Testing And Appraisal Of Existing Reinforced Concrete Workshops And Reliability Analysis Of Carrying Capacity

After the reform and opening up,before the accumulation of manpower,material resources,technology,and ideas,coupled with the unprecedented liberation of agriculture,the development of industry has no worries.During the period of reform and opening up,the industry began its rapid development.A large number of industrial plants also began to be built in this period.Most of these factories were in service until the beginning of the 21 st century.However,with the rapid development of technology and continuous improvement of industrial production,the load on existing plants has also increased at an exponential level.The use and service modes of some plants have also changed,and whether the original plant can continue to be safely produced.Whether the key components are reliable when they are subjected to existing loads is a problem that needs to be solved.This article takes the existing industrial plant as the research object,this service plant is in service for a long time,is the product of the last century,its use and the use of the environment have changed.The on-site inspection performed the test and appraisal of the appearance and the use of the plant.The rebound strength method was used to measure the concrete strength of pillars,beams and other key components,and the deflection and carbonation depth of the key components of the plant were measured.Finally,the bearing capacity of key components was tested and identified according to the specifications.Then,based on the situation of on-site inspection,ANSYS finite element analysis software was used to perform finite element parametric modeling of some units of a single storey building,and Monte Carlo simulations were performed on the key parameters of the model using the PDS module provided by ANSYS.The Luo simulation uses Latin hypercube sampling.Among them,before the Monte Carlo simulation,the APDL language was used to perform post-processing on the ANSYS model,and the internal forces of the model were extracted.The key load-bearing positions with large internal forces were regarded as weak components.Then using the field data obtained from the test and the Monte Carlo simulation of the PDS module,the resistance and load conditions of the components were simulated,and the balance equations of resistance and load were established.Finally,the equations were translated into APDL language and imported into the analysis file of the PDS module.After carrying out Monte Carlo simulation sampling for a certain number of times,it was found that the bearing capacity of key components did not meet the requirements.Subsequently,the same steps and sampling times were performed for analysis.The results were the same and the bearing capacity of key components was not reliable.Finally,in order to verify the results of Monte Carlo simulation analysis,the JC method was used to verify the bearing capacity of key components.Finally,the relevant provisions of the specification were compared to verify the results of PDS module analysis.After reaching the conclusion,according to factors such as the mechanical characteristics of the components,the convenience of construction,and other factors,a reasonable method for the reinforcement of the components is proposed.