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A platform for research: civil engineering, architecture and urbanism
Road tunnel construction structure above existing subway tunnel, foundation slab cushion layer and waterproof manufacturing method
The invention discloses a foundation slab cushion layer and waterproof manufacturing method. The foundation slab cushion layer and waterproof manufacturing method comprises the following steps that S1, a soil body from the ground to the position away from the top face of a subway tunnel by a preset distance is reinforced; s2, a foundation pit is excavated in the reinforced soil body to the designed depth, and the remaining reinforced soil body below the bottom face of the foundation pit is a cement reinforced soil body and serves as a foundation bottom plate cushion layer; s3, cement powder is scattered on the top face of the cement reinforced soil body to serve as a base face; and S4, a cement-based capillary crystalline waterproof agent is scattered on the cement powder to serve as a waterproof layer. The cement-reinforced soil body below the bottom surface of the foundation pit is adopted to replace plain concrete to serve as the foundation slab cushion layer, the manufacturing time of the foundation slab cushion layer is shortened, the cement powder and the cement-based capillary crystalline waterproof agent are directly and sequentially scattered on the top surface of the leveled cement-reinforced soil body, the manufacturing time is short, the foundation slab cushion layer and the waterproof structure are rapidly constructed, and the construction efficiency is improved. And the space-time effect of foundation pit excavation is controlled, and the deformation influence of foundation pit excavation on the underlying subway tunnel is reduced.
本发明公开了一种基础底板垫层及防水的制作方法，包括以下步骤：S1、对从地面开始至距地铁隧道顶面预设距离处之间的土体进行加固；S2、对加固后的土体开挖基坑至设计深度，基坑底面下方剩余的加固土体为水泥加固土体，作为基础底板垫层；S3、在水泥加固土体顶面撒水泥粉，作为基面；S4、在水泥粉上撒水泥基渗透结晶型防水剂，作为防水层。本发明采用基坑底面以下水泥加固土体代替素混凝土作为基础底板垫层，缩短基础底板垫层的制作时间，在经整平后的水泥加固土体顶面直接依次撒水泥粉、水泥基渗透结晶型防水剂，制作时间少，实现快速施工基础底板垫层及防水结构，控制基坑开挖的“时空效应”，减少基坑开挖对下卧地铁隧道的变形影响。
Road tunnel construction structure above existing subway tunnel, foundation slab cushion layer and waterproof manufacturing method
The invention discloses a foundation slab cushion layer and waterproof manufacturing method. The foundation slab cushion layer and waterproof manufacturing method comprises the following steps that S1, a soil body from the ground to the position away from the top face of a subway tunnel by a preset distance is reinforced; s2, a foundation pit is excavated in the reinforced soil body to the designed depth, and the remaining reinforced soil body below the bottom face of the foundation pit is a cement reinforced soil body and serves as a foundation bottom plate cushion layer; s3, cement powder is scattered on the top face of the cement reinforced soil body to serve as a base face; and S4, a cement-based capillary crystalline waterproof agent is scattered on the cement powder to serve as a waterproof layer. The cement-reinforced soil body below the bottom surface of the foundation pit is adopted to replace plain concrete to serve as the foundation slab cushion layer, the manufacturing time of the foundation slab cushion layer is shortened, the cement powder and the cement-based capillary crystalline waterproof agent are directly and sequentially scattered on the top surface of the leveled cement-reinforced soil body, the manufacturing time is short, the foundation slab cushion layer and the waterproof structure are rapidly constructed, and the construction efficiency is improved. And the space-time effect of foundation pit excavation is controlled, and the deformation influence of foundation pit excavation on the underlying subway tunnel is reduced.
本发明公开了一种基础底板垫层及防水的制作方法，包括以下步骤：S1、对从地面开始至距地铁隧道顶面预设距离处之间的土体进行加固；S2、对加固后的土体开挖基坑至设计深度，基坑底面下方剩余的加固土体为水泥加固土体，作为基础底板垫层；S3、在水泥加固土体顶面撒水泥粉，作为基面；S4、在水泥粉上撒水泥基渗透结晶型防水剂，作为防水层。本发明采用基坑底面以下水泥加固土体代替素混凝土作为基础底板垫层，缩短基础底板垫层的制作时间，在经整平后的水泥加固土体顶面直接依次撒水泥粉、水泥基渗透结晶型防水剂，制作时间少，实现快速施工基础底板垫层及防水结构，控制基坑开挖的“时空效应”，减少基坑开挖对下卧地铁隧道的变形影响。
Road tunnel construction structure above existing subway tunnel, foundation slab cushion layer and waterproof manufacturing method
既有地铁隧道上方的道路隧道施工结构以及基础底板垫层及防水的制作方法
LI GANYAN (author) / CHEN CHAOYANG (author) / XU ZE (author) / CHEN SU (author) / LU HAO (author) / MENG XIAOLONG (author) / HAN XU (author) / ZHAO KAI (author) / PENG BO (author) / DI PENG (author)
2022-12-09
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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