CN106988765A - High intensity grid steel frame and its manufacture method - Google Patents
High intensity grid steel frame and its manufacture method Download PDFInfo
- Publication number
- CN106988765A CN106988765A CN201611143255.9A CN201611143255A CN106988765A CN 106988765 A CN106988765 A CN 106988765A CN 201611143255 A CN201611143255 A CN 201611143255A CN 106988765 A CN106988765 A CN 106988765A
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- Prior art keywords
- muscle
- steel frame
- grid steel
- high intensity
- reinforcement
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 82
- 239000010959 steel Substances 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 title abstract description 25
- 210000003205 muscle Anatomy 0.000 claims abstract description 53
- 230000002787 reinforcement Effects 0.000 claims abstract description 39
- 238000003466 welding Methods 0.000 claims abstract description 18
- 229910001240 Maraging steel Inorganic materials 0.000 claims abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910001018 Cast iron Inorganic materials 0.000 claims abstract description 3
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 238000002360 preparation method Methods 0.000 claims 3
- 239000000203 mixture Substances 0.000 claims 1
- 239000011435 rock Substances 0.000 description 7
- 238000009434 installation Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process 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
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Architecture (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Wire Processing (AREA)
Abstract
The present invention provides a kind of high intensity lattice steel steelframe and its manufacture method.Wherein：The cage bar of high intensity grid steel frame is made using CRMG600 and its maraging steel muscle of above rank, 8 word muscle, row frame muscle (word muscle), reinforcement (stirrup) and U-shaped muscle are made using HTH800 and its maraging steel muscle of above rank, the carbon equivalent Ceq of high strength cast iron is not more than 0.55%, high intensity grid steel frame is formed by reinforcement welding, and equipped with connecting plate and fastening bolt, nut.
Description
Technical field：
The invention belongs to Tunnel Engineering construction technique field, and in particular to a kind of high intensity grid steel of Tunnel
Frame and its manufacture method.
Background technology：
Most of railway, vcehicular tunnel supporting both at home and abroad uses two kinds of modes of I-steel steelframe and grid steel frame, work at present
Word steel steelframe has that area of section is big, rigidity big, bearing capacity is stronger, the features such as can effectively controlling country rock initial deformation, but
There are be difficult with rock mass patch and it is close, accumulate that small, stress is more concentrated, list Pin weight is big with intrusion contact surface, transport and installation
The shortcomings of inconvenience in place.Grid steel frame and concrete surface product are big, bond effect is good, being capable of common eigenvector, common stress, no
Easily there is contraction fissure, voiding issues can be less prone in patch and palisades, rear as far as possible during installation, and list Pin is lightweight, system
Make it is simple, transport with it is easy for installation, the advantages of low cost, good economy performance.Its shortcoming is that integral rigidity is relatively low, at the beginning of resistance supporting
The deformability that phase larger surrouding rock stress is produced is poor.Current domestic and international three limbs steelframe cage bar is from ф 20- ф 25mm's
HRB400 grades of reinforcing bars, four limbs steelframe cage bar selects ф 22- ф 28mm HRB400 level reinforcement fabrications；8 word muscle or row frame muscle (word
Muscle) from ф 10- ф 14mm HRB400 level reinforcement fabrications；Reinforcement (stirrup) selects ф 8- ф 12mm diameter HRB335 reinforcing bars
Make；The connecting plate of steelframe is made using hot-rolled angle steel, and connecting bolt is connected using 5.6 grade bolts.
This grid steel frame is due to having selected the 335Mpa or 400Mpa grades of reinforcement fabrications compared with low yield strength, so bringing
Grid steel frame resistance to compression (drawing) power is low, integral rigidity is also low, and the resistance supporting deformability that in the initial stage of that larger surrouding rock stress is produced is poor
This shortcoming.
Currently used for the reinforcement property such as table 1 for making grid steel frame, numerical value is derived from GB/T1499.2-2007 standards.
Table 1 is currently used for the reinforcement property table for making grid steel frame
As high intensity, high ductility, high tenacity reinforcing bar are succeeded in developing, at the same the welding carbon equivalent of this reinforcing bar with
HRB400 is identical with HRB335, equally facilitates weld job.Grid steel frame is made we have suggested this high strength cast iron of use,
It can improve resistance to compression (drawing) power and effective rigidity of arch frame structure, substitute profile steel frame, and this high intensity grid steel frame is just simultaneously
It is provided with profile steel frame and the advantage of grid steel frame.
Table 2 is used for the reinforcement property table for making high intensity grid steel frame
Note：Reinforcement property numerical value is derived from YB/T4363-2014 and YB/T4425-2014 standards in table.
According to the substitutivity principle of the equivalent tension of steelframe reinforcing bar (resistance to compression) power and the equivalent stiffness substitutivity principle of steel frame construction, sheet
Invention makes the cage bar of high intensity grid steel frame using the maraging steel muscle using CRMG600 and its above rank, adopts
With HTH800 and its maraging steel muscle of above rank make 8 word muscle, row frame muscle (word muscle), reinforcement (stirrup) and
U-shaped muscle.This high intensity grid steel frame, profile steel frame can be substituted completely to be used for the preliminary bracing of V country rocks and substitutes using more
The regular tenacity grid steel frame of 400Mpa grades of reinforcement fabrications of thick specification is used for the preliminary bracing of IV grades of country rocks.Steel use is saved
Amount, facilitates installation, reduces construction costs.
In existing grid steel frame product, do not see using 600Mpa grades and its above intensity steel, using welding
The grid steel frame product that method makes, is not seen the grid steel frame made using 600Mpa grades and its above intensity steel yet and produced
Product.
The content of the invention：
It is an object of the present invention to provide a kind of high intensity grid steel frame, it has can effectively controlling for I-steel steelframe
The features such as country rock initial deformation processed, it may have the characteristics of grid steel frame later stage supporting intensity is big.List Pin is lightweight simultaneously, makes letter
It is single, transport and easy for installation, low cost, good economy performance.
In order to realize this target, the invention provides following technical scheme：
High intensity grid steel frame is made up of arch unit, abutment wall unit and inverted arch unit, each unit by cage bar, 8 word muscle or
Row frame muscle (word muscle), reinforcement (stirrup) and U-shaped muscle welding fabrication, two unit steelframe joint areas pass through angle cleat, spiral shell
Bolt, nut connection, two Pin steelframes are by connecting reinforcement welding.As shown in Figure 1.
The cage bar of three limb steelframes and four limbs steelframe is from the CRMG600 levels of ф 18-28mm diameters and its steel of above rank
Muscle makes.
8 word muscle or row frame muscle (word muscle) form overall on the inside of grid steel frame together with cage bar welding, its intensity, straight
Footpath and spacing determine the rigidity of grid steel frame, by HTH800 grades of ф 10-14mm diameters and its reinforcement fabrication of above rank, interval
60mm, anyhow interlaced arrangement.
Reinforcement (stirrup) is arranged on the outside of cage bar, and formation is overall together with cage bar welding, is risen and is reinforced and limitation steelframe change
Shape is acted on, from HTH800 grades of ф 6-8mm diameters and its reinforcement fabrication of above rank.As shown in Figure 2.
U-shaped muscle is arranged in two ends of each steelframe unit, forms overall together with cage bar welding, straight from ф 10-14mm
Footpath HTH800 grades and its reinforcement fabrication of above rank.
Connecting plate selects hot-rolled angle steel, forms overall together with cage bar welding, by 8.8 grade bolts and nut by two phases
Adjacent steelframe unit is connected.As shown in Figure 3.
Brief description of the drawings：
The arrangement legend of Fig. 1 high intensity grid steel frames
The arrangement legend of the word muscle of Fig. 28 and stirrup in grid steel frame
The arrangement legend of the U-shaped muscle of Fig. 3, angle splice bar and bolt and nut in grid steel frame
Embodiment：
Example 1：
High intensity grid steel frame is formed by following reinforcement welding, and steelframe is the square sections of 180 × 180mm.Using diameter
ф 20mm CRMG700 grade high-strength reinforcing bars, make four limbs grid steel frame cage bar；It is high-strength using diameter ф 12mm HTH800 levels
Spend the word muscle of reinforcement fabrication 8；Using diameter ф 8mm HTH800 grade high-strength reinforcement fabrication stirrups and using diameter ф 12mm's
The U-shaped muscle of HTH800 grade high-strength reinforcement fabrications.Connecting plate uses 10# hot-rolled angle steels, and using M20 screw bolt and nut, bolt is 8.8
Level.
Tunnel support test result shows that the high intensity grid steel frame can be met and substitutes wanting for work 20a I-steel steelframes
Ask.
Example 2：
High intensity grid steel frame is formed by following reinforcement welding, and steelframe is 220 × 184mm rectangular cross sections.Using diameter ф
22mm CRMG600 grade high-strength reinforcing bars, make four limbs grid steel frame cage bar；Using diameter ф 12mm HTH900 grade high-strengths
The word muscle of reinforcement fabrication 8；Using diameter ф 8mm HTH900 grade high-strength reinforcement fabrication stirrups and using diameter ф 12mm's
The U-shaped muscle of HTH900 grade high-strength reinforcement fabrications.Connecting plate uses 10# hot-rolled angle steels, and using M24 screw bolt and nut, bolt is 8.8
Level.
Tunnel support test result shows that the high intensity grid steel frame can be met and substitutes wanting for work 20b I-steel steelframes
Ask.
Example 3：
High intensity grid steel frame is formed by following reinforcement welding, and steelframe is 220 × 184mm rectangular cross sections.Using diameter ф
22mm CRMG700 grade high-strength reinforcing bars, make four limbs grid steel frame cage bar；Using diameter ф 12mm HTH900 grade high-strengths
The word muscle of reinforcement fabrication 8；Using diameter ф 8mm HTH900 grade high-strength reinforcement fabrication stirrups and using diameter ф 12mm's
The U-shaped muscle of HTH900 grade high-strength reinforcement fabrications.Connecting plate uses 10# hot-rolled angle steels, and using M24 screw bolt and nut, bolt is 8.8
Level.
Tunnel support test result shows that the high intensity grid steel frame can be met and substitutes wanting for work 22b I-steel steelframes
Ask.
Example 4：
High intensity grid steel frame is formed by following reinforcement welding, and steelframe is 212 × 176mm rectangular cross sections.Using diameter ф
18mm CRMG600 grade high-strength reinforcing bars, make four limbs grid steel frame cage bar；Using diameter ф 10mm HTH800 grade high-strengths
The word muscle of reinforcement fabrication 8；Using diameter ф 6mm HTH800 grade high-strength reinforcement fabrication stirrups and using diameter ф 12mm's
The U-shaped muscle of HTH800 grade high-strength reinforcement fabrications.Connecting plate uses 10# hot-rolled angle steels, using screw bolt and nut, and bolt is 8.8 grades.
Tunnel support test result shows that the high intensity grid steel frame can be met and substituted using diameter ф 22mm's
The four limbs grid steel frame requirement of HRB400 grades of reinforcement fabrications.
It should be appreciated by the person skilled in the art that without departing from the spirit or scope of the present invention, Ke Yi
Various modifications and changes are made in the present invention.Therefore, the invention is intended to cover the modifications and changes of the present invention, as long as these are changed
Fallen into change in the range of claims and its equivalent.
Claims (8)
1. a kind of high intensity grid steel frame, it is characterised in that：
The cage bar of high intensity grid steel frame is made using CRMG600 and its maraging steel muscle of above rank, 8 word muscle,
Row frame muscle (word muscle), reinforcement (stirrup) and U-shaped muscle are using HTH800 and its maraging steel muscle system of above rank
Make, the carbon equivalent Ceq of high strength cast iron is not more than 0.55%.
The a diameter of 18-28mm of high intensity grid steel frame cage bar, 8 word muscle, row frame muscle (word muscle), reinforcement (stirrup) and U-shaped muscle
A diameter of 6-14mm.
2. the high intensity grid steel frame according to claims 1, it is characterised in that：Grid steel frame has its cross section to be square type
Or the four limbs grid steel frame of square and the three limb grid steel frame three types that its cross section is triangular form.
3. the high intensity grid steel frame according to claims 1, it is characterised in that：The rebar surface used is the left-handed or right side
Rib Reinforced, left-handed or dextrorotation are revolved without one kind in longitudinal rib Rib Reinforced, light circular shape or two kinds.
4. the high intensity grid steel frame according to claims 1, it is characterised in that：Grid steel frame have by cage bar, 8 word muscle,
8 word muscle type grid steel frames of reinforcement (stirrup) and U-shaped muscle composition and by cage bar, row frame muscle (word muscle), reinforcement (stirrup)
Two kinds of the row frame muscle type grid steel frame constituted with U-shaped muscle.
5. the high intensity grid steel frame according to claims 1, it is characterised in that：The two ends of each unit of grid steel frame are each
It is welded with two or four U-shaped muscle.
6. the preparation method of high intensity grid steel frame, it is characterised in that：Use double between reinforcing bar and reinforcing bar and between reinforcing bar and angle steel
Face overlap joint welding method is made, and 8 word muscle are used to be made to welding method.
7. the preparation method of high intensity grid steel frame, it is characterised in that：The connecting plate of steelframe is made using hot-rolled angle steel, connects spiral shell
Bolt is connected using 8.8 grade bolts.
8. the preparation method of high intensity grid steel frame, it is characterised in that：Its welding procedure uses CO2 gas shielded arc weldings or manual welding
Bar welds a kind of technique in two kinds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611143255.9A CN106988765A (en) | 2016-12-13 | 2016-12-13 | High intensity grid steel frame and its manufacture method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611143255.9A CN106988765A (en) | 2016-12-13 | 2016-12-13 | High intensity grid steel frame and its manufacture method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106988765A true CN106988765A (en) | 2017-07-28 |
Family
ID=59414123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611143255.9A Pending CN106988765A (en) | 2016-12-13 | 2016-12-13 | High intensity grid steel frame and its manufacture method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106988765A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110318785A (en) * | 2019-08-01 | 2019-10-11 | 中铁二院成都勘察设计研究院有限责任公司 | A kind of steelframe and its construction method based on tunnel machine full face tunneling |
Citations (4)
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|---|---|---|---|---|
| CN202417531U (en) * | 2011-11-11 | 2012-09-05 | 中国一冶集团有限公司 | Netted steel frame for construction of shallow buried-tunneling method |
| CN203685217U (en) * | 2013-12-28 | 2014-07-02 | 中铁十二局集团第二工程有限公司 | Initial-stage supporting steel frame of large-section weak-surrounding-rock tunnel |
| CN104047619A (en) * | 2014-06-06 | 2014-09-17 | 中国水电顾问集团华东勘测设计研究院有限公司 | Steel grating lagging jack with adjustable size and construction method thereof |
| CN204941566U (en) * | 2015-08-10 | 2016-01-06 | 吉林铁道勘察设计院有限公司 | A kind of grid steel frame for reinforcing existing tunnel |
-
2016
- 2016-12-13 CN CN201611143255.9A patent/CN106988765A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202417531U (en) * | 2011-11-11 | 2012-09-05 | 中国一冶集团有限公司 | Netted steel frame for construction of shallow buried-tunneling method |
| CN203685217U (en) * | 2013-12-28 | 2014-07-02 | 中铁十二局集团第二工程有限公司 | Initial-stage supporting steel frame of large-section weak-surrounding-rock tunnel |
| CN104047619A (en) * | 2014-06-06 | 2014-09-17 | 中国水电顾问集团华东勘测设计研究院有限公司 | Steel grating lagging jack with adjustable size and construction method thereof |
| CN204941566U (en) * | 2015-08-10 | 2016-01-06 | 吉林铁道勘察设计院有限公司 | A kind of grid steel frame for reinforcing existing tunnel |
Non-Patent Citations (1)
| Title |
|---|
| 于富才等: "高强钢筋格栅混凝土复合支护特性的试验研究", 《土木工程学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110318785A (en) * | 2019-08-01 | 2019-10-11 | 中铁二院成都勘察设计研究院有限责任公司 | A kind of steelframe and its construction method based on tunnel machine full face tunneling |
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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: 20170728 |
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| RJ01 | Rejection of invention patent application after publication |