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Precise positioning method for large-scale steel open caisson
The invention provides a precise positioning method for a large-scale steel open caisson, and relates to the technical field of bridge engineering construction. The positioning method comprises the following steps that firstly, a manufactured steel anchor pile is conveyed to upstream and downstream pile position parts for positioning inserting beating construction, then, concrete gravity anchors are cast and positioned at the two sides of the steel open caisson, after the steel open caisson is conveyed to a pile position in a floating way, the connection of lower drag cables, upper drag cables and side anchor ropes is sequentially completed, then, the inclination degree and the plane twisted angle of the steel open caisson are subjected to primary positioning by using hydraulic continuous tensioning equipment, and during water injection downward sinking of the steel open caisson, the steel open caisson is subjected to fast dynamic fine adjustment in the downwards sinking process and the precise positioning during the water injection implantation through the hydraulic continuous tensioning equipment, so that a steel open caisson structure realizes the safe implantation in a controllable state. The precise positioning method has the advantages that the positioning accuracy is high, the construction cost and the risk are low, and in addition, the influence on the river bed scouring and deposition and the peripheral environment is reduced.
Precise positioning method for large-scale steel open caisson
The invention provides a precise positioning method for a large-scale steel open caisson, and relates to the technical field of bridge engineering construction. The positioning method comprises the following steps that firstly, a manufactured steel anchor pile is conveyed to upstream and downstream pile position parts for positioning inserting beating construction, then, concrete gravity anchors are cast and positioned at the two sides of the steel open caisson, after the steel open caisson is conveyed to a pile position in a floating way, the connection of lower drag cables, upper drag cables and side anchor ropes is sequentially completed, then, the inclination degree and the plane twisted angle of the steel open caisson are subjected to primary positioning by using hydraulic continuous tensioning equipment, and during water injection downward sinking of the steel open caisson, the steel open caisson is subjected to fast dynamic fine adjustment in the downwards sinking process and the precise positioning during the water injection implantation through the hydraulic continuous tensioning equipment, so that a steel open caisson structure realizes the safe implantation in a controllable state. The precise positioning method has the advantages that the positioning accuracy is high, the construction cost and the risk are low, and in addition, the influence on the river bed scouring and deposition and the peripheral environment is reduced.
Precise positioning method for large-scale steel open caisson
LI JUNTANG (author) / CHEN KAIQIAO (author) / QIU QIONGHAI (author) / CHEN TAO (author) / MAO WEIQI (author) / TU MANMING (author) / XU JIAPING (author) / LI FANGFENG (author) / TANG YONG (author) / ZHANG WENBIN (author)
2015-04-01
Patent
Electronic Resource
English
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