Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Prefabricated small box girder type hidden cover beam connected by prestressed steel beams and construction method of prefabricated small box girder type hidden cover beam
The invention discloses a prefabricated small box girder type hidden cover beam connected by prestressed steel beams and a construction method of the prefabricated small box girder type hidden cover beam. The prefabricated small box girder type hidden cover beam comprises a prefabricated small box girder, a cast-in-place hidden cover beam and a prestress system, a prefabricated-cast-in-place interface in a multi-protrusion tooth block meshing mode is arranged between the end of the prefabricated small box girder and the cast-in-place hidden cover beam, and the prestress system comprises an internal prestress system and an external prestress system. The internal prestress system comprises a plurality of internal prestress steel beams, and anchoring points of the internal prestress steel beams are arranged at the ends of the web of the prefabricated small box girder and distributed in the height direction of the web of the prefabricated small box girder. The external prestress system comprises a plurality of external prestress steel beams; and an inclination angle alpha is formed between each external prestress steel beam and the web of the prefabricated small box girder. Therefore, the overall height of a girder bridge can be increased, the requirement for insufficient local clearance of the bridge is met, and the problems of bearing capacity, deformation and durability between the prefabricated small box girder and the cast-in-place and cast-in-place hidden cover beam are effectively solved.
本发明公开了一种预应力钢束连接的预制小箱梁式隐盖梁及其施工方法。预制小箱梁式隐盖梁包括预制小箱梁、现浇隐式盖梁及预应力体系，预制小箱梁的端头与现浇隐式盖梁之间具有呈多突式齿块咬合的预制‑现浇界面，预应力体系包括体内预应力体系以及体外预应力体系；体内预应力体系包括若干根体内预应力钢束，各体内预应力钢束的锚固点均设置于预制小箱梁的腹板端部并沿着预制小箱梁的腹板高度方向分布；体外预应力体系包括若干根体外预应力钢束；各体外预应力钢束与预制小箱梁的腹板之间存在倾角α。由此可知，本发明可以提升高架整体高度，满足桥梁局部净空不足，并有效地解决了预制小箱梁与现浇现浇隐式盖梁之间的承载力、变形及耐久性问题。
Prefabricated small box girder type hidden cover beam connected by prestressed steel beams and construction method of prefabricated small box girder type hidden cover beam
The invention discloses a prefabricated small box girder type hidden cover beam connected by prestressed steel beams and a construction method of the prefabricated small box girder type hidden cover beam. The prefabricated small box girder type hidden cover beam comprises a prefabricated small box girder, a cast-in-place hidden cover beam and a prestress system, a prefabricated-cast-in-place interface in a multi-protrusion tooth block meshing mode is arranged between the end of the prefabricated small box girder and the cast-in-place hidden cover beam, and the prestress system comprises an internal prestress system and an external prestress system. The internal prestress system comprises a plurality of internal prestress steel beams, and anchoring points of the internal prestress steel beams are arranged at the ends of the web of the prefabricated small box girder and distributed in the height direction of the web of the prefabricated small box girder. The external prestress system comprises a plurality of external prestress steel beams; and an inclination angle alpha is formed between each external prestress steel beam and the web of the prefabricated small box girder. Therefore, the overall height of a girder bridge can be increased, the requirement for insufficient local clearance of the bridge is met, and the problems of bearing capacity, deformation and durability between the prefabricated small box girder and the cast-in-place and cast-in-place hidden cover beam are effectively solved.
本发明公开了一种预应力钢束连接的预制小箱梁式隐盖梁及其施工方法。预制小箱梁式隐盖梁包括预制小箱梁、现浇隐式盖梁及预应力体系，预制小箱梁的端头与现浇隐式盖梁之间具有呈多突式齿块咬合的预制‑现浇界面，预应力体系包括体内预应力体系以及体外预应力体系；体内预应力体系包括若干根体内预应力钢束，各体内预应力钢束的锚固点均设置于预制小箱梁的腹板端部并沿着预制小箱梁的腹板高度方向分布；体外预应力体系包括若干根体外预应力钢束；各体外预应力钢束与预制小箱梁的腹板之间存在倾角α。由此可知，本发明可以提升高架整体高度，满足桥梁局部净空不足，并有效地解决了预制小箱梁与现浇现浇隐式盖梁之间的承载力、变形及耐久性问题。
Prefabricated small box girder type hidden cover beam connected by prestressed steel beams and construction method of prefabricated small box girder type hidden cover beam
预应力钢束连接的预制小箱梁式隐盖梁及其施工方法
XU SHENGLIANG (Autor:in) / CHEN JUFENG (Autor:in) / XI KANG (Autor:in)
19.10.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
Prefabricated small box girder hidden cover beam connected by prestressed steel beams
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