摘要
先张预应力空心板、预应力混凝土梁在高等级公路建设中发展很快,特别是跨径在10m～20m以内的简支梁先张预应力空心板和跨径在20m～40m的预应力混凝土梁与其他形式的结构相比,具有使用年限长、变形小、造价低、施工方便等优点,因此有着极强的竞争力,采用相当普遍。
The pre-stressed hollow slab with the span ranging from 10m-20m and pre-stressed concrete girder from 20m- 40m have been widely used in the highway construction. They tend to be long in service life, low in distortion and cost, convenient for the construction, and more competitive.
出处
《交通科技与经济》
2006年第1期40-41,共2页
Technology & Economy in Areas of Communications
关键词
预应力
板梁裂缝
成因
防治
pre-stress
girder cracking
cause of formation
prevention
