基于ANSYS的桥梁结构检测技术研究

AbstractWith the rapid development of the traffic,the bridge is playing a more andmore important role as a transportation hub.Especially in recent decades,manykinds of highway bridges,railway bridges,railway and highway bridges,urbanbridges and overpasses have been built in china.During the construction andoperation management of these bridges,we need to do a lot of work to ensure theconstruction quality and safety.Especially the existing reinforced concretebridges,because of disrepair,in the role of external physical and chemical factors,the concrete structure will be aging,cracking phenomenon,thereby reducing thebearing capacity,stiffness and durability,affect the normal service life of thestructure,even when serious collapse accident occurred.Therefore,it isnecessary to detect the safety of the bridge.In this paper,combined with the actual detection of bridge engineering,thebridge detection technology and safety state assessment methods are analyzedand studied,the main contents are as follows:Based on the review of the typical accidents in the history of bridgedevelopment at home and abroad,this paper expounds the importance,significance and purpose of bridge structure safety detection,and introduces thepresent situation and development trend of bridge safety inspection at home andabroad.Based on the analysis to the bridge safety testing situation,systematicallyexpounded the content and object classification,bridge structure state detectionof detection;analysis of the static and dynamic detection of the content,methods,instruments and applicability;introduces the basic theory of static and dynamicload test;and describes the nondestructive testing technology of the contents andmethods of bridge structure.According to the basic theory and method of modeling and analysis inbridge structure detection,combined with the common content of bridgestructure detection,ANSYS is used to develop the APDL parametric languagetwo times.Including the calculation of the influence line,as well as the directmethod to calculate the transverse distribution of live load,batch extraction ofthe calculation results,and draw a series of factors such as the impact of