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UHPC + NC composite bridge deck in hogging moment area of steel-concrete composite beam
A steel-concrete composite beam hogging moment area UHPC + NC composite bridge deck comprises a UHPC ultra-high performance concrete layer and an NC common concrete layer, the NC common concrete layer is laid on a steel beam, and the UHPC ultra-high performance concrete layer is laid on the NC common concrete layer. The NC common concrete layer and the UHPC layer are both fixedly connected with the steel beam, the thickness of the UHPC layer and the thickness of the NC common concrete layer are the largest than tau at the middle supporting point, and tau is gradually reduced in the longitudinal direction of the bridge at the middle supporting point. According to the hogging moment area UHPC layer and NC common concrete layer laminated bridge deck based on the steel-concrete composite beam stress behavior and the steel-concrete interface behavior, the requirement for the bearing capacity and durability of the hogging moment area is met, meanwhile, the using amount of UHPC materials is reduced, and therefore the purpose of being more economical is achieved.
一种钢‑混凝土组合梁负弯矩区UHPC+NC叠合桥面板，所述叠合桥面板包括UHPC超高性能混凝土层和NC普通混凝土层，所述NC普通混凝土层铺设于钢梁上，所述UHPC超高性能混凝土层铺设于NC普通混凝土层上，NC普通混凝土层和UHPC超高性能混凝土层均与钢梁固定连接，所述UHPC超高性能混凝土层与NC普通混凝土层的厚度比τ在中支点处最大，且τ从中支点处沿着桥梁纵向方向逐渐减小。本发明提出一种基于钢‑混凝土组合梁受力行为及钢‑混界面行为的负弯矩区UHPC超高性能混凝土层+NC普通混凝土层叠合桥面板，在满足负弯矩区承载能力和耐久性要求的同时，减少UHPC材料的用量，以此达到更经济的目的。
UHPC + NC composite bridge deck in hogging moment area of steel-concrete composite beam
A steel-concrete composite beam hogging moment area UHPC + NC composite bridge deck comprises a UHPC ultra-high performance concrete layer and an NC common concrete layer, the NC common concrete layer is laid on a steel beam, and the UHPC ultra-high performance concrete layer is laid on the NC common concrete layer. The NC common concrete layer and the UHPC layer are both fixedly connected with the steel beam, the thickness of the UHPC layer and the thickness of the NC common concrete layer are the largest than tau at the middle supporting point, and tau is gradually reduced in the longitudinal direction of the bridge at the middle supporting point. According to the hogging moment area UHPC layer and NC common concrete layer laminated bridge deck based on the steel-concrete composite beam stress behavior and the steel-concrete interface behavior, the requirement for the bearing capacity and durability of the hogging moment area is met, meanwhile, the using amount of UHPC materials is reduced, and therefore the purpose of being more economical is achieved.
一种钢‑混凝土组合梁负弯矩区UHPC+NC叠合桥面板，所述叠合桥面板包括UHPC超高性能混凝土层和NC普通混凝土层，所述NC普通混凝土层铺设于钢梁上，所述UHPC超高性能混凝土层铺设于NC普通混凝土层上，NC普通混凝土层和UHPC超高性能混凝土层均与钢梁固定连接，所述UHPC超高性能混凝土层与NC普通混凝土层的厚度比τ在中支点处最大，且τ从中支点处沿着桥梁纵向方向逐渐减小。本发明提出一种基于钢‑混凝土组合梁受力行为及钢‑混界面行为的负弯矩区UHPC超高性能混凝土层+NC普通混凝土层叠合桥面板，在满足负弯矩区承载能力和耐久性要求的同时，减少UHPC材料的用量，以此达到更经济的目的。
UHPC + NC composite bridge deck in hogging moment area of steel-concrete composite beam
一种钢-混凝土组合梁负弯矩区UHPC+NC叠合桥面板
XU YAN (author) / LI JUN (author) / ZHU MENGJUN (author) / YU HAITANG (author) / WANG XIAOFENG (author) / HU ZHEN (author) / ZHENG JIANMIN (author) / SHENG KANG (author) / LI SHULIANG (author) / ZHAI FENG (author)
2021-09-10
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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