A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Method for constructing railway tunnel through open excavation of deep foundation pit
The invention discloses a method for constructing a railway tunnel by open excavation of a deep foundation pit, which comprises the following steps of: constructing an intercepting ditch on the ground, and constructing a dewatering well; constructing a foundation pit protection pile; step-by-step slope excavation is conducted from the original ground, and slope protection is constructed; the foundation pit is excavated to the bottom of a top beam, and the top beam and a cross brace are constructed; the foundation pit continues to be excavated downwards to the bottom of the guide wall, and an underground excavation side guide wall and a large pipe shed are constructed; the foundation pit continues to be excavated downwards to the bottom of a waist beam, the waist beam and a cross brace are constructed, and a tunnel face is closed by adopting C30 reinforced concrete for underground excavation of the side tunnel; the tunnel is continuously excavated to the designed bottom elevation, and a foundation is treated; constructing an inverted arch primary support and an inverted arch lining to a side wall; dismantling a waist beam and a crown beam transverse support, and performing tunnel open cut tunnel arch lining construction; backfilling the top of the open cut tunnel; according to the method, the safety risk of collapse of the tunnel top of the shallow-buried and subsurface-excavated tunnel in complex geologies such as a silt filling stratum can be avoided, working face construction can be independently provided, step-by-step construction from one side of the subsurface hole is not needed, and the construction efficiency is guaranteed.
本发明公开了一种明挖深基坑施工铁路隧道的方法，其步骤包括：地面施工截水沟，并施工降水井；施工基坑防护桩；从原地面逐级放坡开挖，并施工边坡防护；基坑开挖至冠梁底，施作冠梁及横撑；基坑继续下挖至导向墙底，施作暗挖侧导向墙及大管棚；基坑继续下挖至腰梁底，施作腰梁及横撑，暗挖侧隧道采用C30钢筋混凝土封闭掌子面；隧道内继续开挖至设计底标高，基底基地处理；仰拱初支及仰拱衬砌至边墙施工；拆除腰梁、冠梁横向支撑，隧道明洞拱部衬砌施工；明洞顶部回填；本发明所述的方法可以避免淤泥填土地层等复杂地质浅埋暗挖隧道隧顶坍塌的安全风险，可以单独提供工作面施工，不需要从暗洞一侧逐步施工，保证了施工效率。
Method for constructing railway tunnel through open excavation of deep foundation pit
The invention discloses a method for constructing a railway tunnel by open excavation of a deep foundation pit, which comprises the following steps of: constructing an intercepting ditch on the ground, and constructing a dewatering well; constructing a foundation pit protection pile; step-by-step slope excavation is conducted from the original ground, and slope protection is constructed; the foundation pit is excavated to the bottom of a top beam, and the top beam and a cross brace are constructed; the foundation pit continues to be excavated downwards to the bottom of the guide wall, and an underground excavation side guide wall and a large pipe shed are constructed; the foundation pit continues to be excavated downwards to the bottom of a waist beam, the waist beam and a cross brace are constructed, and a tunnel face is closed by adopting C30 reinforced concrete for underground excavation of the side tunnel; the tunnel is continuously excavated to the designed bottom elevation, and a foundation is treated; constructing an inverted arch primary support and an inverted arch lining to a side wall; dismantling a waist beam and a crown beam transverse support, and performing tunnel open cut tunnel arch lining construction; backfilling the top of the open cut tunnel; according to the method, the safety risk of collapse of the tunnel top of the shallow-buried and subsurface-excavated tunnel in complex geologies such as a silt filling stratum can be avoided, working face construction can be independently provided, step-by-step construction from one side of the subsurface hole is not needed, and the construction efficiency is guaranteed.
本发明公开了一种明挖深基坑施工铁路隧道的方法，其步骤包括：地面施工截水沟，并施工降水井；施工基坑防护桩；从原地面逐级放坡开挖，并施工边坡防护；基坑开挖至冠梁底，施作冠梁及横撑；基坑继续下挖至导向墙底，施作暗挖侧导向墙及大管棚；基坑继续下挖至腰梁底，施作腰梁及横撑，暗挖侧隧道采用C30钢筋混凝土封闭掌子面；隧道内继续开挖至设计底标高，基底基地处理；仰拱初支及仰拱衬砌至边墙施工；拆除腰梁、冠梁横向支撑，隧道明洞拱部衬砌施工；明洞顶部回填；本发明所述的方法可以避免淤泥填土地层等复杂地质浅埋暗挖隧道隧顶坍塌的安全风险，可以单独提供工作面施工，不需要从暗洞一侧逐步施工，保证了施工效率。
Method for constructing railway tunnel through open excavation of deep foundation pit
一种明挖深基坑施工铁路隧道的方法
NI PAI (author) / HU BIN (author) / YAO JIANGTAO (author) / CHEN RONGPING (author) / QIU WANBIN (author) / CHEN WEI (author)
2024-12-03
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
Excavation method for foundation pit above operation railway tunnel
| European Patent Office | 2015
| European Patent Office | 2015
Excavation supporting structure for excavation of foundation pit above tunnel
| European Patent Office | 2023