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A platform for research: civil engineering, architecture and urbanism
UHPFRC combined steel bridge deck slab adopting bamboo joint type cold connection keys
The invention discloses a UHPFRC combined steel bridge deck adopting bamboo joint type cold connecting keys. The UHPFRC combined steel bridge deck adopting the bamboo joint type cold connecting keys comprises the following construction steps that S1, the connecting keys are pre-cooled; s2, a top plate of the steel bridge deck is subjected to dust removal and cleaning through a high-pressure air gun; s3, cold connecting keys are arranged on a top plate of the steel bridge deck, the longitudinal distance between every two adjacent cold connecting keys is 30-50 cm, and the transverse distance between every two adjacent cold connecting keys is 30-50 cm; s4, an ultra-high-performance cement-based composite material layer is poured on the steel bridge deck top plate and the cold connection keys; the combined steel bridge deck is simple in structure and clear in stress, the bamboo joint type cold connecting keys are used in a steel-concrete combined structure, the contact area of the connecting keys and concrete is increased, stress concentration between the connecting keys and the concrete can be remarkably reduced, meanwhile, the connecting keys have 360-degree universal shearing resistance, the shearing resistance adaptability is good, the drawing resistance performance is good, and the service life is long. And when the composite material is matched with the polyformaldehyde fiber or the hybrid fiber UHPFRC for use, the composite rigidity of the composite structure can be remarkably improved, and the fatigue performance of the steel bridge deck is improved.
一种采用竹节式冷连接键的UHPFRC组合钢桥面板，包括以下施工步骤：S1、预制冷连接键；S2、对钢桥面板顶板采用高压气枪进行除尘、清洁；S3、在钢桥面板顶板上设置冷连接键，相邻冷连接键之间的纵向距离为30～50cm，横向距离为30～50cm；S4、在钢桥面板顶板和冷连接键上浇筑超高性能水泥基复合材料层；本发明的组合钢桥面板结构简单、受力明确，竹节式冷连接键用于钢‑混组合结构中，增大了连接键与混凝土的接触面积，可显著降低连接键与混凝土之间的应力集中，同时连接键具备360度万向抗剪，抗剪适应性好，抗拉拔性能好，连接可靠等优势，与共聚甲醛纤维或混杂纤维UHPFRC搭配使用，可显著提高组合结构组合刚度，提升钢桥面板的疲劳性能。
UHPFRC combined steel bridge deck slab adopting bamboo joint type cold connection keys
The invention discloses a UHPFRC combined steel bridge deck adopting bamboo joint type cold connecting keys. The UHPFRC combined steel bridge deck adopting the bamboo joint type cold connecting keys comprises the following construction steps that S1, the connecting keys are pre-cooled; s2, a top plate of the steel bridge deck is subjected to dust removal and cleaning through a high-pressure air gun; s3, cold connecting keys are arranged on a top plate of the steel bridge deck, the longitudinal distance between every two adjacent cold connecting keys is 30-50 cm, and the transverse distance between every two adjacent cold connecting keys is 30-50 cm; s4, an ultra-high-performance cement-based composite material layer is poured on the steel bridge deck top plate and the cold connection keys; the combined steel bridge deck is simple in structure and clear in stress, the bamboo joint type cold connecting keys are used in a steel-concrete combined structure, the contact area of the connecting keys and concrete is increased, stress concentration between the connecting keys and the concrete can be remarkably reduced, meanwhile, the connecting keys have 360-degree universal shearing resistance, the shearing resistance adaptability is good, the drawing resistance performance is good, and the service life is long. And when the composite material is matched with the polyformaldehyde fiber or the hybrid fiber UHPFRC for use, the composite rigidity of the composite structure can be remarkably improved, and the fatigue performance of the steel bridge deck is improved.
一种采用竹节式冷连接键的UHPFRC组合钢桥面板，包括以下施工步骤：S1、预制冷连接键；S2、对钢桥面板顶板采用高压气枪进行除尘、清洁；S3、在钢桥面板顶板上设置冷连接键，相邻冷连接键之间的纵向距离为30～50cm，横向距离为30～50cm；S4、在钢桥面板顶板和冷连接键上浇筑超高性能水泥基复合材料层；本发明的组合钢桥面板结构简单、受力明确，竹节式冷连接键用于钢‑混组合结构中，增大了连接键与混凝土的接触面积，可显著降低连接键与混凝土之间的应力集中，同时连接键具备360度万向抗剪，抗剪适应性好，抗拉拔性能好，连接可靠等优势，与共聚甲醛纤维或混杂纤维UHPFRC搭配使用，可显著提高组合结构组合刚度，提升钢桥面板的疲劳性能。
UHPFRC combined steel bridge deck slab adopting bamboo joint type cold connection keys
一种采用竹节式冷连接键的UHPFRC组合钢桥面板
WANG CHUNSHENG (author) / DUAN LAN (author) / ZHANG YANG (author)
2023-07-18
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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