A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
High-low pit excavation method in large-area deep foundation pit
The invention provides a high-low pit excavation method in a large-area deep foundation pit, which comprises a shallow foundation pit A, a deep foundation pit B and underground diaphragm walls, a group of underground diaphragm walls are oppositely arranged, and the shallow foundation pit A and the deep foundation pit B are both located between the group of underground diaphragm walls. A fifth steel support, a fourth steel support, a third steel support and a second steel support are sequentially arranged above the shallow foundation pit A. A first concrete support is connected between the tops of the underground diaphragm walls through micro-expansion concrete, and an intercepting ditch is formed in one side of each underground diaphragm wall. A plain concrete wall is arranged on one side of the underground diaphragm wall. The method solves the additional problem when conventional high-low pit excavation is carried out on one side of the existing structure, the problem that quantitative control cannot be carried out on the lateral deformation problem of the existing structure due to the large construction period span is solved, secondary deformation of a shallow foundation pit structure which is manufactured firstly is avoided, construction joints are reduced, and the construction working efficiency is improved.
本发明提供了一种大面积深基坑中的高低坑开挖工法，包括浅基坑A、深基坑B和地下连续墙，所述地下连续墙对置设置有一组，所述浅基坑A和深基坑B均位于一组地下连续墙之间，所述浅基坑A的上方依次设置有第五道钢支撑、第四道钢支撑、第三道钢支撑和第二道钢支撑，一组所述地下连续墙的顶部之间通过微膨胀混凝土衔接有第一道混凝土支撑，所述地下连续墙的一侧设置有截水沟，所述地下连续墙的一侧设置有素混凝土墙。本发明解决了在即有结构一侧进行常规高低坑开挖时的附加问题，以及工期跨度大、既有结构的侧向变形问题无法进行量化控制，避免先做浅基坑结构发生二次变形，减少施工缝，提升施工的工作效率。
High-low pit excavation method in large-area deep foundation pit
The invention provides a high-low pit excavation method in a large-area deep foundation pit, which comprises a shallow foundation pit A, a deep foundation pit B and underground diaphragm walls, a group of underground diaphragm walls are oppositely arranged, and the shallow foundation pit A and the deep foundation pit B are both located between the group of underground diaphragm walls. A fifth steel support, a fourth steel support, a third steel support and a second steel support are sequentially arranged above the shallow foundation pit A. A first concrete support is connected between the tops of the underground diaphragm walls through micro-expansion concrete, and an intercepting ditch is formed in one side of each underground diaphragm wall. A plain concrete wall is arranged on one side of the underground diaphragm wall. The method solves the additional problem when conventional high-low pit excavation is carried out on one side of the existing structure, the problem that quantitative control cannot be carried out on the lateral deformation problem of the existing structure due to the large construction period span is solved, secondary deformation of a shallow foundation pit structure which is manufactured firstly is avoided, construction joints are reduced, and the construction working efficiency is improved.
本发明提供了一种大面积深基坑中的高低坑开挖工法，包括浅基坑A、深基坑B和地下连续墙，所述地下连续墙对置设置有一组，所述浅基坑A和深基坑B均位于一组地下连续墙之间，所述浅基坑A的上方依次设置有第五道钢支撑、第四道钢支撑、第三道钢支撑和第二道钢支撑，一组所述地下连续墙的顶部之间通过微膨胀混凝土衔接有第一道混凝土支撑，所述地下连续墙的一侧设置有截水沟，所述地下连续墙的一侧设置有素混凝土墙。本发明解决了在即有结构一侧进行常规高低坑开挖时的附加问题，以及工期跨度大、既有结构的侧向变形问题无法进行量化控制，避免先做浅基坑结构发生二次变形，减少施工缝，提升施工的工作效率。
High-low pit excavation method in large-area deep foundation pit
一种大面积深基坑中的高低坑开挖工法
WANG WENJUN (author) / ZHANG MEIQIN (author) / NI JIDONG (author) / YANG XIAOMENG (author) / ZHANG GUOLIANG (author) / YU JIAYUN (author) / ZHAO GUOZHI (author) / ZHOU ZHEYU (author) / SUN HAO (author) / WANG WENBO (author)
2023-10-20
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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