CN107503772A - A kind of first branch bearing capacity test method in tunnel - Google Patents
A kind of first branch bearing capacity test method in tunnel Download PDFInfo
- Publication number
- CN107503772A CN107503772A CN201710719789.XA CN201710719789A CN107503772A CN 107503772 A CN107503772 A CN 107503772A CN 201710719789 A CN201710719789 A CN 201710719789A CN 107503772 A CN107503772 A CN 107503772A
- Authority
- CN
- China
- Prior art keywords
- chassis
- branch
- tunnel
- extruded
- steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010998 test method Methods 0.000 title claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 30
- 239000010959 steel Substances 0.000 claims abstract description 30
- 238000012360 testing method Methods 0.000 claims abstract description 15
- 238000007493 shaping process Methods 0.000 claims abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- 238000004088 simulation Methods 0.000 abstract 1
- 241001669679 Eleotris Species 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007921 spray Substances 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
- E21D11/14—Lining predominantly with metal
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
Just branch bearing capacity test method belongs to constructing tunnel field in a kind of tunnel.Extruding chassis includes：More vertical H profile steels (6) are welded on dolly, traverse transverse direction H profile steel (5) in vertical H profile steel, 4 jack (4) is positioned in horizontal H profile steel (5), jack (4) top surface withstands steel jacking (3), and rubber blanket (2) is lined between steel jacking and first branch face.Each part of chassis, which will be extruded, using straddle truck is hung to underground；Each part of chassis will be extruded and be transported to pilot tunnel test section；Laid railway sleepers and rail in pilot tunnel inverted arch, each parts assembly shaping of chassis will be extruded；Squeeze test is carried out to vault, extruding force adds jack to realize by steel jacking；Extrude chassis dismounting, transport.It is contemplated that the stressing conditions of the lining assembling machine support boots of simulation two, when grasping using two lining assembling machines progress tunnel double-lining assembly, whether the extruding force that first branch structure is subject to meets needs of constructing, while understands the stress deformation situation of just branch, so as to the construction of follow-up two lining assembling machines.
Description
Technical field
The invention belongs to first branch bearing capacity is required during constructing tunnel, it is to be understood that one used during first branch stressing conditions
Kind method.
Background technology
With the rapidly propulsion of Urbanization in China, urban population sharp increase, in inner city, the population of work is high
Degree is concentrated, and city is slept in the outer suburbs generally as the auxiliary of inner city, and this results in the trip requirements for a large amount of long ranges occur.Cause
The top priority of this China's urban transportation is to construct metropolitan integrative traffic system, and subway be future city railway and highway system can not or
Scarce part, two lining construction usage assembly chassis are more efficient, the duration is shorter, construction cost is lower.
The two assembled chassis of lining need to use support stretcher for boot and shoe in first branch and apply vertical pretightning force simultaneously laterally to two bushing pipe pieces
Extruding force is provided to ensure that the section of jurisdiction of adjacent ring is closely connected, reaches waterproof requirement.But vertical pretightning force is excessive may cause just to prop up
Destruction, pretightning force is too small, can not provide enough extruding forces.Therefore need in advance to test first branch bearing capacity, find
Most suitable parameter.
The content of the invention
In order to solve the above problems, can be applied it is an object of the invention to provide a kind of to what first branch bearing capacity was tested
Work equipment.
The extruding chassis of the first branch bearing capacity in a kind of tunnel, it is characterised in that more vertical H profile steels (6) are welded on dolly, are erected
Traverse transverse direction H profile steel (5) on to H profile steel, 4 jack (4) are positioned in horizontal H profile steel (5), and jack (4) top surface is withstood
Steel jacking (3), rubber blanket (2) is lined between steel jacking and first branch face.
Using the test method of branch bearing capacity at the beginning of the tunnel of the extruding chassis, it is characterised in that comprise the following steps：
1) each part of chassis will be extruded using straddle truck and be hung to underground；
2) each part of chassis will be extruded and be transported to pilot tunnel test section；
3) laid railway sleepers and rail in pilot tunnel inverted arch, each parts assembly shaping of chassis will be extruded；
4) squeeze test is carried out to vault, extruding force adds jack to realize by steel jacking；
5) chassis dismounting, transport are extruded.
Brief description of the drawings
Fig. 1 is extruding trolley structure elevation.
Fig. 2 is extruding trolley structure profile.
Fig. 3 is extruding trolley structure top view.
The meaning that numeral represents in figure：
1st, first branch face
2nd, rubber blanket
3rd, steel jacking
4th, jack
5th, horizontal H profile steel
6th, vertical H profile steel
7th, dolly
8th, rail
9th, sleeper
Embodiment
Branch bearing capacity test instrument at the beginning of tunnel provided by the invention is illustrated with specific embodiment below in conjunction with the accompanying drawings.
Now illustrated by taking certain engineering test as an example：The test site is located in certain subway pioneer bore, it is contemplated that tunnel
First branch vault there may be space and the mixed leakiness situation of spray behind, therefore be carried out for this most unfavorable combination using chassis is extruded
Squeeze test：
1) vault absolute altitude initial value is measured；
2) in-site installation extruding chassis：Chassis each several part component, hydraulic oil pump will be extruded with electric three-wheel and other are supporting
Facility is transported to the scope of operation, small by extruding chassis each several part component assembly shaping in pilot tunnel inverted arch laying sleeper (9) and rail (8)
Car (7) is placed on rail (8)；8 vertical H profile steels (6) are welded on dolly, traverse transverse direction H profile steel (5) in vertical H profile steel, 4
Jack (4) is positioned in horizontal H profile steel (5), and jack (4) top surface withstands steel jacking (3), steel jacking (support boots) and first branch face
Between pad rubber blanket (2), avoid damaging just branch face (1).
3) chassis installation is extruded, after being placed into specified testing position, 4 jack (4) of chassis are uniformly applied
Pressure, so that rubber blanket (2) and first branch face (1) are closely connected above support boots, oil pump initial press 5MPa, and stable 2min, measure arch
The high shift value of top mark；
4) jack point level Four loads every grade and is loaded onto stable oil pressure 2min after design load, and determines vault absolute altitude position step by step
Shifting value, first branch face is observed step by step due to abnormal (deformation or crack)；
5) hierarchical loading design load such as following table：
6) squeeze test is carried out to the first branch vault of diverse location, and has obtained corresponding just branch deformation data.
Squeeze test has been carried out to the first branch vault of 2 diverse locations, and has obtained corresponding just branch deformation data.From examination
Testing in result can obtain to draw a conclusion：
1) just branch vault maximum distortion under the load for bearing 138t is 8mm to small pilot tunnel, is deformed in allowed band, far away
Reach structural failure degree；
2) the small pilot tunnel support boots that just branch vault converts under the load for bearing 138t are 0.55MPa to the pressure in first branch face,
Consider just branch face irregularity, support boots can not be completely closely connected with first branch face, and local pressure can be slightly larger than 0.55MPa；
3) just locally there is stone peeling phenomenon in branch face during hierarchical loading, and predominantly just branch face is uneven for analysis reason
It is suitable locally to have gap with support boots, cause load gradually increase during just branch surface stone be extruded peeling, can determine that institute's loading
Carry smaller on the influence of first branch structure.
Claims (2)
1. the extruding chassis of the first branch bearing capacity in a kind of tunnel, it is characterised in that more vertical H profile steels (6) are welded on dolly, vertically
Traverse transverse direction H profile steel (5) in H profile steel, 4 jack (4) are positioned in horizontal H profile steel (5), and jack (4) top surface withstands steel
Jacking (3), rubber blanket (2) is lined between steel jacking and first branch face.
2. the test method of the application first branch bearing capacity in tunnel of extruding chassis as claimed in claim 1, it is characterised in that including with
Lower step：
1) each part of chassis will be extruded using straddle truck and be hung to underground；
2) each part of chassis will be extruded and be transported to pilot tunnel test section；
3) laid railway sleepers and rail in pilot tunnel inverted arch, each parts assembly shaping of chassis will be extruded；
4) squeeze test is carried out to vault, extruding force adds jack to realize by steel jacking；
5) chassis dismounting, transport are extruded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710719789.XA CN107503772A (en) | 2017-08-21 | 2017-08-21 | A kind of first branch bearing capacity test method in tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710719789.XA CN107503772A (en) | 2017-08-21 | 2017-08-21 | A kind of first branch bearing capacity test method in tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107503772A true CN107503772A (en) | 2017-12-22 |
Family
ID=60691479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710719789.XA Pending CN107503772A (en) | 2017-08-21 | 2017-08-21 | A kind of first branch bearing capacity test method in tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107503772A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108316934A (en) * | 2018-04-18 | 2018-07-24 | 中铁二院工程集团有限责任公司 | A kind of shield machine of the assembled prefabricated secondary lining function of band |
| CN109682503A (en) * | 2019-01-11 | 2019-04-26 | 中铁十一局集团第四工程有限公司 | A kind of tunnel double-lining concrete pressure monitoring system and its application method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0960493A (en) * | 1995-08-24 | 1997-03-04 | Ohbayashi Corp | Base isolation structure for duplicate circular shield segment |
| CN102507347A (en) * | 2011-10-19 | 2012-06-20 | 宁波交通工程建设集团有限公司 | Load-carrying capacity test device of tunnel secondary-lining concrete structure |
| CN102866070A (en) * | 2012-08-16 | 2013-01-09 | 浙江交建路桥工程有限公司 | Loading method for bearing strength test for secondary lining concrete structure of tunnel |
| CN103883333A (en) * | 2014-03-07 | 2014-06-25 | 山东大学 | Large mechanical test system for combined adjustable constraint concrete arch frame |
| CN104895586A (en) * | 2015-05-27 | 2015-09-09 | 广西交通科学研究院 | Anti-disengaging tunnel secondary lining concrete pouring constructing method and formwork system |
| CN105386778A (en) * | 2015-12-24 | 2016-03-09 | 北京住总集团有限责任公司 | Tunnel underground excavation and lining construction trolley and tunnel underground excavation and lining construction method |
| CN105604576A (en) * | 2016-01-20 | 2016-05-25 | 中铁隆工程集团有限公司 | Soft rock stratum underground excavation large-section tunnel construction method and supporting system |
| CN106761819A (en) * | 2016-12-30 | 2017-05-31 | 中铁工程装备集团有限公司 | A kind of tunnel duct piece quick-assembling equipment and its assembling method |
| CN106930777A (en) * | 2017-04-14 | 2017-07-07 | 中铁六局集团有限公司 | The construction method of the lining of Bored Section of Metro main track assembled two |
-
2017
- 2017-08-21 CN CN201710719789.XA patent/CN107503772A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0960493A (en) * | 1995-08-24 | 1997-03-04 | Ohbayashi Corp | Base isolation structure for duplicate circular shield segment |
| CN102507347A (en) * | 2011-10-19 | 2012-06-20 | 宁波交通工程建设集团有限公司 | Load-carrying capacity test device of tunnel secondary-lining concrete structure |
| CN102866070A (en) * | 2012-08-16 | 2013-01-09 | 浙江交建路桥工程有限公司 | Loading method for bearing strength test for secondary lining concrete structure of tunnel |
| CN103883333A (en) * | 2014-03-07 | 2014-06-25 | 山东大学 | Large mechanical test system for combined adjustable constraint concrete arch frame |
| CN104895586A (en) * | 2015-05-27 | 2015-09-09 | 广西交通科学研究院 | Anti-disengaging tunnel secondary lining concrete pouring constructing method and formwork system |
| CN105386778A (en) * | 2015-12-24 | 2016-03-09 | 北京住总集团有限责任公司 | Tunnel underground excavation and lining construction trolley and tunnel underground excavation and lining construction method |
| CN105604576A (en) * | 2016-01-20 | 2016-05-25 | 中铁隆工程集团有限公司 | Soft rock stratum underground excavation large-section tunnel construction method and supporting system |
| CN106761819A (en) * | 2016-12-30 | 2017-05-31 | 中铁工程装备集团有限公司 | A kind of tunnel duct piece quick-assembling equipment and its assembling method |
| CN106930777A (en) * | 2017-04-14 | 2017-07-07 | 中铁六局集团有限公司 | The construction method of the lining of Bored Section of Metro main track assembled two |
Non-Patent Citations (1)
| Title |
|---|
| 陈馈等: "《国内外盾构法隧道施工实例》", 31 January 2016, 人民交通出版社股份有限公司 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108316934A (en) * | 2018-04-18 | 2018-07-24 | 中铁二院工程集团有限责任公司 | A kind of shield machine of the assembled prefabricated secondary lining function of band |
| CN108316934B (en) * | 2018-04-18 | 2024-01-23 | 中铁二院工程集团有限责任公司 | Shield tunneling machine with splicing and prefabricating secondary lining functions |
| CN109682503A (en) * | 2019-01-11 | 2019-04-26 | 中铁十一局集团第四工程有限公司 | A kind of tunnel double-lining concrete pressure monitoring system and its application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20171222 |
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| RJ01 | Rejection of invention patent application after publication |