新型自锚式悬索桥线形控制技术

浙江海盐塘桥采用新型的钢筋混凝土梁自锚式悬索桥，其设计特点为：主梁不设纵向预应力钢束，塔顶不设鞍座，主缆、吊杆为钢绞线索，主缆梁端锚固，塔顶张拉。结合海盐塘桥施工，介绍了自锚式悬索桥主梁施工支架的构造、施工和桥梁施工线形控制等关键技术。

Lines Control Technique for Self-Anchored Suspension Bridge

Haiyantang bridge in Zhejiang province is a new type of self-anchored suspension bridge with reinforced concrete beam. Its features in design include beam without prestressed reinforcement, towers without saddle, main cable and hanger of strands, main cable anchored at the end of beam and stretched on the top of tower. Based on the construction of Haiyantang bridge, the structures and construction of main beam bracket and line control in the building process for self-anchored suspension bridge are introduced in this paper.