某工程预应力空心梁板跨中开裂的原因分析和改进措施

Cause Analysis and Improving Measures for the Cracking of Prestressed Hollow Beam Boards Midspan in a Certain Project

某工程桥梁预应力空心板台座上未张拉梁板跨中出现裂隙,从空心板的设计、施工和商品混凝土配制三方面分析原因,并提出针对性处理意见。后续实践证明,通过改进台座和对商品混凝土生产进行事前质量控制是有效的。

A problem occurred concerning the non-tension beam boards midspan on the bridge prestressed hollow beam boards pedestal crack in a certain Project.This article put forward countermeasures through the design of hollow boards,construction and compound of commodity concrete.This later proved to be effective in the follow-up practice regarding the pedestal improvement and quality control of the commodity concrete in advance.