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顺德五沙大桥主桥下部基础为:每个主墩下布置11根(?)150cm 嵌岩的钢筋混凝土灌注桩基础;钢筋混凝土低桩承台,尺寸为1350×820×300cm;其主墩是带尖头的长方形钢筋混凝土空心墩,混凝土强度等级为25MPa。主桥上部结构采用三孔预应力钢筋混凝土连续箱梁结构。主箱梁50MPa 预应力钢筋混凝土,是从三个方向施加预应力;纵向采用12(?)15.24/束高强低松驰钢铰线施加预应力;横向间隔50cm 布置一束3(?)15.24高强低松驰钢铰线施加横向预应力;竖向则按40-50cm 间隔布置直径32mmⅣ级精轧螺纹钢筋施加竖向
The foundation of the lower part of the main bridge of the Wusha Bridge in Shunde is as follows: 11 (?) 150cm concrete-encased concrete filled rockfill piles are laid under each main pier; reinforced concrete low-pile cap with a size of 1350 × 820 × 300cm; Elongated rectangular reinforced concrete hollow pier with concrete strength of 25 MPa. The main structure of the main bridge using three holes prestressed concrete continuous box girder structure. The main box girder 50MPa prestressed reinforced concrete is prestressed from three directions; longitudinally using 12 (?) 15.24 / bundle high strength and low relaxation steel hinge prestress; horizontal spacing of 50cm arranged a bundle of 3 (?) 15.24 high strength Low relaxation steel hinge line to impose lateral prestress; Vertical according to 40-50cm spacing arrangement diameter 32mm grade Ⅳ finish rolling rebar to exert vertical