| 横向加筋注浆技术防治高速公路桥头跳车技术研究 |
| Research on Transverse Reinforcement Grouting Technique for Preventing Highway Bump at the Ends of Bridges |
| 投稿时间：2014-09-10 |
| 中文关键词:桥梁工程 横向加筋注浆技术 有限元模拟 桥头跳车 波速测试 |
| 英文关键词:bridge engineering transverse reinforced grouting finite element analysis bump at the ends of bridges wave velocity measurement |
| 基金项目:河北省交通运输厅计划项目（T 2010141） |
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| 中文摘要: |
| 基于“刚柔过渡”形变原理，研发横向加筋注浆技术，以西柏坡高速公路BP1+942冶河大桥0号台为工程背景，借助通用有限元分析软件MIDAS/GTS建立三维立体模型，对经过横向加筋注浆处理后的桥头路基在不同工况情况下进行模拟计算，研究加筋材料不同横、竖间距布置对桥头路基过渡段路基沉降及不同深度水平位移的影响，探寻加筋材料的合理布置方式并进行优化，为施工提供理论依据和参考。分析研究了横向加筋注浆技术的施工参数，并采用该技术对西柏坡高速公路BP1+942冶河大桥0号台背进行了处治。选用面波波速测试法对横向加筋注浆试验加固效果进行了检测，并继续对实际处理效果进行了长期的跟踪观测，验证了实际检测与有限元模拟结果的相似性，证明了数值模拟的合理性，论证了横向加筋注浆技术对防治桥头跳车的有效性。 |
| 英文摘要: |
| Based on the deformation principle of “Flexible Rigid Transition”, transverse reinforced grouting is designed. In the context of 0# abutment of Yehe Bridge at BP1 +942 of Xibaipo highway, the condition of the bridgehead roadbed which has been transverse reinforced grouted is simulated under different operating modes via MIDAS/GTS software of general finite element analysis. The impacts of different horizontal and vertical spacing types in the layout of the reinforced materials on subgrade settlement at transitional section of bridgehead roadbed and horizontal displacement of different depth are investigated. The optimal layout of the reinforced materials is analyzed. The results could serve as a reference for practical construction. Construction parameters of the transverse reinforced grouting are analyzed and treatments are carried out for 0# abutment of Yehe Bridge at BP1 +942 of Xibaipo highway. The effectiveness of consolidation in the transverse reinforced grouting test is evaluated by the surface wave velocity measurement method, and long term observation for practical effectiveness has been made. The results validate the similarity between the practical effectiveness and simulation results obtained via general finite element analysis. It also verifies the correctness of numerical simulation and demonstrates the effectiveness of the transverse reinforced grouting for preventing bump at the ends of bridges. |
| 刘建敏.横向加筋注浆技术防治高速公路桥头跳车技术研究[J].石家庄铁道大学学报(自然科学版),2015,(4):39-47. |
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