連續箱梁橋畢業設計

篇一：連續箱梁橋畢業設計

3×20m預應力混凝土連續箱梁分離式立交橋設計

摘 要 本設計為3×2O米預應力混凝土連續箱梁分離式立交橋。由於設計要求上跨一條二級公路，因此選用互不影響直行交通的分離式立交橋。全橋為雙向四車道，分左右兩幅橋進行設計，單幅結構橫向寬度為12m。全橋采用先簡支後連續的方法進行施工。在設計過程中，首先進行尺寸擬定，然後計算荷載橫向分配系數，出於安全性和簡便性，根據橫向分配系數決定出以邊梁為例進行內力組合並進行配筋計算,最後進行預應力損失及後期結構截面驗算。

關鍵詞 分離式立交橋,箱型梁，預應力混凝土，橫向分配系數

ABSTRACT

The design for the 3 × 20 meters of prestressed concrete continuous box girder separate overpass. Because a secondary road across the design requirements, so choose independently of each other direct transport of Separated Interchange. Full two-way four-lane bridge, at around two bridge design, single structure transverse width of 12m. Full-bridge using the first method simple and continuous support construction. In the design process, first, the size of the formulation, and then calculate the lateral load distribution coefficient, for security and simplicity, accordin