Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for controlling deformation of bridge deck slab in transverse bridge direction during installation of steel-concrete composite beam cable-stayed bridge
The invention discloses a method for controlling deformation of a bridge deck slab in the transverse bridge direction during installation of a steel-concrete composite beam cable-stayed bridge. The method comprises the following steps: S1, calculating a beam section hoisting posture by adopting a finite element method; s2, hoisting a new hoisting beam section; s3, according to the lifting posture of the beam section, the web alignment tolerance is calculated; s4, the alignment tolerance of the web is corrected; s5, a new hoisting beam section inhaul cable is tensioned, and a supporting system of the new hoisting beam section is converted; and S6, a ballasting load is applied to the newly-lifted beam section till no height difference exists between the newly-lifted beam section and the occupied beam section of the deck crane, and bridge deck slab matching connection is conducted. The secondary stress of the bridge deck and the steel edge box web caused by forced deformation in the prior art can be effectively solved, the cracking risk of the bridge deck in matching and connecting is eliminated, the durability of the bridge deck is improved, and the flatness of the bridge deck is improved.
本发明公开了一种钢混组合梁斜拉桥安装中桥面板横桥向变形量的控制方法，包括S1、采用有限元法计算梁段起吊姿态；S2、起吊新起吊梁段；S3、根据梁段起吊姿态，计算腹板错边量；S4、对腹板错边量进行矫正处理；S5、张拉新起吊梁段拉索，转换新起吊梁段的支撑体系；S6、在新起吊梁段上施加压重荷载，直至新起吊梁段与桥面吊机占位梁段间无高差，并进行桥面板匹配连接。本发明可有效解决现有技术中由于强迫变形导致的桥面板和钢边箱腹板次生应力，消除匹配、连接中桥面板开裂风险，提高桥面板耐久性，提升桥面板平整度。
Method for controlling deformation of bridge deck slab in transverse bridge direction during installation of steel-concrete composite beam cable-stayed bridge
The invention discloses a method for controlling deformation of a bridge deck slab in the transverse bridge direction during installation of a steel-concrete composite beam cable-stayed bridge. The method comprises the following steps: S1, calculating a beam section hoisting posture by adopting a finite element method; s2, hoisting a new hoisting beam section; s3, according to the lifting posture of the beam section, the web alignment tolerance is calculated; s4, the alignment tolerance of the web is corrected; s5, a new hoisting beam section inhaul cable is tensioned, and a supporting system of the new hoisting beam section is converted; and S6, a ballasting load is applied to the newly-lifted beam section till no height difference exists between the newly-lifted beam section and the occupied beam section of the deck crane, and bridge deck slab matching connection is conducted. The secondary stress of the bridge deck and the steel edge box web caused by forced deformation in the prior art can be effectively solved, the cracking risk of the bridge deck in matching and connecting is eliminated, the durability of the bridge deck is improved, and the flatness of the bridge deck is improved.
本发明公开了一种钢混组合梁斜拉桥安装中桥面板横桥向变形量的控制方法，包括S1、采用有限元法计算梁段起吊姿态；S2、起吊新起吊梁段；S3、根据梁段起吊姿态，计算腹板错边量；S4、对腹板错边量进行矫正处理；S5、张拉新起吊梁段拉索，转换新起吊梁段的支撑体系；S6、在新起吊梁段上施加压重荷载，直至新起吊梁段与桥面吊机占位梁段间无高差，并进行桥面板匹配连接。本发明可有效解决现有技术中由于强迫变形导致的桥面板和钢边箱腹板次生应力，消除匹配、连接中桥面板开裂风险，提高桥面板耐久性，提升桥面板平整度。
Method for controlling deformation of bridge deck slab in transverse bridge direction during installation of steel-concrete composite beam cable-stayed bridge
钢混组合梁斜拉桥安装中桥面板横桥向变形量的控制方法
ZHAO CANHUI (Autor:in) / YANG YAN (Autor:in) / SHEN FENG (Autor:in) / TANG SHOUFENG (Autor:in) / YANG XINGWANG (Autor:in) / WANG RUIPENG (Autor:in) / LIU CHAOHUI (Autor:in) / LIU JING (Autor:in) / CHEN HUA (Autor:in) / HU LONGYONG (Autor:in)
22.08.2023
Patent
Elektronische Ressource
Chinesisch
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