采用专用的预应力施加机具和锚具对碳纤维增强聚合物(Carbon Fiber-Reinfrced Polymer,以下简称CFRP)板施加了预应力,然后加固混凝土大比例梁,便于开展有关试验研究.在此基础之上,对一简支混凝土T型铁路桥进行了加固,效果较好.
Large scale concrete beams were strengthened by prestressing CFRP laminate with the special mechanical stressing and anchoring tools, then the strengthened beams were carried out to failure under the monotone load. On the basis of experimental results, the prestressing technique is used to rehabilite a railway simply-supported concrete bridge. The strengthened effect is good through testing the change of crack width and the mid-span deflection.
参考文献
| [1] | 王文炜,赵国藩,黄承逵,任海东.碳纤维布加固已承受荷载的钢筋混凝土梁抗弯性能试验研究及抗弯承载力计算[J].工程力学,2004(04):172-178. |
| [2] | 贺拴海,赵小星,宋一凡,袁旭斌.具有初荷载的钢筋混凝土梁桥粘贴碳纤维布加固试验研究[J].土木工程学报,2005(03):70-76. |
| [3] | 李贵炳,张爱晖,金伟良.持载下外贴纤维布加固RC梁抗弯性能研究[J].浙江大学学报（工学版）,2005(01):70-75. |
| [4] | Garden H.N;Hollaway L.C .An experimental study of the failure modes of reinforeod concrete beams strengthened with prestressed carbon compesite plates[J].COMPOSITES PART B-ENGINEERING,1998,29B:411-424. |
| [5] | 彭飞飞,江世永,谢孝,飞渭,胡云.预应力CFRP布加固混凝土梁不卸载时的受弯性能试验研究[J].四川建筑科学研究,2003(02):39-42,45. |
| [6] | 尚守平,彭晖,童桦,韦东辉,曾令宏.预应力碳纤维布材加固混凝土受弯构件的抗弯性能研究[J].建筑结构学报,2003(05):24-30. |
| [7] | Raafat El-Hacha;R. Gordon Wight;Mark F. Green .Innovative System for Prestressing Fiber-Reinforced Polymer Sheets[J].ACI structural journal,2003(3):305-313. |
| [8] | 刘凤奎,赵志勇,蔺鹏臻.预应力粘钢加固试验研究[J].铁道学报,2004(02):105-110. |
| [9] | 王兴国,周朝阳,曾宪桃,丁亚红.外贴预应力GFRP板加固混凝土梁抗弯试验研究[J].哈尔滨工业大学学报,2005(03):351-354. |
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