上盖式高速公路上层桥设计标准对比分析研究

Comparative Analysis and Research on the Design Standards of the Upper Bridge of the Upper Cover Expressway

以新塘立交改造分离式双层桥为背景工程,通过建筑标准和桥梁标准的概念、设计规范、计算结果对比,综合分析了两种标准体系的同异性。建筑规范和桥梁规范的力学原理一致,没有本质区别,指出当恒载水平远远大于活载时,采用建筑规范比桥梁规范偏保守,反之采用桥梁规范计算更为保守。

This article takes the separated double deck bridge as a background project,comprehensively analyzes the similarities and differences between the two standard systems through conceptual comparisons,design specifications,and calculation results.The mechanical principles of the two standard systems are consistent and there is no essential difference between them.When the dead load level is much higher than the live load,using the structural design standard is safer than using the bridge design standard.