A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Local blasting demolition method for unqualified piers
The invention discloses a partial blasting demolition method for an unqualified pier. The method comprises the following steps that S1, the blasting collapse direction is determined according to the surrounding environment of the unqualified pier; s2, designing a blasting notch according to the collapse direction: upwards forming the blasting notch with the height of h in the position, away from a bearing platform at the lower end of the unqualified bridge pier, of the unqualified bridge pier, and forming a plurality of first cutting areas and first hole distribution areas which are distributed at intervals on a blasting front end face notch, located on the front end face of the collapse direction, of the blasting notch, the first cutting area penetrates through the side wall of the unqualified pier; second cutting areas with gradually decreased heights are formed in blasting side surface notches, located on the two side edges of the collapse direction, of the blasting notch, and second hole distribution areas are distributed on the sides, located in the cutting direction, of the second cutting areas; s3, design of blasting holes; s4, the explosive loading amount of the blasting holes is calculated; and S5, designing a detonating network. According to the dismantling method, the pier dismantling construction period is shortened, the dismantling cost is reduced, and meanwhile it is guaranteed that the bearing platform and the pile foundation below the pier are not damaged.
本发明公开了不合格桥墩局部爆破拆除方法，方法步骤如下：S1：根据不合格桥墩的周边环境确定爆破倒塌方向；S2：根据倒塌方向进行爆破切口的设计：在不合格桥墩距离其下端的承台处向上开设高度为h的爆破切口，爆破切口位于倒塌方向前端面的爆破前端面切口开有若干间隔分布的第一切割区域和第一布孔区域，第一切割区域贯通不合格桥墩的侧壁；爆破切口位于倒塌方向两侧边的爆破侧面切口开有高度递减的第二切割区域，第二切割区域位于切割方向的一侧分布有第二布孔区域；S3：爆破炮孔的设计；S4：爆破炮孔装药量的计算；S5：起爆网路的设计。本发明的拆除方法在缩短桥墩拆除工期和降低拆除成本的同时，保证了桥墩下方的承台和桩基不被破坏。
Local blasting demolition method for unqualified piers
The invention discloses a partial blasting demolition method for an unqualified pier. The method comprises the following steps that S1, the blasting collapse direction is determined according to the surrounding environment of the unqualified pier; s2, designing a blasting notch according to the collapse direction: upwards forming the blasting notch with the height of h in the position, away from a bearing platform at the lower end of the unqualified bridge pier, of the unqualified bridge pier, and forming a plurality of first cutting areas and first hole distribution areas which are distributed at intervals on a blasting front end face notch, located on the front end face of the collapse direction, of the blasting notch, the first cutting area penetrates through the side wall of the unqualified pier; second cutting areas with gradually decreased heights are formed in blasting side surface notches, located on the two side edges of the collapse direction, of the blasting notch, and second hole distribution areas are distributed on the sides, located in the cutting direction, of the second cutting areas; s3, design of blasting holes; s4, the explosive loading amount of the blasting holes is calculated; and S5, designing a detonating network. According to the dismantling method, the pier dismantling construction period is shortened, the dismantling cost is reduced, and meanwhile it is guaranteed that the bearing platform and the pile foundation below the pier are not damaged.
本发明公开了不合格桥墩局部爆破拆除方法，方法步骤如下：S1：根据不合格桥墩的周边环境确定爆破倒塌方向；S2：根据倒塌方向进行爆破切口的设计：在不合格桥墩距离其下端的承台处向上开设高度为h的爆破切口，爆破切口位于倒塌方向前端面的爆破前端面切口开有若干间隔分布的第一切割区域和第一布孔区域，第一切割区域贯通不合格桥墩的侧壁；爆破切口位于倒塌方向两侧边的爆破侧面切口开有高度递减的第二切割区域，第二切割区域位于切割方向的一侧分布有第二布孔区域；S3：爆破炮孔的设计；S4：爆破炮孔装药量的计算；S5：起爆网路的设计。本发明的拆除方法在缩短桥墩拆除工期和降低拆除成本的同时，保证了桥墩下方的承台和桩基不被破坏。
Local blasting demolition method for unqualified piers
不合格桥墩局部爆破拆除方法
FENG TAO (author) / WANG YUAN (author) / DONG XINGDE (author) / GU LIUBIN (author) / SUN ZHENG (author) / ZENG LINGJUN (author)
2022-12-30
Patent
Electronic Resource
Chinese