CN105862878B - A kind of support system of deep basal pit - Google Patents
A kind of support system of deep basal pit Download PDFInfo
- Publication number
- CN105862878B CN105862878B CN201610370966.3A CN201610370966A CN105862878B CN 105862878 B CN105862878 B CN 105862878B CN 201610370966 A CN201610370966 A CN 201610370966A CN 105862878 B CN105862878 B CN 105862878B
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- Prior art keywords
- straight beam
- inner support
- concrete inner
- drag
- line
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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
The invention provides the support system in a kind of deep basal pit, including：Support pile, the structure of supporting and retaining system foundation pit side-wall, to bear the lateral thrust of foundation pit side-wall；Guan Liang, it is arranged on the top of the support pile and connects all support piles；Concrete inner support straight beam, connect the corresponding support pile respectively horizontally through both ends；Drag-line, the both ends of the concrete inner support straight beam are separately positioned on, one end of the drag-line is fixed in the Guan Liang, and the other end is fixed with the concrete inner support straight beam, and the drag-line of the same concrete inner support straight beam is symmetrically installed.The present invention can replace the support system of supporting pile+lattice column in existing foundation ditch.The present invention can accomplish easily to construct by the use of drag-line and suspension cable, time saving and energy saving to save money, no seal plate, polluted without waste gas waste water etc., low-carbon environment-friendly, and mechanical property meets the support requirement of foundation ditch, reaches the target for turning into substitute technology in deep basal pit inner support support system.
Description
Technical field
The present invention relates to Geotechnical Engineering field, is used to form using suspension cable and suspension cable in deep basal pit more particularly to one kind
Inner support system.
Background technology
At present for the deep basal pit of excavation, the supporting system of inner support mainly uses the structure of supporting pile+lattice column.Lattice
Post is adding man-hour requirement to be welded with electric welding, and its caused exhaust emission and light pollution are harmful, and support pile driving construction
When, rig can produce exhaust emission when working, and mud used in construction pollutes to Soil Surrounding, and supporting pile sealing
The water-stagnating effect of plate is difficult to ensure that, while when pouring support beam, usually lattice column is also poured full concrete, and band is abolished for the later stage
Carry out unnecessary trouble.
The content of the invention
The invention aims to provide a kind of inner supporting body formed for deep foundation pit support using suspension cable and suspension cable
System.
Especially, the present invention provides the support system in a kind of deep basal pit, including：
Support pile, the structure of supporting and retaining system foundation pit side-wall, to bear the lateral thrust of foundation pit side-wall；
Guan Liang, it is arranged on the top of the support pile and connects all support piles；
Concrete inner support straight beam, connect the corresponding support pile respectively horizontally through both ends；
Drag-line, the both ends of the concrete inner support straight beam being separately positioned on, one end of the drag-line is fixed in the Guan Liang,
The other end is fixed with the concrete inner support straight beam, and the drag-line of the same concrete inner support straight beam is symmetrically installed.
Further, the length of the concrete inner support straight beam is less than 30m.
Further, in the two groups of drag-lines that are provided with of every one end of the concrete inner support straight beam, every group of drag-line is at least by two
Road drag-line is formed, and each drag-line is symmetrically dispersed in two sides of the concrete inner support straight beam and the tie point of the Guan Liang,
The fixing point of each drag-line is symmetrical on the concrete inner support straight beam.
Further, the opening position that the drag-line is fixed in the Guan Liang is provided with protection anchor slab, and the drag-line passes through
Through the Guan Liang through hole and be fixed on using locking piece on the anchor slab；It is provided with the concrete inner support straight beam vertical
The fixing hole of the excessively described concrete inner support straight beam axis of direct puncture, one end of the drag-line are passed through after the fixing hole with being propped up in the concrete
Support straight beam is fixed.
Further, the concrete inner support straight beam is provided with multilayer according to the depth of the foundation ditch, in every layer of the concrete
Support straight beam is connected by the waist rail being arranged on the support pile with the support pile, except the concrete inner support of the bottom is straight
Outside beam, suspension cable is connected at the waist rail at every layer of concrete inner support straight beam both ends, passes through interval positioned at the suspension cable of last layer
The vertical pull bar set is connected with next layer of the concrete inner support straight beam.
Further, the vertical pull bar by the fixing hole that is arranged on the concrete inner support straight beam with being propped up in the concrete
Support straight beam is fixed, and the fixed position of the vertical pull bar is corresponding with the fixing point of the drag-line and the concrete inner support straight beam.
Further, it is provided with the bottom of the concrete inner support straight beam and is easy to the vertical pull bar and the drag-line to fix
Supporting plate.
Further, the length of the concrete inner support straight beam is more than 30m, and an at least lattice is provided with the foundation ditch
Post, the lattice column is located at the middle part of the concrete inner support straight beam, and apical support is in the bottom of the concrete inner support straight beam.
Further, the length of the concrete inner support straight beam is more than 30m, at least provided with a lattice in the foundation ditch
Post, the lattice column are located at the middle part of the concrete inner support straight beam, and the tip height of the lattice column and the position of the Guan Liang
Put correspondingly, the drag-line being connected with the concrete inner support straight beam of the superiors is fixed with the top of the lattice column.
Further, the opening position being connected in the concrete inner support straight beam with the structure lattice column, it is reserved with horizontal run through
Hole, the quantity of the through hole is corresponding with the fixing point quantity of the suspension cable, and the suspension cable has two, and the one of each suspension cable
End is connected with the waist rail, and the other end is separately fixed in the corresponding through hole.
The present invention can replace the support system of supporting pile+lattice column in existing foundation ditch.For different construction spaces
Condition requires with relevant, using simple clear and definite computational methods, you can design the allocation plan of rational drag-line and suspension cable.This
Invention can be accomplished easily to construct by the use of drag-line and suspension cable, time saving and energy saving to save money, no seal plate, the dirt such as no waste gas waste water
Dye, low-carbon environment-friendly, and mechanical property meets the support requirement of foundation ditch, reach turns into replacement in deep basal pit inner support support system
The target of technology.
Brief description of the drawings
Fig. 1 is support system structural representation according to an embodiment of the invention；
Fig. 2 is the fixed structure schematic diagram of drag-line shown in Fig. 1；
Fig. 3 is support system structural representation in accordance with another embodiment of the present invention；
Fig. 4 is support system structural representation in accordance with another embodiment of the present invention；
Fig. 5 is the support system structural representation according to further embodiment of the present invention；
Fig. 6 is the support system structural representation according to another embodiment of the invention；
Fig. 7 is the fixed structure schematic diagram of suspension cable according to an embodiment of the invention.
Embodiment
As shown in figure 1, the support system in the deep basal pit of one embodiment of the invention includes in general manner：Support pile 10,
Guan Liang 20, concrete inner support straight beam 30 and drag-line 40.
The support pile 10 is spaced apart and arranged in around foundation ditch, to bear the lateral thrust of foundation pit side-wall；The Guan Liang 20 is set
At the top of support pile 10 and connect all support piles 10；The concrete inner support straight beam 30 connects pair respectively horizontally through both ends
The support pile 10 answered；The drag-line 40 is pulled by the both ends of concrete inner support straight beam 30 to concrete inner support straight beam 30, specific solid
Determining mode is：One end of drag-line 40 is fixed in Guan Liang 20, and the other end is fixed with concrete inner support straight beam 30, and same concrete inner support
The drag-line fixing point positional symmetry at the both ends of straight beam 30.
In the present embodiment, support pile 10, Guan Liang 20 and concrete inner support straight beam 30 are all routine used by existing foundation ditch
Structure, but the supporting pile and lattice column for supporting said structure in the prior art are eliminated, and instead of its effect with drag-line 40.Rope
Extremely soft, the no anti-bending strength of property, also without compressive property, it can be considered that moment of flexure, pressure and shearing are zero in rope, rope
Section only undertakes a kind of action effect, i.e. axial tension, it is possible to which the performance of material is played extremely.When mounted, it is necessary to
Calculated according to the stress load of each structure in different foundation ditches, the fixing point of drag-line 40 is arranged on concrete inner support straight beam 30
Correct position, overcome the pressure suffered by concrete inner support straight beam 30 with the pulling force of drag-line 40.Drawn used by the present embodiment
Rope 40 is steel strand wires, can replace the support system of supporting pile+lattice column in existing foundation ditch.For different construction space bars
Part requires with relevant, you can designs the rational allocation plan of drag-line 40.The present embodiment can be accomplished by the use of drag-line 40
The pollutions such as easily construction, time saving and energy saving to save money, no seal plate, no waste gas waste water, low-carbon environment-friendly, and mechanical property meets foundation ditch
Support requires, reaches the target for turning into substitute technology in the support supporting construction in deep basal pit.
In the present embodiment, the length of involved concrete inner support straight beam 30 needs to be less than 30M.Under this length, drag-line
40 can not need any auxiliary support structure, you can meet the force request of concrete inner support straight beam 30.
As shown in Fig. 2 further, to improve the pulling force effect of drag-line 40, in one embodiment of the invention, in concrete
Drag-line 40 of the support straight beam 30 per one end can have two groups, and two groups of drag-lines 40 are symmetrically dispersed in concrete inner support straight beam 30 and Guan Liang
Two sides of 20 tie point, concrete inner support straight beam 30 is pulled from both sides in a symmetrical manner, makes concrete inner support straight beam
30 pressure born can preferably be shared.Further, it is same for convenience of being carried out to the plurality of positions of concrete inner support straight beam 30
When pull, every group of drag-line 40 at least can be made up of twice drag-line 40, each drag-line 40 at the same both ends of concrete inner support straight beam 30
Fixing point is symmetrical in the length of concrete inner support straight beam 30.Certainly, in other embodiments, can also exist as needed
The both ends of concrete inner support straight beam 30 set the drag-line 40 of more than two respectively.
As shown in Fig. 2,7, further, to improve the fixing intensity of drag-line 40, in one embodiment of the invention, draw
The fixed structure of rope 40 can be that through hole is set in Guan Liang 20, and the termination of drag-line 40 utilizes locking piece 62 after passing through through hole
Locked.Simultaneously to improve fixed effect, anchor slab 21 is installed in one end that pulling force can be born in through hole, and anchor slab 21 can carry
The bearing strength of high drag-line 40.
As shown in figure 1, for some deep foundation ditches, in one embodiment of the invention, the concrete inner support straight beam 30 can
With the setting multilayer according to the depth of foundation ditch from top to bottom, the concrete inner support straight beam 30 of each layer is by being arranged on support pile 10
Waist rail 50 is connected with support pile 10, and waist rail 50 is arranged on the inner surface of support pile 10, and the mode vertical with support pile 10 is distinguished
Connect all support piles 10.In addition to the concrete inner support straight beam 30 of the bottom, every layer of same both ends of concrete inner support straight beam 30 it
Between be connected with a pair of suspension cables 60, two suspension cables 60 be separately positioned on concrete inner support straight beam 30 axially two then.The termination of suspension cable 60
It can be fixed on by the way of winding at the waist rail 50 of the contact of concrete inner support straight beam 30, then be locked its termination using locking piece
It is fixed.In addition it is also possible to set through hole on waist rail 50, one end of suspension cable 60 is set to be carried out after passing through the through hole using locking piece
Locking.Every suspension cable 60 positioned at last layer is straight by vertical and spaced vertical pull bar 61 and next layer of concrete inner support
Beam 30 connects.The concrete inner support straight beam 30 at this is held respectively in the lower end of the vertical pull bar 61 of two of same position.Suspension cable 60 can
To apply a upward pulling force to support beam 30 to the concrete of connection by vertical pull bar 61, to overcome the concrete inner support straight beam 30
Shearing.The quantity of vertical pull bar 61 and position can determine according to the shearing size that the concrete inner support straight beam 30 is subject to.
The vertical pull bar 61 can by being arranged on concrete inner support straight beam 30 and perpendicular to the fixing hole 31 of its axis, with
Concrete inner support straight beam 30 connects, and the fixed position of vertical pull bar 61 can be with drag-line 40 and the fixing point of concrete inner support straight beam 30
Position correspondence.Further, it can be set in the bottom of concrete inner support straight beam 30 and be easy to what vertical pull bar 61 and drag-line 40 were fixed
Supporting plate 32.Supporting plate 32 can disperse the pulling force of vertical pull bar 61.
As shown in figure 3, further, in one embodiment of the invention, when the length of concrete inner support straight beam 30 is more than
During 30m, an at least lattice column 70 can be set in foundation ditch, the lattice column 70 is located at the middle part of concrete inner support straight beam 30, and
Apical support is in the bottom of concrete inner support straight beam 30.Pulling force of the drag-line 40 to Guan Liang 20 can be reduced by said structure, simultaneously
Improve the drag of concrete inner support straight beam 30.Specifically, two can be set according to the length and stressing conditions of concrete inner support straight beam 30
The lattice column 70 of root or more.
As shown in figure 4, further, in another embodiment of the present invention, when the length of concrete inner support straight beam 30 is big
When 30m, an at least lattice column 70 can be set in foundation ditch, the lattice column 70 is located at the middle part of concrete inner support straight beam 30,
And the tip height of lattice column 70 and the position correspondence of Guan Liang 20, it is fixed with the concrete with the superiors and props up on the top of lattice column 70
Support the drag-line 40 that straight beam 30 connects.The general concrete inner support straight beam 30 on upper strata and the difference in height of Guan Liang 20 are at 2 meters or so, its stress
It is smaller, thus can be only with drag-line 40 to overcome it to be subject to shearing force., can be simultaneously when concrete inner support straight beam 30 is longer
With the top impetus of lattice column 70, to be pulled by drag-line 40 to the concrete inner support straight beam 30 of top layer.At this point it is possible to increase
Add the quantity of drag-line 40, one end of newly-increased drag-line 40 is fixed on to the top of the lattice column 70, and the other end and concrete of drag-line 40
Inner support straight beam 30 is fixed.In the present embodiment, fixed form and foregoing fixation of the drag-line 40 with concrete inner support straight beam 30
Mode is identical, and the set-up mode of drag-line 40 and quantity can also be identical with the arrangement of previous embodiment, as long as needing basis
The stressing conditions of concrete inner support straight beam 30, the fixing point of reasonable distribution drag-line 40.
As shown in figure 5, further, on the basis of previous embodiment, when the length of concrete inner support straight beam 30 is more than 30M
When, lattice column 70 is also used as the fixing point of suspension cable 60.Concrete mode is：It is connected in concrete inner support straight beam 30 with structure lattice column 60
Opening position, be reserved with horizontal through hole 33, the quantity of through hole 33 is corresponding with the fixing point quantity of suspension cable 60, and suspension cable 60 has
Two, and one end of each suspension cable 60 is connected with waist rail 50, the other end is separately fixed in corresponding through hole 33.
In the present embodiment, because the length of concrete inner support straight beam 30 is larger, can not have been met using single suspension cable 60
The shearing requirement of concrete inner support straight beam 30, therefore can be in units of lattice column 70, using the structure of two suspension cables 60, respectively to quilt
Suspended in midair the separated part of concrete inner support straight beam 30 of lattice column 60.Now, the through hole that each suspension cable 60 is connected with lattice column 70
33 can be independent.Preferably, two suspension cables 60 can be by the way of staggeredly respectively with being fixed away from oneself through hole 33 at end.
, can be with when the length of concrete inner support straight beam 30 is more than 30m as shown in fig. 6, on the basis of previous embodiment
The structure coordinated simultaneously using suspension cable 60 and drag-line 40, now, lattice column 70 is simultaneously as drag-line 40 and the impetus of suspension cable 60.
The setting of the present embodiment centre suspension cord 60 and drag-line 40 and fixed form are all consistent with preceding embodiment.
So far, although those skilled in the art will appreciate that detailed herein have shown and described multiple showing for the present invention
Example property embodiment, still, still can be direct according to present disclosure without departing from the spirit and scope of the present invention
It is determined that or derive many other variations or modifications for meeting the principle of the invention.Therefore, the scope of the present invention is understood that and recognized
It is set to and covers other all these variations or modifications.
Claims (5)
- A kind of 1. support system in deep basal pit, it is characterised in that including：Support pile, the structure of supporting and retaining system foundation pit side-wall, to bear the lateral thrust of foundation pit side-wall；Guan Liang, it is arranged on the top of the support pile and connects all support piles；Concrete inner support straight beam, connect the corresponding support pile respectively horizontally through both ends；Drag-line, the both ends of the concrete inner support straight beam are separately positioned on, one end of the drag-line is fixed in the Guan Liang, another End is fixed with the concrete inner support straight beam, and the drag-line of the same concrete inner support straight beam is symmetrically installed；The length of the concrete inner support straight beam is less than 30m, and every one end of the concrete inner support straight beam is provided with two groups of drag-lines, Every group of drag-line is at least made up of twice drag-line, and each drag-line is symmetrically dispersed in the concrete inner support straight beam and the Guan Liang Two sides of tie point, the fixing point of each drag-line is symmetrical on the concrete inner support straight beam, and the concrete inner support is straight Beam is provided with multilayer according to the depth of the foundation ditch, and every layer of the concrete inner support straight beam is by being arranged on the support pile Waist rail is connected with the support pile, in addition to the concrete inner support straight beam of the bottom, every layer of concrete inner support straight beam both ends Suspension cable is connected at waist rail, the suspension cable positioned at last layer passes through in the concrete of the spaced vertical pull bar with next layer Straight beam connection is supported, the length of the concrete inner support straight beam is more than 30m, an at least lattice column is provided with the foundation ditch, The lattice column is located at the middle part of the concrete inner support straight beam, and apical support is in the bottom of the concrete inner support straight beam, described The length of concrete inner support straight beam is more than 30m, and at least provided with a lattice column in the foundation ditch, the lattice column is positioned at described The middle part of concrete inner support straight beam, and the tip height of the lattice column and the position correspondence of the Guan Liang, in the lattice column Top is fixed with the drag-line being connected with the concrete inner support straight beam of the superiors.
- 2. support system according to claim 1, it is characterised in thatThe opening position that the drag-line is fixed in the Guan Liang is provided with protection anchor slab, and the drag-line passes through through the Guan Liang Through hole is simultaneously fixed on the anchor slab using locking piece；It is provided with and is passed perpendicularly through in the concrete on the concrete inner support straight beam The fixing hole of straight beam axis, one end of the drag-line is supported to be fixed after passing through the fixing hole with the concrete inner support straight beam.
- 3. support system according to claim 1, it is characterised in thatThe vertical pull bar is fixed by the fixing hole being arranged on the concrete inner support straight beam with the concrete inner support straight beam, institute The fixed position for stating vertical pull bar is corresponding with the fixing point of the drag-line and the concrete inner support straight beam.
- 4. support system according to claim 1, it is characterised in thatThe supporting plate for being easy to the vertical pull bar and the drag-line to fix is provided with the bottom of the concrete inner support straight beam.
- 5. support system according to claim 1, it is characterised in thatIn the opening position that the concrete inner support straight beam is connected with the lattice column, horizontal through hole, the through hole are reserved with Quantity it is corresponding with the fixing point quantity of the suspension cable, the suspension cable has two, and one end of each suspension cable and the waist rail Connection, the other end are separately fixed in the corresponding through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610370966.3A CN105862878B (en) | 2016-05-30 | 2016-05-30 | A kind of support system of deep basal pit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610370966.3A CN105862878B (en) | 2016-05-30 | 2016-05-30 | A kind of support system of deep basal pit |
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| CN105862878A CN105862878A (en) | 2016-08-17 |
| CN105862878B true CN105862878B (en) | 2018-01-09 |
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| CN107227741B (en) * | 2017-07-30 | 2018-12-14 | 叶长青 | Basement supporting construction |
| CN107246016B (en) * | 2017-08-01 | 2023-02-28 | 中铁第四勘察设计院集团有限公司 | Hanging type inner support system suitable for foundation pit engineering and foundation pit construction method |
| CN107354946A (en) * | 2017-08-16 | 2017-11-17 | 中铁第四勘察设计院集团有限公司 | A kind of supporting construction of encorbelmenting for foundation pit steel support |
| CN107338799B (en) * | 2017-09-15 | 2018-12-14 | 叶长青 | Large span foundation pit supporting construction |
| CN108316315B (en) * | 2018-03-29 | 2023-03-31 | 中铁第四勘察设计院集团有限公司 | Vertical stable structure suitable for foundation ditch exempts from to establish post stake |
| CN108824448A (en) * | 2018-07-20 | 2018-11-16 | 四川锦城智信建设工程有限公司 | A kind of support system of deep basal pit |
| CN109113070B (en) * | 2018-08-24 | 2020-04-28 | 洛阳理工学院 | Building foundation pit internal and external support structure and construction method |
| CN110397042A (en) * | 2019-07-13 | 2019-11-01 | 济邦建设集团有限公司 | A kind of support system of deep basal pit |
| CN112575789A (en) * | 2020-11-30 | 2021-03-30 | 广西大学 | Diagonal space truss foundation pit inner support system |
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