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2010年11 期
| 標(biāo)題 |
| 預(yù)應(yīng)力混凝土連續(xù)箱梁橋施工中腹板斜裂縫分析(50 卷) |
| 英文標(biāo)題 |
| Analysis on skew cracking in web of prestressed concrete continuous box-girder bridge during construction |
| 摘要 |
| 白水沖特大橋箱梁在懸臂施工過(guò)程中出現(xiàn)腹板斜裂縫，通過(guò)對(duì)裂縫出現(xiàn)位置、走向和形態(tài)的分析，認(rèn)為裂縫并非受力裂縫?；炷翍?yīng)變測(cè)試結(jié)果表明，張拉鋼束引起的垂直鋼絞線的混凝土橫向膨脹超過(guò)極限拉應(yīng)變，裂縫產(chǎn)生的主因是設(shè)計(jì)中對(duì)錨固區(qū)局部應(yīng)力考慮不足，經(jīng)錨固端一定范圍增 |
| 作者 |
| 新聞作者:郭凡，楊永清，劉國(guó)軍 |
| 關(guān)鍵字 |
