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Deep foundation pit support system and construction method thereof
The invention discloses a deep foundation pit support system and a construction method thereof. The support system comprises at least two circles of support structures arranged along the side wall ofa foundation pit and an in-pit reinforcement structure arranged along the support structure of the innermost circle. Each support structure comprises a plurality of cast-in-place piles. The cast-in-place piles in the support structures are arranged along the side wall of the foundation pit. The in-pit reinforcement structure comprises a plurality of counter-pressure soil separating piers and/or in-pit counter-pressure soil. The support structures arranged in the support system play roles in retaining and ensuring the stability of the foundation pit. The counter-pressure soil separating piers play a role in shortening extension sections of the support structures and improve the rigidity of a crown beam, and the in-pit counter-pressure soil is used for enhancing or replacing a pit-bottom supporting system, thereby achieving the purposes of controlling or reducing the displacement of the support structures, reducing the embedding depth of the support structures and saving the project cost. The invention can be widely applied to the technical field of deep foundation pit construction.
本发明公开了一种深基坑的支护体系及其施工方法，支护体系包括沿基坑侧壁布置的至少两圈支护结构和沿最内圈的支护结构设置的坑内加固结构，支护结构包括若干个灌注桩，支护结构中各灌注桩沿基坑侧壁设置；坑内加固结构包括若干个反压土隔墩和/或坑内反压土。支护体系中设置的支护结构起支挡作用和保证基坑稳定的作用，反压土隔墩起缩短支护结构延长段长度的作用，提高冠梁刚度，坑底反压土用于增强或替代坑底支撑体系，进而达到控制或减小支护结构位移，减小支护结构嵌固深度、节省工程造价等目的。本发明可广泛应用于深基坑施工技术领域。
Deep foundation pit support system and construction method thereof
The invention discloses a deep foundation pit support system and a construction method thereof. The support system comprises at least two circles of support structures arranged along the side wall ofa foundation pit and an in-pit reinforcement structure arranged along the support structure of the innermost circle. Each support structure comprises a plurality of cast-in-place piles. The cast-in-place piles in the support structures are arranged along the side wall of the foundation pit. The in-pit reinforcement structure comprises a plurality of counter-pressure soil separating piers and/or in-pit counter-pressure soil. The support structures arranged in the support system play roles in retaining and ensuring the stability of the foundation pit. The counter-pressure soil separating piers play a role in shortening extension sections of the support structures and improve the rigidity of a crown beam, and the in-pit counter-pressure soil is used for enhancing or replacing a pit-bottom supporting system, thereby achieving the purposes of controlling or reducing the displacement of the support structures, reducing the embedding depth of the support structures and saving the project cost. The invention can be widely applied to the technical field of deep foundation pit construction.
本发明公开了一种深基坑的支护体系及其施工方法，支护体系包括沿基坑侧壁布置的至少两圈支护结构和沿最内圈的支护结构设置的坑内加固结构，支护结构包括若干个灌注桩，支护结构中各灌注桩沿基坑侧壁设置；坑内加固结构包括若干个反压土隔墩和/或坑内反压土。支护体系中设置的支护结构起支挡作用和保证基坑稳定的作用，反压土隔墩起缩短支护结构延长段长度的作用，提高冠梁刚度，坑底反压土用于增强或替代坑底支撑体系，进而达到控制或减小支护结构位移，减小支护结构嵌固深度、节省工程造价等目的。本发明可广泛应用于深基坑施工技术领域。
Deep foundation pit support system and construction method thereof
一种深基坑的支护体系及其施工方法
YANG GUANGHUA (author) / CHEN FUQIANG (author) / DU XIUZHONG (author) / QIAO YOULIANG (author) / LI CHANGJIANG (author)
2020-08-25
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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