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A platform for research: civil engineering, architecture and urbanism
Construction method of large-span arch stiffening asymmetric section continuous beam
The invention discloses a construction method of a large-span arch stiffening asymmetric section continuous beam. The method comprises the following steps: S1, designing a counterweight balance load by adopting a preset method to realize bending moment balance of an arch stiffening continuous beam; and S2, completing large-span arch stiffening continuous beam unbalanced counterweight constructionby adopting a preset scheme. The method has the beneficial effects that under the conditions of large-span asymmetric section load and mobile protection construction, large unbalanced moment is prevented from being generated at one end through sectional balance weight and mobile loading, so that large deviation of girder linearity in the construction process is prevented, smooth closure of the whole bridge is guaranteed, and the expected girder bridging linearity is achieved; the tensile stress of the section top plate caused by the balance weight can be effectively reduced, and therefore cracks are prevented from being generated.
本发明公开了一种大跨度拱加劲不对称截面连续梁施工方法，该方法包括以下步骤：S1、采用预设方法设计配重平衡荷载，实现拱加劲连续梁弯矩平衡；S2、采用预设方案完成大跨度拱加劲连续梁不平衡配重施工。有益效果：本发明主要介绍在大跨度不对称截面荷载及移动防护施工条件下，通过分节段平衡配重及移动配载避免一端产生较大的不平衡力矩，以防止施工过程中主梁线性发生较大偏差，保证全桥顺利合龙、达到预期的主梁成桥线性；可以有效的减小因配重产生的截面顶板的拉应力，从而防止裂缝的产生。
Construction method of large-span arch stiffening asymmetric section continuous beam
The invention discloses a construction method of a large-span arch stiffening asymmetric section continuous beam. The method comprises the following steps: S1, designing a counterweight balance load by adopting a preset method to realize bending moment balance of an arch stiffening continuous beam; and S2, completing large-span arch stiffening continuous beam unbalanced counterweight constructionby adopting a preset scheme. The method has the beneficial effects that under the conditions of large-span asymmetric section load and mobile protection construction, large unbalanced moment is prevented from being generated at one end through sectional balance weight and mobile loading, so that large deviation of girder linearity in the construction process is prevented, smooth closure of the whole bridge is guaranteed, and the expected girder bridging linearity is achieved; the tensile stress of the section top plate caused by the balance weight can be effectively reduced, and therefore cracks are prevented from being generated.
本发明公开了一种大跨度拱加劲不对称截面连续梁施工方法，该方法包括以下步骤：S1、采用预设方法设计配重平衡荷载，实现拱加劲连续梁弯矩平衡；S2、采用预设方案完成大跨度拱加劲连续梁不平衡配重施工。有益效果：本发明主要介绍在大跨度不对称截面荷载及移动防护施工条件下，通过分节段平衡配重及移动配载避免一端产生较大的不平衡力矩，以防止施工过程中主梁线性发生较大偏差，保证全桥顺利合龙、达到预期的主梁成桥线性；可以有效的减小因配重产生的截面顶板的拉应力，从而防止裂缝的产生。
Construction method of large-span arch stiffening asymmetric section continuous beam
一种大跨度拱加劲不对称截面连续梁施工方法
SU LI (author) / MIN KUN (author) / XIE LEI (author) / WANG WEIWEI (author) / SHANG YAXIN (author) / SHI GUOQIANG (author)
2021-03-12
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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