Control Of Cable-hoisting Construction Of Steel Tubular Arch Rib & Application Of Fuzzy Inference System

In this paper, combining with the construction supervisory of two large-span concrete filled steel tubular (CFST) arch bridges, Nanning Namo Youjiang Bridge, which main span is 190 meters, and Guilin Shijiadu Lijiang Bridge which main span is 170m, the construction control problem is detailed, which is about the cable-hoisting construction of steel tubular arch rib of large-span concrete filled steel tubular arch bridge. A method for this purpose is presented in this paper, and special software CMSSIA is preliminarily developed for this purpose by using programming technique provided by ANSYS which is a famous powerful finite element analysis software, and Fuzzy Inference System is first applied to carry on construction control for the cable-hoisting construction of steel tubular arch rib.This paper is divided into six parts, which contents is introduced as follows: The Chapter 1 is titled 'The Exordium'. It is expounded that the development history, status quo and trends of concrete filled steel tubular arch bridge, and status quo of its construction techniques and construction controlling. It is introduced that the application of modern control theories in bridge construction controlling. It is also specially discussing the present condition of construction control of a construct method for steel tubular arch rib, which is named as jack-cable-stayed-erection technique. And pointing out the problem for resolve still.The Chapter 2 is titled 'The Introduction of Supervisory of Cable-hoisting Construction of Steel Tubular Arch Rib'. It is introduced that the general processes of the construction supervision of Steel Tubular Arch Rib of the two CFST arch bridges: Nanning Namo Youjiang Bridge and Guilin Shijiadu Lijiang Bridge. The construction supervisory is taken on by Guangxi University.The Chapter 3 is 'Development of The Specializing Software for Analysis of CFST Arch Bridge', which introduce the development schedule of CMSSIA -the specializing software for construction process analysis for CFST arch bridge, and the develop achievement. And a strong emphasis on the special function modules are mentioned, which is developed by using programming technique provided by ANSYS, such as ANSYS parametric design language. These new developed functions are specially used for the analysis of the cable-hoisting construct process of steel tubular arch rib of CFST arch bridge, which include several modules: the auto-modeling program in Preprocess, the auto-report program in Postprocess, and some special function modules such as cable elastic modulus correction, arch axis line shape analysis, cable adjustment function, forward analysis and backward analysis, and so on. The new developed utilities carry on the construction analysis successfully.The Chapter 4 is 'Real-Time Supervisory and Control for Construction of Cable-hoisting Construction of Steel Tubular Arch Rib'. Combining with Supervisory for Shijiadu Bridge, it is introduced that the real-time analysis process for the actual construction process of steel tubular arch rib with thedeveloped CMSSIA, a set of control method is put forward. The first step, after backward analysis for the construction plan, the level control values of control points on arch rib and the reference values of cable forces are provided, which may minimize the adjust-times of cable force. The second step, the actual suspend erecting process is forward analyzed with real-time follow, as well as error analyzed. The third step, the adjust plan and control measure is provided following the actual status and the analysis results. In this chapter, a shape control method with fuzzy inference system firstly for arch ribs abutting each other is put forward.The Chapter 5 is 'The Application of Fuzzy Inference System in Construction of Cable-hoisting Construction of Steel Tubular Arch Rib'. It is introduced that the principle and the method of Adaptive Neuro-Fuzzy Inference System (ANFIS), and the method with ANFIS to analyze and predict the level control values of control points on arch...