摘要
连续刚构桥在竖向荷载作用下,梁的弯矩通常比同等跨径连续梁或简支梁小,其跨越能力大于普通梁桥。因此,预应力混凝土刚构桥是目前大跨径桥梁的主要桥型。连续刚构桥桥墩常用型式有双薄壁墩与单薄壁墩两种型式。文中对西藏某三跨连续刚构桥的桥墩型式进行了比较分析。本桥的设计与建成为同类桥梁的建设提供一定经验和借鉴。
Under the action of vertical load,the bending moment of continuous rigid frame bridge is usually smaller than that of continuous beam or simply supported beam with the same span and its span capacity is larger than that of ordinary beam bridge.Therefore,prestressed concrete rigid frame bridge is the main type of long-span bridge.There are two common types of piers of continuous rigid frame bridge:double thin wall pier and single thin wall pier.In this paper,the pier types of a three span continuous rigid frame bridge in Tibet are compared and analyzed.The design and construction of this bridge can provide certain experience and reference for the construction of similar bridges.
作者
吕士军
LV Shijun(The Sixth Branch of Tianjin Urban Construction Design Institute Co.,Ltd.,Hefei,Anhui,231600,China)
关键词
刚构桥
双薄壁墩
单薄壁墩
结构设计
rigid frame bridge
double thin wall pier
single thin wall pier
structural design
