A ramp and construction method for deep foundation pit excavation in complex surrounding environment
A technology of surrounding environment and construction method, applied in the direction of basic structure engineering, filling, excavation, etc., can solve the problems of lack of economic benefits, prolonging the construction period, and increasing construction costs, so as to improve the excavation efficiency, facilitate construction, and shorten the construction period Effect
Active Publication Date: 2022-06-28
POWERCHINA HUADONG ENG COPORATION LTD
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Problems solved by technology
However, when the foundation pit area is small and the excavation depth is deep, the traditional excavation method (trestle bridge or grading) cannot be implemented smoothly due to the tight site, and it faces constraints such as long earthwork construction period and high construction cost; At the same time, the vertical transportation efficiency of long-arm excavators and other facilities will decrease with the increase of foundation pit depth, which will increase the construction cost and prolong the construction period, which does not have good economic benefits
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[0053] In order to make the technical means, innovative features, achieved goals and effects of the present invention easy to understand and understand, the present invention is further described below.
[0054] The embodiments described herein are specific embodiments of the present invention, are used to illustrate the concept of the present invention, are illustrative and exemplary, and should not be construed as limiting the embodiments of the present invention and the scope of the present invention. In addition to the embodiments described herein, those skilled in the art can also adopt other obvious technical solutions based on the contents disclosed in the claims and the description of the present application, and these technical solutions include any obvious technical solutions to the embodiments described herein. Alternative and modified technical solutions.
[0055] In the description of the present invention, it should be noted that the terms "upper", "lower", "inne...
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The invention provides a deep foundation pit excavation ramp in a complex surrounding environment and a construction method. The deep foundation pit excavation ramp in a complex surrounding environment includes the foundation pit, and the external ramp of the foundation pit connected in sequence, and the first excavation ramp in the foundation pit. The ramp, the second ramp in the foundation pit and the third ramp in the foundation pit, the first enclosure structure is arranged around the foundation pit, and the first support, the second support and the third support are arranged vertically inside the foundation pit. support, a ramp door opening is opened between the first support and the second support of the corner side wall of the foundation pit, and the outer ramp of the foundation pit is an excavation ramp with a side slope connected to the bottom of the ramp door opening. The first ramp in the foundation pit is a horizontal ramp without a side slope that is flush with the second support, and the second ramp in the foundation pit is an excavation ramp with a side slope connected between the second support and the third support. The third ramp in the foundation pit is an excavation ramp with a side slope connected between the third support and the bottom of the foundation pit. The invention can greatly shorten the construction period and reduce the cost.
Description
technical field [0001] The invention belongs to the technical field of foundation pit construction, in particular to a deep foundation pit excavation ramp and a construction method in a complex surrounding environment. Background technique [0002] In recent years, my country's urban construction has developed rapidly. In order to meet the needs of urban reconstruction and development, urban rail transit and high-rise building construction, the foundation pit project gradually presents the characteristics of "deep, large, close and tight", that is, the excavation depth is deep , large scale, close to important buildings (structures) and pipelines, and compact site. Due to the complex surrounding environment, the deformation control requirements of the foundation pit during the construction process are extremely strict. [0003] For deep foundation pits with complex surrounding environments (such as near the subway), the support form of sub-pit excavation and combination of en...
Claims
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IPC IPC(8): E02D17/02E02D17/04E02D17/00E02D17/18E04G27/00
CPCE02D17/02E02D17/04E02D17/00E02D17/18E04G27/00
Inventor 王宽君马丽丽甘鹏路夏霄
Owner POWERCHINA HUADONG ENG COPORATION LTD