Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses a construction method for blasting demolition of a prestressed concrete continuous box girder bridge, and relates to the technical field of buildings. The construction method for blasting demolition of the prestressed concrete continuous box girder bridge comprises the following specific operation steps that firstly, a plurality of notches are cut in the top of a bridge deck box girder, the size of the notches should be larger than 2 * 1 m, it is guaranteed that workers can enter the box girder to conduct construction operation, and compared with hole arrangement at the bottom of the box girder at the bridge bottom, the time for erecting a frame is saved; compared with a traditional mechanical bridge demolition construction scheme, the construction method for blasting demolition of the prestressed concrete continuous box girder bridge has the advantages that in-situ collapse blasting demolition is conducted on the prestressed concrete continuous box girder bridge through the millisecond blasting technology, and the problem of synchronous release of prestress in the bridge demolition process can be effectively solved; and the construction risk of lateral overturning of the bridge in the mechanical dismantling process is effectively avoided.
本发明公开了一种预应力混凝土连续箱梁桥爆破拆除的施工方法，涉及建筑技术领域。该预应力混凝土连续箱梁桥爆破拆除的施工方法，具体操作如下：步骤一：在桥面箱梁顶部切若干个切口，切口尺寸应大于2×1m，保证工人能进入箱梁内部施工作业，相比于在桥底对箱梁底部布孔，省去搭架子的时间。该预应力混凝土连续箱梁桥爆破拆除的施工方法，相比于传统的机械拆除桥梁施工方案，本发明利用微差爆破技术对预应力混凝土连续箱梁桥进行原地坍塌爆破拆除，能够有效解决桥梁拆除过程中预应力同步释放的难题，有效避免了机械拆除过程中桥梁侧向倾覆的施工风险。
The invention discloses a construction method for blasting demolition of a prestressed concrete continuous box girder bridge, and relates to the technical field of buildings. The construction method for blasting demolition of the prestressed concrete continuous box girder bridge comprises the following specific operation steps that firstly, a plurality of notches are cut in the top of a bridge deck box girder, the size of the notches should be larger than 2 * 1 m, it is guaranteed that workers can enter the box girder to conduct construction operation, and compared with hole arrangement at the bottom of the box girder at the bridge bottom, the time for erecting a frame is saved; compared with a traditional mechanical bridge demolition construction scheme, the construction method for blasting demolition of the prestressed concrete continuous box girder bridge has the advantages that in-situ collapse blasting demolition is conducted on the prestressed concrete continuous box girder bridge through the millisecond blasting technology, and the problem of synchronous release of prestress in the bridge demolition process can be effectively solved; and the construction risk of lateral overturning of the bridge in the mechanical dismantling process is effectively avoided.
本发明公开了一种预应力混凝土连续箱梁桥爆破拆除的施工方法，涉及建筑技术领域。该预应力混凝土连续箱梁桥爆破拆除的施工方法，具体操作如下：步骤一：在桥面箱梁顶部切若干个切口，切口尺寸应大于2×1m，保证工人能进入箱梁内部施工作业，相比于在桥底对箱梁底部布孔，省去搭架子的时间。该预应力混凝土连续箱梁桥爆破拆除的施工方法，相比于传统的机械拆除桥梁施工方案，本发明利用微差爆破技术对预应力混凝土连续箱梁桥进行原地坍塌爆破拆除，能够有效解决桥梁拆除过程中预应力同步释放的难题，有效避免了机械拆除过程中桥梁侧向倾覆的施工风险。
Construction method for blasting demolition of prestressed concrete continuous box girder bridge
一种预应力混凝土连续箱梁桥爆破拆除的施工方法
12.12.2023
Patent
Elektronische Ressource
Chinesisch
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