A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Partial unbonded grouting corrugated pipe prefabricating, assembling and connecting structure and construction method
The invention relates to a partial unbonded grouting corrugated pipe prefabricating, assembling and connecting structure and a construction method, the partial unbonded grouting corrugated pipe prefabricating, assembling and connecting structure comprises a main rib, a metal corrugated pipe and a sleeve, wherein the end parts of the main rib need to be anchored in the bearing platform or the bentcap; the metal corrugated pipe is pre-buried in the bearing platform or the bent cap, and the metal corrugated pipe is filled with dense filler in a pressed mode to achieve anchoring connection with the main reinforcements. Main ribs of a certain length, close to the joint side, in the metal corrugated pipe are coated with anti-corrosion lubricating grease, the metal corrugated pipe is sleeved with sleeves of the corresponding length, the two ends of each sleeve are subjected to water sealing treatment through flexible sealant, spring clamps are adopted for fixing before bridge pier pouring, and therefore main rib non-bonding sections are formed on the main ribs. Compared with the prior art, stress concentration at the joint can be relieved, the yield length of the main ribs around the joint is increased, the ductility and the energy dissipation capacity of the prefabricated assembled pier are improved, meanwhile, the strain rate of the main ribs at the joint is reduced, and the fatigue performance is improved; the whole connecting structure is simple in construction, easy to operate, high in economical efficiency and convenient to apply and popularize.
本发明涉及一种部分无粘结灌浆波纹管预制拼装连接结构及施工方法，包括主筋、金属波纹管和套管，其中主筋端部需锚固于承台或盖梁中；金属波纹管预埋于承台或盖梁中，金属波纹管内部压填有密实填料实现与主筋的锚固连接；金属波纹管中靠近接缝侧一定长度的主筋涂覆有防腐润滑脂，外套相应长度的套管，并在套管两端用柔性密封胶作水封处理，且在桥墩浇筑前采用弹簧夹进行固定，以此在主筋上构成主筋无粘结段。与现有技术相比，本发明可缓解接缝处的应力集中，使接缝周围主筋屈服长度延长，提高预制拼装桥墩的延性性能和耗能能力，同时降低主筋在接缝处的应变率，提高疲劳性能；整个连接结构施工简单，易于操作，经济性强，便于推广和应用。
Partial unbonded grouting corrugated pipe prefabricating, assembling and connecting structure and construction method
The invention relates to a partial unbonded grouting corrugated pipe prefabricating, assembling and connecting structure and a construction method, the partial unbonded grouting corrugated pipe prefabricating, assembling and connecting structure comprises a main rib, a metal corrugated pipe and a sleeve, wherein the end parts of the main rib need to be anchored in the bearing platform or the bentcap; the metal corrugated pipe is pre-buried in the bearing platform or the bent cap, and the metal corrugated pipe is filled with dense filler in a pressed mode to achieve anchoring connection with the main reinforcements. Main ribs of a certain length, close to the joint side, in the metal corrugated pipe are coated with anti-corrosion lubricating grease, the metal corrugated pipe is sleeved with sleeves of the corresponding length, the two ends of each sleeve are subjected to water sealing treatment through flexible sealant, spring clamps are adopted for fixing before bridge pier pouring, and therefore main rib non-bonding sections are formed on the main ribs. Compared with the prior art, stress concentration at the joint can be relieved, the yield length of the main ribs around the joint is increased, the ductility and the energy dissipation capacity of the prefabricated assembled pier are improved, meanwhile, the strain rate of the main ribs at the joint is reduced, and the fatigue performance is improved; the whole connecting structure is simple in construction, easy to operate, high in economical efficiency and convenient to apply and popularize.
本发明涉及一种部分无粘结灌浆波纹管预制拼装连接结构及施工方法，包括主筋、金属波纹管和套管，其中主筋端部需锚固于承台或盖梁中；金属波纹管预埋于承台或盖梁中，金属波纹管内部压填有密实填料实现与主筋的锚固连接；金属波纹管中靠近接缝侧一定长度的主筋涂覆有防腐润滑脂，外套相应长度的套管，并在套管两端用柔性密封胶作水封处理，且在桥墩浇筑前采用弹簧夹进行固定，以此在主筋上构成主筋无粘结段。与现有技术相比，本发明可缓解接缝处的应力集中，使接缝周围主筋屈服长度延长，提高预制拼装桥墩的延性性能和耗能能力，同时降低主筋在接缝处的应变率，提高疲劳性能；整个连接结构施工简单，易于操作，经济性强，便于推广和应用。
Partial unbonded grouting corrugated pipe prefabricating, assembling and connecting structure and construction method
一种部分无粘结灌浆波纹管预制拼装连接结构及施工方法
WANG ZHIQIANG (author) / ZHANG PENGHUI (author) / LYU HAO (author) / WU CHENGJUN (author) / ZHANG JIYAN (author) / HAO CHENYU (author) / WEI HONGYI (author)
2021-01-26
Patent
Electronic Resource
Chinese
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