Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Fabricated continuous T-beam bridge splicing section adopting UHPC shear keys and construction method
The invention relates to a fabricated continuous T-beam bridge splicing section adopting UHPC shear keys and a construction method, the T-beam bridge is composed of prefabricated T-beams, UHPC prefabricated slabs and UHPC cast-in-place slabs at the pier top splicing section, the multiple prefabricated slabs are connected through transverse prestressed reinforcements, and the cast-in-place slabs are located over the prefabricated slabs and connected through junction surface reinforcements; recessed shear key positions are arranged at the two ends of the top plate of the prefabricated T-shaped beams, pre-buried joint face steel bars are arranged on the top face of the top plate, and the cast-in-place plate and the prefabricated T-shaped beam are connected through UHPC shear keys, the joint face steel bars and longitudinal prestressed steel bars. The shear keys made of UHPC are arranged on the splicing sections of the continuous T-beam bridge so that the shear resistance of the splicing sections is improved. UHPC bearing is adopted in the hogging moment area of the continuous beam bridge, and structural stress is more reasonable. By the adoption of the construction scheme of factory prefabrication and field assembly, the defect that the construction precision of field pouring is not easy to achieve due to the fact that a large amount of cast-in-place is conducted originally and the structure is complex is overcome.
本发明涉及一种采用UHPC剪力键的装配式连续T梁桥拼接段及施工方法，所述T梁桥在墩顶拼接段由预制T梁、UHPC预制板和UHPC现浇板组成，多个预制板之间通过横向预应力钢筋连接，现浇板位于预制板正上方且通过结合面钢筋连接，预制T梁的顶板两端设有凹陷的剪力键位、顶板顶面设有预埋的结合面钢筋，现浇板和预制T梁通过UHPC剪力键、结合面钢筋和纵向预应力钢筋进行连接。通过在连续T梁桥的拼接段设置材质为UHPC的剪力键，提高拼接段的抗剪性能。在连续梁桥的负弯矩区域采用UHPC承载，结构受力更加合理。通过采用工厂预制、现场装配的施工方案，避免了原有进行大量现浇且构造复杂以致现场浇筑的施工精度不易达到的缺点。
Fabricated continuous T-beam bridge splicing section adopting UHPC shear keys and construction method
The invention relates to a fabricated continuous T-beam bridge splicing section adopting UHPC shear keys and a construction method, the T-beam bridge is composed of prefabricated T-beams, UHPC prefabricated slabs and UHPC cast-in-place slabs at the pier top splicing section, the multiple prefabricated slabs are connected through transverse prestressed reinforcements, and the cast-in-place slabs are located over the prefabricated slabs and connected through junction surface reinforcements; recessed shear key positions are arranged at the two ends of the top plate of the prefabricated T-shaped beams, pre-buried joint face steel bars are arranged on the top face of the top plate, and the cast-in-place plate and the prefabricated T-shaped beam are connected through UHPC shear keys, the joint face steel bars and longitudinal prestressed steel bars. The shear keys made of UHPC are arranged on the splicing sections of the continuous T-beam bridge so that the shear resistance of the splicing sections is improved. UHPC bearing is adopted in the hogging moment area of the continuous beam bridge, and structural stress is more reasonable. By the adoption of the construction scheme of factory prefabrication and field assembly, the defect that the construction precision of field pouring is not easy to achieve due to the fact that a large amount of cast-in-place is conducted originally and the structure is complex is overcome.
本发明涉及一种采用UHPC剪力键的装配式连续T梁桥拼接段及施工方法，所述T梁桥在墩顶拼接段由预制T梁、UHPC预制板和UHPC现浇板组成，多个预制板之间通过横向预应力钢筋连接，现浇板位于预制板正上方且通过结合面钢筋连接，预制T梁的顶板两端设有凹陷的剪力键位、顶板顶面设有预埋的结合面钢筋，现浇板和预制T梁通过UHPC剪力键、结合面钢筋和纵向预应力钢筋进行连接。通过在连续T梁桥的拼接段设置材质为UHPC的剪力键，提高拼接段的抗剪性能。在连续梁桥的负弯矩区域采用UHPC承载，结构受力更加合理。通过采用工厂预制、现场装配的施工方案，避免了原有进行大量现浇且构造复杂以致现场浇筑的施工精度不易达到的缺点。
Fabricated continuous T-beam bridge splicing section adopting UHPC shear keys and construction method
一种采用UHPC剪力键的装配式连续T梁桥拼接段及施工方法
ZHANG WENHAO (Autor:in) / WU QINGXIONG (Autor:in) / LIU FUZHONG (Autor:in) / JIN LONGFEI (Autor:in) / GUO BAOLIN (Autor:in) / FAN JUNYING (Autor:in) / HUANG WANKUN (Autor:in) / ZHANG HUANTAO (Autor:in) / LI GUANGQI (Autor:in) / JIANG RUISHUANG (Autor:in)
23.02.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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