Stress Monitoring And Numerical Simulation Of Hydraulic Climbing Formwork And Tower Crane System Of Super Tall Structures

Since the beginning of construction activities, humans have never stopped the desire and pursuit of the height of buildings. In modern society, more and more super tall structures appear in the city. For these complex and changeable structures with no precedent, the construction side often carries out multiple monitoring works for a scientific and accurate understanding of the stress state of structures and its working characteristics, so as to meet the needs of safety control in the process of construction. The main tower of Shenzhen Pingan financial center project is the tallest building on construction in Southern China, and it has adopted a number of the world’s leading construction equipments and technologies in its construction process. Besides, in order to guide the construction effectively and seek innovation and breakthrough in technology, many industry-leading technologies are also applied by the construction side for measuring and monitoring the project.This paper takes the stress monitoring of core-tube hydraulic climbing formwork system and tower crane supporting system as the background, by using the finite element software midas Gen for calculation of models, it comprehensively analyses the force performance of different forms of climbing formwork in construction conditions, climbing conditions and shutdown conditions as well as the stress characteristics of tower crane supporting system, of which the safety and applicability are emphatically analyzed when the pull rods does not cooperate with pressure rods.Based on the analysis of the model, the key parts of the two structure systems and the disadvantageous components which need to be focued on are defined. Combined with the actual situation at the scene, a real-time monitoring system is established on the lift beams, columns and other components of the climbing formwork structures, to analyse the stress change laws of each component in different stages of the construction process, including the stages of climbing frame, binding steel bar and the pouring of concrete. Due to the influence on the supporting structure when the tower arm position changes, a monitoring test is carried out on the main bearing members of crane supporting system structure, including the supporting frame girders and the diagonal braces, to analyse their stress change laws when the angle of the tower arm is changed, and the stress states of the top and bottom supporting frame are summarized at last.After comprehensively comparing and analyzing the results of model analysis and field monitoring, it comes to conclusions on the working performance evaluation of the climbing formwork system and tower crane supporting system during the construction monitoring, which can provide important reference for the safety of construction. The subject of this paper on stress monitoring and analysis of the hydraulic climbing formwork system and crane system has an important practical significance for their safe use in the construction, and is a beneficial exploration on construction safety and monitoring technology of super tall structures, maybe, it can also provide certain support for the development of technology in the relevant fields in the near future.