Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Longitudinal wet joint pouring deformation control method for eccentric half-range steel-concrete combined box girder
The invention relates to a large-volume longitudinal wet joint pouring deformation control method for an eccentric half-range steel-concrete combined box girder with the length of 32.25 m, the width of 17.8 m and the weight of more than 539 tons. Before wet joint pouring, rigid supporting piers of a steel-concrete structure are additionally arranged on the basis of a supporting pier support tool system, the rigid supporting piers are supported at the positions of side webs with relatively low rigidity, the supporting points are supported at the positions of each cantilever partition plate and the beam ends on the two sides of the eccentric half-range steel-concrete combined box beam, the sections are supported and leveled through the adjusting cushion blocks, the top surface elevation of the sections is guaranteed, all points are evenly stressed, and the section size of the sections is consistent with the size in the total splicing acceptance check process. The method has the advantages that the rigid supporting piers are used for supporting and controlling deformation during construction of the large-volume wet joint of the half-range steel-concrete combined box girder, the top surface elevation of the section is ensured, uniform stress of each point is ensured, the section size of the section is ensured to be consistent with the size during total splicing acceptance, inelastic deformation can be eliminated through pre-pressing, the elastic deformation compensation amount of the formwork is corrected, finally, wet joint concrete is poured, wet joint pouring construction of the half-range steel-concrete combined box girder is completed, and the overall boundary dimension of the poured steel-concrete combined girder is guaranteed.
本发明涉及一种长32.25m，宽17.8m，重量超过539吨的偏心半幅钢混组合箱梁大方量纵向湿接缝浇筑变形控制方法，湿接缝浇筑前，在支撑墩支架工装系统基础上增加钢混结构的刚性支撑墩，刚性支撑墩支撑于刚度相对较弱的边腹板位置，支撑点支撑于偏心半幅钢混组合箱梁每道挑臂隔板及两侧梁端位置，并利用调整垫块支撑调平节段，保证节段的顶面标高、各个点均匀受力、节段的断面尺寸与总拼验收时的尺寸相一致。优点：利用刚性支撑墩支撑控制半幅钢混组合箱梁大方量湿接缝施工时的变形，不仅保证节段的顶面标高，并保证各个点均匀受力，保证节段的断面尺寸与总拼验收时的尺寸相一致，而且能够通过预压，消除非弹性变形量，修正模板弹性变形补尝量，最后浇筑湿接缝混凝土，完成半幅钢混组合箱梁湿接缝浇筑施工，保证浇筑后钢混组合梁的整体外形尺寸。
Longitudinal wet joint pouring deformation control method for eccentric half-range steel-concrete combined box girder
The invention relates to a large-volume longitudinal wet joint pouring deformation control method for an eccentric half-range steel-concrete combined box girder with the length of 32.25 m, the width of 17.8 m and the weight of more than 539 tons. Before wet joint pouring, rigid supporting piers of a steel-concrete structure are additionally arranged on the basis of a supporting pier support tool system, the rigid supporting piers are supported at the positions of side webs with relatively low rigidity, the supporting points are supported at the positions of each cantilever partition plate and the beam ends on the two sides of the eccentric half-range steel-concrete combined box beam, the sections are supported and leveled through the adjusting cushion blocks, the top surface elevation of the sections is guaranteed, all points are evenly stressed, and the section size of the sections is consistent with the size in the total splicing acceptance check process. The method has the advantages that the rigid supporting piers are used for supporting and controlling deformation during construction of the large-volume wet joint of the half-range steel-concrete combined box girder, the top surface elevation of the section is ensured, uniform stress of each point is ensured, the section size of the section is ensured to be consistent with the size during total splicing acceptance, inelastic deformation can be eliminated through pre-pressing, the elastic deformation compensation amount of the formwork is corrected, finally, wet joint concrete is poured, wet joint pouring construction of the half-range steel-concrete combined box girder is completed, and the overall boundary dimension of the poured steel-concrete combined girder is guaranteed.
本发明涉及一种长32.25m，宽17.8m，重量超过539吨的偏心半幅钢混组合箱梁大方量纵向湿接缝浇筑变形控制方法，湿接缝浇筑前，在支撑墩支架工装系统基础上增加钢混结构的刚性支撑墩，刚性支撑墩支撑于刚度相对较弱的边腹板位置，支撑点支撑于偏心半幅钢混组合箱梁每道挑臂隔板及两侧梁端位置，并利用调整垫块支撑调平节段，保证节段的顶面标高、各个点均匀受力、节段的断面尺寸与总拼验收时的尺寸相一致。优点：利用刚性支撑墩支撑控制半幅钢混组合箱梁大方量湿接缝施工时的变形，不仅保证节段的顶面标高，并保证各个点均匀受力，保证节段的断面尺寸与总拼验收时的尺寸相一致，而且能够通过预压，消除非弹性变形量，修正模板弹性变形补尝量，最后浇筑湿接缝混凝土，完成半幅钢混组合箱梁湿接缝浇筑施工，保证浇筑后钢混组合梁的整体外形尺寸。
Longitudinal wet joint pouring deformation control method for eccentric half-range steel-concrete combined box girder
偏心半幅钢混组合箱梁纵向湿接缝浇筑变形控制方法
LI YICHENG (Autor:in) / CHENG YUHAI (Autor:in) / LIU ZHIGANG (Autor:in)
01.02.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
Manufacturing method of super-large eccentric half-range steel-concrete combined box girder
| Europäisches Patentamt | 2022
| Europäisches Patentamt | 2021
Overall assembly structure of eccentric half-amplitude steel-concrete combined box girder
| Europäisches Patentamt | 2022