震害调查分析及其对山区桥梁抗震对策的启示

摘要

为了更好地解决山区桥梁抗震问题，通过地震震害调查并分析，得出山区桥梁震害的一些规律和特点，结论是桥梁选址要注意远离断裂带和高陡边坡，桥型尽量选择正桥和直桥，山区桥梁抗震主要是通过减隔震和增强延性，桥墩可以选择圆形形式，拱桥应遵循“强拱弱撑”，有崩塌风险的地方可以用路堤替代桥梁引桥。%In order to better solve the problem of mountainous seismic bridge,through the earthquake damage investigation and analysis,draw some regularity and characteristics of mountain bridge seismic damage. Conclusion is bridge site selection should pay attention to is away from the fault zone and the high and steep slope. Bridge should choose orthogonal bridge and straight bridge. Mountainous bridge seismic is generally shock absorbing and isolation,enhance the ductility. Piers should choose circular form. Arch bridge should follow the“strong arch and weak stand”. At risk of collapse of should use the embankment alternative approach span bridge.