Study on Structural Design of Key Beam of Suspended Monorail Three-Way Turnout
The second joint beam is the key beam body of the suspended monorail three-way turnout.The strength and deformation of the beam body will affect the operation accuracy of the locking and driving devices and thus affect the use of the entire turnout.At the same time,the bottom of the beam body is an open structure,and its excessive deformation will also affect driving safety.The static analysis and calculation of the beam body are carried out by finite element analysis software,and the stress and deformation of the beam body under different working conditions are obtained.The maximum deformation under the most unfavorable working conditions is 1.895 mm and the maximum stress is 133.36 MPa,which meets the requirements of relevant standards.At the same time,the deformation law of the joint beam is obtained from the calculation results,that is,when the joint beam is subjected to external load,the beam body produce a downward deflection in the vertical direction,transverse deformation at the bottom,and overturning deformation on the walking surface.The static analysis results are verified by field loading test.The test results show that in the marked area of static analysis,the measured value of the maximum vertical deformation of the beam is 1.5mm and the maximum transverse deformation is 1.55 mm.Excluding the influence of error,the results of loading test are consistent with the results of static analysis both in value and change law,which further verifies the effectiveness of static analysis and calculation.
suspended monorailthree-way turnoutturnout beamstatic analysisload test
NETL
NSTL
万方数据
