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A platform for research: civil engineering, architecture and urbanism
Stable prefabricated reinforced concrete pier column segment spliced pier system and construction method thereof
The invention discloses a stable prefabricated reinforced concrete pier column segment spliced pier system and a construction method thereof. A connecting node comprises an upper prefabricated pier column segment, a lower prefabricated pier column segment, annular steel bars, annular acrylic plates and temporary supports. In the three reinforced connection nodes, an annular steel plate is pre-buried at the top of a prefabricated pier column, the annular steel plate is connected with a reinforcement cage in the pier column in a welded mode, an annular steel plate is reserved on the lower portion of the prefabricated pier column, and grouting openings and grout outlet holes need to be reserved in the annular steel plates on the inner wall and the outer wall or the two-way FRP plates. The annular reinforcing steel bar adopts a form that inner and outer longitudinal bars integrally form a ring or the inner and outer longitudinal bars independently form a ring; the upper and lower sections of the prefabricated bridge pier can adopt profile steel or prefabricated concrete convex blocks as temporary supports; a high-strength high-flow-state grouting material is poured between the upper section and the lower section of the prefabricated pier column. According to the prefabricated pier column connecting joint, formwork-free construction of the joint can be achieved, foundation type connection and reinforced connection can be achieved according to the bridge earthquake fortification grade, the connecting joint stress requirement and the like, and the prefabricated pier column connecting joint design and construction requirement based on the performance requirement is met.
本发明公开了一种稳定型预制钢筋混凝土墩柱节段拼装桥墩体系及其施工方法，该连接节点包括预制墩柱上、下节段、环形钢筋、环形亚克力板、临时支撑；三种加强型连接节点中，预制墩柱顶部预埋环形钢板，环形钢板与墩柱内钢筋笼焊接连接，预制墩柱下部预留环形钢板，内外壁环形钢板或双向FRP板均需预留注浆口和出浆孔；环形钢筋采用内外侧纵筋整体成环或内外侧纵筋单独成环的形式；预制桥墩上下节段可采用型钢或预制混凝土凸出块作为临时支撑；预制墩柱上下节段之间浇筑高强度高流态灌浆料。本发明不仅能实现节点无支模施工，还能根据桥梁抗震设防等级及连接节点受力需求等实现基础型连接和加强型连接，达到基于性能需求的预制墩柱连接节点设计与施工要求。
Stable prefabricated reinforced concrete pier column segment spliced pier system and construction method thereof
The invention discloses a stable prefabricated reinforced concrete pier column segment spliced pier system and a construction method thereof. A connecting node comprises an upper prefabricated pier column segment, a lower prefabricated pier column segment, annular steel bars, annular acrylic plates and temporary supports. In the three reinforced connection nodes, an annular steel plate is pre-buried at the top of a prefabricated pier column, the annular steel plate is connected with a reinforcement cage in the pier column in a welded mode, an annular steel plate is reserved on the lower portion of the prefabricated pier column, and grouting openings and grout outlet holes need to be reserved in the annular steel plates on the inner wall and the outer wall or the two-way FRP plates. The annular reinforcing steel bar adopts a form that inner and outer longitudinal bars integrally form a ring or the inner and outer longitudinal bars independently form a ring; the upper and lower sections of the prefabricated bridge pier can adopt profile steel or prefabricated concrete convex blocks as temporary supports; a high-strength high-flow-state grouting material is poured between the upper section and the lower section of the prefabricated pier column. According to the prefabricated pier column connecting joint, formwork-free construction of the joint can be achieved, foundation type connection and reinforced connection can be achieved according to the bridge earthquake fortification grade, the connecting joint stress requirement and the like, and the prefabricated pier column connecting joint design and construction requirement based on the performance requirement is met.
本发明公开了一种稳定型预制钢筋混凝土墩柱节段拼装桥墩体系及其施工方法，该连接节点包括预制墩柱上、下节段、环形钢筋、环形亚克力板、临时支撑；三种加强型连接节点中，预制墩柱顶部预埋环形钢板，环形钢板与墩柱内钢筋笼焊接连接，预制墩柱下部预留环形钢板，内外壁环形钢板或双向FRP板均需预留注浆口和出浆孔；环形钢筋采用内外侧纵筋整体成环或内外侧纵筋单独成环的形式；预制桥墩上下节段可采用型钢或预制混凝土凸出块作为临时支撑；预制墩柱上下节段之间浇筑高强度高流态灌浆料。本发明不仅能实现节点无支模施工，还能根据桥梁抗震设防等级及连接节点受力需求等实现基础型连接和加强型连接，达到基于性能需求的预制墩柱连接节点设计与施工要求。
Stable prefabricated reinforced concrete pier column segment spliced pier system and construction method thereof
一种稳定型预制钢筋混凝土墩柱节段拼装桥墩体系及其施工方法
FENG HU (author) / ZHANG CHONGBIN (author) / FAN JIAJUN (author) / LI HUI (author) / XU SHENGQIAO (author) / YU ZHENYUN (author) / CUI WENKAI (author) / JIAO YAMENG (author) / CHU LIUSHENG (author) / ZHANG JINGWEI (author)
2024-05-28
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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