摘要
在高填方区域,填筑土体对既有建筑表面的土压力会因土体的沉降而产生一摩阻力,此力将与桥墩基础设计荷载共同长期作用于基础本体及周围土体,对基桩承载能力形成威胁。阻止或隔离此力对基桩的直接作用对于既有构筑物的安全极为重要,采用钢套管隔离可取得较好的效果。分析了桥墩的实际受力情形,并介绍了钢套管的施工方法及其效果。
In virtue of the sedimentation of the soil, the pressure on the building surface, which was caused by the filled soil, would bring a friction in the high filled area. In company with the designed load, the friction would act on the foundation and the soil around chronically, which was a challenge to the carrying capacity of the pier and foundation. In view of the security of the building, it is very important to stop or insulate the effect of the friction, steel thimble could play a good role in this condition. Accordingly, this paper analyzed the bearing load of the pier practically, and introduced the constructing technique as well as the effect of the steel thimble.
出处
《石家庄铁路职业技术学院学报》
2005年第2期25-29,共5页
Journal of Shijiazhuang Institute of Railway Technology
关键词
桥墩
负摩阻力
隔离
钢套管
高填方区域
high filled piers negative friction insulate steel thimble
