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A platform for research: civil engineering, architecture and urbanism
Combined underwater bridge pile foundation and construction method thereof
The invention discloses a combined underwater bridge pile foundation and a construction method thereof, and relates to the technical field of bridge engineering. The method comprises the following steps: manufacturing a reinforcement cage of the cast-in-situ bored pile, prefabricating each section of the prestressed concrete hollow pipe, drilling, lowering the reinforcement cage, pouring to form the cast-in-situ bored pile, splicing each section of the prestressed concrete hollow pipe section by section, pulling and tensioning, and inversely grouting. And concrete is poured at the connecting position of the cast-in-situ bored pile and the prestressed concrete hollow pipe, and after a bearing platform is arranged, steel bars are connected and concrete is poured. The pile foundation comprises a cast-in-place cast-in-situ bored pile, a pre-stressed concrete hollow pipe which is prefabricated and assembled on the cast-in-situ bored pile in sections, and a post-cast concrete section which is formed by pouring concrete at the joint of the cast-in-situ bored pile and the pre-stressed concrete hollow pipe, and a steel casing is pulled out. The advantages of the cast-in-place pile and the precast pile are utilized, and the problems that concrete of the underwater exposed pile section of the underwater bridge pile foundation pile is prone to peeling off, steel bars are prone to rusting, and coarse aggregate is exposed are effectively solved.
本发明公开了一种组合式水中桥梁桩基及其施工方法，涉及桥梁工程技术领域，该方法包括：钻孔灌注桩的钢筋笼的制作以及预应力混凝土空心管各节段的预制、钻孔、下放钢筋笼并浇筑形成钻孔灌注桩、分节段拼装预应力混凝土空心管的各节段、穿束张拉、倒灌浆、在钻孔灌注桩与预应力混凝土空心管的连接部位浇筑混凝土、设置承台后连接钢筋并浇筑混凝土。该桩基包括现场浇筑的钻孔灌注桩、预制并节段拼装在钻孔灌注桩上的预应力混凝土空心管以及在钻孔灌注桩和预应力混凝土空心管的连接处浇筑混凝土形成的后浇混凝土段、拔出钢护筒。利用了现浇桩和预制桩的优势，有效解决水中桥梁桩基桩水中外露桩段混凝土易剥落、钢筋易锈蚀、粗骨料外露等病害。
Combined underwater bridge pile foundation and construction method thereof
The invention discloses a combined underwater bridge pile foundation and a construction method thereof, and relates to the technical field of bridge engineering. The method comprises the following steps: manufacturing a reinforcement cage of the cast-in-situ bored pile, prefabricating each section of the prestressed concrete hollow pipe, drilling, lowering the reinforcement cage, pouring to form the cast-in-situ bored pile, splicing each section of the prestressed concrete hollow pipe section by section, pulling and tensioning, and inversely grouting. And concrete is poured at the connecting position of the cast-in-situ bored pile and the prestressed concrete hollow pipe, and after a bearing platform is arranged, steel bars are connected and concrete is poured. The pile foundation comprises a cast-in-place cast-in-situ bored pile, a pre-stressed concrete hollow pipe which is prefabricated and assembled on the cast-in-situ bored pile in sections, and a post-cast concrete section which is formed by pouring concrete at the joint of the cast-in-situ bored pile and the pre-stressed concrete hollow pipe, and a steel casing is pulled out. The advantages of the cast-in-place pile and the precast pile are utilized, and the problems that concrete of the underwater exposed pile section of the underwater bridge pile foundation pile is prone to peeling off, steel bars are prone to rusting, and coarse aggregate is exposed are effectively solved.
本发明公开了一种组合式水中桥梁桩基及其施工方法，涉及桥梁工程技术领域，该方法包括：钻孔灌注桩的钢筋笼的制作以及预应力混凝土空心管各节段的预制、钻孔、下放钢筋笼并浇筑形成钻孔灌注桩、分节段拼装预应力混凝土空心管的各节段、穿束张拉、倒灌浆、在钻孔灌注桩与预应力混凝土空心管的连接部位浇筑混凝土、设置承台后连接钢筋并浇筑混凝土。该桩基包括现场浇筑的钻孔灌注桩、预制并节段拼装在钻孔灌注桩上的预应力混凝土空心管以及在钻孔灌注桩和预应力混凝土空心管的连接处浇筑混凝土形成的后浇混凝土段、拔出钢护筒。利用了现浇桩和预制桩的优势，有效解决水中桥梁桩基桩水中外露桩段混凝土易剥落、钢筋易锈蚀、粗骨料外露等病害。
Combined underwater bridge pile foundation and construction method thereof
一种组合式水中桥梁桩基及其施工方法
SONG CHUNXIA (author) / ZHANG XUEFENG (author) / NI YINGSHENG (author)
2023-08-04
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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