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| 多跨曲线连续刚构桥悬臂施工控制试验研究 |
| Experimental Research on Cantilever Construction Control of Multi-span Curved Continuous Rigid Frame Bridge |
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| DOI：10.16018/j.cnki.cn32-1650/n.202304010 |
| 中文关键词: 曲线连续刚构桥悬臂浇筑线形控制试验研究有限元分析 |
| 英文关键词: curved continuous rigid-frame bridge cantilever casting linear control experimental study finite element analysis |
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| 中文摘要: |
| 曲线连续刚构桥在悬臂浇筑施工中，由于结构体系随着施工进程不断转换，导致结构的受力状态愈加复杂。为确保曲线连续刚构桥顺利合龙且应力状态满足设计要求，需对施工中结构状态进行分析研究。以马王河特大桥主桥为工程背景，使用Midas Civil软件建立有限元模型，并计算了施工阶段桥梁的预拱度值及立模标高；在与现场实测应力及线形数据进行对比后，在二者吻合的基础上对全桥最终线形进行了拟合，结果表明: 成桥后桥梁结构的受力状态及线形与目标一致。 |
| 英文摘要: |
| In the cantilever casting construction of curved continuous rigid frame bridge, the stress state of the structure is more and more complicated due to the continuous transformation of the structural system with the construction process. In order to ensure the smooth closure of curved continuous rigid frame bridge and the stress state meet the design requirements, it is necessary to analyze and study the structural state during construction. With the main bridge of Mawanghe bridge as the engineering background, Midas Civil software was used to establish the finite element model, and the precamber value and mold elevation of the bridge in the construction stage were calculated. After comparing with the on-site measured stress and linear data, the final linear shape of the entire bridge was fitted based on their agreement. The results show that the stress state and linear shape of the completed bridge are consistent with the target. |
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