Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method for ultra-short-distance side-penetrating bridge pile foundation of metro interval tunnel
The invention relates to the technical field of metro interval tunnel construction, in particular to a metro interval tunnel ultra-short-distance side-penetrating bridge pile foundation construction method when a tunnel laterally penetrates through a bridge pile foundation in an ultra-short-distance mode, and particularly relates to a metro interval tunnel ultra-short-distance side-penetrating bridge pile foundation construction method. The risks of water inrush, mud inrush, collapse, roof caving and the like can be reduced through surrounding rock improved and pre-reinforced through grouting materials, before construction, the magnetic logging method is used for observing magnetic field abnormity to determine the length of pile foundation steel bars, and then the pile bottom elevation is determined. The pile foundation side soil body is prevented from being exposed to an unsupported free face in a large area for a long time, the influence of excavation on the soil body around the pile foundation can be reduced to the maximum extent through the temporary vertical support, meanwhile, the pile foundation can pass through the soil body around the pile foundation as soon as possible, closed support is formed in time, and the construction progress and the safety in the construction process are greatly improved.
本发明涉及地铁区间隧道施工技术领域，尤其是隧道超近距侧穿桥梁桩基时，具体是一种地铁区间隧道超近距侧穿桥梁桩基施工方法，本发明为，本工法采用帷幕注浆进行隧道周围的土体的加固，通过注浆材料改善和预加固的围岩能够降低突水涌泥及坍塌冒顶等风险，施工前利用磁测井法观测磁场异常来确定桩基钢筋长度，进而确定桩底高程，本工法通过保留桩基靠近隧道的一部分土体并加以临时竖撑支护，避免了桩基侧土体长时间大面积暴露于未支护的临空面，而通过临时竖撑也能最大限度减小桩基周围土体受开挖的影响，同时能够尽快通过桩基周围土体并及时形成闭合支护，极大提高了施工进度以及施工过程中的安全性。
Construction method for ultra-short-distance side-penetrating bridge pile foundation of metro interval tunnel
The invention relates to the technical field of metro interval tunnel construction, in particular to a metro interval tunnel ultra-short-distance side-penetrating bridge pile foundation construction method when a tunnel laterally penetrates through a bridge pile foundation in an ultra-short-distance mode, and particularly relates to a metro interval tunnel ultra-short-distance side-penetrating bridge pile foundation construction method. The risks of water inrush, mud inrush, collapse, roof caving and the like can be reduced through surrounding rock improved and pre-reinforced through grouting materials, before construction, the magnetic logging method is used for observing magnetic field abnormity to determine the length of pile foundation steel bars, and then the pile bottom elevation is determined. The pile foundation side soil body is prevented from being exposed to an unsupported free face in a large area for a long time, the influence of excavation on the soil body around the pile foundation can be reduced to the maximum extent through the temporary vertical support, meanwhile, the pile foundation can pass through the soil body around the pile foundation as soon as possible, closed support is formed in time, and the construction progress and the safety in the construction process are greatly improved.
本发明涉及地铁区间隧道施工技术领域，尤其是隧道超近距侧穿桥梁桩基时，具体是一种地铁区间隧道超近距侧穿桥梁桩基施工方法，本发明为，本工法采用帷幕注浆进行隧道周围的土体的加固，通过注浆材料改善和预加固的围岩能够降低突水涌泥及坍塌冒顶等风险，施工前利用磁测井法观测磁场异常来确定桩基钢筋长度，进而确定桩底高程，本工法通过保留桩基靠近隧道的一部分土体并加以临时竖撑支护，避免了桩基侧土体长时间大面积暴露于未支护的临空面，而通过临时竖撑也能最大限度减小桩基周围土体受开挖的影响，同时能够尽快通过桩基周围土体并及时形成闭合支护，极大提高了施工进度以及施工过程中的安全性。
Construction method for ultra-short-distance side-penetrating bridge pile foundation of metro interval tunnel
一种地铁区间隧道超近距侧穿桥梁桩基施工方法
JIANG XINQIANG (Autor:in) / WANG LEI (Autor:in) / GUO XIAOLONG (Autor:in) / ZHAO TENG (Autor:in) / LIU CHANG (Autor:in) / ZHU NAN (Autor:in) / LUO JIAO (Autor:in) / ZHOU DENGRONG (Autor:in) / HUANG TAIQIANG (Autor:in) / ZHANG JUNRU (Autor:in)
02.02.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E21D
SHAFTS
,
Schächte
/
E02D
FOUNDATIONS
,
Gründungen
/
E21F
Sicherheitsvorrichtungen, Förderung, Auffüllen oder Bergversatz, Rettungswesen, Bewetterung oder Entwässerung in oder von Gruben oder Tunnels
,
SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINAGE IN OR OF MINES OR TUNNELS
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