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A platform for research: civil engineering, architecture and urbanism
Supporting structure for preventing large-area continuous collapse of foundation pit support and construction method
The invention discloses a supporting structure for preventing large-area continuous collapse of a foundation pit support, which comprises a plurality of groups of vertical row piles, and each group of vertical row piles comprises a plurality of vertical piles arranged in sequence; the head side and the tail side of each set of vertical row piles are each provided with a set of splayed piles, and each set of splayed piles is formed by combining an inner inclined pile with the pile top inclining towards the interior of the foundation pit and an outer inclined pile with the pile top inclining towards the exterior of the foundation pit. The pile tops of the inner inclined piles and the outer inclined piles are in butt joint, and the center line of an included angle formed by butt joint is parallel to the vertical piles; the pile tops of the vertical row piles and the splayed piles are connected with top beams. The invention further discloses a construction method of the supporting structure for preventing the large-area continuous collapse of the foundation pit support. Local rigidity of a supporting structure can be remarkably improved, transmission of possible pile body continuous damage can be interrupted, and overturning damage of the foundation pit can be avoided, so that damage to underground structures such as underground pipelines and subway tunnels outside the surrounding foundation pit is avoided, supporting toughness can be improved, and the service life of foundation pit engineering is prolonged.
本发明公开了一种防止基坑围护大面积连续垮塌的支护结构，包括：多组竖直排桩，每组竖直排桩包括多个依次排列的竖直桩；每组竖直排桩的首尾两侧各设有一组八字形桩，每组八字形桩由一个桩顶向基坑内倾斜的内倾斜桩和一个桩顶向基坑外倾斜的外倾斜桩组合而成的；内倾斜桩和外倾斜桩的桩顶对接，对接形成的夹角中心线与竖直桩平行；竖直排桩和八字形桩的桩顶连接有冠梁。本发明还公开了上述防止基坑围护大面积连续垮塌的支护结构的施工方法。本发明可显著增加支护结构局部刚性，将可能发生的桩体连续破坏的传递中断，可避免基坑倾覆破坏，从而避免对周边基坑外地下管线、地铁隧道等地下结构的破坏，可提高支护韧性，提高基坑工程寿命。
Supporting structure for preventing large-area continuous collapse of foundation pit support and construction method
The invention discloses a supporting structure for preventing large-area continuous collapse of a foundation pit support, which comprises a plurality of groups of vertical row piles, and each group of vertical row piles comprises a plurality of vertical piles arranged in sequence; the head side and the tail side of each set of vertical row piles are each provided with a set of splayed piles, and each set of splayed piles is formed by combining an inner inclined pile with the pile top inclining towards the interior of the foundation pit and an outer inclined pile with the pile top inclining towards the exterior of the foundation pit. The pile tops of the inner inclined piles and the outer inclined piles are in butt joint, and the center line of an included angle formed by butt joint is parallel to the vertical piles; the pile tops of the vertical row piles and the splayed piles are connected with top beams. The invention further discloses a construction method of the supporting structure for preventing the large-area continuous collapse of the foundation pit support. Local rigidity of a supporting structure can be remarkably improved, transmission of possible pile body continuous damage can be interrupted, and overturning damage of the foundation pit can be avoided, so that damage to underground structures such as underground pipelines and subway tunnels outside the surrounding foundation pit is avoided, supporting toughness can be improved, and the service life of foundation pit engineering is prolonged.
本发明公开了一种防止基坑围护大面积连续垮塌的支护结构，包括：多组竖直排桩，每组竖直排桩包括多个依次排列的竖直桩；每组竖直排桩的首尾两侧各设有一组八字形桩，每组八字形桩由一个桩顶向基坑内倾斜的内倾斜桩和一个桩顶向基坑外倾斜的外倾斜桩组合而成的；内倾斜桩和外倾斜桩的桩顶对接，对接形成的夹角中心线与竖直桩平行；竖直排桩和八字形桩的桩顶连接有冠梁。本发明还公开了上述防止基坑围护大面积连续垮塌的支护结构的施工方法。本发明可显著增加支护结构局部刚性，将可能发生的桩体连续破坏的传递中断，可避免基坑倾覆破坏，从而避免对周边基坑外地下管线、地铁隧道等地下结构的破坏，可提高支护韧性，提高基坑工程寿命。
Supporting structure for preventing large-area continuous collapse of foundation pit support and construction method
一种防止基坑围护大面积连续垮塌的支护结构及施工方法
LEE JONG-SOON (author) / YAO TAO (author) / GUO ZHIYI (author) / ZHOU HAIZUO (author) / ZHENG GANG (author) / MA QINGWEI (author) / ZHOU QIANG (author) / GUO JINGZHUO (author)
2022-03-01
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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