CN103790600A - Tunnel supporting H-section steel and method for manufacturing same - Google Patents
Tunnel supporting H-section steel and method for manufacturing same Download PDFInfo
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- CN103790600A CN103790600A CN201210430673.1A CN201210430673A CN103790600A CN 103790600 A CN103790600 A CN 103790600A CN 201210430673 A CN201210430673 A CN 201210430673A CN 103790600 A CN103790600 A CN 103790600A
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Abstract
The invention discloses tunnel supporting H-section steel which comprises an H-section steel body. The tunnel supporting H-section steel is characterized in that the H-section steel body is of a split type structure and comprises an upper portion and a lower portion, and through holes are formed in joints of the upper portion and the lower portion and are filled with sprayed concrete. A method for manufacturing the tunnel supporting H-section steel includes steps of transversely dividing the middle of H-section steel into the upper section and the lower section along a cutting line, respectively forming grooves in the joints of the upper portion and the lower portion by means of cutting and respectively forming protrusions meshed with the grooves at the joints of the upper portion and the lower portion by means of cutting; leftwards or rightwards shifting the upper portion, then connecting the upper portion with the lower portion, connecting the grooves of the upper portion with the grooves of the lower portion to form the through holes, enabling the protrusions of the upper portion to be butted to the protrusions of the lower portion and welding the protrusions of the upper portion with the protrusions of the lower portion; mounting the H-section steel, then automatically filling the sprayed concrete through holes with the sprayed concrete by means of spraying, then processing the through holes filled with the sprayed concrete, combining the through holes with one another, and then enabling sprayed concrete to wrap the H-section steel to form the tunnel supporting H-section steel. The tunnel supporting H-section steel and the method have the advantages that the H-section steel is good in stability, conventional damage such as annular cracking can be prevented, the integral height of the H-section steel can be increased, the integral rigidity of a combination can be improved, and the manufacturing cost can be saved.
Description
Technical field
The present invention relates to a kind of tunnel construction field, be specifically related to a kind of tunnel support i iron and manufacture method thereof.
Background technology
At present, i iron is a kind of conventional constructional materials, and its English steelbeam by name, also can be described as girder steel, is that a kind of section configuration is I-shaped shaped steel.I iron is divided into three kinds, common i iron, lightweight I-beam and H type i iron, is widely used in the industries such as various building structure, bridge, vehicle, support, machinery.Common i iron, the lightweight I-beam edge of a wing are that variable cross-section leans on web portion thick, outer thin, common I-shaped lightweight I-beam is because sectional dimension is all relatively high, narrower, therefore the moment of inertia of two main sleeves of pair cross-section differs larger, therefore, general only can being used directly in is subject to curved member or formed lattice primary structure member in its web plane, to axis compression member or also having bending member all should not adopt perpendicular to web plane.The edge of a wing of the i iron such as H shaped steel: HW, HM, HN, HEA, HEB, HEM is uniform section, H shaped steel belongs to high-efficiency and economic and cuts out face section bar, because cross sectional shape is reasonable, can make just now higher performance usefulness, improve supporting capacity, what be different from common i iron is that the edge of a wing of H shaped steel is widened, and inside and outside surface is normally parallel, can be convenient to like this be connected with other member with high-strength bolt.
Now in Tunnel Design, work progress, often adopt i iron as the preliminary bracing measure of putting more energy into for hole shallow embedding strengthening segment and poor section of barrel country rock or widened section.Conventional way is to be processed into steel grating with complete i iron or with indented bars combination, and the i iron edge of being everlasting sprays mixed earth and joint portion, the i iron edge of a wing, and concrete can be combined into one i iron.But find in actual construction, the stress performance of sprayed mortar and I steel composite material is good not, and i iron stability is not high yet, easily occurs the conventional diseases such as hoop cracking, and need to use a large amount of i iron, and cost is also higher.
Summary of the invention
It is higher that the object of the invention is to provide a kind of structural stability, can effectively avoid occurring the diseases such as hoop cracking, and saved tunnel support i iron and the manufacture method thereof of manufacturing cost.
Technical scheme of the present invention is: a kind of tunnel support i iron, comprise an i iron body, described i iron body is split-type structural, is made up of top and bottom, between the junction of described top and bottom, be provided with through hole, in described through hole, fill out and be provided with sprayed mortar.
A kind of I-shaped steel making method for tunnel support, the steps include:
1. along cut-off rule, i iron body is divided into top and bottom in i iron body intermediate lateral, the junction of top and bottom respectively divided go out groove and the protrusion of mutual interlock;
2. after move to the left side or the right on described top, then top is connected with bottom, the groove on top and the groove of bottom connect and compose through hole, and the protrusion on top and the protrusion of bottom are mutually conflicted and weld;
3. in described through hole, the i iron after sprayed mortar and the processing combination of filling forms tunnel preliminary bracing i iron bow member assembly after sprayed mortar parcel.
Further technical scheme, described cut-off rule is zigzag, one in wavy or square.
In technique scheme, on the existing i-beam structure generally using, laterally cut i iron to be divided into top and bottom along cut-off rule at middle part at i iron, this cut-off rule can be zigzag, wavy or square one, top after cutting apart and the junction of bottom form respectively groove and the protrusion of mutual interlock, again by top to the left side or the right move certain distance, reconfigure top and bottom are linked together, this time, the groove on top can connect and compose through hole with the groove of bottom, due to the shape difference of cut-off rule, can form hexagon through hole, manhole or square through hole, especially best with hexagon through hole, its structure is the most stable, the protrusion of top and bottom is conflicted mutually.Cut apart i iron after restructuring in tunnel excavation, preliminary bracing use procedure, sprayed mortar can pass in the middle of through hole, each Pin i iron longitudinal tunnel is coupled together effectively, intensity and the stability of i iron entirety are improved, avoid occurring the conventional diseases such as hoop cracking, and due to the globality being connected with i iron by strengthening sprayed mortar, can improve the integral rigidity of i iron, save i iron manufacturing cost.
Advantage of the present invention is:
1. the present invention is by being divided into top and bottom along cut-off rule by i iron at i iron middle part, after move on top and bottom reconnects, form through hole between the two, shotcrete layer is set in through hole, thereby effectively raise the stability of i iron, avoid occurring the conventional diseases such as hoop cracking, and improved the whole height of i iron, improve assembly integral rigidity, saved manufacturing cost.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is existing i-beam structure schematic diagram;
Fig. 2 is existing i iron lateral view;
Fig. 3 is that in the embodiment of the present invention one, i iron is cut apart rear structural representation;
Fig. 4 is that in the embodiment of the present invention one, i iron is cut apart lateral side view;
Fig. 5 is the structural representation of tunnel of the present invention preliminary bracing i iron bow member assembly (containing sprayed mortar);
Fig. 6 is the profile in tunnel of the present invention;
Fig. 7 is the lateral view of the embodiment of the present invention two.
Wherein: 1, body; 2, top; 3, bottom; 4, through hole; 5, cut-off rule; 6, preliminary bracing i iron bow member assembly for tunnel; 7, concrete.
The specific embodiment
Embodiment mono-: referring to shown in Fig. 1 to 6, a kind of tunnel support i iron, comprises an i iron body 1, described i iron body 1 is split-type structural, formed by top 2 and bottom 3, between the junction of described top 2 and bottom 3, be provided with through hole 4, filling sprayed mortar in described through hole.
A kind of I-shaped steel making method for tunnel support, the steps include:
1. along zigzag cut-off rule 5, i iron body 1 is divided into top 2 and bottom 3 in i iron body 1 intermediate lateral, the junction of top 2 and bottom 3 respectively divided go out groove and the protrusion of mutual interlock;
2. after move to the left side or the right on described top 2, then top 2 is connected with bottom 3, the groove on top and the groove of bottom connect and compose through hole 4, and the protrusion on top and the protrusion of bottom are mutually conflicted and weld;
3. in described through hole, the i iron after sprayed mortar 7 and the processing combination of filling forms tunnel preliminary bracing i iron bow member assembly after sprayed mortar parcel.
While use in i iron tunnel support engineering, first i iron is divided into top and bottom along cut-off rule, after relative bottom, top moves a certain distance, reconfigure welding, form hexagon through hole between the two, clog sprayed mortar and i iron appearance parcel sprayed mortar in through hole after, form tunnel preliminary bracing i iron bow member assembly, its integral rigidity, intensity and stability are improved, the conventional diseases such as hoop cracking are avoided, and the height of i iron entirety increases and the increase of assembly integral rigidity, has effectively saved manufacturing cost.
Above-described embodiment is only explanation technical conceive of the present invention and feature, and its object is to allow person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences that Spirit Essence is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.
Embodiment bis-: shown in Figure 7, a kind of tunnel support i iron, comprises an i iron body, described i iron body is split-type structural, formed by top 2 and bottom 3, between the junction of described top and bottom, be provided with through hole 4, filling sprayed mortar in described through hole.
A manufacture method for i iron for tunnel support, the steps include:
1. along cut-off rule 5, i iron body is divided into top 2 and bottom 3 in i iron body 1 intermediate lateral, the junction of top 2 and bottom 3 respectively divided go out groove and the protrusion of mutual interlock;
2. after move to the left side or the right on described top 2, then top 2 is connected with bottom 3, the groove on top and the groove of bottom connect and compose square through hole 4, and the protrusion on top and the protrusion of bottom are mutually conflicted and weld;
3. in described through hole, the i iron after sprayed mortar and the processing combination of filling forms tunnel preliminary bracing i iron bow member assembly after sprayed mortar parcel.
When i iron uses in tunnel support engineering, first i iron is divided into top and bottom along cut-off rule, described cut-off rule is square segmentation line, after relative bottom, top moves a certain distance, reconfigure welding, form square through hole between the two, clog sprayed mortar and i iron appearance parcel sprayed mortar in through hole after, form tunnel preliminary bracing i iron bow member assembly, its integral rigidity, intensity and stability are improved, the conventional diseases such as Tunnel hoop cracking are avoided, and the height of i iron entirety increases and the increase of assembly integral rigidity, effectively save manufacturing cost.
Claims (3)
1. a tunnel support i iron, comprise an i iron body (1), it is characterized in that: described i iron body (1) is split-type structural, formed by top (2) and bottom (3), between the junction of described top (2) and bottom (3), be provided with through hole (4), in described through hole (4), fill out and be provided with sprayed mortar.
2. an I-shaped steel making method for tunnel support, is characterized in that, the steps include:
1. along cut-off rule (5), i iron body is divided into top (2) and bottom (3) in i iron body intermediate lateral, the junction of top and bottom respectively divided go out groove and the protrusion of mutual interlock;
2. after move to the left side or the right described top (2), again top (2) are connected with bottom (3), the groove on top and the groove of bottom connect and compose through hole (4), and the protrusion on top and the protrusion of bottom are mutually conflicted and weld;
3. in described through hole, the i iron after sprayed mortar and the processing combination of filling forms tunnel preliminary bracing i iron bow member assembly after sprayed mortar parcel.
3. I-shaped steel making method for a kind of tunnel support according to claim 2, is characterized in that: described cut-off rule (5) is zigzag, one in wavy or square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210430673.1A CN103790600A (en) | 2012-11-02 | 2012-11-02 | Tunnel supporting H-section steel and method for manufacturing same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210430673.1A CN103790600A (en) | 2012-11-02 | 2012-11-02 | Tunnel supporting H-section steel and method for manufacturing same |
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| CN103790600A true CN103790600A (en) | 2014-05-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404006A (en) * | 2018-11-13 | 2019-03-01 | 西安科技大学 | A kind of assembled preliminary bracing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1512018A (en) * | 2002-12-30 | 2004-07-14 | 丘民世 | Prestress combined beam, continuous prestress combined beam structure and producing connection method |
| KR100536480B1 (en) * | 2003-12-16 | 2005-12-14 | 우원개발 주식회사 | Watering method for lining wall of a vertical tunnel |
| CN2797485Y (en) * | 2005-05-19 | 2006-07-19 | 沈阳建筑大学 | Honeycomb steel skeleton concrete column |
| CN201843214U (en) * | 2010-05-13 | 2011-05-25 | 长安大学 | Concrete-filled rectangular steel tube structure of stiffening rib with trapezoidal openings |
| CN102174838A (en) * | 2011-03-31 | 2011-09-07 | 钟连生 | Multifunctional central heating wall capable of hiding water and wire pipes |
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2012
- 2012-11-02 CN CN201210430673.1A patent/CN103790600A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1512018A (en) * | 2002-12-30 | 2004-07-14 | 丘民世 | Prestress combined beam, continuous prestress combined beam structure and producing connection method |
| KR100536480B1 (en) * | 2003-12-16 | 2005-12-14 | 우원개발 주식회사 | Watering method for lining wall of a vertical tunnel |
| CN2797485Y (en) * | 2005-05-19 | 2006-07-19 | 沈阳建筑大学 | Honeycomb steel skeleton concrete column |
| CN201843214U (en) * | 2010-05-13 | 2011-05-25 | 长安大学 | Concrete-filled rectangular steel tube structure of stiffening rib with trapezoidal openings |
| CN102174838A (en) * | 2011-03-31 | 2011-09-07 | 钟连生 | Multifunctional central heating wall capable of hiding water and wire pipes |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404006A (en) * | 2018-11-13 | 2019-03-01 | 西安科技大学 | A kind of assembled preliminary bracing |
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Application publication date: 20140514 |