Construction method of foundation pit group and foundation pile group
A construction method and technology of foundation piles, which are applied in foundation structure engineering, excavation, construction, etc., can solve problems such as inability to adapt to the construction of complex deep foundation pit groups and foundation pile groups, and achieve the benefits of finished product protection, clear construction process, and accelerated construction. effect of progress
Active Publication Date: 2018-12-11
北京市机械施工集团有限公司 +1
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Problems solved by technology
The current conventional foundation pit and foundation pile construction methods can no longer adapt to the construction of such a large-scale complex deep foundation pit group and foundation pile group
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[0029] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments and accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.
[0030] Beijing New Airport Terminal Construction Corridor Project, the project is located between Yufa Town, Lixian Town, Daxing District, Beijing and Guangyang District, Langfang City, Hebei Province. Composition of corridors and rail transit. Among them, three rail transit tunnels pass through the underground of the largest middle-south corridor, forming complex deep foundation pit groups and foundation pile groups. The foundation pit area reaches 62,000 m2, which is rare for a project of this scale and complexity. The ...
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The invention discloses a construction method of a foundation pit group and a foundation pile group. The foundation pit group comprises three or more parallel deep and narrow staggered foundation pitswith the height difference exceeding 13 m; and the foundation pile group is distributed in the deep and narrow foundation pits of the foundation pit group, and performs crossed operation with the deep and narrow foundation pits of the foundation pit group. The construction method includes the following steps that a BIM structure model of the foundation pit group and the foundation pile group is built; according to the BIM model, colliding detection is performed; the foundation pit group is divided into a narrow area and a deep area, and then the narrow area is divided into an influence area and a non-influence area; earthwork excavation is performed to an operation face; supporting pile construction of the deep area is performed; foundation pile construction of the influence area of the narrow area is performed; foundation pile construction of the deep area is performed; earthwork excavation and anchor rope construction of the deep area are performed, and foundation pile constructionof the non-influence area of the narrow area is performed at the same time; and local deep pit micro pile, micro pile anchor rope and micro pile top crown beam construction of the deep area is performed. The construction method is a fast, efficient, economical and reasonable continuous multi-segment large-height-difference long and narrow deep foundation pit group and foundation pile group construction method.
Description
technical field [0001] The invention relates to the field of building engineering construction. More specifically, it relates to a construction method for foundation pit groups and foundation pile groups. Background technique [0002] The foundation pit is an earth pit excavated at the foundation design position according to the base level and foundation plane size. Conventional foundation pit projects are mostly single foundation pits. Conventional foundation pits and foundation pile projects are relatively independent, with less intersections and overall construction steps are relatively simple. Generally, a certain thickness of soil layer is reserved above the bottom of the foundation pit, and then the foundation is excavated. For pile construction, foundation pile construction is also carried out on the ground in Tianjin and southern soft soil areas in my country, but the foundation piles are generally not related or less related to the supporting structure. [0003] Wi...
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IPC IPC(8): E02D17/04
CPCE02D17/04
Inventor 邵九婷胡鸿志张治华刘兴旺王佳乐肖恩旺王洋付小敏常乃麟邹建磊孙浩天邓轶昕王幸男李雪齐裴海峰周森森
Owner 北京市机械施工集团有限公司
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