CN102635231B - Self-stabilization support system for inner film of circular reinforced concrete structure - Google Patents
Self-stabilization support system for inner film of circular reinforced concrete structure Download PDFInfo
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- CN102635231B CN102635231B CN201210107278.XA CN201210107278A CN102635231B CN 102635231 B CN102635231 B CN 102635231B CN 201210107278 A CN201210107278 A CN 201210107278A CN 102635231 B CN102635231 B CN 102635231B
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Abstract
The invention particularly relates to a self-stabilization support system for an inner film of a circular reinforced concrete structure, aiming at solving the problem that the inner film of the conventional circular reinforced concrete structure is hard to disassemble, easy to cause pulp leakage during casting, and easy to influence the vertical transportation work. The system comprises a plurality of layers of circular inner films which are arranged with one another up and down, the circular inner films are formed by connection of a plurality of pairs of arc inner film bodies, a gap between the adjacent sides of each pair of the inner film bodies is provided with a baffle piece, horizontal rib plates and vertical rib plates, which are crosswise arranged with one another, are fixed on the inner side of each inner film body, the inner side of each inner film body is provided with two support rods which have the same radian as each inner film body and are penetrated on the vertical rid plates, and one adjacent ends of the two support rods are in bolted connection with a forward/backward screw thread type sleeve. The system is reasonable and reliable in structural design, so that the exposure time of the wall of a vertical well can be greatly shortened, and the construction risk can be reduced; and the middle space of the vertical well can not be occupied, so that a vertical logistics corridor is convenient to be unobstructed, the work period is shortened, and the cost is reduced, and the system has the advantages of being ingenious in design, explicit in force application, and convenient to implement.
Description
Technical field
The present invention relates to reinforced concrete structure support system, be specially a kind of ring steel reinforced bar concrete structure internal mold from steady support system.
Background technology
In construction work, the high pier of bridge cast-in-place hollow, chimney stack, vertical shaft retaining wall etc. all need to use reinforced concrete hollow structure, need stable internal mold in the time of fluid concrete.
The at present internal mold of most of similar engineering, depending on significance level and the cost of exposed face inside circulus, adopts respectively punching block or wooden model.But the stable of template mostly is vertically and horizontal struts system; Also utilize the intensity of concrete structure own, structurally by the method for pre-buried suspension template.
While often constructing first floor, vertical force reaches ground by various forms, and second layer shuttering supporting is in first floor template, when second layer concrete reaches after some strength, remove after first floor template, be mounted to the 3rd layer and continue construction, now, all template weight is born by second layer built-in fitting.Successively construct to structural top with the method, start to need every layer from the second layer built-in fitting is set.
The built-in fitting of circulus is actually in hoop template and holes, in hole, insert bar dowel, outside bar dowel, mounting nuts is fixed, in the time that the concrete of cast has some strength, bar dowel also has certain stability, utilize the shear strength of bar dowel, except bearing this layer of template weight, also before upper layer concrete does not reach some strength, the weight to upper former plays a supportive role.
After concrete reaches intensity, because template has certain thickness in normal direction, there is certain taper in thickness approach in template, stripping is more difficult, built-in fitting stretches out template certain length in addition, template can only level translation to the inside one segment distance (embedded bar length) after, could remove, often need to use the instruments such as crowbar, very easily damage template; Exposed steel bar very easily makes moist and gets rusty, and needs to cut off in time all pre-buried bar dowels that expose after form removal, but directly affects concrete appearance by methods such as oxygen cutting remove.
For the ease of form removable, in template, the boring of embedded bar is all slightly larger than bar diameter, easily produces spillage when fluid concrete, reduces concrete quality and pollution structure outward appearance.
For preventing pouring concrete and the Lateral Force lower bolster displacement of vibrating, need to carry out necessary support in hollow-core construction inner side, directly affect the logistics transportation operation of vertical direction.
Summary of the invention
Easy spillage and affect the problem of vertical hauling operation when the present invention removes difficulty, cast in order to solve existing ring steel reinforced bar concrete structure internal mold, provides a kind of ring steel reinforced bar concrete structure internal mold from steady support system.
The present invention adopts following technical scheme to realize: ring steel reinforced bar concrete structure internal mold is from steady support system, comprise some layers of annular internal mold setting up and down, annular internal mold is by some, mould body in arc to be formed by connecting, every internally gap place of an adjacent side of mould body be provided be positioned at its outside and with every internally wherein catch that mould body is fixing of membrane body, interior mould body inner side is all fixed with horizontal gusset arranged in a crossed manner and vertical gusset, and interior mould body inner side is provided with identical with its radian and is through two support bars on vertical gusset, an adjacent terminal bolt of two support bars is connected with positive and negative screw-thread sleeve.
Drive support bar to extend by rotating positive and negative screw-thread sleeve, apply the outside tension force of hoop to interior mould body, thereby be converted into annular internal mold to concrete normal pressure, its normal pressure is offset by the concrete with some strength, improve the frictional force between annular internal mold and concrete, realize hoop and support; Simultaneously every internally catch that mould body gap place arranges is realized annular internal mold not object of spillage of pouring concrete stage when flexible.
When annular internal mold is installed, only require that to meet installation site accurate, wouldn't apply axial compression, connection between interior mould body adopts template to be connected and fixed card, fluid concrete after concrete has some strength, apply axial compression by the support bar that rotates the internal mould body of positive and negative screw-thread sleeve inner side, impel interior mould body to be out of shape laterally, and then annular internal mold is tightly pressed in to concrete structural surface, under the effect of this pressure, improve the frictional force between annular internal mold and concrete structure, utilize this frictional force to bear the weight of annular internal mold and other load, realize support system from steady object, generally, the support bar that shellring shape internal mold internal mould body inner side are installed from bottom to up applies after axial compression, unclasp the axial stress of orlop annular internal mold support bar, block-by-block unclamps interior mould body, be arranged on shellring shape internal mold top by moving on mould body block-by-block in this layer, cycling, in the time removing the superiors' annular internal mold, discharge after support bar circumference stress, suspend support in midair by built-in fitting temporarily, or adopt crane gear once the superiors' annular internal mold to be extracted, overcome existing ring steel reinforced bar concrete structure internal mold and removed difficulty, easy spillage and affect the problem of vertical hauling operation when cast.
The positive and negative screw-thread sleeve quantity of interior mould body inner side is two, and above-below direction distributes, the two ends of each positive and negative screw-thread sleeve are all screwed with support bar, and the outer end of support bar is all fixed with the support termination that diameter is greater than support bar diameter, in the time that hollow pier (chimney) inside is provided with closing slope, by regulating the length of upper lower support bar to realize the change of the gradient, the support bar on each interior mould body that is arranged so that of support termination can not stagger simultaneously, affects support effect.
Reasonable in design of the present invention is reliable, a kind of internal mold that is steel hoop concrete structure construction supports new system, in tunnel ventilation To Construction of Silo, can make shaft sinking synchronize and carry out with two lining constructions especially, greatly shorten shaft wall open-assembly time, reduced construction risk; And do not take vertical shaft central space, be convenient to vertical logistics corridor unimpeded, when having shortened the duration, reduced cost, have advantages of be skillfully constructed, stressed clear and definite, be easy to implement, be applicable in engineering that hollow pier, tunnel ventilation vertical shaft two serve as a contrast.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of interior mould body in Fig. 1.
In figure: mould body in 1-, 2-catch, the horizontal gusset of 3-, the vertical gusset of 4-, 5-support bar, the positive and negative screw-thread sleeve of 6-.
The specific embodiment
Ring steel reinforced bar concrete structure internal mold is from steady support system, comprise some layers of annular internal mold setting up and down, annular internal mold is by some, mould body in arc 1 to be formed by connecting, every internally gap place of an adjacent side of mould body 1 be provided be positioned at its outside and with every internally wherein catch 2 that mould body 1 is fixing of mould body 1, interior mould body 1 inner side is all fixed with horizontal gusset arranged in a crossed manner 3 and vertical gusset 4, and interior mould body 1 inner side is provided with identical with its radian and is through two support bars 5 on vertical gusset 4, an adjacent terminal bolt of two support bars 5 is connected with positive and negative screw-thread sleeve 6.
Positive and negative screw-thread sleeve 6 quantity of interior mould body 1 inner side are two, and above-below direction distribution, and the two ends of each positive and negative screw-thread sleeve 6 are all screwed with support bar 5, and the outer end of support bar 5 is all fixed with the support termination 7 that diameter is greater than support bar 5 diameters.
In specific implementation process, when hollow pier (chimney) inside is provided with the gradient of closing slope when larger, on interior mould body 1, be provided with the regulating block of certain width; The above steel hoop concrete structure in the ground such as hollow pier, chimney stalk, can start from ground vertical first floor annular internal mold, and annular internal mold weight is directly by ground supports; The underground circular reinforced concrete structures such as airshaft, adopt ground rigging suspention to support first floor annular internal mold weight, also can utilize Shaft Linings seat supports first floor annular internal mold weight.
Claims (1)
1. a ring steel reinforced bar concrete structure internal mold is from steady support system, it is characterized in that: comprise some layers of annular internal mold setting up and down, annular internal mold is by some, mould body in arc (1) to be formed by connecting, every internally gap place of an adjacent side of mould body (1) be provided be positioned at its outside and with the wherein fixing catch (2) of a mould body (1) of every internally mould body (1), interior mould body (1) inner side is all fixed with horizontal gusset (3) arranged in a crossed manner and vertical gusset (4), and interior mould body (1) inner side is provided with identical with its radian and is through two support bars (5) on vertical gusset (4), an adjacent terminal bolt of two support bars (5) is connected with positive and negative screw-thread sleeve (6).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210107278.XA CN102635231B (en) | 2012-04-13 | 2012-04-13 | Self-stabilization support system for inner film of circular reinforced concrete structure |
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| CN201210107278.XA CN102635231B (en) | 2012-04-13 | 2012-04-13 | Self-stabilization support system for inner film of circular reinforced concrete structure |
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| CN102635231A CN102635231A (en) | 2012-08-15 |
| CN102635231B true CN102635231B (en) | 2014-06-04 |
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Families Citing this family (5)
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| CN106401222B (en) * | 2016-10-26 | 2018-07-17 | 卢永富 | A kind of tubular conveying shelter bridge |
| CN109707157A (en) * | 2017-10-26 | 2019-05-03 | 孙阳 | The assemble method of the outer purlin component of tower |
| CN111910915A (en) * | 2020-07-16 | 2020-11-10 | 中国二十冶集团有限公司 | Cast-in-place concrete cylinder structure internal mold reinforcing device and construction method thereof |
| CN113847036A (en) * | 2021-10-25 | 2021-12-28 | 安徽理工大学 | Double-wall seat structure for deep drilling shaft after well wall bottom breaking and construction method |
| CN114750284B (en) * | 2022-05-10 | 2022-11-29 | 北京建工集团有限责任公司 | Connecting structure of steel structure and concrete and construction method |
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| CN202672037U (en) * | 2012-04-13 | 2013-01-16 | 中铁十七局集团第三工程有限公司 | Annular inner membrane self-stabilization support system of reinforced concrete structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120042605A1 (en) * | 2010-08-17 | 2012-02-23 | Turner Michael L | Removable Support Cage For Top Of Drilled Pier |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2487816Y (en) * | 2001-07-31 | 2002-04-24 | 王贵 | Universal combined steel shuttering |
| JP4164117B1 (en) * | 2008-01-26 | 2008-10-08 | 株式会社高長建設 | Formwork apparatus for prismatic concrete structure and construction method of prismatic concrete structure using the same |
| CN201395935Y (en) * | 2009-04-03 | 2010-02-03 | 刘纯风 | Round pipe-shaped internal mold |
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