后张法预应力,post-tensioned prestressing
1)post-tensioned prestressing后张法预应力
1.Construction technology ofpost-tensioned prestressing hollow beam of some bridge is a method of bridge conformation construction.某桥后张法预应力空心梁的施工工艺是一种桥梁上构施工方法,总结预应力张拉的监控要素和重点工序、技术,可为公路建设中出现的其他后张法桥梁提供一定的指导作用。
2.pore lay-out,steel bar through,tensioning and jacking inpost-tensioned prestressing of bridge construction.文章主要阐述了后张法预应力在桥梁施工中孔道设置、穿束、张拉、压浆等关键工序的施工和质量控制,并介绍了千斤顶活塞伸长值的理论计算方法。
3.Thepost-tensioned prestressing technology was adopted in the construction of heavy tee girders with 44m span of Shanghai Yangpu Bridge.本文以上海杨浦大桥44m 跨 T 形梁的预制施工为例,提出了重型构件采用后张法预应力技术时对模板、钢筋、混凝土和浇筑工艺的要求。
英文短句/例句
1.post-tensioned prestressing concrete beam后张法预应力混凝土梁
2.post tension concrete后张法预应力混凝土
3.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
4.Tensioning Pre-stressed Concrete Constructs Experiences后张法预应力混凝土梁施工中的经验
5.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
6.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
7.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
8.Precast Technology and Quality Control of 30m Post-tensioned Prestressing I-beam;30米后张法预应力工字梁预制工艺及质量控制
9.On the construction craft of the precasting girder with post-tensioning method prestress后张法预应力预制梁混凝土施工工艺探讨
10.The application of 30 m post-tensioned prestressed concrete box beam vacuum-assisted grouting technology30m后张法预应力混凝土箱梁真空灌浆技术应用
11.Constructive method of back-tension and prestress case beam in Anping River Bridge安平河大桥后张法预应力箱梁施工方法
12.A Study on Prestress Loss Produced by Anchoring Curve Prestressed Bar in Post -tension Method后张法预应力曲线钢筋因锚固产生的预应力损失研究
13.Experimental research on prestress transfer length of prestressed concrete pipe pile by post-tensioning method后张法预应力混凝土管桩预应力传递长度试验研究
14.Construction Method Improvement and Quality Control of Post - Tensioned Concrete Elements;后张法预应力构件施工改进及质量控制
15.Construction Technological and Experimental Research of Post-tensioned Prestressed Concrete Hollow Beams后张法预应力空心板梁施工技术和试验研究
16.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
17.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
18.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
相关短句/例句
post-tensioning后张法预应力
1.According to the disadvantages ofpost-tensioning method prestress structure construction and new construction technology, the application of plastic bellow and vacuum mud jacking technology in Bailuo Road are analyzed from aspects as test gradation, construction, quality control, etc.针对后张法预应力结构施工中出现的不足,结合国内兴起的施工新工艺,从试验配合比、施工工艺、质量控制要点等角度分析了塑料波纹管配合真空辅助压浆技术在百罗路上的应用,有效地保证了压浆的质量。
3)post-tensioned prestress后张法预应力
1.Quality control of the implementation ofpost-tensioned prestress;后张法预应力实施的质量控制
2.Quality control of 25 mpost-tensioned prestressed box beam;25m后张法预应力箱梁的质量控制
3.Description is made of the test on the performance of the strand-end-patterned anchor, including the analysis of the test results, through the example of Ramps A and B on the west approach of Baoshan Bridge in Ningbo using thepost-tensioned prestressed continuous box girders and strand-end-patterned anchors.以宁波招宝山大桥西引桥A、B匝道后张法预应力连续箱梁采用钢绞线压花锚锚固技术的工程实例,叙述了压花锚锚固性能试验中试块尺寸、测点布置、实验装置及加载方法,并作了试验结果分析。
4)empress piece"s method prepares in response to dint concrete后张法预应力砼
5)post-tensioned prestressed beam后张法预应力梁
6)post-tensioned prestressed precasting后张法预应力预制
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。
