关键词: 桥梁工程, 桥梁管养, 板梁桥, VBA程序, 管养数据

Abstract: An analysis was made on the maintenance data from the bridge maintenance system of Jiangsu Communication Holding Group (JCHG) for a highway which had been in operation for 15 years. The main faults and defects and their prime characteristics were determined. The identification and distillation of defects and fault attributes were realized by using the Microsoft Visual Basic for application (VBA) program. A new defect and fault characteristic database was built, and the overall defect and fault characteristics of the plate girder bridge, different span plate girder bridge defect and fault characteristics, and board girder bridge defect and fault characteristics developed over time were statistically analyzed. The results show that the crack in the beam body was the most important disease form, followed by the bearing disease and abutment damage. The lateral transverse cracks of 8, 10, and 13 m beams are most concentrated, while the vertical cracks in the web of the 16 m beams and the transverse cracks in the wing protrude of the 20 m beams are prominent. The main diseases of the bearing increase linearly with the span, and the cracks on the piers and terraces decrease linearly with the span. The cracks of the plate-girder bridge generally increase with the year, and the transverse cracks on floor plates, the vertical cracks on web plates , and the transverse cracks on wing plates tend to ease after 11 years of opening to traffic. The main diseases of the bearing increased rapidly with the year, especially after 11 years of opening to traffic.

Key words: bridge engineering, bridge maintenance, plate girder bridge, VBA program, maintenance data