摘要
Abstract
The rear hinged seat of a mast crane,which endures substantial uplift forces,is pivotal to the reliable connection between machine and concrete foundation.By examining the general layout of a 1,200t mast crane,the stress at the hinge base was analyzed,bolt calculation methods across various design standards were compared and the engineering calculation methods for embedded bolts in rear hinged base were discussed.Through the combination of Creo and Ansys,the embedded bolts with varying stiffness in hinged seats and different flange thicknesses(bolt clamping lengths)were calculated swiftly.Additionally,the force distribution of embedded bolts with different pre-tightening forces was assessed.By analyzing the calculation results from various models,the influence of hinged seat stiffness and flange thickness(bolt clamping length)on the stress distribution within embedded bolts was identified.Through a comparison of engineering calculation outcomes,suggestions on paying attention to the compatibility of hinged seat stiffness and flange thickness when employing similar engineering calculation methodologies are given.This study can serve as a reference for the design of large hinged seat foundations in similar projects.关键词
桅杆式起重机/铰座基础/预埋螺栓/Creo/AnsysKey words
mast crane/hinged base/embedded bolts/Creo/Ansys分类
机械制造
