Construction method of earthwork backfilling in the overhead area of integrated pipe gallery conversion shaft
A technology of comprehensive pipe gallery and construction method, which is applied in filling, foundation structure engineering, construction, etc., and can solve problems such as failure to form supports in time, concrete cracking of comprehensive pipe gallery, etc.
Active Publication Date: 2022-07-01
中建八局轨道交通建设有限公司
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Problems solved by technology
[0004] In order to overcome the defects in the existing technology, a construction method of earthwork backfilling in the overhead area of the integrated pipe gallery conversion shaft is now provided to solve the problem that the backfilling of the overhead area under the integrated pipe gallery cannot form supports in time and cause the concrete of the integrated pipe gallery to crack.
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[0025] The present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the related invention, rather than limit the invention. In addition, it should be noted that, for the convenience of description, only the parts related to the invention are shown in the drawings.
[0026] It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
[0027] refer to Figure 1 to Figure 5 As shown, the present invention provides a construction method for earthwork backfilling in the overhead area of a comprehensive pipe gallery conversion shaft, comprising the following steps:
[0028] S1: ...
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The invention discloses a construction method for earthwork backfilling in the overhead area of a comprehensive pipe gallery conversion shaft. The slope protection of the integrated pipe gallery in the overhead area is broken and a step is built along the slope direction of the slope protection. A support frame is arranged on the step, and the support frame is supported on At the center stress point of the bottom plate of the integrated pipe gallery, after the support frame is supported on the center stress point, backfill the overhead area and compact the earth until the remaining space between the compacted earth and the bottom plate cannot continue to be compacted. The grouting pipe is buried, and the remaining space is filled with earthwork to close the overhead area. The lower end of the grouting pipe extends into the earthwork in the remaining space, and the remaining space is pressurized and injected into foam concrete through the grouting pipe. The earthwork and foam concrete Secured to support the base plate. The invention solves the problem that the backfill of the overhead area under the comprehensive pipe gallery cannot form supports in time, which leads to the cracking of the concrete of the comprehensive pipe gallery.
Description
technical field [0001] The invention relates to the technical field of building construction, in particular to a construction method for earthwork backfilling in an overhead area of an integrated pipe gallery conversion shaft. Background technique [0002] In construction, the comprehensive pipe gallery is generally an underground deep foundation pit structure that adopts the method of grading and excavation, and the area where it connects with the underground road and slope protection creates an overhead area. [0003] When backfilling the overhead area, because the overhead area is too long and its clearance does not meet the mechanical and human operation conditions, the backfilled soil cannot support the stress points of the overly long overhead area in time, resulting in the passage of the integrated pipe gallery. The stress concentration in the long overhead area leads to the cracking of the concrete structure at the stress point. On the other hand, it brings a lot o...
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IPC IPC(8): E02D17/18E02D15/00
CPCE02D17/18E02D15/00
Inventor 赵丰何伟车家伟马伟侯海锟张国君姜海生侯海林赵言
Owner 中建八局轨道交通建设有限公司