Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Bridgehead roadbed composite structure for preventing bumping at bridgehead and construction method
The invention discloses a bridgehead roadbed composite structure for preventing bumping at a bridgehead. The bridgehead roadbed composite structure comprises an asphalt surface layer, a pavement structure layer, a transition slab and a sleeper beam from top to bottom, one end of the butt strap is lapped on a bracket of an abutment ear back wall and abuts against the abutment, the other end of the butt strap is lapped on the sleeper beam, and the integrity of the sleeper beam and the butt strap is achieved through the steel bar connector; first-grade broken stone hardcore layers are arranged below the butt strap and on the two sides of the sleeper beam, and drainage facilities are arranged in the first-grade broken stone hardcore layers; the outer side face of the first grading broken stone hardcore layer is wrapped with a non-woven geotextile inverted filter layer, and the upper surface of the geotextile inverted filter layer is connected with a pavement structure layer. A second-grade broken stone hardcore can be further arranged beside the bearing platform, and a transverse drainage facility is arranged in the second-grade broken stone hardcore. The invention further discloses a construction method of the bridgehead roadbed composite structure. According to the bridgehead roadbed composite structure, the bearing capacity characteristic of the roadbed is changed, the effect of road surface loads on the roadbed is reduced, the bearing capacity and strength of the roadbed are enhanced, and differential settlement of the roadbed is reduced; a bridgehead roadbed drainage system is optimized, and roadbed water accumulation is effectively avoided; durability is good, and stability is high; construction is convenient, and generalization performance is high.
本发明公开了一种防止桥头跳车的桥头路基复合结构，自上而下包括沥青面层、路面结构层、搭板和枕梁；搭板一端搭接在桥台耳背墙的牛腿上、与桥台抵接，另一端搭接在枕梁上，通过钢筋接头实现枕梁与搭板的整体性；搭板下方及枕梁两侧设置第一级配碎石垫层，第一级配碎石垫层内置排水设施；第一级配碎石垫层外侧面包裹无纺土工布反滤层，土工布反滤层上表面与路面结构层相接。承台旁还可设置第二级配碎石垫层，第二级配碎石垫层内设置横向排水设施。本发明还公开了所述桥头路基复合结构的施工方法。本发明的桥头路基复合结构，改变路基持力特征，减少路面载荷对路基的作用，增强路基的承载力和强度，减少路基不均匀沉降；优化桥头路基排水系统，有效避免路基积水；耐久性好，稳定性高；施工方便，推广性强。
Bridgehead roadbed composite structure for preventing bumping at bridgehead and construction method
The invention discloses a bridgehead roadbed composite structure for preventing bumping at a bridgehead. The bridgehead roadbed composite structure comprises an asphalt surface layer, a pavement structure layer, a transition slab and a sleeper beam from top to bottom, one end of the butt strap is lapped on a bracket of an abutment ear back wall and abuts against the abutment, the other end of the butt strap is lapped on the sleeper beam, and the integrity of the sleeper beam and the butt strap is achieved through the steel bar connector; first-grade broken stone hardcore layers are arranged below the butt strap and on the two sides of the sleeper beam, and drainage facilities are arranged in the first-grade broken stone hardcore layers; the outer side face of the first grading broken stone hardcore layer is wrapped with a non-woven geotextile inverted filter layer, and the upper surface of the geotextile inverted filter layer is connected with a pavement structure layer. A second-grade broken stone hardcore can be further arranged beside the bearing platform, and a transverse drainage facility is arranged in the second-grade broken stone hardcore. The invention further discloses a construction method of the bridgehead roadbed composite structure. According to the bridgehead roadbed composite structure, the bearing capacity characteristic of the roadbed is changed, the effect of road surface loads on the roadbed is reduced, the bearing capacity and strength of the roadbed are enhanced, and differential settlement of the roadbed is reduced; a bridgehead roadbed drainage system is optimized, and roadbed water accumulation is effectively avoided; durability is good, and stability is high; construction is convenient, and generalization performance is high.
本发明公开了一种防止桥头跳车的桥头路基复合结构，自上而下包括沥青面层、路面结构层、搭板和枕梁；搭板一端搭接在桥台耳背墙的牛腿上、与桥台抵接，另一端搭接在枕梁上，通过钢筋接头实现枕梁与搭板的整体性；搭板下方及枕梁两侧设置第一级配碎石垫层，第一级配碎石垫层内置排水设施；第一级配碎石垫层外侧面包裹无纺土工布反滤层，土工布反滤层上表面与路面结构层相接。承台旁还可设置第二级配碎石垫层，第二级配碎石垫层内设置横向排水设施。本发明还公开了所述桥头路基复合结构的施工方法。本发明的桥头路基复合结构，改变路基持力特征，减少路面载荷对路基的作用，增强路基的承载力和强度，减少路基不均匀沉降；优化桥头路基排水系统，有效避免路基积水；耐久性好，稳定性高；施工方便，推广性强。
Bridgehead roadbed composite structure for preventing bumping at bridgehead and construction method
一种防止桥头跳车的桥头路基复合结构及施工方法
MA TIANHAO (Autor:in) / HAN HONGSHUAI (Autor:in) / LIU LIANGJUN (Autor:in) / LIU SHUWEI (Autor:in)
29.03.2022
Patent
Elektronische Ressource
Chinesisch
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