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A platform for research: civil engineering, architecture and urbanism
Interventional type secondary support changing method for inclined throwing support supporting system of deep foundation pit
The invention provides an intrusive type secondary support changing method of a deep foundation pit inclined throwing support system, which comprises the following steps of: after a second foundation bottom plate in a basin edge area is finished, adding a concrete enclosing purlin, a support changing plate and a height-reduced section steel short throwing support on a section of underground two-layer outer wall which is constructed in advance, so as to form intrusive type secondary support changing; the problems that an inclined throwing support penetrates through a basement structure and supporting of a formwork of the basement structure is affected are solved. Meanwhile, through the method that the foundation bottom plate in the middle of the foundation pit is constructed in a partitioned mode, and an excavator station for pot-side earth cutting and an earthwork vehicle transportation channel are formed on the surface of the foundation bottom plate, the problem that earthwork is difficult to excavate and transport under pot-side inclined throwing supporting under the foundation pit supporting condition is solved.
本发明提供了一种深基坑斜抛撑支护体系的介入式二次换撑方法，通过在盆边区域第二基础底板完成后先行施工的一段地下二层外墙、附加砼围檩、换撑板和降低高度的型钢短抛撑，形成介入式二次换撑，通过永久结构的传力，解决斜抛撑穿越地下室结构，以及影响地下室结构模架支设的问题。同时，通过分区施工基坑中部的基础底板，并在基础底板表面形成盆边挖土的挖机站位和土方车运输通道的方法，解决此种基坑支护条件下盆边斜抛撑下土方挖运困难的问题。
Interventional type secondary support changing method for inclined throwing support supporting system of deep foundation pit
The invention provides an intrusive type secondary support changing method of a deep foundation pit inclined throwing support system, which comprises the following steps of: after a second foundation bottom plate in a basin edge area is finished, adding a concrete enclosing purlin, a support changing plate and a height-reduced section steel short throwing support on a section of underground two-layer outer wall which is constructed in advance, so as to form intrusive type secondary support changing; the problems that an inclined throwing support penetrates through a basement structure and supporting of a formwork of the basement structure is affected are solved. Meanwhile, through the method that the foundation bottom plate in the middle of the foundation pit is constructed in a partitioned mode, and an excavator station for pot-side earth cutting and an earthwork vehicle transportation channel are formed on the surface of the foundation bottom plate, the problem that earthwork is difficult to excavate and transport under pot-side inclined throwing supporting under the foundation pit supporting condition is solved.
本发明提供了一种深基坑斜抛撑支护体系的介入式二次换撑方法，通过在盆边区域第二基础底板完成后先行施工的一段地下二层外墙、附加砼围檩、换撑板和降低高度的型钢短抛撑，形成介入式二次换撑，通过永久结构的传力，解决斜抛撑穿越地下室结构，以及影响地下室结构模架支设的问题。同时，通过分区施工基坑中部的基础底板，并在基础底板表面形成盆边挖土的挖机站位和土方车运输通道的方法，解决此种基坑支护条件下盆边斜抛撑下土方挖运困难的问题。
Interventional type secondary support changing method for inclined throwing support supporting system of deep foundation pit
深基坑斜抛撑支护体系的介入式二次换撑方法
TAO YUNHAI (author) / SHI YANG (author) / CAO XUEFENG (author) / XIA XIN (author) / LIU WEI (author) / FANG XING (author) / JIANG ZHIXIONG (author) / WANG JIAQING (author) / LI WEI (author) / WANG JIE (author)
2024-09-27
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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