大跨径预应力混凝土箱梁开裂机理与预防措施

Approach to Cracking Mechanism and Preventive Measures of Large-span Prestressed Box Beam

该文在详细调查的基础上分析了广西壮族自治区来宾红水河二桥主桥箱梁出现裂缝的原因,并根据相关规范对桥梁的施工和设计进行了优化,采取了改进措施,为预应力连续刚构桥的施工和养护提供了可资借鉴的经验。

On the basis of particular survey, the article analyzes the reasons of cracks in the box beam of the main bridge of Hongshui River No.2 Bridge in Laibin City of Guangxi Province. And according to the relative standards, the article optimizes the construction and design of the bridge, and takes the improved measures, which can provide the experience for the construction and maintenance for prestressed continuous rigid frame bridge.