Steel plate-light weight concrete hollow composite deck was a type of novel composite deck which composed of steel plate, perforbond ribs connectors (PBL connectors) and light weight concrete and steel pipe. In order to understand the hollow composite decks mechanical performance, Static experiments of five specimens of this hollow composite slabs were conducted, among which two specimens were composed with longitudinal steel pipes and three specimens were composed with transversal steel pipe, with the aim to study the difference of the mechanical behaviors of the composite decks at the two orthogonal directions. Based on the experiment results, the effects of the direction of steel pips and the nominal shear-span of the slabs on the composite decks mechanical performance were especially studied. During the experiment process, the failure modes, strains of concrete and steel plate, cracking type, slippage of interface and the bearing capacity of the decks were studied in detail. From the experimental study, it could be found that there were no slippage between the steel plate and concrete were measured at the composite bridge decks, and the composite bridge decks showed high flexural rigidity, good ductility as well as better bearing capacity with the strength of bottom steel plate and top concrete both fully utilized. Therefore, it could be concluded that this type of composite bridge decks have good advantages at mechanical behaviors.

Kalman filtering (KF) has good potential in fast rotation of state of polarization (RSOP) tracking. Different measurement equations cause the diverse RSOP tracking performances. We compare the conventional KF (CKF) and the modified KF (MKF), which have different measurement equations. Semi-theoretical analysis indicates the lower conditional variances of measurement residuals and process noise of MKF. Compared with CKF, the MKF has > 3 dB optical signal-to-noise ratio (OSNR) improvement at the 10 MHz scrambling rate in simulation. For MKF, more significant tracking speed improvement exists for lower OSNR. MKF can be smoothly combined with an adaptive algorithm, which outperforms adaptive CKF throughout the simulations.

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In order to quantitatively calculate the stud shear bearing capacity after corrosion, this paper used the stud shear bearing capacity factor after corrosion to represent the stud corrosion degradation effects, and based on the analysis of the reasons for its reduction, the product between stud effective section area after corrosion and stud tensile strength was proposed to calculate the shear capacity coefficient. At the same time, based on the assumption of plasticity theory, the simplified calculation formula of the composite beam flexural capacity under hogging moment was derived by simplifying the sum of the flexural capacity of the steel beam, the longitudinal reinforcement in the concrete plate and the stud. The effect of interface stud corrosion for the flexural bearing capacity of steel-composite composite beam was considered by multiplying the stud Shear capacity coefficient after its corrosion, and the experimental data of 11 beams were combined to verify. The results showed that the calculated results of this method were highly consistent with the experimental results in the literature. The calculated results were on average less than 2% of the experimental results, and the coefficient of variation was only 0.01. The calculated results of the formula were consistent with the results of theoretical analysis in the literature, and the calculation method was simple and convenient. It can be evaluated for the composite beam flexural capacity under hogging moment with corroded shear studs

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