T型刚构桥在山区特殊地形的应用

为找到适宜枫香堡大桥桥位陡峭地形的桥型,对T型刚构桥和常规T梁桥2种桥型方案从施工工期、环境影响、工程造价等方面进行比选。结果表明:1)T型刚构桥对悬崖、深谷等地形的施工风险和环境影响较小,造价和施工工期可控;T梁桥需在悬崖上立墩,施工风险大,工期和造价等都不可控,因此推荐T型刚构桥方案;2)该桥建成后,达到设计之初的目标和效果,对桥位周边环境影响控制在最小,实现了对环境最大程度的保护。

Application of T-shaped Rigid Frame Bridge in the Special Mountainous Area

T-beam bridge and the T-shaped rigid frame bridge are compared from aspects of construction period,the environmental impact and the construction cost to find a bridge type proper for FengXiangBao Bridge which is on a steep terrain.The results show that the construction risk and environmental impact of T-shaped rigid frame bridge on cliff,deep valley and other terrain are small,and the cost and construction period are controllable,while T-beam bridge needs to construct pier on cliff,which means its construction risk is large,and the construction period and cost are uncontrollable,which,therefore the scheme of T-shaped rigid frame bridge is recommended.After completion,the aims and effects are achieved,where the effect on the environment is controlled to the least and the environment is protected.