Excavation construction method for high-water-level deep foundation pit
A construction method and technology for deep foundation pits, which are applied in excavation, infrastructure engineering, construction, etc., can solve the problems of high input of turnover materials, high cost, and insufficient support of foundation pits, so as to reduce the exposure time of foundation pits and save money. The effect of construction period and reducing the safety risk of foundation pit
Inactive Publication Date: 2020-02-04
CHINA CONSTR FOURTH ENG DIV +1
View PDF6 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] During the excavation of the traditional high-water level deep foundation pit, the support for the foundation pit is not strong enough, and there are certain safety risks. At the same time, the investment of turnover materials such as formwork and steel pipes is relatively high, and the cost is high
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreExamples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0013] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0014] Embodiment of the present invention: In this embodiment, the excavation depth of the foundation pit is 9-15 meters, the circumference of the foundation pit is about 650m, irregular shape, the north side is close to the municipal road, the distance is 1-4m, and the support form of single row piles and anchor cables is adopted. , except for the old residential buildings with 1-8 floors at 1-2.5 meters in the north foundation pit, the foundation is a strip-shaped shallow foundation with doub...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a excavation construction method for a high-water-level deep foundation pit. The method comprises the following steps that firstly, foundation pit supporting construction is carried out, and then earthwork in the foundation pit is subjected to layered excavation; when the earthwork is excavated to 5 meters above a foundation pit bottom, engineering pile construction is carried out, and the 5-meter earthwork above the foundation pit bottom is reserved; and after the engineering pile construction is completed, the earthwork in the foundation pit is subjected to secondaryexcavation until the earthwork is excavated to the foundation pit bottom, and then a bottom plate cushion layer is immediately poured and main mechanism construction is carried out. According to the method, a construction mode that engineering is inserted when the earthwork is excavated to 5 meters above the foundation pit bottom, the construction period can be effectively saved, and meanwhile, foundation pit feet are restricted by the 5-meter earthwork, and foundation pit deformation is controllable; and meanwhile, due to the fact that engineering piles are close to supporting piles, the foundation pit bottom is reinforced for foundation pit supporting by inserting the engineering pile construction in advance, the safety of the foundation pit and the surrounding environment is ensured, the construction cost is saved, and the construction period is shortened.
Description
technical field [0001] The invention relates to a high-water-level deep foundation pit excavation construction method, which belongs to the technical field of foundation pit construction. Background technique [0002] Foundation pit support technology and top excavation technology are key technologies commonly used in construction engineering. With the increase of large-scale high-rise buildings, more and more super-large and super-deep foundation pits appear, and the maximum depth can reach about 60 meters. The level of foundation pit support requires professional and scientific foundation pit support technology. After the foundation pit support reaches the standard, the excavation of the foundation pit will be carried out, and the earthwork excavation technology will be applied to it. [0003] Before the construction of the foundation pit, it is necessary to fully analyze the conditions of the construction site and design countermeasures for various influencing factors to ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/00E02D17/02
CPCE02D17/00E02D17/02
Inventor 罗天洪冯学瑞晏克珍谢明康
Owner CHINA CONSTR FOURTH ENG DIV