Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Large steel truss girder incremental launching construction structure and method
The invention relates to a large steel truss girder pushing construction structure and method. The construction structure comprises a sliding way, a sliding block is arranged on the sliding way, the two ends of the sliding way are each provided with a walking machine, and a distribution girder is arranged at the end of a vertical top; the upper end face of the sliding block and the upper end face of the distribution beam are used for making contact with the bottom of the steel truss girder, and the lower end face of the sliding block makes contact with the sliding way. The friction coefficient between the upper end face of the sliding block and the steel truss girder is mu1, the friction coefficient between the lower end face of the sliding block and the sliding way is mu2, and mu1 is larger than mu2. A pressure control mechanism is arranged on a vertical top of the walking machine, when the steel truss girder is in a longitudinal pushing state, the vertical jacking force is controlled to be below Fmin, when the steel truss girder is in an overall jacking state, the vertical jacking force is controlled to be above Fmax, Fmin is smaller than the maximum vertical jacking force capable of being borne by the middle of a chord member at the bottom of the steel truss girder, and Fmax is smaller than the maximum vertical jacking force capable of being borne by the middle of the chord member at the bottom of the steel truss girder. The Fmax is greater than the minimum vertical jacking force for completely jacking the steel truss girder by the vertical jack.
本发明涉及一种大型钢桁梁顶推施工结构及方法，施工结构包括滑道，滑道上设有滑块，所述滑道的两端各设有一个步履机，竖向顶的端部设有分配梁；所述滑块的上端面和分配梁的上端面用于与钢桁梁的底部接触，所述滑块的下端面与滑道接触；所述滑块上端面与钢桁梁之间的摩擦系数为μ1，滑块下端面与滑道之间的摩擦系数为μ2，μ1>μ2；所述步履机的竖向顶设有压力控制机构，当钢桁梁处于纵向顶推状态时，竖向顶压力控制在Fmin以下，当钢桁梁处于整体顶升状态时，竖向顶压力控制在Fmax以上，Fmin小于钢桁梁底部弦杆中部最大可承受竖向顶力，Fmax大于竖向顶完全顶升钢桁梁的最小竖向顶力。
Large steel truss girder incremental launching construction structure and method
The invention relates to a large steel truss girder pushing construction structure and method. The construction structure comprises a sliding way, a sliding block is arranged on the sliding way, the two ends of the sliding way are each provided with a walking machine, and a distribution girder is arranged at the end of a vertical top; the upper end face of the sliding block and the upper end face of the distribution beam are used for making contact with the bottom of the steel truss girder, and the lower end face of the sliding block makes contact with the sliding way. The friction coefficient between the upper end face of the sliding block and the steel truss girder is mu1, the friction coefficient between the lower end face of the sliding block and the sliding way is mu2, and mu1 is larger than mu2. A pressure control mechanism is arranged on a vertical top of the walking machine, when the steel truss girder is in a longitudinal pushing state, the vertical jacking force is controlled to be below Fmin, when the steel truss girder is in an overall jacking state, the vertical jacking force is controlled to be above Fmax, Fmin is smaller than the maximum vertical jacking force capable of being borne by the middle of a chord member at the bottom of the steel truss girder, and Fmax is smaller than the maximum vertical jacking force capable of being borne by the middle of the chord member at the bottom of the steel truss girder. The Fmax is greater than the minimum vertical jacking force for completely jacking the steel truss girder by the vertical jack.
本发明涉及一种大型钢桁梁顶推施工结构及方法，施工结构包括滑道，滑道上设有滑块，所述滑道的两端各设有一个步履机，竖向顶的端部设有分配梁；所述滑块的上端面和分配梁的上端面用于与钢桁梁的底部接触，所述滑块的下端面与滑道接触；所述滑块上端面与钢桁梁之间的摩擦系数为μ1，滑块下端面与滑道之间的摩擦系数为μ2，μ1>μ2；所述步履机的竖向顶设有压力控制机构，当钢桁梁处于纵向顶推状态时，竖向顶压力控制在Fmin以下，当钢桁梁处于整体顶升状态时，竖向顶压力控制在Fmax以上，Fmin小于钢桁梁底部弦杆中部最大可承受竖向顶力，Fmax大于竖向顶完全顶升钢桁梁的最小竖向顶力。
Large steel truss girder incremental launching construction structure and method
一种大型钢桁梁顶推施工结构及方法
ZHENG SIQING (Autor:in) / ZHANG YONGFENG (Autor:in) / SONG QIYAO (Autor:in)
31.12.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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