结合施工图审查对桥梁墩柱与桩连接构造的讨论  

Discussion on Structural Connections between Bridge Piers and Piles Combined with Construction Drawings Examination

作　　者：沈中治[1] 

机构地区：[1]北京市市政工程设计研究总院有限公司,100082

出　　处：《特种结构》2014年第1期44-49,55,共7页Special Structures

摘　　要：本文首先综合陈述了桥梁墩柱与钻孔桩连接构造的几种型式,包括:现浇混凝土墩柱和桩主筋焊接;现浇混凝土墩柱与桩主筋搭接、钢管混凝土墩柱与桩连接,以及预制墩柱与桩杯口连接等。其中指出了每一种连接构造中的要点及设计中应该注意的问题。然后,由于桥梁规范对墩柱和桩杯口连接型式的设计构造论述很少,故着重介绍了这种连接型式并较详细地叙述了其受力原理。在此基础上,提出了杯口配筋计算公式及柱子插入杯口深度计算公式等等。为了方便理解"定量"的概念,对每一种连接方式都列举了一个计算例题。This article started with introduction of different types of structural connections between bridge piers and piles, including welding of reinforced bars between cast-in-place piers and piles, lapping of reinforced bars between cast-in-place piers and piles, connections between concrete filled steel tubes and piles, and connections between precast piers and cupped piles, etc. It furthermore demonstrated the key points of each type of connections, and the matters which should be paid attention to in design. This article emphasized the connections between piers and cupped piles. The force principles were discussed in details since there are few details stipulated in the bridge design standards on this manner, and calculation formulas on cupped piles reinforcement and on depth requirement that the pier should be inserted into the cup were provided. Examples in calculation have been illustrated for each type of connections to help readers with a quantitative understanding.

关 键 词：钢筋焊接连接 钢筋搭接连接 杯口连接 钢管混凝土墩柱 

分 类 号：U443[建筑科学—桥梁与隧道工程]