A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Bridge pier body and arch ring reinforcing construction method
The invention relates to a bridge pier body and arch ring reinforcing construction method. According to the bridge pier body and arch ring reinforcing construction method, upper-section pier body outer wrapping concrete and arch ring sleeve arch concrete are poured synchronously, the age difference between an upper-section pier body outer wrapping concrete structure and an arch ring sleeve arch concrete structure is reduced, shrinkage creep of the concrete of the two structures is kept consistent, the number of shrinkage cracks of the concrete arch ring is effectively reduced, and the construction efficiency is improved. And the width and depth of the crack. The pier body outer wrapping concrete and the arch ring arch concrete are poured through self-compacting shrinkage-compensating concrete, polypropylene anti-crack fibers, an anti-segregation agent and an air entraining agent are added into the self-compacting shrinkage-compensating concrete, and on the premise that the concrete construction workability (the expansion degree is larger than 600 mm) is guaranteed, the number of shrinkage cracks is further effectively reduced. In addition, the use of the air entraining agent and the grouting process ensure the compactness of the junction surface of the new and old arch rings and improve the arch ring sleeving quality of the arch ring.
本发明涉及一种桥梁墩身与拱圈加固施工方法。所述桥梁墩身与拱圈加固施工方法中，上段墩身外包混凝土与拱圈套拱混凝土同步浇筑，缩小上段墩身外包混凝土结构与拱圈套拱混凝土结构的龄期差，保持两结构混凝土的收缩徐变一致，有效降低混凝土拱圈收缩裂缝的数量，以及裂缝的宽度、深度。所述墩身外包混凝土、拱圈套拱混凝土均采用自密实补偿收缩混凝土浇筑，自密实补偿收缩混凝土添加有聚丙烯抗裂纤维、抗离析剂、引气剂，在保证混凝土施工和易性(拓展度大于600mm)的前提下，更一步有效减少收缩裂缝的数量。另，引气剂的使用及压浆工艺，保证了新旧拱圈结合面的密实，提高了拱圈套拱质量。
Bridge pier body and arch ring reinforcing construction method
The invention relates to a bridge pier body and arch ring reinforcing construction method. According to the bridge pier body and arch ring reinforcing construction method, upper-section pier body outer wrapping concrete and arch ring sleeve arch concrete are poured synchronously, the age difference between an upper-section pier body outer wrapping concrete structure and an arch ring sleeve arch concrete structure is reduced, shrinkage creep of the concrete of the two structures is kept consistent, the number of shrinkage cracks of the concrete arch ring is effectively reduced, and the construction efficiency is improved. And the width and depth of the crack. The pier body outer wrapping concrete and the arch ring arch concrete are poured through self-compacting shrinkage-compensating concrete, polypropylene anti-crack fibers, an anti-segregation agent and an air entraining agent are added into the self-compacting shrinkage-compensating concrete, and on the premise that the concrete construction workability (the expansion degree is larger than 600 mm) is guaranteed, the number of shrinkage cracks is further effectively reduced. In addition, the use of the air entraining agent and the grouting process ensure the compactness of the junction surface of the new and old arch rings and improve the arch ring sleeving quality of the arch ring.
本发明涉及一种桥梁墩身与拱圈加固施工方法。所述桥梁墩身与拱圈加固施工方法中，上段墩身外包混凝土与拱圈套拱混凝土同步浇筑，缩小上段墩身外包混凝土结构与拱圈套拱混凝土结构的龄期差，保持两结构混凝土的收缩徐变一致，有效降低混凝土拱圈收缩裂缝的数量，以及裂缝的宽度、深度。所述墩身外包混凝土、拱圈套拱混凝土均采用自密实补偿收缩混凝土浇筑，自密实补偿收缩混凝土添加有聚丙烯抗裂纤维、抗离析剂、引气剂，在保证混凝土施工和易性(拓展度大于600mm)的前提下，更一步有效减少收缩裂缝的数量。另，引气剂的使用及压浆工艺，保证了新旧拱圈结合面的密实，提高了拱圈套拱质量。
Bridge pier body and arch ring reinforcing construction method
一种桥梁墩身与拱圈加固施工方法
JANG YU-YEON (author) / PENG SIRUI (author) / WANG YU'AN (author) / KANG LIANGRUI (author) / XIE MANTAO (author) / LI SHOUZHEN (author) / WANG SHULIN (author) / LI ZIKUN (author) / CHEN XIAOLI (author) / AI FENGMEI (author)
2023-10-10
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
| European Patent Office | 2023
Bridge pier body reinforcing method and reinforcing template
| European Patent Office | 2023
| European Patent Office | 2018
Bridge pier repairing and reinforcing construction method
| European Patent Office | 2021