Research On Construction Monitoring Of Steel Reinforced Concrete Transition Truss

Steel reinforced concrete transition truss is one of competitive structure forms in modern long-span transition structure. With emphasizing on architecture aesthetics of structure, and increasing of span and component section complexity more and more, construction monitoring of long-span transition truss plays an important role in assuring successfully complication of structure. Construction monitoring is real-time monitoring on in the process of construction., and adapting monitoring result, in order to ensuring reliability and safety of structure, guarantying force and deformation meeting the design requirements in building structure.For the case of real construction of the Guizhou provincial committee office building, we monitor for actual stress status of steel reinforced concrete transition truss in the process of construction. with vibrating wire sensor. The article analyze stress status of steel reinforced concrete transition truss in the construction process with ANSYS, contrasting on results, appraising actual stress status, which guide construction successfully completed and optimally approach to perfect control target. And based on monitoring results, this article puts forward optimized design scheme of the project, as reference for future similar structure design. The main researches in this thesis are as follows:(1) The four common data acquisition scheme are introduced in the current engineering circle. Designing data acquisition scheme suitable for this project, considering more measuring point, no real-time monitoring, long operating cycle, the effect of temperature and creep, and so on.(2) The effective measuring point scheme is determined on the basis of results by ANSYS.(3) The effective sensor installation scheme is determined on the basis of construction progress.(4) Temperature is measured by semiconductor intelligent digital temperature sensor of America DALLAS company, in order to modifying the error of vibrating wire sensor because of temperature changing.(5) The actual stress status of steel reinforced concrete transition truss in the process of construction is evaluated, by the measuring results of transition truss'steel strain, concrete floors strain and cross beam internal forces. The monitoring results prove that the actual stress status of transition truss is safer and more reasonable than theoretical value, that verify rationality and effectiveness.(6)Based on monitoring results, this article is respectively optimizing design for this project from aspect of bar section and redundant member.