CN208073498U - The hollow longeron of foundation carries domes without the lining cutting of inverted arch type and its drainage system - Google Patents
The hollow longeron of foundation carries domes without the lining cutting of inverted arch type and its drainage system Download PDFInfo
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- CN208073498U CN208073498U CN201721855166.7U CN201721855166U CN208073498U CN 208073498 U CN208073498 U CN 208073498U CN 201721855166 U CN201721855166 U CN 201721855166U CN 208073498 U CN208073498 U CN 208073498U
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- Lining And Supports For Tunnels (AREA)
Abstract
The hollow longeron of foundation carries domes without the lining cutting of inverted arch type and its drainage system, reduce or even eliminate effect of the underground water to tunnel-liner bottom structure, effectively solve the problems, such as karst or the regional tunnel inverted arch floating deformation of underground water development or tunnel bottom structure cracking destruction, it is ensured that the stabilization and safety of constructing tunnel and operation.The longeron consolidated therewith is arranged in arch wall secondary liner structure both sides abutment wall bottom, it is tunnel bottom structure between two side girders, longeron has longitudinal cavity, not only the bearing structure as arch wall preliminary bracing structure and arch wall secondary liner structure, but also as tunnel longitudinal drainage channel.Arch wall range drainage system includes circle draining blind pipe and abutment wall tapping pipe, circle draining blind pipe is laid between non-woven geotextile and splash guard along tunnel excavation direction interval and is introduced directly into longitudinal cavity in abutment wall lower part, country rock certain length is laid along tunnel excavation direction interval and stretched into abutment wall tapping pipe, with drainage abutment wall range underground water and pressure release.
Description
Technical field
The utility model is related to tunnel-liners and drainage system to construct, more particularly to one kind applying to underground water developmentally
The tunnel-liner and its waterproof and water drainage system construction of section, underground water by the irregular location of seasonal effect or karst area.
Background technology
Come into 21st century, railway construction in China high speed development, the above high standard double track railways of speed per hour 200km are built
It is more and more.Especially in Southwest Mountainous Areas, on the one hand, since lime rock stratum is widely distributed；On the other hand, to high-speed railway, line
By sweep, many factors such as big, topographic and geologic complicated condition are restricted road show line, lead to Karst Tunnel scale (quantity and length
Degree) it increases sharply.Since karst and karst water development have the characteristics that complexity, diversity and irregularities, karst tunnel of growing up
It is higher and higher that risk especially operations risks are built in road.
In recent years, suitable ten thousand, had occurred during Shanghai elder brother, the expensive Railway Tunnels operation such as wide several ballastless track beds deformations,
The water damages event such as inverted arch and filling protuberance, causes Railway Design, construction, construction and the great attention for runing each side.Through investigating,
Both wired water damage was broadly divided into two classes：
(1) inverted arch filling, which is floated, deforms.The construction joint that the construction in layer of its performance predominantly tunnel bottom structure is brought is in hydraulic pressure
Deformation, expansion under effect.
1. code requirement inverted arch should be separated with inverted arch filling and be poured.This engineering method forms construction joint between inverted arch and filling,
But underground water penetrates into inverted arch by inverted arch circular construction joint and fills bottom, and about 3~4m heads can cause filling to be floated.
2. in practice of construction, to prevent railway roadbed construction surface from being destroyed by Construction traffic, inverted arch filling often uses placement layer by layer
Mode, inverted arch filling surface layer (or regulating course) thickness about 0.2~0.4m of placing before railway roadbed construction, it is only necessary to 0.5~1m
High head can cause to fill surface layer floating, and then railway roadbed is caused to deform.
3. ballastless track bed is to road bed board and inverted arch fill surface using the connectionless way of contact, there are construction interfaces, right
It is more notable in the sensibility of tunnel bottom infiltration, often also there is " gap " lifting phenomenon and wear phenomenon, under the action of water, disease
Evil feature is particularly evident.It is very poor to foundation deformation with the huge stiffness difference of tunnel structure, deformation and track structure
Adaptability be further exacerbated by tunnel bottom water evil to the adverse effect and difficulty of governance of operation security.
(2) liner structure is mainly inverted arch strain cracking.
1. limited by vertical, the circumferential blind pipe and abutment wall drain hole drainability that are arranged in tunnel, after work drainage system by
Physical (silt, fine grained deposition are silted up), chemical type block (soluble matter is precipitated, concrete and slurry reaction residue condense)
Etc. reasons will all cause impeded drainage, hydraulic pressure change dramatically to lead to liner structure cracking failure.
2. the structures such as abutment wall longitudinal direction construction joint, circular construction joint, inverted arch bottom and waterproof weak link recurring structure deformation,
Cracking and waterproof failure；Spraying water, gushing silt etc. occur in local location.
3. level of ground water seasonal fluctuations cause lining cutting to bear " dynamic load " influence.In continuous rainfall or Severe rainstorm weather
Under the conditions of, level of ground water increases suddenly, and lining cutting bears higher hydraulic pressure.
The tunnel designed at present is largely to have inverted arch lining cutting.By taking one-tunnel two-tracks tunnel as an example, drainage system is with " tunnel
Draining in vivo " is Main Patterns, and underground water discharge path is：Country rock → preliminary bracing → draining blind pipe → lateral sulcus → transverse drainage
Pipe → Central drain, the i.e. water on tunnel structure periphery are permeated by preliminary bracing enters tunnel structure sheet via draining blind pipe ejectment
Central drain within body, it is final to be discharged outside hole.
Drainage system in tunnel body main drawback is that：
1. thering is the pressure release point of pressure underground water to be respectively positioned on to be arranged inside lining cutting agent structure, lining cutting agent structure is caused to bear
Hydrostatic pressing or hydrodynamic range are larger.
2. Central drain (or lateral sulcus) is set within tunnel structure, the periphery underground water of main ejectment arch wall range, tunnel
Inverted arch ponding below can not effective ejectment, once under continuous rainfall or rainstorm weather, under Local topography inverted arch crevice water or
Pipeline water because can not in time ejectment cause hydraulic pressure drastically to increase.Under the effect of high hydraulic pressure, cause tunnel bottom inverted arch cracking failure.
3. tunnel is in underground water seasonal fluctuation zone etc. and the close region of extraneous hydraulic connection, in continuous rainfall or heavy rain
It under weather, because of groundwater run off abruptly increase, is limited by abutment wall sluicing pore size and spacing, it is difficult in time by its ejectment to tunnel structure body
In interior gutter, drastically increased so as to cause level of ground water.Under the effect of high hydraulic pressure, Lining cracks is caused to destroy.
4. being needed by ballast bed structure, hole auxiliary structures and tunnel cross-section engineering economy being restricted, consider that construction is difficult
The cross-section of river degree of freedom of easy degree, hole medial sulcus or Central drain is little, and discharge capacity is limited, often causes water damage in hole.
5. since tunnel bottom is arc-shaped, excavate that control is more difficult, and it is big that tunnel bottom void slag cleans out difficulty completely, during operation
Due to tunnel bottom underground water can not ejectment, Train induced load repeated action in addition easily causes tunnel bottom the disasters such as to rise soil.
Therefore, optimize liner structure and drainage system, ensure that draining is unobstructed, reduce or even eliminate tunnel bottom water pressure, become drop
Low underground water development location, underground water are ensured operation peace by the irregular location of seasonal effect and karst area tunnel water damage risk
It is complete there is an urgent need to.
Utility model content
The technical problem to be solved by the utility model is to provide the hollow longerons of foundation to carry domes without inverted arch type
Lining cutting and its drainage system change tunnel bottom structure stress form by being transformed to conventional tunnel lining cutting tunnel bottom structure form
And drainage system, effect of the underground water to tunnel-liner bottom structure is reduced or even eliminated, karst or underground water hair are effectively solved
The problem of educating regional tunnel inverted arch floating deformation or tunnel bottom structure cracking destruction, it is ensured that the stabilization and safety of constructing tunnel and operation
Property.
Technical solution is as follows used by the utility model solves its technical problem：
The hollow longeron of the utility model foundation carries domes without at the beginning of the lining cutting of inverted arch type and its drainage system, including arch wall
Phase supporting construction, arch wall secondary liner structure and arch wall range waterproof layer, and including drainage system, it is characterized in that：The arch
The longeron consolidated therewith is arranged in wall secondary liner structure both sides abutment wall bottom, is tunnel bottom structure between two side girders；It is described
Longeron has longitudinal cavity, not only the bearing structure as arch wall preliminary bracing structure and arch wall secondary liner structure, but also as tunnel
Road longitudinal drainage channel；The drainage system includes arch wall range drainage system and tunnel bottom drainage system, arch wall range draining system
System includes circle draining blind pipe and abutment wall tapping pipe, and circle draining blind pipe is laid in non-woven geotextile along tunnel excavation direction interval
It is introduced directly into longitudinal cavity between splash guard and in abutment wall lower part, abutment wall tapping pipe is laid and stretched along tunnel excavation direction interval
Enter country rock certain length, with drainage abutment wall range underground water and pressure release.
The beneficial effects of the utility model are mainly reflected in following aspects：
1, tunnel bottom flexible structure is changeable, is suitable for the needs that a variety of geological conditions build tunnel.Overcome traditional lining
It is more convenient to excavate operation for the problems such as block form inverted arch foundation excavation curvature is difficult to control.It is inverted arch shape to be compared to traditional tunnel bottom
The liner structure of formula saves construction material, effectively reduces engineering construction investment.
2, traditional bent wall band inverted arch lining cutting is effectively prevented since underground water by inverted arch construction joint enters inverted arch and inverted arch
It is squeezed between blind and destroys obturator, track structure is avoided to destroy.
3, bearing structure of the hollow longeron as arch wall secondary lining is arranged in tunnel bottom both sides, and bending stiffness can be greatly improved.
Weak surrounding rock location is locally lain in for tunnel side wall bottom, arch wall supporting construction sedimentation and deformation can be effectively controlled, to karst area
Tunnel can effectively cross over the Karst Features (molten chamber, filling solution cavity, corroded breaking zone etc.) of certain size range.
4, longeron section uses hollow-core construction, can save bricklaying, internal cavities are as longitudinal drainage channel, cavity cross section ruler
It is very little to be adjusted according to dewatering needs.It may replace in traditional underground water development Tunnel Engineering design and sluice using the liner structure form
Hole, it is more than 10,000,000 that average every kilometer of Tunnel Engineering, which can save project cost,.
5, the drainage system of the utility model setting, reliability higher, drainability is stronger, can effective drainage arch wall range
And tunnel bottom underground water, avoid traditional liner structure because ground water discharge is unsmooth or heavy rain season groundwater run off abruptly increase leads to inverted arch after
Liner structure cracking destruction.
The utility model changes tunnel bottom structure stress form by being transformed to conventional tunnel lining cutting tunnel bottom structure form
And drainage system, effect of the underground water to tunnel-liner bottom structure is reduced or even eliminated, karst or underground water hair are effectively solved
The problem of educating regional tunnel inverted arch floating deformation or tunnel bottom structure cracking destruction, it is ensured that the stabilization and safety of constructing tunnel and operation
Property.
Description of the drawings
This specification includes following three width attached drawing：
Fig. 1 is that the hollow longeron of the utility model foundation carries domes without the lining cutting of inverted arch type and its drainage system embodiment
1 schematic diagram；
Fig. 2 is the enlarged drawing of the parts A in Fig. 1；
Fig. 3 is the sectional view of the I-I lines along Fig. 1；
Fig. 4 is that the hollow longeron of the utility model foundation carries domes without the lining cutting of inverted arch type and its drainage system embodiment
2 schematic diagram；
Fig. 5 is that the hollow longeron of the utility model foundation carries domes without the lining cutting of inverted arch type and its drainage system embodiment
3 schematic diagram；
Fig. 6 is that the hollow longeron of the utility model foundation carries domes without the lining cutting of inverted arch type and its drainage system embodiment
4 schematic diagram；
Fig. 7 is that the hollow longeron of the utility model foundation carries domes without the lining cutting of inverted arch type and its drainage system embodiment
5 schematic diagram；
Fig. 8 is the sectional view of the I-I lines along Fig. 7.
Component, toponym and corresponding label are shown in figure：Longitudinal cavity B, arch wall preliminary bracing structure 10, arch wall spray
Penetrate concrete layer 10a, arch wall steelframe 10b, arch wall system anchor bolt 10c, screed-coat 11, the second screed-coat 12, arch wall range waterproof
Layer 20, geotextiles 20a, splash guard 20b, circle draining blind pipe 31a, abutment wall tapping pipe 31b, tunnel bottom longitudinal direction french drain 32a, tunnel bottom are let out
Water pipe 32b, railway roadbed ponding tapping pipe 32d, drainage blanket 33, drainage blanket tapping pipe 33b, the vertical tapping pipe 34 in tunnel bottom, railway roadbed lateral sulcus
35a, side drain hole 35b, railway roadbed central trench 35c, central drain hole 35d, arch wall secondary liner structure 40, reinforced concrete floor
41, longeron 42, graded broken stone base 43, basic surface layer 44, basis surface layer tapping pipe 44a, subfoundation 45, combed construct
46, shop fixtures layer 47, lower part longitudinal direction cavity C, tunnel bottom excavation face F.
Specific implementation mode
The utility model is described in detail with reference to the accompanying drawings and examples.
The hollow longeron carrying domes of the utility model foundation are without the lining cutting of inverted arch type and its drainage system, packet referring to Fig.1
Arch wall preliminary bracing structure 10, arch wall secondary liner structure 40 and arch wall range waterproof layer 20 are included, and including drainage system 30.
The longeron 42 consolidated therewith is arranged in 40 both sides abutment wall bottom of the arch wall secondary liner structure, is tunnel bottom between two side girders 42
Portion's structure.Tunnel bottom flexible structure is changeable, is suitable for the needs that a variety of geological conditions build tunnel.Overcome traditional lining cutting shape
It is more convenient to excavate operation for the problems such as formula inverted arch foundation excavation curvature is difficult to control.It is inverted arch form to be compared to traditional tunnel bottom
Liner structure saves construction material, effectively reduces engineering construction investment.
Referring to Fig.1, the longeron 42 has longitudinal cavity B, is both used as arch wall preliminary bracing structure 10 and the secondary lining of arch wall
The bearing structure of structure 40 is built, and as tunnel longitudinal drainage channel.The longitudinal direction cross sections cavity B, can be used rectangle, eight sides
Shape and circle, sectional dimension can be adjusted according to draining and stress demand.
Bending stiffness is greatly improved in the setting of Fig. 1, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, longeron 42, for tunnel side wall bottom part
There are weak surrounding rock locations can effectively control arch wall supporting construction sedimentation and deformation, and a scale can be effectively crossed over to karst area tunnel
The Karst Features (molten chamber, filling solution cavity, corroded breaking zone etc.) of very little range.42 section of longeron uses hollow-core construction, can save trowel used for plastering
Work, longitudinal cavity B can be adjusted as longitudinal drainage channel, sectional dimension according to dewatering needs.Using the liner structure form
Drain cavern in traditional underground water development Tunnel Engineering design is may replace, average every kilometer of Tunnel Engineering can save project cost and be more than
10000000.
The drainage system includes arch wall range drainage system and tunnel bottom drainage system.With reference to Fig. 2, arch wall range draining system
System includes that circle draining blind pipe 31a and abutment wall tapping pipe 31b, circle draining blind pipe 31a are laid in along tunnel excavation direction interval
It is introduced directly into longitudinal cavity B between non-woven geotextile 20a and splash guard 20b and in abutment wall lower part, abutment wall tapping pipe 31b is along tunnel
It excavates direction interval and lays and stretch into country rock certain length, with drainage abutment wall range underground water and pressure release.
With reference to by the embodiment 1 shown in Fig. 1 and Fig. 3, the tunnel bottom structure is reinforced concrete floor 41, the reinforcing bar
The transverse ends of concrete floor 41 and the madial wall of two side girders 42 form Weak link.Tunnel bottom drainage system includes tunnel bottom
Longitudinal french drain 32a and tunnel bottom tapping pipe 32b, tunnel bottom longitudinal direction french drain 32a arrange that longeron is leaned in 41 or less both sides of reinforced concrete floor
At 42, to collect simultaneously drainage tunnel bottom underground water.Tunnel bottom tapping pipe 32b is laid in along tunnel excavation direction interval in longeron 42, and one
Tunnel bottom longitudinal direction french drain 32a is stretched at end, and the other end stretches into longitudinal cavity B, with ejectment tunnel bottom longitudinal direction french drain charge for remittance.
With reference to by the embodiment 2 shown in Fig. 4, the tunnel bottom structure is to fill the tunnel bottom between two side girders 42 to open
Graded broken stone base 43 on digging face.Tunnel bottom drainage system includes tunnel bottom longitudinal direction french drain 32a and tunnel bottom tapping pipe 32b, tunnel
Bottom longitudinal direction french drain 32a is arranged in 43 or less both sides of graded broken stone base at longeron 42, to collect simultaneously drainage tunnel bottom underground water；.
The tunnel bottom tapping pipe 32b is laid in along tunnel excavation direction interval in longeron 42, and tunnel bottom longitudinal direction french drain 32a is stretched into one end, separately
One end is stretched into longitudinal cavity B, with ejectment tunnel bottom longitudinal direction french drain charge for remittance.
With reference to by the embodiment 3 shown in Fig. 5, the tunnel bottom structure is tunnel bottom excavation face F, and part is removed by excavation face
It loosens rock and mends levelling formation using concrete is embedding.Tunnel bottom drainage system includes tunnel bottom tapping pipe 32b, tunnel bottom tapping pipe
32b is laid in along tunnel excavation direction interval in longeron 42, will be in the infiltration ejectment to longitudinal cavity B of tunnel bottom.
With reference to by the embodiment 4 shown in Fig. 6, the tunnel bottom structure is to be made of basic surface layer 44 and subfoundation 45
Change and fill out basis, the graded broken stone filling technology that thickness is not less than 40cm can be used in basic surface layer 44, and A, B group can be used in subfoundation 45
Filler fills.Tunnel bottom drainage system includes drainage blanket 33, drainage blanket tapping pipe 33a, basis surface layer tapping pipe 44a and railway roadbed
Ponding tapping pipe 32d.Drainage blanket 33 is located under subfoundation 45, and the medium coarse sand using thickness not less than 15cm fills, to converge
Collection tunnel bottom underground water simultaneously prevents underground water from washing away sapping tunnel bottom country rock；Drainage blanket tapping pipe 33a is along tunnel excavation direction interval cloth
It, will be in the underground water ejectment to longitudinal cavity B collected in drainage blanket 33 in longeron 42.Basic surface layer tapping pipe 44a is along tunnel
Road excavates direction interval and is laid in longeron 42, will be in possible ponding ejectment to longitudinal cavity B in basic surface layer 44.The road
Bed ponding tapping pipe 32d is laid in along tunnel excavation direction interval in longeron 42, will be in railway roadbed ponding ejectment to longitudinal cavity B.
With reference to by the embodiment 5 shown in Fig. 7 and Fig. 8, the tunnel bottom structure is combed construct 46 and is layed in it
The lower part of the shop fixtures layer 47 of upper surface, the combed construct 46 has laterally spaced lower part longitudinal direction cavity C as tunnel bottom underground
Water longitudinal drainage channel.Tunnel bottom drainage system includes the vertical tapping pipe 34 in tunnel bottom, and the vertical tapping pipe 32 in tunnel bottom is vertical along tunnel
It is laid in the lower part longitudinal direction cavity C of combed construct 46 to interval, tunnel base rock certain length is stretched into lower end, to drain tunnel
Bottom range has pressure underground water and pressure release, and port is away from 46 or less screed-coat of combed construct, 11 top surface certain distance thereon, to prevent
Tunnel bottom perennial draingage is to pouring into the vertical tapping pipe in tunnel bottom 34.Tunnel bottom drainage system further includes setting in railway roadbed lateral sulcus 35a, railway roadbed
Heart ditch 35c, side drain hole 35b and center drain hole 35d, railway roadbed lateral sulcus 35a and railway roadbed central trench 35c are respectively arranged in shop fixtures layer
47 both sides and center, to collect railway roadbed ponding.Side drain hole 35b is laid in along tunnel excavation direction interval in longeron 42, by road
35a charges for remittance are led in longitudinal cavity B in bed lateral sulcus.The center drain hole 35d is laid in shop fixtures along tunnel excavation direction interval
47 center of layer simultaneously vertically pass through combed construct 46, the lower part that railway roadbed central trench 35c charges for remittance are introduced to combed construct 46 to indulge
Into cavity C.
With reference to Fig. 2, the arch wall range waterproof layer 20 is located at arch wall preliminary bracing structure 10 and arch wall secondary liner structure
Between 40, include the splash guard 20b of the geotextiles 20a of internal layer and outer layer.Referring to Fig.1, Fig. 2, the arch wall preliminary bracing structure
10 include the arch wall shotcrete layer 10a of the covering arch wall country rock and arch wall system anchor bolt 10c along arch wall quincuncial arrangement.Institute
It states in arch wall shotcrete layer 10a and lays arch wall steelframe 10b, arch wall shotcrete layer 10a along tunnel excavation direction interval
Inside add bar-mat reinforcement.
Referring to Fig.1 and screed-coat 11,42 bottom of the bottom plate can be arranged in Fig. 7, the longeron 42,46 bottom of combed construct
Second screed-coat 12 can be set.
The above only explains through diagrams the hollow longeron carrying domes of the utility model foundation without inverted arch type lining cutting
And its some principles of drainage system, it is not intended to the utility model being confined to shown and the concrete structure and applicable model
In enclosing, therefore every corresponding modification for being possible to be utilized and equivalent, belong to the apllied patent model of the utility model
It encloses.
Claims (10)
1. the hollow longeron of foundation carries domes without the lining cutting of inverted arch type and its drainage system, including arch wall preliminary bracing structure
(10), arch wall secondary liner structure (40) and arch wall range waterproof layer (20), and including drainage system (30), it is characterized in that：
The longeron (42) consolidated therewith is arranged in arch wall secondary liner structure (40) the both sides abutment wall bottom, and two side girders are between (42)
Tunnel bottom structure；The longeron (42) has longitudinal cavity (B), is both used as arch wall preliminary bracing structure (10) and arch wall secondary
The bearing structure of liner structure (40), and as tunnel longitudinal drainage channel；The drainage system includes arch wall range draining system
System and tunnel bottom drainage system, arch wall range drainage system include circle draining blind pipe (31a) and abutment wall tapping pipe (31b), circumferential direction
Draining blind pipe (31a) is laid in along tunnel excavation direction interval between non-woven geotextile (20a) and splash guard (20b) and under abutment wall
Portion is introduced directly into longitudinal cavity (B), and abutment wall tapping pipe (31b) is laid along tunnel excavation direction interval and stretches into one fixed length of country rock
Degree, with drainage abutment wall range underground water and pressure release.
2. the hollow longeron carrying domes of foundation as described in claim 1 are without the lining cutting of inverted arch type and its drainage system, special
Sign is：The tunnel bottom structure is reinforced concrete floor (41), the transverse ends and two of the reinforced concrete floor (41)
The madial wall of side girder (42) forms Weak link；Tunnel bottom drainage system includes that tunnel bottom longitudinal direction french drain (32a) and tunnel bottom sluice
It manages (32b), tunnel bottom longitudinal direction french drain (32a) arranges reinforced concrete floor (41) following both sides at longeron (42), to collect simultaneously
Drainage tunnel bottom underground water；Tunnel bottom tapping pipe (32b) is laid in along tunnel excavation direction interval in longeron (42), and tunnel bottom is stretched into one end
Longitudinal french drain (32a), the other end stretches into longitudinal cavity (B), with ejectment tunnel bottom longitudinal direction french drain charge for remittance.
3. the hollow longeron carrying domes of foundation as described in claim 1 are without the lining cutting of inverted arch type and its drainage system, special
Sign is：The tunnel bottom structure is the graded broken stone base (43) filled between two side girders (42) in the excavation face of tunnel bottom；
Tunnel bottom drainage system includes tunnel bottom longitudinal direction french drain (32a) and tunnel bottom tapping pipe (32b), tunnel bottom longitudinal direction french drain (32a) arrangement
In graded broken stone base (43) following both sides at longeron (42), to collect simultaneously drainage tunnel bottom underground water；Tunnel bottom tapping pipe
(32b) is laid in along tunnel excavation direction interval in longeron (42), and tunnel bottom longitudinal direction french drain (32a) is stretched into one end, and the other end stretches into
In longitudinal cavity (B), with ejectment tunnel bottom longitudinal direction french drain charge for remittance.
4. the hollow longeron carrying domes of foundation as described in claim 1 are without the lining cutting of inverted arch type and its drainage system, special
Sign is：The tunnel bottom structure is tunnel bottom excavation face (F), and removing part by excavation face loosens rock and using the embedding benefit of concrete
Levelling formation；Tunnel bottom drainage system includes tunnel bottom tapping pipe (32b), and tunnel bottom tapping pipe (32b) is between tunnel excavation direction
It, will be in the infiltration ejectment to longitudinal cavity (B) of tunnel bottom every being laid in longeron (42).
5. the hollow longeron carrying domes of foundation as described in claim 1 are without the lining cutting of inverted arch type and its drainage system, special
Sign is：The tunnel bottom structure fills out basis for changing for being made of basic surface layer (44) and subfoundation (45), basic surface layer
(44) graded broken stone filling technology for using thickness to be not less than 40cm, subfoundation (45) are filled using A, B group filler；The tunnel bottom row
Water system includes drainage blanket (33), drainage blanket tapping pipe (33a), basic surface layer tapping pipe (44a) and railway roadbed ponding tapping pipe
(32d)；Drainage blanket (33) is located under subfoundation (45), and the medium coarse sand using thickness not less than 15cm fills, to collect tunnel
Bottom underground water simultaneously prevents underground water from washing away sapping tunnel bottom country rock；Drainage blanket tapping pipe (33a) is laid along tunnel excavation direction interval
It, will be in the underground water ejectment to longitudinal cavity (B) collected in drainage blanket (33) in longeron (42)；Basic surface layer tapping pipe
(44a) is laid in along tunnel excavation direction interval in longeron (42), by possible ponding ejectment in basic surface layer (44) to longitudinal direction
In cavity (B)；The railway roadbed ponding tapping pipe (32d) is laid in along tunnel excavation direction interval in longeron (42), and railway roadbed is accumulated
In water ejectment to longitudinal cavity (B).
6. the hollow longeron carrying domes of foundation as described in claim 1 are without the lining cutting of inverted arch type and its drainage system, special
Sign is：The tunnel bottom structure is the shop fixtures layer (47) of combed construct (46) and surface laid thereon, which constructs
There is laterally spaced lower part longitudinal direction cavity (C) to be used as tunnel bottom underground water longitudinal drainage channel for the lower part of body (46)；The tunnel bottom
Drainage system includes the vertical tapping pipe in tunnel bottom (34), and the vertical tapping pipe in tunnel bottom (32) is constructed along the longitudinally spaced combed that is laid in tunnel
In the lower part longitudinal direction cavity (C) of body (46), tunnel base rock certain length is stretched into lower end, has pressure underground water to drain tunnel bottom range
And pressure release, port is away from combed construct (46) following screed-coat (11) top surface certain distance thereon, to prevent tunnel bottom perennial draingage from arriving
It pours into the vertical tapping pipe in tunnel bottom (34).
7. the hollow longeron carrying domes of foundation as described in claim 1 are without the lining cutting of inverted arch type and its drainage system, special
Sign is：Tunnel bottom drainage system further include set railway roadbed lateral sulcus (35a), railway roadbed central trench (35c), side drain hole (35b) and in
Entreat drain hole (35d)；Railway roadbed lateral sulcus (35a) and railway roadbed central trench (35c) are respectively arranged in shop fixtures layer (47) both sides and center, with
Collect railway roadbed ponding；Side drain hole (35b) is laid in along tunnel excavation direction interval in longeron (42), will be in railway roadbed lateral sulcus
(35a) charge for remittance is led in longitudinal cavity (B)；The center drain hole (35d) is laid in shop fixtures layer along tunnel excavation direction interval
(47) center and combed construct (46) is vertically passed through to introduce railway roadbed central trench (35c) charge for remittance under combed construct (46)
In portion longitudinal direction cavity (C).
8. the hollow longeron of foundation as described in claim 1 carries domes without the lining cutting of inverted arch type and its drainage system, feature
It is：The arch wall range waterproof layer (20) is located between arch wall preliminary bracing structure (10) and arch wall secondary liner structure (40),
The splash guard (20b) of geotextiles (20a) and outer layer including internal layer.
9. the hollow longeron of foundation as described in claim 1 carries domes without the lining cutting of inverted arch type and its drainage system, feature
It is：Longeron (42) the bottom setting screed-coat (11).
10. the hollow longeron of foundation as described in claim 1 carries domes without the lining cutting of inverted arch type and its drainage system, feature
It is：Described longitudinal direction cross section cavity (B) is rectangle, octagon or circle, and sectional dimension is adjusted according to draining and stress demand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721855166.7U CN208073498U (en) | 2017-12-27 | 2017-12-27 | The hollow longeron of foundation carries domes without the lining cutting of inverted arch type and its drainage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721855166.7U CN208073498U (en) | 2017-12-27 | 2017-12-27 | The hollow longeron of foundation carries domes without the lining cutting of inverted arch type and its drainage system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208073498U true CN208073498U (en) | 2018-11-09 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721855166.7U Withdrawn - After Issue CN208073498U (en) | 2017-12-27 | 2017-12-27 | The hollow longeron of foundation carries domes without the lining cutting of inverted arch type and its drainage system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208073498U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107905811A (en) * | 2017-12-27 | 2018-04-13 | 中铁二院工程集团有限责任公司 | The hollow longeron of foundation carries domes without the lining cutting of inverted arch type and its drainage system |
| CN111287794A (en) * | 2020-04-07 | 2020-06-16 | 中铁二院成都勘察设计研究院有限责任公司 | A karst tunnel groundwater open drainage structure and method |
| CN112253172A (en) * | 2020-10-16 | 2021-01-22 | 中铁第四勘察设计院集团有限公司 | Tunnel bottom lining structure with tie beam and construction method thereof |
-
2017
- 2017-12-27 CN CN201721855166.7U patent/CN208073498U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107905811A (en) * | 2017-12-27 | 2018-04-13 | 中铁二院工程集团有限责任公司 | The hollow longeron of foundation carries domes without the lining cutting of inverted arch type and its drainage system |
| CN107905811B (en) * | 2017-12-27 | 2024-01-19 | 中铁二院工程集团有限责任公司 | Inverted arch-free lining of foundation hollow longitudinal beam bearing arch structure |
| CN111287794A (en) * | 2020-04-07 | 2020-06-16 | 中铁二院成都勘察设计研究院有限责任公司 | A karst tunnel groundwater open drainage structure and method |
| CN112253172A (en) * | 2020-10-16 | 2021-01-22 | 中铁第四勘察设计院集团有限公司 | Tunnel bottom lining structure with tie beam and construction method thereof |
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