CN103967508A - Stretchable quick stress compensation type steel frame connection structure - Google Patents
Stretchable quick stress compensation type steel frame connection structure Download PDFInfo
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- CN103967508A CN103967508A CN201410168345.8A CN201410168345A CN103967508A CN 103967508 A CN103967508 A CN 103967508A CN 201410168345 A CN201410168345 A CN 201410168345A CN 103967508 A CN103967508 A CN 103967508A
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- steelframe
- internal thread
- flange end
- steel frame
- end plates
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Abstract
The invention discloses a stretchable quick stress compensation type steel frame connection structure used for connecting steel frames in tunnel primary support. The structure is provided with two opposite flange end plates, at least three inner thread connection elements connected with two opposite screws are arranged between the two flange end plates, and the inner thread connection elements are connected with the two screws with opposite thread directions. The structure has the advantages of being convenient to install, good in stability and little in stress loss, and can be used for connecting structural steel frames and grating steel frames in tunnel primary support steel frame stiffening.
Description
Technical field
The present invention relates to construction equipment, particularly Tunnel steelframe bracing means is manufactured field.
Background technology
At present China is greatly developing communication, because mountain region is numerous, a chain of undulating hills, usually needs to consider to build tunnel building in the process such as highway, railway.Tunnel adopts composite lining structure conventionally, and preliminary bracing is generally combined by one or several in steelframe, steel mesh reinforcement, pneumatically placed concrete, anchor pole.In the time that needs adopt steelframe to carry out preliminary bracing, owing to mostly being manual operation, setting up of steelframe often needed to expend the plenty of time.When tunnel excavation, generally have and backbreak or owe to dig phenomenon, in the time of each section of steelframe docking, if owe to dig, steelframe cannot dock, and needs to reject the native stone of owing to dig; If backbreak, steelframe is installed between rear and country rock and is had a fixed gap, makes steelframe not form immediate support to country rock, after pneumatically placed concrete applies, preliminary bracing could form effective support to country rock, and this often makes the effect of preliminary bracing not reach expected design, and tunnel is brought to potential safety hazard.Therefore when actual installation steelframe, should eliminate the space between steelframe and country rock as far as possible, steelframe is directly tightly supported on country rock, to reduce surrouding rock stress loss, reach as early as possible stress compensation.
In the time of practice of construction, for the docking of steelframe in preliminary bracing, conventionally there are at present two kinds of solutions.One, at the gap shimming of steelframe docking, then all welding, make the steelframe on both sides be fixed together by pad.This way easily operates, but pad need to weld from level to level, if space, steelframe joint is larger, the pad needing is more, and weld interval is long, and after welding, resistance to overturning is not strong.Its two, directly connect both sides steelframes with bolt, fix the flange on the steelframe of both sides by screw bolt and nut, reach the object of stablizing steelframe.The method does not need welding, but in the time of the flange of fixing both sides, not easy to operate.
Summary of the invention
In view of the above deficiency of prior art, the object of this invention is to provide one and can stretch formula stress fast compensation steelframe coupling configuration, make it under prerequisite easy for installation, eliminate the space between steelframe and country rock as far as possible, steelframe is directly tightly supported on country rock, to reduce surrouding rock stress loss, reach as early as possible stress compensation.
The object of the invention is to realize by following means.
One can be stretched formula stress fast compensation steelframe coupling configuration, for the docking of tunnel initial-stage preliminary bracing steelframe, there are two flange end plates that arrange in opposite directions, between two flange end plates, be provided with at least three and connect two internal thread connectors of screw rod in opposite directions, internal thread connector connects two screw rods with opposite threads direction.
Adopt structure of the present invention, compared with prior art, there is following major advantage:
(1) select as required suitable bolt, nut, between the original steelframe flange in tunnel, do not need other cushion block, do not cause waste of material.
(2) good to resistance to overturning after steelframe reinforcement by connection.
(3) steelframe is close on country rock, reduces as far as possible stress loss, reach as early as possible stress compensation.
Brief description of the drawings
Fig. 1 composition structure chart of the present invention.
Composition structure chart when Fig. 2 is installation of the present invention.
Fig. 3 is the longitudinal sectional view of internal thread connector.
Fig. 4 is that the application of Tunnel steelframe can be stretched formula steelframe (four s') schematic diagram.
Fig. 5 is that profile steel frame access can be stretched formula steelframe design sketch.
Fig. 6 is that grid steel frame access can be stretched formula steelframe design sketch.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
The embodiment of the present invention as shown in the figure, the present invention can stretch formula stress fast compensation steelframe coupling configuration, there are two flange end plates 4 that arrange in opposite directions, between two flange end plates, be provided with four and connect two internal thread connectors 3 of screw rod in opposite directions, internal thread connector connects two screw rods with opposite threads direction.
In the present embodiment, comprise four internal thread connectors, 16 common hex nuts, 8 bolts, 2 flange.Wherein flange end plate is identical with the flange profile of the Tunnel steelframe in requisition for access.As shown in Figure 3, its interlude, without internal thread, is furnished with 4 apertures 5 along hoop average mark to internal thread connector, and its internal diameter is less than both sides internal thread diameter, and the internal thread rotation veer at two ends is just in time contrary.In aperture in the middle of this nut can insert with special spanner, pull rotation.By this special internal thread connector and the plain bolt matching with it, nut and the flange that can be simultaneously matches with Tunnel steelframe, each section of steelframe joint linked together, make steelframe entirety reach the object of elongation.
Can stretch the application of formula steelframe in Tunnel steelframe as shown in Figure 4, this figure can stretch the one possibility situation that formula steelframe is applied in tunnel, can determine as required whether between adjacent preliminary bracing steelframe, add and can stretch formula steelframe under actual conditions.
The access of Tunnel steelframe can be stretched formula steelframe partial result figure as shown in accompanying drawing 5, accompanying drawing 6.
In use procedure, can adopt following step (taking Fig. 5 as example):
(1) select as required suitable special internal thread connector, common hex nut, bolt, flange to be combined to form and can stretch formula steelframe, till must being screwed onto when wherein bolt is screwed in internal thread connector and cannot turning;
(2) bolt that can stretch formula steelframe both sides penetrates respectively in the flange of adjacent tunnel preliminary bracing steelframe;
(3) can stretch inside formula steelframe flange common hex nut be outwards screwed onto substantially motionless till;
(4) penetrate respectively four apertures in internal thread connector with special spanner and be rotated, make bolt exit round long nut to till cannot regulating;
(5) common hex nut is welded on flange;
(6) be welded on the common hex bolts that can stretch formula steelframe two flange inner sides and reinforce with reinforcing bar 6;
(7) be screwed into nut reinforcement of weld in flange one side of steelframe.
Without departing from the spirit and scope of the present invention; those skilled in the art are not in the situation that departing from scope and spirit of the present invention, within all apparent amendment about form and details that it is carried out or variation all should drop on protection scope of the present invention.
Claims (4)
1. can stretch formula stress fast compensation steelframe coupling configuration for one kind, for the docking of tunnel initial-stage preliminary bracing steelframe, it is characterized in that, there are two flange end plates that arrange in opposite directions, between two flange end plates, be provided with at least three and connect two internal thread connectors of screw rod in opposite directions, internal thread connector connects two screw rods with opposite threads direction.
According to claim 1 can stretch formula stress fast compensation steelframe coupling configuration, it is characterized in that, described internal thread connector middle part has the aperture for inserting special spanner.
According to claim 1 can stretch formula stress fast compensation steelframe coupling configuration, it is characterized in that, between two flange end plates, be provided with at least four and connect two internal thread connectors of screw rod in opposite directions, point two rows are uniform.
According to claim 1 can stretch formula stress fast compensation steelframe coupling configuration, it is characterized in that, described flange end plate has the profile identical with the flange of conventional profile steel frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410168345.8A CN103967508A (en) | 2014-04-24 | 2014-04-24 | Stretchable quick stress compensation type steel frame connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410168345.8A CN103967508A (en) | 2014-04-24 | 2014-04-24 | Stretchable quick stress compensation type steel frame connection structure |
Publications (1)
| Publication Number | Publication Date |
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| CN103967508A true CN103967508A (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410168345.8A Pending CN103967508A (en) | 2014-04-24 | 2014-04-24 | Stretchable quick stress compensation type steel frame connection structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104675418A (en) * | 2015-02-03 | 2015-06-03 | 北京建工土木工程有限公司 | Underground-excavation primary support grid connector and primary support engineering construction method adopting same |
| CN106321118A (en) * | 2016-11-03 | 2017-01-11 | 四川奥特机械设备有限公司 | Assembled type tunnel supporting and protecting shed frame |
| CN110671135A (en) * | 2019-10-29 | 2020-01-10 | 中铁（贵州）市政工程有限公司 | Adjustable connecting device for special-shaped steel arch frame |
| CN115467367A (en) * | 2022-08-17 | 2022-12-13 | 湖北工业大学 | Construction method for actively compensating deformation of underpass operation tunnel in upper-layer engineering construction |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104675418A (en) * | 2015-02-03 | 2015-06-03 | 北京建工土木工程有限公司 | Underground-excavation primary support grid connector and primary support engineering construction method adopting same |
| CN106321118A (en) * | 2016-11-03 | 2017-01-11 | 四川奥特机械设备有限公司 | Assembled type tunnel supporting and protecting shed frame |
| CN110671135A (en) * | 2019-10-29 | 2020-01-10 | 中铁（贵州）市政工程有限公司 | Adjustable connecting device for special-shaped steel arch frame |
| CN115467367A (en) * | 2022-08-17 | 2022-12-13 | 湖北工业大学 | Construction method for actively compensating deformation of underpass operation tunnel in upper-layer engineering construction |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140806 |