A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Hybrid beam partial cable-stayed bridge steel box beam hoisting low-stress closure method
The invention discloses a hybrid beam partial cable-stayed bridge steel box beam hoisting low-stress closure method. The method comprises the steps that external prestressing tendons are installed at the two folding ends or the outer sides of a to-be-folded area of the steel box girder; the external prestressing tendon penetrates through the steel box girder; and the external prestressing tendons apply acting force to the steel box girder until the steel box girder reaches a preset degree. By arranging the external prestressing tendons temporarily used for construction, the external prestressing tendons penetrate through the integrally-hoisted steel box girder box, and by tensioning the external prestressing tendons, vertical force is applied to the midspan of the steel box girder, the stress of the steel box girder is improved, the end corner of the steel box girder at the closure opening is adjusted, and closure construction is facilitated.
本申请公开了一种混合梁部分斜拉桥钢箱梁吊装低应力合拢方法。该方法包括：在钢箱梁待合拢区域的二合拢端或其外侧安装体外预应力束；使体外预应力束贯穿钢箱梁；使体外预应力束对钢箱梁施加作用力，直至钢箱梁达到预定程度。通过设置施工临时用的体外预应力束，体外预应力束穿过整体吊装的钢箱梁箱，并通过张拉体外预应力束，对钢箱梁跨中施加竖向力，改善钢箱梁应力并调整合拢口钢箱梁端部转角，方便合拢施工。
Hybrid beam partial cable-stayed bridge steel box beam hoisting low-stress closure method
The invention discloses a hybrid beam partial cable-stayed bridge steel box beam hoisting low-stress closure method. The method comprises the steps that external prestressing tendons are installed at the two folding ends or the outer sides of a to-be-folded area of the steel box girder; the external prestressing tendon penetrates through the steel box girder; and the external prestressing tendons apply acting force to the steel box girder until the steel box girder reaches a preset degree. By arranging the external prestressing tendons temporarily used for construction, the external prestressing tendons penetrate through the integrally-hoisted steel box girder box, and by tensioning the external prestressing tendons, vertical force is applied to the midspan of the steel box girder, the stress of the steel box girder is improved, the end corner of the steel box girder at the closure opening is adjusted, and closure construction is facilitated.
本申请公开了一种混合梁部分斜拉桥钢箱梁吊装低应力合拢方法。该方法包括：在钢箱梁待合拢区域的二合拢端或其外侧安装体外预应力束；使体外预应力束贯穿钢箱梁；使体外预应力束对钢箱梁施加作用力，直至钢箱梁达到预定程度。通过设置施工临时用的体外预应力束，体外预应力束穿过整体吊装的钢箱梁箱，并通过张拉体外预应力束，对钢箱梁跨中施加竖向力，改善钢箱梁应力并调整合拢口钢箱梁端部转角，方便合拢施工。
Hybrid beam partial cable-stayed bridge steel box beam hoisting low-stress closure method
一种混合梁部分斜拉桥钢箱梁吊装低应力合拢方法
LIU YANG (author) / GAO YUEFENG (author) / LI JUN (author) / ZHAI FENG (author) / DING BANGZHENG (author) / ZHU MENGJUN (author) / CHENG YONGNING (author) / ZHENG JIANMIN (author) / YU HAITANG (author) / XU YAN (author)
2023-06-23
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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