三峡左岸坝后施工栈桥钢箱梁拆除方案  

Schemes for Removing Steel Box-Beams of Construction Trestle at Downstream-Side of Left-Bank Dam-Section of TGP

作　　者：李国勇[1] 刘晖[1] 林光兵[1] 苏振[1] 

机构地区：[1]长江水利委员会设计院枢纽处,湖北武汉430010

出　　处：《湖北水力发电》2006年第2期30-33,共4页Hubei Water Power

摘　　要：三峡二期工程结束后,为拆除坝后120高程施工栈桥,施工单位提出了三个方案,经核算各方案中起重机荷载均超过栈桥预应力混凝土梁的承载能力,因此设计方对拆除方案作了修改,成功地解决了上述问题,文中对此作了详细介绍。When the second phase construction works of TGP is finished, three alternative schemes for removing the steel box-beam of the construction trestle at the downstream-side (elevation 120) of the left-bank dam section are proposed by the construction sector, but after the checking by the design sector of TGP, it is found out that a part of the load-bearing prestressed concrete beams of the trestle are overloaded under the load of heavy crane, so the original schemes are revised and the construction diffculties are solved with success, the detail is described.

关 键 词：施工栈桥 钢箱梁拆除 预应力混凝土梁承载力 大吨位起重机 

分 类 号：U448.1[建筑科学—桥梁与隧道工程]