• Title/Summary/Keyword: 하부구조

Search Result 1,954, Processing Time 0.025 seconds

Assessment of Thermal Stress in Temporary Bridge (가교량의 온도응력 평가)

  • Park, Young Hoon;Lee, Seung Yong;Byun, Yun Joo;Chang, Dong Il
    • Journal of Korean Society of Steel Construction
    • /
    • v.10 no.1 s.34
    • /
    • pp.1-10
    • /
    • 1998

  • The temporary steel bridges which are constructed for detour and constructional expediency are consisted of H-beams(as superstructure) and H-piles(as substructure). Because these members are fastened by high-tension bolts, there are no expansion joints in these bridges. So, these kinds of bridges have no system which can relieve the excessive thermal stress. In this investigation, monitoring system was set up at temporary steel bridge and stress and temperature changes of H-beam are monitored. From these measured data, it is analyzed that the relationship between ambient and main-girder temperature change, between temperature and stress change. With these analyses, it is resulted that the thermal stress take main part of stress variation in this bridge and the restrain of thermal longitudinal displacement of H-pile. In addition, because the connection part of H-beam to H-beam is weak in the continuous spans, the sub-modelling is well apt to reflect the effect of thermal stress.

  • PDF