The temperature field analysis method of steel tube reinforced columns under fire by finite element analysis software ABAQUS is proposed in this paper. The theoretical method is validated by tests, and the calculated results agree well with those of tests. On the basis of that, the influencing laws of temperature rising time; section perimeter; steel reinforcement ratio and sectional core area ...

Multiscale modeling for cement-based materials, such as concrete, is a relatively young subject, but there are already a number of different approaches to study different aspects of these classical materials. In this paper, the parameter-passing multiscale modeling scheme is established and applied to address the multiscale modeling problem for the integrated system of cement paste, mortar, and...

Starting from the beginning of the 20-century, slip-forming is widely used in formwork due to fast concrete work. Slip-forming is one of the potential concrete formwork methods that improves speed and productivity of repetitive vertical concrete work. Typical projects that employ this technique are: silos, core of high-rise buildings, telecommunication towers, cooling towers, heavy concrete off...

We sketch a variant of the KGP agent model tailored to support service composition in service-oriented architectures. This allows to handle: user requirements, abstract and concrete workflows, possibly with annotations, inter-agent communication for supporting negotiation and persuasion, consultation of registries. We identify argumentation as core for Service-Oriented Architectures, and ground...

Abstract Pavement structure can be designed either as a flexible or rigid pavement based on its structural behaviour, with pavements being frequently favored due to advantages. One of the major problems that normally occurred in road construction was distresses quality materials. Numerous studies were carried out explore sustainable ways improve performance especially modification asphaltic con...

Monitoring the degradation of dynamic elastic modulus (Ed) concrete is great importance to track durability deterioration for hydraulic structures. For aqueduct under investigation in this study, bent frames and moment frame supports (Ed-frame), arch trusses (Ed-arch) shear stiffnesses asphaltic bearings U-shaped flumes (Kflume) are main parameters define behavior structure, which have direct c...

In recent years, the Lamb wave analysis by the multi-channel analysis of surface waves (MASW) for concrete structures has been an effective nondestructive evaluation, such as the condition assessment and dimension identification by the elastic wave velocities and their reflections from boundaries. This study proposes an effective Lamb wave analysis by the practical application of MASW to concre...

We analyze the concrete security provided by a signature scheme described in a recent Internet Draft by McGrew and Curcio.