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Method for prefabricating and installing box girder prefabricated segment without measuring tower
The invention discloses a method for prefabricating and installing box girder prefabricated segments without a measuring tower. The method includes the following steps of firstly, setting a fixed end formwork, and forming the first box girder prefabricated segment adjacent to the fixed end formwork through pouring, and setting four measuring points A, B, C and D on the surface of the first box girder prefabricated segment; secondly, moving the first box girder prefabricated segment to a preset position; thirdly, forming the second box girder prefabricated segment between the first box girder prefabricated segment and the fixed end formwork, wherein the second box girder prefabricated segment is formed through pouring just like the way in the first step. By controlling the relative position between the adjacent box girder prefabricated segments, the linear control over the box girder prefabricated segments is achieved, and the problems that in the prior art, the measuring tower is adopted to control installation, the measuring tower can move in soft soil regions and temperature frequently-changing regions, large errors are caused, and the errors can be accumulated to the bridging state finally and do harm to the structure stress are solved.
Method for prefabricating and installing box girder prefabricated segment without measuring tower
The invention discloses a method for prefabricating and installing box girder prefabricated segments without a measuring tower. The method includes the following steps of firstly, setting a fixed end formwork, and forming the first box girder prefabricated segment adjacent to the fixed end formwork through pouring, and setting four measuring points A, B, C and D on the surface of the first box girder prefabricated segment; secondly, moving the first box girder prefabricated segment to a preset position; thirdly, forming the second box girder prefabricated segment between the first box girder prefabricated segment and the fixed end formwork, wherein the second box girder prefabricated segment is formed through pouring just like the way in the first step. By controlling the relative position between the adjacent box girder prefabricated segments, the linear control over the box girder prefabricated segments is achieved, and the problems that in the prior art, the measuring tower is adopted to control installation, the measuring tower can move in soft soil regions and temperature frequently-changing regions, large errors are caused, and the errors can be accumulated to the bridging state finally and do harm to the structure stress are solved.
Method for prefabricating and installing box girder prefabricated segment without measuring tower
ZHANG YONGTAO (author) / WANG MIN (author) / WU XINGFA (author) / ZHENG HEHUI (author) / HUANG YUE (author) / YOU XINPENG (author) / HUANG CAN (author) / PENG CHENGMING (author) / CHEN SHAOLIN (author) / ZOU LONGYAN (author)
2015-12-09
Patent
Electronic Resource
English
IPC:
E01D
BRIDGES
,
Brücken
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