The Millennium Footbridge was opened to the public on June 10, 2000 – the first new bridge across the River Thames in historic London in more than a century. Nearly 100,000 people used the new bridge in its first day of operation. On June 12, 2000, the Millennium Bridge was ordered closed, due to hazardous deck motions. Seemingly random pedestrian footfalls were causing resonance of the bridge ...

Sonic Echo (SE) testing method is a well-known, versatile method to gather information pertaining to unknown bridge foundations. Many studies on the applicability and methodology improvement of SE tests to evaluate individual piles and foundations supporting the superstructure have been reported previously. However, there is a rare opportunity for obtaining the performance of SE tests without t...

This paper introduces the concept of Integrated Structures and Materials Design (ISMD). ISMD combines materials engineering and structural engineering for the purpose of more effectively achieving targeted structural performance, by adopting material composite properties as the shared link. An application example, design of a bridge deck link-slab, is used to illustrate the essential elements o...

One of the main goals in design girder bridge deck systems is to determine cross-sectional distribution live loads across different girders that make up cross-section deck. Structural grillage models and current standards based on a Load Distribution Factor (LDF) provide oversized designs, as demonstrated this paper. This research introduces novel method allows decks be calculated by applying m...

This paper introduces recent experience of Ramboll Finland bridge inspectors and NDTexperts in condition evaluation of road bridges deck surface structure by using state of the art NDTtechniques.This paper focuses on possible benefits of applying NDTtechniques in condition evaluation of road bridge deck surface structures. In addition, examples from several actual test cases are reviewed. Only ...

Skew bridges are common in highways and railway lines when non perpendicular crossings are encountered. The structural effect of skewness is an additional torsion on the bridge deck which may have a considerable effect, making its analysis and design more complex. In this paper, an analytical model following 3D beam theory is firstly derived in order to evaluate the dynamic response of skew bri...

plane-wave pseudopotential density functional theory (oft) periodic slab calculations were performed usingthe giteralized gradient approximation (gha) to investigate the adsorption of nitric oxide(no) on the (i ii)surface of cu. copper rface was stimulated using th p 'odic slab method consisting of five atomic layers.four different adsorption saes (atop. bridge, rcp hollow, and fcc hollow) were...

The seismic assessment of existing bridges is the utmost importance to characterise main structural deficiencies, estimate risk, prioritise retrofit interventions, or losses and repair costs in case earthquakes. above tasks require information on damage mechanisms likely occur as well extent over structure. Such types are generally not provided by classical fragility analysis, which mainly focu...

The steel-concrete composite girder bridge with V-shaped piers is a new type of structure. It has both the unique mechanical performance combined continuous and that pier bridge. At present, studies on properties steel main girders concrete deck slabs are mainly focused substructure for vertical piers, but not solidified. However, if cemented to girder, will directly affect total superstructure...