Foundation pit enclosing structure adopting fill reinforced concrete steel pipes
A technology of reinforced concrete and foundation pit enclosure, which is applied in the direction of foundation structure engineering, excavation, construction, etc., and can solve the problems that the steel strength of open steel pipe piles is difficult to be fully utilized, and the construction quality of pile rows is difficult to control, etc.
Pending Publication Date: 2020-05-15
EAST CHINA ARCHITECTURAL DESIGN & RES INST
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Problems solved by technology
[0004] The invention provides a foundation pit enclosure structure using inner-filled reinforced concrete steel pipes, which solves the problem that the steel strength of open steel pipe piles is difficult to fully exert and can avoid the problem that the construction quality of conventional bored piles is difficult to control
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[0013] The specific implementation manners of the present invention will be described in further detail below in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention, not to limit the present invention.
[0014] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying Describes, but does not indicate or imply that the components referred to must have a particular orientation, be constructed in a particular orientation, and operate in a particular orientation, and thus should not be construed as limiting the invention.
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The invention provides a foundation pit enclosing structure adopting fill reinforced concrete steel pipes, and belongs to the field of building foundation pit enclosing. According to the technical scheme, the multiple fill reinforced concrete steel pipes are connected into a row through lock catches, in the fill reinforced concrete steel pipes, reinforcement cages are inserted into the steel pipes, and the spaces between the reinforcement cages and the inner walls of the steel pipes are filled with non-contract concrete. The reinforcement cages and the steel pipes have the same circle centers.The heights of the lock catches are equal to the pipe lengths of the fill reinforced concrete steel pipes, each lock catch is composed of two portions with the cross section shapes mutually lapped and buckled left and right and front and back, and the two portions are welded to the outer walls of the adjacent fill reinforced concrete steel pipes correspondingly. By means of the foundation pit enclosing structure, the problem that the steel strength of open steel pipe piles is hardly exerted fully is solved, and the problem that the construction quality of conventional bored row piles is hardly controlled can be avoided.
Description
technical field [0001] The invention belongs to the field of building foundation pit support, and in particular relates to a foundation pit enclosure structure form. Background technique [0002] Drilled and cast-in-place piles are a main form of enclosure for foundation pit engineering in soft soil areas. In the foundation pit engineering, the row of piles used as the enclosure structure mainly bears the bending moment, and the bending resistance of the reinforced concrete structure is relatively weak. Therefore, when the foundation pit is deep, row piles with larger diameters need to be used as Envelope structure, not only wastes materials, but also the construction quality of conventional bored pile construction technology is difficult to control when constructing large-diameter piles; in addition, three-axis cement-soil mixing piles and other forms of water-proof curtains should be installed outside the piles To isolate the water, the construction is more complicated. ...
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IPC IPC(8): E02D17/04
CPCE02D17/04
Inventor 徐中华王卫东翁其平陈永才
Owner EAST CHINA ARCHITECTURAL DESIGN & RES INST