CN108952771A - Existing rigid structures zero are worn under one kind deforms construction method - Google Patents
Existing rigid structures zero are worn under one kind deforms construction method Download PDFInfo
- Publication number
- CN108952771A CN108952771A CN201710388603.7A CN201710388603A CN108952771A CN 108952771 A CN108952771 A CN 108952771A CN 201710388603 A CN201710388603 A CN 201710388603A CN 108952771 A CN108952771 A CN 108952771A
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- Prior art keywords
- zero
- excavation
- under
- deformation
- rigid structures
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- 238000010276 construction Methods 0.000 title claims abstract description 40
- 238000009412 basement excavation Methods 0.000 claims abstract description 52
- 238000007569 slipcasting Methods 0.000 claims abstract description 24
- 238000012544 monitoring process Methods 0.000 claims abstract description 14
- 238000002347 injection Methods 0.000 claims abstract description 6
- 239000007924 injection Substances 0.000 claims abstract description 6
- 239000002689 soil Substances 0.000 claims description 24
- 230000003014 reinforcing effect Effects 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 230000009977 dual effect Effects 0.000 claims description 5
- 239000002002 slurry Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 238000007363 ring formation reaction Methods 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- 241001074085 Scophthalmus aquosus Species 0.000 claims 1
- 229920002472 Starch Polymers 0.000 claims 1
- 229910052742 iron Inorganic materials 0.000 claims 1
- 235000019698 starch Nutrition 0.000 claims 1
- 239000008107 starch Substances 0.000 claims 1
- 235000013399 edible fruits Nutrition 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
Existing rigid structures zero are worn under one kind deforms construction method, it is characterized by: wearing existing rigid structures zero under described deforms construction method, under wear before the external slip casting of excavation, under wear section excavation internal injection realize " earlier zero deformation of excavation '; automation deformation monitoring is passed through using jack top power in excavation; pass through jack top power and realize " compensation jacking " in excavating; realize zero deformation in excavating; its after-pouring secondary lining realizes the construction for tightly cutting existing rigid structures " zero deformation ".Advantages of the present invention: wearing existing rigid structures zero and deform construction method under of the present invention, realizes the control target of zero deformation using slip casting plus step excavation and jack that compensation deformation is arranged.Construction is simple, it is easy to operate, the safety for wearing construction is improved down, can be used in each engineering construction.
Description
Technical field
The present invention relates to
Background technique
Currently, both wired construction work closely has a large capacity and a wide range, how to realize down and wear " zero of existing rigid building in construction
Deformation " is the critical issue for needing to solve in construction.
Summary of the invention
The purpose of the present invention is realizing zero deformation of rigid building, using slip casting plus step excavation and compensation deformation is set
Jack realize control target, provided and worn existing rigid structures zero deformation construction method under one kind.
The present invention provides wear existing rigid structures zero under one kind to deform construction method, it is characterised in that: under described
Wear existing rigid structures zero and deform construction method, under wear before the external slip casting of excavation, under wear the excavation internal injection of section and realize
" earlier zero deformation of excavation ', pass through jack top power by automation deformation monitoring using jack top power and realize in excavation
" compensation jacking " in excavation, realizes zero deformation in excavating, after-pouring secondary lining, realizes and tightly cuts existing rigidity and construct
The construction of object " zero deformation ".
Before wearing under, the soil body carries out grouting and reinforcing within the scope of 2 meters outside outline excavation；Just branch is all made of profile steel frame, indulges
It is 0.5m to spacing；Just branch is with a thickness of 35cm, two lining tops, base plate thickness 80cm, side wall thicknesses 70cm；
Under wear the deep hole grouting of section；Under wear building up station construction before, first to the soil needed below building up station in reinforcing scope
Body carries out advanced deep hole grouting reinforcing, and deep hole grouting carries out in two times in the longitudinal direction, reinforces 16m, the overlap joint of slip casting twice for the first time
2m, range of grouting be tunnel excavation line within the scope of and outer 2m within the scope of soil layer；Deep hole grouting uses cement-silicate dual slurry, just
Pressure is 0.5~0.75MPa, final pressure 1.0MPa；After the injected hole of one slip casting section has all been infused, bores 2~3 holes and slip casting is imitated
Fruit carries out coring inspection, it is desirable that test specimen soil body unconfined compressive strength is not less than 0.8MPa.
Under wear section tunnel excavation using 4 pilot tunnel step excavations, each pilot tunnel is using performed core-soil sidesteps excavation；Just branch
It is used uniformly profile steel frame, along excavation one row's 120t self-locking jack of longitudinal every 1.5 meters of settings；The side wall at station is worn under
One row's jack is set with reversed beam position；After preliminary bracing closing cyclization, apply and just push up power, makes just to prop up and both wired base tops
Tightly.
The automatic monitoring implemented in work progress is implemented to give application jack top power according to Deformation Monitoring, it is ensured that
" zero deformation " of work progress existing structure.
Two linings are performed after first Zhi Guantong immediately, jack is locked, guarantees that jack plays always before two linings reach intensity
Effect；Side wall false stull is removed paragraph by paragraph, sets up support replacement in time after concrete reaches intensity.
Advantages of the present invention:
Existing rigid structures zero are worn under of the present invention and deform construction method, using slip casting plus step excavation and are arranged
The jack of compensation deformation realizes the control target of zero deformation.Construction is simple, it is easy to operate, it improves down and wears construction
Safety can be used in each engineering construction.
Specific embodiment
Embodiment 1
It present embodiments provides and wears the existing deformation of rigid structures zero construction method under one kind, it is characterised in that: is described
Under wear existing rigid structures zero and deform construction method, under wear before the external slip casting of excavation, under wear section excavation internal injection it is real
Existing " earlier zero deformation of excavation ', it is real to be passed through by automation deformation monitoring using jack top power for jack top power in excavation
" compensation jacking " in now excavating, realizes zero deformation in excavating, and after-pouring secondary lining realizes and tightly cuts existing rigid structure
Build the construction of object " zero deformation ".
Before wearing under, the soil body carries out grouting and reinforcing within the scope of 2 meters outside outline excavation；Just branch is all made of profile steel frame, indulges
It is 0.5m to spacing；Just branch is with a thickness of 35cm, two lining tops, base plate thickness 80cm, side wall thicknesses 70cm；
Under wear the deep hole grouting of section；Under wear building up station construction before, first to the soil needed below building up station in reinforcing scope
Body carries out advanced deep hole grouting reinforcing, and deep hole grouting carries out in two times in the longitudinal direction, reinforces 16m, the overlap joint of slip casting twice for the first time
2m, range of grouting be tunnel excavation line within the scope of and outer 2m within the scope of soil layer；Deep hole grouting uses cement-silicate dual slurry, just
Pressure is 0.5~0.75MPa, final pressure 1.0MPa；After the injected hole of one slip casting section has all been infused, bores 2~3 holes and slip casting is imitated
Fruit carries out coring inspection, it is desirable that test specimen soil body unconfined compressive strength is not less than 0.8MPa.
Under wear section tunnel excavation using 4 pilot tunnel step excavations, each pilot tunnel is using performed core-soil sidesteps excavation；Just branch
It is used uniformly profile steel frame, along excavation one row's 120t self-locking jack of longitudinal every 1.5 meters of settings；The side wall at station is worn under
One row's jack is set with reversed beam position；After preliminary bracing closing cyclization, apply and just push up power, makes just to prop up and both wired base tops
Tightly.
The automatic monitoring implemented in work progress is implemented to give application jack top power according to Deformation Monitoring, it is ensured that
" zero deformation " of work progress existing structure.
Two linings are performed after first Zhi Guantong immediately, jack is locked, guarantees that jack plays always before two linings reach intensity
Effect；Side wall false stull is removed paragraph by paragraph, sets up support replacement in time after concrete reaches intensity.
Embodiment 2
It present embodiments provides and wears the existing deformation of rigid structures zero construction method under one kind, it is characterised in that: is described
Under wear existing rigid structures zero and deform construction method, under wear before the external slip casting of excavation, under wear section excavation internal injection it is real
Existing " earlier zero deformation of excavation ', it is real to be passed through by automation deformation monitoring using jack top power for jack top power in excavation
" compensation jacking " in now excavating, realizes zero deformation in excavating, and after-pouring secondary lining realizes and tightly cuts existing rigid structure
Build the construction of object " zero deformation ".
Before wearing under, the soil body carries out grouting and reinforcing within the scope of 2 meters outside outline excavation；Just branch is all made of profile steel frame, indulges
It is 0.5m to spacing；Just branch is with a thickness of 35cm, two lining tops, base plate thickness 80cm, side wall thicknesses 70cm；
Under wear the deep hole grouting of section；Under wear building up station construction before, first to the soil needed below building up station in reinforcing scope
Body carries out advanced deep hole grouting reinforcing, and deep hole grouting carries out in two times in the longitudinal direction, reinforces 16m, the overlap joint of slip casting twice for the first time
2m, range of grouting be tunnel excavation line within the scope of and outer 2m within the scope of soil layer；Deep hole grouting uses cement-silicate dual slurry, just
Pressure is 0.5~0.75MPa, final pressure 1.0MPa；After the injected hole of one slip casting section has all been infused, bores 2~3 holes and slip casting is imitated
Fruit carries out coring inspection, it is desirable that test specimen soil body unconfined compressive strength is not less than 0.8MPa.
The automatic monitoring implemented in work progress is implemented to give application jack top power according to Deformation Monitoring, it is ensured that
" zero deformation " of work progress existing structure.
Two linings are performed after first Zhi Guantong immediately, jack is locked, guarantees that jack plays always before two linings reach intensity
Effect；Side wall false stull is removed paragraph by paragraph, sets up support replacement in time after concrete reaches intensity.
Embodiment 3
It present embodiments provides and wears the existing deformation of rigid structures zero construction method under one kind, it is characterised in that: is described
Under wear existing rigid structures zero and deform construction method, under wear before the external slip casting of excavation, under wear section excavation internal injection it is real
Existing " earlier zero deformation of excavation ', it is real to be passed through by automation deformation monitoring using jack top power for jack top power in excavation
" compensation jacking " in now excavating, realizes zero deformation in excavating, and after-pouring secondary lining realizes and tightly cuts existing rigid structure
Build the construction of object " zero deformation ".
Before wearing under, the soil body carries out grouting and reinforcing within the scope of 2 meters outside outline excavation；Just branch is all made of profile steel frame, indulges
It is 0.5m to spacing；Just branch is with a thickness of 35cm, two lining tops, base plate thickness 80cm, side wall thicknesses 70cm；
Under wear the deep hole grouting of section；Under wear building up station construction before, first to the soil needed below building up station in reinforcing scope
Body carries out advanced deep hole grouting reinforcing, and deep hole grouting carries out in two times in the longitudinal direction, reinforces 16m, the overlap joint of slip casting twice for the first time
2m, range of grouting be tunnel excavation line within the scope of and outer 2m within the scope of soil layer；Deep hole grouting uses cement-silicate dual slurry, just
Pressure is 0.5~0.75MPa, final pressure 1.0MPa；After the injected hole of one slip casting section has all been infused, bores 2~3 holes and slip casting is imitated
Fruit carries out coring inspection, it is desirable that test specimen soil body unconfined compressive strength is not less than 0.8MPa.
Under wear section tunnel excavation using 4 pilot tunnel step excavations, each pilot tunnel is using performed core-soil sidesteps excavation；Just branch
It is used uniformly profile steel frame, along excavation one row's 120t self-locking jack of longitudinal every 1.5 meters of settings；Worn under station side wall and
Row's jack is arranged in reversed beam position；After preliminary bracing closing cyclization, apply and just push up power, makes just to prop up tight with both wired base tops.
Claims (5)
1. wearing existing rigid structures zero under one kind deforms construction method, it is characterised in that: wear existing rigidity under described and construct
Object zero deforms construction method, under wear before the external slip casting of excavation, under wear the excavation internal injection of section and realize that " earlier the zero of excavation becomes
Shape ', pass through jack top power by automation deformation monitoring using jack top power and realize " the compensation top in excavating in excavation
Rise ", realize zero deformation in excavating, after-pouring secondary lining realizes and tightly cuts applying for existing rigid structures " zero deformation "
Work.
2. wearing existing rigid structures zero under described in accordance with the claim 1 deforms construction method, it is characterised in that: wear it under
Before, the soil body carries out grouting and reinforcing within the scope of 2 meters outside outline excavation；Just branch is all made of profile steel frame, longitudinal pitch 0.5m；Just branch
With a thickness of 35cm, two lining tops, base plate thickness 80cm, side wall thicknesses 70cm；
Under wear the deep hole grouting of section；Under wear building up station construction before, first to the soil body needed below building up station in reinforcing scope into
Row advanced deep hole grouting is reinforced, and deep hole grouting carries out in two times in the longitudinal direction, reinforces 16m for the first time, and slip casting twice overlaps 2m, note
Starch range be tunnel excavation line within the scope of and outer 2m within the scope of soil layer；Deep hole grouting uses cement-silicate dual slurry, and first pressing is
0.5~0.75MPa, final pressure 1.0MPa；After the injected hole of one slip casting section all infuse, 2~3 holes of brill to slip casting effect into
Row coring is examined, it is desirable that test specimen soil body unconfined compressive strength is not less than 0.8MPa.
3. wearing existing rigid structures zero under described in accordance with the claim 1 deforms construction method, it is characterised in that: under wear a section tunnel
Road, which excavates, uses 4 pilot tunnel step excavations, and each pilot tunnel is excavated using performed core-soil sidesteps；Just branch is used uniformly fashioned iron steel
Frame, along excavation one row's 120t self-locking jack of longitudinal every 1.5 meters of settings；Side wall and the reversed beam position setting one at station are worn under
Arrange jack；After preliminary bracing closing cyclization, apply and just push up power, makes just to prop up tight with both wired base tops.
4. wearing existing rigid structures zero under described in accordance with the claim 1 deforms construction method, it is characterised in that: work progress
The middle automatic monitoring implemented is implemented to give application jack top power according to Deformation Monitoring, it is ensured that work progress existing structure
" zero deformation ".
5. wearing existing rigid structures zero under described in accordance with the claim 1 deforms construction method, it is characterised in that: first Zhi Guantong
Perform two linings immediately afterwards, jack is locked, guarantees that jack plays a role always before two linings reach intensity；Side wall is removed paragraph by paragraph
False stull sets up support replacement after concrete reaches intensity in time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710388603.7A CN108952771A (en) | 2017-05-27 | 2017-05-27 | Existing rigid structures zero are worn under one kind deforms construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710388603.7A CN108952771A (en) | 2017-05-27 | 2017-05-27 | Existing rigid structures zero are worn under one kind deforms construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108952771A true CN108952771A (en) | 2018-12-07 |
Family
ID=64494587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710388603.7A Pending CN108952771A (en) | 2017-05-27 | 2017-05-27 | Existing rigid structures zero are worn under one kind deforms construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108952771A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3968655A (en) * | 1973-07-13 | 1976-07-13 | Mcglothlin William K | Method of reinforcing tunnels before excavation |
| US4084384A (en) * | 1976-09-13 | 1978-04-18 | Shosei Serata | Advanced slot stress control method of underground excavation |
| CN101126318A (en) * | 2007-09-28 | 2008-02-20 | 中铁二局股份有限公司 | Shield construction method for three-line parallel under-passing trunk railway tunnel |
| CN101131090A (en) * | 2007-10-09 | 2008-02-27 | 中铁二局股份有限公司 | Construction method for shallow soil-covered river bed under shield tunnel |
| CN101858222A (en) * | 2010-05-25 | 2010-10-13 | 北京城建设计研究总院有限责任公司 | Method for controlling deformation in zero-distance tunneling of new tunnel under existing subway construction |
| CN106050245A (en) * | 2016-08-03 | 2016-10-26 | 中铁第勘察设计院集团有限公司 | Supporting structure for zero distance underneath pass of existing station of rectangular tunnel section and construction method |
-
2017
- 2017-05-27 CN CN201710388603.7A patent/CN108952771A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3968655A (en) * | 1973-07-13 | 1976-07-13 | Mcglothlin William K | Method of reinforcing tunnels before excavation |
| US4084384A (en) * | 1976-09-13 | 1978-04-18 | Shosei Serata | Advanced slot stress control method of underground excavation |
| CN101126318A (en) * | 2007-09-28 | 2008-02-20 | 中铁二局股份有限公司 | Shield construction method for three-line parallel under-passing trunk railway tunnel |
| CN101131090A (en) * | 2007-10-09 | 2008-02-27 | 中铁二局股份有限公司 | Construction method for shallow soil-covered river bed under shield tunnel |
| CN101858222A (en) * | 2010-05-25 | 2010-10-13 | 北京城建设计研究总院有限责任公司 | Method for controlling deformation in zero-distance tunneling of new tunnel under existing subway construction |
| CN106050245A (en) * | 2016-08-03 | 2016-10-26 | 中铁第勘察设计院集团有限公司 | Supporting structure for zero distance underneath pass of existing station of rectangular tunnel section and construction method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181207 |
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| RJ01 | Rejection of invention patent application after publication |