CN207944464U - The composite supporting construction that gib soil nail wall is combined with permanent anti-float anchor rod - Google Patents

The composite supporting construction that gib soil nail wall is combined with permanent anti-float anchor rod Download PDF

Info

Publication number
CN207944464U
CN207944464U CN201820252548.9U CN201820252548U CN207944464U CN 207944464 U CN207944464 U CN 207944464U CN 201820252548 U CN201820252548 U CN 201820252548U CN 207944464 U CN207944464 U CN 207944464U
Authority
CN
China
Prior art keywords
anchor rod
float anchor
soil nailing
soil
layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201820252548.9U
Other languages
Chinese (zh)
Inventor
李连祥
陈天宇
白璐
石增军
季相凯
李鹏宇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong University
Original Assignee
Shandong University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shandong University filed Critical Shandong University
Priority to CN201820252548.9U priority Critical patent/CN207944464U/en
Application granted granted Critical
Publication of CN207944464U publication Critical patent/CN207944464U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses the composite supporting constructions that gib soil nail wall is combined with permanent anti-float anchor rod, it is more that it digs digging up and filling in process existing for foundation pit sloping timbering way under solving existing City complex locally, influence the permanent anti-float anchor rod withdrawal resistance in periphery and construction speed and problem of resource waste, efficiently use the permanent anti-float anchor rod in periphery, it is accompanied by soil nailing, slope excavation is changed to uprightly excavate, and promotes foundation pit partial anti-uplift anchor bolt construction, scheme is as follows:Structure includes being inserted into the soil nailing of subway foundation pit side wall, and soil nailing is arranged circumferentially soil nailing holder;Anti-float anchor rod is constructed in outside foundation pit side-wall;Top surface layer, construction are connected in foundation pit side-wall outer surface and at the top of anti-float anchor rod;Side wall surface layer is constructed in subway foundation pit sidewall surfaces, and is connected with soil nailing, and side wall surface layer is connect with top surface layer.

Description

The composite supporting construction that gib soil nail wall is combined with permanent anti-float anchor rod
Technical field
The utility model is related to subway fields, are combined with permanent anti-float anchor rod more particularly to gib soil nail wall Composite supporting construction.
Background technology
With the continuous development of urban construction, in the current large public building underground space, it is equipped with subway station more. Subway station is often below the public underground space, and when level of ground water is higher, underground space structure such as underground garage etc. is generally set Set anchor pole anti-floating.
Had the shortcomings that as follows using general slope Soil-Nailing Wall Structure in such particular surroundings:Fig. 1 (a) and Fig. 1 (b) shown in:
The passive stress of soil nailing, detailing requiments slope, but subway station are among the underground space, slope will increase excavate, Backfilling working amount, while influencing both sides anti-float anchor rod and constructing in advance, and can not consider influence of the backfill to anti-pulling of anchor bar, only Rock-bolt length can be increased, increase process in this way, extend the duration, waste investment.
Therefore, it is necessary to carry out research with the composite supporting construction that permanent anti-float anchor rod is combined to gib soil nail wall to set Meter.
Utility model content
In order to overcome the deficiencies of the prior art, the utility model provides gib soil nail wall and permanent anti-float anchor rod phase In conjunction with composite supporting construction, it is contemplated that the distance of anti-float anchor rod is closer at a distance from soil nailing, if regarding anti-float anchor rod as mini pile, And combined with soil nail wall, gib soil nail wall and the cooperative composite supporting construction of permanent anti-float anchor rod are just formed, is realized The combination of gib and permanent structure:The subway work stage enhances overall stability using the lateral rigidity of anti-float anchor rod, Realize upright excavate;The function of anchor pole is played after the backfill of subway station -- permanent anti-floating effect.
Gib soil nail wall is as follows with the concrete scheme for the composite supporting construction that permanent anti-float anchor rod is combined:
The composite supporting construction that gib soil nail wall is combined with permanent anti-float anchor rod, including:
It is inserted into the soil nailing of subway foundation pit side wall, soil nailing is arranged circumferentially soil nailing holder;
Anti-float anchor rod is constructed in outside foundation pit side-wall;
Top surface layer, construction are connected in foundation pit side-wall outer surface and at the top of anti-float anchor rod;
Side wall surface layer is constructed in subway foundation pit sidewall surfaces, and is connected with soil nailing, and side wall surface layer is connect with top surface layer, Top surface layer and side wall surface layer longitudinal cross-section in this way is L-shaped.
Further, the soil nailing holder includes multigroup, and soil nailing includes soil nailing body, and soil nailing body includes soil nailing longitudinal reinforcement, Every group of soil nailing holder is circumferential to be set to soil nailing longitudinal reinforcement, passes through the setting of soil nailing holder, it is ensured that at the longitudinal reinforcement of soil nailing In center, and the vertical muscle one of soil nailing holder and soil nailing works, and improves the anti-pulling capacity of soil nailing.
Further, the side wall surface layer is concrete topping, and vertical reinforcement net is arranged in side wall surface layer, in setting soil nailing Afterwards, vertical reinforcement net is set along subway foundation pit side wall, the online portion of vertical reinforcement is connect with reserved upper reinforcement.
Further, there are the first connection reinforcing bars being connect with the top surface layer at the top of the anti-float anchor rod.
Further, the first connection reinforcing bar includes multiple, and multiple first connection reinforcing bars are radial.
Further, transverse steel net is set in the top surface layer, and transverse steel net end, which is reserved with, to be used for and side wall The reinforcing bar of face layer connection, top surface layer is for covering at the top of anchor pole, while as the connecting plate of termination point of anchor rod, top surface layer is set It sets and termination point of anchor rod is connected as an entirety.
Further, at least four Reinforcements are set inside the anti-float anchor rod.
Further, the connecting pin setting of the soil nailing and side wall surface layer connect with vertical reinforcement net in side wall surface layer the Two connection reinforcing bars, the second connection reinforcing bar are similarly the reservation member of soil nailing end, and the second connection reinforcing bar is steel tie, steel tie It is connected with soil nailing, the bar connecting that vertical reinforcement net and top transverse steel net are reserved, top surface layer and side wall surface layer are jointly about Beam anti-float anchor rod and soil nailing work.
Further, the locator for determining inner steel bar position is arranged in the anti-float anchor rod, and locator includes ring To hoop set on the locator inner ring of reinforcing bar and the locator outer shroud being arranged with locator inner ring concentric, the center of circle of locator is passed through Point setting cross reinforcing bar, by the setting of locator, makes 4 longitudinal reinforcements become with connecting positioner inner ring and locator outer shroud One entirety, ensures the insertion of anti-float anchor rod;4 reinforcing bars can be separated simultaneously, make its uniform stressed.
Further, soil nailing holder described in every group includes three sections of arch steels, the both ends of every section of arch steel respectively with soil The longitudinal reinforcement of nail is welded and fixed, and arch steel is formed by straight bar bending set angle.
The construction method for the composite supporting construction that gib soil nail wall is combined with permanent anti-float anchor rod, specific steps are such as Under:
1) on the ground of estimated Metro Excavation foundation pit, anti-float anchor rod drilling is drilled through vertically downward on ground, in drilling interpolation Enter the anti-float anchor rod of pre-production;
2) cement mortar is injected into anti-float anchor rod drilling;
3) step 1)-step 2) is repeated, until anti-float anchor rod all complete by construction, in anti-float anchor rod top layout transverse steel Net, transverse steel net end are reserved with the reinforcing bar for being connect with side wall surface layer;
4) to transverse steel net casting concrete;
5) after anchor pole and top concrete intensity reach requirement, at vertical cut subway to first row soil nailing absolute altitude;
6) towards meet native face drill through obliquely horizontal by set angle soil nailing drilling;
7) it is inserted into the good soil nailing body of pre-production, is in the milk into soil nailing drilling;
8) be laid with vertical reinforcement net along foundation pit side-wall surface, the bar connecting that top and transverse steel net are reserved, and by its It is connect with soil nailing end, to foundation pit side-wall gunite concrete;
9) continue to excavate, repeat step 6)-step 8);
10) lower part subway main body structure construction;
11) backfilling of earthwork, soil nailing lose supporting effect;
12) whole construction of bottom plates, anti-float anchor rod play permanent anti-floating effect.
Compared with prior art, the utility model has the beneficial effects that:
1) the utility model structure makes full use of reinforcement effect of the live anti-float anchor rod to the soil body, while solving soil nailing branch Protection structure slope excavates unnecessary excavation, the embankment working-procedure problem brought, and slope excavation is changed to uprightly excavate, is effectively shortened Construction period.
2) the utility model is by being combined anti-float anchor rod with soil nailing, take full advantage of anti-float anchor rod vertically pulling-resistant and Lateral bending resistance mechanical characteristic, forms gib and the combination of permanent structure, saves material.
3) the utility model structure realizes effective combination of permanent structure and gib, for increasing investment returns, saves About the duration has engineering value and theory significance.
Description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, and the application's shows Meaning property embodiment and its explanation do not constitute the improper restriction to the application for explaining the application.
Fig. 1 (a) is original place iron open excavation section slope Soil-Nailing Wall Structure floor map.
Fig. 1 (b) is original place iron open excavation section slope Soil-Nailing Wall Structure diagrammatic cross-section.
Fig. 2 is the composite supporting construction signal that the gib soil nail wall of the utility model is combined with permanent anti-float anchor rod Figure.
Fig. 3 is the utility model anchor rod body schematic diagram.
Fig. 4 is the utility model anchor rod body locator schematic diagram.
Fig. 5 is the utility model soil nailing schematic diagram.
Fig. 6 is the utility model soil nailing support schematic diagram.
Fig. 7 is the utility model foundation pit side arm bar-mat reinforcement schematic diagram.
Wherein:1 is soil nailing and side wall concrete topping junction, and 2 be side wall surface layer, and 3 be structure of the subway, and 4 be soil nailing, 5 It is anti-float anchor rod, 6 be the first connection reinforcing bar, and 7 be top surface layer, and 8 be anchor pole Reinforcement, and 9 be locator, and 10 be cement Mortar, 11 be locator inner ring, is locator outer shroud with reinforcement welding, 12,13 be cross reinforcing bar, and 14 be soil nailing holder, and 15 are Soil nailing body, 16 be arch steel, and 17 be soil nailing longitudinal reinforcement, and 18 be the elongated connection reinforcing bar of soil nailing, and 19 be vertical reinforcement net.
Specific implementation mode
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
As background technology is introduced, the deficiencies in the prior art, in order to solve technical problem as above, this Shen It please propose the composite supporting construction that gib soil nail wall is combined with permanent anti-float anchor rod.
In a kind of typical embodiment of the application, as shown in Fig. 2, gib soil nail wall and permanent anti-float anchor rod phase In conjunction with composite supporting construction, include the soil nailing 4 for being inserted into subway foundation pit side wall, soil nailing 4 is arranged circumferentially soil nailing holder 14, soil nailing 3 It is provided with multilayer, every layer of soil nailing 3 is inclined relative to horizontal setting, and angle is 15 ° diagonally downward, and every layer of soil nailing 3 is in same layer It is equally spaced;Anti-float anchor rod 5, construction is in outside foundation pit side-wall, and anti-float anchor rod 5 is equipped with multiple rows of, and often row is equally spaced, anti-floating anchor It is quincuncial arrangement at 5 different layers of bar;Top surface layer 7 (horizontally disposed) is connected with 5 top of anti-float anchor rod;Side wall surface layer is (perpendicular Straight setting), subway foundation pit sidewall surfaces are set to, and be connected with soil nailing and form soil nailing and side wall surface layer junction 1, outermost anti-floating Distance of the anchor pole apart from foundation pit side-wall is 0.1m-0.5m, the anti-float anchor rod neighbor distance 1.0m often arranged.
Soil nailing holder 14 includes multigroup, two adjacent groups interval 1.5m, and every group circumferential set on soil nailing longitudinal reinforcement 17, passes through The setting of soil nailing holder 14, it is ensured that the longitudinal reinforcement of soil nailing is in center, and the vertical muscle one of soil nailing holder and soil nailing It works, improves the anti-pulling capacity of soil nailing, soil nailing holder 14 described in every group includes three sections of arch steels 16, every section of arc The both ends of reinforcing bar 16 are fixed with the longitudinal reinforcement of soil nailing 17 respectively, and arch steel is formed by straight bar bending set angle.
Vertical reinforcement is arranged along subway foundation pit side wall after soil nailing is arranged in setting vertical reinforcement net 19 in side wall surface layer Net 19, then in setting top surface layer, alternatively, setting soil nailing elongated connection reinforcing bar 18 with soil nailing 4 to connect in side wall surface layer.
As shown in figure 3, there are the first connection reinforcing bar 6 being connect with the top surface layer, the first connections at the top of anti-float anchor rod Reinforcing bar 6 includes multiple, and multiple first connection reinforcing bars 6 are radial.
Top surface layer 7, covering anchor pole top, while as the connecting plate of termination point of anchor rod, the lateral steel of the interior setting of top surface layer 7 Muscle net, radial first connection reinforcing bar 6 are connect with top surface layer 7, contribute to stable connection.5 inside setting of anti-float anchor rod is extremely Few four Reinforcements 8.
The second connection steel that soil nailing 4 is connect with the setting of the connecting pin of side wall surface layer 18 with vertical reinforcement net in side wall surface layer Muscle, the second connection reinforcing bar are similarly the reservation member of soil nailing end.
The locator for determining inner steel bar is arranged in anti-float anchor rod 5, is set as shown in figure 4, locator includes circumferential hoop In reinforcing bar locator inner ring 11 and with 11 concentric of locator inner ring setting locator outer shroud 12, pass through locator the center of circle Point setting cross reinforcing bar 13 is attached with connecting positioner inner ring 11 and locator outer shroud 12 by welding manner.
The construction method for the composite supporting construction that gib soil nail wall is combined with permanent anti-float anchor rod, specific steps are such as Under:
1) on the ground of estimated Metro Excavation foundation pit, anti-float anchor rod drilling is drilled through vertically downward on ground, in drilling interpolation Enter the anti-float anchor rod of pre-production;
2) cement mortar is injected into anti-float anchor rod drilling;
3) step 1)-step 2) is repeated, until anti-float anchor rod all complete by construction, in anti-float anchor rod top layout transverse steel Net, transverse steel net end are reserved with the reinforcing bar for being connect with side wall surface layer;
4) to transverse steel net casting concrete;
5) after anchor pole and top concrete intensity reach requirement, at vertical cut subway to first row soil nailing absolute altitude;
6) towards meet native face drill through obliquely horizontal by set angle soil nailing drilling;
7) it is inserted into the good soil nailing body of pre-production, is in the milk into soil nailing drilling;
8) vertical reinforcement net, top and reserved bar connecting are laid with along foundation pit side-wall surface, and by itself and soil nailing end Connection, to foundation pit side-wall gunite concrete;
9) continue to excavate, repeat step 6)-step 8);
10) lower part subway main body structure construction;
11) backfilling of earthwork, soil nailing lose supporting effect;
12) whole construction of bottom plates, anti-float anchor rod play permanent anti-floating effect.
The foregoing is merely the preferred embodiments of the application, are not intended to limit this application, for the skill of this field For art personnel, the application can have various modifications and variations.Within the spirit and principles of this application, any made by repair Change, equivalent replacement, improvement etc., should be included within the protection domain of the application.

Claims (9)

1. the composite supporting construction that gib soil nail wall is combined with permanent anti-float anchor rod, which is characterized in that including:
It is inserted into the soil nailing of subway foundation pit side wall, soil nailing is arranged circumferentially soil nailing holder;
Anti-float anchor rod is constructed in outside foundation pit side-wall;
Top surface layer, construction are connected in foundation pit side-wall outer surface and at the top of anti-float anchor rod;
Side wall surface layer is constructed in subway foundation pit sidewall surfaces, and is connected with soil nailing, and side wall surface layer is connect with top surface layer.
2. the composite supporting construction that gib soil nail wall according to claim 1 is combined with permanent anti-float anchor rod, It is characterized in that, the soil nailing includes soil nailing body, and soil nailing body includes soil nailing longitudinal reinforcement, and every group of soil nailing holder is circumferential to be set to soil nailing Longitudinal reinforcement;
Further, soil nailing holder described in every group includes three sections of arch steels, the both ends of every section of arch steel respectively with soil nailing Longitudinal reinforcement is fixed.
3. the composite supporting construction that gib soil nail wall according to claim 1 is combined with permanent anti-float anchor rod, It is characterized in that, the side wall surface layer is concrete topping, and vertical reinforcement net is arranged in side wall surface layer.
4. the composite supporting construction that gib soil nail wall according to claim 1 is combined with permanent anti-float anchor rod, It is characterized in that, there are the first connection reinforcing bars being connect with the top surface layer at the top of the anti-float anchor rod.
5. the composite supporting construction that gib soil nail wall according to claim 4 is combined with permanent anti-float anchor rod, It is characterized in that, the first connection reinforcing bar includes multiple, and multiple first connection reinforcing bars are radial.
6. the composite supporting construction that gib soil nail wall according to claim 4 is combined with permanent anti-float anchor rod, It is characterized in that, the transverse steel net that setting connect bar connecting with first in the top surface layer.
7. the composite supporting construction that gib soil nail wall according to claim 1 is combined with permanent anti-float anchor rod, It is characterized in that, at least four Reinforcements is set inside the anti-float anchor rod.
8. the composite supporting construction that gib soil nail wall according to claim 3 is combined with permanent anti-float anchor rod, It is characterized in that, the elongated connection steel being connect with vertical reinforcement net in side wall surface layer is arranged with the connecting pin of side wall surface layer in the soil nailing Muscle.
9. the composite supporting construction that gib soil nail wall according to claim 7 is combined with permanent anti-float anchor rod, It is characterized in that, the locator for determining inner steel bar position is arranged in the anti-float anchor rod, and locator includes that circumferential hoop is set to The locator inner ring of reinforcing bar and the locator outer shroud being arranged with locator inner ring concentric pass through the centre point setting ten of locator Word reinforcing bar is with connecting positioner inner ring and locator outer shroud.
CN201820252548.9U 2018-02-12 2018-02-12 The composite supporting construction that gib soil nail wall is combined with permanent anti-float anchor rod Expired - Fee Related CN207944464U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820252548.9U CN207944464U (en) 2018-02-12 2018-02-12 The composite supporting construction that gib soil nail wall is combined with permanent anti-float anchor rod

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820252548.9U CN207944464U (en) 2018-02-12 2018-02-12 The composite supporting construction that gib soil nail wall is combined with permanent anti-float anchor rod

Publications (1)

Publication Number Publication Date
CN207944464U true CN207944464U (en) 2018-10-09

Family

ID=63699850

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201820252548.9U Expired - Fee Related CN207944464U (en) 2018-02-12 2018-02-12 The composite supporting construction that gib soil nail wall is combined with permanent anti-float anchor rod

Country Status (1)

Country Link
CN (1) CN207944464U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108149696A (en) * 2018-02-12 2018-06-12 山东大学 The composite supporting construction and construction method that a kind of gib soil nail wall is combined with permanent anti-float anchor rod

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108149696A (en) * 2018-02-12 2018-06-12 山东大学 The composite supporting construction and construction method that a kind of gib soil nail wall is combined with permanent anti-float anchor rod
CN108149696B (en) * 2018-02-12 2019-09-13 山东大学 A kind of construction method for the composite supporting construction that gib soil nail wall is combined with permanent anti-float anchor rod

Similar Documents

Publication Publication Date Title
CN101864963B (en) Large-section loess tunnel construction method
CN103321659A (en) Large-diameter tube curtain support underground excavation construction super-shallow burying large-section subway station structure and construction method
CN106088650B (en) A kind of method and building suitable for building with brick-concrete structure underground increasing layer
CN108868778B (en) Non-excavation construction method for large underground structure
CN107100653A (en) A kind of flat top wall pipe curtain structure builds the construction method of super Shallow Covered Metro Station
CN105736001B (en) A kind of construction method using prefabricated parts subway station
CN102691302B (en) Concrete structure for supporting deep foundation pit
CN106337686B (en) Three layers of subway station canopy structure of rocky stratum tunneling and construction method
CN204729099U (en) Rock quality layer tunneling three layers of subway station canopy structure
CN105089061A (en) Ultra-deep foundation pit supporting method
CN110004919B (en) Foundation pit enclosure construction method used in pipeline influence range
CN105587320B (en) Rich water sand-pebble layer abnormal shape deep shaft structural system and its construction method
CN105041349A (en) Underground excavation construction method for expanded excavation of station on basis of metro regional shield tunnel
CN106703828A (en) The construction method of building subway station with fabricated lining combination PBA
CN106759376B (en) For closing on the construction method of the Anchored Sheet Pile Wall for Excavation system of existing underground structure
CN108035361A (en) A kind of advanced support supporting construction and its construction method
CN105064397A (en) Open excavation construction method for expanding excavation of station on metro interzone shield tunnel foundation
CN108149696B (en) A kind of construction method for the composite supporting construction that gib soil nail wall is combined with permanent anti-float anchor rod
CN104131566B (en) A kind of basement is without the construction method of horizontal support foundation ditch
CN108589771B (en) Construction method for layer-adding transfer node of operated underground station
CN104563130A (en) Cross-shaped enclosure pile and construction method capable of using a structure as enclosure structure and main body structure
CN207944464U (en) The composite supporting construction that gib soil nail wall is combined with permanent anti-float anchor rod
CN106245927B (en) A kind of method and building suitable for frame structure building underground increasing layer
CN208702421U (en) The tunnel support structure of existing pile foundation building is worn under a kind of
CN206220558U (en) Old City Wall door opening ruggedized construction

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20181009

Termination date: 20190212