西安市地裂缝对长安路立交桥致灾机理调查研究

西安地裂缝作为一种特殊的城市地质灾害,已经对基础设施造成很大的危害。长安路立交的破坏最为严重和典型,文章结合西安地裂缝的分布及活动特点,详细分析了地裂缝活动引起的长安路立交的破坏形式和特点。并对引起长安路立交破坏的原因做了进一步分析,得出了由于长安立交没有很好的排水措施导致地裂缝的异常活动从而引起桥梁破坏的结论。同时,文章还结合长安路立交的结构措施给出了在地裂缝带修建立交的结构措施建议。并最终得出了在地裂缝带修建城市立交等基础设施,应从采取措施减少地裂缝活动和采取合理的结构措施以适应地裂缝活动两方面进行综合考虑的结论。

Analysis on Xi'an ground-fissure destruction to Chang'an Road overpass

The ground-fissure,as a special geological disaster,has been a great harm to the city infrastructure.The destruction of Chang'an Road overpass is most serious and typical.The form and characteristics of the damage to Chang'an Road overpass in Xi' an is analyzed in detail in the paper,with a reference to the distribution of the ground-fissures and features of ground-fissure activities.A further analysis that it is the poor drainage facilities leads to abnormal activities of ground-fissures and resultes in the destruction of Chang' an Road overpass,is also discussed in the paper.Meanwhile,measures of structure design are provided in the paper,with the structural design of Chang'an Road as an example.The article finally comes to the conclusion that proper measures should be taken in structural design to reduce the activities and to fit the features of ground-fissures in the construction of overpasses and other infrastructure in a city.