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2012年01期
| 標題 |
| 小半徑軌道交通連續(xù)梁橋頂梁更換支座方法(52卷) |
| 英文標題 |
| Bearing replacement method by jacks for small-radius continuous girder bridge in urban mass transit system |
| 摘要 |
| 對于兩處設固定支座的三跨曲線連續(xù)梁橋，固定支座之間的梁體不能自由伸縮而產生溫度力，將其中一處固定支座拆除后，梁體將產生位移。當頂梁更換支座時，為保證梁體順利復位，要合理控制由于溫度改變而引起的位移，并且控制好頂升位移或頂升力，以避免因頂升位移太大而導致梁體開裂。本文以一實際工程為例，針對橋梁受力特點和溫度力的作用，提出頂梁更換支座方法并進行安全評估。 |
| 作者 |
| 新聞作者:高濤，高日 |
| 關鍵字 |
