A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Soft soil area deep foundation pit support changing construction method
The invention provides a soft soil area deep foundation pit support changing construction method which comprises the steps that relevant parameters of an enclosure structure, a waterproof curtain and a supporting system are calculated and confirmed, the stress of blade wall support changing is calculated according to the support disassembling working condition, and the section and reinforcing bars of a blade wall used for support changing are calculated and confirmed; excavating a first layer of earthwork, and constructing a first enclosing purlin and a first support; after the first enclosing purlin and the first support reach the strength required by design, second earthwork is excavated, and a second enclosing purlin and a second support are constructed; after the second enclosing purlin and the second support reach the strength required by design, earthwork is excavated to the bottom of the foundation pit, and a basement bottom plate is constructed; after the basement bottom plate reaches the strength required by design, a plurality of blade walls are constructed for support replacement; after the blade wall reaches the strength required by the design, the second support, the first enclosing purlin and the first support are dismantled, and the basement structure is constructed to positive and negative zero; and after the fertilizer groove is backfilled, the blade wall located in the basement is removed.
本发明提供了一种软土地区深基坑换撑施工方法，所述施工方法包括：计算确认围护结构、止水帷幕以及支撑体系的相关参数，并根据拆撑工况计算刀片墙换撑的受力，计算确认用于换撑的刀片墙的截面和配筋；开挖第一皮土方，施工第一道围檩和第一道支撑；待第一道围檩和第一道支撑达到设计要求强度后，开挖第二皮土方，施工第二道围檩和第二道支撑；待第二道围檩和第二道支撑达到设计要求强度后，开挖土方至基坑底，施工地下室底板；待地下室底板达到设计要求强度后，施工多个刀片墙以进行换撑；待刀片墙达到设计要求强度后，拆除第二道支撑、第一道围檩、第一道支撑，施工地下室结构至正负零；待肥槽回填后，拆除位于地下室内部的刀片墙。
Soft soil area deep foundation pit support changing construction method
The invention provides a soft soil area deep foundation pit support changing construction method which comprises the steps that relevant parameters of an enclosure structure, a waterproof curtain and a supporting system are calculated and confirmed, the stress of blade wall support changing is calculated according to the support disassembling working condition, and the section and reinforcing bars of a blade wall used for support changing are calculated and confirmed; excavating a first layer of earthwork, and constructing a first enclosing purlin and a first support; after the first enclosing purlin and the first support reach the strength required by design, second earthwork is excavated, and a second enclosing purlin and a second support are constructed; after the second enclosing purlin and the second support reach the strength required by design, earthwork is excavated to the bottom of the foundation pit, and a basement bottom plate is constructed; after the basement bottom plate reaches the strength required by design, a plurality of blade walls are constructed for support replacement; after the blade wall reaches the strength required by the design, the second support, the first enclosing purlin and the first support are dismantled, and the basement structure is constructed to positive and negative zero; and after the fertilizer groove is backfilled, the blade wall located in the basement is removed.
本发明提供了一种软土地区深基坑换撑施工方法，所述施工方法包括：计算确认围护结构、止水帷幕以及支撑体系的相关参数，并根据拆撑工况计算刀片墙换撑的受力，计算确认用于换撑的刀片墙的截面和配筋；开挖第一皮土方，施工第一道围檩和第一道支撑；待第一道围檩和第一道支撑达到设计要求强度后，开挖第二皮土方，施工第二道围檩和第二道支撑；待第二道围檩和第二道支撑达到设计要求强度后，开挖土方至基坑底，施工地下室底板；待地下室底板达到设计要求强度后，施工多个刀片墙以进行换撑；待刀片墙达到设计要求强度后，拆除第二道支撑、第一道围檩、第一道支撑，施工地下室结构至正负零；待肥槽回填后，拆除位于地下室内部的刀片墙。
Soft soil area deep foundation pit support changing construction method
软土地区深基坑换撑施工方法
ZHANG MENGMENG (author)
2024-01-30
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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