CN209636806U - A kind of steel support structure - Google Patents
A kind of steel support structure Download PDFInfo
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- CN209636806U CN209636806U CN201822047339.3U CN201822047339U CN209636806U CN 209636806 U CN209636806 U CN 209636806U CN 201822047339 U CN201822047339 U CN 201822047339U CN 209636806 U CN209636806 U CN 209636806U
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Abstract
The utility model discloses a kind of steel support structures, are related to building engineering field.The steel support structure includes braced bar system and triangular steel bracket, and the triangular steel bracket is arranged on two opposite diaphragm walls of foundation pit, and the braced bar system is lain in a horizontal plane on the triangular steel bracket；The braced bar system includes movable end, main body bar and fixing end, and the movable end and fixing end are fixedly connected with main body bar respectively；The main body bar is that plurality of sections of steel pipes is formed by connecting by ring flange；The movable end accommodates steel pipe by movable end and movable end and forms, and the movable end is welded by end steel plate and channel steel telescopic rod, and the channel steel telescopic rod is placed in the movable end to match therewith and accommodates in steel pipe；The channel steel telescopic rod of the movable end is provided with steel and carves mouth, and the steel carves the steel wedge for being inserted in mouth and matching therewith.The steel support structure of the utility model is during excavation of foundation pit, it can be achieved that Telescopic, so as to adjust bearing length, structure is simple, convenient for construction.
Description
Technical field
The utility model relates to building engineering field more particularly to a kind of steel support structures.
Background technique
In urban construction, the engineering of excavation of foundation pit is more and more, and Base hole supporting technology is the excavation of foundation pit work always
Key points and difficulties in journey.Wherein, in deep-foundation pit engineering, it can avoid the soil on side that can collapse by bracing members.In the prior art
In, generally directly the both ends of bracing members are fixed on the bracket of foundation pit.There are bracing members erroneous for installation, not easy-to-dismount to ask for it
Topic, and pre- California man of great strength is inconvenient.
Utility model content
In view of this, the utility model embodiment provides a kind of steel support structure, it can be real during excavation of foundation pit
Existing bracing members Telescopic, so as to adjust bearing length, structure is simple, convenient for construction.
To achieve the above object, the utility model embodiment provides a kind of steel support structure.
The steel support structure of the utility model embodiment includes: braced bar system and triangular steel bracket, the triangular steel bracket
It is arranged on two opposite diaphragm walls of foundation pit, the braced bar system is lain in a horizontal plane on the triangular steel bracket；The branch
Strut system includes movable end, main body bar and fixing end, and the movable end and fixing end are fixedly connected with main body bar respectively；The master
Body rod is that plurality of sections of steel pipes is formed by connecting by ring flange；The movable end accommodates steel pipe by movable end and movable end and forms, institute
It states movable end to be welded by end steel plate and channel steel telescopic rod, the channel steel telescopic rod, which is placed in the movable end to match therewith, to be held
It receives in steel pipe；The channel steel telescopic rod of the movable end is provided with steel and carves mouth, and the steel is carved the steel for being inserted in mouth and matching therewith and carved
Block.
Optionally, jack is provided between the movable end and the diaphragm wall of foundation pit.
Optionally, the jack is hydraulic jack.
Optionally, the plurality of sections of steel pipes is to roll welded still pipe；Wherein, the pipe crimping direction of the plurality of sections of steel pipes and steel plate pressure
It is consistent to prolong direction, and is welded using groove.
Optionally, the movable end of the braced bar system and fixing end are provided with 10 reinforcing bar hanging ring of Φ.
Optionally, the side of the steel wedge is set as slope surface.
Optionally, the movable end is provided with floor of putting more energy into.
One embodiment in above-mentioned utility model has the following advantages that or the utility model has the advantages that during excavation of foundation pit,
, it can be achieved that Telescopic, so as to adjust bearing length, structure is simple under the action of hydraulic jack, convenient for construction.
Further effect possessed by above-mentioned non-usual optional way adds hereinafter in conjunction with specific embodiment
With explanation.
Detailed description of the invention
Attached drawing is not constituteed improper limits to the present invention for more fully understanding the utility model.Wherein:
Fig. 1 is the overall schematic according to the steel support structure of the utility model embodiment；
Fig. 2 is the schematic diagram according to the steel support structure of the utility model embodiment；
Fig. 3 is the schematic diagram according to the steel support structure movable end of the utility model embodiment；
In figure, 1- braced bar system；2- triangular steel bracket；3- diaphragm wall；4- movable end；5- main body bar；6- fixing end；7- is living
Moved end head；8- movable end accommodates steel pipe；9- steel wedge；10- jack；11- supporting embedded part.
Specific embodiment
It explains below in conjunction with exemplary embodiment of the attached drawing to the utility model, implements including the utility model
The various details of example should think them only exemplary to help understanding.Therefore, those of ordinary skill in the art answer
It, can be with various changes and modifications are made to the embodiments described herein, without departing from the scope of the utility model when recognizing
And spirit.Equally, for clarity and conciseness, descriptions of well-known functions and structures are omitted from the following description.
It should be noted that it can be directly another when element is referred to as " being fixed on " or " being set to " another element
On one element or indirectly on another element.When an element is known as " being connected to " another element, it can
To be directly to another element or be indirectly connected on another element.
Fig. 1 is the overall schematic according to the steel support structure of the utility model embodiment；Fig. 2 is according to the utility model
The schematic diagram of the steel support structure of embodiment；Fig. 3 is the signal according to the steel support structure movable end of the utility model embodiment
Figure.
As depicted in figs. 1 and 2, a specific embodiment of the steel support structure includes braced bar system 1 and triangular steel bracket 2,
Triangular steel bracket 2 is arranged on two opposite diaphragm walls 3 of foundation pit, and braced bar system 1 is lain in a horizontal plane on triangular steel bracket 2.
Braced bar system 1 includes movable end 4, main body bar 5 and fixing end 6, and movable end 4 and fixing end 6 are fixedly connected with main body bar 5 respectively；
Main body bar 5 is that plurality of sections of steel pipes is formed by connecting by ring flange.In the present embodiment, plurality of sections of steel pipes is to roll welded still pipe；Wherein,
The pipe crimping direction of plurality of sections of steel pipes is consistent with steel plate rolling direction, and is welded using groove.
Movable end 4 accommodates steel pipe 8 by movable end 7 and movable end and forms, and movable end 7 is stretched by end steel plate and channel steel
Bar is welded, and channel steel telescopic rod is placed in the movable end to match therewith and accommodates in steel pipe 8.Then movable end 7 is similar to " drawer "
Structure, channel steel telescopic rod are placed in movable end and accommodate in steel pipe, can realize Telescopic under the action of jack, so as to adjust
Bearing length.The channel steel telescopic rod of movable end 7 is provided with steel and carves mouth, and steel carves the steel wedge 9 for being inserted in mouth and matching therewith.Its
In, the side of steel wedge 9 is set as slope surface, and movable end 7 is provided with floor of putting more energy into, and all can further promote the firm of support
Property.
And angle steel welding fabrication can be used in the triangular steel bracket 2 that the fixing end 6 of bracing members connects, what movable end 4 connected
Steel plate welding fabrication can be used in triangular steel bracket 2, is then fixed both ends bracket with electric welding after the completion of the setting-out of bracing members position
Apply prestressing force after setting up bracing members thereon after in the main reinforcement of corresponding position in time.Then, then use wirerope by steel branch
Tiltedly for support to guarantee its stability, specific fixed end angle bar frame form is as shown in Figure 3 for support.End diagonal brace is propped up in order to prevent
It supports stress to break away, Anti skid stop dog can be welded on pre-embedded steel slab.
Jack 10 is provided between movable end 4 and the diaphragm wall 3 of foundation pit.In the present embodiment, which is liquid
Press jack.
The movable end 4 and fixing end 6 of braced bar system 1 are provided with 10 reinforcing bar hanging ring of Φ, which is wirerope or steel
Muscle.It is linked on fender post by wirerope or reinforcing bar, it can further fall arrest.And the gad for fine tuning also answers spot welding to connect
It connects, prevented also from falling, improves stability.
Based on above-mentioned steel support structure, bracing members are set up and the pit earthwork excavation twice that be deep foundation pit construction inseparable
Critical process, bracing members set up great timeliness and harmony, and time, position and the prestressed size that bracing members are set up are direct
It is related to the stabilization of deep basal pit, bracing members erection must satisfy design requirement.Per pass bracing members earthwork slotting is excavated to bottom absolute altitude
When, it puts measure Support Position line immediately, set up support in time.Building enclosure is set to receive reaction of bearing effect in advance, reduction is gone along with sb. to guard him
The deformation of structure.The erection of bracing members is installed using pedrail crane, should ensure that bracing members are vertical with metope and by design requirement pair
Wall applies pre-applied force.
For the process of bracing members construction, specifically include that, based on support number, check mark transports to scene；Determine support bracket
Position is in place, span, and clears up smooth bracket face；After bracing members are with regard to bit correction, apply prestressing force, and fasten gad；It tears open
Except hydraulic jack.
Wherein, bracing members, which can be used, rolls welded still pipe, and steel plate wants straight, must not there is a warpage, surface must not have corrosion or
Trace is impacted, pipe crimping direction is consistent with steel plate rolling direction, and uses groove welding.And interior vertical, circumferential weld welds by hand, tube body
The reversed welding sequence of segmentation can be used in outer vertical, circumferential weld Lincoln weld, and tube body longitudinal joint mutually staggers, and welding wire is selected
H08MNA, Ying Fuhe GB1300-77 requirement, solder flux 330, weldquality check that rank is secondary standard.
Shearing resistance steel hoop is answered closely connected in steel pipe, and steel pipe and stirrup joint face will make blasting treatment, and tension steel hoop or so can
With steel pipe close to, need to reserve 4~6cm distance with steel pipe up and down, prevent lattice column protuberance influence bracing members stability, each contact position
Design requirement should be met by setting.Its surface should make antirust treatment after steel pipe, steel hoop, bolt combination.And steel pipe bolt hole should be
High-strength bolt hole.The processing and group weldering of the steel members such as steel pipe, node steel hoop, tension shear-steel plate, mounting flange, by processing
Factory works out mechanical processing technique design according to code requirement.
The welding of steel pipe and steel hoop, mounting flange, can be complete in factory.The steel pipe being processed into should be by its two sides
Design drawing requires after carrying out Unified number, can be in foundation pit.Support is connected or is welded using high-strength bolt, and bolt is tightened
After should have more 5~6 silk heads, and guarantee splice point intensity be not less than component itself cross-sectional strength.It at first will be in subterranean wall
Steel reinforcement cage corresponds to bracing members position pre-embedded steel slab, and steel plate and steel reinforcement cage weld, and after the completion of subterranean wall, digs out pre-embedded steel slab and carries out steel
The erection of support, bracing members use a fixing end, and the steel pipe of a movable end and intermediate more piece different length passes through ring flange
It is formed by connecting, every section length is depending on the circumstances.Bracing members merogenesis at the scene process by processing space, through legal periodical inspections acceptance(check)
Afterwards, it is transported using loop wheel machine to assembled in hole.Calibration is detected in advance for applying prestressed jack.
During bracing members installation, assembly is shifted to an earlier date according to engineering section width before support erection, and through examining qualification,
Determine solderless wound, cracking etc. mass defects, assembly complete bracing members misalignment of axe and deflection deformation specification allowed band it
It is interior.And pre-splicing take on the emergency that no less than 8 backup supports are dealt with to be likely to occur.
After soil layer is excavated to support decorating position, subterranean wall main reinforcement is dug out, welds bracket, bracing members are installed.Support is set up
It is lifted using pedrail crane one piece, support both ends set hook and are suspended on steel plate structure.After bracing members lifting in place, first not
Suspension hook is unclamped, steel plate is withstood into the segmented head pull-out of one end, then 2 hydraulic jacks are put into press position, for convenience of constructing
And keeping jack reinforcing consistent, 2 very heavy very useful brackets are fixed.Jack one end is pushed up on the steel plate, and one end is withstood on pedestal,
Connect after oil pipe can turn on pump apply prestressing force, prestress application in place after, with the gap of gad block stretching end point and weld.
Then jack is unclamped in oil return, unlocks hoisting wirerope, completes the installation of this root support.
Keeping a close eye on when construction prevents construction machinery from touching bracing members, and bracing members is avoided to cause unstability due to by lateral load.
Precision in place is supported to meet related specification requirement, axis of support horizontal location deviation supports both ends poor location within ± 30mm
Different absolute altitude is not more than 20mm, and is not more than the 1/600 of bearing length, and support deflection degree is not more than 1/1000.
After the completion of support is set up, for the integrated support effect for guaranteeing support system.The each of front and back is added in support prestressing force
Within 12h, monitoring frequency is encrypted, when finding loss of prestress or building enclosure rate of deformation without obvious convergence, is added with prestressing force
To design value.Main body, which is gone along with sb. to guard him in foundation pit thing both ends, more oblique angle supports.Since bracing members are to prop up on the steel plate, bearing diagonal
Support bracket must also use steel construction.Using welded steel plate, the connection with steel plate is using welding.
According to the brace pre axial force numerical value of calculating, 2 100T or 2 200T hydraulic jacks is selected to withstand on movable end axial location
Application axle power is carried out, according to the relationship of Hydraulic Jack table scale and pressure, brace pre axial force is converted into jack pressure
Meter reading makes its one-to-one correspondence.Each layer bracing members brace pre axial force is different, is the 70% of design axle power.
Above-mentioned specific embodiment does not constitute the limitation to scope of protection of the utility model.Those skilled in the art answer
Should it is realized that, depend on design requirement and other factors, various modifications, combination, sub-portfolio and substitution can occur.
Any modifications, equivalent substitutions and improvements made within spirit of the present utility model and principle etc. should be included in practical
Within the scope of novel protected.
Claims (7)
1. a kind of steel support structure, including braced bar system (1) and triangular steel bracket (2), which is characterized in that the triangular steel bracket
(2) it is arranged on two opposite diaphragm walls (3) of foundation pit, the braced bar system (1) lies in a horizontal plane in the triangular steel bracket
(2) on；
The braced bar system (1) includes movable end (4), main body bar (5) and fixing end (6), the movable end (4) and fixing end
(6) it is fixedly connected respectively with main body bar (5)；The main body bar (5) is that plurality of sections of steel pipes is formed by connecting by ring flange；
The movable end (4) accommodates steel pipe (8) by movable end (7) and movable end and forms, and the movable end (7) is by end steel
Plate and channel steel telescopic rod are welded, and the channel steel telescopic rod is placed in the movable end to match therewith and accommodates in steel pipe (8)；The work
The channel steel telescopic rod of moved end head (7) is provided with steel and carves mouth, and the steel carves the steel wedge (9) for being inserted in mouth and matching therewith.
2. steel support structure according to claim 1, which is characterized in that the diaphragm wall (3) of the movable end (4) and foundation pit
Between be provided with jack (10).
3. steel support structure according to claim 2, which is characterized in that the jack (10) is hydraulic jack.
4. steel support structure according to claim 1, which is characterized in that the plurality of sections of steel pipes is to roll welded still pipe；Its
In, the pipe crimping direction of the plurality of sections of steel pipes is consistent with steel plate rolling direction, and is welded using groove.
5. steel support structure according to claim 1, which is characterized in that the movable end (4) of the braced bar system (1) and solid
Fixed end (6) is provided with 10 reinforcing bar hanging ring of Φ.
6. steel support structure according to claim 1, which is characterized in that the side of the steel wedge (9) is set as slope surface.
7. steel support structure according to claim 1, which is characterized in that the movable end (7) is provided with floor of putting more energy into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822047339.3U CN209636806U (en) | 2018-12-11 | 2018-12-11 | A kind of steel support structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822047339.3U CN209636806U (en) | 2018-12-11 | 2018-12-11 | A kind of steel support structure |
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| CN209636806U true CN209636806U (en) | 2019-11-15 |
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ID=68474285
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| CN201822047339.3U Active CN209636806U (en) | 2018-12-11 | 2018-12-11 | A kind of steel support structure |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111005387A (en) * | 2019-11-30 | 2020-04-14 | 云南建投第十四建设有限公司 | Deep foundation pit prestress support replacement support construction method |
| CN111424677A (en) * | 2020-04-03 | 2020-07-17 | 上海市机械施工集团有限公司 | Foundation pit supporting structure |
| CN111576442A (en) * | 2020-05-27 | 2020-08-25 | 长安大学 | Steel cross brace device with adjustable axial force |
| CN111593736A (en) * | 2020-05-16 | 2020-08-28 | 张继红 | Superposed waist beam structure for foundation pit support |
| CN111997031A (en) * | 2020-08-15 | 2020-11-27 | 广东劲拓建设工程有限公司 | Method for enhancing bearing capacity of composite foundation and rigid pile thereof |
| CN112177011A (en) * | 2020-09-07 | 2021-01-05 | 中国一冶集团有限公司 | Foundation pit force application device, foundation pit steel support device and foundation pit steel support installation method |
| CN112195936A (en) * | 2020-11-06 | 2021-01-08 | 上海巨鲲科技有限公司 | Device and method for applying prestress to beam string |
| CN112376928A (en) * | 2020-10-21 | 2021-02-19 | 上海建工五建集团有限公司 | Installation method of slidable support system suitable for vertical narrow space |
| CN114016516A (en) * | 2021-11-08 | 2022-02-08 | 贵州建工集团第一建筑工程有限责任公司 | Concrete-steel structure mixed angle brace construction method |
| CN114482068A (en) * | 2022-01-27 | 2022-05-13 | 厦门安捷建筑工程有限公司 | Self-locking type combined unloading device for foundation pit steel supporting system |
| CN114562606A (en) * | 2022-03-07 | 2022-05-31 | 中国建筑第四工程局有限公司 | Method for increasing jacking stroke of short-stroke jack |
| CN114960667A (en) * | 2022-05-18 | 2022-08-30 | 河海大学 | Steel pipe support erection construction process |
| CN114991170A (en) * | 2022-06-23 | 2022-09-02 | 中国水利水电第七工程局有限公司 | Hollow interlayer concrete-filled steel tube supporting system and construction method thereof |
| CN115404877A (en) * | 2022-08-31 | 2022-11-29 | 中建四局第六建设有限公司 | Double-spliced I-shaped steel support replacing device with adjustable pre-pressure |
| CN117626999A (en) * | 2024-01-25 | 2024-03-01 | 中铁十五局集团有限公司 | Hinged locking type steel support applied to foundation pit and construction method thereof |
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2018
- 2018-12-11 CN CN201822047339.3U patent/CN209636806U/en active Active
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111005387A (en) * | 2019-11-30 | 2020-04-14 | 云南建投第十四建设有限公司 | Deep foundation pit prestress support replacement support construction method |
| CN111424677A (en) * | 2020-04-03 | 2020-07-17 | 上海市机械施工集团有限公司 | Foundation pit supporting structure |
| CN111593736A (en) * | 2020-05-16 | 2020-08-28 | 张继红 | Superposed waist beam structure for foundation pit support |
| CN111576442A (en) * | 2020-05-27 | 2020-08-25 | 长安大学 | Steel cross brace device with adjustable axial force |
| CN111997031A (en) * | 2020-08-15 | 2020-11-27 | 广东劲拓建设工程有限公司 | Method for enhancing bearing capacity of composite foundation and rigid pile thereof |
| CN112177011A (en) * | 2020-09-07 | 2021-01-05 | 中国一冶集团有限公司 | Foundation pit force application device, foundation pit steel support device and foundation pit steel support installation method |
| CN112376928A (en) * | 2020-10-21 | 2021-02-19 | 上海建工五建集团有限公司 | Installation method of slidable support system suitable for vertical narrow space |
| CN112195936A (en) * | 2020-11-06 | 2021-01-08 | 上海巨鲲科技有限公司 | Device and method for applying prestress to beam string |
| CN114016516A (en) * | 2021-11-08 | 2022-02-08 | 贵州建工集团第一建筑工程有限责任公司 | Concrete-steel structure mixed angle brace construction method |
| CN114482068A (en) * | 2022-01-27 | 2022-05-13 | 厦门安捷建筑工程有限公司 | Self-locking type combined unloading device for foundation pit steel supporting system |
| CN114562606A (en) * | 2022-03-07 | 2022-05-31 | 中国建筑第四工程局有限公司 | Method for increasing jacking stroke of short-stroke jack |
| CN114562606B (en) * | 2022-03-07 | 2024-03-01 | 中国建筑第四工程局有限公司 | Method for increasing jacking pipe stroke of short-stroke jack |
| CN114960667A (en) * | 2022-05-18 | 2022-08-30 | 河海大学 | Steel pipe support erection construction process |
| CN114991170A (en) * | 2022-06-23 | 2022-09-02 | 中国水利水电第七工程局有限公司 | Hollow interlayer concrete-filled steel tube supporting system and construction method thereof |
| CN114991170B (en) * | 2022-06-23 | 2023-06-13 | 中国水利水电第七工程局有限公司 | Hollow interlayer steel pipe concrete supporting system and construction method thereof |
| CN115404877A (en) * | 2022-08-31 | 2022-11-29 | 中建四局第六建设有限公司 | Double-spliced I-shaped steel support replacing device with adjustable pre-pressure |
| CN117626999A (en) * | 2024-01-25 | 2024-03-01 | 中铁十五局集团有限公司 | Hinged locking type steel support applied to foundation pit and construction method thereof |
| CN117626999B (en) * | 2024-01-25 | 2024-04-02 | 中铁十五局集团有限公司 | Hinged locking type steel support applied to foundation pit and construction method thereof |
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