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A platform for research: civil engineering, architecture and urbanism
Underneath-penetrating bridge pile foundation construction method for controlling deformation of existing railway bridge
The invention discloses an underpass bridge pile foundation construction method for controlling deformation of an existing railway bridge, and relates to the technical field of bridge pile foundation construction. Comprising the following steps: arranging monitoring control points on site before construction of an underpass bridge pile foundation; collecting actual measurement data of a dynamic load construction site during the non-operation period of the high-speed rail; comparing finite element numerical simulation with field measured data to verify the correctness of model parameters; simulating high-speed rail pier deformation under the action of dynamic load construction during operation of the high-speed rail according to the verified model parameters; a pile position with large deformation is determined, and an assembly type steel casing rotary drilling and dry digging method construction technology is adopted during pile foundation construction; performing finite element numerical simulation and on-site actual measurement comparative analysis; and verifying the effect, and performing subsequent construction after the result is confirmed to be good. The influence of bottom construction of the lower pile foundation of the high-speed rail bridge on deformation of the high-speed rail is avoided.
本发明公开了一种控制既有铁路桥梁变形的下穿桥梁桩基施工方法，涉及桥梁下桩基施工技术领域。包括以下方面：下穿桥梁桩基施工前现场布置监测控制点；高铁不运行期间动荷载施工现场实测数据采集；有限元数值模拟与现场实测数据对比，验证模型参数的正确性；根据验证后的模型参数模拟高铁运行期间动荷载施工作用下高铁桥墩变形；确定变形较大的桩位，桩基施工时采用组拼式钢护筒旋挖钻干挖法施工工艺；进行有限元数值模拟与现场实测对比分析；效果验证，确认良好后进行后续施工。本发明解决了对于高铁桥梁的底部施工下桩基对高铁变形的影响。
Underneath-penetrating bridge pile foundation construction method for controlling deformation of existing railway bridge
The invention discloses an underpass bridge pile foundation construction method for controlling deformation of an existing railway bridge, and relates to the technical field of bridge pile foundation construction. Comprising the following steps: arranging monitoring control points on site before construction of an underpass bridge pile foundation; collecting actual measurement data of a dynamic load construction site during the non-operation period of the high-speed rail; comparing finite element numerical simulation with field measured data to verify the correctness of model parameters; simulating high-speed rail pier deformation under the action of dynamic load construction during operation of the high-speed rail according to the verified model parameters; a pile position with large deformation is determined, and an assembly type steel casing rotary drilling and dry digging method construction technology is adopted during pile foundation construction; performing finite element numerical simulation and on-site actual measurement comparative analysis; and verifying the effect, and performing subsequent construction after the result is confirmed to be good. The influence of bottom construction of the lower pile foundation of the high-speed rail bridge on deformation of the high-speed rail is avoided.
本发明公开了一种控制既有铁路桥梁变形的下穿桥梁桩基施工方法，涉及桥梁下桩基施工技术领域。包括以下方面：下穿桥梁桩基施工前现场布置监测控制点；高铁不运行期间动荷载施工现场实测数据采集；有限元数值模拟与现场实测数据对比，验证模型参数的正确性；根据验证后的模型参数模拟高铁运行期间动荷载施工作用下高铁桥墩变形；确定变形较大的桩位，桩基施工时采用组拼式钢护筒旋挖钻干挖法施工工艺；进行有限元数值模拟与现场实测对比分析；效果验证，确认良好后进行后续施工。本发明解决了对于高铁桥梁的底部施工下桩基对高铁变形的影响。
Underneath-penetrating bridge pile foundation construction method for controlling deformation of existing railway bridge
一种控制既有铁路桥梁变形的下穿桥梁桩基施工方法
WU XIAOLIANG (author) / SUN JUN (author)
2023-10-24
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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