摘要
通过对典型的钢桥塔塔-基连接构造形式进行数值分析与简化分析,得到了埋入式连接和螺栓锚固式连接的受力特性,并对埋入式连接和螺栓锚固式连接的力学性能进行了比较和分析。结果表明:埋入式连接整体刚度大,竖向抗压承载力高,但当有弯矩作用时,混凝土基础中可能产生拉应力;在钢桥塔水平向荷载作用下,螺栓锚固式连接有较强的抗弯、抗拔能力,但极限抗压承载力相对较小。
The force characteristics of submerged connection and bolt anchored connection were summarized through analyzing the construction form of the typical connection for steel pylon and concrete foundation structures by using finite element models and simplified mechanics models.Also,the mechanics performances of the two connections were compared and analyzed.The results indicate that submerged connection has powerful integer rigidity and vertical compression bearing capacity,but there maybe occur tensile stress in the concrete of the upper part of foundation when bending moment exists.Bolts anchored connection has strong capacity of bending resistance and withdrawal resistance under the horizontal loads of steel pylon,but the ultimate compression bearing capacity will be smaller relatively.
出处
《建筑科学与工程学报》
CAS
2010年第2期89-95,共7页
Journal of Architecture and Civil Engineering
基金
国家西部交通建设科技项目(200431822317)
关键词
钢桥塔
混凝土基础
有限元模型
埋入式连接
螺栓锚固式连接
steel pylon
concrete foundation
finite element model
submerged connection
bolt anchored connection
