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A platform for research: civil engineering, architecture and urbanism
Large-span steel truss girder single-cantilever construction method
A large-span steel truss girder single-cantilever erection construction method comprises the steps that an erected steel truss girder serves as a pinch bar, a part of temporary supports serve as supporting points, a rear anchor balance weight system is additionally arranged, and it is guaranteed that the acting force of a resistance end is larger enough than that of a force application end to achieve single-cantilever assembly; and a main bridge steel truss girder is assembled by a sliding walking bridge deck full-rotation mast crane section by section in a cantilever mode from the single sideof a side pier to the midspan direction, and the cantilever length is continuously increased till a main girder is erected on piers. In the erecting process, the anti-overturning coefficient of the steel girder is always met, and it is guaranteed that the safety coefficient in the steel beam erecting process is larger than 1.3.
一种大跨度钢桁梁单悬臂架设施工的方法，以架设的钢桁梁自身为撬杆、部分临时支架作支点、加后锚配重系统，保证阻力端的作用力比施力端的作用力足够大实现单悬臂拼，从边桥墩单侧向跨中方向开始利用滑动走行桥面全回转桅杆吊机逐节间悬臂拼装主桥钢桁梁，悬臂长度不断增长，直至主梁架至墩上。在架设过程中，一直满足钢梁抗倾覆系数，保证钢梁架设过程中的安全系数大于1.3。
Large-span steel truss girder single-cantilever construction method
A large-span steel truss girder single-cantilever erection construction method comprises the steps that an erected steel truss girder serves as a pinch bar, a part of temporary supports serve as supporting points, a rear anchor balance weight system is additionally arranged, and it is guaranteed that the acting force of a resistance end is larger enough than that of a force application end to achieve single-cantilever assembly; and a main bridge steel truss girder is assembled by a sliding walking bridge deck full-rotation mast crane section by section in a cantilever mode from the single sideof a side pier to the midspan direction, and the cantilever length is continuously increased till a main girder is erected on piers. In the erecting process, the anti-overturning coefficient of the steel girder is always met, and it is guaranteed that the safety coefficient in the steel beam erecting process is larger than 1.3.
一种大跨度钢桁梁单悬臂架设施工的方法，以架设的钢桁梁自身为撬杆、部分临时支架作支点、加后锚配重系统，保证阻力端的作用力比施力端的作用力足够大实现单悬臂拼，从边桥墩单侧向跨中方向开始利用滑动走行桥面全回转桅杆吊机逐节间悬臂拼装主桥钢桁梁，悬臂长度不断增长，直至主梁架至墩上。在架设过程中，一直满足钢梁抗倾覆系数，保证钢梁架设过程中的安全系数大于1.3。
Large-span steel truss girder single-cantilever construction method
大跨度钢桁梁单悬臂施工方法
TIAN RUZHOU (author) / FU GUOPING (author) / WANG LEI (author) / LI YAN (author) / CHENG SHIYU (author) / WU HONGQUAN (author) / LI GUANGXIANG (author)
2020-12-18
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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