Abstract

Info

Title:: Whole Process Simulation Analysis and Health Monitoring of Spatial Pipe Truss Structure Gymnasium

Author(s):: WANG Xiu-li; RONG Zi-hao; YANG Ben-xue; LUO Chong-de; ZHOU Yan; WU Xiao-yan; School of Civil Engineering, Lanzhou University of Technology

Keywords:: spatial pipe truss structure; construction process; numerical simulation; health monitoring; birth and death element method

Abstract:: The hoisting stage during construction process of spatial pipe truss structure was simulated by the birth and death element method in the finite element software ABAQUS. The simulation results of member bar stress and node displacement were used as the initial conditions for the unloading stage of simulation construction process. The unloading stage was simulated by the support displacement method. At the same time, the differences of the three unloading methods were compared. The feasibility of simulation method was verified by comparing the simulation data of the step by step unloading method with the health monitoring data. The results show that the simulation of unloading process with the hoisting stage results as initial conditions can be used to find out the member bars subjected to cyclic loading on the upper part of support in the construction process, and the strengthening measures of the member bars should be strengthened. The step by step unloading can prevent the stress of structural member bar and the displacement of node change too fast, and avoid the dynamic response of overall structure which is not taken into account in design. The simulation results agree well with the actual health monitoring data. The step by step unloading is the optimal unloading scheme which is more suitable for practical engineering.