CN106193053A - A kind of subway foundation pit assembled horizontal struts system and assembling constructing method thereof - Google Patents
A kind of subway foundation pit assembled horizontal struts system and assembling constructing method thereof Download PDFInfo
- Publication number
- CN106193053A CN106193053A CN201610812925.5A CN201610812925A CN106193053A CN 106193053 A CN106193053 A CN 106193053A CN 201610812925 A CN201610812925 A CN 201610812925A CN 106193053 A CN106193053 A CN 106193053A
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- China
- Prior art keywords
- foundation pit
- support platform
- horizontal support
- enclosure structure
- transmission mechanism
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
Abstract
A kind of subway foundation pit assembled horizontal struts system and assembling constructing method thereof, this system includes the horizontal support platform being horizontally supported between foundation pit enclosure structure, described horizontal support platform is uniformly distributed along length and the short transverse parallel interval of foundation ditch, being connected between described horizontal support platform and foundation pit enclosure structure and have force transmission mechanism, described force transmission mechanism is along the side uniform intervals distribution of horizontal support platform.Effective assembled that the present invention utilizes force transmission mechanism to achieve between horizontal support platform and foundation pit enclosure structure connects, this force transmission mechanism is arranged between horizontal support platform and foundation pit enclosure structure, therefore, force transmission mechanism can drive horizontal support platform vertically movable along foundation pit enclosure structure in the case of bearing horizontal supporting force, conveniently carry out the most vertically movable of multiple-layer horizontal support platform, guaranteeing each layer regulation during assembling, efficiency of construction is high, and safely and effectively.
Description
Technical field
The present invention relates to building engineering field, particularly a kind of subway foundation pit construction system and construction method thereof.
Background technology
The main support system used currently for subway foundation pit is mainly armored concrete and steel pipe to support, particularly
Steel pipe support therein, it is horizontally disposed with spacing often less than 3m.Flat shape long and narrow based on subway station, rectangle is special
Point, subway foundation pit earth excavation typically uses step to move back and digs the method for relay and carry out.The spacing mistake arranged due to horizontal support
In closely, operation side is little, and earth excavation machinery often uses the less excavating equipment of dipper capacity, by the way of step relay
Complete earth excavation, greatly reduce earth excavation work efficiency；On the other hand, when steel pipe support lifts by root, because relatively
Close horizontal support spacing, it is necessary to avoid the mutual collision supported during lifting, lift in place after still need and be supported end welding
Fix and support pre-stress construction, supporting installation difficulty, efficiency of construction underground.
It is known that the principle that pit earthwork excavation must comply with " first support and dig afterwards " is carried out, found by investigation, even if adopting
The digging machine less by the relatively low dipper capacity of work efficiency carries out earth excavation, and the installation efficiency of support can not meet the most far away earth excavation and want
Asking, earth excavation and support are installed both and the most all cannot be realized mutually meeting, and cause horizontal support
Install and often lag behind earth excavation, bury huge potential safety hazard for base pit engineering.
To sum up, for the subway foundation pit engineering of current sleeve configuration rule, existing horizontal struts system and the earthwork is used to open
Excavation method, all causes certain difficulty on duration and safety to engineering construction.
Summary of the invention
It is an object of the invention to provide a kind of subway foundation pit assembled horizontal struts system and assembling constructing method thereof, solve
The technical problem that foundation pit construction efficiency of determining is low, safety cannot ensure；And solve the problem that foundation ditch supports assembly process complexity.
For achieving the above object, the present invention adopts the following technical scheme that
A kind of subway foundation pit assembled horizontal struts system, puts down including the horizontal support being horizontally supported between foundation pit enclosure structure
Platform, described horizontal support platform is uniformly distributed along length and the short transverse parallel interval of foundation ditch, described horizontal support platform
Being connected with between foundation pit enclosure structure and have force transmission mechanism, described force transmission mechanism divides along the side uniform intervals of horizontal support platform
Cloth.
Described force transmission mechanism is connected to the jack of horizontal support platform end, is connected to the rotation pass of jack front end
Joint, the rolling wheel support being hinged on cradle head and the roller being hinged on rolling wheel support.
Described rolling wheel support is triangular plate or bends strip board at an acute angle, its drift angle and cradle head be hinged,
Two base angle symmetries are hinged with a roller.
The end of described jack is connected with horizontal support platform by connecting plate.
Described subway foundation pit assembled horizontal struts system also includes guide rail and lifting drive unit.
Described guide rail is arranged along the length direction parallel interval of foundation pit enclosure structure；Described guide rail is along base by rail unit
The short transverse of pit enclosure structure is vertically spliced.
Described lifting drive unit is connected with horizontal support platform by unit rack.
Described unit rack includes being connected to the A-frame of horizontal support platform end, being connected to A-frame end
Upper latch bearing and be set in parallel in the lower latch bearing below latch bearing.
Described upper latch bearing and lower latch bearing are detachable with the counter-force hole of guide rail by upper latch and lower latch respectively
Connect.
Described lifting drive unit is hydraulic jack, and including cylinder barrel and piston rod, wherein cylinder barrel is fixed with upper latch bearing
Connecting, one end of piston rod is flexibly connected through upper latch bearing with cylinder barrel, the other end is fixing with lower latch bearing is connected.
Described force transmission mechanism is connected between horizontal support platform and guide rail, and its roller is connected with slide.
Be provided with one group along foundation ditch short transverse parallel interval between described guide rail and foundation pit enclosure structure and enclose purlin, described in enclose purlin
The elongated setting of length direction along foundation pit enclosure structure.
The assembling constructing method of a kind of assembled horizontal struts system of subway foundation pit as mentioned, it is characterised in that concrete
Step is as follows:
Step one, is assembled into integrated support unit by horizontal support platform, force transferring structure.
Step 2, hangs the support unit assembled to designed elevation position as ground floor support unit.
Step 3, accurately adjusts plan-position and the perpendicularity of ground floor support unit.
Step 4, the jack in jacking force transferring structure, make roller tightly push up solid on foundation pit enclosure structure.
Step 5, the excavation ground floor soil body is to designed elevation position.
Step 6, hangs another support unit entirety to designed elevation position as second layer support unit.
Step 7, accurately adjusts second layer support unit plan-position and perpendicularity.
Step 8, the jack in jacking force transferring structure, make roller tightly push up solid on foundation pit enclosure structure.
Step 9, shrinks the jack of ground floor support unit force transmission mechanism, utilizes roller along foundation pit enclosure structure row
Walk, ground floor support unit is dropped to designed elevation position.
Step 10, excavates the second layer soil body.
Step 11, repetition step 6 to step 10, until completing the earth excavation construction of foundation ditch.
Compared with prior art the invention have the characteristics that and beneficial effect:
Effective assembled that the present invention utilizes force transmission mechanism to achieve between horizontal support platform and foundation pit enclosure structure connects, should
Force transmission mechanism is arranged between horizontal support platform and foundation pit enclosure structure, including jack, cradle head and roller, by thousand
Jin top applies precompression to foundation pit enclosure structure, and provides support force for roller；Jack and rolling wheel support pass through cradle head
Connecting, rolling wheel support can carry out the rotation adjustment of little scope along with the plane of foundation pit enclosure structure, and adapts to foundation pit enclosure knot
Structure and the rotation of horizontal support platform, to guarantee that force transmission mechanism freely can be walked along foundation pit enclosure structure；The size of roller
Can calculate according to the support force size of jack transmission and determine, one or more rollers can be arranged according to calculating and closed by rotation
Joint connects into entirety.
Precompression can be applied by jack pair foundation pit enclosure structure before excavation of foundation pit, and then control in Excavation Process
The deformation of building enclosure horizontal direction, and the support force that jack is reached by roller puts on foundation pit enclosure with the form of line load
Structure, drives horizontal support platform to move along foundation depth direction, it is ensured that sub-truss in the case of bearing horizontal supporting force
Remaining to play the effect of support during movement, therefore, force transmission mechanism can drive in the case of bearing horizontal supporting force
Horizontal support platform is vertically movable along foundation pit enclosure structure, conveniently carries out the most vertically movable of multiple-layer horizontal support platform, really
Protecting each layer regulation during assembling, efficiency of construction is high, and safely and effectively.
Accompanying drawing explanation
The present invention will be further described in detail below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of the embodiment of the present invention one.
Fig. 2 is the main TV structure schematic diagram of the embodiment of the present invention one.
Fig. 3 is the structural representation of the embodiment of the present invention one force transmission mechanism.
Fig. 4 is the structural representation of the embodiment of the present invention two.
Fig. 5 is the plan structure schematic diagram of the embodiment of the present invention two.
Fig. 6 is the main TV structure schematic diagram of the embodiment of the present invention two.
Fig. 7 is the structural representation of the embodiment of the present invention two horizontal support platform.
Reference: 1-horizontal support platform, 2-lifting drive unit, 3-guide rail, 4-adjustable seats assembly, 5-
Foundation pit enclosure structure, 6-unit rack, 7-enclose purlin, 8-force transmission mechanism, 9-roller, 10-jack, 11-cradle head,
12-rolling wheel support, 13-Guan Liang.
Detailed description of the invention
Embodiment one sees shown in Fig. 1, Fig. 2, Fig. 3, this subway foundation pit assembled horizontal struts system, props up including level
Support horizontal support platform 1 between foundation pit enclosure structure 5, described horizontal support platform 1 is along the length of foundation ditch and height side
It is uniformly distributed to parallel interval, it is characterised in that: it is connected between described horizontal support platform 1 and foundation pit enclosure structure 5 and has power transmission
Mechanism 8, described force transmission mechanism 8 is along the side uniform intervals distribution of horizontal support platform.
Shown in Figure 3, described force transmission mechanism 8 be connected to horizontal support platform 1 end jack 10, be connected to very heavy
The top cradle head 11 of front end, the rolling wheel support 12 being hinged on cradle head 11 and the roller 9 being hinged on rolling wheel support 12.
Described rolling wheel support 12 is triangular plate or bends strip board at an acute angle, and its drift angle cuts with scissors with cradle head 11
Connect, two base angle symmetries are hinged with a roller 9.
The end of described jack 10 is connected with horizontal support platform 1 by connecting plate.
Embodiment two sees shown in Fig. 4, Fig. 5, Fig. 6, Fig. 7, unlike embodiment one, and described subway foundation pit assembled
Horizontal struts system also includes guide rail 3 and lifting drive unit 2；Described guide rail 3 is parallel along the length direction of foundation pit enclosure structure 5
Interval is arranged；Described guide rail 3 is vertically to be spliced along the short transverse of foundation pit enclosure structure 5 by rail unit；Described lead
Rail 3 is connected with foundation pit enclosure structure 5 by adjustable seats assembly 4；Described lifting drive unit 2 is by unit rack 6 and level
Support platform 1 connects.
Shown in Figure 7, described unit rack 6 includes being connected to the A-frame of horizontal support platform 1 end, being connected to
The upper latch bearing of A-frame end and be set in parallel in the lower latch bearing below latch bearing；Described upper latch props up
Seat and lower latch bearing are removably connected by the counter-force hole of upper latch and lower latch with guide rail respectively.
Described lifting drive unit 2 is hydraulic jack, and including cylinder barrel and piston rod, wherein cylinder barrel is fixed with upper latch bearing
Connecting, one end of piston rod is flexibly connected through upper latch bearing with cylinder barrel, the other end is fixing with lower latch bearing is connected.
Described force transmission mechanism 8 is connected between horizontal support platform and guide rail, and its roller 9 is slidably connected with guide rail 3.
It is provided with one group along foundation ditch short transverse parallel interval between described guide rail 3 and foundation pit enclosure structure 5 and encloses purlin 7, described
Enclose the purlin elongated setting of length direction along foundation pit enclosure structure 5.
The assembling constructing method of a kind of assembled horizontal struts system of subway foundation pit as mentioned, it is characterised in that concrete
Step is as follows:
Step one, is assembled into integrated support unit by horizontal support platform 1, force transferring structure 8.
Step 2, hangs the support unit assembled to designed elevation 1 position as ground floor support unit.
Step 3, accurately adjusts plan-position and the perpendicularity of ground floor support unit.
Step 4, the jack in jacking force transferring structure 8, make roller tightly push up and admittedly face on foundation pit enclosure structure 5
Time connect, and by force transmission mechanism, foundation ditch lateral earth pressure outward is reached on horizontal support platform.
Step 5, the excavation ground floor soil body is to designed elevation 2 position.
Step 6, hangs another support unit entirety to designed elevation 1 position as second layer support unit.
Step 7, accurately adjusts second layer support unit plan-position and perpendicularity.
Step 8, the jack in jacking force transferring structure 8, make roller tightly push up solid on foundation pit enclosure structure 5.
Step 9, shrinks the jack 10 of ground floor support unit force transmission mechanism, utilizes roller along foundation pit enclosure structure 5
Walk, carry out the vertically movable of horizontal support platform, ground floor support unit is dropped to designed elevation 2 position.
Step 10, excavates the second layer soil body 13.
Step 11, repetition step 6 to step 10, until completing the earth excavation construction of foundation ditch.
Claims (10)
1. a subway foundation pit assembled horizontal struts system, including the level being horizontally supported between foundation pit enclosure structure (5)
Support platform (1), described horizontal support platform (1) is uniformly distributed along length and the short transverse parallel interval of foundation ditch, and it is special
Levy and be: being connected between described horizontal support platform (1) and foundation pit enclosure structure (5) has force transmission mechanism (8), described force transmission mechanism
(8) along the side uniform intervals distribution of horizontal support platform.
Subway foundation pit assembled horizontal struts system the most according to claim 1, it is characterised in that: described force transmission mechanism
(8) jack (10) being connected to horizontal support platform (1) end, the cradle head (11) being connected to jack front end, hinged
Rolling wheel support (12) on cradle head (11) and the roller (9) being hinged on rolling wheel support (12).
Subway foundation pit assembled horizontal struts system the most according to claim 2, it is characterised in that: described rolling wheel support
(12) being triangular plate or bend strip board at an acute angle, its drift angle is hinged with cradle head (11), two base angle symmetries hinges
It is connected to a roller (9).
Subway foundation pit assembled horizontal struts system the most according to claim 2, it is characterised in that: described jack (10)
End be connected with horizontal support platform (1) by connecting plate.
5. according to the subway foundation pit assembled horizontal struts system described in Claims 1-4 any one, it is characterised in that: institute
State subway foundation pit assembled horizontal struts system and also include guide rail (3) and lifting drive unit (2)；
Described guide rail (3) is arranged along the length direction parallel interval of foundation pit enclosure structure (5)；Described guide rail 3 is by rail unit
Short transverse along foundation pit enclosure structure (5) is vertically spliced；
Described lifting drive unit (2) is connected with horizontal support platform (1) by unit rack (6).
Subway foundation pit assembled horizontal struts system the most according to claim 5, it is characterised in that: described unit rack
(6) A-frame including being connected to horizontal support platform (1) end, the upper latch bearing being connected to A-frame end and
It is set in parallel in the lower latch bearing below latch bearing；
Described upper latch bearing and lower latch bearing are removably connected by the counter-force hole of upper latch and lower latch with guide rail respectively.
Subway foundation pit assembled horizontal struts system the most according to claim 6, it is characterised in that: described lifting drive list
Unit (2) is hydraulic jack, and including cylinder barrel and piston rod, wherein cylinder barrel is fixing with upper latch bearing is connected, and one end of piston rod is worn
Cross that latch bearing and cylinder barrel are flexibly connected, the other end is fixed with lower latch bearing and is connected.
Subway foundation pit assembled horizontal struts system the most according to claim 7, it is characterised in that: described force transmission mechanism
(8) being connected between horizontal support platform and guide rail, its roller (9) is slidably connected with guide rail (3).
Subway foundation pit assembled horizontal struts system the most according to claim 8, it is characterised in that: described guide rail 3 and base
Be provided with one group along foundation ditch short transverse parallel interval between pit enclosure structure (5) and enclose purlin (7), described in enclose purlin along foundation pit enclosure tie
The elongated setting of length direction of structure (5).
10. the assembling construction party of the subway foundation pit assembled horizontal struts system as described in claim 1 to 9 any one
Method, it is characterised in that specifically comprise the following steps that
Step one, is assembled into integrated support unit by horizontal support platform (1), force transferring structure (8)；
Step 2, hangs the support unit assembled to designed elevation 1 position as ground floor support unit；
Step 3, accurately adjusts plan-position and the perpendicularity of ground floor support unit；
Step 4, the jack in jacking force transferring structure (8), make roller tightly push up solid on foundation pit enclosure structure (5)；
Step 5, the excavation ground floor soil body is to designed elevation 2 position；
Step 6, hangs another support unit entirety to designed elevation 1 position as second layer support unit；
Step 7, accurately adjusts second layer support unit plan-position and perpendicularity；
Step 8, the jack in jacking force transferring structure (8), make roller tightly push up solid on foundation pit enclosure structure (5)；
Step 9, shrinks the jack (10) of ground floor support unit force transmission mechanism, utilizes roller along foundation pit enclosure structure (5)
Walk, ground floor support unit is dropped to designed elevation 2 position；
Step 10, the excavation second layer soil body (13)；
Step 11, repetition step 6 to step 10, until completing the earth excavation construction of foundation ditch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610812925.5A CN106193053B (en) | 2016-09-09 | 2016-09-09 | A kind of subway foundation pit assembled horizontal struts system and its assembling constructing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610812925.5A CN106193053B (en) | 2016-09-09 | 2016-09-09 | A kind of subway foundation pit assembled horizontal struts system and its assembling constructing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106193053A true CN106193053A (en) | 2016-12-07 |
| CN106193053B CN106193053B (en) | 2019-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610812925.5A Active CN106193053B (en) | 2016-09-09 | 2016-09-09 | A kind of subway foundation pit assembled horizontal struts system and its assembling constructing method |
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Citations (6)
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|---|---|---|---|---|
| JP2000328572A (en) * | 1999-05-17 | 2000-11-28 | Teito Rapid Transit Authority | Temporary earth retaining timbering method in underground continuous wall |
| CN101294389A (en) * | 2008-02-22 | 2008-10-29 | 中建国际建设有限公司 | Steel shotcrete support internal force self-compensation, displacement control system and control method |
| CN101418572A (en) * | 2008-10-17 | 2009-04-29 | 上海隧道工程股份有限公司 | Pit construction method employing precast support |
| CN201546174U (en) * | 2009-10-27 | 2010-08-11 | 中国第一冶金建设有限责任公司 | Overall floor steel pipe column bracket movement device for bridge side bay closure segment construction |
| CN204475349U (en) * | 2014-12-17 | 2015-07-15 | 厦门科思泰建筑科技有限公司 | Modular support device |
| CN206128079U (en) * | 2016-09-09 | 2017-04-26 | 中建三局集团有限公司 | Subway foundation pit assembled horizontal support system |
-
2016
- 2016-09-09 CN CN201610812925.5A patent/CN106193053B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000328572A (en) * | 1999-05-17 | 2000-11-28 | Teito Rapid Transit Authority | Temporary earth retaining timbering method in underground continuous wall |
| CN101294389A (en) * | 2008-02-22 | 2008-10-29 | 中建国际建设有限公司 | Steel shotcrete support internal force self-compensation, displacement control system and control method |
| CN101418572A (en) * | 2008-10-17 | 2009-04-29 | 上海隧道工程股份有限公司 | Pit construction method employing precast support |
| CN201546174U (en) * | 2009-10-27 | 2010-08-11 | 中国第一冶金建设有限责任公司 | Overall floor steel pipe column bracket movement device for bridge side bay closure segment construction |
| CN204475349U (en) * | 2014-12-17 | 2015-07-15 | 厦门科思泰建筑科技有限公司 | Modular support device |
| CN206128079U (en) * | 2016-09-09 | 2017-04-26 | 中建三局集团有限公司 | Subway foundation pit assembled horizontal support system |
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| Publication number | Publication date |
|---|---|
| CN106193053B (en) | 2019-01-08 |
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