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Construction device and a construction method for safe construction of underground structure

A technology for underground structures and construction devices, which is applied in basic structure engineering, excavation, construction, etc., can solve the problems of large impact on the surrounding environment and difficult construction.

Pending Publication Date: 2020-10-09
CITIC GUOAN CONSTR GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the existing construction, for deep foundation pits (excavation depth exceeding 5 meters (including 5 meters), or depth not exceeding 5 meters, but the geological conditions, surrounding environment and underground pipelines are particularly complex foundation pit engineering ) During the construction process, there are a series of problems such as difficult construction and great impact on the surrounding environment

Method used

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  • Construction device and a construction method for safe construction of underground structure
  • Construction device and a construction method for safe construction of underground structure
  • Construction device and a construction method for safe construction of underground structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] like Figure 1 to Figure 4 As shown, the construction device used for the safe construction of underground structures includes a foundation pit support assembly, and the foundation pit support assembly includes a plurality of support plates arranged in sequence along the circumferential direction of the foundation pit, and the support plates Including multiple hoarding panels 1 and multiple soil retaining panels 21;

[0063] The soil retaining boards 21 are arranged at intervals along the circumferential direction of the foundation pit, and a coaming board 1 is arranged between any two adjacent soil retaining boards 21, and the outer sides of each coaming board 1 are pressed against the corresponding two soil retaining boards. on the inner side of the plate 21;

[0064] The shroud 1 is a hollow plate structure;

[0065] The coaming plate 1 includes an outer plate for connecting with the foundation pit and an inner plate close to the center of the foundation pit, and t...

Embodiment 2

[0073] like Figure 1 to Figure 4 As shown, this embodiment is further limited on the basis of Embodiment 1: in order to use this device to form all the protection for the wall of the foundation pit, it is set as follows: the surrounding board 1 and the soil retaining board 21 are surrounded by a cylindrical structure, each Vertical sealing strips are arranged between the coaming plate 1 and the earth retaining plate 21 in contact with it. Adopt this scheme, utilize described sealing strip, make the circulation path of foundation pit dewatering be limited to pass coaming plate 1, like this, on the flow of well point dewatering and control well point dewatering, it is convenient for those skilled in the art to obtain balance point: namely Satisfy the requirement of precipitation, and also meet the consideration of the safety of the surrounding bottom layer, such as by controlling the outlet flow of the water outlet 13, to achieve the above purpose.

[0074] In order to facilit...

Embodiment 3

[0089] like Figure 1 to Figure 4 As shown, the present embodiment is further limited on the basis of embodiment 1,

[0090] As a technical solution to facilitate the constraint of the coaming plate 1 on the edge of the foundation pit, it is set to: further include a support frame for supporting the coaming plate 1, the support frame includes a vertical pole 3 and is arranged along the axial direction of the vertical pole 3 A plurality of cross bars 2, the cross bar 2 is used as a support between the vertical bar 3 and the inner side of each coaming board 1, and the length of the cross bar 2 is adjustable; as a kind of cross bar 2, the length is adjustable and easy to adjust The specific scheme of the cross bar 2 includes a threaded cylinder 4 and a threaded rod 5 connected in series, the threaded cylinder 4 is threadedly connected with the threaded rod 5 and is coaxial, the threaded cylinder 4 is connected with the vertical rod 3, and the threaded cylinder 4 is connected with...

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Abstract

The invention discloses a construction device and a construction method for safe construction of an underground structure. The construction device comprises a foundation pit support assembly, whereinthe foundation pit support assembly comprises a plurality of support plates, each support plate comprises a plurality of surrounding plates and a plurality of soil retaining plates; each surrounding plate is a hollow plate-shaped structure, the surrounding plate comprises an outer side plate used for being connected with a foundation pit and an inner side plate close to the center of the foundation pit, a plurality of communication holes are formed in each outer side plate, and a drain hole is formed in each inner side plate; and a grouting pipe is arranged in a gap between any two adjacent soil retaining plates, and the outlet end of a grouting hole faces the side, away from each surrounding plate, of each grouting pipe. The construction method is based on the construction device. By adopting the device and the method, the support can be provided for foundation pit construction, so that the construction safety is facilitated; and meanwhile, after the foundation pit construction is completed, voids of a soil layer on the foundation pit edge caused by foundation pit construction can be partially or completely filled, so that the stability of the stratum around the foundation pit isfacilitated.

Description

technical field [0001] The invention relates to the technical field of underground engineering construction, in particular to a construction device and a construction method for safe construction of underground structures. Background technique [0002] The foundation pit generally refers to the earth pit excavated at the design position of the building foundation according to the elevation of the building foundation and the plane size of the foundation. For foundation pit construction, the foundation pit support device is used as a temporary structure and a safety protection structure to prevent collapse during foundation pit construction. At the same time, during the excavation and construction of the foundation pit, the precipitation of the foundation pit needs to be considered. [0003] Sand-egg geology generally has loose and water-rich strata. In the foundation pit construction of water-rich sand and pebble strata close to important buildings, it is necessary to pay sp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/02E02D17/04E02D19/06
CPCE02D17/02E02D17/04E02D19/06
Inventor 刘建赵久彰乐玥王刚黄继军杨荣
Owner CITIC GUOAN CONSTR GRP CO LTD
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