CN104947688A - Detachable combined variable-cross section steel middle beam - Google Patents
Detachable combined variable-cross section steel middle beam Download PDFInfo
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- CN104947688A CN104947688A CN201510380197.0A CN201510380197A CN104947688A CN 104947688 A CN104947688 A CN 104947688A CN 201510380197 A CN201510380197 A CN 201510380197A CN 104947688 A CN104947688 A CN 104947688A
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Abstract
The invention discloses a detachable combined variable-cross section steel middle beam. The detachable combined variable-cross section steel middle beam is composed of a uniform-cross section channel steel middle beam body, a variable-cross section steel middle beam body and a connecting device. The uniform-cross section channel steel middle beam body is composed of uniform-cross section channel steel, an anchor rod hole and bolt holes and located in a sheared area of a structure and mainly bears shearing force, and the anchor rod hole and the bolt holes are machined in the uniform-cross section channel steel. The connecting device is composed of a connecting plate and bolt holes machined in the connecting plate, and the connecting device is used for combining the uniform-cross section channel steel middle beam body and the variable-cross section steel middle beam body together. Variable-cross section treatment is conducted on the end of the variable-cross section steel middle beam body, and the cross section of the end of the variable-cross section steel middle beam body changes gradually so as to be the same as that of the uniform-cross section channel steel middle beam body. According to the detachable combined variable-cross section steel middle beam, profile steel with different sections is adopted for different stress areas, and thus the problem that the bearing capacity of an ordinary profile steel middle beam is insufficient or steel is wasted is effectively solved; the detachable combined variable-cross section steel middle beam has the advantages of being low in weight, convenient to disassemble and assemble, capable of being recycled and the like.
Description
Technical field
The present invention relates to base pit engineering support technology field, particularly relate to a kind of Demountable combined-type variable cross-section steel wale being applied to foundation pit supporting construction.
Background technology
Along with the development of economic technology and the increase of the size of population, urban skyscraper gets more and more, and almost every highrise building all needs excavation pit, and foundation ditch majority needs supporting.During pattern foundation pit supporting structure, waist rail is conventional support unit, and waist rail also claims girt strip, and the horizontal force between space enclosing structure and anchor pole is transmitted in its effect, mainly bears bending and shearing effect.At present, waist rail generally has reinforced concrete beam and two kinds, girder steel.Reinforced concrete beam is that material is made with concrete, and occupy an leading position in waist rail uses, but its construction is loaded down with trivial details, and can not recycling; Girder steel is that material is made with shaped steel, has that little, the bearing capacity of deadweight is large, the advantage such as simple, easy to operate of constructing, and is widely used gradually.
In Practical Project, each position of waist rail is stressed is uneven, and anchor pole connecting portion is comparatively large by shearing, and stake and beam contact site are subject to moment of flexure larger.Traditional girder steel is generally uniform beam, although such waist rail makes simple, do not consider that the change of force area adopts the section steel material in same cross section, not only cause the waste of steel, and weight is large, supporting capacity is poor, supporting can be caused time serious to lose efficacy; In addition, after Foundation Pit Construction completes, a large amount of section steel materials is forever embedded in underground, causes the wasting of resources and environment pollution.Consider lifting and the recycling of waist rail bearing capacity, and adopt the waist rail of varied cross section for different force areas, not yet have corresponding product or document introduction at present.
Summary of the invention
The object of the present invention is to provide a kind of Demountable combined-type variable cross-section steel wale, the steel wale of different cross section is adopted for different force area, effectively can solve the problems such as plain edition steel waist rail supporting capacity is poor, steel utilization ratio is low, and its lightweight, easy accessibility, recoverable.
Being configured to of Demountable combined-type variable cross-section steel wale of the present invention: be made up of uniform section channel-section steel waist rail, variable cross-section channel-section steel waist rail and linkage; Described uniform section channel-section steel waist rail is made up of the bolthole of uniform section channel-section steel and upper processing thereof and bolt hole, is positioned at structure and is cut district, mainly bear shearing action; Described variable cross-section channel-section steel waist rail is made up of the stiffening rib of variable cross-section channel-section steel and upper setting thereof and bolt hole, be positioned at structure by curved district, mainly bear Moment, variable cross-section channel-section steel waist rail carries out variable cross-section process at end position, and end cross-sectional gradual change is to identical with uniform section channel-section steel waist rail; Described linkage is the junction plate with bolt hole, for uniform section channel-section steel waist rail and variable cross-section channel-section steel waist rail being combined.
In Demountable combined-type variable cross-section steel wale, described bolt hole all adopts oval bolt hole, to avoid because construction error causes the problem that in assembling process, bolt hole cannot be aimed at.
The construction method of Demountable combined-type variable cross-section steel wale of the present invention: according to the difference of foundation pit earth stressor layer size, makes the Demountable combined-type variable cross-section steel wale comprising uniform section channel-section steel waist rail, variable cross-section channel-section steel waist rail and linkage of different model in advance; During installation, in waist rail installation position, the braced structures of A-frame as waist rail can be installed in advance, adopt piecemeal, continuous print method, first uniform section channel-section steel waist rail is lifted, utilize the anchorage effect of anchor pole in position, secondly lifting variable cross-section channel-section steel waist rail, after in place, utilizes linkage uniform section channel-section steel waist rail and variable cross-section channel-section steel waist rail Connecting groups to be combined; During dismounting, sequence of construction is contrary with erection procedure.
The advantage of Demountable combined-type variable cross-section steel wale of the present invention:
(1) adopt the shaped steel of different cross section for different force area, both ensure that the supporting capacity of waist rail, and turn avoid unnecessary waste of material, alleviate waist rail deadweight;
(2) adopt bolted on connection between different cross section waist rail, assembly and disassembly is simple and convenient, reusable;
(3) during waist rail installation and removal, adopt piecemeal, continuous print method, simple to operation, save construction period;
(4) due to the in advance prefabricated each several part of steel wale, when foundation pit construction is to waist rail layer position, can installs immediately, carry in time.
Accompanying drawing explanation
Fig. 1 is Demountable combined-type variable cross-section steel wale structural representation of the present invention.
Fig. 2 is scheme of installation of the present invention.
Marginal data: 1-uniform section channel-section steel waist rail; 2-variable cross-section channel-section steel waist rail; 3-linkage; 4-stiffening rib; 5-bolthole; 6-anchor head; 7-backing plate; 8-anchor pole; 9-bolt hole; 10-A-frame; 11-pea gravel concreten.
Detailed description of the invention
The invention provides a kind of Demountable combined-type variable cross-section steel wale, the technical scheme realized for making the present invention, to reach object and effect characteristic clearly clear and definite, elaborates to its detailed description of the invention below in conjunction with accompanying drawing.
Demountable combined-type variable cross-section steel wale is as shown in Figure 1 made up of several uniform section channel-section steel waist rails 1, variable cross-section channel-section steel waist rail 2 and linkage 3, and connected mode is bolted on connection.
Described uniform section channel-section steel waist rail 1 is positioned at supporting and protection structure and is cut district, mainly bears shearing action, is provided with bolthole 5, facilitates skyhook 8 in the middle of uniform section channel-section steel waist rail 1 web; Web and the edge of a wing at uniform section channel-section steel waist rail 1 two ends are all preset with bolt hole 9, conveniently utilize the connection of linkage 3.
Described variable cross-section channel-section steel waist rail 2 is positioned at supporting and protection structure by curved district, mainly bear Moment, variable cross-section channel-section steel waist rail 2 carries out variable cross-section process at end position, end cross-sectional gradual change is to identical with uniform section channel-section steel waist rail 1, variable cross-section channel-section steel waist rail 2 internal welding is connected to stiffening rib 4, the web at two ends and the edge of a wing are all preset with bolt hole 9, conveniently utilize the connection of linkage 3.
Described linkage 3 is provided with bolt hole 9, and bolt hole 9 is elliptical aperture, avoids the problem because construction error causes bolt hole to align.
During construction, according to the difference of foundation pit earth stressor layer, make the Demountable combined-type variable cross-section steel wale comprising uniform section channel-section steel waist rail 1, variable cross-section channel-section steel waist rail 2 and linkage 3 of different model in advance; During installation, in waist rail installation position, the braced structures of A-frame 10 as waist rail can be installed in advance, adopt piecemeal, continuous print method, first uniform section channel-section steel waist rail 1 is lifted, utilize the anchorage effect of anchor pole 5 in position, secondly lifting variable cross-section channel-section steel waist rail 2, after in place, utilizes linkage 3 uniform section channel-section steel waist rail and variable cross-section channel-section steel waist rail Connecting groups to be combined; During dismounting, contrary with installation path, remove linkage, variable cross-section channel-section steel waist rail and uniform section channel-section steel waist rail successively.
Claims (2)
1. a Demountable combined-type variable cross-section steel wale, comprises uniform section channel-section steel waist rail, variable cross-section channel-section steel waist rail and linkage, it is characterized in that, described uniform section channel-section steel waist rail is made up of the bolthole of uniform section channel-section steel and upper processing thereof and bolt hole; Described variable cross-section channel-section steel waist rail is made up of the stiffening rib of uniform section channel-section steel and upper setting thereof and bolt hole; Variable cross-section channel-section steel waist rail carries out variable cross-section process at end position, and end cross-sectional gradual change is to identical with uniform section channel-section steel waist rail; Described linkage is the junction plate with bolt hole, uniform section waist rail and variable cross-section waist rail can be combined.
2. the construction method of Demountable combined-type variable cross-section steel wale as claimed in claim 1, it is characterized in that, according to the difference of foundation pit earth stressor layer size, make the Demountable combined-type variable cross-section steel wale comprising uniform section channel-section steel waist rail, variable cross-section channel-section steel waist rail and linkage of different model in advance; During installation, adopt piecemeal, continuous print method, first lift uniform section channel-section steel waist rail, utilize the anchorage effect of anchor pole in position, secondly lifting variable cross-section channel-section steel waist rail, after in place, utilizes linkage uniform section and variable cross-section channel-section steel waist rail Connecting groups to be combined; During dismounting, sequence of construction is contrary with erection procedure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510380197.0A CN104947688A (en) | 2015-07-02 | 2015-07-02 | Detachable combined variable-cross section steel middle beam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510380197.0A CN104947688A (en) | 2015-07-02 | 2015-07-02 | Detachable combined variable-cross section steel middle beam |
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| CN104947688A true CN104947688A (en) | 2015-09-30 |
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| CN201510380197.0A Pending CN104947688A (en) | 2015-07-02 | 2015-07-02 | Detachable combined variable-cross section steel middle beam |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107119700A (en) * | 2017-07-03 | 2017-09-01 | 四川农业大学 | A kind of slope reinforcement and ecological protection system |
| CN112459077A (en) * | 2020-10-28 | 2021-03-09 | 济南城建集团有限公司 | Continuous foundation pit waist beam and construction method thereof |
| CN113356198A (en) * | 2021-07-01 | 2021-09-07 | 青岛业高建设工程有限公司市北分公司 | Single-spliced channel steel anchor rod waist beam structure and using method thereof |
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| CN2481759Y (en) * | 2001-06-29 | 2002-03-13 | 孙洪涛 | Steel-pipe pile and anchor bar combined foundation pit supporting member |
| CN201526090U (en) * | 2009-09-16 | 2010-07-14 | 永峻工程顾问股份有限公司 | I-type steel girder structure |
| CN201649104U (en) * | 2009-12-09 | 2010-11-24 | 北京市新发京建工贸有限公司 | Steel purlin suit and steel purlin for subway foundation pit support |
| CN102704490A (en) * | 2012-06-11 | 2012-10-03 | 上海强劲地基工程股份有限公司 | Assembled waist rail |
| CN203200760U (en) * | 2013-02-22 | 2013-09-18 | 东通岩土科技（杭州）有限公司 | Detachable prestress support frame system |
| CN203393721U (en) * | 2013-07-26 | 2014-01-15 | 浙江博雷重型机床制造有限公司 | Inner support main purlin component |
| JP5490300B1 (en) * | 2013-10-15 | 2014-05-14 | 株式会社フジコーポレーション | Retaining wall structure and retaining wall construction method |
| CN204780942U (en) * | 2015-07-02 | 2015-11-18 | 山东科技大学 | Can dismantle combination formula variable cross section shaped steel waist rail |
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2015
- 2015-07-02 CN CN201510380197.0A patent/CN104947688A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2481759Y (en) * | 2001-06-29 | 2002-03-13 | 孙洪涛 | Steel-pipe pile and anchor bar combined foundation pit supporting member |
| CN201526090U (en) * | 2009-09-16 | 2010-07-14 | 永峻工程顾问股份有限公司 | I-type steel girder structure |
| CN201649104U (en) * | 2009-12-09 | 2010-11-24 | 北京市新发京建工贸有限公司 | Steel purlin suit and steel purlin for subway foundation pit support |
| CN102704490A (en) * | 2012-06-11 | 2012-10-03 | 上海强劲地基工程股份有限公司 | Assembled waist rail |
| CN203200760U (en) * | 2013-02-22 | 2013-09-18 | 东通岩土科技（杭州）有限公司 | Detachable prestress support frame system |
| CN203393721U (en) * | 2013-07-26 | 2014-01-15 | 浙江博雷重型机床制造有限公司 | Inner support main purlin component |
| JP5490300B1 (en) * | 2013-10-15 | 2014-05-14 | 株式会社フジコーポレーション | Retaining wall structure and retaining wall construction method |
| CN204780942U (en) * | 2015-07-02 | 2015-11-18 | 山东科技大学 | Can dismantle combination formula variable cross section shaped steel waist rail |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107119700A (en) * | 2017-07-03 | 2017-09-01 | 四川农业大学 | A kind of slope reinforcement and ecological protection system |
| CN112459077A (en) * | 2020-10-28 | 2021-03-09 | 济南城建集团有限公司 | Continuous foundation pit waist beam and construction method thereof |
| CN113356198A (en) * | 2021-07-01 | 2021-09-07 | 青岛业高建设工程有限公司市北分公司 | Single-spliced channel steel anchor rod waist beam structure and using method thereof |
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