Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Internal reinforcing method for inclined web and bottom plate in incremental launching construction of large-span continuous steel box girder bridge
The invention provides a large-span continuous steel box girder bridge incremental launching construction inclined web and bottom plate internal reinforcement method. The method comprises the following steps that a steel box girder incremental launching initial finite element model is established; performing numerical simulation static analysis on the bar system structure; establishing a three-dimensional entity finite element model of the steel box girder under the most unfavorable working condition of the cantilever state; carrying out buckling analysis on the characteristic values; obtaining a first-order buckling load coefficient according to buckling analysis, and comparing the first-order buckling load coefficient with an expected value; and the component position at the first-order maximum buckling deformation position is reinforced for the first time in the three-dimensional entity finite element model of the steel box girder under the most unfavorable working condition of the cantilever state. The construction method has the beneficial effects that the construction scheme is reasonable in design, low in construction and manufacturing cost and convenient; and in combination with actual engineering conditions, measures for improving local stress characteristics of the steel box girder are provided, key parts are designed and optimized in construction, the buckling deformation resistance of the structure is improved, and it is ensured that the structure is safe and feasible in the pushing process.
本发明提供了大跨度连续钢箱梁桥顶推施工斜腹板和底板内部加固方法，包括以下步骤：建立钢箱梁顶推初始有限元模型；进行杆系结构数值模拟静力分析；建立悬臂状态最不利工况下的钢箱梁三维实体有限元模型；进行特征值的屈曲分析；根据屈曲分析获得第一阶屈曲荷载系数，并与预期值对比；在悬臂状态最不利工况下的钢箱梁三维实体有限元模型中对第一阶最大屈曲变形处的构件位置进行第一次加固补强。本发明有益效果：使施工方案设计合理、施工制造成本低且方便；结合工程实际情况，提出改善钢箱梁局部受力特性措施，并对关键部位进行设计和施工优化，增加结构抗屈曲变形的能力，确保顶推过程结构安全可行。
Internal reinforcing method for inclined web and bottom plate in incremental launching construction of large-span continuous steel box girder bridge
The invention provides a large-span continuous steel box girder bridge incremental launching construction inclined web and bottom plate internal reinforcement method. The method comprises the following steps that a steel box girder incremental launching initial finite element model is established; performing numerical simulation static analysis on the bar system structure; establishing a three-dimensional entity finite element model of the steel box girder under the most unfavorable working condition of the cantilever state; carrying out buckling analysis on the characteristic values; obtaining a first-order buckling load coefficient according to buckling analysis, and comparing the first-order buckling load coefficient with an expected value; and the component position at the first-order maximum buckling deformation position is reinforced for the first time in the three-dimensional entity finite element model of the steel box girder under the most unfavorable working condition of the cantilever state. The construction method has the beneficial effects that the construction scheme is reasonable in design, low in construction and manufacturing cost and convenient; and in combination with actual engineering conditions, measures for improving local stress characteristics of the steel box girder are provided, key parts are designed and optimized in construction, the buckling deformation resistance of the structure is improved, and it is ensured that the structure is safe and feasible in the pushing process.
本发明提供了大跨度连续钢箱梁桥顶推施工斜腹板和底板内部加固方法，包括以下步骤：建立钢箱梁顶推初始有限元模型；进行杆系结构数值模拟静力分析；建立悬臂状态最不利工况下的钢箱梁三维实体有限元模型；进行特征值的屈曲分析；根据屈曲分析获得第一阶屈曲荷载系数，并与预期值对比；在悬臂状态最不利工况下的钢箱梁三维实体有限元模型中对第一阶最大屈曲变形处的构件位置进行第一次加固补强。本发明有益效果：使施工方案设计合理、施工制造成本低且方便；结合工程实际情况，提出改善钢箱梁局部受力特性措施，并对关键部位进行设计和施工优化，增加结构抗屈曲变形的能力，确保顶推过程结构安全可行。
Internal reinforcing method for inclined web and bottom plate in incremental launching construction of large-span continuous steel box girder bridge
大跨度连续钢箱梁桥顶推施工斜腹板和底板内部加固方法
CHEN NINGXIAN (Autor:in) / ZHANG HAISHUN (Autor:in) / JIANG XIAOJIN (Autor:in) / ZHANG BIN (Autor:in) / YU LONGBO (Autor:in) / LIU WEITAO (Autor:in) / WANG XUDONG (Autor:in) / CAI MENGLIN (Autor:in) / LIANG BIN (Autor:in) / XIONG JINGGANG (Autor:in)
15.11.2022
Patent
Elektronische Ressource
Chinesisch
Reinforcing device for incremental launching construction of large-span steel truss girder bridge
| Europäisches Patentamt | 2024
Incremental launching construction method for large-span steel box girder bridge crossing riverway
| Europäisches Patentamt | 2024
Large-span steel truss girder bridge incremental launching construction auxiliary device and method
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2023
Side span steel truss girder incremental launching construction method
| Europäisches Patentamt | 2024