后张预应力,post-tensioned
1)post-tensioned后张预应力
1.Research on limit amounts of reinforcement and prestressed tendon on the rigid support section ofpost-tensioned concrete frame beams;后张预应力混凝土框架梁刚接端截面配筋限值的研究
英文短句/例句
1.Batch Prestress Loss of Concrete Pipe Pile by Post-Tensioning Method后张预应力混凝土管桩分批张拉预应力损失
2.Equivalent Loads Analysis on Post-tensioned Prestressed Concrete Structure;后张预应力混凝土结构等效荷载分析
3.Shallow to talk prevention measure of prestress preparing pipe pressing grout common disease浅谈后张预应力管道压浆通病的预防措施
4.In Back-Prestressing Force Frame Work, the Concept of "Sub-Internal Force" Caused by Prestressing Force and the Method for It;后张预应力框架结构中，预应力引起结构"次内力"的概念及计算方法
5.The Study of Design and Application for the Post-Tensioning Pre-Stressed Reinforced Concrete Hollow Slab;后张预应力混凝土空心板的设计应用研究
6.post-tensioned prestressing concrete beam后张法预应力混凝土梁
7.post tension concrete后张法预应力混凝土
8.Post-tensioning Producing Method of the Prefabrication of 40 m Prestress Box后张法40m预应力箱梁预制施工技术
9.The post tensioned prestressed construction control points of prestressed concrete box beam预应力混凝土箱梁后张法预应力施工控制要点
10.The Application of the Post-tensioned Binder-free Prestressed Hollow Floor-plate后张法无黏结预应力空心楼板的应用
11.Keywords: post-tension process,unbounded prestressed; overlong concrete structure.无结预应力，后张工艺，超长混凝土结构。
12.Tensioning Pre-stressed Concrete Constructs Experiences后张法预应力混凝土梁施工中的经验
13.On the control points of the post-tensioned prestressed hollowslab beam后张法预应力空心板梁施工控制要点
14.Analysis on post-tensioned prestressed beam crack and treatment measures后张法预应力梁裂缝分析与处理措施
15.The discussion on the Construction of Post Stressed RC problems in Bridge Project Based on Post tensioned measures预应力混凝土梁板后张法施工的探讨
16.Calculation of Extension Value about Post-tensioning Prestress Steel Wire Strand后张法预应力板钢丝束张拉伸长值的计算
17.Tension Effect Test of Bonded Post-tensioned Prestressed Concrete Beam后张有粘结预应力混凝土梁张拉效果检测
18.Analysis of bond extremities" interfacial stress of prestressed CFRP laminate after releasing预应力碳纤维片材张放后端部粘结应力分析
相关短句/例句
post-tensioned prestress后张预应力
1.Longitudinal stress computation ofpost-tensioned prestressing concrete circular tunnel;后张预应力圆形隧洞衬砌纵向应力计算
2.Inpost-tensioned prestressed concrete structures, anchorage zones are suchregions through which prestress is introduced into structures, so it is very important tomake it safe by appropriate design.后张预应力混凝土锚固区起着将集中作用的预压力均匀扩散、传递给混凝土构件的作用，锚固区可分为局部锚固区与总体锚固区两部分。
3)post-tensioning prestress后张预应力
1.On the prevention of the cracks in thepost-tensioning prestressed box girders construction后张预应力箱梁施工裂缝的预防
4)post-tensioned prestressing后张预应力
5)post-tensioned pre-stressed technology后张预应力技术
6)post-tension of pre-stress预应力后张拉
延伸阅读
预应力钢筋张拉设备使预应力混凝土结构里的钢筋产生并保持预应力的设备。分手动、电动和液压传动张拉机等。液压张拉机拉力大、重量轻，使用灵活方便。按钢筋张拉工艺有先张法和后张法两种。先张法用的夹具可以重复使用；后张法用的锚具将成为构件的一部分，不能取下再用。常采用不同的夹具来锚固各种钢筋，圆锥形夹具用于锚固直径12～16毫米的钢筋，镦头梳筋板夹具适用于板类构件中张拉低碳冷拔钢丝，波形夹具可成批张拉和锚固钢丝,螺杆锥形夹具则用于钢筋束的后张自锚。作业时,钢筋的一端锚固，另一端由张拉机通过夹具把钢筋夹紧张拉。穿心式张拉机作业时将钢筋穿入，打开前油嘴，由液压泵把高压油送入后油嘴，使张拉缸后退，利用尾部锚具将钢筋锚固并张拉。张拉到所需应力值后，关闭后油嘴。前油嘴进油，活塞向前推出，顶压锚塞，使钢筋锚固。回程时，活塞靠弹簧复位，完成张拉。管类构件可采用环向预应力缠筋机，在管坯上缠绕预应力螺旋钢筋（见图）。作业时,管坯由卡盘夹持，通过调直张紧滚轮在管坯上绕4～5圈应力不大的螺旋钢筋,此后液压缸使两侧的张紧轮分开，钢筋便张拉到预定的应力值。此时管坯旋转，并开动小车，管体上就连续绕上预应力螺旋筋。螺距的大小由小车的行走速度来控制。随着预应力构件生产批量的增加，一些专用的连续张拉设备得到发展，其特点是成组张拉效率高，需要的张拉力较小，可双向交叉配筋，张拉均匀，易于实现自动化生产。
