摘要
结合后张预应力箱梁施工特点,分析了产生裂缝的原因,指出收缩与温度应力是引起裂缝的主要因素,在此基础上提出了施工裂缝的预防措施,从而使预应力箱梁的施工裂缝得到有效的控制。
Combining the construction features of the post-tensioning prestressed box girders, the paper analyzes the causes of the cracks, points out the contraction stress and thermal stress is the main factors resulting in cracks. Based on this, it points out the prevention measures for the construction cracks, in order to control the construction cracks of the prestressed box girders.
出处
《山西建筑》
2009年第1期179-180,共2页
Shanxi Architecture
关键词
后张预应力
箱梁
施工裂缝
预防措施
post-tensioning prestress, box girders, construction cracks, prevention measures
