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- Each specimen was pre loaded under two symmetrical concentrated loads to occur a crack and failure, then unloaded and strengthened by bonding CFRP sheet on its side tensile faces. 研究采用在混凝土构件侧面粘贴碳纤维布这种新形式加固受弯构件的受力性能。
- Such factors as the compression strength of timber,flaws of timber columns,stress modes,enwrapping forms of CFRP sheets are influenced the bearing capacity of strengthened columns. 木材自身强度、木柱的缺陷、受力方式、碳纤维布间距及碳纤维布层数对加固柱极限承载力均有影响。
- The pre stressed anchoring piles aere used to controll large-scale landslides and creat flats to build. 本文论述了预应力锚拉桩在库区大型滑坡防治中的应用成果 ,这种方法不仅能有效地控制滑坡体的稳定性 ,同时 ,也能根据移民工程要求提供适宜的建设用地 ;
- The acceptance test results showed that the construction of pre stressed anchorage cable of permanent ship lock meets the requirements of design. 验收试验成果表明,永久船闸预应力锚索的施工符合设计要求。
- CFRP sheets strengthening is widely used in civil projects and much attentions is paid to their durability. 摘要CFRP加固广泛应用于土木工程，对耐久性能的研究已得到了工程界的重视。
- The concrete spiral case of the GHS is reinforced with the pre stressed anchorage cable, which is the first case in China. 高坝洲水电站混凝土蜗壳采用预应力锚索加固,这在国内尚属首例,其预应力锚索包括水平环向锚索和垂直竖向锚索。
- Due to the high water head of the GHS, the design unit put forward a suggestion of using the pre stressed reinforced concrete spiral case. 高坝洲水电站由于设计水头较高,设计单位建议采用预应力钢筋混凝土蜗壳。
- CFRP sheets can directly strengthen cores of beam-column joints in one-way frames to improve their shear behavior under seismic load. 混凝土平面框架节点核心区不存在直交梁的影响,可以应用碳纤维布直接进行加固,以增强地震作用下节点核心区的抗剪承载力。
- The research was instructive and useful in strengthening of RC members with externally bonded CFRP sheets under small eccentric tension. 所得研究成果对二次受力钢筋混凝土小偏心受拉加固具有理论指导意义和工程应用价值。
- In three desilting tunnels of Xiaolangdi Multipurpose Project, over 70% tunnel wall were lined with non cohesive pre stressed concrete by the post tensioning method. 小浪底水利枢纽工程的3条排沙洞，洞身70%25以上采用后张法无粘结预应力混凝土衬砌。
- Finite Element Analytical Models for Reinforced Concrete Columns Reinforced with CFRP Sheets[J].Acta Materiae Compositae Sinica,2005,22(4):156-164. CFRP纤维布加固RC柱的有限元分析模型[J].;复合材料学报;2005;22(4):156-164
- The results indicate that CFRP sheet can be applied to the strengthening of concrete bridges. 分析结果表明,CFRP布加固可应用于大型钢筋混凝土桥梁。
- The test showed that externally bonded CFRP sheets of U-wraps can improve the shear fatigue performance and increase the fatigue life of reinforced concrete beam significantly. 因此，粘贴碳纤维布可以较大提高损伤混凝土梁的抗剪疲劳性能，延长损伤混凝土结构的使用寿命。
- Abstract： In order to satisfy the requirements of both ultimate limit state and servicing limit state unbonded partially pre stressed concrete flexural members must be reasonably designed. 摘 要： 为满足承载能力极限状态及正常使用极限状态的要求，必须对无粘结部分预应力混凝土受弯构件进行合理设计。
- In order to investigate the law of changing property of CFRP fabric under different environments, 200 CFRP sheets under the environment of north China and northwest China were tested on natural aging. 摘要为了掌握结构加固用碳纤维布在不同环境条件下的性能变化规律，进行了华北地区和西北地区不同环境条件下两种共计200个碳纤维布试件的自然老化试验。
- The numerical results show that with sufficient U-jacketing bond, thedebonding failure can be avoided for pre-stressed CFRP sheets.And thestrength of CFRP sheets can be fully used. 研究表明,在锚固充足的情况下,对CFRP布施加预应力,可以使CFRP布的强度得到充分发挥。
- Studies and tests were done on the durability of common CFRP sheets.Influence to strength, extensibility and Young's modulus of CFRP sheets was investigated in nature aging environment of north China. 通过对目前土木工程加固常用的几种碳纤维片材耐久性进行的试验研究，考察在华北地区自然环境条件下老化对其抗拉强度、伸长率和弹性模量等的影响。
- continuous pre stressed reinforced concrete beam 预应力混凝土连续梁
- pre stressed lauice shell structure 预应力网壳结构
- The beam-column joint not only is the key of the aseismic design for reinforced concrete frame, but also is the difficult point of the aseismic strengthening for the CFRP sheet frame. 梁柱节点是钢筋混凝土框架抗震设计的重要部位,也是碳纤维布框架抗震加固的难点和重点。
