CN202925553U - Connection structure for foundation pit supporting and protecting reinforced concrete beam and steel beam combination - Google Patents
Connection structure for foundation pit supporting and protecting reinforced concrete beam and steel beam combination Download PDFInfo
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- CN202925553U CN202925553U CN 201220682244 CN201220682244U CN202925553U CN 202925553 U CN202925553 U CN 202925553U CN 201220682244 CN201220682244 CN 201220682244 CN 201220682244 U CN201220682244 U CN 201220682244U CN 202925553 U CN202925553 U CN 202925553U
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- reinforced concrete
- concrete beam
- steel
- girder steel
- foundation pit
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Abstract
The utility model proposes a connection structure for foundation pit supporting and protecting reinforced concrete beam and steel beam combination. The connection structure for foundation pit supporting and protecting reinforced concrete beam and steel beam combination comprises a reinforced concrete beam and a steel beam and is characterized in that pre-embedded screw nuts are arranged in the reinforced concrete beam, one ends of the screw nuts are connected with pre-embedded screw bolts or steel bars, the other ends of the screw nuts tightly cling to the steel beam, and the other ends of the screw nuts are connected with the steel beam through detachable screw rods. In the construction process, the concrete beam is poured by using the steel beam as a template. The structure is characterized in that advantages of the reinforced concrete beam and the steel beam are utilized, and shortcomings of the reinforced concrete beam and the steel beam are overcome. The structure is advantaged by great compressive strength, convenience and fast speed of connection, convenience and fast speed of disassembly, recoverable and reusable properties of the H-shaped steel, and the like. The aim of shortening the construction period and reducing construction costs is realized.
Description
Technical field
The utility model relates to technical field of civil engineering, relates in particular to the syndeton of concrete beam and girder steel combination in the inner supporting structure of pattern foundation pit supporting structure.
Background technology
In the development process of urban underground space, pattern foundation pit supporting structure is the safety in order to ensure underground space Adjacent Buildings, structure, town road pipeline, and must Adopts measure.The advantages such as in pattern foundation pit supporting structure, coagulation fortifield village purlin is to use at present maximum purlins that encloses, and coagulation fortifield village purlin has good integrity, and rigidity is high, and shape is unrestricted, and difficulty of construction is less; But high material consumption is also arranged, easily produce Fissure and fracture when stressed, the problems such as environment pollution when removing.
So need the purlin that encloses of a kind of novel girder steel of design and reinforced concrete beam stack combinations type, make combination enclose purlin and have advantages of that good rigidity, the deformation of reinforced concrete fortifield village purlin are little, make up simultaneously the shortcoming of reinforced concrete fortifield village purlin high material consumption, stressed easy generation Fissure and fracture.And the girder steel that purlin is enclosed in this combination must be easy to remove after supporting is complete, and is not fragile.
The utility model content
Technical problem to be solved in the utility model is, overcomes problems of the prior art, and the syndeton of a kind of pattern foundation pit supporting structure with reinforced concrete beam and girder steel combination is provided.
For addressing the above problem, the utility model by the following technical solutions:
The syndeton that a kind of pattern foundation pit supporting structure makes up with reinforced concrete beam and girder steel, include reinforced concrete beam and girder steel, it is characterized in that, be provided with pre-buried nut in reinforced concrete beam, nut one end connects pre-embedded bolt or reinforcing bar, and the nut other end fits tightly with girder steel and is connected by dismountable screw rod.
The other end of nut is concordant with the vertical plane of reinforced concrete beam.
Described girder steel is H shaped steel, is provided with the bolt hole that passes for screw rod on the edge of a wing of H shaped steel.
Pre-embedded bolt is in-line, L shaped or U-shaped.
Pre-embedded bolt is connected with reinforcing bar in the reinforced concrete beam.
In reinforced concrete beam inner nut and welding again after pre-embedded bolt or reinforcing bar are connected.
The utility model has the advantage of, it is large, easy to connect fast and reliable that this syndeton has shear strength, guarantee that the girder steel dismounting is convenient and swift, not fragile, the advantages such as girder steel repetitive cycling use, give full play to the advantage separately that reinforced concrete beam and steel beam structure support, reached the reduction of erection time, reduced the purpose of construction costs.So both can reduce the consumption of steel concrete, and girder steel can be reused again, reach the purpose of energy-saving and emission-reduction.
Description of drawings
Fig. 1 is the sectional drawing that pattern foundation pit supporting structure described in the utility model is used the syndeton of concrete beam and girder steel.
Fig. 1 a is the syndeton demolishing process schematic diagram that pattern foundation pit supporting structure described in the utility model is used concrete beam and girder steel.
Fig. 1 b is the end view that is connected after pattern foundation pit supporting structure described in the utility model is used concrete beam and the syndeton of girder steel is removed girder steel.
Fig. 2 is pre-embedded bolt schematic diagram described in the utility model.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose with effect is easy to understand, below in conjunction with illustrating and specific embodiment, further set forth the utility model.
Referring to Fig. 1, Fig. 1 a, Fig. 1 b and Fig. 2, many pre-embedded bolts 4 are set in reinforced concrete beam 2, bolt hole in a row at a certain distance distributes on the edge of a wing of H shaped steel 3, one end of pre-embedded bolt 4 is connected with reinforcing bar in reinforced concrete beam 2, in concrete beam, pre-embedded bolt 4 ends are provided with coupled pre-buried nut 1, embedded nut 1 opening is towards girder steel one side, be provided with the detachable screw rod 5 for the attaching nut on girder steel, girder steel is by screw rod 5 and nut 1 connecting reinforcement concrete beam.The contact surface place of girder steel and reinforced concrete beam is provided with interleaving agent or isolated material, during dismounting, guarantees girder steel and reinforced concrete beam adhesion.Embedded nut 1 end is concordant with reinforced concrete beam 2 vertical face, guarantees that girder steel and reinforced concrete beam fit tightly.Nut and girder steel are close to, and in the time of can preventing that reinforced concrete beam from building, cement grout enters in nut or cement grout parcel screw rod.During dismounting, screw rod 5 is taken out, girder steel and reinforced concrete beam contact surface place without any asynthesis,, upwards, outwards move girder steel namely dismountable downwards.
This syndeton have shear strength large, easy to connect fast, dismounting is quick, after applying prestressing force, dismounting is simple, H shaped steel is recyclable the advantage such as reuses, and has reached the reduction of erection time, has reduced the target of construction costs, foundation pit supporting project low-carbon environment-friendly.
H shaped steel 3 is positioned at the reinforced concrete beam isometry position, on two side wing edges of H shaped steel 3, and a plurality of bolts hole that distribute at a certain distance, the bolt hole of a side is used for connecting screw rod 5, and the bolt hole of opposite side is used for connecting the H type steel support.
Described pre-embedded bolt 4 is in-line, L shaped or U-shaped.Pre-embedded bolt and concrete have enough adhesive surfaces, can be convenient with reinforced concrete beam on arrangement of reinforcement weld mutually.Make H shaped steel 3 have enough bearing capacities.Pre-embedded bolt 4 is connected with reinforcing bar in reinforced concrete beam 2.
In order to make nut 1 firm and reliable connection, pre-embedded bolt screws in nut 1 one segment distances in advance, and this distance is at least 1/3rd of nut length, and screwing in end 6 employing spot-welded on, prevents that the nut rotation is loosening.
During construction, in concrete beam 2 sides, then screw rod 5 passes the bolt hole on girder steel with the girder steel frame, and screw rod 5 screws in nut 1, tightens to get final product.During dismounting, oppositely Unscrew is namely detachable.
Job practices is as follows, H shaped steel 3 is set level, H shaped steel 3 connects pre-buried nut 1 by screw rod 5, nut 1 other end connects pre-embedded bolt 4 again, nut 1 and pre-embedded bolt 4 are positioned at the scope of building of reinforced concrete beam 2, and template and nut 1 that use is built as reinforced concrete beam 2 in the edge of a wing of H shaped steel 3 fit tightly; After setting the reinforcing cage in reinforced concrete beam, build reinforced concrete beam; When needs dismounting H shaped steel 3, screw rod 5 dismountings can be pulled down girder steel.
The utility model has the advantage of, this syndeton have compressive strength large, easy to connect fast, convenient disassembly is quick, the advantages such as H shaped steel reusing have reached the reduction of erection time, have reduced the purpose of construction costs.In order to give full play to the advantage separately of reinforced concrete beam and girder steel, girder steel and concrete beam 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 H shaped steel can be reused again, reach the purpose of energy-saving and emission-reduction and reduction cost.
Above demonstration and described basic principle of the present utility model, principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and manual just illustrates principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (6)
1. the syndeton that makes up with reinforced concrete beam and girder steel of a pattern foundation pit supporting structure, include reinforced concrete beam and girder steel, it is characterized in that, be provided with pre-buried nut in reinforced concrete beam, nut one end connects pre-embedded bolt or reinforcing bar, and the nut other end fits tightly with girder steel and is connected by dismountable screw rod.
2. a kind of pattern foundation pit supporting structure according to claim 1 with the syndeton of reinforced concrete beam and girder steel combination, is characterized in that, the other end of nut is concordant with the vertical plane of reinforced concrete beam.
3. a kind of pattern foundation pit supporting structure according to claim 1 with the syndeton of reinforced concrete beam and girder steel combination, is characterized in that, described girder steel is H shaped steel, is provided with the bolt hole that passes for screw rod on the edge of a wing of H shaped steel.
4. a kind of pattern foundation pit supporting structure according to claim 1 with the syndeton of reinforced concrete beam and girder steel combination, is characterized in that, pre-embedded bolt is in-line, L shaped or U-shaped.
5. a kind of pattern foundation pit supporting structure according to claim 1 with reinforced concrete beam and the syndeton that girder steel makes up, is characterized in that, pre-embedded bolt is connected with reinforcing bar in the reinforced concrete beam.
6. a kind of pattern foundation pit supporting structure according to claim 1 with the syndeton of reinforced concrete beam with the girder steel combination, is characterized in that, the reinforced concrete beam inner nut with weld again after pre-embedded bolt or reinforcing bar are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220682244 CN202925553U (en) | 2012-12-12 | 2012-12-12 | Connection structure for foundation pit supporting and protecting reinforced concrete beam and steel beam combination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220682244 CN202925553U (en) | 2012-12-12 | 2012-12-12 | Connection structure for foundation pit supporting and protecting reinforced concrete beam and steel beam combination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202925553U true CN202925553U (en) | 2013-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220682244 Expired - Lifetime CN202925553U (en) | 2012-12-12 | 2012-12-12 | Connection structure for foundation pit supporting and protecting reinforced concrete beam and steel beam combination |
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| Country | Link |
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| CN (1) | CN202925553U (en) |
Cited By (2)
| 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 |
| CN104695446A (en) * | 2015-03-13 | 2015-06-10 | 朱奎 | Basement support construction method |
-
2012
- 2012-12-12 CN CN 201220682244 patent/CN202925553U/en not_active Expired - Lifetime
Cited By (3)
| 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 |
| CN104695446A (en) * | 2015-03-13 | 2015-06-10 | 朱奎 | Basement support construction method |
| CN104695446B (en) * | 2015-03-13 | 2016-08-24 | 朱奎 | Basement construction method for supporting |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130508 |
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| CX01 | Expiry of patent term |