CN207376629U - A kind of Fabricated Structure for Support of Excavation using slip casting bolt - Google Patents
A kind of Fabricated Structure for Support of Excavation using slip casting bolt Download PDFInfo
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- CN207376629U CN207376629U CN201721054495.1U CN201721054495U CN207376629U CN 207376629 U CN207376629 U CN 207376629U CN 201721054495 U CN201721054495 U CN 201721054495U CN 207376629 U CN207376629 U CN 207376629U
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Abstract
The utility model is related to a kind of Fabricated Structure for Support of Excavation using slip casting bolt, including box-type member standard component, it is characterized in that, box-type member standard component is reserved with slip casting threaded screw fasteners hole when prefabricated, standard component is connected by slip casting bolt by the bolt hole with the soil body, when the supporting wall that box-type member is formed has lateral displacement trend, slip casting bolt can provide pulling force to it, and hollow rectangle steel pipe inner support is set, steel pipe inner support is connected using having bolt hole with box-type member, the supporting wall that box-type member standard component is formed is provided horizontally-supported, it is consequently formed the pattern foundation pit supporting structure form of slip casting bolt and steel pipe inner support independent assortment.Slip casting bolt is pin-connected panel, is fixedly connected sequentially and is formed by screw cap end, one or more standard paragraphs screw rod and bolt tip；By the length of the entire slip casting bolt of how much changes of standard paragraphs screw rod quantity, standard paragraphs shank of bolt is elongated hollow, along axis injected hole is set to be equipped with injected hole.
Description
Technical field
The utility model belongs to Base hole supporting technology field, is related to a kind of fast standard assembled using slip casting bolt
Foundation pit supporting construction.
Background technology
Since the 21th century, people’s lives level is greatly improved, and economic development is rapid, scientific and technological progress effect
It is clear that the paces of urban construction are also being accelerated.Therefore, in recent years, the exploration project of skyscraper and the underground space
More and more, this is but also the quantity of base pit engineering and its depth are increasing day by day.And since base pit engineering has excavation
The problems such as time is long, technology requirement is high, difficulty of construction is big and construction condition is poor exists, and can all there be foundation pit work in China every year
Journey accident occurs, this brings immeasurable loss to the development of national economy and national society.In consideration of it, for foundation pit
The scheme of support engineering optimized preferably and to scheme with more profound significance.
Pattern foundation pit supporting structure is a kind of construction interim measure for stablizing foundation pit, since excavation of foundation pit is to the soil body of original stress equilibrium
It is disturbed, the effect of foundation pit supporting construction is mainly subject to generated soil pressure and underground water after excavation
Pressure is reinforced, is closed, is isolated, supported and protected to foundation pit top, side wall and surrounding enviroment, and this pressure transmission is arrived
Supporting construction ensures the safety of underground construction and surrounding enviroment with this.
Foundation pit supporting construction pattern can be divided mainly into soil nail wall, gravity type cement soil wall, slope and supporting and retaining system formula structure etc..Branch
Gear formula structure be divided into for：Anchor pulling structure, brace type structure, cantilever structure etc..At present, these traditional pattern foundation pit supporting structure forms
Come with some shortcomings part.Wherein, non-support or simple mask are the most economical, but it is openr and all to be only limitted to excavation place
Condition of the side without building to be protected and underground utilities.Anchor formula and brace type structure is drawn to be suitable for deep-foundation pit engineering.Cantilever
Stake building-in depth needs 1 times to 2 times that reaches cantilever height, since cantilever pile bears larger moment of flexure, has larger side
To displacement, so be only applicable to shallower foundation pit, when use, must take into consideration sensitivity of the foundation pit surrounding enviroment to foundation pit displacement.Ground
Though continuous wall construction rigidity is big down, displacement is small, water-resisting property is good, its cost is high, especially in the design not diaphram wall
When being classified as agent structure needs to remove, the difficulty of construction of engineering is increased, affects the economic benefit of engineering.
Fabricated Structure for Support of Excavation is typically formed by prefabricated box component assembly, can overcome some above-mentioned skills
The defects of in art, flexible combination quick assembling is dismantled at the construction field (site), but Fabricated Structure for Support of Excavation has the soil with surrounding
Body connectivity is poor, the phenomenon that being easy to occur collapsing and topple.Supporting wall generation lateral displacement generation in order to prevent is toppled and is fallen
It collapses, it is necessary to supporting wall and surrounding soil are effectively connected, the soil body is made to generate constraint to wall or be set in foundation pit
Inner support, so as to form the whole foundation pit supporting construction with overall stability.
Utility model content
The utility model provides a kind of fast standard Fabricated Structure for Support of Excavation dismountable at the construction field (site), can be bright
The flexibility of aobvious enhancing construction accelerates speed of application, improves construction quality, reduces pattern foundation pit supporting structure cost.In order to achieve the above objectives,
The technical solution adopted in the utility model is：
A kind of Fabricated Structure for Support of Excavation using slip casting bolt, including box-type member standard component, which is characterized in that pre-
Box-type member standard component is reserved with slip casting threaded screw fasteners hole when processed, and slip casting bolt is by the bolt hole by standard component and the soil body
It is connected, when the supporting wall that box-type member is formed has lateral displacement trend, slip casting bolt can provide it pulling force, and set
Hollow rectangular steel pipe inner support is put, steel pipe inner support is connected with box-type member using having bolt hole, box-type member standard component is formed
Supporting wall provide it is horizontally-supported, be consequently formed slip casting bolt and steel pipe inner support independent assortment pattern foundation pit supporting structure form；
The slip casting bolt is pin-connected panel, is connected by screw cap end, one or more standard paragraphs screw rod and bolt tip are fixed successively
Connect composition；Screw cap end is the component being connected with box-type member standard component；Bolt tip, slip casting bolt to be facilitated to squeeze into the soil body；
By the length of the entire slip casting bolt of how much changes of standard paragraphs screw rod quantity, standard paragraphs shank of bolt is elongated hollow and equipped with note
Starch hole；
The hollow rectangle steel pipe inner support is provided with bolt hole, by box-type member standard component and box-type member standard component it
Between link bolt hole be connected with box-type member, hollow rectangle steel inner support is for bearing the side pressure that soil at both sides is transmitted to supporting wall
Power.
Injected hole on standard paragraphs screw rod or for common injected hole or be hangnail type injected hole.The distribution of injected hole can be
It is in staggered distribution.
Compared with the prior art, the beneficial effects of the utility model are embodied in：
1. slip casting bolt can flexibly be freely combined as needed；
2. assembling work is efficient, installation is quick, and site operation operability is good；
3. the recyclable recycling of most of components, good in economic efficiency；
4. hollow rectangle steel pipe can effectively save inner support weight, being bolted makes it easy to connect with supporting wall；
5. component can be produced in factory normalization, can effectively save engineering material and engineering time, improve construction quality,
Reduce pattern foundation pit supporting structure cost；
6. can effectively improve box-type member into pattern foundation pit supporting structure wall reliability.
Description of the drawings
Fig. 1 is the utility model assembled slip casting bolt nut section B schematic diagrames；
Fig. 2 is the utility model assembled slip casting bolt standard paragraphs screw rod D1 type schematic diagrames；
Fig. 3 is the utility model assembled slip casting bolt standard paragraphs screw rod D2 type schematic diagrames；
Fig. 4 is the utility model assembled slip casting bolt standard paragraphs screw rod D3 type schematic diagrames；
Fig. 5 is the utility model assembled slip casting bolt standard paragraphs screw rod D4 type schematic diagrames；
Fig. 6 is the utility model assembled slip casting bolt tip E schematic diagrames；
Fig. 7 is schematic diagram before the assembling of the utility model assembled slip casting bolt D1 types；
Fig. 8 is schematic diagram after the assembling of the utility model assembled slip casting bolt D1 types；
Fig. 9 is schematic diagram after the assembling of the utility model assembled slip casting bolt D3 types；
Figure 10 is using slip casting bolt and hollow rectangle steel inner support assembled pattern foundation pit supporting structure design sketch；
Figure 11 is using slip casting bolt and hollow rectangle steel inner support assembled pattern foundation pit supporting structure design sketch；
Figure 12 (a) and (b) are respectively the front view and stereogram of pattern foundation pit supporting structure calibrated bolck A1 type components；
Figure 13 (a) and (b) are respectively the front view and stereogram of pattern foundation pit supporting structure calibrated bolck A2 type components；
Figure 14 (a) and (b) are respectively the front view and stereogram of pattern foundation pit supporting structure calibrated bolck A3 type components；
Figure 15 is A1 types calibrated bolck and A2 type calibrated bolck staggered joint erection supporting construction slip casting bolt layout viewings；
Figure 16 is Figure 15 staggered joint erection supporting construction sectional views；
Figure 17 is A3 type calibrated bolck staggered joint erection supporting construction slip casting bolt layout viewings；
Figure 18 is A1 types calibrated bolck and A3 type calibrated bolck staggered joint erection supporting construction slip casting bolt layout viewings；；
Figure 19 uses foundation pit sectional view for hollow rectangle steel inner support and slip casting bolt combination；
Figure 20 is rectangle hollow steel inner support schematic diagram；
Figure 21 connects arrangement schematic diagram for steel inner support by crisscross single Lengthened bolt；
Figure 22 connects pattern foundation pit supporting structure sectional view for steel inner support by crisscross single Lengthened bolt；
Figure 23 connects arrangement schematic diagram for steel inner support by parallelly-arranged double-row Lengthened bolt；
Figure 24 connects pattern foundation pit supporting structure sectional view for steel inner support by parallelly-arranged double-row Lengthened bolt；
Figure 25 is generic connectivity bolt schematic diagram；
Figure 26 connects bolt schematic diagram to lengthen.
Include in Fig. 1~26：
The common injected holes of 1-
2- hangnail type injected holes
3- slip casting bolts hole
4- link bolt hole
5- slip casting bolts
6- generic connectivity bolts
7- foundation pit supporting construction standard films A1
8- foundation pit supporting construction standard films A2
9- foundation pit supporting construction standard films A3
10- lengthens connection bolt
11- hollow rectangle steel inner supports
Specific embodiment
The utility model is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with this practicality
Implemented premised on new technique, give detailed embodiment and specific operating process, but the guarantor of the utility model
Shield scope is not limited to following embodiments.
In conjunction with above-mentioned each attached drawing example, the utility model is expanded on further.
The utility model core component is assembled slip casting bolt, forms component such as Fig. 1-Fig. 6 of assembled slip casting bolt
It is shown, it is respectively the nut section B of assembled slip casting bolt, four kinds of standard paragraphs screw rod D1 types, D2 types, D3 types and D4 types and note
Starch bolt tip E.Assembled slip casting bolt various pieces are that steel is prefabricated in processing space.
Fig. 1 is the nut section B of slip casting bolt, and major diameter threaded end is reserved by screw thread and foundation pit supporting construction standard film
Bolt hole tightens fixation, and smaller diameter end is connected by screw thread with standard paragraphs screw rod D, and screw thread is arranged on outside by necking.Spiral shell
Cap section is elongated hollow for later stage slip casting, and inflated diameter 60mm, nut section is not provided with injected hole along axis, the later stage is facilitated to tear open
It removes.
Fig. 2-Fig. 5 is four kinds of standard paragraphs screw rod D1-D4, and 1 is common injected hole in figure, and 2 be hangnail type injected hole, together
Sample, screw rod set injected hole also to be elongated hollow, along axis, and injecting paste material flows into the soil body in cored screw by injected hole
In.When using common injected hole 1, whether standard paragraphs screw rod is to be in staggered distribution to be divided into D1 types and D2 types by the distribution of injected hole,
When using hangnail type injected hole 2, whether standard paragraphs screw rod is to be in staggered distribution to be divided into D3 types and D4 types by the distribution of injected hole, is fallen
Thorn type injected hole can provide the restraining force of bigger when the soil body and slip casting bolt have opposite changing of the relative positions trend, therefore supporting effect is more
Good, the injected hole that is in staggered distribution can make slurries be more evenly distributed in the soil body, therefore supporting effect also can be more preferable, but hangnail type
Injected hole and the injected hole manufacture craft that is in staggered distribution are slightly complicated.Can different standards be selected according to soil property situation and economy
Section screw rod, selects D1 types when soil property is preferable, D4 types are selected when soil property is poor.In prefabricated supporting construction standard film and slip casting bolt
During various pieces, it should be noted that the diameter of bolt hole in nut section B large-diameter threads end and standard film center is greater than hangnail type slip casting
Diameter at the spiro rod section hangnail of hole ensures that hangnail type injected hole spiro rod section can enter from bolt hole, nut section B major diameters in this example
The end of thread and the diameter of bolt hole in standard film center are 110mm, a diameter of 105mm at hangnail.Standard paragraphs screw rod D threaded one ends exist
Inside, another section on the outside, is conveniently connected, each type screw diameter and inflated diameter all same, be respectively 80mm and
60mm。
Fig. 6 is slip casting bolt tip, and tip setting facilitates slip casting bolt to enter the soil body, and screw thread is arranged on inside, with standard
Section screw rod D connections.
Installation is complete and passes through after calibrated bolck bolt hole enters the soil body for entire slip casting bolt, and mortar is pressed into it at nut.
When squeezing into slip casting bolt into the soil body, Luoyang Spade pore-forming can be first used, slip casting bolt is facilitated to install.
When using two sections of shank of bolt D, assembled slip casting bolts assemblies are front and rear as shown in Fig. 7-Fig. 9.Fig. 7 is not assembled
When nut section B, 2 standard paragraphs screw rod D1 and slip casting bolt tip, Fig. 8 be the part of Fig. 7 tetra- carry out it is assembled after the completion of it is whole
A D1 types slip casting bolt.Fig. 9 is entire D3 type slip casting bolts after assembling.
Slip casting bolt various pieces are prefabricated in the factory, suitable length, convenience in transport, and scene can flexibly be selected not as needed
Assembled use is carried out with quantity and different types of standard paragraphs screw rod D, slip casting bolt length is controlled by changing standard paragraphs screw rod
And slip casting effect, even if soil property is different at left and right sides of foundation pit, it can also easily be combined and reach economic and good supporting
Effect.
The utility model proposes slip casting bolt be mainly used for the use of foundation pit supporting construction standard film, for slip casting bolt
Use, the utility model proposes a kind of foundation pits for strengthening pattern foundation pit supporting structure effect using slip casting bolt and hollow rectangle steel inner support
Support form, as shown in Figure 10 and Figure 11, primary structure is assembled pattern foundation pit supporting structure knot to assembled pattern foundation pit supporting structure design sketch in figure
Structure standard film, steel inner support and slip casting bolt.
Present case carries out the explanation of slip casting bolt for three kinds of standard films.Figure 12 (a) and (b) are respectively pattern foundation pit supporting structure
The front view and stereogram of calibrated bolck A1 type components, size are 1m × 1m.Figure 13 (a) and (b) are respectively pattern foundation pit supporting structure calibrated bolck
The front view and stereogram of A2 type components, size are 1m × 0.5m.Figure 14 (a) and (b) are respectively pattern foundation pit supporting structure calibrated bolck A3 types
The front view and stereogram of component, size are 1m × 2m.Each type reserves slip casting threaded screw fasteners hole 3 and connection spiral shell when prefabricated
Bolt bolt hole 4, as shown in Figure 12-Figure 14, one slip casting spiro keyhole position of A1 types is in calibrated bolck center, two slip casting bolts of A3 types
Hole is located at calibrated bolck short side center line and long side quarterline point of intersection.
When the braced wall to form different arrangements is bolted using A1 types calibrated bolck and A2 type calibrated bolck staggered joint erections
Then body structure carries out pattern foundation pit supporting structure, when standard film is all booked slip casting bolt, slip casting bolt combination shape using slip casting bolt
Formula is as shown in figure 15, and sectional view is as shown in figure 16.Schematic diagram is as shown in figure 17 when using A3 type calibrated bolck staggered joint erections, when adopting
It is as shown in figure 18 with schematic diagram when A1 types calibrated bolck and A3 type calibrated bolck staggered joint erections.Wherein, 5 be slip casting bolt, and 6 be common
Bolt is connected, 7 be A1 type calibrated bolcks, and 8 be A2 type calibrated bolcks, and 9 be A3 type calibrated bolcks.
As can be seen that when standard film is all booked slip casting bolt, no matter pattern foundation pit supporting structure is using which kind of assembly form, slip casting
Bolt can be distributed in standard film and combine in the pattern foundation pit supporting structure wall to be formed well.It, can meanwhile if soil condition is preferable
With the slip casting bolt of only arranging to a part of standard film of selectivity, there is economic well imitate on the premise of construction safety is ensured
Fruit.It can thus be seen that the utility model slip casting bolt has high flexibility, practicability and economy.
Bolt and standard film connection reinforcement foundation pit branch are utilized using hollow steel inner support the utility model proposes a kind of simultaneously
The pattern foundation pit supporting structure form of effect is protected, sectional view is as shown in figure 19, wherein 10 connect bolt to lengthen, 11 is in hollow rectangle steel
Support.Hollow rectangle steel inner support 11 has certain thickness, and the rigidity and intensity of itself when can keep being pressurized, bolt is left in one end
Hole, as shown in figure 20, hollow rectangle steel inner support can need to be designed to assembly form according to length and transport, and centre passes through flange
Disk connects, and only both ends is needed to have bolt hole.Hollow rectangle steel inner support 11 can directly utilize lengthening connection bolt 10 and standard film
It is connected, connection mode can be divided into two kinds, and one kind is using crisscross single Lengthened bolt connection, and schematic diagram and sectional view are such as
Shown in Figure 21 and Figure 22.One kind is that Lengthened bolt connects side by side using parallelly-arranged double-row, schematic diagram and sectional view such as Figure 23 and Figure 24
It is shown.Wherein, 6 be generic connectivity bolt, and 10 is lengthen connection bolt, and 11 be hollow rectangle steel inner support.
Because hollow rectangle steel inner support belongs to active force, the pressure that soil at both sides is transmitted to wall is born, can be considered axle center
Compression member since axle power by steel inner support both ends is transferred to both sides standard film, lengthens connection bolt 10 and is not subject to shear, only rise
Connection function.Hollow rectangle steel inner support both ends are that have certain thickness steel plate, can be evenly distributed with axle power and be transferred to both sides standard
On piece, and be unlikely to make standard film compression excessive, hollow design can reduce dead weight, saving steel, and can recycle
It utilizes.
Figure 25 and Figure 26 is the bolt connection piece that the utility model is related to arrive, and is respectively generic connectivity bolt and lengthens connection
Bolt, Bolt sizes are chosen according to thickness of reference block, the long 450mm of present case generic connectivity bolt, and it is long to lengthen connection bolt
650mm, practical engineering can flexibly change size according to actual conditions.
The utility model proposes detachable foundation pit assembled supporting construction calibrated bolck, steel inner support and slip casting bolt nut section
The equal recoverables of B, such as during subway work, the component that leading portion construction finishes dismounting is constructed available for back segment, economical
It is convenient.And all components can factory normalization production, scene independent assortment is assembled, can improve construction quality, and have
There is high flexibility.
The utility model proposes detachable foundation pit assembled supporting construction removed when, it then follows first remove steel inner support,
Then slip casting bolt nut section B is removed, one layer of standard pad configurations is then removed, backfills one layer of soil afterwards, from bottom to top removed
And backfill, it can so ensure the stabilization of foundation pit supporting construction and the soil body, and then ensure the security of work progress.
Claims (3)
1. a kind of Fabricated Structure for Support of Excavation using slip casting bolt, including box-type member standard component, which is characterized in that prefabricated
When box-type member standard component be reserved with slip casting threaded screw fasteners hole, slip casting bolt is by the bolt hole by standard component and soil body phase
Even, slip casting bolt can provide it pulling force when the supporting wall formed in box-type member has lateral displacement trend, and set
Hollow rectangle steel pipe inner support, steel pipe inner support are connected with box-type member using having bolt hole, box-type member standard component are formed
The offer of supporting wall is horizontally-supported, is consequently formed the pattern foundation pit supporting structure form of slip casting bolt and steel pipe inner support independent assortment；
The slip casting bolt is pin-connected panel, is fixedly connected sequentially group by screw cap end, one or more standard paragraphs screw rod and bolt tip
Into；Screw cap end is the component being connected with box-type member standard component；Bolt tip, slip casting bolt to be facilitated to squeeze into the soil body；Pass through
The length of the entire slip casting bolt of how much changes of standard paragraphs screw rod quantity, standard paragraphs shank of bolt are elongated hollow and equipped with slip castings
Hole；
The hollow rectangle steel pipe inner support is provided with bolt hole, by between box-type member standard component and box-type member standard component
Link bolt hole is connected with box-type member, and hollow rectangle steel inner support is used to bear the lateral pressure that soil at both sides is transmitted to supporting wall.
2. Fabricated Structure for Support of Excavation according to claim 1, which is characterized in that injected hole on standard paragraphs screw rod or
For common injected hole or it is hangnail type injected hole.
3. Fabricated Structure for Support of Excavation according to claim 1, which is characterized in that the injected hole on standard paragraphs shank of bolt
It is distributed or is in staggered distribution along axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721054495.1U CN207376629U (en) | 2017-08-22 | 2017-08-22 | A kind of Fabricated Structure for Support of Excavation using slip casting bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721054495.1U CN207376629U (en) | 2017-08-22 | 2017-08-22 | A kind of Fabricated Structure for Support of Excavation using slip casting bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207376629U true CN207376629U (en) | 2018-05-18 |
Family
ID=62342898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721054495.1U Active CN207376629U (en) | 2017-08-22 | 2017-08-22 | A kind of Fabricated Structure for Support of Excavation using slip casting bolt |
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| Country | Link |
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| CN (1) | CN207376629U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107642096A (en) * | 2017-08-22 | 2018-01-30 | 天津大学 | A kind of Fabricated Structure for Support of Excavation using slip casting bolt |
| CN111254944A (en) * | 2020-04-13 | 2020-06-09 | 北京中岩大地科技股份有限公司 | Square tube steel support for foundation pit support and connecting piece thereof |
-
2017
- 2017-08-22 CN CN201721054495.1U patent/CN207376629U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107642096A (en) * | 2017-08-22 | 2018-01-30 | 天津大学 | A kind of Fabricated Structure for Support of Excavation using slip casting bolt |
| CN111254944A (en) * | 2020-04-13 | 2020-06-09 | 北京中岩大地科技股份有限公司 | Square tube steel support for foundation pit support and connecting piece thereof |
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