CN206512759U - A kind of ground-connecting-wall G type joints of pre-buried repeatable Grouting Pipe - Google Patents
A kind of ground-connecting-wall G type joints of pre-buried repeatable Grouting Pipe Download PDFInfo
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- CN206512759U CN206512759U CN201720107981.9U CN201720107981U CN206512759U CN 206512759 U CN206512759 U CN 206512759U CN 201720107981 U CN201720107981 U CN 201720107981U CN 206512759 U CN206512759 U CN 206512759U
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Abstract
The utility model discloses a kind of ground-connecting-wall G type joints of pre-buried repeatable Grouting Pipe, it is characterised in that：It includes a cross steel plate of phase groove (1) and the second stage of U-shaped steel plate of groove (2), and a described cross steel plate of phase groove (1) and the second stage of U-shaped steel plate of groove (2) are pre-installed in steel reinforcement cage (3) and between two adjacent concrete connect wall；It is provided between a described cross steel plate of phase groove (1) and the second stage of U-shaped steel plate of groove (2) on concrete and is provided with sealing steel plate (6)；Changeover portion between described flange plate (2.1) and described U-shaped steel plate (2.2) is provided with Grouting Pipe (7)；It is overcome in the prior art using the serious shortcoming of ground-connecting-wall seam percolating water, and good with water-stagnating effect, engineering cost is few, and construction quality is easy to check and judged, the simple advantage of construction technology.
Description
Technical field
The utility model is related to subway engineering, construction engineering technical field, and being more specifically that one kind is pre-buried weighs
The ground-connecting-wall G type joints of multiple Grouting Pipe.
Background technology
With underground engineering fast development, turn into various complicated geologicals with design and construction ultra-deep foundation pit under environmental condition
New normality.Diaphram wall is with the outstanding feature that its rigidity is big, good water-proof effect, construction technology are ripe, difficulty of construction is small, gradually
Preferred structural shape as Extra-Deep Foundation Pit scheme under complex geological condition.
What Deep Foundation Pit of Metro Stations ground-connecting-wall joint seal was more common at present is I-shaped steel joint, and minority uses cross steel plate
Joint geometry.
When excavating ultra-deep foundation pit process in high pressure-bearing aquifer water-bearing stratum, often occur ground-connecting-wall seam Sand dangerous situation,
Strong influence is produced to engineering construction and surrounding enviroment, often economic loss and social influence are huge.Such as, in the Wuhan mayor
River I grades of terrace regional Construction F3/B3 subway station (foundation depth is generally 24~30m), due to ground-connecting-wall seam construction matter
Amount is poor, leak sand leakage easily occurs under high artesian head, dangerous situation happens occasionally, and the considerable safety as puzzlement subway construction is asked
Topic.
In order to strengthen ground-connecting-wall joint seal effect, increase high-pressure rotary jet grouting pile at ground-connecting-wall outer side seam is typically taken to stop
Water, or continuous water-stop curtain (such as three axes agitating pile, plain ground-connecting-wall) is set, considerably increase construction investment.But due to working as
The limitation of preceding construction technology and construction level, the following high-pressure rotary jet grouting piles of ground 20m or three axes agitating pile construction quality are difficult to protect
Barrier, ground-connecting-wall seam leakage problem can not be solved well, though anti-seepage effect is preferable when using plain ground-connecting-wall, engineering
Investment cost is high.
The content of the invention
The purpose of this utility model is the weak point for overcoming above-mentioned background technology, and proposes a kind of pre-buried repeatable note
Starch the ground-connecting-wall G type joints of pipe.
The purpose of this utility model technical scheme is implemented by following measure：A kind of ground of pre-buried repeatable Grouting Pipe connects
Wall G type joints, it includes a cross steel plate of phase groove and the U-shaped steel plate of the second stage of groove, a described cross steel plate of phase groove and second phase
The U-shaped steel plate of groove is pre-installed in steel reinforcement cage and between two adjacent concrete connect wall；In a described phase groove ten
Excavation side seal steel plate between font steel plate and the U-shaped steel plate of the second stage of groove；Described the second stage of groove U steel plates are located at a described phase groove
The side of cross steel plate, a described cross steel plate of phase groove includes horizontal steel plate and vertical steel plate, and described the second stage of groove is U-shaped
Steel plate includes the flange plate and U-shaped steel plate at two ends, and the changeover portion between described flange plate and described U-shaped steel plate is provided with
Grouting Pipe；One end of described horizontal steel plate is extend into the notch of described U-shaped steel plate, in described horizontal steel plate and U-shaped
Equidistantly concrete pod apertures are provided with steel plate；It is provided with the inside and outside both sides of described steel reinforcement cage and only starches iron sheet.
In the above-mentioned technical solutions：The distance between described vertical steel plate and described flange plate are 10-15 centimetres.
In the above-mentioned technical solutions：The distance between described vertical steel plate and described flange plate are 15 centimetres.
In the above-mentioned technical solutions：Described vertical steel plate and flange plate stretch out steel reinforcement cage and meet each 5 centimetres of pitted surface.
In the above-mentioned technical solutions：The thickness of described only slurry iron sheet is 0.5 millimeter.
The utility model also proposed a kind of construction method：A kind of ground-connecting-wall G type joints of pre-buried repeatable Grouting Pipe
Method, comprises the following steps；
1. situation, including segmentation packer permeability test or acoustic wave measurement over holes, are checked according to seam construction quality, divided from bottom to top
Section high-pressure slip-casting；
2. banding steel cage, is required according to design drawing, and a described phase groove cross is installed in described steel reinforcement cage
Shape steel plate and the U-shaped steel plate of the second stage of groove；First pour the steel reinforcement cage of the cross steel plate side of a phase groove；
3., residual sandbag and coagulation again in the U-shaped steel plate of the second stage of groove of construction to a described phase groove cross steel plate side
Soil caking is cleaned with water, is poured positioned at a described cross steel plate 1 of phase groove) the second stage of U-shaped steel plate of side, while ensureing groove
Perpendicularity is not more than 1/300；
4., complete step 1. with step 2. after, after ground-connecting-wall is formed hole is drawn to the slip casting set in Grouting Pipe and entered
Row grouting cleaning bottom of hole, high-pressure injected water mud is segmented every 5 meters；
5., from after the completion of step seam strengthening grouting 4., with band screw socket capping protection Grouting Pipe.
In the above-mentioned technical solutions：When the seam for finding diaphragm wall has infiltration sign, by a phase groove of joint
The concrete chisel removal of cross frid and the U-shaped surface of steel plate of the second stage of groove, in described seam crossing welded closure steel plate, and fills fast
Dry cement or leak stopping king.
In the above-mentioned technical solutions：A described cross steel plate of phase groove includes horizontal steel plate and vertical steel plate；Described
The second stage of U-shaped steel plate of groove includes the flange plate and U-shaped steel plate at two ends, the mistake between described flange plate and described U-shaped steel plate
Cross section and Grouting Pipe is installed；The notch of described horizontal steel plate and described U-shaped steel plate is oppositely arranged, in described horizontal steel plate
Be equidistantly provided with concrete pod apertures on U-shaped steel plate.
In the above-mentioned technical solutions：It is provided with inside and outside described steel reinforcement cage and only starches iron sheet.
In the above-mentioned technical solutions：The distance between described vertical steel plate and described flange plate are 10-15 centimetres.
The utility model has the following advantages that：1st, the utility model easy construction, as long as by design requirement to a phase groove ten
Word steel plate side remains sand pocket and concrete caking is cleaned with water, on the second stage of steel reinforcement cage between U-shaped steel plate and a phase groove cross steel plate
Preset space has rational permission to construction error, can be mutually twisted again, adapts to the deformation of ground-connecting-wall side direction horizontal.
2nd, the utility model is bigger than traditional cross steel plate joint stiffness, and water-stagnating effect more preferably, can be when excavating from base
Side welding steel quick closure seam percolating water is cheated, and can effectively be reduced by the advanced reinforcement of the reserved dynamic slip casting of injected hole
Super Deep Foundation Pit Construction risk.
3rd, the utility model moves to seam anti-leakage grouting reinforcing measure in wall seam from wall seam is outer, and water-stagnating effect is good, work
Journey expense is few, and construction quality is easy to check and judged, construction technology is simple, ripe, is not limited by subterranean depth, can be well
Solve ground-connecting-wall seam leakage problem.
4th, the utility model compared with prior art, can greatly reduce and build ultra-deep foundation pit in high pressure-bearing aquifer water-bearing stratum
The risk of engineering, it is to avoid because speedily carry out rescue work and caused by a large amount of engineering costs and bad social influence, with significant economic benefit and
Social benefit.
Brief description of the drawings
Fig. 1 is structure connection diagram of the present utility model.
Fig. 2 is a phase groove cross-shaped steel plate structure schematic diagram in the utility model.
Fig. 3 is the U-shaped steel plate structure schematic diagram of the second stage of groove in the utility model.
In figure：The cross steel plate 1 of one phase groove, horizontal steel plate 1.1, vertical steel plate 1.2, the U-shaped steel plate 2 of the second stage of groove, flange plate
2.1st, U-shaped steel plate 2.2, only steel reinforcement cage 3, slurry iron sheet 4, concrete pod apertures 5, sealing steel plate 6, Grouting Pipe 7.
Embodiment
Describe performance of the present utility model in detail below in conjunction with the accompanying drawings, but they are not constituted to of the present utility model
Limit, it is only for example, while by illustrating that advantage of the present utility model will become clearer and be readily appreciated that.
Shown in reference picture 1-3：A kind of ground-connecting-wall G type joints of pre-buried repeatable Grouting Pipe, it is cross that it includes a phase groove
Steel plate 1 and the U-shaped steel plate 2 of the second stage of groove, the described cross steel plate 1 of a phase groove and the second stage of U-shaped steel plate 2 of groove are pre-installed in reinforcing bar
In cage 3 and between two adjacent concrete connect wall；In the described cross steel plate 1 of a phase groove and the U-shaped steel plate 2 of the second stage of groove
Between excavation side be provided with sealing steel plate 6；Described the second stage of groove U steel plates 2 are located at the one of the described cross steel plate 1 of a phase groove
Side, the described cross steel plate 1 of a phase groove includes horizontal steel plate 1.1 and vertical steel plate 1.2, and the U-shaped steel plate 2 of described the second stage of groove is wrapped
The flange plate 2.1 and U-shaped steel plate 2.2 at two ends are included, the changeover portion between described flange plate 2.1 and described U-shaped steel plate 2.2
Grouting Pipe 7 is installed；One end of described horizontal steel plate 1.1 is extend into the notch of described U-shaped steel plate 2.2,
Equidistantly hole 5 is provided with described horizontal steel plate 1.1 and U-shaped steel plate 2.2；In described steel reinforcement cage 3
Outer both sides are provided with only slurry iron sheet 4；The distance between described vertical steel plate 1.2 and described flange plate 2.1 are 10-15 lis
Rice.Described vertical steel plate 1.2 and flange plate 2.1 stretch out steel reinforcement cage 3 and meet each 5 centimetres of pitted surface.The described thickness for only starching iron sheet 4
Spend for 0.5 millimeter.
A kind of method of the ground-connecting-wall G type joints of pre-buried repeatable Grouting Pipe of the present utility model, comprises the following steps；
1. situation, including segmentation packer permeability test or acoustic wave measurement over holes, are checked according to seam construction quality, divided from bottom to top
Section high-pressure slip-casting；
2. banding steel cage 3, and the described phase groove ten of installation in described steel reinforcement cage 3, are required according to design drawing
Font steel plate 1 and the U-shaped steel plate 2 of the second stage of groove；First pour the steel reinforcement cage 3 of the cross side of steel plate 1 of a phase groove；
3. residual sandbag, again in the U-shaped steel plate 2 of the second stage of groove of construction to the described side of a phase groove cross steel plate 1 and mixed
Solidifying soil caking is cleaned with water, pours the second stage of U-shaped steel plate 2 positioned at the described cross side of steel plate 1 of a phase groove, while ensureing groove
Perpendicularity be not more than 1/300；
4., complete step 1. with step 2. after, after ground-connecting-wall is formed hole is drawn to the slip casting set in Grouting Pipe 7 and entered
Row grouting cleaning bottom of hole, high-pressure injected water mud is segmented every 5 meters；
5., from after the completion of step seam strengthening grouting 4., with band screw socket capping protection Grouting Pipe 7.
When there is infiltration sign in the seam for finding diaphragm wall, the reason for analyzing infiltration in time, and reserved note can be passed through
Starch hole the ground-connecting-wall seam below excavation face is carried out to shift to an earlier date reinforcement slip casting, prevent trouble before it happens.
By the cross frid 1 of a phase groove of joint and the concrete chisel removal on the second stage of U-shaped surface of steel plate 2 of groove, described
Welded closure steel plate 6 in seam, and fill quick hardening cement or leak stopping king；Described sealing steel plate 6 is located at a phase groove cross-shaped steel
The bottom surface in seam between plate 1 and the second stage of U-shaped steel plate 2 of groove arranges from upper bottom edge, the height and thickness of described sealing steel plate 6
Degree determines that the depth also according to the foundation ditch at scene is determined according to live seepage sand and head size.
The described cross steel plate 1 of a phase groove includes horizontal steel plate 1.1 and vertical steel plate 1.2, described horizontal steel plate 1.1
It is orthogonal with described vertical steel plate 1.2；
The U-shaped steel plate 2 of described the second stage of groove includes the flange plate 2.1 and U-shaped steel plate 2.2 at two ends, in described flange plate 2.1
Changeover portion between described U-shaped steel plate 2.2 is provided with Grouting Pipe 7；Described horizontal steel plate 1.1 and described U-shaped steel plate
2.2 notch is oppositely arranged, and equidistantly hole 5, described transverse direction are provided with described horizontal steel plate 1.1 and U-shaped steel plate 2.2
Steel plate 1.1 is made up of two pieces of small steel plate, and two blocks of described small steel plates are located at the both sides of described vertical steel plate 2.2 respectively；Often
The concrete pod apertures 5 with formed objects on described U-shaped steel plate 2.2, described coagulation are equidistantly provided with individual small steel plate
Native pod apertures 5 are easy to the flowing of the concrete mortar between the cross steel plate 1 of a phase groove and the U-shaped steel plate 2 of the second stage of groove.
Above-mentioned unspecified part is prior art.
Claims (5)
1. a kind of ground-connecting-wall G type joints of pre-buried repeatable Grouting Pipe, it is characterised in that：It includes a cross steel plate of phase groove
(1) and the second stage of U-shaped steel plate of groove (2), a described cross steel plate of phase groove (1) and the second phase U-shaped steel plate of groove (2) is pre-installed in
In steel reinforcement cage (3) and between two adjacent concrete connect wall；In a described cross steel plate of phase groove (1) and the second stage of groove
Side is excavated between U-shaped steel plate (2) sealing steel plate (6)；It is cross that described the second stage of groove U steel plates (2) are located at a described phase groove
The side of steel plate (1), a described cross steel plate of phase groove (1) includes horizontal steel plate (1.1) and vertical steel plate (1.2), described
The U-shaped steel plate of the second stage of groove (2) include the flange plate (2.1) and U-shaped steel plate (2.2) at two ends, in described flange plate (2.1) and institute
Changeover portion between the U-shaped steel plate (2.2) stated is provided with Grouting Pipe (7)；One end of described horizontal steel plate (1.1) extend into institute
In the notch for the U-shaped steel plate (2.2) stated, equidistantly it is provided with described horizontal steel plate (1.1) and U-shaped steel plate (2.2) mixed
Solidifying soil pod apertures (5)；Only slurry iron sheet (4) is provided with inside and outside described steel reinforcement cage (3).
2. a kind of ground-connecting-wall G type joints of pre-buried repeatable Grouting Pipe according to claim 1, it is characterised in that：It is described
The distance between vertical steel plate (1.2) and described flange plate (2.1) be 10-15 centimetres.
3. a kind of ground-connecting-wall G type joints of pre-buried repeatable Grouting Pipe according to claim 1 or 2, it is characterised in that：Institute
The distance between the vertical steel plate (1.2) stated and described flange plate (2.1) are 15 centimetres.
4. a kind of ground-connecting-wall G type joints of pre-buried repeatable Grouting Pipe according to claim 3, it is characterised in that：It is described
Vertical steel plate (1.2) and flange plate (2.1) stretch out steel reinforcement cage (3) and meet each 5 centimetres of pitted surface.
5. a kind of ground-connecting-wall G type joints of pre-buried repeatable Grouting Pipe according to claim 4, it is characterised in that：It is described
Only slurry iron sheet (4) thickness be 0.5 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720107981.9U CN206512759U (en) | 2017-02-04 | 2017-02-04 | A kind of ground-connecting-wall G type joints of pre-buried repeatable Grouting Pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720107981.9U CN206512759U (en) | 2017-02-04 | 2017-02-04 | A kind of ground-connecting-wall G type joints of pre-buried repeatable Grouting Pipe |
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| CN206512759U true CN206512759U (en) | 2017-09-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106759522A (en) * | 2017-02-04 | 2017-05-31 | 长江勘测规划设计研究有限责任公司 | A kind of the ground-connecting-wall G type joints and method of pre-buried repeatable Grouting Pipe |
| CN109930592A (en) * | 2019-04-11 | 2019-06-25 | 深圳宏业基岩土科技股份有限公司 | The construction method of vertical grouting curtain with lower infiltration coefficient |
-
2017
- 2017-02-04 CN CN201720107981.9U patent/CN206512759U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106759522A (en) * | 2017-02-04 | 2017-05-31 | 长江勘测规划设计研究有限责任公司 | A kind of the ground-connecting-wall G type joints and method of pre-buried repeatable Grouting Pipe |
| CN109930592A (en) * | 2019-04-11 | 2019-06-25 | 深圳宏业基岩土科技股份有限公司 | The construction method of vertical grouting curtain with lower infiltration coefficient |
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