CN102704492A - Connecting structure of section steel support and concrete support, and construction method - Google Patents
Connecting structure of section steel support and concrete support, and construction method Download PDFInfo
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- CN102704492A CN102704492A CN2012101912072A CN201210191207A CN102704492A CN 102704492 A CN102704492 A CN 102704492A CN 2012101912072 A CN2012101912072 A CN 2012101912072A CN 201210191207 A CN201210191207 A CN 201210191207A CN 102704492 A CN102704492 A CN 102704492A
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Abstract
The invention provides a connecting structure of a section steel support and a concrete support. The connecting structure comprises an H section steel support, an H steel structure connecting piece and a reinforced concrete support, and is characterized in that the steel structure connecting piece and the reinforced concrete support are stacked together horizontally; a pre-buried connecting bolt is arranged on the reinforced concrete support; one side of the steel structure connecting piece is connected with the reinforced concrete support through the pre-buried connecting bolt in a detachable manner; and the other side of the steel structure connecting piece is connected with the section steel support through a detachable high-strength bolt. The section steel support and the reinforced concrete support are combined in a foundation pit supporting plane, reinforced concrete structures are adopted in longer diagonal braces or angle braces and irregular rim positions, and section steel structures are adopted in regular rims and the positions of shorter diagonal braces or angle braces. Connection contacts have the advantages of high shear strength, recycling and reusing of section steel and the like, are convenient and fast to connect, and can achieve the purposes of construction period reduction, construction cost reduction and low carbon and environmental protection of the foundation pit supporting engineering.
Description
Technical field
The present invention relates to technical field of civil engineering, relate in particular to the inner supporting structure and the job practices of pattern foundation pit supporting structure, and the shaped steel recycling of materials.
Background technology
In the development process of urban underground space; Along with the increase of mining inetesity and area, the flat shape of its underground space will change with the environmental change of periphery, is irregular polygon or arc; Situation such as planar dimension is bigger, this has brought many difficult problems to foundation pit supporting project.With respect to a rectangle foundation ditch that planar dimension is less, irregular polygon large scale foundation ditch, it is very difficult that the stressed and cloth of its supporting and protection structure supports, and regular meeting causes stressed uneven with distortion, and is out of shape unmanageable difficulty.For the rectangle plane pattern foundation pit supporting structure of reduced size, the normal inner supporting structure that adopts mainly contains reinforced concrete truss formula structure and shaped steel truss structure.And, generally adopting reinforced concrete truss formula inner supporting structure to irregular, large scale plane pattern foundation pit supporting structure, he has the support rigidity height; The cloth support can be with advantages such as border change in shape; But there is the construction period longer, the excavation of foundation pit difficulty, backing material is reusable not; Support cost is higher, and the building waste that supporting removal produces is handled problems such as difficulty; Have easy construction though formed steel construction supports, do not need maintenance, the construction period is short; Support cost is low, material can be multiplexing etc. advantage; But also there is support rigidity not high, is difficult to deficiencies such as cloth support when boundary shape is irregular, be not suitable for the pattern foundation pit supporting structure of large scale plane foundation ditch or concave plane.
Summary of the invention
For in out-of-shape, large-area deep foundation pit support engineering; The braced structures material that overcomes existing pattern foundation pit supporting structure is single; Support material can not reuse and the construction period long, or support rigidity is not enough, problems such as cloth support difficulty; The present invention provides a kind of shaped steel to support syndeton and the job practices thereof that supports with concrete, and its key is how to realize that shaped steel supports and being connected of steel concrete support.
For addressing the above problem, the present invention adopts following technical scheme:
A kind of shaped steel supports the syndeton that supports with concrete; Including the support of H shaped steel, H steel structure connecting member and steel concrete supports; It is characterized in that H steel structure connecting member and steel concrete support level are stacked together, steel concrete supports and is provided with pre-buried connecting bolt; H steel structure connecting member one side supports with removably connecting reinforcement concrete through pre-buried connecting bolt, and H steel structure connecting member opposite side supports with H shaped steel and is connected through detachable high-strength bolt.This structure supports H shaped steel with the steel concrete support and is combined in the pattern foundation pit supporting structure plane; long support or angle brace and irregular boundary position are adopted reinforced concrete structure; On the border of rule and than short, the H formed steel construction is adopted in support or angle brace position; Have that shear strength is big, easy to connect fast, the recyclable advantage such as multiplexing of H shaped steel, reached the reduction of erection time, reduced the target of construction costs, foundation pit supporting project low-carbon environment-friendly.
The H steel structure connecting member is positioned at the middle part of steel concrete supporting section; On two side wing edges of H steel structure connecting member; By a determining deviation a plurality of bolts hole that distribute, the bolt hole of a side is used to connect pre-buried connecting bolt, and the bolt hole of opposite side is used to connect H shaped steel to be supported.
Pre-buried connecting bolt passes the bolt hole on H steel structure connecting member one side wing edge, and fastening through detachable nut.Increase the moment of torsion of pre-buried connecting bolt top nut between the support of H steel structure connecting member and steel concrete, can increase H steel structure connecting member and steel concrete and support the frictional resistance between the contact.
H shaped steel supports and is provided with prepared screw-bolt hole, and the bolt hole that high-strength bolt passes on the prepared screw-bolt hole and the H steel structure connecting member opposite side edge of a wing is fastening through detachable nut.Increase the moment of torsion of high-strength bolt top nut between the support of H steel structure connecting member and H shaped steel, can increase H steel structure connecting member and H shaped steel and support the frictional resistance between the contact.
Pre-buried connecting bolt is in-line, L shaped or U-shaped, and the reinforcing bar during pre-buried connecting bolt and steel concrete support links to each other.Pre-buried connecting bolt and concrete have enough adhesive surfaces, can conveniently support interior reinforcing bar with steel concrete and weld mutually.
Above-mentioned shaped steel supports the job practices of the syndeton that supports with concrete, may further comprise the steps:
The first step, assembling reinforcement on the position that steel concrete supports;
Second step, support the link position levelling of supporting with steel concrete at H shaped steel, a locating rack is installed, the H steel structure connecting member is fixed;
The 3rd step linked to each other pre-buried connecting bolt one end with the bolt hole of steel structure connecting member, the reinforcing bar in the support of the other end and steel concrete is connected;
The 4th step, at the medial and lateral shuttering that steel concrete supports, concreting, and maintenance when reaching designing requirement intensity, with the pre-buried connecting bolt of nut screwing clamping, makes steel structure connecting member arrive with the steel concrete support and connection to certain length of time;
In the 5th step, the support of H shaped steel is linked to each other with steel structure connecting member.
Before second step, along the grooving of steel concrete Support Position, for supporting the construction slot milling.
In second step, locating rack is to be fixed on steel concrete to support the steelframe in the following soil layer, dismountable this temporary fixed steelframe after the steel concrete support is built and accomplished, and steel structure connecting member is installed on the locating rack.
In the 3rd step, reinforcing bar and pre-buried connecting bolt in steel concrete supports interconnect, and connected mode is colligation or is welded to connect.
In the 4th step, inner side template is partly utilized the H steel structure connecting member, and bolt hole is sealed with clay.
The edge of a wing at the H steel structure connecting member respectively connects a long steel plate up and down, makes template with the edge of a wing.
After engineering finishes, turn on the attaching nut between the support of H steel structure connecting member and steel concrete, utilize jacking device that H steel structure connecting member and steel concrete are supported disengagement, H shaped steel is supported hanging out recycling.The jacking device level is installed in the H steel structure connecting member; Jacking device one end withstands on the pre-buried connecting bolt, and the other end withstands on the edge of a wing of H steel structure connecting member, starts jacking device;, the H steel structure connecting member supported from steel concrete back down as activity supporting point not with pre-buried connecting bolt.
The invention has the advantages that this connection access node structure has that shear strength is big, easy to connect fast, the recyclable advantage such as multiplexing of H shaped steel, reached the reduction of erection time, reduced the purpose of construction costs.In the supporting of erose large scale plane foundation ditch; In order to give full play to the advantage separately that steel concrete supports and formed steel construction supports; Shaped steel support and concrete support are combined the direction that application will be the pattern foundation pit supporting structure development; So both can reduce the consumption of steel concrete, and can the recycling of H shaped steel have been reached the purpose of energy-saving and emission-reduction again.
Description of drawings
Fig. 1 is the sectional drawing that the H shaped steel that proposes of the present invention supports the syndeton that supports with steel concrete;
Fig. 2 is the plan view of this syndeton.
The specific embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect and be easy to understand and understand, below in conjunction with diagram and specific embodiment, further set forth the present invention.
Referring to Fig. 1 and Fig. 2; Support in 2 that at steel concrete many pre-buried connecting bolts 4 being set, be scattered in row's bolt hole by a determining deviation on two side wing edges of H steel structure connecting member 3, an end of pre-buried connecting bolt 4 is linked to each other with the reinforcing bar 5 that steel concrete supports in 2; The other end links to each other with H steel structure connecting member 3; Build steel concrete then and support the concrete in 2, treat the maintenance certain hour after, H shaped steel is supported 1 links to each other through bolt 6 with H steel structure connecting member 3 and to get final product.
This structure supports 2 with support 1 of H shaped steel and steel concrete and is combined in the pattern foundation pit supporting structure plane; long support or angle brace and irregular boundary position are adopted reinforced concrete structure, on the border of rule and short formed steel construction is adopted in support or angle brace position.This syndeton has that shear strength is big, easy to connect fast, the recyclable advantage such as multiplexing of H shaped steel, has reached the reduction of erection time, has reduced the target of construction costs, foundation pit supporting project low-carbon environment-friendly.
H steel structure connecting member 3 is positioned at the middle part of steel concrete supporting section; On two side wing edges of H steel structure connecting member 3; By a determining deviation a plurality of bolts hole that distribute, the bolt hole of a side is used to connect pre-buried connecting bolt 4, and the bolt hole of opposite side is used to connect H shaped steel and supports 1.
The bolt hole that pre-buried connecting bolt 4 passes on H steel structure connecting member 3 one side wing edges is fastening through detachable nut.Increase the moment of torsion that H steel structure connecting member 3 and steel concrete support connecting bolt top nut between 2, can increase H steel structure connecting member 3 and steel concrete and support the frictional resistance between 2 contacts.
H shaped steel supports 1 and is provided with prepared screw-bolt hole, and the bolt hole that high-strength bolt passes on the prepared screw-bolt hole and the H steel structure connecting member opposite side edge of a wing is fastening through detachable nut.Increase the moment of torsion that H steel structure connecting member 3 and H shaped steel support high-strength bolt top nut between 1, can increase H steel structure connecting member and H shaped steel and support the frictional resistance between the contact;
Said pre-buried connecting bolt 4 is in-line, L shaped or U type.Pre-buried connecting bolt and concrete have enough adhesive surfaces, can be convenient with the steel concrete support on arrangement of reinforcement weld mutually.Make H steel structure connecting member 3 have enough bearing capacities.Pre-buried connecting bolt 4 links to each other with the reinforcing bar 5 that steel concrete supports in 2.
Concrete job practices is following:
The first step: assembling reinforcement 5 on the position of steel concrete support 2, press designing requirement at the enough shear reinforcements of steel concrete bracket position configuration.
Second step: support 2 link position levelling at support 1 of H shaped steel and steel concrete, a locating rack is installed, H steel structure connecting member 3 is fixing, bore a plurality of bolts hole on two side wing edges of H steel structure connecting member 3.Locating rack is to be fixed on the steelframe that supports in the following soil layer, and steel concrete can be removed this temporary fixed steelframe after supporting and building completion, and the H steel structure connecting member is to be installed on the locating rack.
The 3rd step: pre-buried connecting bolt 4 one ends are linked to each other with the bolt hole of H steel structure connecting member 3, and the reinforcing bar 5 during the other end and steel concrete support is connected, and employing is welded or the binding method connection.Before second step, support 2 position groovings along steel concrete, for supporting the construction slot milling.
The 4th step: support 2 medial and lateral shuttering at steel concrete, inner side template is partly utilized H steel structure connecting member 3, and the bolt hole on the H formed steel construction connector is sealed with clay.Because H steel structure connecting member 3 is positioned at the middle part that steel concrete supports 2 cross sections, convenient for formwork erection, need respectively to connect a long steel plate up and down on the edge of a wing of H steel structure connecting member 3, make template with the edge of a wing; Concreting, and maintenance is to certain length of time, when reaching designing requirement intensity, with the moment of torsion of the nut screwing clamping on the pre-buried connecting bolt 4 to designing requirement.
The 5th step: H shaped steel is supported 1 link to each other with H steel structure connecting member 3, the prepared screw-bolt hole that supports through H shaped steel connects with high-strength bolt 6, and nut screwing clamping is arrived the moment of torsion of designing requirement, can realize being connected of the support 1 of H shaped steel and H steel structure connecting member 3.
Through above-mentioned steps and job practices, can realize that H shaped steel supports the Combination application that supports with steel concrete, this combination can not only be satisfied the requirement of irregular large-area deep foundation pit supporting, and can give full play to the supporting advantage of these two kinds of materials for support.
After foundation pit supporting project is accomplished, can follow these steps to accomplish and remove and recycling.
The first step: turn on H steel structure connecting member 3 and support the attaching nut on 2 with steel concrete;
Second step: level is installed the jacking device of a special use on H steel structure connecting member 3, and an end withstands on the pre-buried bolt 4, and the other end withstands on the edge of a wing of H steel structure connecting member 3;
The 3rd step: start jacking device, as activity supporting point not, jacking device ejects H steel structure connecting member 3 at leisure from the steel concrete support with pre-buried connecting bolt 4;
The 4th step: when pre-buried connecting bolt 4 is thrown off with H steel structure connecting member 3 fully, can H shaped steel support 1 be hung out, can realize the recycling of shaped steel material.
Advantage of the present invention is following:
1.H shaped steel closely links to each other through stone bolt with reinforced concrete beam, through harmonious ground co-operation, can stop the cripling of shaped steel, and can significantly improve the out-of-plane torsional buckling performance of shaped steel, makes the steel strength of shaped steel be able to give full play to.
2. steel supports through linking to each other with shaped steel, and effectively dispersed steel supports the local compressive stress of termination, crushes and the excessive deformation of the support that causes in the concrete part of having avoided traditional support part pressure-bearing to cause inadequately.
3. in foundation pit supporting construction; The axle power, moment of flexure, the shearing that enclose purlin are often all very big, through the harmonious ground co-operation of shaped steel and concrete beam, can make the pressurized that encloses the purlin member, cut, receive curved bearing capacity to increase substantially; Steel have promptly been practiced thrift; Reduce the section area of member again, simultaneously, also helped the distortion that reduces the pit maintenance soil structure.
4. simultaneously, H shaped steel is in the side of concrete beam, when placing of concrete, can the double as template action, and reduce the consumption of template.
5. the present invention supports shaped steel with concrete and constitutes combined support, and the support of satisfying irregularly shaped foundation ditch requires (irregular be difficult to use steel support), must support with steel concrete.
6. dissimilar support combinations can satisfy the different deformation requirements of foundation ditch periphery.
More than show and described basic principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the manual just explains principle of the present invention; The present invention also has various changes and modifications under the prerequisite that does not break away from spirit and scope of the invention, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection domain to be defined by appending claims and equivalent thereof.
Claims (14)
1. a shaped steel supports the syndeton that supports with concrete; Including the support of H shaped steel, H steel structure connecting member and steel concrete supports; It is characterized in that H steel structure connecting member and steel concrete support level are stacked together, steel concrete supports and is provided with pre-buried connecting bolt; H steel structure connecting member one side supports with removably connecting reinforcement concrete through pre-buried connecting bolt, and H steel structure connecting member opposite side supports with H shaped steel and is connected through detachable high-strength bolt.
2. a kind of shaped steel according to claim 1 supports the syndeton that supports with concrete; It is characterized in that; The H steel structure connecting member is positioned at the middle part of steel concrete supporting section, on two side wing edges of H steel structure connecting member, by a determining deviation a plurality of bolts hole that distribute; The bolt hole of one side is used to connect pre-buried connecting bolt, and the bolt hole of opposite side is used to connect H shaped steel to be supported.
3. a kind of shaped steel according to claim 2 supports the syndeton that supports with concrete, it is characterized in that pre-buried connecting bolt passes the bolt hole on H steel structure connecting member one side wing edge, and fastening through detachable nut.
4. a kind of shaped steel according to claim 3 supports the syndeton that supports with concrete; It is characterized in that; H shaped steel supports and is provided with prepared screw-bolt hole, and the bolt hole that high-strength bolt passes on the prepared screw-bolt hole and the H steel structure connecting member opposite side edge of a wing is fastening through detachable nut.
5. a kind of shaped steel according to claim 1 supports the syndeton that supports with concrete, it is characterized in that pre-buried connecting bolt is in-line, L shaped or U-shaped.
6. a kind of shaped steel according to claim 1 supports the syndeton that supports with concrete, it is characterized in that, pre-buried connecting bolt links to each other with reinforcing bar during steel concrete supports.
7. a shaped steel supports the job practices of the syndeton that supports with concrete, it is characterized in that, may further comprise the steps:
The first step, assembling reinforcement on the position that steel concrete supports;
Second step, support the link position levelling of supporting with steel concrete at H shaped steel, a locating rack is installed, the H steel structure connecting member is fixed;
The 3rd step linked to each other pre-buried connecting bolt one end with the bolt hole of steel structure connecting member, the reinforcing bar in the support of the other end and steel concrete is connected;
The 4th step, at the medial and lateral shuttering that steel concrete supports, concreting, and maintenance when reaching designing requirement intensity, with the pre-buried connecting bolt of nut screwing clamping, makes steel structure connecting member arrive with the steel concrete support and connection to certain length of time;
In the 5th step, the support of H shaped steel is linked to each other with steel structure connecting member.
8. a kind of shaped steel according to claim 7 supports the job practices of the syndeton that supports with concrete, it is characterized in that, before second step, along the grooving of steel concrete Support Position, for supporting the construction slot milling.
9. a kind of shaped steel according to claim 7 supports the job practices of the syndeton that supports with concrete; It is characterized in that; In second step; Locating rack is to be fixed on steel concrete to support the steelframe in the following soil layer, dismountable this temporary fixed steelframe after the steel concrete support is built and accomplished, and steel structure connecting member is installed on the locating rack.
10. a kind of shaped steel according to claim 7 supports the job practices of the syndeton that supports with concrete; It is characterized in that; In the 3rd step, reinforcing bar and pre-buried connecting bolt in steel concrete supports interconnect, and connected mode is colligation or is welded to connect.
11. a kind of shaped steel according to claim 7 supports the job practices of the syndeton that supports with concrete, it is characterized in that, in the 4th step, inner side template is partly utilized the H steel structure connecting member, and bolt hole is sealed with clay.
12. a kind of shaped steel according to claim 11 supports the job practices of the syndeton that supports with concrete, it is characterized in that, respectively connects a long steel plate up and down on the edge of a wing of H steel structure connecting member, makes template with the edge of a wing.
13. a kind of shaped steel according to claim 7 supports the job practices of the syndeton that supports with concrete; It is characterized in that; After engineering finishes; Turn on the attaching nut between the support of H steel structure connecting member and steel concrete, utilize jacking device that H steel structure connecting member and steel concrete are supported disengagement, H shaped steel is supported hanging out recycling.
14. a kind of shaped steel according to claim 13 supports the job practices of the syndeton that supports with concrete; It is characterized in that the jacking device level is installed in the H steel structure connecting member, jacking device one end withstands on the pre-buried connecting bolt; The other end withstands on the edge of a wing of H steel structure connecting member; Start jacking device, as activity supporting point not, the H steel structure connecting member supported from steel concrete back down with pre-buried connecting bolt.
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| CN201210191207.2A CN102704492B (en) | 2012-06-11 | 2012-06-11 | Connecting structure of section steel support and concrete support, and construction method |
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| CN201210191207.2A CN102704492B (en) | 2012-06-11 | 2012-06-11 | Connecting structure of section steel support and concrete support, and construction method |
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Cited By (6)
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| CN102943481A (en) * | 2012-12-12 | 2013-02-27 | 上海强劲地基工程股份有限公司 | Reinforced concrete beam and steel beam combined connecting structure for foundation pit supporting and construction method thereof |
| CN103088829A (en) * | 2013-01-30 | 2013-05-08 | 上海城建市政工程（集团）有限公司 | Construction method of concrete support in foundation pit |
| CN103374919A (en) * | 2013-07-29 | 2013-10-30 | 浙江博雷重型机床制造有限公司 | Filler block for supporting system |
| CN103382721A (en) * | 2013-07-26 | 2013-11-06 | 浙江博雷重型机床制造有限公司 | Connecting piece |
| CN103382720A (en) * | 2013-07-15 | 2013-11-06 | 浙江博雷重型机床制造有限公司 | Support rod |
| CN103388335A (en) * | 2013-07-26 | 2013-11-13 | 浙江博雷重型机床制造有限公司 | Bracing part |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943481A (en) * | 2012-12-12 | 2013-02-27 | 上海强劲地基工程股份有限公司 | Reinforced concrete beam and steel beam combined connecting structure for foundation pit supporting and construction method thereof |
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| CN103088829B (en) * | 2013-01-30 | 2015-08-26 | 上海城建市政工程（集团）有限公司 | The construction method that in a kind of foundation ditch, concrete supports |
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| CN103382721A (en) * | 2013-07-26 | 2013-11-06 | 浙江博雷重型机床制造有限公司 | Connecting piece |
| CN103388335A (en) * | 2013-07-26 | 2013-11-13 | 浙江博雷重型机床制造有限公司 | Bracing part |
| CN103388335B (en) * | 2013-07-26 | 2015-04-15 | 浙江博雷重型机床制造有限公司 | Bracing part |
| CN103382721B (en) * | 2013-07-26 | 2015-06-03 | 浙江博雷重型机床制造有限公司 | Connecting piece |
| CN103374919A (en) * | 2013-07-29 | 2013-10-30 | 浙江博雷重型机床制造有限公司 | Filler block for supporting system |
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|---|---|
| CN102704492B (en) | 2014-06-25 |
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Inventor after: Liu Quanlin Inventor after: Song Weimin Inventor after: Ding Qingpeng Inventor after: Fan Junyu Inventor before: Liu Quanlin Inventor before: Song Weimin Inventor before: Fan Junyu Inventor before: Zhang Han |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LIU QUANLIN SONG WEIMIN FAN JUNYU ZHANG HAN TO: LIU QUANLIN SONG WEIMIN DING QINGPENG FAN JUNYU |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |