斜抛撑在临时道路边坡支护中的应用

Application of Inclined Brace in Temporary Supporting System of Road Slope

斜抛撑作为一种支撑形式,较一般的内支撑结构布置灵活,可节省大量构件,方便土方开挖,节约工期,具有明显经济效益。被广泛应用于基坑支护工程中,其一端与排桩冠梁连接,另一端以地下结构底板上设置的牛腿作为支点。文章以常州奔牛大桥改造项目为例,介绍了斜抛撑在桥梁改造期间的临时道路边坡中的应用,及相关关键问题的处理方法。施工期间监测数据表明对斜抛撑相关参数的计算取值是合理可行的,取得了良好的效果。

Compared with the normal inner supporting structure, inclined bracing has the advantage of flexible layout which can save much constructs, facilitate earth excavation and shorten construction period. As a supporting structure, inclined bracing has very obvious economic benefits and has been widely used in retaining structure of foundation pit. Its one side normally is connected with top beam of soldier pile, and the other side with the supporting point from the bracket in the Floor of underground structure. Via the example of Benniu bridge reconstruction, the application of inclined bracing in Temporary Supporting System of Road slope during bridge reconstruction and also the fixing method of some key techniques were introduced.Monitoring data during construction shows that the calculated values for inclined bracing related parameters is reasonable and feasible, and a better result has been achieved in practice.