高墩大跨度桥梁设计阶段工程造价控制

Construction Cost Control of High-pier Long-span Bridge at the Design Stage

通过对某高墩大跨度桥梁设计阶段工程造价控制进行阐释,提出基于限额设计的设防高烈度区的高墩大跨度桥梁的抗震优化思路,阐述下部结构墩的优化方法,提出采用预应力混凝土波形钢腹板组合梁、双肢空心薄壁墩、箱型墩的组合刚构桥方案。为提高高墩大跨度桥梁的抗震性能和建设、使用阶段的经济性,预应力混凝土波形钢腹板连续刚构桥适合在我国设防高烈度区推广应用,在限额设计时可优先选用。

Through explaining the construction cost control of a high-pier long-span bridge at the design stage,this paper puts forward the seismic optimization thought of high-pier long-span bridge in high seismic intensity regions based on quota design,and expounds the optimization method of substructure pier.The scheme of Continuous Rigid Frame Bridge with PC Corrugated Steel Webs composite beam,double-leg hollow thin-walled pier and box pier is proposed.In order to improve the seismic performance and the economic efficiency at the construction and use stages of high-pier long-span bridges,PC Continuous Rigid Frame Bridge with Corrugated Steel Webs are suitable for popularization and application in the regions with high seismic intensity in China,and can be preferentially selected in quota design.