Supporting construction technology for deep foundation pit nearby road on complicated geological conditions
A technology of complex geological conditions and deep foundation pit support, applied in infrastructure engineering, sheet pile walls, excavation, etc., can solve problems such as difficult support for deep foundation pits, high construction costs, and potential safety hazards, and eliminates the need for Potential safety hazards, reduced construction costs, and the effect of reducing the amount of backfill
Pending Publication Date: 2020-01-14
中铁八局集团第四工程有限公司 +1
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[0004] The purpose of the present invention is to: aim at the above existing problems, to provide a deep foundation pit support construction technology adjacent to the road under complex geological conditions, the present invention adopts the method of inclined col
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[0020] Example
[0021] Take the CLZF-2 standard project of Chengdu to Chuanzhusi section of Chenglan Railway undertaken by the applicant as an example. The project includes 5 station buildings including Maoxian Station, Zhenjiangguan Station, Songpan Station, Chuanzhusi Station, and Huangshengguan Station. Among them, during the construction of the Huangshengguan and Chuanzhusi station buildings, the temporary site was relatively narrow, the excavation line of the foundation pit was about 50cm away from the temporary road on the site, the depth of the foundation pit was more than 5m, the geological conditions were complicated, and the upper part of the ground was loose and humid. The lower part is a very high soil layer, and the lower part is a hard and compact rock layer. The traditional supporting structure cannot be applied. In order to solve this problem, the present invention figure 1 As shown, the deep foundation pit support construction technology adopted by the present i...
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The invention discloses a supporting construction technology for a deep foundation pit nearby a road on the complicated geological conditions. The technology comprises the following steps of first, carrying out foundation pit excavation to the lithosphere, and carrying out slope setting construction to form a first foundation pit; second, driving first column piles on the edge of the pit bottom ofthe first foundation pit to form first batter post supporting; third, carrying out lithosphere excavation at the pit bottom of the first foundation pit to form a second foundation pit, carrying out slope setting construction, and then carrying out anchor rod supporting; and fourth, driving second column piles on the edge of the pit bottom of the second foundation pit to form second batter post supporting. According to the supporting construction technology for the deep foundation pit nearby the road on the complicated geological conditions, supporting on the deep foundation pit is implementedin the manner of arranging anchor rod supporting between batter post supporting, the problems that supporting for a deep foundation pit nearby the road on complicated geological conditions is difficult to carry out, high in construction cost, prone to having potential safety hazard, and the like are solved, supporting construction of the deep foundation pit nearby the road on the complicated geological conditions can be implemented, and the successful practice experience is provided for the field of supporting construction.
Description
technical field [0001] The invention relates to the technical field of foundation pit support construction, in particular to a deep foundation pit support construction technology near roads under complex geological conditions. Background technique [0002] Foundation pit support is to ensure the safety of the underground structure construction and the surrounding environment of the foundation pit. It is a temporary measure for the support, reinforcement and protection of the side wall of the foundation pit and the surrounding environment, as well as groundwater control. The foundation pit support project is a temporary project. The safety reserve of the design is relatively small, but its cost is high, the number of construction works is large, and the technology is complicated. It is the most challenging technical difficulty in construction engineering, and it is also the focus of reducing project cost and ensuring project quality. [0003] The forms of foundation pit suppo...
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Login to view more IPC IPC(8): E02D17/04E02D19/06E02D19/08E02D5/76
CPCE02D5/76E02D17/04E02D19/06E02D19/08
Inventor 邓利平冉华廖荣胡宗峰万轶万昭李伟张骏程李宇康旆王贝廖勇吴加洋郭啸天
Owner 中铁八局集团第四工程有限公司
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