A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Tunnel foundation piled raft structure construction method based on railway engineering
The invention relates to the technical field of tunnel foundation piled rafts, in particular to a construction method of a tunnel foundation piled raft structure based on railway engineering, which comprises the following steps: lowering the water level, lowering the water level under a tunnel needing to be excavated, and ensuring excavation and foundation structure construction under the condition of no water; manual excavation is conducted, the surface needing to be excavated is manually excavated, a soil layer is manually cleaned, and overexcavation or foundation soil damage is avoided; and mechanically excavating. The steel plate is placed at the bottom of the foundation pit, when concrete is poured on the steel plate, the contact area of the steel plate and the soil layer is far larger than the contact area of the concrete body and the soil layer, the larger the area is, the smaller the pressure is, the steel plate is difficult to move towards the soil layer under the same pressure of the upper concrete, and the concrete is isolated outside the soil layer; the calculated concrete amount is consistent with the actually applied concrete amount, the situation that the concrete drills into the soil layer and is not enough is avoided, budget is saved, and settlement of the concrete is slowed down.
本发明涉及隧道基底桩筏技术领域，具体为一种基于铁道工程的隧道基底桩筏结构施工方法，包括降低水位，对需要开挖的隧道下的水位进行下降，保证在无水的情况下进行开挖和基础结构施工；人工开挖，对需要开挖的表面进行人工开挖，土层人工清理，避免超挖或破坏基土；机械开挖。本发明通过在基坑底部放置钢板，当混凝土被浇筑在钢板上，钢板与土层的接触面积远大于混凝土本体与土层的接触面积，面积越大压强越小，在受到上方混凝土同样的压力时，钢板难以向土层移动，混凝土被隔绝在土层外，做到了计算好的混凝土量与实际应用的混凝土量保持一致，避免出现混凝土钻入土层中，混凝土不够用的情况，节省了预算，且减缓了混凝土的沉降。
Tunnel foundation piled raft structure construction method based on railway engineering
The invention relates to the technical field of tunnel foundation piled rafts, in particular to a construction method of a tunnel foundation piled raft structure based on railway engineering, which comprises the following steps: lowering the water level, lowering the water level under a tunnel needing to be excavated, and ensuring excavation and foundation structure construction under the condition of no water; manual excavation is conducted, the surface needing to be excavated is manually excavated, a soil layer is manually cleaned, and overexcavation or foundation soil damage is avoided; and mechanically excavating. The steel plate is placed at the bottom of the foundation pit, when concrete is poured on the steel plate, the contact area of the steel plate and the soil layer is far larger than the contact area of the concrete body and the soil layer, the larger the area is, the smaller the pressure is, the steel plate is difficult to move towards the soil layer under the same pressure of the upper concrete, and the concrete is isolated outside the soil layer; the calculated concrete amount is consistent with the actually applied concrete amount, the situation that the concrete drills into the soil layer and is not enough is avoided, budget is saved, and settlement of the concrete is slowed down.
本发明涉及隧道基底桩筏技术领域，具体为一种基于铁道工程的隧道基底桩筏结构施工方法，包括降低水位，对需要开挖的隧道下的水位进行下降，保证在无水的情况下进行开挖和基础结构施工；人工开挖，对需要开挖的表面进行人工开挖，土层人工清理，避免超挖或破坏基土；机械开挖。本发明通过在基坑底部放置钢板，当混凝土被浇筑在钢板上，钢板与土层的接触面积远大于混凝土本体与土层的接触面积，面积越大压强越小，在受到上方混凝土同样的压力时，钢板难以向土层移动，混凝土被隔绝在土层外，做到了计算好的混凝土量与实际应用的混凝土量保持一致，避免出现混凝土钻入土层中，混凝土不够用的情况，节省了预算，且减缓了混凝土的沉降。
Tunnel foundation piled raft structure construction method based on railway engineering
一种基于铁道工程的隧道基底桩筏结构施工方法
DAI LIANGYAN (author) / ZHANG ZEQIANG (author) / LI RUNPU (author)
2024-02-13
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
Construction method of karst tunnel foundation piled raft structure
| European Patent Office | 2022
European Patent Office | 2024
| European Patent Office | 2024
| TIBKAT | 1976
| NTIS | 1976