Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention provides a segmented prestressed concrete-filled steel tube truss continuous combined bridge and a construction method thereof. The bridge comprises a segmented prestressed concrete-filled steel tube truss and concrete bridge deck slabs. The concrete-filled steel tube truss comprises a concrete-filled steel tube upper chord member, a concrete-filled steel tube lower chord member anda steel tube web member. Prestress is applied to the interiors of a bridge hogging moment area concrete-filled steel tube upper chord member and a hogging moment area concrete-filled steel tube lowerchord member, and the concrete-filled steel tube upper chord member and the upper concrete bridge deck slab are connected through shear connectors to form integration to work together. The characteristics that the concrete-filled steel tube tension chord member is suitable for applying prestress, and the concrete-filled steel tube compression chord member is high in bearing capacity and good in stability are comprehensively utilized; prestress is applied to the tensioned chord members in the hogging moment area, and prestress is applied to the tensioned chord members in the hogging moment area, so that the cracking risk of the concrete slab is reduced, the strength and rigidity of the section are improved, and thus ideal stress performance, construction performance and comprehensive economic indexes are obtained.
本发明提供了一种分段预应力钢管混凝土桁架连续组合桥梁及其施工方法，该桥梁包括分段预应力钢管混凝土桁架和混凝土桥面板，所述钢管混凝土桁架包括钢管混凝土上弦杆、钢管混凝土下弦杆和钢管腹杆，桥梁负弯矩区钢管混凝土上弦杆和正弯矩区钢管混凝土下弦杆内施加有预应力，钢管混凝土上弦杆通过抗剪连接件和上部混凝土桥面板连接形成整体共同工作。本发明通过综合利用钢管混凝土受拉弦杆适合施加预应力、钢管混凝土受压弦杆承载力高、稳定性好的各自优势的特点，通过在负弯矩区受拉弦杆施加预应力以及在正弯矩区受拉弦杆施加预应力，以减少混凝土板开裂风险并提高截面的强度和刚度，从而获得理想的受力性能、施工性能和综合经济指标。
The invention provides a segmented prestressed concrete-filled steel tube truss continuous combined bridge and a construction method thereof. The bridge comprises a segmented prestressed concrete-filled steel tube truss and concrete bridge deck slabs. The concrete-filled steel tube truss comprises a concrete-filled steel tube upper chord member, a concrete-filled steel tube lower chord member anda steel tube web member. Prestress is applied to the interiors of a bridge hogging moment area concrete-filled steel tube upper chord member and a hogging moment area concrete-filled steel tube lowerchord member, and the concrete-filled steel tube upper chord member and the upper concrete bridge deck slab are connected through shear connectors to form integration to work together. The characteristics that the concrete-filled steel tube tension chord member is suitable for applying prestress, and the concrete-filled steel tube compression chord member is high in bearing capacity and good in stability are comprehensively utilized; prestress is applied to the tensioned chord members in the hogging moment area, and prestress is applied to the tensioned chord members in the hogging moment area, so that the cracking risk of the concrete slab is reduced, the strength and rigidity of the section are improved, and thus ideal stress performance, construction performance and comprehensive economic indexes are obtained.
本发明提供了一种分段预应力钢管混凝土桁架连续组合桥梁及其施工方法，该桥梁包括分段预应力钢管混凝土桁架和混凝土桥面板，所述钢管混凝土桁架包括钢管混凝土上弦杆、钢管混凝土下弦杆和钢管腹杆，桥梁负弯矩区钢管混凝土上弦杆和正弯矩区钢管混凝土下弦杆内施加有预应力，钢管混凝土上弦杆通过抗剪连接件和上部混凝土桥面板连接形成整体共同工作。本发明通过综合利用钢管混凝土受拉弦杆适合施加预应力、钢管混凝土受压弦杆承载力高、稳定性好的各自优势的特点，通过在负弯矩区受拉弦杆施加预应力以及在正弯矩区受拉弦杆施加预应力，以减少混凝土板开裂风险并提高截面的强度和刚度，从而获得理想的受力性能、施工性能和综合经济指标。
Segmented prestressed concrete-filled steel tube truss continuous combined bridge and construction method thereof
分段预应力钢管混凝土桁架连续组合桥梁及其施工方法
18.09.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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