with adequately calibrated ...

Geomembrane systems have been used in dams and reservoirs as rehabilitation technology since several decades and are now used worldwide. They act as impervious layer to prevent and mitigate water leakage and damage to structures. They meet the needs of man ...

Ultra-High-Performance Fibre Reinforced Cementitious Composite (UHPFRC) has recently been used to design lightweight structures and strengthen existing ones, with more than 300 applications in Switzerland. Several composite timber-UHPFRC bridges have been ...

The vibrational response of solid materials and structural components is substantially governed by their mechanical and geometrical properties. Low-frequency vibrations and modal frequencies are sensitive to global geometrical deviations, while high-freque ...

Flexure-based mechanisms have become state-of-the-art solutions for the design of high-precision mechanisms, free from friction wear, backlash, and lubrication. These properties which are necessary for applications in ultraclean or harsh environments, neve ...

As proposed in several design standards for structural concrete, including Eurocode 2 (EN:1992-1-1:2004) and fib's Model Code 2010, the shear design of slender members with shear reinforcement can be performed by means of consistent models based on suitabl ...

Bridges are a critical component of national infrastructures and economies. A significant percentage of bridges built all around the world are made of reinforced concrete which according to building codes have a life span between 80-100 years. However, str ...

This paper presents numerical and experimental studies on semi-active seismic response control of structures equipped with variable stiffness and damping structural joints. Such adaptive joints, which are comprised of a shape memory polymer (SMP) core rein ...

This paper examines the reliability of welded stud shear connectors for steel-concrete composite bridge girders. A finite element model of a simply-supported bridge was created featuring link connector elements representing the shear studs between beam and ...

The examination of bridges under service loading is key for understanding their condition and thus for their sustainable and efficient use. The need to extend the service duration of existing bridges is increasing, and therefore, efficient tools for examin ...

The concept of post-tensioned glass beams builds on the concrete analogy of the reinforced glass beams. By additionally prestressing the reinforcement in a post-tensioned system, a compressive pre-stress is applied on the glass, enhancing the initial fract ...

The effectiveness of post-tensioning in enhancing the fracture resistance of glass beams depends on the level of compressive pre-stress introduced at the glass edge surface that will in service be exposed to tensile stresses induced by bending. Maximum pre ...

Tensegrity structures have been widely utilized as lightweight structures due to their high stiffness-to-mass and strength-to-mass ratios. Minimal mass design of tensegrity structures subject to external loads and specific constraints (e.g., member yieldin ...

Described is a closed-loop control scheme capable of stabilizing a parametrically excited nonlinear structure in several vibration modes. By setting the relative phase between the spatially filtered response and the excitation, the open-loop unstable solut ...

The forms of U-shaped UHPFRC beams have not been investigated for the highway footbridge. Compared with the traditional section forms, the U-shaped UHPFRC beams can reduce the material consumption under the condition of providing the same bearing capacity. ...

Many research efforts have so far been devoted to the topic of shear design of members without transverse reinforcement since the first development in structural concrete. This has allowed a number of significant advances in the understanding of the phenom ...

This paper presents a new analytical model for estimating the free vibration of tapered friction piles. The governing differential equation for the free vibration of statically axially-loaded piles embedded in non-homogeneous soil is derived. The equation ...

Adaptive structures can modify their shape and internal forces through sensing and actuation in order to maintain optimal performance under changing actions. Substantial whole-life energy can be saved with respect to traditional passive designs through wel ...

This paper introduces a new semi-active strategy for vibration control of truss and frame structures equipped with variable stiffness and damping joints which consist of a shape memory polymer (SMP) core reinforced by an SMP-aramid composite skin. When the ...

The strengthening of existing steel structures against high-cycle fatigue (HCF) loading has become one of the most important topics of interest in structural rehabilitation. Apart from the conventional strengthening techniques that incorporate bulky and he ...

Modal parameter identification for a GFRP pedestrian bridge

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Influence of model uncertainty and long term deformations in action effects calculation in reinforced concrete structures

Dynamic behavior of exposed geomembrane systems in pressure waterways

Environmental and Life-Cycle Cost Evaluation of a Composite Timber-UHPFRC Bridge

Vibrational NDT with Under-sampled Data through Physics-informed Neural Networks

Damping of flexure blades based on bi-material additive manufacturing

Design of slender and squat reinforced concrete members with shear reinforcement

Fire performance evaluation of GFRP-balsa sandwich bridge decks

Seismic control performance of a three-story frame prototype equipped with semi-active variable stiffness and damping structural joints

Reliability analysis of welded stud shear connectors on simply-supported bridge girders

Fatigue examination of reinforced-concrete bridge slabs using acoustic emission and strain monitoring data

Flexural behaviour of post-tensioned glass beams: Experimental and analytical study of three beam typologies

Post-tensioning of glass beams: Analytical determination of the allowable pre-load

Minimal mass design of active tensegrity structures

Automatic locking of a parametrically resonating, base-excited, nonlinear beam

Study on Mechanical Performance of Prestressed UHPFRC U-Beam Bridges

From experimental evidence to mechanical modeling and design expressions: The Critical Shear Crack Theory for shear design

Analysis of Free Vibration Characteristics of Tapered Friction Piles in Non-homogeneous Soil Layers

Experimental testing of a small-scale truss beam that adapts to loads through large shape changes

Vibration Suppression Through Variable Stiffness and Damping Structural Joints

Strengthening of metallic members under mixed mode fatigue loading using prestressed CFRP plates