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Arch bridge cantilever assembling construction optimization model and optimization calculation method

A technology for optimizing calculation and optimization model, applied in the direction of calculation, design optimization/simulation, instrument, etc., can solve the problems of few constraints, uneven cable force, many constraints, etc., to achieve smooth changes, improved accuracy, and high construction accuracy. Effect

Active Publication Date: 2018-05-15
GUANGXI ROAD & BRIDGE ENG GRP CO LTD
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Problems solved by technology

[0012] In order to overcome the problems of many constraints, uneven cable force, and difficulty in controlling the alignment during the construction process when using the traditional fixed-length cable buckle method for construction optimization analysis, a cantilever assembly construction of arch bridges based on "optimal process and controllable results" is proposed. The optimal calculation method has fewer constraints, and can strictly control the actual alignment and target alignment and cable force of the structure in each construction and hoisting stage, and ensure the advantages of assembly accuracy

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  • Arch bridge cantilever assembling construction optimization model and optimization calculation method
  • Arch bridge cantilever assembling construction optimization model and optimization calculation method
  • Arch bridge cantilever assembling construction optimization model and optimization calculation method

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Embodiment Construction

[0046] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this invention belongs. The terminology used herein in the description of the present invention is for the purpose of describing specific embodiments only, and is not intended to limit the present invention. As used herein, the term "and / or" includes any and all combina...

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Abstract

The invention provides an arch bridge cantilever assembling construction optimization calculation method. An actual line shape and a target line shape in each construction lifting stage are strictly controlled, so that the preraised height value of each control node is changed mildly, the cable force uniformity is good, and the stress concentration phenomenon of a material in a construction process does not occur. An arch bridge cantilever assembling construction optimization model has the advantage of relatively few constraint conditions; the constraint condition that a deviation between theline shape after cable tightening and release, and the target line shape is in an allowed range mainly achieves a constraint control effect; and the problems of large buckling cable force gradient, poor uniformity and the like during adoption of a conventional method for performing construction optimization calculation are solved.

Description

technical field [0001] The invention relates to the technical field of cantilever assembly construction, in particular to an optimization calculation method for cantilever assembly construction of an arch bridge and an optimization model for cantilever assembly construction thereof. Background technique [0002] CFST (concrete-filled steel tube) arch bridge develops rapidly and is widely used in my country due to its many advantages such as economy, appearance, convenient construction and good durability. According to relevant data in the literature [Application Status and Prospects of Concrete Steel Tube Arch Bridges in my country [J]. Chinese Journal of Civil Engineering, 2017, 50(6):50-61], as of January 2015, there have been more than 400 bridges, and their construction spans The number of arch sections also set new records again and again. Among them, the calculated spans of Chongqing Wushan Yangtze River Bridge and Sichuan Hejiang Yangtze River No. 1 Bridge reached 460m...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/13G06F30/23
Inventor 韩玉秦大燕罗小斌唐颖贤郑健隗磊军严胜杰
Owner GUANGXI ROAD & BRIDGE ENG GRP CO LTD
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