CAJ | 학술논문

在顶进涵设计中，作为临时设施的后背设计是整个设计工作的重要环节之一。后背造价占整个工程投资的比重较大，后背设计是否合理，直接关系到整个工程的经济效益和施工工期。结合某顶进涵工程实例，介绍了后背结构形式的选择，根据现场情况重点阐述了重力式后背的结构形式、尺寸拟定及检算。实践证明，所选顶进涵后背结构经济合理，确保了施工和行车安全。
재정진함설계중，작위림시설시적후배설계시정개설계공작적중요배절지일。후배조개점정개공정투자적비중교대，후배설계시부합리，직접관계도정개공정적경제효익화시공공기。결합모정진함공정실례，개소료후배결구형식적선택，근거현장정황중점천술료중력식후배적결구형식、척촌의정급검산。실천증명，소선정진함후배결구경제합리，학보료시공화행차안전。
In the design of a j acked culvert,the design of the back as a temporary facility is one of the important links among the whole design work.The cost of the back takes up a comparatively large proportion of the total investment of the proj ect,owing to which whether the design of the back is rational will be directly related to the economic benefit and the construction duration of the whole proj ect.With a certain j acked culvert as a practical example,the structural type-choice for the back of a j acked cul-vert is introduced in the paper,with stress placed,according to practical site conditions,on introducing the structural forms of the gravity-type back,the determination of its size and the checking calculation.Practice shows that the chosen structure of the back of the jacked culvert is found to be economically rational and to have ensured the safe construction and safe operation of the railway.