Working Mechanism of a High-performance Tower Crane Attached to Wall Joints

Yao, Gang; Xu, Chengcheng; Yang, Yang; Wang, Mingpu; Mao, Zhang; Thabeet, Ayad

doi:10.25103/jestr.111.03

Cited by 6 publications

(4 citation statements)

References 8 publications

(12 reference statements)

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“…G. Yao et al (2018) proposed to apply the finite element method and the Saint-Venant principle to conduct experiments to determine the stability of the installation structure. In contrast to this study, a 1:2 scale model of a tower crane installation was used instead.…”

Section: Conflict Of Interestmentioning

confidence: 99%

Untitled

2023

Tehnìka ta energetika

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The research is devoted to the topical problem of the efficiency of turning wide-span bridge machines in the track farming system. The research aims to study the curvilinear movement along the soil traces of a constant technological track of an arbitrary multi-supported bridge machine, considering its design and method of turning, parameters, modes of movement and loading. Experimental studies were conducted, involving the use of a modern strain track and specially designed equipment for electrical measurements of non-electrical quantities. The processing of research data was carried out on a personal computer. A methodology for compiling private models of turning off the bridge vehicle moving along the soil trace of the constant technological track was developed. As a result of the joint solution problem of the bridge machine turning, it is possible to determine all output parameters of curvilinear motion: trajectory, tractive forces, turning radius, slipping, and actual speeds. The force interaction of the bridge machine's undercarriage with the soil trace of a constant track is presented based on flat sliding with a variable anisotropic friction coefficient of adhesion φ yd , depending on the properties of the track. As the radius of the wheel, the width of its tire and the air pressure in it, as well as the vertical load that acts on it, the coefficient of traction of the bridge machine φ yd increases, which may cause higher slippage. The adequacy of the model of stationary turning of the overhead machine is confirmed by experimental estimation of the

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Section: Conflict Of Interestmentioning

confidence: 99%

Untitled

2023

Tehnìka ta energetika

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“…10(d). Some researchers use this approach to study the structural behaviour of crane components, such as its joints under different loading conditions [76]. Also, optimization is applied to find the optimum or near-optimum design of crane supports in terms of economic feasibility and structural stability [28].…”

Section: Crane Stabilitymentioning

confidence: 99%

Crane operations and planning in modular integrated construction: Mixed review of literature

Hussein

Zayed

2021

Automation in Construction

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“…Many temporary construction structures such as climbing formwork at the construction site have less resistance to earthquakes. When subjected to earthquakes, they will be damaged or even collapsed, causing huge economic losses and endangering the lives of construction workers on-site [16]. During the Wenchuan earthquake, many climbing formwork were destroyed or even collapsed at the construction site.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Characteristics and Time‐History Analysis of Hydraulic Climbing Formwork for Seismic Motions

Yao

Guo

Yang

et al. 2021

Advances in Civil Engineering

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With the widespread use and increasing cycle life of climbing formwork to construct high-rise buildings in earthquake-prone areas, the risk of earthquakes during the construction period increases. Hence, it is necessary to analyze the seismic response of climbing formwork. According to actual climbing formwork in the super high-rise office building of Wanda Plaza in Kunming, China, the finite element model of the climbing formwork is established on the Ansys platform. The correctness of the model is verified by comparing the natural frequencies of the actual climbing formwork and the finite element model. The time-history analysis of the climbing formwork subjected to earthquakes of varying strong magnitudes is carried out. The maximum displacement position and maximum von Mises stress position of the climbing formwork under different working conditions are determined, and the seismic response of the climbing formwork is analyzed. It has been found that when the formwork is under construction, the maximum displacement position of the climbing formwork is at the center of the long beam of the upper platform, and the maximum von Mises stress position is the joint of the outer pole of the main platform and tripod. Under the climbing condition, the maximum displacement position of the climbing formwork is at the top of the outer pole of the upper platform, and the maximum von Mises stress position is the joint of the beam of the tripod and guide rail. The climbing formwork is partially damaged under the simulated earthquake. However, the displacement is large, and some components have reached the yield state. It is recommended to strengthen the connection between the upper platform and the guide rail and enhance the strength and rigidity of the outer pole and tripod. Climbing formwork is more sensitive to horizontal earthquakes and has minimal sensitivity to vertical earthquakes. The structure attached to the climbing formwork will reduce its sensitivity to earthquakes. The research results are of practical significance for seismic design and improvement of climbing formwork.

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Working Mechanism of a High-performance Tower Crane Attached to Wall Joints

Cited by 6 publications

References 8 publications

Untitled

Untitled

Crane operations and planning in modular integrated construction: Mixed review of literature

Dynamic Characteristics and Time‐History Analysis of Hydraulic Climbing Formwork for Seismic Motions

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