Dismantling technology of deep foundation pit concrete support
A technology for concrete and deep foundation pits, applied in infrastructure engineering, building maintenance, excavation, etc., can solve problems such as undiscovered technical means, increase construction cost, and extend construction period, so as to achieve simple construction technology, reduce construction cost, and shorten construction period Effect
Inactive Publication Date: 2019-05-21
CHINA TIESIJU CIVIL ENG GROUP +1
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Problems solved by technology
[0003] Because the lower bracket of the support beam is a strip structure, its stability is relatively poor; moreover, the erection of the bracket not only prolongs the construction period but also increases the construction cost
[0004] After searching, no effective technical means to solve the above technical problems were found
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[0053] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. However, the present invention should be understood as not limited to such embodiments described below, and the technical idea of the present invention can be implemented in combination with other known technologies or other technologies having the same functions as those known technologies.
[0054] In the description of the following specific embodiments, in order to clearly show the structure and working mode of the present invention, it will be described with the help of many directional words, but "front", "rear", "left", "right", " Words such as "outside", "inside", "outwardly", "inwardly", "axially" and "radially" are to be understood as terms of convenience and should not be understood as words of limitation.
[0055] In the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "conn...
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Abstract
The invention relates to a dismantling technology of a deep foundation pit concrete support. The dismantling technology comprises the eight steps of construction preparation, determination of the position of a cutting line, chiseling of main reinforcements, fixing of a rope sawing machine, cutting of a middle section, cutting of a left section and a right section, hoisting of the left section andthe right section, and finishing. A supporting beam is divided into three sections, the middle section is of an inverted trapezoidal structure, lateral restraint is provided by means of two main ribsstripped from the front side and the rear side of the top, and the left section and the right section at two ends serve as supports of the middle section to provide support counterforce. After the middle section is lifted away, the left section and the right section can be regarded as cantilever beams, tensile force, shearing force and lateral restraint are provided by main ribs stripped from twocorners of the top, supporting reaction is provided by concrete at the lower end of the supporting beam, and the supporting beam is guaranteed to be stable and then is cut. Through optimization calculation, compared with a conventional support method supporting beam cutting and dismantling technology, the technology gives full play to the strength and rigidity of concrete and steel bars of the supporting beam, shortens the construction period, saves the support building and dismantling cost, and is safe and reliable.
Description
technical field [0001] The invention belongs to the field of engineering construction and relates to concrete supports, in particular to a process for removing concrete supports of deep foundation pits. Background technique [0002] The concrete support beams of subway deep foundation pits need to be dismantled after the construction of the main structure is completed and reaches the design strength. At present, the conventional removal method of the supporting beam in the prior art is: supporting the top of the support beam under the support + wire saw cutting method. [0003] Because the lower bracket of the support beam is a strip structure, its stability is relatively poor; moreover, setting up the bracket not only prolongs the construction period but also improves the construction cost. [0004] After searching, no effective technical means for solving the above technical problems has been found. Contents of the invention [0005] The purpose of the present inventio...
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Patent Timeline
Login to View More IPC IPC(8): E02D17/04E04G23/08
Inventor 耿生春张家新胡承桢张新明周伟善王宏章齐振宇杜文利张杰李霞王海兵程冲徐利安
Owner CHINA TIESIJU CIVIL ENG GROUP