Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Dismantling method of double-layer swivel bridge construction supporting bracket
The invention discloses a dismantling method for a double-layer swivel bridge construction supporting bracket, which comprises the following steps of: after the pouring construction of a lower concrete beam is finished, slowly and symmetrically dismantling a template and a bracket in the direction from the midspan to the beam end, and simultaneously unloading in the transverse direction; after all the formworks and the supports are dismantled, the steel pipe supports are unloaded in a multi-point and grading mode, the steel pipe supports are dismantled from the midspan to the two ends at intervals, and the steel pipe supports in the same row are synchronously unloaded through a sand box and a jack. Natural downwarping of the bridge cantilever structure is completely completed, and the longitudinal anti-overturning stability of the cantilever structure in the whole unloading process is guaranteed; the swivel anti-overturning temporary steel support is installed, theoretically, the temporary steel support is not stressed, when unbalanced bending moment is generated at the two ends of the beam, the temporary steel support is stressed to offset the unbalanced bending moment, and construction safety is guaranteed.
本发明公开一种双层转体桥梁施工支撑支架的拆除方法，在下层混凝土梁浇筑施工完成后，由跨中至梁端方向，缓慢、对称拆除模板及支架，横向应同时卸落；拆除全部模板及支架后，多点、分级对钢管支撑进行卸载，钢管支撑拆除由跨中向两端对称隔一拆一，同排钢管支撑采用沙箱+千斤顶同步卸载，采用本发明技术方案的有益效果是：随着全部钢管支撑的依次拆除，使得桥梁悬臂结构自然下挠全部发生完成，保证了整个卸载过程中悬臂结构的纵向抗倾覆稳定性；安装转体防倾覆临时钢支撑，理论上临时钢支撑不受力，当梁的两端产生不平衡弯矩时临时钢支撑受力抵消此部分力，确保了施工安全。
Dismantling method of double-layer swivel bridge construction supporting bracket
The invention discloses a dismantling method for a double-layer swivel bridge construction supporting bracket, which comprises the following steps of: after the pouring construction of a lower concrete beam is finished, slowly and symmetrically dismantling a template and a bracket in the direction from the midspan to the beam end, and simultaneously unloading in the transverse direction; after all the formworks and the supports are dismantled, the steel pipe supports are unloaded in a multi-point and grading mode, the steel pipe supports are dismantled from the midspan to the two ends at intervals, and the steel pipe supports in the same row are synchronously unloaded through a sand box and a jack. Natural downwarping of the bridge cantilever structure is completely completed, and the longitudinal anti-overturning stability of the cantilever structure in the whole unloading process is guaranteed; the swivel anti-overturning temporary steel support is installed, theoretically, the temporary steel support is not stressed, when unbalanced bending moment is generated at the two ends of the beam, the temporary steel support is stressed to offset the unbalanced bending moment, and construction safety is guaranteed.
本发明公开一种双层转体桥梁施工支撑支架的拆除方法，在下层混凝土梁浇筑施工完成后，由跨中至梁端方向，缓慢、对称拆除模板及支架，横向应同时卸落；拆除全部模板及支架后，多点、分级对钢管支撑进行卸载，钢管支撑拆除由跨中向两端对称隔一拆一，同排钢管支撑采用沙箱+千斤顶同步卸载，采用本发明技术方案的有益效果是：随着全部钢管支撑的依次拆除，使得桥梁悬臂结构自然下挠全部发生完成，保证了整个卸载过程中悬臂结构的纵向抗倾覆稳定性；安装转体防倾覆临时钢支撑，理论上临时钢支撑不受力，当梁的两端产生不平衡弯矩时临时钢支撑受力抵消此部分力，确保了施工安全。
Dismantling method of double-layer swivel bridge construction supporting bracket
一种双层转体桥梁施工支撑支架的拆除方法
CHEN HU (Autor:in) / ZHAO SHIJIE (Autor:in) / ZHANG YANJUN (Autor:in) / WANG YONG (Autor:in) / CHEN HUI (Autor:in) / YANG XUEZHEN (Autor:in) / ZHANG ZHIQIAN (Autor:in) / CHO JUN-HO (Autor:in) / GUAN ZHIJIAN (Autor:in) / YUN LU (Autor:in)
07.07.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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