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Three-stage prestressed concrete composite flexural member
The invention discloses a three-stage prestressed concrete composite flexural member which is a beam member capable of crossing deep valleys, rivers and bays without a support. The component is characterized by consisting of six parts, namely a first-stage beam body, a first-stage prestressed tendon, a second-stage beam body, a second-stage prestressed tendon, a third-stage beam body and a third-stage prestressed tendon. First-stage and second-stage beam bodies and prestressed tendons thereof are prefabricated and tensioned in a factory or a construction site, and a stable foundation platform is arranged at the lower parts of the beam bodies; the third-stage beam body and prestress thereof are poured and tensioned on the construction site, and no support is arranged on the lower portion of the beam body in the construction period. Prestress acts on beam bodies with different periods and different section rigidities by stages, so that the beam bodies in different periods can meet stress and deformation requirements after being loaded, and particularly, the beam bodies can complete spanning construction without being provided with supports.
本发明公开一种三期预应力混凝土复合受弯构件，是一种能够不设置支撑即可以跨越深谷、河流、海湾的梁体构件。其特征在于，该构件由一期梁体、一期预应力筋、二期梁体、二期预应力筋、三期梁体、三期预应力筋等6部分组成。一期、二期梁体及其预应力筋在工厂或施工现场预制和张拉，梁体下部设置稳定基础平台；三期梁体及其预应力在施工现场浇筑和张拉，施工期梁体下部不设置支撑。将预应力分期作用于不同期、不同截面刚度的梁体上，能使不同阶段梁体受荷后满足应力与变形要求，特别是能使梁体不设支撑即能完成跨越施工。
Three-stage prestressed concrete composite flexural member
The invention discloses a three-stage prestressed concrete composite flexural member which is a beam member capable of crossing deep valleys, rivers and bays without a support. The component is characterized by consisting of six parts, namely a first-stage beam body, a first-stage prestressed tendon, a second-stage beam body, a second-stage prestressed tendon, a third-stage beam body and a third-stage prestressed tendon. First-stage and second-stage beam bodies and prestressed tendons thereof are prefabricated and tensioned in a factory or a construction site, and a stable foundation platform is arranged at the lower parts of the beam bodies; the third-stage beam body and prestress thereof are poured and tensioned on the construction site, and no support is arranged on the lower portion of the beam body in the construction period. Prestress acts on beam bodies with different periods and different section rigidities by stages, so that the beam bodies in different periods can meet stress and deformation requirements after being loaded, and particularly, the beam bodies can complete spanning construction without being provided with supports.
本发明公开一种三期预应力混凝土复合受弯构件，是一种能够不设置支撑即可以跨越深谷、河流、海湾的梁体构件。其特征在于，该构件由一期梁体、一期预应力筋、二期梁体、二期预应力筋、三期梁体、三期预应力筋等6部分组成。一期、二期梁体及其预应力筋在工厂或施工现场预制和张拉，梁体下部设置稳定基础平台；三期梁体及其预应力在施工现场浇筑和张拉，施工期梁体下部不设置支撑。将预应力分期作用于不同期、不同截面刚度的梁体上，能使不同阶段梁体受荷后满足应力与变形要求，特别是能使梁体不设支撑即能完成跨越施工。
Three-stage prestressed concrete composite flexural member
三期预应力混凝土复合受弯构件
WANG XINGCHAO (author)
2023-01-06
Patent
Electronic Resource
Chinese
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