Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Prestressed BFRP rib T-shaped superposed beam adopting pre-tensioning method and design method of prestressed BFRP rib T-shaped superposed beam
The invention provides a prestressed BFRP rib T-shaped superposed beam adopting a pre-tensioning method and a design method thereof.The prestressed BFRP rib T-shaped superposed beam adopting the pre-tensioning method comprises a precast beam and cast-in-place superposed layer concrete, the precast beam comprises a reinforcement cage and precast concrete, the reinforcement cage comprises a plurality of prestressed BFRP longitudinal ribs arranged at the bottom, and the precast concrete comprises a plurality of prestressed BFRP longitudinal ribs arranged at the bottom; the prestressed BFRP longitudinal bars are connected through a plurality of stirrups, the stirrups are arranged and distributed in the length direction of the prestressed BFRP longitudinal bars, the waist bars are arranged on the two sides of the stirrups and connected with the stirrups, the upper longitudinal bars are arranged at the tops of the stirrups, the precast concrete is distributed in the distribution area of the prestressed BFRP longitudinal bars and the waist bars, the upper portions of the stirrups penetrate out of the precast concrete, and the lower portions of the stirrups penetrate out of the precast concrete. The cast-in-place laminated layer concrete is poured on the upper side of the prefabricated concrete, and the upper longitudinal bars and the upper portions of the stirrups are embedded in the cast-in-place laminated layer concrete. According to the superposed beam and the design method thereof, the prestress technology is adopted, and the BFRP ribs are combined with the superposed beam, so that the problems caused by low elasticity modulus of the BFRP ribs are solved.
本发明提供一种采用先张法的预应力BFRP筋T型叠合梁及其设计方法，该采用先张法的预应力BFRP筋T型叠合梁，包括预制梁和现浇叠合层混凝土，预制梁包括钢筋笼和预制混凝土，钢筋笼包括设置在底部的若干预应力BFRP纵筋，预应力BFRP纵筋通过若干箍筋连接，箍筋沿预应力BFRP纵筋的长度排列分布，箍筋两侧设有腰筋，腰筋与各个箍筋相互连接，箍筋顶部设有上部纵筋，预制混凝土分布在预应力BFRP纵筋和腰筋分布区域，箍筋上部穿出预制混凝土，现浇叠合层混凝土浇注在预制混凝土上侧，上部纵筋和箍筋上部埋设在现浇叠合层混凝土内。该叠合梁及其设计方法预应力技术、BFRP筋与叠合梁相结合，解决BFRP筋弹性模量较低带来的问题。
Prestressed BFRP rib T-shaped superposed beam adopting pre-tensioning method and design method of prestressed BFRP rib T-shaped superposed beam
The invention provides a prestressed BFRP rib T-shaped superposed beam adopting a pre-tensioning method and a design method thereof.The prestressed BFRP rib T-shaped superposed beam adopting the pre-tensioning method comprises a precast beam and cast-in-place superposed layer concrete, the precast beam comprises a reinforcement cage and precast concrete, the reinforcement cage comprises a plurality of prestressed BFRP longitudinal ribs arranged at the bottom, and the precast concrete comprises a plurality of prestressed BFRP longitudinal ribs arranged at the bottom; the prestressed BFRP longitudinal bars are connected through a plurality of stirrups, the stirrups are arranged and distributed in the length direction of the prestressed BFRP longitudinal bars, the waist bars are arranged on the two sides of the stirrups and connected with the stirrups, the upper longitudinal bars are arranged at the tops of the stirrups, the precast concrete is distributed in the distribution area of the prestressed BFRP longitudinal bars and the waist bars, the upper portions of the stirrups penetrate out of the precast concrete, and the lower portions of the stirrups penetrate out of the precast concrete. The cast-in-place laminated layer concrete is poured on the upper side of the prefabricated concrete, and the upper longitudinal bars and the upper portions of the stirrups are embedded in the cast-in-place laminated layer concrete. According to the superposed beam and the design method thereof, the prestress technology is adopted, and the BFRP ribs are combined with the superposed beam, so that the problems caused by low elasticity modulus of the BFRP ribs are solved.
本发明提供一种采用先张法的预应力BFRP筋T型叠合梁及其设计方法，该采用先张法的预应力BFRP筋T型叠合梁，包括预制梁和现浇叠合层混凝土，预制梁包括钢筋笼和预制混凝土，钢筋笼包括设置在底部的若干预应力BFRP纵筋，预应力BFRP纵筋通过若干箍筋连接，箍筋沿预应力BFRP纵筋的长度排列分布，箍筋两侧设有腰筋，腰筋与各个箍筋相互连接，箍筋顶部设有上部纵筋，预制混凝土分布在预应力BFRP纵筋和腰筋分布区域，箍筋上部穿出预制混凝土，现浇叠合层混凝土浇注在预制混凝土上侧，上部纵筋和箍筋上部埋设在现浇叠合层混凝土内。该叠合梁及其设计方法预应力技术、BFRP筋与叠合梁相结合，解决BFRP筋弹性模量较低带来的问题。
Prestressed BFRP rib T-shaped superposed beam adopting pre-tensioning method and design method of prestressed BFRP rib T-shaped superposed beam
采用先张法的预应力BFRP筋T型叠合梁及其设计方法
WU XIAOYONG (Autor:in) / HU JILEI (Autor:in) / CHEN DENGHONG (Autor:in) / WANG YING (Autor:in) / CHEN XINGHUA (Autor:in) / ZHANG QI (Autor:in) / CHENG GAN (Autor:in) / YANG ZHONGXIANG (Autor:in) / CHEN SHAOJIE (Autor:in)
22.11.2022
Patent
Elektronische Ressource
Chinesisch
Thin-bottom groove type prestressed concrete superposed beam
| Europäisches Patentamt | 2021
Fatigue performance of prestressed concrete beams using BFRP bars
| British Library Online Contents | 2017