CN220704553U - Profile steel combined supporting structure with axial force servo system - Google Patents
Profile steel combined supporting structure with axial force servo system Download PDFInfo
- Publication number
- CN220704553U CN220704553U CN202322428502.1U CN202322428502U CN220704553U CN 220704553 U CN220704553 U CN 220704553U CN 202322428502 U CN202322428502 U CN 202322428502U CN 220704553 U CN220704553 U CN 220704553U
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- steel
- purlin
- axial force
- servo system
- steel purlin
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 107
- 239000010959 steel Substances 0.000 title claims abstract description 107
- 239000002131 composite material Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 4
- 230000007613 environmental effect Effects 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000011161 development Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 4
- 239000004567 concrete Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
The utility model belongs to a section steel combined support structure with an axial force servo system in the field of underground space development. The technical proposal is as follows: an outer profile steel purlin and an inner profile steel purlin are arranged between the profile steel combined support and the enclosure wall; the outer profile steel purlin is connected with the enclosure wall; the inner side steel purlin is connected with the steel section combined support; the outer side steel purlin and the inner side steel purlin are arranged on the same plane; and a plurality of hydraulic jacks and a plurality of force-retaining boxes are arranged between the outer side steel purlin and the inner side steel purlin at intervals. The hydraulic support fully utilizes the advantage of rapid installation of the profile steel combined support without maintenance, and an axial force servo system is additionally arranged on the support system structure, and the axial force is actively applied through the hydraulic jack, so that the deformation of the enclosure wall can be effectively controlled, and the aim of environmental protection is achieved.
Description
Technical Field
The utility model belongs to the field of underground space development, and particularly relates to a section steel combined support structure with an axial force servo system.
Background
With the enhancement of urban underground space development, more and more large deep foundation pit projects are appeared. Numerous pit projects face complex environments and high environmental protection requirements. In order to strictly control foundation pit deformation and thereby realize the purpose of environmental protection, a large number of foundation pit engineering adopts a supporting structure system of plate type supporting piles (walls) combined with a plurality of horizontal inner supports. In the current industry, for large-area deep foundation pit engineering, reinforced concrete internal support is generally adopted, because the formation of a concrete supporting beam needs a plurality of procedures such as reinforcement binding, formwork supporting, pouring, maintenance and the like, the time required for forming effective strength of a supporting system is long, the adverse effect of shrinkage deformation of the concrete beam during maintenance exists, once foundation pit enclosure is excavated, irreversible continuous deformation occurs, and the enclosure is often subjected to larger accumulated deformation during the maintenance of the concrete supporting. Therefore, a supporting system capable of being quickly constructed and forming rigidity in a short time is needed, and the supporting system can actively control the deformation of the enclosure wall by actively applying prestress, so that the deformation of the enclosure wall is controlled in a safe target range, and finally, the aim of protecting the environment is fulfilled.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a section steel combined support structure with an axial force servo system. The hydraulic support fully utilizes the advantage of rapid installation of the profile steel combined support without maintenance, and an axial force servo system is additionally arranged on the support system structure, and the axial force is actively applied through the hydraulic jack, so that the deformation of the enclosure wall can be effectively controlled, and the aim of environmental protection is achieved.
The technical scheme of the utility model is as follows: a section steel combined support structure with an axial force servo system comprises a section steel combined support and a retaining wall; an outer profile steel purlin and an inner profile steel purlin are arranged between the profile steel combined support and the enclosure wall; the outer profile steel purlin is connected with the enclosure wall; the inner side steel purlin is connected with the steel section combined support; the outer side steel purlin and the inner side steel purlin are arranged on the same plane; and a plurality of hydraulic jacks and a plurality of force-retaining boxes are arranged between the outer side steel purlin and the inner side steel purlin at intervals.
Based on the technical characteristics: and a steel bracket is arranged between the outer side steel purlin and the enclosure wall and is used as a vertical supporting member of the outer side steel purlin.
Based on the technical characteristics: and a vertical support of the profile steel combined support is additionally arranged at the joint of the profile steel combined support and the profile steel surrounding purlin close to the inner side.
Based on the technical characteristics: and vertical stiffening plates are arranged in the outer side steel purlin and the inner side steel purlin.
Based on the technical characteristics: the oil jack is provided with an automatic monitoring servo system, and axial force is dynamically applied.
The basic idea of the utility model is: on one hand, the method is different from the conventional reinforced concrete in that the internal support is formed through a plurality of working procedures, the forming time is long, so that the large deformation accumulation of the enclosure wall is caused, an effective support stress system can be formed once the installation is completed by adopting the rapid-installation profile steel combined support, and the further development of the deformation of the enclosure wall is effectively controlled; on the other hand is different from conventional shaped steel combination support, through setting up two purlins of enclosing of interior, outer shaped steel and set up oil jack axial force servo between enclosing the purlin, through initiative dynamic application axial force in order to further control the enclosure wall deformation, also can realize the purpose that the enclosure wall is returned the top by a small margin.
By adopting the technical means, the deformation of the enclosure wall is further controlled by actively applying the axial force through the servo jack, and even the small-amplitude back-jacking of the enclosure wall can be realized so as to meet the requirement of environmental protection.
Drawings
FIG. 1 is a schematic plan view of a section steel composite support and enclosure wall connection.
FIG. 2 is a detail view of a double purlin connection between a section steel composite brace and a retaining wall.
FIG. 3 is a schematic view of a section steel composite support and retaining wall connection.
Fig. 4 is a detailed view of the sectional construction of the node a in fig. 1 to 3.
Fig. 5 is a section a-a of fig. 4.
The reference numerals are shown as follows: a section steel combined support 1; the outer side steel purlin 2; the inner side steel purlin 3; an oil jack 4; a steel corbel bracket 5; a retaining wall 6; a steel upright 7; stiffening plates 8; a force-retaining box 9; and a cross beam 10.
Detailed Description
The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present utility model and are not intended to be limiting.
In the description of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
As shown in fig. 1: the left side of the foundation pit is a higher area of foundation pit environmental protection, and the scheme of the utility model is adopted on the left side of the foundation pit. The right side of the foundation pit is a foundation pit environment unprotected area, and a supporting structure in the prior art is adopted, namely, the profile steel combined support 1 is directly connected with the enclosure wall through the enclosing purlin.
In the technical scheme of the utility model shown in fig. 2 to 5, a double enclosing purlin is arranged between a profile steel combined support 1 and a enclosing wall 6, and comprises an outer profile steel enclosing purlin 2 and an inner profile steel enclosing purlin 3, wherein the outer profile steel enclosing purlin 2 is connected with the enclosing wall 6; the inner side steel purlin 3 is connected with the steel composite support 1; the outer side steel purlin 2 and the inner side steel purlin 3 are arranged on the same plane; a plurality of hydraulic jacks 4 and a plurality of force-keeping boxes 9 are arranged between the outer side steel purlin 2 and the inner side steel purlin 3, and the hydraulic jacks 4 and the force-keeping boxes 9 are arranged at intervals. The oil jack 4 is provided with an automatic monitoring servo system, and can actively and dynamically apply axial force according to the requirements of calculation and actual measurement of the deformation control of the enclosure wall so as to control the deformation of the enclosure wall. The force-retaining box 9 can be used for locking the axial force after the hydraulic jack 4 applies the axial force, and can also be used as a safety buttress when the jack fails.
As shown in fig. 1 and 2: generally, the vertical supports of the profile steel combined support 1 are steel upright posts 7 distributed on two sides of the profile steel combined support 1; the steel upright posts 7 on the two sides support the profile steel combined support 1 through the cross beams 10. In the technical scheme of the utility model, the vertical support of the section steel combined support 1 is optimally increased, and the increased position is the position of the support section steel combined support 1 close to the inner section steel surrounding purlin 3 so as to reduce the overhanging span of the section steel combined support. Of course, other conventional vertical supports of the prior art may be used, the illustration of which is merely one embodiment.
As shown in fig. 3 to 5: the steel bracket 5 is arranged between the outer side steel purlin 2 and the enclosure wall 6 to serve as a vertical supporting member of the outer side purlin, meanwhile, the steel purlin in the oil jack and the protection box area is considered to be large in stress, and vertical stiffening plates 8 are arranged at the upper and lower positions of the outer side steel purlin and the inner side steel purlin web corresponding to the range of the oil jack so as to improve the lateral bending rigidity of the enclosure purlin.
A construction method of a section steel combined support structure with an axial force servo system comprises the following steps:
step one: when the foundation pit is excavated to the designed elevation of the support, the steel bracket 5 is constructed below the outer steel purlin 2 by installing the steel composite support 1, the outer steel purlin 2 and the inner steel purlin 3.
Step two: an oil jack 4 and a force-keeping box 9 which can apply axial force are arranged between the outer side steel purlin 2 and the inner side steel purlin 3, and the oil jack 4 is provided with an automatic monitoring servo system; the hydraulic jack 4 applies a pre-axial force to enable the section steel combined support 1 and the enclosure wall 6 to be in a tight pushing state.
Step three: the hydraulic jack 4 combines the measured deformation data of the enclosure wall 6 under the control of a servo system, automatically and dynamically applies axial force, balances the horizontal force outside the pit, which causes the deformation of the enclosure wall, and can control the deformation of the enclosure wall 6 by dynamically adjusting the axial force of the hydraulic jack 4.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.
Claims (5)
1. A section steel combined support structure with an axial force servo system comprises a section steel combined support (1) and a guard wall (6); the method is characterized in that: an outer profile steel enclosing purlin (2) and an inner profile steel enclosing purlin (3) are arranged between the profile steel combined support (1) and the enclosing wall (6); the outer side steel purlin (2) is connected with the enclosure wall (6); the inner side steel purlin (3) is connected with the steel combined support (1); the outer side steel purlin (2) and the inner side steel purlin (3) are arranged on the same plane; the steel purlin is characterized in that a plurality of oil jack (4) and a plurality of force-keeping boxes (9) are arranged between the outer side steel purlin (2) and the inner side steel purlin (3), and the oil jack (4) and the force-keeping boxes (9) are arranged at intervals.
2. The sectional steel composite support structure with axial force servo system according to claim 1, wherein: and a steel bracket (5) is arranged between the outer side steel purlin (2) and the enclosure wall (6) and is used as a vertical supporting member of the outer side steel purlin (2).
3. The sectional steel composite support structure with axial force servo system according to claim 1, wherein: and a vertical support of the profile steel combined support (1) is additionally arranged at the joint of the profile steel combined support (1) close to the inner profile steel surrounding purlin (3).
4. The sectional steel composite support structure with axial force servo system according to claim 1, wherein: the outer side steel purlin (2) and the inner side steel purlin (3) are internally provided with vertical stiffening plates (8).
5. The sectional steel composite support structure with axial force servo system according to claim 1, wherein: the oil jack (4) is provided with an automatic monitoring servo system, and axial force is dynamically applied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322428502.1U CN220704553U (en) | 2023-09-07 | 2023-09-07 | Profile steel combined supporting structure with axial force servo system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322428502.1U CN220704553U (en) | 2023-09-07 | 2023-09-07 | Profile steel combined supporting structure with axial force servo system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220704553U true CN220704553U (en) | 2024-04-02 |
Family
ID=90447725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322428502.1U Active CN220704553U (en) | 2023-09-07 | 2023-09-07 | Profile steel combined supporting structure with axial force servo system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220704553U (en) |
-
2023
- 2023-09-07 CN CN202322428502.1U patent/CN220704553U/en active Active
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