Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Accurate in-place construction method of portal pier steel bent cap for crossing existing railway
The invention discloses an accurate in-place construction method of a portal pier steel bent cap for crossing an existing railway. The method comprises the steps of selecting a crawler crane as hoisting equipment; pre-burying a temporary support on the pier top; arranging a pier top limiting plate on the pier body; arranging a bottom leaning plate on the bottom surface of the steel bent cap; hoisting the steel bent cap; adjusting the angle of the steel bent cap; enabling the steel bent cap to fall; enabling the bottom leaning plate to be clung to the pier top limiting plate; falling down the bent cap again; and welding the temporary support and the lower end edges of the left and right ends. The method has the beneficial effects that operation is easy and convenient, labor and time are saved, accurate in-place work can be completed only in 5-7 minutes, construction is efficient and reliable within the skylight time point, hoisting construction tasks can be completed safely and efficiently, the cost can be obviously reduced, the construction period can be shortened, and precious practical experience is accumulated for existing railway large-scale hoisting construction in the future.The leaning plate and the limiting plate are both made of Q345qD steel plates, are high in strength and rigidity and not prone to deformation, and can effectively ensure that bent cap falling is completed within the shortest time during hoisting.
一种跨既有铁路门式墩钢盖梁精准就位施工方法。其包括选用履带起重机作为起吊设备；墎顶预埋临时支座；在墎身上设置墩顶限位板；在钢盖梁的底面设置梁底靠位板；钢盖梁吊装；调整钢盖梁角度；使钢盖梁下落；梁底靠位板紧贴墩顶限位板；再次向下落梁；临时支座和左右梁端下端边缘焊接等步骤。本发明效果：操作简便、省工省时，仅用5‑7分钟即可完成精准就位工作，在天窗时间点内施工高效可靠，不仅有利于安全高效完成吊装施工任务，而且能够明显降低成本、缩短工期，为今后既有铁路大型吊装类施工积累宝贵实践经验。靠位板及限位板均采用Q345qD钢板制成，强度高，刚度大，不易变形，能有效地保证吊装时最短时间内完成落梁。
Accurate in-place construction method of portal pier steel bent cap for crossing existing railway
The invention discloses an accurate in-place construction method of a portal pier steel bent cap for crossing an existing railway. The method comprises the steps of selecting a crawler crane as hoisting equipment; pre-burying a temporary support on the pier top; arranging a pier top limiting plate on the pier body; arranging a bottom leaning plate on the bottom surface of the steel bent cap; hoisting the steel bent cap; adjusting the angle of the steel bent cap; enabling the steel bent cap to fall; enabling the bottom leaning plate to be clung to the pier top limiting plate; falling down the bent cap again; and welding the temporary support and the lower end edges of the left and right ends. The method has the beneficial effects that operation is easy and convenient, labor and time are saved, accurate in-place work can be completed only in 5-7 minutes, construction is efficient and reliable within the skylight time point, hoisting construction tasks can be completed safely and efficiently, the cost can be obviously reduced, the construction period can be shortened, and precious practical experience is accumulated for existing railway large-scale hoisting construction in the future.The leaning plate and the limiting plate are both made of Q345qD steel plates, are high in strength and rigidity and not prone to deformation, and can effectively ensure that bent cap falling is completed within the shortest time during hoisting.
一种跨既有铁路门式墩钢盖梁精准就位施工方法。其包括选用履带起重机作为起吊设备；墎顶预埋临时支座；在墎身上设置墩顶限位板；在钢盖梁的底面设置梁底靠位板；钢盖梁吊装；调整钢盖梁角度；使钢盖梁下落；梁底靠位板紧贴墩顶限位板；再次向下落梁；临时支座和左右梁端下端边缘焊接等步骤。本发明效果：操作简便、省工省时，仅用5‑7分钟即可完成精准就位工作，在天窗时间点内施工高效可靠，不仅有利于安全高效完成吊装施工任务，而且能够明显降低成本、缩短工期，为今后既有铁路大型吊装类施工积累宝贵实践经验。靠位板及限位板均采用Q345qD钢板制成，强度高，刚度大，不易变形，能有效地保证吊装时最短时间内完成落梁。
Accurate in-place construction method of portal pier steel bent cap for crossing existing railway
跨既有铁路门式墩钢盖梁精准就位施工方法
MENG XIRAN (Autor:in) / ZHANG KAI (Autor:in) / SUN YI (Autor:in) / ZHANG HERAN (Autor:in) / JIANG ZHIHENG (Autor:in) / PENG BEN (Autor:in) / LIU QING (Autor:in) / CAO SHAN (Autor:in)
20.10.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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