Long-span Arch Bridge Construction Optimization Analysis

Long-span reinforced concrete arch bridge with its graceful shape and the economy, long-span, in our country has been widely used. At present most of the use of non-reinforced concrete arch bridge construction scaffold hoisting cable. For more economic security, long-span arch bridge for the construction phase to optimize the situation is very necessary.Has been extensively studied in the literature at home and abroad on the basis of the wells in this article to rock bridge suspended Hunan (net of inter-130m of reinforced concrete box arch bridge) for the engineering background of large-span arch bridge of the installation techniques have been studied, analyzed and discussed several commonly used large-span arch bridge construction method of the advantages and disadvantages, the use of optimization methods of calculation to determine the best construction programs; summary and comparison of the current deduction of several commonly used reasonable force calculation soso; A theory based on the optimization of cable to determine a reasonable method of calculating the location of cable point in order to better ensure that the entire debit system linked to the safety cable at the same time to save the material to be used to reduce construction costs; the preparation of a large-span reinforced concrete arch bridge Column loading order of the order flow process to optimize the arch on the order of columns to optimize the load. The main research work in this article are as follows:(1) at home and abroad, having studied the relevant literature on the basis of several commonly used on the current bridge construction method and construction of a comprehensive process, and the advantages and disadvantages of various construction methods are analyzed and summarized;(2) of the hoisting cable, cable construction method buckle hanging soso deduction method of calculating power of several of the advantages and disadvantages are analyzed and compared, combined with practical engineering, the use of different methods of calculation of the deduction is calculated soso power and analysis;(3) the use of large-scale general-purpose finite element software ANSYS, the establishment of arch finite element model of the installation, the introduction of optimization of the method of calculating deductions were soso and the maximum tensile stress arch target to optimize the deduction claim for a reasonable determination of the cable point detailed calculation and analysis;(4) ring deformation of the various conditions to optimize the smallest targets, ANSYS using APDL programming language developed a long-span arch bridge of the load order to optimize the calculation of the order flow, effectively on the arch of the load order of column optimized calculation.