The Experts below are selected from a list of 99588 Experts worldwide ranked by ideXlab platform

Joel P Conte - One of the best experts on this subject based on the ideXlab platform.

  • three dimensional seismic response of humboldt bay Bridge foundation ground system
    Journal of Structural Engineering-asce, 2008
    Co-Authors: Ahmed Elgamal, Zhaohui Yang, Joel P Conte
    Abstract:

    Soil-Structure interaction may play a major role in the seismic response of a Bridge Structure. Specifically, soil layers of low stiffness and strength may result in permanent displacement of the abutments and foundations, thus imposing important kinematic conditions to the Bridge Structure. A study to illustrate such phenomena is undertaken based on three-dimensional nonlinear dynamic finite-element (FE) modeling and analysis (for a specific Bridge configuration under a given seismic excitation). A Bridge-foundation-ground model is developed based on the structural configuration and local soil conditions of the Humboldt Bay Middle Channel Bridge. The FE model and nonlinear solution strategy are built in the open-source software platform OpenSees of the Pacific Earthquake Engineering Research Center. Based on the simulation results, the overall system seismic response behavior is examined, as well as local deformations/stresses at selected critical locations. It is shown that permanent ground deformation may induce settlement and longitudinal/transversal displacements of the abutments and deep foundations. The relatively massive approach ramps may also contribute to this simulated damage condition, which imposes large stresses on the Bridge foundations, supporting piers, and superStructure.

Zude Ding - One of the best experts on this subject based on the ideXlab platform.

  • structural damage diagnosis and fine scale finite element intelligence simulation of long span cable stayed Bridges
    Cluster Computing, 2019
    Co-Authors: Qianjun Chen, Zude Ding
    Abstract:

    According to the accumulation characteristics presented by the security threat factors existed in building Structure, it is relatively difficult to carry out real-time danger monitoring. In addition, the noise and Structure will form complex interference and make the real-time monitoring more difficult. Therefore, this paper proposes one Bridge Structure monitoring algorithm of restricted Boltzmann machine (SDRBM) based on sparse cross-entropy penalty factor. Firstly, the improvement of deep network learning process based on sparse cross-entropy penalty factor and restricted Boltzmann machine (RBM) has effectively resolved the homogenization problems existed in deep network learning process; secondly, the preset rough set is used to make pretreatment for input Bridge health signals to achieve complete preservation of data information and balance of effective reduction as well as simplify treatment complexity; finally, the experiment shows that the proposed DRBM Bridge Structure monitoring algorithm of sparse cross-entropy penalty factor can achieve Bridge safety monitoring under the condition of unknown noise and Structure.

Chunming Huang - One of the best experts on this subject based on the ideXlab platform.

  • a real time Bridge structural health monitoring device using cost effective one axis accelerometers
    International Conference on Intelligent Sensors Sensor Networks and Information Processing, 2015
    Co-Authors: Chihhsing Lin, Ssuying Chen, Chihting Kuo, Gangneng Sung, Chihchyau Yang, Chunming Huang
    Abstract:

    This work demonstrates a real-time Bridge Structure health monitoring device (HMD) with using three 1-axis accelerometers, Gateway, and analog to digital converter (ADC). The proposed HMD achieves the features of low cost and data synchronization of three 1-axis accelerometers. Furthermore, we develop a packet acquisition program to receive the data from remote sensors and then classify it based on time and date. Compared with 3-axis accelerometer, our proposed 1-axis accelerometers based device achieves 59.59% cost saving with high sensitivity 2000 mV/g.

Zhou Manshan - One of the best experts on this subject based on the ideXlab platform.

  • suspension Bridge Structure hanging wheel type belt conveyor
    2014
    Co-Authors: Zhou Manshan, Liu Jinshan, Zhang Yuan, Zhang Hua
    Abstract:

    The invention discloses a suspension Bridge Structure hanging wheel type belt conveyor which comprises a vertical beam, a reinforced horizontal beam, a supporting base, a track circular pipe, a pulley, a conveying belt, a steel wire rope, a sling, a horizontal blocking part and a guard bar. The vertical beam and the reinforced horizontal beam are connected through a bolt. The supporting base is arranged on the upper portion of the reinforced horizontal beam. The supporting base and the reinforced horizontal beam are welded. The track circular pipe is arranged on the upper portion of the supporting base. The track circular pipe and the supporting base are welded. The pulley is arranged on the track circular pipe. The conveying belt and the pulley are connected through a shaft of the pulley. The steel wire rope and the vertical beam are connected through a U-shaped clamp. The steel wire rope and the sling are connected through a U-shaped clamp. The horizontal blocking part and the vertical beam are connected through a bolt. The guard bar and the horizontal blocking part are connected through a bolt. The suspension Bridge Structure hanging wheel type belt conveyor is simple in Structure and can be adaptive to complex terrain such as a river striding Bridge, friction force is small, the driving power of the belt conveyor is lowered, the operation cost of the belt conveyor is greatly lowered, and safe and reliable operation of the belt conveyor is guaranteed.

  • suspended belt conveyor of suspension Bridge Structure
    2014
    Co-Authors: Zhou Manshan, Xu Chuanhui, Zhang Yuan, Wang Zhen
    Abstract:

    The invention discloses a suspended belt conveyor of a suspension Bridge Structure. The suspended belt conveyor of the suspension Bridge Structure comprises a supporting frame, an upper cross beam, an upper supporting roller set, a lower cross beam, a lower supporting roller set, steel wire ropes, slings, a cross bar and guard bars, wherein the supporting frame is welded to the upper cross beam, the upper supporting roller set is arranged on the upper cross beam, the lower supporting roller set is arranged on the lower cross beam, the lower cross beam is welded to the supporting frame, the steel wire ropes are connected with the supporting frame through U-shaped clamps, the steel wire ropes are connected with the slings through U-shaped clamps, the cross bar is connected with the supporting frame through bolts, and the guard rails are connected with the cross bar through bolts. The suspended belt conveyor of the suspension Bridge Structure is reasonable in Structure, can be adaptive to river-crossing and Bridge-crossing complex terrains, saves production cost, simplifies the production process, relieves the labor intensity for workers, largely reduces the operating cost, and guarantees safe and reliable operation.

  • suspension Bridge Structure for belt conveyor
    2012
    Co-Authors: Zhou Manshan, Sun Changzheng, Wang Zhengtao, Li Peng, Zhang Hua, Hou Hui
    Abstract:

    The utility model discloses a suspension Bridge Structure for a belt conveyor, comprising a main cable, Bridge towers, saddles, anchorages, slings, stiffening beams and steadying lines, wherein the top end of each Bridge tower is provided with two saddles; the main cable is arranged on the saddles; the anchorages are arranged on two sides of each Bridge tower; the anchorages are made from reinforced concrete in a pouring way; two ends of the main cable are anchored in the anchorages; the saddles are arranged along the main cable between the two Bridge towers; the slings are connected with the main cable through the saddles; the slings are connected with the stiffening beams through pin shafts; and the steadying lines are arranged on two sides of the stiffening beams. The suspension Bridge Structure for the belt conveyor is simple and rational in Structure, safe and reliable; the longer distances can be spanned through fewer materials, so that the purpose of facilitating the conveyance over a great-distance area is realized; and in addition, the cost is decreased, and the investment is reduced.

Hawon Song - One of the best experts on this subject based on the ideXlab platform.

  • service life prediction of a concrete Bridge Structure subjected to carbonation
    Construction and Building Materials, 2010
    Co-Authors: Seungwoo Pack, J P Hwang, Hawon Song
    Abstract:

    Abstract Carbonation-induced corrosion in concrete may often occur in a high carbon dioxide environment. In this study, the risk of carbonation of a concrete Bridge in an urban area was evaluated by measuring the carbonation rate and concrete cover depth in three different parts: the sound, cracked and construction joint parts of cover concrete. The average carbonation rate was ordered by the sound > joint > cracked parts, and the concrete cover depth measured by an ultrasonic detector indicated the slightly greater value than the designed one (50.0 mm). Then, the carbonation-free service life at the depth of the steel was calculated, based on in situ information, by the safety factor method and the Monte Carlo simulation. The service life calculated by the two methods was mostly identical. The sensitivity of the carbonation rate and concrete cover depth to the time to carbonation at the depth of the steel was mathematically determined.