Based on the long-span slab in an assembled building project, ABAQUS is used to simulate mechanical properties and failure modes of under condition whole span cast-in-place two-way rebar truss composite (hereinafter referred as slab) with different splicing methods, which slabs adopt fixed support loads are uniformly distributed load. The finite element simulation results show that integrity no...

The research described in this paper focuses on the application of modal strain techniques on a multi-girder bridge superstructure with the objectives of identifying the presence of damage and detecting false damage diagnosis for such structures. The case study is a one-third scale model of a slab-on-girder composite bridge superstructure, comprised of a steel-free concrete deck with FRP rebars...

An integrated life-cycle assessment and life-cycle cost analysis model was developed and applied to enhance the sustainability of concrete bridge infrastructure. The objective of this model is to compare alternative bridge deck designs from a sustainability perspective that accounts for total life-cycle costs including agency, user, and environmental costs. A conventional concrete bridge deck a...

In this study, we consider the use of seismic sensors for footstep localization in indoor environments. A popular strategy of localization is to use the measured differences in arrival times of source signals at multiple pairs of receivers. In the literature, most algorithms that are based on time differences of arrival (TDOA) assume that the propagation velocity is a constant as a function of ...

OBJECTIVE To identify the factors that determine unintentional injuries in children living in the community of Paraisopolis, in the city of São Paulo, Brazil. METHODS A cross-sectional and non-controlled study. Data collected during 4 consecutive months through questionnaires filled out for the Einstein Program in Paraisopolis Community included identification of the patient and his/her famil...

This paper proposes a curved link-slab (CLS) structure, simplified into hingeless arch model, to address the current cracking phenomenon of CLS concrete. The stress formula under various loads is derived based on classical mechanic’s method. Based an actual bridge example, mechanical properties are analyzed different and load combinations. results show that: (1) significantly lower than that fl...

Large increases in traffic loads led to extensive fatigue damage existing orthotropic steel roadway slabs of bridges. Reinforced concrete bridges and conventional composite are less susceptible but considerably heavier. With the so-called ortho-composite-slab (OC-slab) a lightweight robust construction is currently being developed as an alternative methods. The basic ideas for design explained ...

The Ground Penetrating Radar (GPR) has been studied for a long time as a non-destructive evaluation (NDE) technology for inspection of concrete structures. Currently, the most widely used technique for interpreting GPR data of concrete bridge decks is the one that based on the amplitudes measured at various interfaces such as asphalt-concrete, top rebar, or slab bottom. The assumption behind th...

Metaconcrete is a newly manmade concrete where traditional aggregates are partially replaced by resonant aggregates. The metaconcrete slab can attenuate vibration in the specific frequency bandgap which created locally To enhance attenuation performance of slab, dual-resonant aggregate was designed and embedded into slab. Firstly, mass-in-(mass-in-mass) analytical model used to predict characte...

This paper presents a comprehensive numerical and theoretical investigation into the flexural capacities of composite joints with reinforced concrete (RC) slab. The improved 3D (three-dimensional) models were established by MSC. Marc (2012) calibrated experimental observations presented in companion (Mou et al., 2019a [1]). Supplementary parametric studies then undertaken to examine effect slab...