Mechanical Performance Analysis Of T Rigid Frame And Ribbed Arch Combination Bridge

T rigid frame and ribbed arch combination bridge is the development of traditionalbeam-arch composite bridge during its application. It utilizes and develops themechanical performances and advantages of T rigid frame and arch. While there are fewcorrelative reports about it, and there are few complete analysis of mechanicalcharacteristic of structure. Based on a practical engineering, this paper use the software Ansys to build a FEMmodel of T rigid frame and ribbed arch combination bridge and analyses it particularly.The main contents of the paper are describes as follows: a,Analyzing the static behavior of the basic bridge under dead load and annualtemperature change and live load, then summarizing the static characteristic of T rigidframe and ribbed arch combination bridge. b,After changing rise-span ratio and the stiffness of pier, parameter analysis isprocessed under dead load and annual temperature change and live load, then the rule of Trigid frame and ribbed arch combination bridge is summarized with the change ofrise-span ratio and the stiffness of pier. c,Linear method is used in analyzing the stability of the finite element model of thebridge, the coefficient of stability of different state after construction is given. d,After changing a lot of parameters such as span length and rise-span ratio of thebridge, stability analysis is processed. The chief parameters that influence strongly thestabilityof structure were found out. The results in the paper is useful for reference to the readers who engage in bridgedesign in many aspects such as avoiding errors in the process of the design, reducingengineering investment and insuring the engineering security.