Construction method for lifting and assembling of arch rib of steel tube arch bridge
A steel pipe arch bridge and construction method technology, applied in bridges, bridge construction, erection/assembly of bridges, etc., can solve problems such as high safety risks, low degree of mechanization, and difficult control of construction quality, so as to reduce safety risks, simplify construction processes, Effect of reducing investment in temporary facilities
Active Publication Date: 2018-11-30
THE SECOND CONSTR OF CTCE GROUP
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Problems solved by technology
[0003] The arch rib construction of traditional steel pipe arch bridges generally adopts cantilever assembly, brackets, cable-stayed buckle-hanging methods, etc. Large-scale temporary projects and auxiliary facilities require a large investment and high cost; the degree of mechanization is low, and the construction quality is not easy to control; there are many high-altitude operations and high safety risks
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[0021] The present embodiment relates to a steel pipe arch bridge arch rib jacking and assembling construction method. The steel pipe arch bridge includes a main longitudinal girder 1 and an arch rib 2 . The arch rib 2 includes the first arch rib section 2-1 arranged at the front end of the main longitudinal beam 1, the second arch rib section 2-2 arranged at the rear end of the main longitudinal beam 1, the first arch rib section 2-1 and the second arch rib section 2-1. The third arch rib section 2-3 between the two arch rib sections 2-2. The rib 2 is a semicircular rib formed by a first rib section 2-1, a second rib section 2-2, and a third rib section 2-3, and so on.
[0022] The construction method for lifting and assembling the arch ribs of the steel pipe arch bridge comprises the following steps:
[0023] Such as figure 1 As shown, 1) After the installation of the main longitudinal beam 1 of the steel pipe arch bridge is completed, one end of the first arch rib section...
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The invention relates to a jacking and assembling construction method for arch ribs of a steel pipe arch bridge and belongs to the technical field of building of bridges. The construction method comprises the following steps: 1) after a main longitudinal girder of the steel pipe arch bridge is mounted, mounting first and second arch rib sections as well as first and second hydraulic oil jacks; 2) hinging one end of a third arch rib section to the other end of the first or second arch rib section, and hinging a third hydraulic oil jack in a locking state between the third arch rib section and the first or second arch rib section hinged with the third arch rib section; 3) rotating and jacking the first and second arch rib sections to design positions; 4) folding the first, second and third arch rib sections; and 5) welding the first, second and third arch rib sections and arch feet, and dismounting the first, second and third hydraulic oil jacks. The construction method fully utilizes twisted shafts and the hydraulic oil jacks to finish the jacking and assembling of the arch ribs; and on the premise of meeting the assembling accuracy of the arch ribs, construction processes are simplified, the input of temporary facilities is reduced, and the safety risk is reduced.
Description
technical field [0001] The invention relates to a construction method for lifting and assembling arch ribs of a steel pipe arch bridge, which belongs to the technical field of bridge construction. Background technique [0002] As the pace of urbanization in China is getting faster and faster, large-scale bridge projects emerge in an endless stream. As a form of bridge spanning existing roads, railways, valleys, and rivers, arch bridges have been widely used. [0003] The arch rib construction of traditional steel pipe arch bridges generally adopts cantilever assembly, brackets, cable-stayed buckle-hanging methods, etc. Large-scale temporary projects and auxiliary facilities require a large investment and high cost; the degree of mechanization is low, and the construction quality is not easy to control; there are many high-altitude operations and high safety risks. Contents of the invention [0004] The technical problem to be solved in the present invention is to propose a...
Claims
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IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 任世朋王宁平孙小猛胡晓东李世铭朱元元朱利荣刘梅蒯鹏
Owner THE SECOND CONSTR OF CTCE GROUP