超长预应力混凝土框架梁的布索方案  

Tendon Disposition Options in Extra-Long Post-Tensioned Concrete Frame Beams

作　　者：赵勇[1] 程浩[1] 李伟兴[1] 季跃[1] 

机构地区：[1]同济大学,上海200092

出　　处：《结构工程师》2004年第6期6-10,共5页Structural Engineers

摘　　要：确定预应力筋布索方案是超长预应力混凝土结构设计的一项关键内容。结合若干工程成功经验.就满足规范构造要求、减少摩擦损失、预应力筋有效连接、张拉锚固节点处理和无粘结预应力筋的应用等问题进行讨论并提出相关的建议,可为设计及施工提供参考。The tendon disposition option is an important part in the design of extra-long post-tensioned concrete frames. Combining the successful experiences in some projects, some problems are discussed, such as the requirements of codes, methods for reducing the prestressed losses due to friction, effective connections of tendons, detail design of anchorage-seating joints and the use of unbonded post-tensioned tendons, etc. . Mean while some recommendations are presented, which may be regarded as references for similar projects.

关 键 词：布索 框架梁 超长 无粘结预应力筋 预应力混凝土结构 锚固节点 张拉 方案 施工 工程 

分 类 号：TU378[建筑科学—结构工程] TU393.3