| 水压爆破拆除20 m长钢筋砼预应力空心板危桥 |
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| 引用本文： | 穆大耀,李征文,李金平.水压爆破拆除20 m长钢筋砼预应力空心板危桥[J].爆破,2005,22(4):99-101. |
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| 作者姓名： | 穆大耀 李征文 李金平 |
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| 作者单位： | 昆明理工大学,云南,昆明,650093;云南省铁路总公司,云南,昆明,650118 |
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| 摘 要： | 云南红河勐甸河公路为预应力空心桥,因水毁成为危桥拟予拆除,但要求完好保留一端桥台.经拆除方案论证,利用桥板空心可以注水的结构特征,采用水压爆破法安全拆除.给出了桥梁的结构特征、拆除方案比较,水压爆破药量确定、施工技术和爆破效果.
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| 关 键 词： | 水压爆破 拆除 空心预应力板 危桥 桥台保护 |
| 文章编号： | 1001-487X（2005）04-0099-03 |
| 收稿时间： | 2005-09-10 |
| 修稿时间： | 2005-09-10 |
Demolition of a Dangerous 20 m Prestressed Concrete Cored Slab Bridge by Hydraulic Blasting |
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| MU Da-yao,LI Zheng-wen,LI Jin-ping.Demolition of a Dangerous 20 m Prestressed Concrete Cored Slab Bridge by Hydraulic Blasting[J].Blasting,2005,22(4):99-101. |
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| Authors: | MU Da-yao LI Zheng-wen LI Jin-ping |
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| Affiliation: | 1. Kunming University of Science and Technology, Kunming 650093, China; 2. Yunnan Provincial Railway General Company, Kunming 650118, China |
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| Abstract: | A dangerous prestressed concrete cored slab bridge over the Honghe River in Yunnan Province is to be demolished, but a pier must perfectly be remained. The hydraulic blasting was adopted to safely demolish the bridge after analyzing the blasting programs and utilizing the structural characteristics of cored slab. The structural characteristics of the bridge are presented, the demolition programs are compared, the charge dose of blasting is determined, and the implementation and blasting effectiveness are discussed. |
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| Keywords: | hydraulic blasting demolition prestressed cored slab dangerous bridge pretection of pier |
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