高寒山区高速公路桥梁型式选择

Highway Bridge Type Selection in Highland and Cold Area

高寒山区地形、地貌条件十分复杂,地质情况多变,环保、水保要求高,且多经过少数民族地区,高速公路桥梁建设面临新的问题。制定了桥梁设计原则,对桥梁跨径的选择进行了专题研究。通过对预制场地与运梁两个关键问题的分析,分析采取装配式桥梁方案的可行性。对常规装配式梁桥与一般跨径现浇桥梁,根据典型地质条件,对不同桥高、不同跨径的桥梁进行了指标分析,为类似条件桥梁方案设计提供参考。

Highland and cold area has very complex landform and physiognomy, the geological condition is changeable and with high requirement of environmental protection and water conservation. Highway bridge construction faces new problems as it through ethnic minority areas. Bridge design principles has been formulated,monographic study has been carried out on the research to the choice of bridge spans. Feasibility study of prefabricated bridges has been analyzed by analyzing two key issues- the prefabrication site and beam. According to typical geological condition, index analysis has been made for bridges of different height and spans of conventional prefabricated bridges of general prefabricated bridges. The reference for bridge design in similar condition has been provided.