Vertical seismic response of overhead crane

Otani, Akihito; Nagashima, Keisuke; Suzuki, Junya

doi:10.1016/s0029-5493(01)00483-6

Cited by 13 publications

(10 citation statements)

References 1 publication

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“…Greiner's Crane Handbook [23] provides important information regarding crane design, manufacturing, and operation. Otani et al [24] described the vertical seismic response of a 150-ton box girder crane of 35m and concluded that a linear analysis was sufficient to find the reaction forces on the wheels even when the leap phenomenon had occurred in the overhead crane. Alkin et al [25] used shell and solid elements for the optimization of 32ton and 13 m span crane.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Box Type Girder With and Without Industrial Constraints

Abid¹,

Khan²,

Wajid³

2018

IIUMEJ

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In this paper three dimensional nonlinear finite element analysis is performed for the optimization of an overhead crane box girder for capacity (50~120ton) and span (10 ~ 32 m) for safe bending stress and deflection with minimum mass and volume. A customized optimization code is developed using interpolative relations and correction factors to achieve optimized results with and without considering industrial constraints. A cutting and welding plan is developed to provide a standard operating procedure for the manufacturing of the box girder. Bill of materials, box girder design dimensions, and cutting and welding lengths are recorded with considerable time saving. ABSTRAK: Kertas ini mengkaji tentang analisis tidak linear tiga dimensi unsur terhingga bagi mengoptimumkan kotak kren galang atas kepala bagi kapasiti (50 ~ 120 tan) dan pada kadar (10 ~ 32 m) bagi takat lentur selamat dan pesongan dengan jisim minimum dan isipadu. Kod optimum penyesuaian telah direka mengguna pakai kaitan interpolatif dan faktor-faktor pembetulan bagi mencapai keputusan yang optimum, dengan dan tanpa mengambil kira kekangan industri. Pelan pemotongan dan kimpalan telah dicipta bagi menyediakan prosedur operasi biasa bagi pembuatan kotak galang. Rang undang-undang bahan, dimensi reka bentuk kotak galang, pemotongan dan panjang kimpalan telah direkodkan dengan penjimatan masa yang besar.

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Section: Introductionmentioning

confidence: 99%

Optimization of Box Type Girder With and Without Industrial Constraints

Abid¹,

Khan²,

Wajid³

2018

IIUMEJ

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“…Regarding the earthquake response of these structures, not many publications can be found in the literature. Komori et al [9] carried out seismic tests under horizontal excitation whereas Otani et al [10] focused on the vertical earthquake response of a 1/8 scale model. Schukin et Vayandrakh [11] studied the earthquake behavior of a polar crane bridge by means of a comprehensive finite element model.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical investigation of the earthquake response of crane bridges

Feau

Politopoulos

Kamaris

et al. 2015

Engineering Structures

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The paper presents an experimental and numerical investigation of the earthquake response of crane bridges. The main contributions of the authors to this field consist in: carrying out an experimental campaign on a model of a crane bridge;  determining a relevant similarity for the seismic tests which preserves the ratios of seismic forces to friction forces and of seismic forces to gravity forces, without added masses; interpreting the experimental results by means of numerical analysis for both low and high excitation intensities; proposing a simplified model of the crane bridge which could be used as a part of a bigger model to account for possible interaction between the supporting main structure and the crane bridge.

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“…In the study, especially the contact problem between wheels and rails during the earthquake is the focus, a model of 1/8 ratio upon the wheel tray connection of crane is composed; dynamic effects on the system are then observed by applying actual earthquake data on an earthquake tray. Otani et al [4] observed vertical vibrations that are Fig. 1 A collapsed crane in earthquake [1] formed with the effect of an earthquake on overhead cranes by composing a model of 1/8 ratio of an overhead crane to observe dynamic effects on the system by applying actual earthquake data on an earthquake tray.…”

Section: Introductionmentioning

confidence: 99%

Self-tuning fuzzy logic control of crane structures against earthquake induced vibration

et al. 2010

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Self-tuning fuzzy logic controllers (STFLC) for the active control of Marmara Kocaeli Earthquake excited crane structures are studied in this paper. Vibration control using intelligent controllers, such as fuzzy logic has attracted the attention of structural control engineers during the last few years, because fuzzy logic can handle, uncertainties and heuristic knowledge and even non-linearities effectively and easily. The improved seismic control performance can be achieved by converting a simply designed static gain into a real time variable dynamic gain through a self-tuning mechanism. A self-tuning fuzzy logic controller is designed to reduce the vibrations of the crane structure. The simulated system has a five degrees-offreedom and modeled system was simulated against the ground motion of the Marmara Kocaeli Earthquake (M w = 7.4) in Turkey on August 17, 1999. At the end of the study, the time history of the crane bridge and portal legs displacements, accelerations, and frequency responses of the both uncontrolled and controlled cases are presented. Additionally, the performance of the designed STFLC is also compared with a PD controller. Simulations of an earthquake excited bridge and portal legs are performed to prove the validity of proposed control strategy.

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Vertical seismic response of overhead crane

Cited by 13 publications

References 1 publication

Optimization of Box Type Girder With and Without Industrial Constraints

Optimization of Box Type Girder With and Without Industrial Constraints

Experimental and numerical investigation of the earthquake response of crane bridges

Self-tuning fuzzy logic control of crane structures against earthquake induced vibration

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