CN109184734A - A kind of assembled protective case liner structure for the rectangle underground space and apply method - Google Patents
A kind of assembled protective case liner structure for the rectangle underground space and apply method Download PDFInfo
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- CN109184734A CN109184734A CN201811232416.0A CN201811232416A CN109184734A CN 109184734 A CN109184734 A CN 109184734A CN 201811232416 A CN201811232416 A CN 201811232416A CN 109184734 A CN109184734 A CN 109184734A
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- 230000001681 protective effect Effects 0.000 title claims abstract description 248
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 118
- 238000005520 cutting process Methods 0.000 claims abstract description 100
- 230000002093 peripheral effect Effects 0.000 claims abstract description 38
- 239000002689 soil Substances 0.000 claims abstract description 25
- 239000011435 rock Substances 0.000 claims abstract description 24
- 230000006835 compression Effects 0.000 claims abstract description 9
- 238000007906 compression Methods 0.000 claims abstract description 9
- 230000000694 effects Effects 0.000 claims abstract description 7
- 239000002131 composite material Substances 0.000 claims abstract description 6
- 238000009412 basement excavation Methods 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000004567 concrete Substances 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 102100040287 GTP cyclohydrolase 1 feedback regulatory protein Human genes 0.000 claims description 9
- 101710185324 GTP cyclohydrolase 1 feedback regulatory protein Proteins 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 9
- 239000011440 grout Substances 0.000 claims description 8
- 230000005641 tunneling Effects 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 7
- 238000007569 slipcasting Methods 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 5
- 238000013461 design Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 238000005065 mining Methods 0.000 claims description 4
- 238000005056 compaction Methods 0.000 claims description 3
- 238000007596 consolidation process Methods 0.000 claims description 3
- 210000003746 feather Anatomy 0.000 claims description 3
- 230000036316 preload Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 20
- 230000006378 damage Effects 0.000 description 7
- 238000005336 cracking Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 210000004911 serous fluid Anatomy 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 230000031068 symbiosis, encompassing mutualism through parasitism Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
- E02D29/05—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
- E21D11/157—Laggings making use of fluid cushions, e.g. the fluid containing a hardenable material
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Architecture (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a kind of assembled protective case liner structure for the rectangle underground space and apply method, including the protective case lining cutting main unit being arranged by rectangle underground space profile head, bottom and both sides and protective case lining cutting angle body unit, it is connected along the splicing of section circumferential direction and forms.Protective case lining cutting main unit includes protective case I, is filling material I inside protective case I；Protective case lining cutting angle body unit includes protective case II, is filling material II inside protective case II.The strength of materials that protective case II, the strength of materials for filling material II are respectively greater than protective case I, fill material I.Protective case I, the outer ring of protective case II and inner peripheral surface pass through along same position site of perforation and are equipped with prestressed bolt.Prestressed bolt is applied with prestressing force, radial compression can be generated to protective case I and filling material I, protective case II and filling material II, prestressed bolt is set to form composite bearing structure with protective case I and filling material I, protective case II and filling material II respectively, it is common to resist external Rock And Soil pressure effect.
Description
Technical field
The present invention relates to underground space engineering support technical field more particularly to a kind of assembly for the rectangle underground space
Formula protective case liner structure and apply method.
Background technique
Currently, with the continuous propulsion of Urbanization in China, various types of urban underground space engineerings, as subway,
Piping lane, underground utilities etc. obtain huge opportunity to develop in China's Process of Urban Development.By taking Urban Metro Construction as an example,
Shield method is a kind of currently used most common construction method.Traditional shield tunnel section is mostly circle, but disconnected with rectangle
Face tunnel is compared, and but there is the deficiencies of scetion utilization is low, earthwork excavated volume is big.For example, in view of the above-mentioned problems, in December, 2016
Shanghai Tunnel Engineering Co., Ltd successfully has developed class rectangle complete-section tunnel boring machine the biggest in the world " bright number of sun " shield machine, has
Effect solves the wasting of resources phenomenon of traditional two single line circular cross section schemes in double track tunnel digging process, realizes underground sky
Between resource efficient utilization.In addition, City Subway Station, Pipe rack section are also mostly rectangle.Therefore, in following China underground
During space development, the underground space engineering of rectangular cross section will possess broader Popularization And Development prospect.
According to whether excavating earth surface, the construction method of urban underground space engineering mainly includes that cut and cover method and subsurface excavation method two are big
Class, it is whether cast-in-place according to underground engineering support liner structure, prefabricated assembled and cast-in-place monoblock type two major classes can be divided into.With it is cast-in-place
Formula underground structure is compared, and prefabricated assembled Underground Construction speed is fast, is also obtained in the underground space engineering construction of current city
Huge popularization and application were obtained, such as prefabricated assembled Pipe rack, duct pieces of shield tunnel etc..Meanwhile for traditional underground engineering
Liner supporting structure, mostly uses armored concrete formula structure, and applying for such underground structure is both needed to by assembling reinforcement, formwork erection
Plate pours the processes such as maintenance, demoulding, and reinforcing bar binding relies primarily on worker and carries out by hand, and there are complicated construction techniques, binding essence
The disadvantages of spending low, large labor intensity.Moreover, also easily there is face checking, breaks in traditional reinforced concrete lining layer supporting construction
It phenomena such as damage, chip off-falling, has seriously affected used in Underground Engineering Lining and has applied quality, brought risk and unfavorable shadow to underground engineering construction
It rings.In addition, the underground liner supporting structure of rectangular cross section is also easily generated stress in four edges of rectangular cross section and is concentrated
Phenomenon, lining cutting connection and processing about 4 edges are a difficult points of such cross-section underground space control, also disconnected to rectangle
The liner structure of face form proposes higher design requirement.For above-mentioned series of problems, the invention proposes one kind to be used for rectangle
The assembled protective case liner structure of the underground space and method is applied, can effectively solved.
Summary of the invention
For circular cross section space utilization rate present in underground space engineering, low, rectangular cross section liner structure is also easy to produce side
At angle stress concentrate, reinforced concrete structure it is easy to crack it is damaged, apply cumbersome technique, large labor intensity, quality and be difficult to precisely control
The problems such as processed, for efficient utilization and the safe construction for realizing the underground space, the invention proposes one kind to be used for the rectangle underground space
Assembled protective case liner structure and apply method, be prefabricated construction, can effectively avoid conventional steel bar concrete lining cutting
The cracking destruction problem that structure occurs improves lining cutting bearing strength, ensures the safety and stablization construction of the rectangular cross section underground space,
Lining cutting can also be reduced and apply labor intensity, lining cutting is promoted and apply quality, while there is reduction dead load, avoid corrosion and environmental protection
The advantages such as efficient.
To achieve the above object, the specific technical solution of the present invention is as follows:
A kind of assembled protective case liner structure for the rectangle underground space, including at the top of the rectangular cross section underground space, bottom
And the respectively arranged protective case lining cutting main unit in both sides, the protective case lining cutting main unit is in the rectangular cross section underground space four
A edge carries out splicing using protective case lining cutting angle body unit and is connected；Each protective case lining cutting main unit includes protective case I,
It is filling material I inside the protective case I；Each protective case lining cutting angle body unit includes protective case II, the protective case II
Inside is filling material II；The outer peripheral surface side of the protective case I, protective case II is contacted with formation rock soil body surface, inner peripheral surface
Towards inside the rectangle underground space, the outer ring of protective case I and protective case II, inner peripheral surface uniform intervals offer multiple same positions for side
Perforation, along outer ring, inner peripheral surface same position site of perforation pass through prestressed bolt is installed；The prestressed bolt with
Protective case I, the inner ring of protective case II, outer peripheral surface are vertical, and are applied with prestressing force, can be to protective case I and internal filling material I, protective case
II and internal filling material II generate radial compression, make prestressed bolt respectively with protective case I and filling material I, protective case II and fill
Composite bearing structure is collectively formed in note material II, common to resist Rock And Soil pressure effect around the rectangle underground space.
Further, the protective case I, protective case II and prestressed bolt material include but is not limited to GFRP material, steel.
Further, the filling material I, filling material II are poured by filling inside protective case I and protective case II respectively
The mode built is made, and filling material I, the material for filling material II include but is not limited to that concrete, rubble+cement grout fill
Infuse material.
Further, the protective case II, fill material II the strength of materials be respectively greater than protective case I, fill material I material
Expect intensity, to guarantee that the integral strength of protective case lining cutting angle body unit is greater than protective case lining cutting main unit, makes rectangular cross section lining cutting knot
Structure in four edges local bearing strength with higher, prevent edge due to stress concentration phenomenon failure damage.
Further, it is answered positioned at the outer ring of the protective case I of each protective case lining cutting main unit, the pre- of inner peripheral surface centre
The power anchor bolt body of rod is hollow form, can after the completion of the multiple protective case lining cutting main units in scene and the splicing of protective case lining cutting angle body unit
Lining cutting grouting behind shaft or drift lining is carried out using the prestressed bolt in centre, is filled between lining cutting outer peripheral surface and formation rock soil body surface
Gap, the Rock And Soil pressure for making to act on lining cutting outer peripheral surface more evenly, avoid generating stress concentration phenomenon, also can avoid underground
Water immerses inside the rectangle underground space.
Further, the prestressed bolt body of rod of the hollow form is installed in the inner peripheral surface side end close to protective case I
There is charging valve, slip casting can be carried out by the prestressed bolt outer end position in centre when opening charging valve, after lining wall
It after the completion of slip casting, can be turned off, avoid generating grouting serous fluid outer-flowing phenomenon.
Further, the connecting method of multiple protective case lining cutting main units and protective case lining cutting angle body unit include but
It is not limited to be bolted, bolt-type connection, feather joint mode, each unit is along rectangle underground space circumferential direction and axial splicing junction
Place is equipped with waterstop.
Further, the protective case I, protective case II production method include but is not limited to the direct pouring molding of mold, weldering
Connect assembled, mechanical connection assembling mode.
Further, the protective case I, protective case II along the circumferential a certain end surface side of the rectangle underground space or along square
Axially a certain end surface side is equipped with an opening to the shape underground space；The opening cooperates with a sealing cover；The sealing cover
Material it is identical as the material of protective case I, protective case II respectively.
Method specifically is applied the present invention also provides a kind of assembled protective case liner structure for the rectangle underground space,
The following steps are included:
Step 1, prefabricated to apply the stage:
Step (1-1), according to the design of rectangle underground space cross dimensions, integrated carrying intensity and edge part bearing strength
It is required that processing and fabricating protective case I and protective case II, and respectively at it along the circumferential a certain end surface side of the rectangle underground space or along rectangle
Axially opening processing is done in a certain end surface side to the underground space；
Step (1-2), respectively along protective case I, the outer peripheral surface of protective case II and inner peripheral surface same position site of perforation, installation is answered in advance
Power anchor bolt, and once pre-tightened；
Step (1-3), the side of protective case I and protective case II opening position, is utilized respectively filling material I, filling along step (1-1)
Material II carries out the filling inside protective case I and protective case II；
Step (1-4), after filling material I, the filling material II inside protective case I and protective case II solidify, in its position side that is open
Plastering leveling is carried out, and is utilized respectively sealing cover and closes the side opening；
Step (1-5) carries out secondary preload to the prestressed bolt of protective case I and protective case II respectively, applies prestressing force, keeps its right
Protective case I and internal filling material I, protective case II and internal filling material II generate effective radial compression respectively；
Step (1-6), repeat the above steps (1-1) ~ (1-5), completes multiple protective case lining cutting main units and protective case lining cutting angle body
The production of unit；
Step 2, the on-site consolidation stage:
The intact multiple protective case lining cutting main units of above-mentioned production and protective case lining cutting angle body unit are moved into engineering site, if underground
Space engineering uses shallow mining method, then after rectangle underground space tunneling Rock And Soil excavation, is directly carried out splicing and be connected；
If underground space engineering uses cut and cover tunneling, is spliced after open cut Rock And Soil excavation and be connected, and carry out liner structure
The backfill and compaction treatment of exterior circumferential Rock And Soil；
Step 3, the grouting behind shaft or drift lining stage:
Step (3-1) carries out lining wall using the prestressed bolt in protective case lining cutting main unit outer ring, inner peripheral surface centre
Grouting behind shaft or drift lining fills gap between lining cutting outer peripheral surface and surrounding Rock And Soil；
Step (3-2), after the completion of slip casting, the charging valve of the prestressed bolt at closing center position；
Step 4, after lining cutting grouting behind shaft or drift lining grout cures, applying for this kind of liner structure of the present invention is completed.
The invention has the benefit that
1) this kind of assembled protective case lining cutting of the invention is in the subway station of rectangular cross section, underground pipe gallery, underground utilities, underground
The engineering fields such as tunnel can be applied, while this kind of lining cutting had both been applicable to the cut and cover tunneling underground space, be equally applicable to dark
The digging method construction underground space, therefore the present invention has the wider scope of application；
2) this kind of assembled protective case lining cutting of the invention, provides a kind of effective support technology for rectangle underground space engineering excavation
Means have ensured the excavation safety and stablization construction of the rectangle underground space, have realized the efficient utilization of the underground space, while also big
The construction speed of underground space engineering is improved greatly；
3) the protective case lining cutting angle body unit of four edges is set in this kind of liner structure of the invention, using with higher-strength
Protective case and filling material, it is ensured that protective case lining cutting angle body unit bearing strength be greater than protective case lining cutting main unit, avoid rectangle
There is the problem of local failure due to stress concentration phenomenon in four edges in cross-section underground structure；
4) the protective case material of this kind of assembled protective case lining cutting of the invention can be the materials such as steel or GFRP, and selection range is wider, together
When such Tensile strength it is higher, can to inside filling material carry out cuff constraint, realize both power symbiosis, show compared with
High-mechanic intensity can avoid conventional steel bar concrete body structure surface cracking destruction phenomenon, while when material is GFRP material, also
It can effectively reduce composite structure self weight, save transport and apply cost, avoid scene from meeting water and generate corrosion；
5) components such as protective case, prestressed bolt used by this kind of assembled protective case lining cutting of the invention can mass directly produce,
Can strict control each section scantling specification, preferably underground space section molding effect is realized, simultaneously because this kind of lining cutting
To be prefabricated assembled, can also solve conventional steel bar concrete structure apply during occur reinforcing bar binding precision it is low, apply matter
Amount difference and phenomenon of using inferior materials and turning out substandard goods, effectively improve underground liner structure applies quality；
6) filling material used by this kind of assembled protective case lining cutting of the present invention can directly utilize underground space engineering excavation debris
Material is made.Specifically, can such as use directly inside protective case, " debris is excavated in primary filling, secondary cement grout fills
Note solidification " mode is made the secondary use, it can be achieved that Underground Engineering Excavation debris, and high-efficiency environment friendly can also reduce supporting material
Expect cost.
Detailed description of the invention
Specific embodiments of the present invention are further described in detail with reference to the accompanying drawing, the schematic reality of the application
Example and its explanation are applied for explaining the application, is not constituted an undue limitation on the present application.
Fig. 1 is the cross-sectional configuration after the completion of the splicing of rectangle of embodiment of the present invention underground space assembled protective case liner structure
Schematic diagram；
Fig. 2 is the left view of C-C section in Fig. 1；
Fig. 3 be Fig. 1 in 7(B) at prestressed bolt position partial enlargement structural representation；
Fig. 4 be Fig. 1 in 7(A) at prestressed bolt position partial enlargement structural representation；
Fig. 5 is the cross-sectional configuration schematic diagram of top protective case lining cutting main unit in Fig. 1；
Fig. 6 is the cross-sectional configuration schematic diagram of left upper protective case lining cutting angle body unit in Fig. 1；
Fig. 7 is the cross-sectional configuration schematic diagram of left side protective case lining cutting main unit in Fig. 1；
Wherein: 1- protective case lining cutting main unit；2- protective case lining cutting angle body unit；3- protective case I；4- fills material I；5- protective case II；
6- fills material II；7- prestressed bolt；8- charging valve；9- Rock And Soil；10- grouting filling layer.
Specific embodiment
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 embodiment, 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 singular
Also it is 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 their combination.
As background technique is introduced, compared with the rectangular cross section underground space, that there are space utilization rates is low for circular cross section,
The deficiencies of earthwork excavated volume is big, the rectangular cross section underground space should have broader practice prospect, but the lining cutting of rectangular cross section underground
Structure is in four edges since stress concentration phenomenon is also also easy to produce local failure.Meanwhile traditional underground reinforced concrete lining
It builds structure and cracking destruction easily occurs, and there are reinforcing bar binding casting craft is complicated and large labor intensity, applies quality and is difficult to precisely
The problems such as control.In view of the above-mentioned problems, the invention proposes a kind of assembled protective case liner structures for the rectangle underground space
And method is applied, it is prefabricated construction, the cracking destruction that can effectively avoid the appearance of conventional steel bar concrete liner structure is asked
Topic improves lining cutting bearing strength, ensures the safety and stablization construction of the rectangular cross section underground space, can also reduce lining cutting and apply labour
Intensity promotes lining cutting and applies quality, while having reduction dead load, avoiding the advantages such as corrosion and environment-friendly high-efficiency.Below with one
For kind is used for the specific structure of the assembled protective case liner structure of the GFRP material of the rectangle underground space and applies technique, below
In conjunction with attached drawing, the present invention will be further described with embodiment.
As shown in Figure 1, a kind of assembled protective case liner structure of the GFRP material for the rectangle underground space, including along square
Shape cross-section underground top of space, the respectively arranged protective case lining cutting main unit 1 in bottom and both sides, the protective case lining cutting main body
Unit 1 carries out splicing using protective case lining cutting angle body unit 2 in four edges of the rectangular cross section underground space and is connected；Described in each
Protective case lining cutting main unit 1 includes protective case I 3, and I 3 inside of protective case is filling material I 4；Each protective case lining cutting angle
Body unit 2 includes protective case II 5, and II 5 inside of protective case is filling material II 6.
The outer peripheral surface side of the protective case I 3, protective case II 5 is contacted with 9 surface of stratum Rock And Soil, inner peripheral surface side direction
Inside the rectangle underground space, protective case I 3 offers wearing for multiple same positions with 5 outer rings of protective case II, inner peripheral surface uniform intervals
Hole passes through along outer ring, inner peripheral surface same position site of perforation and is equipped with prestressed bolt 7；The prestressed bolt 7 and shield
Shell I 3, the inner ring of protective case II 5, outer peripheral surface are vertical, and are applied with prestressing force, can be to protective case I 3 and internal filling material I 4, shield
Shell II 5 and filling material II 6 generate radial compression, make prestressed bolt 7 respectively with protective case I 3 and filling material I 4, protective case II 5
And composite bearing structure is collectively formed in filling material II 6, it is common to resist 9 pressure of Rock And Soil effect around the rectangle underground space.
Further, the protective case I 3, protective case II 5 and 7 material of prestressed bolt are GFRP material, in addition to this, shield
Shell I 3, protective case II 5 and 7 body of rod of prestressed bolt and matching nut material can also be steel etc..The filling material I 4 fills
Note material II 6 is made by way of filling pour inside protective case I 3 and protective case II 5 respectively, filling material I 4, filling
The material of material II 6 is concrete, can also fill material etc. for rubble+cement grout.Protective case I 3, the protective case II 5 of this kind of lining cutting
Material be GFRP material or steel, have compared with high-tensile, and its internal filling material I 4, the resistance to compression for filling material II 6
Intensity is higher, and protective case I 3, protective case II 5 can carry out cuff constraint, both realizations power to inside filling material I 4, filling material II 6
Symbiosis, have compared with high-mechanic intensity, can also effectively solve the cracking destruction etc. that conventional rebar concrete lining structure easily occurs
Problem；Meanwhile by prestressed bolt 7, apply prestressing force, it can be to protective case I 3, protective case II 5 and internal filling material I 4, filling
Material II 6 carries out radial compression, and three can be made to form compound carrying entirety, compared with conventional rebar concrete lining structure,
It can further improve the bearing strength of lining cutting and the safety and stability degree of the rectangle underground space.In addition, when above-mentioned component material is
When GFRP material, composite structure self weight also can effectively reduce, save transport and apply cost, avoid scene from meeting water and generate corrosion.
Further, if above-mentioned filling material I 4, filling material II 6 directly utilize rectangle Underground Space Excavation debris material
It when being made, can be directly respectively adopted inside protective case I 3, protective case II 5 and " once fill and excavate debris, secondary cement grout fills
Note solidification " mode is made the secondary use, it can be achieved that underground space engineering excavation debris, and high-efficiency environment friendly can also reduce branch
Protective material cost.
Further, the protective case II 5, fill material II 6 the strength of materials be respectively greater than protective case I 3, filling material I 4
The strength of materials, with guarantee protective case lining cutting angle body unit 2 integral strength be greater than protective case lining cutting main unit 1, make rectangular cross section
Liner structure prevents edge from failing brokenly due to stress concentration phenomenon in four edges local bearing strength with higher
It is bad.
Further, positioned at the outer ring of the protective case I 3 of each protective case lining cutting main unit 1, inner peripheral surface centre it is pre-
Stress anchor bolt 7(B) body of rod is hollow form, splices to the multiple protective case lining cutting main units 1 in scene and protective case lining cutting angle body unit 2
Cheng Hou, using the prestressed bolt 7(B in centre) lining cutting grouting behind shaft or drift lining is carried out, fill lining cutting outer peripheral surface and formation rock
Gap between 9 surface of the soil body, 9 pressure of Rock And Soil for making to act on lining cutting outer peripheral surface more evenly, avoid generating stress concentrate it is existing
As also can avoid inside the underground water intrusion rectangle underground space.Specifically see the 7(B in attached drawing 1) at the prestressed bolt body of rod
Specific structure for hollow structure, the body of rod is shown in Fig. 3；At (7(A of example as shown in figure 1) of other positions) the prestressed bolt body of rod is
The specific structure of solid construction, the body of rod is shown in Fig. 4；
Further, the prestressed bolt 7(B of the hollow form) body of rod close to protective case I 3 inner peripheral surface side end install
Have charging valve 8, the prestressed bolt 7(B in centre can be passed through when opening charging valve 8) the progress slip casting of outer end position, wait serve as a contrast
It after the completion of building grouting behind shaft or drift lining, can be turned off, avoid generating grouting serous fluid outer-flowing phenomenon.
Further, the protective case I 3, protective case II 5 production method be the direct pouring molding of mold, if protective case I 3, shield
The material of shell II 5 is steel, can also be made by modes such as welding assembly, mechanical connection assemblings.
Further, the connecting method of multiple protective case lining cutting main units 1 and protective case lining cutting angle body unit 2 is spiral shell
It tethers and connects, can be also attached by modes such as bolt-type connection, feather joints；Meanwhile each unit is along rectangle underground space ring
It is equipped with waterstop at junction to splicing with axial direction, to prevent underground water in stratum from invading rectangle underground space inner space.
Further, the protective case I 3, protective case II 5 along the circumferential a certain end surface side of the rectangle underground space or edge
Axially a certain end surface side is equipped with an opening to the rectangle underground space, can be used for protective case I 3, II 5 inside of protective case fills material I 4
Filling with filling material II 6 pours；The opening cooperates with a sealing cover；The material of the sealing cover respectively with protective case I
3, the material of protective case II 5 is identical.
Method specifically is applied the present invention also provides a kind of assembled protective case liner structure for the rectangle underground space,
The following steps are included:
Step 1, prefabricated to apply the stage:
Step (1-1), according to the design of rectangle underground space cross dimensions, integrated carrying intensity and edge part bearing strength
It is required that processing and fabricating protective case I 3 and protective case II 5, and respectively at it along the circumferential a certain end surface side of the rectangle underground space or along square
Axially opening processing is done in a certain end surface side to the shape underground space；
Step (1-2), respectively along protective case I 3, the outer peripheral surface of protective case II 5 and inner peripheral surface same position site of perforation, installation is pre-
Stress anchor bolt 7, and once pre-tightened；
Step (1-3), the side of protective case I 3 and protective case II 5 is open position along step (1-1), be utilized respectively filling material I 4,
It fills material II 6 and carries out protective case I 3 and the filling inside protective case II 5；
Step (1-4), after filling material I 4, the filling material II 6 inside protective case I 3 and protective case II 5 solidify, in its opening portion
Position side carries out plastering leveling, and is utilized respectively sealing cover and closes the side opening；
Step (1-5) carries out secondary preload to the prestressed bolt 7 of protective case I 3 and protective case II 5 respectively, applies prestressing force, makes it
Effective radial compression is generated respectively to protective case I 3 and internal filling material I 4, protective case II 5 and internal filling material II 6；
Step (1-6), repeat the above steps (1-1) ~ (1-5), completes multiple protective case lining cutting main units 1 and protective case lining cutting angle body
The production of unit 2；
Step 2, the on-site consolidation stage:
The intact multiple protective case lining cutting main units 1 of above-mentioned production and protective case lining cutting angle body unit 2 are moved into engineering site, if ground
Down space engineering uses shallow mining method, then after the excavation of rectangle underground space tunneling Rock And Soil 9, is directly carried out splicing phase
Even；If underground space engineering uses cut and cover tunneling, is spliced after the excavation of open cut Rock And Soil 9 and be connected, and carry out lining cutting
The backfill and compaction treatment of Rock And Soil 9 around structural outer；
Step 3, the grouting behind shaft or drift lining stage:
Step (3-1) utilizes the prestressed bolt 7(B of 1 outer ring of protective case lining cutting main unit, inner peripheral surface centre) it carries out
Lining cutting grouting behind shaft or drift lining fills gap between lining cutting outer peripheral surface and surrounding Rock And Soil 9, forms lining cutting grouting behind shaft or drift lining filling layer 10；
Step (3-2), after the completion of slip casting, the prestressed bolt 7(B at closing center position) charging valve 8；
Step 4, after lining cutting grouting behind shaft or drift lining grout cures, applying for this kind of liner structure of the present invention is completed.
Protective case I 3, protective case II 5 and the prestressed bolt 7 used in above-mentioned construction technology can mass directly produce, can be tight
Lattice control each section scantling specification, can strict control each section scantling specification, realize preferably underground space section
Molding effect, while when carrying out this kind of lining cutting and manufacturing, it is only necessary to it can be poured after assembly installation, it is mixed that conventional rebar can be solved
Solidifying soil liner structure is manufactured cumbersome large labor intensity caused by the artificial banding steel cage of process, technique, reinforcement fabrication and is tied up
It pricks precision and is difficult to the deficiencies of being precisely controlled, also can avoid the problems such as conventional rebar concrete lining needs mold to pour, can effectively drop
Low labor intensity of workers promotes the lining cutting quality of production.
This kind of assembled protective case lining cutting of the present invention the subway station of rectangular cross section, underground pipe gallery, underground utilities,
The engineering fields such as lower tunnel, can apply, while this kind of lining cutting had both been applicable to the cut and cover tunneling underground space, was equally applicable to
The shallow mining method underground space, therefore the present invention has the wider scope of application；Meanwhile this kind of assembled protective case lining of the present invention
It builds, provides a kind of effective support technology means for rectangle underground space engineering excavation, ensured opening for the rectangle underground space
Safety and stablization construction is dug, realizes the efficient utilization of the underground space, while also substantially increasing the construction of underground space engineering
Progress.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (10)
1. a kind of assembled protective case liner structure for the rectangle underground space, which is characterized in that including along rectangular cross section underground
Top of space, the respectively arranged protective case lining cutting main unit in bottom and both sides, the protective case lining cutting main unit is in rectangle
Four, cross-section underground space edge carries out splicing using protective case lining cutting angle body unit and is connected；Each protective case lining cutting main body
Unit includes protective case I, is filling material I inside the protective case I；Each protective case lining cutting angle body unit includes protective case
II, it is filling material II inside the protective case II；The outer peripheral surface side of the protective case I, protective case II and stratum Rock And Soil table
Face contact, towards inside the rectangle underground space, protective case I and the outer ring of protective case II, inner peripheral surface are evenly-spaced for inner peripheral surface side
Perforation equipped with multiple same positions passes through along outer ring, inner peripheral surface same position site of perforation and is equipped with prestressed bolt；Institute
The prestressed bolt stated is vertical with protective case I, the inner ring of protective case II, outer peripheral surface, and is applied with prestressing force, can be to protective case I and interior
Portion fills material I, protective case II and internal filling material II and generates radial compression, make prestressed bolt respectively with protective case I and filling
Composite bearing structure is collectively formed in material I, protective case II and filling material II, common to resist Rock And Soil pressure around the rectangle underground space
Power effect.
2. a kind of assembled protective case liner structure for the rectangle underground space as described in claim 1, which is characterized in that institute
The material of protective case I, protective case II and the prestressed bolt stated includes but is not limited to GFRP material, steel.
3. a kind of assembled protective case liner structure for the rectangle underground space as described in claim 1, which is characterized in that institute
The material of the filling material I, filling material II stated includes but is not limited to concrete, rubble+cement grout filling material.
4. a kind of assembled protective case liner structure for the rectangle underground space as described in claim 1, which is characterized in that institute
The strength of materials that the strength of materials of the protective case II, filling material II stated is respectively greater than protective case I, fills material I, to guarantee that protective case serves as a contrast
The integral strength for building angle body unit is greater than the integral strength of protective case lining cutting main unit.
5. a kind of assembled protective case liner structure for the rectangle underground space as described in claim 1, which is characterized in that position
The prestressed bolt body of rod in the outer ring of the protective case I of each protective case lining cutting main unit, inner peripheral surface centre is hollow form；
The prestressed bolt body of rod of the hollow form is equipped with charging valve in the inner peripheral surface side end close to protective case I.
6. a kind of assembled protective case liner structure for the rectangle underground space as described in claim 1, which is characterized in that institute
The connecting method of multiple protective case lining cutting main units for stating and protective case lining cutting angle body unit include but is not limited to be bolted, bolt
Formula connection, feather joint mode.
7. a kind of assembled protective case liner structure for the rectangle underground space as described in claim 1, which is characterized in that institute
The multiple protective case lining cutting main units and protective case lining cutting angle body unit stated are along rectangle underground space circumferential direction and axial splicing junction
Place is equipped with waterstop.
8. a kind of assembled protective case liner structure for the rectangle underground space as described in claim 1, which is characterized in that
The protective case I, protective case II it is axially a certain along the circumferential a certain end surface side of the rectangle underground space or along the rectangle underground space
End surface side is equipped with an opening；The opening cooperates with a sealing cover；The material of the sealing cover respectively with protective case I,
The material of protective case II is identical.
9. a kind of side of applying of assembled protective case liner structure for the rectangle underground space a method as claimed in any one of claims 1-8
Method, which comprises the following steps:
Step 1, prefabricated to apply the stage:
Step (1-1), according to the design of rectangle underground space cross dimensions, integrated carrying intensity and edge part bearing strength
It is required that processing and fabricating protective case I and protective case II, and respectively at it along the circumferential a certain end surface side of the rectangle underground space or along rectangle
Axially opening processing is done in a certain end surface side to the underground space；
Step (1-2), respectively along protective case I, the outer peripheral surface of protective case II and inner peripheral surface same position site of perforation, installation is answered in advance
Power anchor bolt, and once pre-tightened；
Step (1-3), the side of protective case I and protective case II opening position, is utilized respectively filling material I, filling along step (1-1)
Material II carries out the filling inside protective case I and protective case II；
Step (1-4), after filling material I, the filling material II inside protective case I and protective case II solidify, in its position side that is open
Plastering leveling is carried out, and is utilized respectively sealing cover and closes the side opening；
Step (1-5) carries out secondary preload to the prestressed bolt of protective case I and protective case II respectively, applies prestressing force, keeps its right
Protective case I and internal filling material I, protective case II and internal filling material II generate effective radial compression respectively；
Step (1-6), repeat the above steps (1-1) ~ (1-5), completes multiple protective case lining cutting main units and protective case lining cutting angle body
The production of unit；
Step 2, the on-site consolidation stage:
The intact multiple protective case lining cutting main units of above-mentioned production and protective case lining cutting angle body unit are moved into engineering site, if underground
Space engineering uses shallow mining method, then after rectangle underground space tunneling Rock And Soil excavation, is directly carried out splicing and be connected；
If underground space engineering uses cut and cover tunneling, is spliced after open cut Rock And Soil excavation and be connected, and carry out liner structure
The backfill and compaction treatment of exterior circumferential Rock And Soil；
Step 3, the grouting behind shaft or drift lining stage:
Step (3-1) carries out lining wall using the prestressed bolt in protective case lining cutting main unit outer ring, inner peripheral surface centre
Grouting behind shaft or drift lining fills gap between lining cutting outer peripheral surface and surrounding Rock And Soil；
Step (3-2), after the completion of slip casting, the charging valve of the prestressed bolt at closing center position；
Step 4, after lining cutting grouting behind shaft or drift lining grout cures, applying for this kind of liner structure of the present invention is completed.
10. a kind of assembled protective case liner structure for the rectangle underground space as claimed in claim 9 applies method,
Be characterized in that, the protective case I, protective case II production method include but is not limited to that the direct pouring molding of mold, welding be assembled, machine
Tool assembles mode.
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| CN201811232416.0A CN109184734B (en) | 2018-10-22 | 2018-10-22 | Assembled protective shell lining structure for rectangular underground space and construction method |
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| CN109184734B CN109184734B (en) | 2023-12-29 |
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