论文简介： Abstract: An analytical method for T-section R.C. beams strengthened with externally bonded carbon fiber reinforced plastic (CFRP) sheets was proposed according to different failure modes. At the same time, the effective strain of CFRP was advanced. Finally, the author put forward designed formulae based on the design code.
Abstract: An analytical method for T-section R.C. beams strengthened with externally bonded carbon fiber reinforced plastic (CFRP) sheets was proposed according to different failure modes. At the same time, the effective strain of CFRP was advanced. Finally, the author put forward designed formulae based on the design code.
Keywords: CFRP；strengthening；T-section R.C. beams；flexural capacity
使用不当、钢筋腐蚀、设计或施工错误都会造成钢筋混凝土构件的刚度、抗弯承载力不足或裂缝开展过宽而需要补强、加固。碳纤维纤维复合物（CFRP）由于其自身的优点,如强度高、重量低、易于施工、耐腐蚀等[1、2]，近年来在我国的应用逐渐增多。本文基于《公路钢筋混凝土及预应力混凝土桥涵设计规范（JTG D62）》[3]（以下简称《公路桥规》），给出了钢筋混凝土T型截面梁抗弯承载力计算公式及工程实用设计公式。
1 正截面抗弯承载力计算
1.1 基本假定
⑴平截面假定。
⑵不考虑混凝土的抗拉强度。
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