Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Corrugated steel web combined box girder hogging moment area prestress structure and construction method
The invention discloses a corrugated steel web combined box girder hogging moment area prestress structure and a construction method, the prestress structure comprises a box girder body, the box girder body is divided into a hogging moment area in the middle and sagging moment areas at the two ends in the shape direction, and a junction area is arranged between the hogging moment area and the sagging moment area; the two temporary anchoring parts are symmetrically mounted and arranged in the two junction areas; the two ends of the prestressed steel bar penetrate through the two temporary anchoring parts respectively, and the prestressed steel bar is parallel to the shape direction of the box girder body; and the jack is fixed on one temporary anchoring part, is connected with one end of the prestressed steel bar and applies axial tension to the prestressed steel bar, and the other end of the prestressed steel bar is fixedly connected with the other temporary anchoring part. According to the method, the prestressed reinforcement is tensioned before pouring, the prestress in the prestressed reinforcement is released after pouring, the prestress is applied to the concrete in the hogging moment area through deformation of the prestressed reinforcement, and consumption of the prestress on the corrugated steel web at the bottom is reduced.
本发明公开了一种波形钢腹板组合箱梁负弯矩区预应力结构及施工方法，预应力结构包括箱梁本体，其沿形体方向分为中部的负弯矩区和两端的正弯矩区，负弯矩区与正弯矩区间设置交界区；两个临时锚固件，其对称安装并设置在两个交界区；预应力钢筋，其两端分别穿过两个临时锚固件，预应力钢筋与箱梁本体的形体方向平行；千斤顶，其固定在其中一个临时锚固件，并与预应力钢筋的其中一端连接，向预应力钢筋施加轴向方向的拉力，预应力钢筋的另一端与另一个临时锚固件固定连接。本发明通过在浇注前对预应力钢筋进行张拉，并在浇注后释放预应力钢筋中的预应力，以预应力钢筋本身的形变对负弯矩区的混凝土施加预应力，减少对底部的波形钢腹板预应力的消耗。
Corrugated steel web combined box girder hogging moment area prestress structure and construction method
The invention discloses a corrugated steel web combined box girder hogging moment area prestress structure and a construction method, the prestress structure comprises a box girder body, the box girder body is divided into a hogging moment area in the middle and sagging moment areas at the two ends in the shape direction, and a junction area is arranged between the hogging moment area and the sagging moment area; the two temporary anchoring parts are symmetrically mounted and arranged in the two junction areas; the two ends of the prestressed steel bar penetrate through the two temporary anchoring parts respectively, and the prestressed steel bar is parallel to the shape direction of the box girder body; and the jack is fixed on one temporary anchoring part, is connected with one end of the prestressed steel bar and applies axial tension to the prestressed steel bar, and the other end of the prestressed steel bar is fixedly connected with the other temporary anchoring part. According to the method, the prestressed reinforcement is tensioned before pouring, the prestress in the prestressed reinforcement is released after pouring, the prestress is applied to the concrete in the hogging moment area through deformation of the prestressed reinforcement, and consumption of the prestress on the corrugated steel web at the bottom is reduced.
本发明公开了一种波形钢腹板组合箱梁负弯矩区预应力结构及施工方法，预应力结构包括箱梁本体，其沿形体方向分为中部的负弯矩区和两端的正弯矩区，负弯矩区与正弯矩区间设置交界区；两个临时锚固件，其对称安装并设置在两个交界区；预应力钢筋，其两端分别穿过两个临时锚固件，预应力钢筋与箱梁本体的形体方向平行；千斤顶，其固定在其中一个临时锚固件，并与预应力钢筋的其中一端连接，向预应力钢筋施加轴向方向的拉力，预应力钢筋的另一端与另一个临时锚固件固定连接。本发明通过在浇注前对预应力钢筋进行张拉，并在浇注后释放预应力钢筋中的预应力，以预应力钢筋本身的形变对负弯矩区的混凝土施加预应力，减少对底部的波形钢腹板预应力的消耗。
Corrugated steel web combined box girder hogging moment area prestress structure and construction method
一种波形钢腹板组合箱梁负弯矩区预应力结构及施工方法
XIE BING (Autor:in) / CHEN HONGBIN (Autor:in) / GUAN RUNRONG (Autor:in) / CHEN YIYAN (Autor:in) / GU JINYOU (Autor:in) / WANG JIAN (Autor:in) / ZHAO QIU (Autor:in) / QU YAN (Autor:in)
10.03.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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